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What are the reasons for the yellow transparent silicone tube?
Latex tube will be stored at room temperature with high temperature silicone tube will be yellow. The existing problem is that the transparent silicone tube with the need to contact with food, at 200
After the high temperature of 4 hours after the emergence of the Yellow phenomenon, what is the matter?
With silica gel high anti - yellow C-15, may be the problem will be resolved. General food grade products have this requirement. Two times to prevent sulfur yellow,
Must use anti - yellow catalyst + anti - yellow agent. Both are indispensable but this two will make in oil pressure production a little sticky, is to pay attention to things.
Silica gel plus two or three thousandths of a hydrogen containing silicone oil and high hydrogen containing silicone oil can solve the yellowing of, but that product may somewhat brittle and sticking to the die.
In the mold is sprayed on a layer of silicone oil to solve the demoulding problem, besides it can only use platinum bridge.
Shenzhen odd Yu silicone hose manufacturers for your analysis: with anti yellow agent and anti - yellow agent of course is a good idea. But it's also your use to pay attention.
The silicone tube itself is ideal, can not be added too much internal release agent, zinc stearate, so communicate with the supplier inside, inside
Whether it has hydrogen containing silicone oil, provide anti - yellow effect, powder is very important, the content of the iron inside the high will be yellow and then will be yellow.
You can test, with ordinary curing agent (no anti - yellow) and with a yellow agent of the curing agent contrast, do not pay attention to hard
Fatty acid internal release agent. If it is not good, it is recommended that you change other rubber or use platinum sulfide agent. In the environment
The presence of sulphur or sulphur carrier (such as the oven two baked sulphur cured products) will also cause silicone tube yellowing.
This paper is from Shenzhen, odd Silicone Rubber Co., Ltd.: id=415? Http://www.szhcty.com/news_v.asp
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