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Powder NBR(Special for PVC modification

Powdered nitrile rubber(PNBR) is a copolymer of butadiene and acrylonitrile polymerised at low temperatures and made by a special process as a powdered elastomer. The raw rubber is available in the form of blocks, emulsions, granules and powders. Powdered NBR is usually available in particle sizes of 0.3-0.6mm, has good flowability and it has the basic properties of rubber. In terms of reprocessing, the cutting process is omitted compared to block rubber, enabling dry mixing of the powder. In addition, no preheating is required for processing, which results in good dispersion and shortens the mixing time. It can also be mixed directly with compounding agents for extrusion or injection moulding, saving energy and reducing heat build-up during processing to reduce scorching. The product does not agglomerate during transport.
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Performance advantage:
1、Reduce plasticizer migration.
2、Improved heat resistance.
3、Improved oil resistance.
4、Improved flexibility and cold resistance.
5、Improved wear resistance.
6、Reduce the compression permanent deformation.
7、The expansion rate of the extrusion mouth is reduced, the melt is more stable, and the dimensional stability is improved.
8、It has obvious toughening effect on hard PVC and improves impact strength.

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