The reason of yellowing on the surface of high temperature resistant silicone tube
Some high temperature resistant silicone tube, placed at 200 ℃ high temperature for a period of time will appear yellowing phenomenon. High temperature resistant silicone tube manufacturers to analyze the reasons for you, want to understand the friends can pay attention to the following content.
1, due to high temperature silicone tube in the production did not control the mold temperature and vulcanization time.
2, the silicone rubber used in the hydroxyl content is too much, high temperature aging.
3, the amount of catalyst used, or the quality of the catalyst used is not qualified, resulting in high temperature resistant silicone tube yellowing phenomenon.
4, adding too much internal release agent and zinc stearate, the iron content inside is too high, resulting in yellowing of the surface of the high temperature resistant silicone tube
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