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Because the problem foaming holes less than how processing silicone tube?
Foaming technology of silicone tube is always a prerequisite of silicone tube quality. Is a fundamental of a silicon rubber hose products factory based on the general, their technology is not out of, the core technology of general control in several silicone rubber products factory giant hands. The following Xiaobian for example silicon tube due to insufficient foaming holes problem how to deal with?
First of all, the reasons for problems of insufficient foaming holes of the silicone tube are mainly the following 6 points:
(1) foaming agent quality problems
(2) low glue degree of plasticity
(3) the mixing temperature is too high, the foaming agent decomposition at early stage
(4) rubber park for too long or too high temperature of park, part of the foaming agent evaporation or decomposition
(5) curing speed
(6) the pressure is too high, exceeding the foaming agent gas formed by the internal pressure, foaming holes caused by insufficient;
Secondly, first of all, because of insufficient problem processing method of foaming holes corresponding to the silica gel tube
(1) check whether the foaming agent for a limited period, whether or not qualified;
(2) check the sizing degree of plasticity is consistent with the standards, low degree of plasticity should be added to the mixing, increasing the degree of plasticity for hole;
(3) check the mixer discharge temperature is too high, roller temperature is too high, the glue material whether coke burning. Because mix high temperature smelting can be a small amount of blended treatment or the addition of foaming agent, heavy industry;
Time is too long (4) park backmixing material should supplement processing;
(5) the adjustment of the formula, decomposition temperature check vulcanizing agent and the critical temperature of the foaming agent is close to, and coordinate each other, so that the speed of vulcanization and foaming speed matching;
(6) adjust the pressure.
TAG: silica gel tube
This article from the Shenzhen City Qiyu Silicone Rubber Co., Ltd.: http://www.szhcty.com/news_v.asp? Id=243
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