A kind of epoxy-organosilicon resin and its preparation method and application
A silicone and resin technology, applied in the field of epoxy-silicone resin and its preparation, can solve the problems of improvement, no mention of mechanical properties, complicated preparation methods, etc., achieve good temperature resistance and weather resistance, and achieve large-scale Application, preparation method flexible effect
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Embodiment 1
[0091] The preparation method of epoxy-organosilicon resin, comprises the steps:
[0092] i. Add 100 parts of siloxane ring body I, 100 parts of MQ resin A containing vinyl with chemical structure as shown in formula (IV) in the reaction kettle; heat the reaction kettle to 75° C., add 1 part of trifluoromethane The sulfonic acid was subjected to an equilibrium reaction for 5 hours; 10 parts of sodium carbonate were added to the reaction kettle, and the stirring was continued for 1 hour; the obtained reaction solution was filtered to remove low volatiles to obtain vinyl-containing MDQ-Vi(I) resin.
[0093] ii, in the reaction kettle, add 100 parts of MDQ-Vi (I) resins containing vinyl and 200 parts of xylenes and mix with the gained of step i; The reaction kettle is cooled to 0 ℃, adds 10 parts of peracetic acid and carries out oxidation reaction; Keeping The reaction was carried out at 0 °C for 24 hours. After the reaction was completed, the resulting product was filtered and ...
Embodiment 2
[0097] The preparation method of epoxy-organosilicon resin, comprises the steps:
[0098] i. Add 200 parts of siloxane ring II and 100 parts of vinyl-containing MQ resin A with a chemical structure as shown in formula (IV) in the reaction kettle; heat the reaction kettle to 75° C., add 1 part of trifluoromethane The sulfonic acid was subjected to an equilibrium reaction for 6 hours; 10 parts of sodium carbonate were added to the reaction kettle, and the stirring was continued for 1 hour; the obtained reaction solution was filtered, and low volatiles were removed to obtain vinyl-containing MDQ-Vi(II) resin.
[0099] ii, in the reaction kettle, add 100 parts of MDQ-Vi (II) resins containing vinyl and 200 parts of xylenes and mix with the gained of step i; The reaction kettle is cooled to 0 ℃, and 10 parts of peracetic acid are added to carry out oxidation reaction; Keep The reaction was carried out at 0 °C for 20 h. After the reaction was completed, the obtained product was filter...
Embodiment 3
[0103] The preparation method of epoxy-organosilicon resin, comprises the steps:
[0104] i. Add 100 parts of siloxane ring II and 100 parts of vinyl-containing MQ resin B with chemical structure as shown in formula (V) in the reaction kettle; heat the reaction kettle to 75° C., add 1 part of trifluoromethane The sulfonic acid was subjected to an equilibrium reaction for 5 hours; 10 parts of sodium carbonate were added to the reaction kettle, and the stirring was continued for 1 hour; the obtained reaction solution was filtered to remove low volatiles to obtain vinyl-containing MDQ-Vi(III) resin.
[0105] ii, add 100 parts of step i gained MDQ-Vi (III) resins and 200 parts of xylenes containing vinyl in the reactor and mix; the reactor is cooled to 0 ℃, add 26 parts of peracetic acid and carry out oxidation reaction; keep The reaction was carried out at 5 °C for 24 h. After the reaction was completed, the obtained product was filtered and washed with water until neutral. After...
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Abstract
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