Oil-resistant and cold-resistant LSOH (Low Smoke Zero Halogen) cable material with high fire retardancy and preparation method thereof
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A high flame retardant, cable material technology, used in plastic/resin/wax insulators, organic insulators, etc., can solve problems such as not being well solved, low temperature resistance and mechanical properties.
Active Publication Date: 2015-01-07
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
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[0054] The preparation method of the cable can adopt conventional techniques in the art.
[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 ethylene-vinyl acetate copolymer (EVA) with low VA content, ethylene-vinyl acetate copolymer (EVA) with high VA content, compatibilizer, and processing aid according to the stated ratio for 4-5 minutes, discharge and place; Mix the flame retardant, antioxidant and lubricant according to the ratio for 8 to 10 minutes, discharge and place; then extrude and granulate the mixed material and coupling agent according to the ratio. The oil-resistant, cold-resistant, high-flame-retardant, low-smoke, halogen-free cable material is obtained.
[0058] In a specific embodiment of the present invention, the prep...
Embodiment 1
[0068] Table one, specific embodiment
[0069]
[0070] The preparation method of the above-mentioned invention, it comprises the following processing 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 for 4 to 5 minutes according to the ratio in the examples , discharge and place; aluminum hydroxide, magnesium hydroxide, antioxidant 1010, antioxidant 168, zinc stearate, polyethylene wax were mixed according to the ratio in the embodiment for 8-10min, discharge and place; then two Part of the mixed material and silane coupling agent are extruded and granulated according to the proportion. The oil-resistant, cold-resistant, high-flame-retardant, low-smoke, halogen-free cable material is obtained.
[0072] In addition, the temperature of each section of the extruder starting from the feeding port is 100-110°C, 110-115°C, 115-120°C, 120-125°C, 125...
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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, in particular 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 the requirements for high temperature and low temperature resistance and oil resistance of cable materials. [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 cable oil resistance are also on the rise every year. [0004] In the wire and cable industry, polyolefin materials are mostly used in the ma...
Claims
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