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FLAME RETARDANTS AND THE FUTURE
2022 / 01 / 22
It`s famously said [Prediction is very difficult, especially if it`s about the future." Fire safety will surely remain a primary requirement for electronic and electrical equipment. In order to ensure fire safety, there will be a need to incorporate flame retardants into plastic systems forming part of such electronic and electrical equipment that would otherwise pose a significant fire safety risk. Halogenated materials form by far the largest group of flame retardants used in PCB materials with a global estimated market
Effect of ACR impact modifier for PVC toughening mechanism properties
2022 / 01 / 20
ACR impact modifiers generally refer to crosslinked low glass temperature (Tg) acrylate monomer polymers such as polypropylene Butyl butyrate (PBA) as the core, with poly (methyl methacrylate) and other high Ts polymers as the shell, with two layers Or multilayer core-shell composite polymer. It can not only effectively improve the impact strength of polyvinyl chloride (PVC), but also be used In polymethyl methacrylate (PMMA), polystyrene (PS), nylon and polycarbonate (PC) brittle or low toughness polymers Toughening modification. When ACR is used for toughening PVC, it can be achieved at a low dosage (generally 6-8phr)
Effect of ACR impact modifier for PVC toughening mechanism properties
2022 / 01 / 20
ACR impact modifiers generally refer to crosslinked low glass temperature (Tg) acrylate monomer polymers such as polypropylene Butyl butyrate (PBA) as the core, with poly (methyl methacrylate) and other high Ts polymers as the shell, with two layers Or multilayer core-shell composite polymer. It can not only effectively improve the impact strength of polyvinyl chloride (PVC), but also be used In polymethyl methacrylate (PMMA), polystyrene (PS), nylon and polycarbonate (PC) brittle or low toughness polymers Toughening modification. When ACR is used for toughening PVC, it can be achieved at a low dosage (generally 6-8phr)
Effect of ACR impact modifier for PVC toughening mechanism properties
2022 / 01 / 20
ACR impact modifiers generally refer to crosslinked low glass temperature (Tg) acrylate monomer polymers such as polypropylene Butyl butyrate (PBA) as the core, with poly (methyl methacrylate) and other high Ts polymers as the shell, with two layers Or multilayer core-shell composite polymer. It can not only effectively improve the impact strength of polyvinyl chloride (PVC), but also be used In polymethyl methacrylate (PMMA), polystyrene (PS), nylon and polycarbonate (PC) brittle or low toughness polymers Toughening modification. When ACR is used for toughening PVC, it can be achieved at a low dosage (generally 6-8phr)
Properties and application of acrylic impact modifiers
2022 / 01 / 20
Properties and application of acrylic impact modifiers Because acrylate is the "core-shell" structure of the elastomer, give it a series of advantages: excellent impact resistance "core-shell" structure of the impact performance is better than the network structure of polymer (CPE, EVA). In terms of glass transition temperature, CPE is -10℃ ~ -20℃, while acrylate can reach -56℃, so low temperature impact performance is significantly better than CPE. The newly developed TIM812 glass transition temperature can reach above -60℃, improving the low temperature impact performance of profiles significantly. CPE processing temperature range is narrow because of the chlorinated polyethylene structure Close to PVC, high temperature (185℃), good incorporation, easy to damage the network structure, resulting in impact resistance Drop. If the temperature is low, plasticizing is not good, poor dispersion, but also affect the impact, appearance and other properties of propylene Acid ester anti-impact modifier does not have the above problems, processing temperature is wider, easy to operate, high yield, stable production Low thermal shrinkage, good dimensional stability using A C R impact modifier P V C profile general 100℃, 60 minutes of low shrinkage, generally below 1.5%. CPE is higher, generally above 1.5% (standard requirements ≤2.5%). The practical significance of this project is to test the longitudinal stress of P V C profiles. The influence factors of longitudinal stress are the gelation degree of plasticization and the speed of process traction. Therefore, the residual stress between molecules is too large, and the local concentration is more concentrated, which is the main reason of stress cracking of P V C profile. The ACR resistance The impact modifier has obvious effect on improving the stress cracking of profiles, and the cracking is less in low temperature assembly. ACR impact modifier has a reasonable
2022 / 01 / 19
PVC hose is actually polyvinyl chloride, and PVC is widely used. Widely used in construction materials, industrial products, daily necessities, floor leather, pipe, packaging film, foam materials and many other aspects. PVC is a popular synthetic material today. The PVC process is very strict, and PVC is widely used in the building materials industry because PVC has unique performance characteristics. PVC has the characteristics of rainproof, fireproof, antistatic and easy forming. It also has high light resistance and fire resistance. It has the characteristics of flame retardant and is widely used in fire protection.PVC has a variety of appearances. It not only has simple craftsmanship and excellent performance, it can also express natural colors and people`s desired colors, and can present rich colors.PVC pipe is completely non-toxic and tasteless, and it has no harm to human body. It is an environmentally friendly material. It can protect the ecological environment, so it is the trend of social civilization development. PVC materials meet the needs of the building materials industry and have become the perfect home products for environmental protection and practical use.
Introduction to PVC pipe-2 in china
2022 / 01 / 19
PVC can be divided into soft PVC and hard PVC.Hard PVC accounts for about 2/3 of the market, and soft PVC accounts for 1/3. Soft PVC is generally used for the surface of floors, ceilings and leather, but because soft PVC contains plasticizer (this is also the difference between soft PVC and hard PVC), the physical properties are poor (such as the water pipe needs to withstand a certain water pressure, soft PVC It is not suitable for use), so its scope of use has been limited.Hard PVC hose does not contain plasticizers, so it is easy to form and has good physical properties, so it has great development and application value. In the production process of PVC materials, it is necessary to add several additives, such as stabilizers, plasticizers, etc. Novista provide the environmental protection additives, impact modifies and PVC stabilizers for the customers to produce PVC pipes who have non-toxic, tasteless and environmentally friendly requirements.
2022 / 01 / 19
PVC piping is commonly employed in the chemical industry.PVC has excellent chemical resistance to wide range of corrosive fluids.UV resistance of PVC pipingPVC piping undergoes surface oxidation and embrittlement by exposure to sunlight over a period of time. The color of pipe changes from gray to white. The strength of piping is not reduced, however it becomes more susceptible to impact damage. UV protection can be provided by applying a thick coating of latex paint.Heat tracing of PVC pipeIt is possible to heat trace PVC piping to maintain a constant elevated temperature. Electric tracing is recommended. The maximum heat trace temperature should not exceed the pressure temperature rating of the piping system.Pipe supportsPipe saddle cut from PVC pipe are recommended at support locations. PVC pipe must not rest directly on steel. Supports must be provided on or close to inline items such as valves. PVC piping connected to vibrating equipment's such as pumps must be isolated using teflon or rubber expansion joints.Joining Methods- Solvent Welded Joints- Flanged Joints- Threaded JointsSolvent cementing is a preferred method of joining PVC pipe and fittings. The OD of the pipe and ID of fitting are primed, coated with special cement and joined together. Most solvent cement joints fail due to lack of solvent penetration or inadequate primer application.Applicable StandardsASTM D1785 - Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120ASTM D2241 - Standard Specification for Poly(Vinyl Chloride) (PVC) Pressure-Rated Pipe (SDR Series)ASTM D2665 - Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Drain, Waste, and Vent Pipe and FittingsASTM D2672 - Standard Specific
2022 / 01 / 15
Types of fire retardant coatings can be defined in many ways and can usually be classified as follows: From the base material it uses, it can be divided into organic type and inorganic type. The organic type fireproof coating is based on natural or synthetic organic resin and organic emulsion; the inorganic type fireproof coating is based on the inorganic adhesive. According to its fire protection form, it can be divided into non-intumescent and intumescent. According to its scope of use, it can be divided into steel structure fireproof coating, prestressed concrete floor fireproof coating, tunnel fireproof coating, etc. Usually, we divide it from the form of fire retardant coating, which can be divided into intumescent and non-intumescent fire retardant coatings. When the non-intumescent fire retardant coating is exposed to fire, the coating basically does not change in volume, forming a glaze-like protective layer. It can act as a barrier to oxygen, so that oxygen cannot contact with the protected flammable substrate, thereby avoiding or reducing the combustion reaction. Since the non-intumescent fire retardant coating is generally thicker than the intumescent fire retardant coating, its consumption per unit area is large, the use cost is high, the decorative effect is poor, and its fireproof and heat insulation effect is not as good as that of the intumescent fire retardant coating. The research on fire retardant coatings for cables and cables generally takes the "intumescent" technical approach.
2022 / 01 / 15
Flame retardants are compounds, which when added to materials during or after manufacture, inhibit or suppress the combustion process. They interfere with combustion at various stages of the process, e.g. during heating, decomposition, ignition or flame spread. Their primary function is to suppress the spread of fires or delay the time of flashover so that people can escape. Flame retardants used in plastic materials fall broadly into two categories, namely additive and reactive. Additive flame retardants are incorporated and dispersed into the plastic prior to, during, or most commonly following polymerization. If they are chemically compatible with the plastic, they act as plasticizers otherwise, they are considered as fillers. Reactive flame retardants are chemically bound to the polymer molecule by incorporating them into the polymer backbone or by grafting them onto the backbone as branches. As reactive flame retardants are chemically bound to the host polymer, they are prevented from bleeding out; and thus generally exert greater flame retardancy than additive compounds due to their greater availability throughout the life cycle of the polymer into which they are incorporated. Novista Group supplies equivalent of FP-2100JC, FP-2200S, FP-2500S, Exolit OP1230, OP930, OP1312, OP1314 to global market.
WHY DO WE NEED FLAME RETARDANTS?
2022 / 01 / 15
On average, there are more than 4,500 fatalities annually in the EU-27 as a result of fires; this accounts for 2% of all fatal injuries. Fires develop from inception through build-up, until a stage where the total thermal radiation from the fire-plume, hot gases and hot compartment boundaries cause the radiative ignition of all exposed combustible surfaces within the compartment. This sudden and sustained transition of a growing fire to a fully developed fire is called flashover. At this point, the radiation of energy to the contents of the room raises all the contents to their ignition temperature, whereby the contents of the room suddenly and simultaneously ignite. It is estimated that in a domestic dwelling fitted with working fire alarms on all levels where the occupants are asleep upstairs and a fire starts on the main level of the residence, the occupants have about three minutes to escape if they are to have any chance of survival. The presence of flame retardants in otherwise combustible materials has two possible effects; • The flame retardant may prevent the fire from developing altogether or; • The flame retardant may slow down the build-up phase of the fire by delaying the onset of flash over, thereby extending the escape time window. In either case, the flame retardant serves its primary purpose of reducing the risk
ASA color co-extrusion material
2022 / 01 / 14
ASA granule color co extruded material has been widely used in ASA synthetic resin tile industry, with its excellent weatherability, excellent decorative and prolonged exposure to UV, moisture, hot and cold harsh environments can still maintain the stability of the color and physical properties.ASA color co-extrusion material has more color choices, bright, long lasting color, no obvious color difference;surface coverage uniformity and stable process make per ton ASA color coextrusion material to product more than 7000 square meters; the use of replacement in the selection of pure PVC tile project, 10000 square meters of production to be realized, so as to solve the pure PVC tile use of discoloration, powder, crisp cracking risk, and effectively control the cost;the product surface scratch, can provide all kinds of high light, matte, metallic effects selection. ASA 400 is natural or specialized colour particle, it used in extrusion as pvc celuka(crust) foam board for building templates,pvc tile ... to improve the surface gloss,weatherability and vicat softening point. for more inquiry
2022 / 01 / 14
ASA is a thermoplastic created to be similar to ABS, but with better weather resistance. ASA`s combination of high strength and flexibility along with its superior UV resistance makes it ideal for printing objects which may be used in the outdoors or in industrial settings. Due to its high glass transition temperature, a heated bed is required to successfully print with ASA. For the best results when printing with ASA, a fully enclosed print bed recommended. welcome to contact me for more:whatsapp 86 13563682728
ASA Granules Characteristics in china
2022 / 01 / 14
CharacteristicsIt has excellent fluidity, mutual solubility and stabilityIt has excellent gloss brightness and surface texture and excellent surface hardness. Has the toughness of impact resistance and super weather resistance.Thanks for the trust of customers at home and abroad, our products with excellent product performance and meticulous after-sales service, has been helping the production development of customers at home and abroad!
Everything You Need To Know About PVC Plastic-3
2021 / 12 / 29
What are the Characteristics of Polyvinyl Chloride (PVC)?Some of the most significant properties of Polyvinyl Chloride (PVC) are:1. Density: PVC is very dense compared to most plastics (specific gravity around 1.4)2. Economics: PVC is readily available and cheap.3. Hardness: Rigid PVC ranks well for hardness and durability.4. Strength: Rigid PVC has excellent tensile strength.Polyvinyl Chloride is a "thermoplastic" (as opposed to "thermoset") material, which has to do with the way the plastic responds to heat. Thermoplastic materials become liquid at their melting point (a range for PVC between the very low 100 degrees Celsius and higher values like 260 degrees Celsius depending on the additives).A primary useful attribute about thermoplastics is that they can be heated to their melting point, cooled, and reheated again without significant degradation. Instead of burning, thermoplastics like polypropylene liquefy allows them to be easily injection molded and then subsequently recycled.By contrast, thermoset plastics can only be heated once (typically during the injection molding process). The first heating causes thermoset materials to set (similar to a 2-part epoxy), resulting in a chemical change that cannot be reversed. If you tried to heat a thermoset plastic to a high temperature a second time, it would only burn. This characteristic makes thermoset materials poor candidates for recycling.Why is Polyvinyl Chloride (PVC) used so often?PVC offers a wide variety of applications and advantages across multiple industries in both its rigid and flexible forms. In particular, Rigid PVC possesses a high density for plastic, making it extremely hard and generally incredibly strong. It is also readily available and economical, which, combined with most plastics' long-lasting characteristics, makes it an easy choice for many industrial applications like construction.
Everything You Need To Know About PVC Plastic-4
2021 / 12 / 29
What Are The Different Types of PVC?Polyvinyl Chloride is widely available in two broad categories: rigid and flexible. Each type comes with its own set of advantages and ideal uses for different industries. Flexible PVC can act as electrical cable insulation and a rubber alternative. Rigid PVC has various uses in construction and plumbing, providing a lightweight, cost-effective, and durable material to use.How is PVC made?Polyvinyl Chloride is made from one of three emulsion processes:- Suspension polymerization- Emulsion polymerization- Bulk polymerizationPolyvinyl Chloride for Prototype Development on CNC Machines, 3D Printers, & Injection Molding MachinesTwo main issues are working with PVC that makes it relatively problematic and not generally recommended for use by non-professionals. The first is the emission of toxic and corrosive gases when melting the material. This happens to some extent or another while 3D printing, CNC machining, and injection molding. We recommend taking a look at the MSDS data sheets for different chlorinated hydrocarbon gases like chlorobenzene and discussing the production process with a professional manufacturer. Second is the corrosive nature of PVC. This is problematic when PVC is repeatedly coming into contact with metal nozzles, cutters, or mold tools made from a material other than stainless steel or some other similarly corrosion-resistant metal.3D Printing:Polyvinyl Chloride is available in filament form as a plastic welding rod (the material used for welding), but it is not presently retrofit for specific use in 3D printing. Although there are a growing number of plastics and plastic substitutes available for 3D printing, by far, the two most common are still ABS and PLA.The biggest issue with PVC for 3D printing is its corrosive nature (potentially compromising typical machines' functionality if it wer
Everything You Need To Know About PVC Plastic-5
2021 / 12 / 29
Is PVC Toxic?PVC can pose a health hazard when burned as it emits hydrogen chloride (HCl) fumes. In applications where the likelihood of fire is high, PVC free electrical wire insulation is sometimes preferred. Fumes can also be emitted when melting the material (such as during prototyping and manufacturing processes like 3D printing, CNC machining, and injection molding). We recommend taking a look at the Material Safety Data Sheets (MSDS) for different chlorinated hydrocarbon gases like chlorobenzene and discussing the production process with a professional manufacturer.What are the Advantages of Polyvinyl Chloride?PVC provides industries with a series of critical advantages that have cemented its place as one of the most popular and widely used plastics on the market. These advantages include:- Polyvinyl Chloride is readily available and relatively inexpensive.- Polyvinyl Chloride is very dense and thus very hard and resists impact deformation very well relative to other plastics.- Polyvinyl Chloride has outstanding tensile strength.- Polyvinyl Chloride is very resistant to chemicals and alkalis.PVC's advantages helped solidify its place as one of the most used plastics around the world. However, even though it's widely effective and popular, you have to consider some factors when using the material.What are the Disadvantages of Polyvinyl Chloride?While PVC has a host of advantages that make it a desirable material to work with, there are some reasons to take caution. The disadvantages that you have to account for when using PVC include:- Polyvinyl Chloride has very poor heat stability. For this reason, additives that stabilize the material at higher temperatures are typically added to the material during production.- Polyvinyl Chloride emits toxic fumes when melted or subject to a fire.Although there are some shortcomings, Poly
PVC processing aids Actual funtion
2021 / 12 / 25
PVC processing aids are the main raw materials for acrylic esters and methyl methacrylate. In the actual production, usually the first acrylic and other monomers (such as styrene, acrylonitrile, etc.) by emulsion polymerization to form a glass transition temperature of the polymer, that is, with the elastic properties of the core, and then with methacrylic acid Methyl ester, styrene and the like to form a polymer having a core-shell structure. The emulsion solid content of this emulsion polymerization is generally about 45% ± 3%, the emulsion and then dehydrated to make the product less than 1% water content (mass fraction), to obtain white powder products.Core-shell emulsion polymerization is the core of ACR resin production technology. Although the core structure of ACR has "hard core-soft shell structure", "soft-core-hard shell structure" and "hard-soft-hard three-layer structure", but the current market sales of the main varieties of " Hard shell structure ", with the structure of ACR resin performance is good, more widely used. "Soft-core-hard shell structure" of the core-shell emulsion polymerization, the process is the first step in the emulsion polymerization of the formation of soft latex particles grafted hard monomer. The types and amounts of emulsifiers, the ratio of core-shell, shell monomer feeding, the degree of crosslinking of rubber latex (rubber core), the size of seed and the type and amount of crosslinking agent, and so on. The core-shell structure and ACR's final product performance have a significant impact. We know: plastic processing can not be separated from PVC processing aids, PVC processing aids is a very effective copolymer additives, the main role of this additive is to improve the plastic properties of PVC materials, through the stability of the performance of plastic The normal performance of the product, so that higher quality plastic products, longer life. According to the different needs of mater
super high molecular weight SAN processing aid TF869/TP801
2021 / 12 / 25
SAN Processing Aid is a super high molecular weight processing aid ,it is a kind of super high molecular weight polymer which is copolymerized by styrene and acrylonitrile. It can promote PVC plasticization, obviously improve the thermal deformation temperature and surface smoothness of PVC products, and at the same time give PVC products higher surface hardness and rigidity.The processing performance is good, plasticizing quickly.It endow PVC products good surface finish.Compared with other ordinary processing aids, it has higher molecular weight which is above 5 million, the product has a good cost performance.The purpose of research and development the produc is in order to further reduce the production cost of the customer.In addition, our production field of SAN processing aid is include ABS, ASA, ABS/PC alloy, and has special requirements on heat resistance of PVC products.SAN processing aid promotes faster fusion, increases melt strength, enhances extensibility and improves melt homogeneity.Increases the surface quality of PVC products. It is a good general purpose processing aid that promotes a wide processing window improving PVC gelation, fusion fluidity and processing performance and are broadly used in PVC profiles, sheets, pipes, pipe fittings and foam products.
2021 / 12 / 25
SAN Processing AIDS are copolymerized with styrene and acrylonitrile. It is a kind of white powder, which can be widely used in various hard PVC products, for example, extruding products like PVC profiles, pipes & fittings, floors, and injection molding products like PVC soles, connecting parts for profiles, post cap, base, buckle plate, etc.Product AdvantageSAN PROCESSING AIDS· Less using dosage and high efficiency.· Promote fusion, help the melt gel quickly and improve the thermal deformation temperature.· Improve the surface gloss of PVC product obviously.· Provide PVC products with properties of dimensional stability, heat-resistance and chemical resistance.
The role of microencapsulated flame retardants
2021 / 12 / 25
What is the role of microencapsulated flame retardants? ①The liquid flame retardant can be microencapsulated into a solid flame retardant, which can be directly blended with the polymer; Flame Retardant FP-2500S ②Choose a suitable shell material according to the flame-retardant substrate to increase the compatibility of the flame retardant with the polymer, thereby reducing or eliminating the adverse effects of a large amount of filled flame retardant on the physical properties of the polymer product; ③It can reduce the migration of the liquid flame retardant inside the polymer and the loss of the flame retardant dose in the polymer material due to the volatility of the liquid flame retardant; ④Reduce or avoid the release of toxic components in flame retardants during the processing of polymer materials and improve environmental pollution;
Flame Retardant Mechanism of Antimony Trioxide
2021 / 12 / 25
Antimony trioxide itself has no flame retardant function, however, when it is used together with halogenated compounds, the synergistic effect of the mixture creates the flame retardant properties. Antimony trioxide reacts with halogenated compound and creates the chemical compounds, which generate the flame retardant function, through the following process. 1. 1. Stop action of thermal de-composite chain reaction under gas phase (Radical trap effect) 2. 2. Sealing action against oxygen under gas phase (Air sealing effect) 3. 3. The formation of carbonaceous char under the solid phase (Air sealing and adiabatic effect) NoNovista Group supplies equivalent of FP-2100JC, FP-2200S, FP-2500S, Exolit OP1230, OP930, OP1312, OP1314 to global market.
How Flame Retardant Systems Work In Plastics
2021 / 12 / 25
Each year, billions of pounds of flame retardant additives are used throughout the world. A variety of flame retardant chemistries, packages, or systems can be deployed in different polymers depending on the requirements of individual end-use applications. Some polymers are inherently flame retardant. Other polymers - including nylons, polyesters, polypropylenes and many other useful and cost-effective materials - are not. They must be modified to achieve the proper level of fire resistance through the use of flame retardant additives. Mechanisms for flame retardance in plastics Vapor Phase Inhibition During combustion, flame retardant additives react with the burning polymer in the vapor phase disrupting, at a molecular level, the production of free radicals and shuts down the combustion process. This mechanism is commonly used with halogenated flame retardant systems. Solid Phase Char-Formation Char-forming flame retardant additives react to form a carbonaceous layer on the material`s surface. This layer insulates the polymer, slowing pyrolysis, and creates a barrier that hinders the release of additional gases to fuel combustion. This method is commonly deployed by non-halogen systems using phosphorous and nitrogen chemistries. Quench & Cool
Introduction of Polymer Stabilizers
2021 / 12 / 22
In order to prevent the degradation of polymers during processing or use, polymer stabilizers are employed in accordance with the degradation mechanism of the relevant polymer. Due to the large differences in degradation mechanisms of polymers containing chlorine(stabilizers for polyvinyl chlorides), and those without chlorine, stabilizers that are suitable for each type of polymer should be chosen.In general, the same polymer stabilizers are used in most plastics, such as polypropylene, polyethylene, acrylonitrile butadiene styrene (ABS), and engineering plastics. The key to preventing the oxidative degradation of plastics is to terminate the radical reaction in the early stage of degradation, thereby terminating autoxidation. To achieve this, at least one, and preferably several, of the factors associated with the degradation scheme need to be eliminated.Many stabilizers prevent one of the elementary degradation reactions of plastics, thereby contributing to their stabilization. Stabilizers are categorized into a radical chain initiation inhibitor, a radical scavenger, and a peroxide decomposer, depending on the autoxidation stage at which the radical chain is inhibited.On the other hand, for this reason, the PVC stabilizers are designed to scavenge the chlorine atoms and hydrogen chloride formed in the degradation process.Designing Polymer Stabilizer FormulationsSince the degradation reaction is complex, eliminating only one of the factors responsible for degradation is not sufficient to stabilize the polymer. Stated alternatively, simultaneously eliminating multiple degradation factors produces a large stabilizing effect.For example, in the case of polypropylene products for outdoor use, a phenolic antioxidant (radical scavenger) and phosphorus antioxidant (peroxide decomposer) are blended in to act as thermal stabilizers during processes such as molding, and an ultraviolet absorber and
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.