Modified calcium carbonate and application thereof to preparation of silicon rubber
A technology of calcium carbonate and silicone rubber, which is applied in dyeing organosilicon compound treatment, fibrous filler, dyeing physical treatment, etc., can solve the problem that the comprehensive performance cannot meet the application purpose, achieve strong impact resistance, improve compatibility, The effect of improving the interface adhesion
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Embodiment 1
[0034] A silicone rubber, comprising the following raw materials in parts by weight: 100 parts of α, ω-dihydroxy polydimethylsiloxane, 30 parts of methyl vinyl silicone rubber, 15 parts of ethylene acrylic acid copolymer, 70 parts of modified calcium carbonate 4 parts, 4 parts of aramid fiber, 15 parts of white carbon black, 4 parts of silicon nitride fiber, 3 parts of chitosan, 5 parts of crosslinking agent, 2.5 parts of stabilizer, 3 parts of silane coupling agent, 2 parts of catalyst, processing 4 parts of additives and 1.2 parts of 1010 antioxidant.
[0035] Described calcium carbonate obtains through following steps modification:
[0036] (1) Add limestone to the crusher for crushing, and crush until the particle size is ≤0.40mm to obtain coarse calcium carbonate powder;
[0037] (2) Add calcium carbonate coarse powder to the grinder, and then add a surface treatment agent composed of pentaerythritol palmitate and polysiloxane sodium succinic acid amide sulfonate at a we...
Embodiment 2
[0046] A silicone rubber, comprising the following raw materials in parts by weight: 100 parts of α, ω-dihydroxy polydimethylsiloxane, 20 parts of methyl vinyl silicone rubber, 12 parts of ethylene acrylic acid copolymer, 60 parts of modified calcium carbonate 3 parts, 3 parts of aramid fiber, 12 parts of white carbon black, 3 parts of silicon nitride fiber, 4 parts of chitosan, 5 parts of crosslinking agent, 1.5 parts of stabilizer, 2 parts of rare earth coupling agent, 2.5 parts of catalyst, processing 5 parts of additives and 1 part of 1010 antioxidant.
[0047] Described calcium carbonate obtains through following steps modification:
[0048] (1) Add limestone to the crusher for crushing, and crush until the particle size is ≤0.40mm to obtain coarse calcium carbonate powder;
[0049] (2) Add coarse calcium carbonate powder into the grinder, and then add a surface treatment agent composed of pentaerythritol palmitate and polysiloxane sodium succinic acid amide sulfonate at...
Embodiment 3
[0058] A silicone rubber, comprising the following raw materials in parts by weight: 100 parts of α, ω-dihydroxy polydimethylsiloxane, 40 parts of methyl vinyl silicone rubber, 12 parts of ethylene acrylic acid copolymer, 70 parts of modified calcium carbonate 5 parts, 5 parts of aramid fiber, 18 parts of white carbon black, 5 parts of silicon nitride fiber, 2 parts of chitosan, 6 parts of crosslinking agent, 2.5 parts of stabilizer, 3.5 parts of aluminum-zirconium methacrylate coupling agent, 1 part of catalyst, 4 parts of processing aid and 1.5 parts of 1076 antioxidant.
[0059] Described calcium carbonate obtains through following steps modification:
[0060] (1) Add limestone to the crusher for crushing, and crush until the particle size is ≤0.40mm to obtain coarse calcium carbonate powder;
[0061] (2) Add calcium carbonate coarse powder to the grinder, and then add a surface treatment agent composed of pentaerythritol palmitate and polysiloxane sodium succinic acid ami...
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