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Application of silicone adhesive sealant Three

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The deacetic acid type silicone sealant is the most sold sealant on the market. Because the by-product released during vulcanization is acetic acid, and acetic acid is corrosive to metal, it is mainly used for the sealing of architectural glass and ceramics, commonly known as glass glue. Less used in industry; the small molecular weight by-products of amide-type silicone sealant which are removed during vulcanization have a boiling point of up to 200 oC, which is difficult to volatilize to form a clean rubber material, and its application is limited. Commercial products are rarely used. The deacetone-type silicone sealant releases neutral and non-corrosive small molecular by-products when vulcanized, and is most suitable for application in the field of electronic appliances. However, due to the difficulty in synthesizing the cross-linking type silicone rubber cross-linking technology, the cost is relatively high. Higher, limited the use of de-acetone type; the removal of the alcohol-free silicone sealant is a low molecular alcohol. Substance (methanol, ethanol), low toxicity, especially non-corrosive to metals, therefore, it is widely used in the construction field (especially building curtain wall) and industry; the ketone is removed when the deodorized silicone sealant is vulcanized. Bismuth (methyl ethyl ketone oxime), which is an alkaline substance, has certain toxicity and has a certain corrosive effect on metals. However, due to its fast vulcanization rate and good performance, it is also widely used in construction and industrial fields.

The cost and performance advantages of the dealcoholic and dissociated type make it the most common silicone sealant currently used on the market.

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