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How to improve the tear strength of silicone tube?
The general compound in products, are often unable to meet certain products of tear resistance requirements, under considering the cost, how to improve the silicone tube of tearing strength?
Ask if you can in methyl vinyl silicone rubber was added to 20 to 30 parts by weight of a new gas phase white carbon black, choose the 0.5 to 0.7 parts there is 2.5 to 2,5 hexane as a vulcanizing agent and tearing strength of low hardness can reach 15 to 20kN/m of silicone rubber vulcanizate. With part of fumed silica can significantly improve the tear performance of silicone tube, but should pay attention to the use of structural control agent! In addition to the above, it can also be added to 0.3% of the internal release agent to help release the release to reduce the occurrence of tear.
To improve the silicone tube tearing strength. There are several ways. A is different vinyl mix (mix of high and low) or joining a high vinyl silicone oil, another to join a high specific surface area of gas phase white carbon black, or join some short fiber. And so on. Choice of silicone rubber to molecular weight as high as possible, the distribution is narrower.
Shenzhen silicone hose manufacturers: you can use MQ resin fill, but the cost is more that, and not easy to control. Gas phase white carbon black or enhance the filler content and adjust vinyl are more commonly used methods. Recommended replacement adhesive type, the use of tear is better Q. If you added in, the operation is more trouble, the mixing efficiency is low, and dispersion of or good, will affect the performance, more harm than good ah.
This paper is from Shenzhen, odd Silicone Rubber Co., Ltd.: id=425? Http://www.szhcty.com/news_v.asp
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