PVC 抗冲改性剂的分类

PVC impact modifier will sometimes also play a role in plasticizing, so it can also be regarded as plasticizer.The impact modifiers used for PVC resin are as follows:

(1) CPE

CPE namely chlorinated polyethylene, composed of chlorinated HDPE part due to the presence of chlorine atom, CPE with softness and - some rubber performance, and make CPB polar polymer and has the same polar groups with PVC, increase the compatibility with PVC, thus can keep enough van der Waals force between polymer chain so as to improve the impact resistance of the PVC, the toughening effect.

(2) ACR

ACR, as a novel modifier of POLYvinyl chloride, is a kind of acrylate copolymer.At present, THERE are basically two kinds of ACR used as PVC modifier: one is used to improve the processing performance of hard PVC, which is processing modifier;The other is the impact modifier used to improve the impact strength of PVC products.The difference between the chemical composition, ACR impact modifier containing acrylic acid ester crosslinking elastomer formation of the nucleus, nucleus is a ethyl acrylate methyl methacrylate copolymer composed of shell ACR and PVC blend system and increase the impact strength of PVC comparable o times above, but also greatly improve its tensile properties, especially suitable for outdoor hard PVC plastic products.

(3) MBS

Anti-impact modifier MBS is a core-shell copolymer made of MMA grafted butadiene latex after salting out and drying. Modified PVC can improve its impact strength and comprehensive performance. Due to its similar refractive rate with PVC, modified PVC has better transparency, so it is widely use.

All impact modifiers are avaible for supplying, pls contact freely.