Inorganic modified high heat-resistant low-shrinkage low-smoke halogen-free flame retardant polyolefin cable material and preparation method thereof
A polyolefin cable material and inorganic modification technology, which is applied in the field of cable materials, can solve the problems of insufficient heat shrinkage, limited application occasions, large heat shrinkage, etc., to improve high temperature resistance and shrinkage resistance, and improve heat resistance Aging performance, the effect of improving heat shrinkage performance
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Embodiment 1
[0017] This example is an inorganic modified high heat resistance low shrinkage low smoke halogen free flame retardant polyolefin cable material:
[0018] (1) The raw material formula is as follows:
[0019]
[0020] (2) Preparation process:
[0021] The matrix resin, aluminum hydroxide, inorganic montmorillonite, polymer silicone, and antioxidant 1010 made by mixing 70% EVA and 30% metallocene PE were mixed at high speed according to the mass fraction in the table After the machine is fully mixed, it is internally kneaded by an internal mixer at a processing temperature range of 110°C-130°C, fed by a cone-double feeder, extruded by a co-rotating twin-screw extruder, formed by a single screw, and then ground Pelletizing by a hot cutting machine, transported and cooled by a cyclone separator, and screened by a vibrating sieve, and finally made into an inorganic modified high heat-resistant, low shrinkage, low-smoke, halogen-free, flame-retardant polyolefin cable material. ...
Embodiment 2
[0025] This example is an inorganic modified high heat resistance low shrinkage low smoke halogen free flame retardant polyolefin cable material:
[0026] (1) The raw material formula is as follows:
[0027]
[0028] (2) Preparation process:
[0029] The matrix resin, aluminum hydroxide, inorganic montmorillonite, magnesium stearate, and antioxidant 1010 made by mixing 70% EVA and 30% metallocene PE were mixed at high speed according to the mass fraction in the table After the machine is fully mixed, it is internally kneaded by an internal mixer at a processing temperature range of 110°C-130°C, fed by a cone-double feeder, extruded by a co-rotating twin-screw extruder, formed by a single screw, and then ground Pelletizing by a hot cutting machine, transported and cooled by a cyclone separator, and screened by a vibrating sieve, and finally made into an inorganic modified high heat-resistant, low shrinkage, low-smoke, halogen-free, flame-retardant polyolefin cable material....
Embodiment 3
[0033] This example is an inorganic modified high heat resistance low shrinkage low smoke halogen free flame retardant polyolefin cable material:
[0034] (1) The raw material formula is as follows:
[0035]
[0036] (2) Preparation process:
[0037] The matrix resin, aluminum hydroxide, inorganic montmorillonite, silicone powder, and antioxidant 1010 made by mixing 70% EVA and 30% metallocene PE were mixed in a high-speed mixer according to the mass fraction in the table. After fully mixing, in the processing temperature range of 110°C-130°C, it is internally kneaded by an internal mixer, fed by a cone-double feeder, extruded by a co-rotating twin-screw extruder, formed by a single screw, and then heated by grinding. Machine pelletizing, cyclone conveying and cooling, vibrating screen screening, and finally made into inorganic modified high heat resistance, low shrinkage, low smoke, halogen-free flame retardant polyolefin cable material.
[0038] The finished product p...
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