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A moisture-proof low-smoke halogen-free flame-retardant building wire and cable insulating material

A wire and cable and insulating material technology, which is applied to rubber insulators, organic insulators, plastic/resin/wax insulators, etc., can solve the problems of inorganic hydroxide flame retardants that are easy to absorb water, hidden dangers of safe use of electricity, and not moisture-proof, etc., to achieve Eliminate potential safety hazards, avoid short-circuit accidents, and reduce the amount of smoke

Active Publication Date: 2016-04-13
SHENZHEN WOER HEAT SHRINKABLE MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in reality, it is often not noticed that inorganic hydroxide flame retardants are easy to absorb water and are not moisture-proof. Extensive use of such flame retardants will lead to short circuits when the wires are running in a high-temperature and humid environment, and there is a major safety hazard in electricity use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 100 parts by weight of ethylene-vinyl acetate copolymer (EVA), 16 parts of maleic anhydride copolymer modified ethylene-vinyl acetate copolymer, 5 parts of low-density linear polyethylene, 120 parts of magnesium hydroxide flame retardant , 80 parts of aluminum hydroxide flame retardant, 2 parts of antioxidant 1010, 3 parts of zinc stearate, 3 parts of vinyl silicone oil, mixed evenly at a temperature of 100 ° C ~ 170 ° C and extruded to form a moisture-proof low-smoke Halogen flame-retardant wire material; and then obtain moisture-proof low-smoke halogen-free flame-retardant wire through steps such as threading.

[0024] The above-mentioned electric wires were measured, and the results are as follows: the flame retardant grade conforms to the single vertical burning and B-type bundled burning standards in GB / T18380; the tensile strength is 13.5MPa, the elongation at break is 268%, and the rest of the physical properties and electrical All meet the requirements of JB / T10...

Embodiment 2

[0026] By weight, 100 parts of ethylene-vinyl acetate copolymer (EVA), 18 parts of maleic anhydride copolymer modified ethylene-vinyl acetate copolymer, 8 parts of metallocene polyethylene, 100 parts of magnesium hydroxide flame retardant, 120 parts of aluminum hydroxide flame retardant, 2 parts of antioxidant 1010, 3 parts of zinc stearate, 4 parts of silicone, mixed evenly at 100°C to 170°C and extruded to form a moisture-proof low-smoke and halogen-free resistor Fuel wire materials; and then obtain moisture-proof low-smoke halogen-free flame-retardant wires through steps such as beading.

[0027] The above-mentioned electric wires were tested, and the results are as follows: the flame retardant grade conforms to the single vertical burning and B-type bundled burning standards in GB / T18380; the tensile strength is 12.8MPa, the elongation at break is ≥281%, and the remaining physical properties and electrical All meet the requirements of JB / T10491. Environmental performance ...

Embodiment 3

[0029] By weight, 100 parts of ethylene-vinyl acetate copolymer (EVA), 5 parts of EPDM rubber, 18 parts of maleic anhydride copolymer modified ethylene-vinyl acetate copolymer, 5 parts of low-density linear polyethylene, 100 parts of magnesium hydroxide flame retardant, 120 parts of aluminum hydroxide flame retardant, 1.5 parts of antioxidant 1010, 0.5 parts of antioxidant 168, 3 parts of zinc stearate, 2 parts of silicone, at a temperature of 100 ° C to 170 ° C Mix evenly at the bottom and extrude to form a moisture-proof low-smoke, halogen-free, flame-retardant wire material;

[0030] The above-mentioned electric wires were measured, and the results are as follows: the flame retardant grade conforms to the single vertical burning and B-type bundled burning standards in GB / T18380; the tensile strength is 13.1MPa, the elongation at break is ≥264%, and the remaining physical properties and electrical All meet the requirements of JB / T10491. Environmental performance complies wi...

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Abstract

The invention discloses a moistureproof type low-smoke halogen-free flame-retarding wire and cable insulation material used for building. The insulation material comprises components, by weight, 100 parts of vinyl copolymer and / or ethylene propylene rubber, 100-250 parts of halogen-free flame retardants, 1-20 parts of compatilizer, 0.3-5 parts of antioxygen, 0.5-5 parts of lubricants, 0-3 parts of coupling reagents, 0-2 parts of dispersing agents, and 2-20 parts of one or more of vinyl silicone oil, silicone, silicone grease, silicone rubber, and mineral oil. Wires made of the material is low in smoke, free of halogen, incapable of releasing poisonous gas. Flames can be retarded due to the fact that a single stick of wire can vertically combust at combusting time. Moreover, some special addition agents are added in materials of insulation layers or protective sleeve layers, so that the surface hydrophobic property of products is increased and can be used in a high-temperature humid environment for a long time, and short circuit accidents caused by moisture absorption of the wire insulation layers are avoided.

Description

technical field [0001] The invention relates to a low-smoke, halogen-free, flame-retardant building wire, in particular to a moisture-proof low-smoke, halogen-free, flame-retardant building wire insulating material. Background technique [0002] At present, the vast majority of low-smoke halogen-free flame-retardant wire and cable materials use magnesium hydroxide and aluminum hydroxide as flame retardants; because products using such flame retardants do not produce toxic smoke when burned, and the price is low , so it is favored by various manufacturers. However, in reality, it is often not noticed that inorganic hydroxide flame retardants are easy to absorb water and are not moisture-proof. Extensive use of such flame retardants will lead to short circuits when the wires are running in a high-temperature and humid environment, and there is a major safety hazard in electricity use. . There is an urgent need to develop a low-cost, good flame-retardant effect, and moisture-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/16C08L83/07C08L83/04H01B3/44H01B3/28C08K13/02C08K5/01
Inventor 张强周和平康树峰胡平卜程程胡军
Owner SHENZHEN WOER HEAT SHRINKABLE MATERIAL
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