The cause of the transparent silicone seal yellow have? - - - - - - Dongguan DongSheng di sealing products co. , LTD

Transparent silicone seal normal put a few years will not yellow, but sometimes, in the production of some transparent silicone seal looks yellow, if changed color. Transparent silicone seal why yellow? A, vulcanizing vulcanizing properties are divided into regular and resistance to yellow. 1. Normal not fight yellow vulcanizing agent, used in some can be used for dark or non exposed the silicone seal for color request is not high. 2. Resistance to yellow vulcanizing agent applied to the need to appear bright, color is shallow, and a need to color. Two, transparent silicone seal in the molding process, production process control is bad result in transparent silicone seal after molding color yellow main problems are: 1. Mold temperature is too high 2. Curing time is too long. 3. Three after the second plus sulfur, the poor quality raw material itself sometimes we added resistance to yellow in the rubber seals vulcanizing agent, but the transparent silicone seal is still looks yellow after forming, it could be the raw material of Huang Nengli is too bad, bad for raw material yellow resistance of material suggestion is directly refueling. 18 years of silicone seal factory, provide one-stop processing customized various silicone seal, o-rings and other silicone products, the company introduced advanced intelligent production equipment and testing equipment, automatic batching system, mixer line, extrusion line, purifying workshop, fully automatic sorting equipment, automatic packaging machine, etc, more than 200 sets of equipment, vulcanization unit covers from 50 t to 1000 t, large product customization!
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