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How to control the resilience and flexibility of the silicone rubber hose?
Silicone rubber hose production methods have many kinds, there are extrusion, molding, gas phase, platinum, precipitation and so on, but for the higher requirements of the silicon rubber hose, may be some production methods are not qualified. Among them, there is the control of the resilience and flexibility of silicone rubber tubes. The following is about the gas phase method of silicone rubber hose and other methods of comparison.
The gas phase silica gel tube is better than the precipitation method. If it is not the right choice for the treatment of the wrong words, the normal situation
Is so. If the rebound is not good, it is recommended that two times of curing. Or add some other additives, do not match the raw materials
Add in will affect the performance of silicone elastomer should be very good.
It is important to use proper crosslinking agent and crosslinking density of vulcanized rubber, not enough, can increase the bridging agent to try. Mining
Strong reinforcing silicone rubber with silica, elastic toughness will become relatively worse, generally refers to the silica gel with good elasticity
High compression permanent deformation properties of silicone rubber, which is two different performance indicators.
Silicone tube production if encountered similar problems:
1, you can directly buy a silicone rubber mixture, the provisions of the supplier selection of good toughness, which is very important to do O ring;
2, it is best not to use zinc stearate, will affect the compression performance;
3, adjust the maintenance conditions, the appropriate extension of time is generally 170 ~ 165 degrees Celsius under 6 ~ 8 minutes;
4, after the treatment of surface strengthening agent the best use of silica, precipitated silica can only satisfy the general ordinary extrusion molding products
.
In this paper, from Shenzhen City, Qi Yu Silicone Rubber Co., Ltd.: http://www.szhcty.com/news_v.asp? Id=640
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