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Whether related to the hardness of silicone rubber mixing process?
Silicone tube according to different needs of the required hardness is also different. Such as food grade silicone tube and medical silicone tube is not the same as the hardness of the. But the hardness in addition to their own intention to control, but also with the rest of the factors related to it? For example: whether related to rubber mixing process? The following small series for example analysis.
For example: with a silicone tube formula, open mill mixing of rubber hardness density Ficoll refining mill with low about 10 degrees. This is caused by mixing way?
Small series think it is a bit of a relationship, but the hardness of the silicone tube is not so much, 10 degrees? It's not about the other side. There is a difference between the opening and the refining, but not so much! Especially mixing equipment, mixing method, mixed refine time difference, open mill and dense mixing machine, mixer is certainly a difference, open mixing mill for a long time, the gas may lead to low hardness, a refueling and refueling on the difference of but differ by 10 degrees is too big it!
Silicone tube production of open rubber mixing mill is experimental small open tried machine, densely refining mill when I haven't seen, I think should not be such a big difference, but colleagues test is such a big difference. There must be a relationship, the main effect of the degree of mixing! Difference is too big a little, check weighing apparatus, to eliminate these factors, if weighing not allowed. This sometimes misleading. May you open mixing machine, mixer, waste a lot of filler..
In short, there is a possibility that the silicone tube is too high, or higher than the degree of open! Mill feed slow, mixing time, hardness, will be lower, but still a little over 10 degrees. Open mill of the specimen and dense mixer probable error of 3 degrees, but if mixer beat, after extrusion or thin followed by open smelting machine playing almost, it is estimated that light from dense mill out of the material and the rubber less damage, caused by high Mooney.
This paper is from Shenzhen,, id=576?
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