Kangda Bathroom Co.,Ltd

Hangzhou Kangda Bathroom Co.,Ltd

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Hangzhou Kangda Bathroom Co.,Ltd

Add:Dangshan, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Prov., China

Contact Us:STAR SHI




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PVC Foam BoardEmbossed PVC Foam Board BoardLaminated PVC Foam Boardfoamed pvc sheet

The Role Of Processing Aids In PVC Foamed Sheets

ACR class of processing aids to promote PVC melting, improve surface finish, improve the melt elasticity, enhance the elongation and strength of the role of the melt. Is conducive to covering bubbles, to prevent cell collapse. The molecular weight and amount of the foaming agent have a significant effect on the density of the foamed sheet: as the molecular weight increases, the melt strength of the PVC increases, the density of the foam sheet can be made lower, and the amount of the modifier Have the same effect. But this effect does not have a linear relationship, continue to increase the molecular weight or increase the amount of the role of reducing the density is not very obvious, the density will tend to be constant.

There is an important relationship between the foaming agent and the foaming agent, and the density of the foamed sheet is in equilibrium with the foaming agent, and at this equilibrium point, the density of the foaming sheet is not affected by the blowing agent content , Maintaining a constant, that is, increasing the amount of blowing agent can not reduce the density, the reason for this phenomenon is due to a certain amount of foam regulator dosage, PVC melt strength is limited, excessive gas lead to cell collapse or merge.

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