|
Analysis of the anti tear of silicone tube
Existing silicon hose products hardness 40, gum rate close to 90%, foreign products, silicon rubber hose with scissors cut a small mouth torn by hand is not easy to be torn, domestic silicone tube products cut a small mouth torn, under the premise does not change the hardness of have what good method of improvement? How to enhance the tear resistance?
First of all, with the ratio of 90% or more silicone tube products, in addition to CR and NR and other self reinforcing rubber, the other will certainly be cracked! In addition, the strength of pulling force? With a plastic rate of 90%, is indeed very high, in fact, sometimes too high adhesive rate and can not improve some aspects of the performance. Such a low hardness, reinforcing obviously try Qiangwei powder, hardening slow, a bit better than the tear of carbon black, white carbon black and carbon black with easy high hardness. 90% containing plastic rate, mainly you have what, there is no filler, these are important reference ah.
In short, with a high percentage of silicone rubber hose formula, formula with hand tear on the end of the words suggest that you check whether the system is right, do not add strong agent to avoid increasing the hardness and elasticity, must use the isotropic reinforcing filler, curing system as far as possible the use of traditional system, and the use of 2--3 promoter selection of curing curve is flat, and must be controlled to a good degree of sulfur.
This paper is from Shenzhen,, id=572?
This love or feel this to help you, please share it with your friends ^_^
|
Online Service 