High-performance flame retardant polyethylene sheath material

A polyethylene sheath, flame-retardant technology, applied in the field of polyethylene insulation materials, can solve the problems of mechanical properties such as the decline of tensile strength and elongation at break, threats to life and property safety, slow extrusion speed, etc., to achieve excellent Softness and filler tolerance, solution to excessive brittleness, and the effect of reducing the amount of addition

Inactive Publication Date: 2019-06-04
SUZHOU HENGLI COMM MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Ordinary polyethylene sheath materials are flammable materials, which bring a lot of inconvenience to actual use, and even threaten the safety of people's lives and property. However, the flame-retardant polyethylene sheath materials on the market have poor flame retardancy, and the mechanical properties of polyethylene For example, the tensile strength and elongation at break drop seriously, and there are also problems such as poor fluidity, poor processability and slow extrusion speed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~4

[0034] Embodiments 1 to 4: A high-performance flame-retardant polyethylene sheath material, the polyethylene sheath material is composed of the following components by weight:

[0035] Table 1

[0036]

[0037] The powdered magnesium hydroxide is treated with organosilicon powder. The magnesium hydroxide is chemically synthesized and has a narrow particle size distribution, D50=1.5 μm, D97=5.0 μm.

Embodiment 1

[0038] The flame retardant synergist in Example 1 is a mixture formed by antimony trioxide and zinc borate in a weight ratio of 1:1; the flame retardant synergist in Example 2 is formed by zinc borate and 70# chlorinated paraffin in a weight ratio of 2:1 The mixture; the flame retardant synergist of embodiment 3 is the mixture that zinc borate, decabromodiphenylethane form according to weight 1:1; The flame retardant synergist of embodiment 4 is decabromodiphenylethane, organic Mongolia Desoiling is a mixture formed by weight 1:3.

[0039] The antioxidant of embodiment 1 is antioxidant 1010, the antioxidant of embodiment 2 is the mixture of antioxidant 168 and antioxidant 245 according to the weight 1:1, the antioxidant of embodiment 3 is antioxidant 168. Antioxidant 245 is a mixture formed by weight 1:1, and the antioxidant in Example 4 is a mixture formed by weight 1:1 of antioxidant 168 and antioxidant 1076;

[0040] The above-mentioned magnesium hydroxide has a mesh numbe...

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PUM

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Abstract

The invention discloses a high-performance flame retardant polyethylene sheath material. The polyethylene sheath material comprises, by weight, high density polyethylene, linear low density polyethylene, bimodal polyethylene, a polyolefin elastomer, an ethylene-vinyl acetate copolymer, maleic anhydride grafted polyethylene, powdery magnesium hydroxide, layered aluminum hydroxide, a flame retardantsynergist, magnesium stearate, silicone oil, an antioxidant, a melamine salt of cage phosphate, polyphenylether, silicone powder and a lubricant. The halogen-free efficient flame-retardant polyolefincable material has the advantages of reduction of the addition amounts of the magnesium hydroxide and aluminum hydroxide, great improvement of the flame retardant efficiency of the hydroxides, reduction of the influences of the addition of the flame retardant on mechanical properties, good tensile strength of 15 MPa, and excellent elongation at break.

Description

technical field [0001] The invention relates to a polyethylene insulating material, in particular to a high-performance flame-retardant polyethylene sheathing material. Background technique [0002] With the development of the economy, the places where cables need to be used have become diversified, and there are more stringent and diverse requirements for the performance indicators of cable sheath materials, such as insulation, tensile strength, service temperature, flame retardant performance and other indicators There are strict requirements, and the continuous improvement of the performance of the sheath material is an urgent need for economic and social development. Ordinary polyethylene sheath materials are generally composed of several polyethylene resins, antioxidants, lubricants and carbon black in a certain proportion, and then pelletized by twin-screw extrusion, with high tensile strength and elongation at break. Elongation, good extrusion fluidity, wide processi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L51/06C08L23/00C08K13/04C08K3/22C08K5/098C08K7/22
Inventor 黄常春程晓松李大政计瑶佳
Owner SUZHOU HENGLI COMM MATERIAL
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