Company Details

Shandong Novista Chemicals Co.,Ltd (Novista Group) [Shandong,China] Business Type:Manufacturer , Service , Distributor/Wholesaler Main Markets: Africa , Americas , Asia , Caribbean , East Europe , Europe , Middle East , North Europe , Oceania , Other Markets , West Europe , Worldwide Exporter:71% - 80% Certs:GB, OHSMS, FDA

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Raw material requirements for PVC foamed board

2021-10-20

Raw material requirements

PVC resin: Generally, type 8 resin is used. The gelation speed is fast during processing, the processing temperature is relatively low, the product quality is stable, and the density is easy to control. In recent years, many manufacturers have switched to Type 5 resin.

Selection of stabilizers: In consideration of environmental protection and good results, rare earth stabilizers are preferred, but due to the relatively high price, they have not been promoted. With the increase of environmental protection requirements in the future, the market for rare earth stabilizers will usher in a bright future. Calcium-zinc stabilizers have problems with zinc burning and slightly poorer stabilizing effects. Currently, the most commonly used is lead salt stabilizers. Foamed boards have a wide cross section, long runners, and yellow foaming to generate more heat. The stabilizer is required to have a high lead content and a good stabilizing effect, otherwise the product is prone to various problems. .

Selection of foaming agent: Foaming agent AC emits a large amount of heat during the decomposition process, which easily leads to yellowing in the middle of the cross section. This requires a certain amount of white foaming agent. The decomposition plays the role of absorbing excess thermal energy. The number of agents must be large to achieve uniform foaming without large cells.

Foaming regulator: After years of research and development, the process technology of foaming regulator ACR is becoming more and more mature, and the performance quality is more and more stable. According to the thickness of the foamed board, the thin board should be selected to be plasticized quickly, and the thick board should be used. Foaming conditioner with strong plasticized slow solution strength.recommend our TF100/102/530/200, Processing Aid.

Lubricant selection: follow the principle of taking into account the lubrication in the early, middle and late stages, so that the material is protected by lubricants at all stages, and adhere to long-term stable production without precipitation.

Foaming aid: In production, a small amount of foaming aid zinc oxide can be added to improve the foaming quality and foam structure, and a small amount of aluminum silicate can be added to reduce precipitation.

Pigments: In order to achieve a more beautiful effect, titanium dioxide and fluorescent whitening agents can be added, and antioxidants and ultraviolet absorbers can be added to improve weather resistance.

Filler: Light calcium carbonate or heavy calcium can be used instead of active calcium.

welcome for inquiry: mandyzhang@novistagroup.com
whatsapp:86 13563682728

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Mr. Ron Han

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manager.han@novistagroup.com

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