High-elongation two-component silicone structural adhesive and preparation method thereof
A high elongation, two-component technology, used in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problems of bonding and sealing, and the inability to use super high-rise glass building curtain wall structures.
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[0041] The embodiment of the present invention also provides a method for preparing the above-mentioned high elongation two-component silicone structural adhesive, comprising the following steps:
[0042] Component A and Component B are prepared. The order of preparing Component A and Component B is not limited. Component A can be prepared first, Component B can also be prepared first, and Component A and Component B can also be prepared at the same time;
[0043] The preparation process of component A is as follows:
[0044] In parts by mass, the ratio of 40-100 parts of base polymer, 40-80 parts of nano calcium carbonate, 0.5-2 parts of ultraviolet absorber, and 5-10 parts of polydimethylsiloxane is input into twin-screw extrusion Machine control system, electronic measurement of feeding amount, feeding, production by twin-screw extruder, control vacuum degree in the production process to be -0.07 ~ -0.09MPa, material temperature 80 ℃ ~ 100 ℃, to obtain A component;
[0045...
Example Embodiment
[0064] Example 1:
[0065] The high-elongation two-component silicone structural adhesive provided in this embodiment includes component A and component B. In parts by mass, component A includes 90 parts of α,ω-dihydroxy polydimethylsiloxane Alkane, 50 parts of nano calcium carbonate, 1 part of benzotriazole UV stabilizer, 5 parts of polydimethylsiloxane; component B includes 50 parts of color paste, 10 parts of methyldimethoxysilyl poly Propylene oxide ether, 0.5 parts of p-toluenesulfonyl isocyanate, 40 parts of methyltriethoxysilane, 30 parts of γ-aminopropyltriethoxysilane, 10 parts of mercaptopropyltrimethoxysilane, 0.2 parts of dibutyl Tin dilaurate, wherein the color paste includes: 100 parts of polydimethylsiloxane, 50 parts of high-structure carbon black, and 5 parts of fumed silica; components A and B are mixed in a mass ratio of 9:1.
[0066] The preparation method of the above-mentioned high elongation two-component silicone structural adhesive comprises the follo...
Example Embodiment
[0070] Example 2:
[0071] The high-elongation two-component silicone structural adhesive provided in this example includes component A and component B. In parts by mass, component A includes 100 parts of α,ω-dihydroxy polydimethylsiloxane Alkane, 80 parts of nano calcium carbonate, 2 parts of benzotriazole UV stabilizer, 10 parts of polydimethylsiloxane; component B includes 100 parts of color paste, 23 parts of trimethoxysilyl polyoxypropylene ether , 0.7 parts of vinyltrimethoxysilane, 80 parts of methyltrimethoxysilane, 30 parts of γ-aminopropyltriethoxysilane, 20 parts of γ-(2,3-glycidoxy)propyltrimethylsilane Oxysilane, 3 parts of dioctyl tin dilaurate, the color paste includes: 100 parts of polydimethylsiloxane, 50 parts of high-structure carbon black, 5 parts of fumed silica; components A and B Mix in a mass ratio of 13:1.
[0072] The preparation method of the above-mentioned high elongation two-component silicone structural adhesive comprises the following steps: ...
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