MTQ silicon resin and preparation method thereof, fluorine-containing organic silicon rubber and preparation method and application thereof
A technology of silicone rubber and silicone resin, which is applied in the direction of coating, etc., can solve the problems of difficult synthesis, low strength, and poor hydrophobic and oleophobic properties of fluorine-containing silicone rubber, so as to improve mechanical properties, hydrophobic and oleophobic properties, and fully react , improve the effect of transparency
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preparation example 1
[0071] A preparation method of MTQ silicone resin, comprising the following steps:
[0072] S1 is 1:(0.2~1.2):(1.8~4.3):(0.2~0.6):(1~3 according to the mass ratio of end-capping agent, fluorocarbon-based siloxane, silicate, catalyst, solvent and extractant ): (1~3) Weigh the end-capping agent, catalyst, and solvent for later use; refer to Table 1 for the specific incorporation amount;
[0073] S2 Add the solvent into the round-bottomed flask, slowly add the catalyst under stirring; control the temperature at 25°C, add the capping agent into the round-bottomed flask, stir for 30min, and obtain the mixture A;
[0074] S3 Add the silicate ester to the above mixture A, slowly add it within a certain period of time, the addition time is 30 minutes, and the reaction temperature is 30°C to obtain the mixture B;
[0075] S4 Add fluorocarbon-based siloxane dropwise to mixture B, slowly add it within a certain period of time, the dropping time is 30 minutes, and the reaction temperatur...
preparation example 2-6
[0082] The difference between Preparation Examples 2-6 and Preparation Example 1 is that the prepared substances and their dosages are different, see Table 1 for details.
[0083] Table 1 Preparation substances and dosage of MTQ silicone resin
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preparation example 7-12
[0087] The difference between Preparation Examples 7-12 and Preparation Example 2 is that the prepared substances and their dosages are different, see Table 2 for details.
[0088] Table 2 Preparation substances and dosage of MTQ silicone resin
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