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Application And Development Prospects Of Plastic Additives Flame Retardants In The Field Of PVC
2022 / 12 / 03
As a widely used resin of a large variety, polyvinyl chloride has a wide range of applications in the construction field. There are DRF series flame retardants in the country, which are prepared by using proprietary ultra-fine, surface modification and compounding technologies. Not only have good flame retardant performance, but also have low smoke, halogen-free and non-corrosive properties. They are both flame-retardant and electrical insulation. , After filling, the material has good mechanical performance and other functions, and is low-smoke, non-toxic, environmentally friendly, safe and reliable to use, and can reduce the generation of smoke in systems containing halogen or phosphorus. It is widely used as a plastic auxiliary flame retardant in PVC, PU, etc., with high flame retardant efficiency and little impact on the mechanical properties of the substrate. Its flame retardant and smoke elimination have very important significance. In the past, the flame retardant of PVC was generally added with organic flame retardants, but organic flame retardants were expensive and highly toxic, and would migrate and ooze in PVC, thereby affecting the flame retardant effect. In addition, a large amount of toxic smoke is emitted during combustion to cause suffocation and poisoning. The new inorganic composite flame retardant has solved the flame retardant and smoke elimination problem of PVC. It has the characteristics of non-toxic, low cost and permanent flame retardant. PVC hair treated with it Both the smoke volume and oxygen index meet the national standards, and no secondary pollution will be generated during garbage dispo
Product Features Of Textile Flame Retardant
2022 / 12 / 03
1. After washing several times, it still has excellent flame retardant properties. 2. It is colorless, transparent, halogen-free, does not affect the color fastness to light, feels soft, and does not regain moisture and crystallize. 3. Colorless and transparent, non-flammable, non-toxic, non-corrosive and non-polluting. Novista Group supplies APP, MCA, aluminium hydroxide,magnesium hydroxide to global market.
Application Range Of Textile Flame Retardant
2022 / 12 / 03
Fiber fabric flame retardant can treat all kinds of patterns, twill, flannel, canvas, linen, non-woven fabrics and their finished products (such as: clothes, cloth hats, capes, curtains for entertainment venues, shed fabrics, venue curtains , Theater set, safety bag, etc.) and a variety of knitwear (such as: sweaters, toweling, gloves, carpets, etc.). Novista Group supplies DBDPE, BDDP, FR245, TTBP,SR130 to global market.
Raw Materials Used in CPVC Piping
2022 / 11 / 19
All CPVC products used in industrial plants today-such as piping, fittings, sheet and ducting-began as two separate materials: chlorine and ethylene. Chlorine is one of the byproducts of chlor-alkali salt processing. Ethylene is extracted from petroleum that is put in a special facility called a cracker. Manufacturers then react these two materials together to form a new liquid chemical: ethylene dichloride (EDC). Then, through an oxychlorination process, EDC is dehydrated, heated an ultimately broken down into vinyl chloride monomer (VCM).
In The Laboratory: Compounding Solutions
2022 / 11 / 19
The current trends indicate an oversupply of raw materials, a situation that could last for some time. With a large amount of resin on the market, chemical companies are cutting their research and development budgets. This could force compounders to fill the cap, meaning they will have to perform more testing. They may lean on distribution partners for technical assistance. The need for lightweight, more durable and low-emission materials, plus increasing demands on design, are forcing the plastics industry to develop new and innovative materials. Polymer material and compound development takes place in every step of the research and development process to produce materials with different properties to the base material or to produce material with desired qualities, using various additives. In a laboratory, compounders can upgrade or add to the value of polymers or polymer systems through melt blending and mixing of additives to a polymer matrix. Two or more polymers can be combined to create a specialty product with desired properties. Common additives used today include colorants, flame retardants, talcum, glass and additives for changing the optical or mechanical properties. These additives can be processed as pellets, powder or flake.
A Brief Description Of Wood Flame Retardant
2022 / 11 / 19
Wood is a porous and complex natural organic material mainly composed of cellulose, hemicellulose and lignin. Its characteristics are: it does not dissolve or melt under normal processing and use conditions, so the processing method is different from synthetic polymers; wood molecules contain a large number of hydroxyl and hydroxymethyl and other oxygen-containing polar groups, so they have strong hygroscopicity , Poor dimensional stability; besides being flammable, it still has the characteristics of being perishable and chemically degradable. The above-mentioned characteristics of wood determine that the mainstream varieties of wood fire retardants are all water-solvent products, and the dominant addition method is the impregnation method. Novista Group supplies APP, MCA, aluminium hydroxide,magnesium hydroxide to global market.
How To Use Textile Flame Retardant
2022 / 11 / 19
1. Spray method: The fabric should be kept clean and dry before treatment. When spraying, the spray should be sprayed through, and it can be dried or dried naturally. 2. Dipping method: the treated fabric is dipped-pressed (rolling rate: 70%)-dried. Usage: According to the adsorption of the fabric, the dilution ratio of the flame retardant, from the original solution to the maximum dilution ratio of 50% Flame retardant: 50% water, should be determined according to the actual situation. In general, it is recommended to use 70% flame retardant: 30% water. Dosage: Fabric, under normal circumstances, 100 grams of fabric, standard width of 1.5 meters, each linear meter consumes about 50-80 grams of flame retardant. For carpets, about 120-150 grams of flame retardant is consumed per square meter. It should be determined according to the actual situation of the carpet. Novista Group supplies DBDPE, BDDP, FR245, TTBP,SR130 to global market.
PVC injection molding plastic resin -2
2022 / 11 / 12
1.Pay attention to the following points during product design and mold design: Try to avoid sharp corners or abrupt changes in the product, and the thickness should not change too much, so as to prevent the PVC from degrading. 2.The mold should be designed with a draft angle of more than 10°, allowing for a shrinkage rate of about 0.5%. 3.During mold runner design, pay attention to the following points a). The mold injection gate should be slightly larger than the nozzle, and larger than the diameter of the conjunctions in the sprue, so that the PVC material is able to flow into the cavity without being blocked, while the pressure is also balanced. b). Try to adopt the intercepting gate, so that the slag will not flow into the product and cause runner temperature reduction, thus making it easier to form. c). The gate should be designed at the thickest part of the product, with a sufficient width guaranteed, while the length is preferably between 6-8mm, so that the PVC material is able to flow in smoothly.
What's the Difference Between PVC and CPVC Pipe? -2
2022 / 11 / 12
Applications of PVC & CPVC: As mentioned before, CPVC is more suitable for hot water applications up to 200F. PVC is still often used for unheated water as well as for vent and drainage systems; however, CPVC has become widely used for both hot and cold potable water. The more resistant properties of CPVC make it useful for commercial and industrial applications as well. Because of its wider range of applications, CPVC is usually pricier than PVC. That being said, it is still a very cost-effective and versatile material. We recommend the use of PVC for recreational use/building, cold water systems, vent systems, and drainage systems. CPVC is recommended for applications where the maximum temperature will exceed 140 degrees Fahrenheit, but stay under CPVC's max rating of 200 degrees Fahrenheit. Another deciding factor in which material to use is the chemical makeup of media being handled in your application. Though PVC and CPVC both are resistant to many of the same c
Features Of Wood Flame Retardant
2022 / 11 / 12
1: High flame retardant effect, which can prevent flame burning and suppress smoldering (flameless burning, red hot burning); 2: The flame retardant itself is non-toxic and does not pollute the environment during production and use. The pyrolysis products of flame-retardant wood should have less smoke, low toxicity, non-irritating and non-corrosive; 3: Long-lasting flame retardant performance, no heat or light decomposition occurs during use, and it is not easy to be hydrolyzed and lost; 4: Low moisture absorption, good dimensional stability of flame retardant wood; 5: The physical and mechanical properties and process properties of wood are basically not affected; 6: It has anti-corrosion and insect-proof performance; 7: The environmental characteristics of wood such as vision, touch and adjustment are basically not affected; 8: Low cost, abundant sources and easy to use. Novista Group supplies APP, MCA, aluminium hydroxide,magnesium hydroxide to global market.
The Development Trend Of Wood Flame Retardant
2022 / 11 / 12
1) In view of the development of science and technology, in a long period of time, the phosphorus-nitrogen-boron water-based flame retardant system will still be the mainstream of wood flame retardants. Future work is mainly to further improve the resistance to loss and migration. And reduce costs. 2) With the progress of society, people's performance requirements for materials are not only higher and higher, but also more and more comprehensive. Wood protection agents with flame retardant, anti-corrosion, insect prevention, anti-loss and dimensional stability will become wood The main development direction of flame retardants. 3) When a fire occurs, direct casualties and indirect property losses caused by heavy smoke, especially toxic smoke, and indirect property losses caused by hindering rescue operations are often no less than fire losses. Smoke suppression research will become important for wood fire retardants. Subject. 4) With the gradual deepening of people's understanding of flame retardant mechanism, the research of new flame retardant system will wait for attention. It is expected that the intumescent flame retardant system, which has been rapidly developed in the field of synthetic polymer materials, will play a role in the field of wood composite materials. 5) Due to the non-biodegradability of plastics, the amount of recycled plastics will increase dramatically in the next few years, which provides a raw material basis for the manufacture of new thermoplastics-wood composite materials. Such materials will fundamentally avoid
Wood Flame Retardant Classification in china
2022 / 11 / 12
(1) Basic chemical properties (inorganic, organic, etc.) (2) The flame-retardant elements or the combination of flame-retardant elements (phosphorus, nitrogen, halogen, etc.) (3) The method of adding flame retardant to the material (additive type, reactive type) (4) Compound type (acid, alkali, ether, ester, oxide, hydroxide, salt, etc.) (5) Mechanism of action (physical or chemically active flame retardant, gas phase or condensed phase flame retardant) (6) Durability of flame retardant effect (light, heat, chemicals and water, etc.) Novista Group supplies DBDPE, BDDP, FR245, TTBP,SR130 to global market.
PVC injection molding plastic resin -1
2022 / 11 / 12
PVC plastic is a heat-sensitive material that features a poor injection moldability, for which the reason is that an excessively high melt temperature or an excessively long heating time easily causes PVC decomposition. Therefore, the key to molding the PVC products lies in the control of the melting temperature. PVC injection molding plastic resin The heat sources for melting the raw PVC material are usually from two aspects, i.e., the shear heating generated by screw motion and the resistance wire heating provided by the outer wall of the barrel, among which, the former is the main source, while the latter is mostly provided during machine operation. Due to the unsatisfactory heat transfer property of the PVC material, although the outer portion is heated, the inner portion of the material is still in a solid state, and even when the outer portion starts to decompose due to overheating, there may still be an unmolten portion inside. Various reasons must be fully considered during product design, mold design, and the plastic injection molding process, etc. In particular, the special PVC injection molding machine from outstanding manufacturers can be selected to create the ideal product.
Future of Processing Aidsin china
2022 / 11 / 11
Future of Processing Aids Owing to the advantages of using processing aids, they are not likely to be eliminated; however, continuous improvements in processing methods and equipment may make them obsolete. Improvements in the formulation and application of processing aids also might make them more effective and more ethical for their intended use. Finally, companies may opt to select more ethical processing aids or include them in their ingredient list.
2022 / 11 / 11
Introduction Processing aids are substances or additives of natural or synthetic origin used in the production of foods. They are commonly used in a wide variety of products including bakery, confectionery, jams, jellies, meat and produce. The Food and Drug Administration or United States Department of Agriculture must approve processing aids prior to commercial use. They are considered extremely safe and are used in small volumes and do not alter the taste or appearance of the finished product. The objective of this fact sheet is to describe the purpose and use of processing aids in the food industry.
Purpose of Processing Aids in china
2022 / 11 / 11
Purpose of Processing Aids The primary purpose of a processing aid is to facilitate the manufacturing of a food product. Processing aids are used for variety of reasons: Improve product quality and consistency. Enhance nutrition. Help maintain product wholesomeness. Enhance shelf life. Help packing and transportation.
What role does PVC foaming regulator play in processing
2022 / 11 / 05
In terms of technology and quality, PVC foaming regulator can improve the solution elasticity of the product during calendering and make smooth rolling; in pipe extrusion, it can improve the apparent quality, eliminate the phenomenon of "shark skin", and improve extrusion. out rate. As a common additive, the use of PVC foaming regulators can be said to be very common, but what role can PVC foaming regulators play in the processing process? Specifically for the process and products, the PVC foaming regulator can improve the melt elasticity during the calendering process, so that the remaining material between the two rolls smoothly; in the pipe extrusion, it can improve the apparent quality and eliminate the "shark skin" phenomenon. Increase extrusion rate; greatly reduce the number of "fish eyes" in the product when extruding transparently. Increasing melt elasticity in injection molding, thereby reducing injection volume, reducing the "white streak" phenomenon, improving surface gloss, improving weld strength, and adding lubricity processing aids can improve release efficiency, speed up injection cycles, and increase output, to prevent the phenomenon of "blooming" caused by the precipitation of external sliding; in blow molding, it can improve plasticization, reduce the fish-eye phenomenon, improve the elasticity of the melt, and make the molding thickness more uniform. After this brief introductio
Reasons why CPE can be used as an impact modifier
2022 / 11 / 05
As an excellent impact modifier, CPE chlorinated polyethylene has been applied in many aspects, which can greatly improve the impact resistance of hard products and improve processing fluidity; at the same time, it also has good chemical resistance, low-temperature performance, excellent weather resistance, and compatibility. At present, it is the most widely used and most economical impact modifier in the PVC pipe profile industry. It can improve the impact resistance and aging properties, especially for large-diameter pressure-resistant liquid pipelines. In order to improve the pressure-bearing capacity and increase the Most of the service life is made of chlorinated polyethylene. In addition, CPE resin is used as an impact modifier, and the compatibilizer is used in flame retardant ABS, SAN, HDPE, and PP, which can improve the impact resistance and flame retardant effect of the impact modifier.
Improvement of Resin by Processing Aid of CPE
2022 / 11 / 05
1. Melt rheology modification: PVC melt has the disadvantages of poor strength, poor ductility and melts fracture, and PVC processing aids can improve the above problems of melt. Its mechanism of action is: to increase the viscoelasticity of PVC melt, thereby improving die expansion and increasing melt strength;2. Endows lubricity: The PVC-compatible part of the processing aid is first melted to promote melting; while the incompatible part with PVC migrates out of the molten resin system, thereby improving mold release;3. Promote resin melting: When the PVC resin is heated under shearing force, the processing modifier first melts and adheres to the surface of the PVC resin particles. Based on its compatibility with the resin and high molecular weight, the viscosity, and friction of the PVC increase. This effectively transfers shear stress and heat to the entire PVC resin, accelerating PVC melting.
2022 / 11 / 05
Magnesium hydroxide is the second largest sales volume of inorganic hydroxide flame retardants. It is a white to light white lens powder with a relative density of 2.4 and a Mohs hardness of 3.0. When heated to above 450°C, the weight will be reduced by 30.9% (mass fraction) due to the loss of water. When magnesium hydroxide is used as a flame retardant, its purity requirements are quite high, containing at least 98.5% magnesium hydroxide, and many grades are higher than 99.5%. Most flame retardant grades are white powders, with particle diameters ranging from 0.5 to 5 μm. The surface area is 7~15 square meters/g. Most of the magnesium hydroxide used as a flame retardant has been surface treated to improve its dispersion and distribution in the polymer. Magnesium hydroxide and aluminum hydroxide are used in a higher dosage, generally 50% to 70%. Due to high purity requirements and surface treatment requirements, magnesium hydroxide is more expensive than precipitation grade aluminum hydroxide. Magnesium hydroxide is used to process thermoplastics and thermosetting resins with a processing temperature of 200~225℃. Mainly used in EVAC, PP and blends, ABS and blends, fluoropolymers, PPE and blends, polyimides, etc. Cannot be used for thermoplastic polyester. Magnesium hydroxide is used together with aluminum hydroxide to meet different requirements. Magnesium hydroxide is also used in parts such as wires and cables, racks, building
Classification Of Flame Retardant Masterbatch
2022 / 11 / 05
Due to the advantages of flame retardant masterbatch (masterbatch) used in plastics in flame retardant efficiency, environmental protection, improved production efficiency, convenience, etc., it has become an effective substitute for traditional flame retardants and has been widely used in plastic manufacturing. Pelletizing, extrusion, injection molding, etc. The flame-retardant masterbatches that can be promoted are halogen-based (Br, Cl), phosphorus-based (red phosphorus, phosphorus compounds, etc.), nitrogen-based (usually called intumescent flame-retardant masterbatch) and inorganic flame-retardant masterbatch (hydrogen Mainly alumina, magnesium hydroxide, etc.). Halogen-based flame-retardant masterbatch (masterbatch) is currently the most respected flame-retardant masterbatch in most resins. The reason is that its own organic properties make it have a better affinity with plastics, so the mechanical properties of the finished products are reduced. Less and high flame retardant efficiency, less addition in resin, high cost performance. The disadvantage is that some are biologically toxic, which is prohibited in some international standards. And due to poor environmental performance, especially in Europe, there is a tendency to be eliminated. Phosphorus-based flame-retardant masterbatch is also a commonly used product. In some resins, its flame-retardant efficiency is even higher than that of halogen-based resins. However, it has poor color coordination, poor compat
Characteristics Of Flame Retardant Masterbatch
2022 / 11 / 05
1. Easy to use: flame retardant masterbatch (masterbatch) is mostly tablet-like or strip-like tablet-sized particles, which are exactly the same size as general plastic particles, which improves the compatibility between them, makes it easier to disperse and add, and is hygienic And reduce volatile waste. 2. Good compatibility with resin: In general, the flame retardant masterbatch (masterbatch) has been specially treated to improve its compatibility with plastic resin, so that its addition in the resin will not change even if the amount is large. Prone to problems such as delamination, blooming, and patterns. 3. Reduce costs and increase the added value of products: often through the addition of flame-retardant masterbatch (masterbatch), general plastics have or are close to the application requirements of engineering plastics, which increases the added value of products and reduces the cost of raw materials. Novista Group supplies DBDPE, BDDP, FR245, TTBP,SR130 to global market.
the main applications of PVC granules
2022 / 10 / 29
the main applications of PVC granules are divided into: 1. PVC general soft products. The extruder can be extruded into hoses, cables, wires, etc.; with injection molding machine with a variety of molds, can be made into plastic sandals, soles, slippers, toys, auto parts and so on. 2. PVC transparent sheet PVC added impact modifier and organotin stabilizer, mixed, plasticized, calendered into a transparent sheet. It can be made into a thin-walled transparent container by thermoforming or used for vacuum blister packaging, and is an excellent packaging material and decorative material. 3. PVC foam products When soft PVC mixing, add appropriate amount of foaming agent to form a sheet, foamed into foam, can be used as foam slippers, sandals, insoles, and shockproof cushioning packaging materials. It can also be used as a low-foaming hard PVC sheet and profiled material, which can be used as an alternative building material. 4. PVC transparent material After the PVC and the additive are mixed and plasticized, a transparent or colored film of a predetermined thickness is formed by using a three-roll or four-roll calender, and the film is processed by this method to become a calendered film. It can also be processed by shrinking and heat sealing bags, raincoats, tablecloths, curtains, inflatable toys, etc. Wide transparent film for greenhouses, plastic greenhouses and mulch. The biaxially stretched film, which is subjected to heat shrinkage, can be used for shrink packaging. 5. PVC coated products The artificial leather with a substrate is coated with PVC paste on cloth or paper, and then plasticized at 100 degrees Celsius or more. It is also possible to first roll the PVC and the auxiliary into a film and then press it together with the substrate. The substrateless artificial leather is a soft sheet which is directly rolled by a
advantages and disadvantages of calcium zinc, lead salt stabilizer
2022 / 10 / 29
1. Lead salt stabilizer Advantage: Good thermal stability, especially good long-term thermal stability; ⊙Good electrical insulation and weather resistance; ⊙ Low price; ⊙Good processing performance suitable for various processes; Disadvantages: ⊙Color aberrations cannot be used for transparent products! Two words: poisonous (ˇˍˇ) 2.Calcium and zinc stabilizer advantage: ⊙Green products; ⊙ Thoroughly solve the phenomenon of sulfur and lead pollution; A small amount of lead in the material may be combined with sulfur in the air, especially in high temperature and high humidity places. ⊙Good switching adaptability; if you originally used lead salt stabilizers, replacing other stabilizers may cause cross-contamination, but calcium and zinc stabilizers can dispel your concerns. ⊙ Light weight, can increase the inorganic filler appropriately, reduce costs. Second, the use of calcium and zinc stabilizers: ⊙Confirm the environmental protection of the stabilizer formula; you need to pay attention to whether the content of heavy metals (lead, cadmium, tin, barium) can meet the product and meet the requirements of the new national standard. ⊙Calcium and zinc stabilizers have strong internal lubrication and require more external lubricants. This is described below. ⊙Calcium and zinc stabilizers have weaker thermal stability than lead salts, a narrower processing window and higher control requirements. Pay attention to the mold cleaning cycle during operation. The calcium and zinc stabilizer lubricant is added in a large amount, which easily leads to increased precipitation, which affects the mold cleaning cycle. For large-scale production, it has a greater im
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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.