Complaint
Curing agent N, N' -m-Phenylenedimaleimide, which is named as HVA-2 by American company, is a multi-function rubber agent. In the rubber process industry, it can be used as either curing agent, coagent for peroxide curing system or anti-scorcher and adhesion promoter. In addition to general purpose rubber, it can be applied to plastics, special purpose rubber and rubber-plastic blends.
| Item | Spec |
| Appearance | Yellow or brown powder |
| Melting point, ºC | ≥198 |
Weight loss on heating, % | ≤0.5 |
Screenings(0.150mm), % | ≤0.1 |
| Ash, % | ≤0.5 |
In NR, combining with sulfur, it can prevent compound from reversion during vulcanization and improve heat resistance, heat build-up, aging resistance and adhesive strength between rubber and cord or steel wire as well as modulus of vulcanizate. The shoulder-blowing problem of heavy-duty bias tire cab be solved by using HVA-2 in tire shoulder buffer stock. It is especially applicable for large size and thick rubber articles, special tire and all kinds of miscellaneous fabricates rubber goods.
In special purpose rubber, such as CR, CSM, SBR, NBR, IR, BUR, acrylate rubber, silicone rubber and rubber-plastic blends, HVA-2 can act as secondary curing agent, giving rubber compounds improved cross-link behavior, heat resistance, compression set, adhesive strength between rubber and cord or steel wire and scorch safety during fabricating. The peroxide amount can be reduced when using HVA-2 and it is applicable to high temperature vulcanizing system.
HVA-2 is sulfur free curing agent and be used as a substitute for thiurams, thiazolea and other sulfur containing curing agents in cable compound to solve the problem of copper wire blackening due to copper sulfide resulting form the reaction between copper wire and sulfur containing curing agents.
Usage: anti-scorcher, 0.5-1.0phr, curing agent 2-3phr, for improving compression set, 1.5-2.0; for improving adhesive strength, 0.5-5.0.
25kg/bag
Store closed containers in a cool, dry, well-ventilated area. Avoid exposure to direct sunlight.
Hefei SENOTECH New Materials CO., LTD., is a professional supplier of Plastic and Rubber Chemicals, Mineral Filler, Petroleum Resin, Detergent Chemicals, Aramid Fiber etc. for all kinds of industry, which covers Rubber & Plastic Industry, Paint & Coating Industry, Adhesive & Sealant Industry, Detergent & Cleaning Industry etc.
SENOTECH register in Hefei,China, and set the office in Hongkong, China. All the time, through superior goods quality and sincere professional service, we have successfully exported our goods to more than forty Countries, such as European, Japan, Vietnam, Malaysia, India and others. All our products get good comments from our clients. we select superior manufacturer who produce according to the top standards.
SENOTECH not only provides customers with high quality combination products, but also the expert knowledge as well as best service at any time. Look forward to building a strong and profitable association with the customers from the global world.
Q: Which payment is available for your company?
A: T/T, L/C at sight for new customer, If our cooperation is long-term and stable, we can discuss for better one.
Q: How can you guarantee the goods you offer is qualified?
A: Most of the suppliers we cooperated are ISO-certified companies, some factory even is REACH-certified, and the quality is guaranteed. If necessary SGS test report is available at buyers' account.
Q: May I get sample before placing order?
A: Yes, Sample are available. 500g sample is free, but pls help to afford freight cost. We will ship the sample by FedEx, UPS, DHL etc, within 7 days after received the freight cost
Q: When is the delivery time after payment?
A: Usually is within 30 days after received deposit or LC.
Q: Can you do OEM or custom package?
A: Yes. We can custom bags according to your request.
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