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Crosslinking agent TAIC
In the peroxide vulcanization system, the addition of cross-linking agent TAC or TAIC will slightly delay the scorch time of vulcanization. With the extension of the vulcanization time, the cross-linking agent will obviously promote the cross-linking effect. It may be because in the early stage of the vulcanization reaction, the cross-linking agent molecules themselves undergo cyclization polymerization, and are grafted with rubber molecules to consume part of the rubber molecule free radicals. These free radicals should produce normal without cross-linking agent. Chemical cross-linking. With the extension of the vulcanization time, the crosslinking reaction between the double bond of the allyl group and the rubber dominates, forming an active agent bridge, thereby improving the crosslinking efficiency. The difference between the vulcanization effect of TAC and TAIC depends on the difference in molecular activity. Due to the similar structure, the difference in vulcanization effect is not obvious.
Usage:
1. Crosslinking modifier for various thermoplastics (polyethylene, polyvinyl chloride, chlorinated polyethylene, EVA, polystyrene, etc.). The amount of thermal crosslinking is generally 1-3%, and the addition of dicumyl peroxide (DCP) is O.2-1%; the amount of radiation crosslinking is 0.5-2%, and DCP can be no longer added. After cross-linking, it can significantly improve the heat resistance, flame retardancy, solvent resistance, mechanical strength and electrical properties of the product. Co***red with the peroxide system alone, it has a significant improvement in product quality and no odor. Typical applications are polyethylene, polyethylene / chlorinated polyethylene, polyethylene / EVA, cross-linked cables, and polyethylene high and low foam products.
2. Ethylene propylene rubber, various fluororubbers, CPE and other special rubber vulcanization aids (combined with DCP, the general dosage is 0.5-4%), can significantly shorten the vulcanization time, improve strength, wear |
| Company: |
Foshan Shunde District Hanbo Trading Co., Ltd.
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| Contact: |
Mr. honghe wang |
| Address: |
Shop P-11, Longwan Haoting Phase II, Longjiang town, Shunde District, Foshan |
| Postcode: |
528318 |
| Tel: |
86-757-29813681 |
| Fax: |
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| E-mail: |
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