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Silicone tube production, curing at room temperature and the curing rate of the silica gel slow down and precipitation?
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Some customers ask, silicone tube production, silicone rubber in the summer placed about three months, why the curing rate will slow down more than two times,
And at the bottom have a more serious powder material precipitation, the hardness in the 60A, which is what happened?
Silicone rubber precipitation is very normal, you can continue to use after mixing, curing may be a slow way to save the problem can be a high temperature
, the seal is not good, may lead to catalyst oxidation or decomposition, etc., can also be cross - linking agent volatile, etc.. Precipitation is more serious,
And after the mixing of the solidified block will have a bubble, the viscosity of the glue in about 2500.
Silicone rubber to share: silicone tube production, we must first ensure that the curing temperature, curing temperature is a great impact on the curing rate. So
After watching your sample seal is good, the catalyst may be oxidized to reduce the catalytic efficiency. Also pay attention to the use of fillers, some
Filler on the catalyst also has a effect.
1 speed change is mostly related to temperature, also does not rule out the catalyst stability.
2 on the precipitation, the basic can be sure that the problem of packing, you can choose a smaller particle size filler or a small amount of anti settling agent.
This paper is from Shenzhen,, id=505?
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