Environmentally friendly and high flame-retardant polyvinyl chloride insulating material for high-frequency communication cables and preparation method thereof

A communication cable, polyvinyl chloride technology, applied in the direction of organic insulators, plastic/resin/wax insulators, etc., can solve the problems of high dielectric constant, signal distortion, inability to use long-distance high-frequency communication cables, etc., to achieve low dielectric Effects of constant, low corrosion, good volume resistivity

Active Publication Date: 2017-06-20
NANJING ZHONGCHAO NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of this application is to provide an environmentally friendly and highly flame-retardant polyvinyl chloride insulating material for high-frequency communication cables and its preparation method. The problem of high-frequency communication cables, while meeting the requirements of flame retardancy and environmental protection

Method used

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  • Environmentally friendly and high flame-retardant polyvinyl chloride insulating material for high-frequency communication cables and preparation method thereof
  • Environmentally friendly and high flame-retardant polyvinyl chloride insulating material for high-frequency communication cables and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] (1) Weigh as described in Table 1, where:

[0039] The plasticizer is dioctyl phthalate, the auxiliary plasticizer is dioctyl sebacate, and the polymer modifier is 10 parts of ethylene-n-butyl acrylate-carbonyl copolymer and 5 parts of ethylene-vinyl acetate- Carbonyl copolymer, the antioxidant is 0.15 parts of 4,4'-thiobis(6-tert-butyl-m-cresol) and 0.05 parts of tetrakis[β-(3.5-di-tert-butyl-4-hydroxyphenyl ) propionic acid] pentaerythritol ester, the inorganic flame retardant is 12 parts of aluminum hydroxide and 3 parts of magnesium hydroxide, and the inorganic filler is selected from 5 parts of clay and 5 parts of hydrotalcite.

[0040] (2) Mix the above plasticizer and polyvinyl chloride resin QS1000F in a kneader at room temperature for 5 minutes at a speed of 300r / min, then add ethylene-octene copolymer, polymer modifier, ethylene-vinyl acetate copolymer The mixture of compound and linear low density polyethylene, antioxidant and co-plasticizer were mixed in a ...

Embodiment 2

[0043] Weigh as described in Table 1, wherein:

[0044] The plasticizer is 7 parts of dioctyl phthalate and 3 parts of diisodecyl phthalate, the auxiliary plasticizer is trioctyl trimellitate, and the polymer modifier is 20 parts of ethylene-vinyl acetate -Carbonyl copolymer and 10 parts of ethylene-n-butyl acrylate-glycidyl ester copolymer are used together, and the antioxidant is tetrakis[β-(3.5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, inorganic The flame retardant is aluminum hydroxide, and the inorganic filler is 2 parts of clay.

[0045] Using the same preparation method as in Example 1, polyvinyl chloride insulating material was obtained by kneading and twin-screw melt mixing.

Embodiment 3

[0047] Weigh as described in Table 1, wherein:

[0048] The plasticizer is 10 parts of dioctyl phthalate and 5 parts of diisononyl phthalate, the auxiliary plasticizer is dioctyl sebacate, and the polymer modifier is 8 parts of ethylene-acrylic acid n-butyl Ester-carbonyl copolymer and 12 parts of ethylene-n-butyl acrylate-glycidyl ester copolymer are used together, and the antioxidant is 0.3 part of tris[2.4-di-tert-butylphenyl] phosphite and 0.2 part of thiodipropionic acid Dilauryl ester, 5 parts of magnesium hydroxide as the inorganic flame retardant, 12 parts of clay and 8 parts of hydrotalcite as the inorganic filler.

[0049] Using the same preparation method as in Example 1, polyvinyl chloride insulating material was obtained by kneading and twin-screw melt mixing.

[0050] The following table 2 is the performance test situation of the polyvinyl chloride insulating material of Examples 1-3.

[0051] Table 2 Performance comparison of PVC insulating materials

[0052]...

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Abstract

The invention discloses an environment friendly high flame-retardant polyvinyl chloride insulation material for a high frequency communication cable and a preparation method of the environment friendly high flame-retardant polyvinyl chloride insulation material. The environment friendly high flame-retardant polyvinyl chloride insulation material is prepared from the following raw material components: 80 to 100 parts of polyvinyl chloride resin, 5 to 15 parts of plasticizer, 5 to 10 parts of secondary plasticizer, 2 to 5 parts of antimony trioxide, 15 to 30 parts of polymer modifier, 0. 2 to 0.5 part of antioxidant, 8 to 10 parts of elastomer, 2 to 4 parts of polyolefin, 5 to 20 parts of inorganic flame retardant and 0.01 to 20 parts of inorganic filler; the raw materials are weighed according to respective parts by mass, and then are subject to kneading, fully melt-mixing by a double screw, and extruding for pelleting, so as to obtain the environment friendly high flame-retardant polyvinyl chloride insulation material. The polyvinyl chloride insulation material is very low in dielectric constant, good in volume resistivity and lower in impact brittleness temperature, is high in flame retardant property, and is widely used as an insulating layer of a communication cable and a power cable, and the flame-retardant polyvinyl chloride can be applied to the high frequency communication field.

Description

technical field [0001] The application relates to a wire and cable material and a preparation method thereof, in particular to an environment-friendly and highly flame-retardant polyvinyl chloride insulating material for high-frequency communication cables and a preparation method thereof. Background technique [0002] Due to its excellent adaptability, chemical and oil resistance, polyvinyl chloride is widely used in wires and cables; but compared with high-density polyvinyl chloride, its disadvantage is that the high dielectric constant causes signal distortion. Therefore, due to the poor dielectric properties of PVC materials, they cannot be used for long-distance high-frequency communication cables. [0003] As people's awareness of cable fire accidents increases year by year, the flame retardancy of cables has received widespread attention. The burning cables in the fire produce a lot of smoke and release toxic and corrosive gases, which seriously endanger personal saf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L23/08C08K13/02C08K5/12C08K3/22C08K3/34C08K3/26C08K5/11H01B3/44B29C47/92B29C48/92
Inventor 刘志刚陈友福李秀峰杨培杰
Owner NANJING ZHONGCHAO NEW MATERIALS
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