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Can food grade silicone and industrial grade silica be mixed?

June 15, 2023

Food grade silica gel and industrial grade silica gel are collectively called mold silica gel, but the two fields are different. Food grade silica gel refers to the mold of food series, and industrial grade silica gel refers to the mold of architecture, handicraft and other industries!

Food grade silica gel is an environmentally friendly, non-toxic and harmless silicone that can be used in food molds. It has high transparency, odorless, non-yellowing, non-blooming, soft, high tear resistance, high insulation and resistance. Grindability, high temperature resistance, flame retardant, anti-aging, environmental protection, tensile strength, stable performance and so on.

Industrial grade silica gel generally consists of five components: base rubber, cross-linking agent, catalyst, filler and additive. Usually, the base rubber, cross-linking agent and filler are made into one component, and the catalyst is used as a single component. Also known as two-component vulcanized silica gel, RTV-2 room temperature curing silica gel. The vulcanization is carried out at room temperature, and an appropriate amount (1% to 5%) of a catalyst (curing agent) is added to the main rubber component to form a crosslinking reaction to form a flexible, elastic colloid.

Food grade silica gel is an environmentally friendly series. Industrial grade silica gel is not environmentally friendly silica gel, so the two can not be mixed. If used in combination, it will cause the food grade silica gel to not directly cure, not only can not be mixed, even if it has been used industrial grade. The use of food grade silicone in mold silicone containers will also cause food grade silicone to not cure! Consult liquid silicone can contact week S 183 1677 2378 weeks S (WeChat same number), exclusive: hfdd1993!
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