Production process of high-temperature-resistant flame-retarding cable material
A flame-retardant cable material and production process technology, which is applied in the direction of plastic/resin/wax insulators, organic insulators, etc., can solve the problems of frost cracking and damage of cable protective sleeves, insufficient supply of manufacturers, and high production costs of cables, so as to achieve production costs. control, good insulation and protection, and the effect of improving efficiency
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Embodiment 1
[0023] (1) Preparation of matrix resin: 30 parts of polypropylene resin, 20 parts of polyurethane resin, 10 parts of polystyrene resin, 3 parts of calcium-zinc composite heat stabilizer and 8 parts of methyl acrylate monomer were polymerized according to the number of parts by mass. The maleic anhydride graft used was put into a mixer and stirred evenly, and then sent to an extruder at 140° C. for blending and extrusion to obtain a matrix resin extrudate for use.
[0024] (2) Rubber modification: Weigh 25 parts of the mixture of ethylene propylene rubber and nitrile rubber, 4 parts of calcium stearate, 5 parts of tetraerythritol ester, and 15 parts of ammonium polyphosphate, put them into a high-speed kneader, and then put them into the matrix Resin extruded material, heated for low-speed mixing, the speed of low-speed mixing is 700r / min, the temperature of the kneader is controlled at 120°C, and 15 parts of plasticizer dioctyl phthalate are added in two times at the same time....
Embodiment 2
[0027] (1) Preparation of matrix resin: 40 parts of polypropylene resin, 30 parts of polyurethane resin, 15 parts of polystyrene resin, and 5 parts of organotin heat stabilizer and 10 parts of butene monomer are used in the polymerization reaction according to the mass parts The maleic anhydride grafts were put into a mixer and stirred evenly, and then fed into an extruder at 160° C. for blending and extrusion to obtain matrix resin extrudates for later use.
[0028] (2) Rubber modification: Weigh 20 parts of neoprene rubber, 2 parts of zinc stearate, 5 parts of dilauryl thiodipropionate, and 12 parts of magnesium hydroxide, put them into a high-speed kneader, and then put them into the matrix resin to extrude Discharge, heat and mix at low speed. The speed of low-speed mixing is 900r / min. The temperature of the kneader is controlled at 130°C. At the same time, add 20 parts of plasticizer dioctyl phthalate in two times, and wait until the plasticizer is completely added. Final...
Embodiment 3
[0031] (1) Matrix resin preparation: 35 parts of polypropylene resin, 25 parts of polyurethane resin, 12 parts of polystyrene resin, and 4 parts of calcium-zinc composite heat stabilizer and 9 parts of propylene monomer polymerization reaction are used according to the mass parts The maleic anhydride graft is put into a mixer and stirred evenly, and then sent to an extruder at 150° C. for blending and extrusion to obtain a matrix resin extrusion material for later use.
[0032] (2) Rubber modification: take by weighing 23 parts of NBR, 3 parts of magnesium stearate, 4 parts of tetraerythritol esters, 13 parts of aluminum hydroxide, put them into a high-speed kneader, then drop into matrix resin extrusion material, Heat and mix at low speed. The speed of low-speed mixing is 800r / min. The temperature of the kneader is controlled at 125°C. At the same time, 17 parts of plasticizer dioctyl phthalate are added in two times. After the plasticizer is completely added, reduce Kneader ...
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