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America, Inc. |
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555 Theodore Fremd
Avenue, |
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Suite C-206 |
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Rye, NY 10580 |
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TEL: 914-921-5400 |
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FAX: 914-921-8822 |
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info@chissony.com |
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Sila-Ace |
Introduction |
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Chisso Silane Coupling Agents (Sila-Ace) are illustrated below in a general manner.
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Si contains a carbon chain® with functional groups (for example, vinyl, amino, chloro, epoxy, methacryroxy, etc.) that react with organic materials such as polymers, and X (for example, chloro, methoxy, ethoxy, methoxyethoxy, etc.) that react with inorganic materials such as glass.
For the respective grades of silanes, see the tables on pages 8 and 9.
Silane Coupling Agents are widely used as mediators binding organic materials to inorganic materials. They have the characteristics of improving electrical properties and mechanical strengths of materials in wet or ordinary conditions.
Silane Coupling Agents have mostly been used in reinforced plastics (FRP, FRTP).
Their use in electric cables of cross-linked polyethylene is now attracting much attention.
Other uses are as follows: resin concrete, sealant primers, shell molds, brake linings, polishers, paints, adhesives, printing inks, dyeing auxiliary agents, anti-oxidants for copper, flooring materials of vinyl chloride, etc.
The coupling mechanism is illustrated as follows.
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A silane coupling agent is at first hydrolyzed to produce silanol, which forms metal-oxygen or siloxane bond with the inorganic material on one side. On the other side, R, which has functional groups, reacts with the organic material to produce a chemical bond. As a result, the organic material and the inorganic material are tightly bound to each other.
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Reactivity |
Alkoxy groups of silane coupling agents react with water to form silanol groups which form siloxane bonds through a condensation reaction.
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*Unsaturated silane Radical polymerization
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*Aminosilane
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*Epoxysilane
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*Mercaptosilane
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