Irradiation crosslinked low-smoke halogen-free flame-retardant ethylene-propylene rubber elastomer material and preparation method thereof
A technology of ethylene propylene rubber and irradiation, applied in the direction of rubber insulators, conductors, insulated conductors, etc., can solve the problems of secondary fire hazards, a lot of smoke, toxicity, etc., and achieve good flame retardancy, uniform cross-linking points, and cross-linking. high density effect
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Embodiment 1
[0032] First choose the base rubber A of 65 parts by weight, the base rubber B of 35 parts by weight, the aluminum hydroxide of 65 parts by weight, the magnesium hydroxide of 80 parts by weight, the 3.5 water zinc borates of 12 parts by weight, the talcum powder of 10 parts by weight, 5 parts by weight of stearic acid, 1 part by weight of antioxidant and 0.9 parts by weight of crosslinking agent.
[0033] Then, put base rubber A, base rubber B, aluminum hydroxide, magnesium hydroxide, zinc borate 3.5 hydrate, talcum powder, zinc stearate, antioxidant and cross-linking agent into the closed mixing at a temperature of 120°C In the machine, knead for 10 minutes to obtain a lump material.
[0034] Afterwards, the lump material was put into an open rubber mixing machine with a temperature of 80° C., and rolled into a sheet-like material with a thickness of 2 mm.
[0035] Afterwards, the flake material was cut into square particles with a flat granulator.
[0036] Finally, the squ...
Embodiment 2
[0043] First choose the base rubber A of 70 parts by weight, the base rubber B of 30 parts by weight, the aluminum hydroxide of 75 parts by weight, the magnesium hydroxide of 70 parts by weight, the 3.5 water zinc borates of 16 parts by weight, the talcum powder of 15 parts by weight, 7 parts by weight of stearic acid, 1.2 parts by weight of antioxidant and 1.2 parts by weight of crosslinking agent.
[0044] Then, put base rubber A, base rubber B, aluminum hydroxide, magnesium hydroxide, zinc borate 3.5 hydrate, talcum powder, zinc stearate, antioxidant and cross-linking agent into the closed mixing at a temperature of 125°C machine, kneading for 11 minutes to obtain a doughy material.
[0045] Afterwards, the lump material was put into an open rubber mixer at a temperature of 90° C., and rolled into a sheet-like material with a thickness of 2.5 mm.
[0046] Afterwards, the flake material was cut into square particles with a flat granulator.
[0047] Finally, the square part...
Embodiment 3
[0054] First choose the base rubber A of 75 parts by weight, the base rubber B of 25 parts by weight, the aluminum hydroxide of 85 parts by weight, the magnesium hydroxide of 60 parts by weight, the 3.5 water zinc borates of 20 parts by weight, the talcum powder of 20 parts by weight, 8 parts by weight of stearic acid, 1.6 parts by weight of antioxidant and 1.5 parts by weight of crosslinking agent.
[0055] Then, put base rubber A, base rubber B, aluminum hydroxide, magnesium hydroxide, zinc borate 3.5 hydrate, talcum powder, zinc stearate, antioxidant and crosslinking agent into the closed mixing at a temperature of 130°C In the machine, knead for 12 minutes to obtain a lump material.
[0056] Afterwards, the lump material was put into an open rubber mixer at a temperature of 100° C., and rolled into a sheet-like material with a thickness of 3 mm.
[0057] Afterwards, the flake material was cut into square particles with a flat granulator.
[0058] Finally, the square partic...
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