Ceramic silicon rubber and preparation method thereof
A technology for ceramicizing silicone rubber and silicone rubber, which is applied in the field of rubber and its preparation, can solve the problems of inability to maintain the integrity of products, no mechanical strength of burnt residues, dangerous secondary disasters, etc., so as to improve the reaction speed of preparation and reduce production. cost, cost reduction effect
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Embodiment 1
[0034] The preparation of flame-retardant ceramic silicone rubber comprises the following steps:
[0035] ①Knead 100 parts of silicone rubber, 30 parts of fumed silica, 2 parts of hydroxyl silicone oil, and 20 parts of hydroxide in a kneader;
[0036] ② Vacuumize the kneader, keep the vacuum at -0.1~-0.04Mpa, and keep the temperature at 130~200°C;
[0037] ③Add the metal nickel catalyst into the kneader and knead;
[0038] ④ Add 90 parts of vitrified powder into the kneader, so that the vitrified powder and the kneaded silicone rubber can be mixed evenly to form a group of vitrified rubber;
[0039] 5. Move the lumpy ceramic rubber out of the kneader and cool it;
[0040] ⑥Knead the cooled lump ceramic rubber on the mill, add 1.5 parts of vulcanizing agent and knead
[0041] A ceramicized rubber is formed.
[0042] The silicone rubber is methyl vinyl silicone rubber, the average molecular weight of raw rubber is 550,000-650,000, and the selected brand is domestic 110-2.
...
Embodiment 2
[0056] The preparation of flame-retardant ceramic silicone rubber comprises the following steps:
[0057] ①Knead 100 parts of silicone rubber, 35 parts of fumed silica, 3 parts of hydroxyl silicone oil and 30 parts of hydroxide in a kneader;
[0058] ② Vacuum the kneader, keep the vacuum at -0.1~-0.04Mpa, and keep the temperature at 130~200°C;
[0059] ③Add the metal nickel catalyst into the kneader and knead;
[0060] ④ Add 80 parts of vitrified powder into the kneader to knead the vitrified powder and the kneaded silicone rubber evenly to form a lump of vitrified rubber;
[0061] 5. Move the lumpy ceramic rubber out of the kneader and cool it;
[0062] ⑥Knead the cooled lump ceramic rubber on the open mill, add 2.0 parts of vulcanizing agent and start kneading
[0063] A ceramicized rubber is formed.
[0064]The silicone rubber is methyl vinyl silicone rubber, the average molecular weight of raw rubber is 550,000-650,000, and the selected brand is domestic 110-2.
[006...
Embodiment 3
[0078] The preparation method of flame-retardant ceramic silicon rubber comprises the following steps:
[0079] ①Knead 100 parts of silicone rubber, 30 parts of fumed silica, 2 parts of hydroxyl silicone oil, and 30 parts of hydroxide in a kneader;
[0080] ② Vacuumize the kneader, keep the vacuum at -0.1~-0.04Mpa, and keep the temperature at 130~200°C;
[0081] ③Add the metal nickel catalyst into the kneader and knead;
[0082] ④ Add 100 parts of vitrified powder treated with silane coupling agent into the kneader, so that the vitrified powder and the kneaded silicone rubber can be mixed evenly to form a group of vitrified rubber;
[0083] 5. Move the lumpy ceramic rubber out of the kneader and cool it;
[0084] ⑥Knead the cooled lump ceramic rubber on the mill, add 2 parts of vulcanizing agent and knead
[0085] A ceramicized rubber is formed.
[0086] The silicone rubber is methyl vinyl silicone rubber, the average molecular weight of raw rubber is 550,000-650,000, and ...
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