11-08-2023 дата публикации
Номер: CN116574378A
Принадлежит:
The invention discloses ablation-resistant efficient heat-insulating room-temperature vulcanized silicone rubber foam and a preparation method thereof. The preparation method comprises the following steps: firstly, putting hydroxyl-terminated polydimethylsiloxane, vinyl-terminated polydimethylsiloxane, a catalyst, an inhibitor, a ceramizable emulsion foaming agent, a functional ceramic filler and a heat-resistant additive into a planetary stirring kettle, and stirring to obtain base rubber A; then putting hydroxyl-terminated polydimethylsiloxane, vinyl-terminated polydimethylsiloxane, hydrogen-containing silicone oil, functionalized low-melting-point glass powder and functionalized hexagonal boron nitride into a planetary stirring kettle, and stirring to obtain a base adhesive B; and finally, transferring the base rubber B into the base rubber A, vulcanizing, and then putting into a drying oven for second-stage vulcanization to obtain a final product. The filling material is low in adding ...
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