High-temperature-resistant organic silicon-modified epoxy resin and method for preparing same
A technology of epoxy resin and silicone, which is applied in the field of high-temperature-resistant silicone-modified epoxy resin and its preparation, can solve the problems of poor compatibility and long reaction time, and achieve good storage stability, fast response, good storage stability
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[0029] Example 1
[0030] Take 10g of organic silicon intermediate Dow Corning RSN-6018, 15g of epoxy resin E20, 25g of cyclohexanone and butyl acetate mixture, and add them to a clean 500ml four-necked flask in turn, stir slowly and heat up to 75℃, wait for it After mixing uniformly, add 0.05 g of zinc naphthenate, then heat to 125° C., react for 4.5 hours, and continuously separate the water generated during the reaction, and lower the temperature to obtain the silicone modified epoxy resin.
[0031] Technical indicators of the products obtained:
[0032] Initial decomposition temperature: 320℃;
[0033] Hardness: 5H;
[0034] Adhesion: First level.
Example Embodiment
[0035] Example 2
[0036] Take 10g of organic silicon intermediate Dow Corning RSN-6018, 30g of epoxy resin E20, 40g of cyclohexanone and butyl acetate mixture, and add them to a clean 500ml four-necked flask in turn, stir slowly and heat to 75℃, wait for it After mixing uniformly, add 0.1 g of zinc naphthenate, then heat to 145° C., react for 5.5 hours, and continuously separate the water generated during the reaction, and lower the temperature to obtain the silicone modified epoxy resin.
[0037] Technical indicators of the products obtained:
[0038] Initial decomposition temperature: 280℃;
[0039] Hardness: 5H;
[0040] Adhesion: First level.
Example Embodiment
[0041] Example 3
[0042] Take 10g of silicone intermediate Dow Corning RSN-6018, 45g of epoxy resin E20, 55g of cyclohexanone and butyl acetate mixture, and then add them to a clean 500ml four-necked flask, stir slowly and heat to 75℃, wait for it After mixing uniformly, add 0.13 g of zinc naphthenate, then heat to 155° C., react for 6 hours, and continuously separate the water generated during the reaction, and lower the temperature to obtain the silicone modified epoxy resin.
[0043] Technical indicators of the products obtained:
[0044] Initial decomposition temperature: 240℃;
[0045] Hardness 4H;
[0046] Adhesion: 0 level.
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