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Halogen-free environment-friendly high-flame-retardant thermochromic material and application thereof

A temperature-sensitive discoloration, high flame retardant technology, used in plastic/resin/wax insulators, organic insulators, insulators, etc., can solve the problems of scalding users, current overload or short circuit, no warning, etc., to achieve good mechanical properties, application Great prospect

Inactive Publication Date: 2018-09-04
SHENZHEN WOER HEAT SHRINKABLE MATERIAL +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the operation of electronic and electrical equipment, due to the aging of insulating materials or other external force damage, internal wires and cables or components may be partially overloaded or short-circuited, causing the temperature of the wire body or other important structural parts to be too high without warning. The overload of the wire circuit cannot be seen from the surface. If it is used for a long time under the bad state of current overload, there will be a hidden danger of scalding the user due to high temperature, and even causing a fire hazard.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The two-stage reversible temperature-sensing wire and cable material formula is as follows:

[0028] Ethylene-vinyl acetate copolymer (33% vinyl acetate): 28 parts;

[0029] Low-density polyethylene: 5 parts;

[0030] Styrene-butadiene-styrene block copolymer: 8 parts;

[0031] Maleic anhydride grafted linear low density polyethylene: 5 parts;

[0032] Flame retardant (15 parts of aluminum hydroxide, 15 parts of melamine cyanurate, 15 parts of zinc divinyl hypophosphite): 45 parts;

[0033] Color-changing powder (3 parts of reversible temperature-changing green pigment, 2 parts of yellow base color pigment): 5 parts;

[0034] Auxiliary (1 part antioxidant, 2 parts lubricant, 1 part crosslinking aid): 4 parts.

[0035] The preparation steps are as follows:

[0036] Mix according to the above formula ratio, then put it into the internal mixer for 15 minutes, then extrude and mix with the twin-screw extruder, and prepare the finished cable material through the extrude...

Embodiment 2

[0039] The formula composition of irreversible thermochromic wire and cable materials is as follows:

[0040] Ethylene-methyl acrylate copolymer: 20 parts;

[0041] Linear low density polyethylene: 8 parts;

[0042] Ethylene-octene copolymer: 5 parts;

[0043] Maleic anhydride grafted ethylene-octene copolymer: 4 parts;

[0044] Flame retardant (20 parts of magnesium hydroxide, 20 parts of melamine cyanurate, 10 parts of aluminum methyl ethyl hypophosphite): 50 parts;

[0045] Color-changing powder (3 parts of irreversible temperature-changing black pigment, 3 parts of yellow pigment): 6 parts;

[0046] Auxiliary (1 part of antioxidant, 2 parts of lubricant, 4 parts of crosslinking aid): 7 parts;

[0047] The preparation steps are as follows:

[0048] Mix according to the above formula ratio, then put it into the internal mixer for 15 minutes, then extrude and mix with the twin-screw extruder, and prepare the finished cable material through the extruder granulation produc...

Embodiment 3

[0051] Two-stage reversible and one-stage irreversible temperature-sensitive color-changing wire and cable material formula is as follows:

[0052] Ethylene-vinyl acetate copolymer (40% vinyl acetate content): 22 parts;

[0053] Linear low density polyethylene: 15 parts;

[0054] Ethylene-octene copolymer: 5 parts;

[0055] Maleic anhydride grafted ethylene-octene copolymer: 3 parts;

[0056] Flame retardant (35 parts of aluminum hydroxide, 5 parts of aluminum methyl ethyl hypophosphite): 40 parts;

[0057] Color-changing powder (3 parts of reversible temperature-changing red pigment, 1 part of irreversible temperature-changing black pigment, and 1 part of base color blue pigment): 5 parts;

[0058] Auxiliary (2 parts of antioxidant, 3 parts of lubricant, 5 parts of crosslinking aid): 10 parts;

[0059] The preparation steps are as follows:

[0060]Mix according to the above formula ratio, then put it into the internal mixer for 15 minutes, then extrude and mix with the t...

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PUM

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Abstract

The invention discloses a halogen-free environment-friendly high-flame-retardant thermochromic material and an application thereof. The thermochromic material comprises, by weight, 10 to 50 parts of ethylene and its copolymer, 5 to 30 parts of polyethylene / propylene, 5 to 40 parts of an elastomer, 3 to 10 parts of a compatibilizer, 30 to 70 parts of a flame retardant, 5 to 25 parts of color changing powder and 1 to 10 parts of an auxiliary agent. The invention also provides a method for producing a halogen-free environment-friendly high-flame-retardant thermochromic wire cable or heat shrinkable sleeve. The halogen-free environment-friendly high-flame-retardant thermochromic wire cable or heat shrinkable sleeve has environment-friendly characteristics of no halogen, no red phosphorus and no heavy metal bismuth, has the flame retardant grade reaching to the VW-1 level in the US UL standard, resists 105 or 125 DEG C, realizes the reversible thermochromic function at various temperatures,and can play the visual recognition function of operating temperature warning and over-temperature discoloration.

Description

technical field [0001] The invention relates to a halogen-free, environment-friendly, flame-retardant, temperature-sensitive and color-changing material in the field of electronic and electrical equipment and its application. Background technique [0002] The working principle of the reversible thermochromic pigment is: microcapsules are used to cover invisible pigments, color forming agents and temperature control agents. By selecting materials with temperature control factors of different colors, materials that change color in different temperature ranges can be produced. The color-changing pigments are colored at low temperature and colorless at high temperature. At present, the pigments on the market can provide color changes at -15~70°C. interval. The working mechanism of the irreversible thermochromic pigment is colorless at low temperature and colored at high temperature. At present, the temperature range of the temperature change temperature that the pigment produc...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08L51/00C08L51/06C08L53/02C08K5/5313C08K3/22C08K5/3492C08J3/24C08J3/28H01B3/44H01B17/58
CPCC08J3/246C08J3/28C08J2323/08C08J2423/06C08J2423/08C08J2423/12C08J2451/06C08K2003/2224C08K2003/2227C08L23/0853C08L23/0869C08L2201/02C08L2201/22C08L2203/202C08L2205/025C08L2205/035C08L2207/066H01B3/441H01B17/58C08L23/06C08L53/02C08L51/06C08K5/5313C08K3/22C08K5/34924C08L23/0815C08L53/025C08L51/003C08L23/12
Inventor 卜程程张强
Owner SHENZHEN WOER HEAT SHRINKABLE MATERIAL
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