Oil-resistant, cold-resistant, high-flame-retardant, low-smoke, halogen-free cable material and preparation method thereof
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A kind of cable material, high flame retardant technology, applied in the field of halogen-free flame retardant cable material and its preparation, can solve the problems of low temperature resistance and mechanical properties, not being well solved, etc.
Active Publication Date: 2016-08-03
上海至正新材料有限公司
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However, the oil resistance of EVA is related to the VA content. The higher the VA content, the better the oil resistance, and the low temperature resistance and mechanical properties will decrease accordingly.
[0005] Therefore, there are certain defects in the formula design and material selection of oil-resistant and cold-resistant cables, which have not been well resolved.
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preparation example Construction
[0054] The method for preparing the cable can adopt conventional techniques in this field.
[0055] Preparation
[0056] The third aspect of the present invention provides a method for preparing the oil-resistant, cold-resistant, high-flame retardant, low-smoke, and halogen-free cable material of the present invention. The preparation method includes the following steps:
[0057] Mix the low VA content ethylene-vinyl acetate copolymer (EVA), the high VA content ethylene-vinyl acetate copolymer (EVA), the compatibilizer, and the processing aid according to the stated ratio for 4 to 5 minutes, and discharge and place; The flame retardant, antioxidant, and lubricant are mixed according to the stated ratio for 8-10 minutes, and the material is discharged and placed; then the two parts of the mixed material and the coupling agent are extruded and granulated according to the ratio. The oil-resistant, cold-resistant, high-flame retardant, low-smoke, halogen-free cable material is obtained....
Embodiment 1
[0068] Table 1. Specific Examples
[0069]
[0070] The preparation method of the above invention includes the following process steps:
[0071] Mix ethylene-vinyl acetate copolymer (EVA) with VA content of 14%, ethylene-vinyl acetate copolymer (EVA) with VA content of 40%, compatibilizer, and processing aid according to the ratio in the examples for 4 to 5 minutes , Discharge and place; mix aluminum hydroxide, magnesium hydroxide, antioxidant 1010, antioxidant 168, zinc stearate, and polyethylene wax according to the ratio in the embodiment for 8-10 minutes, discharge and place; Part of the mixed material and silane coupling agent are extruded and granulated according to the ratio. The oil-resistant, cold-resistant, high-flame retardant, low-smoke, halogen-free cable material is obtained.
[0072] In addition, the temperature of each stage of the extruder starts from the feeding port and is 100~110℃, 110~115℃, 115~120℃, 120~125℃, 125~130℃, 130~135℃, 135~140℃ in sequence. , The te...
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Abstract
The invention provides an oil-resistant and cold-resistant LSOH (Low Smoke Zero Halogen) cable material with high fire retardancy. The cable material comprises the compounds in parts by weight: 80-85 parts of base resin, 15-20 parts of compatilizer, 120-150 parts of fire retardant, 0-18 parts of processing agent, 0-2 parts of antioxygen, 0-2 parts of lubricating agent and 1-3 parts of coupling agent. The base resin is formed through the combination of Ethylene-Vinyl-Acetate copolymers (EVA) with low VA (Vinyl-Acetate) content and Ethylene-Vinyl-Acetate copolymers (EVA) with high VA content in a weight compound ratio of (25-40): (45-60); the VA content of the Ethylene-Vinyl-Acetate copolymers (EVA) with low VA content is 14%-28% in the term of the total weight of the ethylene-vinyl-acetate copolymers with low VA content; the VA content of the Ethylene-Vinyl-Acetate copolymers (EVA) with high VA content is 35%-50% in the term of the ethylene-vinyl-acetate copolymers with high VA content. The cable material provided by the invention overcomes the disadvantages in the prior art, and the LSOH fire-retardant cable material is good in cold resistance and oil resistance, high in fire retardancy and excellent in mechanical property.
Description
Technical field [0001] The invention relates to a halogen-free flame-retardant cable material and a preparation method thereof, and more particularly to an oil-resistant, cold-resistant, high flame-retardant, low-smoke, halogen-free cable material and a preparation method thereof. Background technique [0002] With the rapid growth of wire and cable applications and rapid economic development, the requirements for the quality and performance of wire and cable materials in various fields are increasing, especially for the high temperature and low temperature resistance of cable materials, and the requirements for oil resistance. [0003] At present, oil-resistant cables have been widely used in my country's petroleum, chemical, marine engineering and rail transit fields. However, with the general demand for oil-resistant cables, accidents caused by poor oil resistance of cables are also on the rise every year. [0004] In the wire and cable industry, most of the polymers used to manuf...
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