A kind of manufacture method of flame retardant rubber
A technology of flame retardant rubber and a manufacturing method, applied in the field of rubber manufacturing, can solve the problems of poor cold resistance, poor ductility, and low service life, and achieve the effects of improving modification effect, broad application prospect and prolonging service life.
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Embodiment 1
[0022] A kind of manufacture method of flame retardant rubber, its processing step is as follows:
[0023] (1) Mastication: Take 80g of neoprene raw powder and 20g of nitrile rubber raw powder for plastication to improve its plasticity, and the addition of acetonitrile rubber increases the ductility;
[0024] (2) Mixing: Add 30g of carbon black, 10g of short fiber, 1g of stearic acid, 10-15g of nano-flame retardant compound, 1.5g of anti-aging agent to the plasticized butadiene rubber raw powder and nitrile rubber raw powder and accelerator DM43.5~4.5g in the kneading machine, the mixing and kneading conditions are 8MPa, 150~190°C, 20min; the preparation method of the nano-flame retardant compound is:
[0025] (a) The silicon hydroxyapatite, red phosphorus, attapulgite, hydrotalcite, montmorillonite, titanium dioxide, calcite, kaolin according to 25-35: 15-20: 10-15: 10-15: 8-10: 8-10: 7-8: 5-7 parts by mass, mixed, added to a mixed solution of 200 parts of dimethyl sulfoxide...
Embodiment 2
[0037] Example 2: The rest is the same as in Example 1, except that in step (2), the mixing condition is 8MPa, 100°C, 1h, but at such a temperature, prolonged time cannot enhance mixing As a result, the obtained mixed rubber is easy to crack.
Embodiment 3
[0038] Embodiment 3: the rest is the same as the above-mentioned embodiment 1, the difference is that in step (5), the thickness of the isocyanate glue is thinner, which is the same as the thickness of pregelatinization, and the polyurethane film is easy to fall off.
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