High-temperature-resistant soft thermoplastic low-smoke halogen-free flame-retardant polyolefin cable material

A polyolefin cable material, thermoplastic technology, applied in the direction of plastic/resin/wax insulators, circuits, electrical components, etc., can solve the problem that the cable is difficult to pass the winding test and low temperature tensile test, and the material is difficult to meet the change rate of mechanical properties Requirements, intolerance to precipitation and migration resistance, etc., to achieve excellent carburization effect, lower hardness, and good softness

Active Publication Date: 2017-06-20
CHANGSHU ZHONGLIAN PHOTOELECTRICITY NEW STUFF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, such organic flame retardants are often not resistant to precipitation and migration resistance, especially after long-term hot water soaking (70℃*168h), they are easy to precipitate, and the materials are difficult to meet the requirements of low-smoke halogen-free cable materials in GB/T32129-2005 Requirements for the change rate of mechanical properties after immersion in water, and its cost is much higher than that of inorganic flame retardants
[0005] There are also related researchers who use propylene-based elastomers to improve the softness of materials, such as the Chinese patent authorization announcement number CN101397380B (a high-temperature-resistant, soft, low-smoke, halogen-free, flame-retardant polyolefin cable material). This type of elastomer can improve the flexibility of materials. It can also increase the heat resistance level of thermo

Method used

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  • High-temperature-resistant soft thermoplastic low-smoke halogen-free flame-retardant polyolefin cable material
  • High-temperature-resistant soft thermoplastic low-smoke halogen-free flame-retardant polyolefin cable material

Examples

Experimental program
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Example Embodiment

[0021] Example 1:

[0022] Weigh in parts by weight: 55 parts of ethylene-vinyl acetate copolymer with a mass % content of vinyl acetate monomer of 33%, 35 parts of an olefin block copolymer resin with a trade mark of INFUSE9010, and a horse with a graft ratio of 1.5% 10 parts of lythenic anhydride grafted ethylene-vinyl acetate copolymer, 120 parts of aluminum hydroxide, 10 parts of SFR-100 silicone, 1.5 parts of vinyltrimethoxysilane, 0.07 parts of dicumyl peroxide, low 1 part of molecular weight ethylene-maleic anhydride copolymer, 1.5 parts of ethylene bis-stearic acid amide, 1 part and 1 part of ditetradecyl thiodipropionate. The olefin block copolymer resin described in this example is a molecular structure with hard segments and soft segments synthesized by chain shuttling technology, wherein: the hard segment has a crystallizable ethylene-octene with low comonomer content and melting temperature. Chain segments, soft segments of amorphous ethylene-octene with high co...

Example Embodiment

[0034] Example 2:

[0035] Weigh in parts by weight: 45 parts of ethylene-methyl acrylate copolymer with a content of 30% by mass of methyl acrylate monomer, 35 parts of olefin block copolymer resin, and grafted maleic anhydride with a graft ratio of 1.3% 20 parts of ethylene-octene copolymer, 90 parts of aluminum hydroxide, 35 parts of hydromagnesite powder, 5 parts of sepiolite, 1.8 parts of vinyltriethoxysilane, 3,5,5-trimethyl peroxide 0.09 parts of tert-butyl caproate, 1 part of polyhydroxy magnesium stearate, 1.5 parts of ethylene bis-stearic acid amide, tetrakis[beta-(3',5'-di-tert-butyl-4'-hydroxyphenyl) 1.5 parts of pentaerythritol propionate and 1.0 part of ditetradecyl thiodipropionate. The contents not mentioned in this embodiment are the same as those in Embodiment 1.

[0036] Since the preparation example of this embodiment 2 is similar to the preparation example of embodiment 1, it will not be repeated.

[0037] The high temperature resistant soft thermoplast...

Example Embodiment

[0039] Example 3:

[0040] Weigh in parts by weight: 25 parts of ethylene-ethyl acrylate copolymer with 28% mass % content of ethyl acrylate monomer, 55 parts of olefin block copolymer resin, and 1.4% maleic anhydride grafted graft ratio 20 parts of ethylene-methyl acrylate copolymer, 100 parts of aluminum hydroxide, 50 parts of magnesium hydroxide, 7 parts of silicone, 1 part of vinyl tris(β-methoxyethoxy) silane, 1,1-bis( 0.07 part of tert-butylperoxy)-3,5,5-trimethylcyclohexane, 2 parts of ethylene bis-stearic acid amide, 2 parts of silicone, tetrakis[beta-(3',5'-di-tert- 1.8 parts of butyl-4'-hydroxyphenyl)propionic acid]pentaerythritol ester and 1.2 parts of bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite. The contents not mentioned in this embodiment are the same as those in Embodiment 1.

[0041] Since the preparation method of this embodiment 3 is similar to the preparation example of embodiment 1, it will not be repeated.

[0042] The high temperature resis...

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Abstract

The invention discloses a high-temperature-resistant soft thermoplastic low-smoke halogen-free flame-retardant polyolefin cable material, and belongs to the technical field of cable sheath or insulation high-molecular material. The high-temperature-resistant soft thermoplastic low-smoke halogen-free flame-retardant polyolefin cable material is composed of 100 parts of a matrix resin, 100 to 150 parts of inorganic fire retardant, 3 to 10 parts of a flame-retardant synergistic agent, 1.0 to 2.0 parts of a silane coupling agent, 0 to 0.1 part of a peroxide, 1 to 4 parts of a lubricant, and 2.0 to 4.0 parts of an anti-oxidant; the matrix resin is composed of, by weight, 25 to 60 parts of an ethylene copolymer, 20 to 55 parts of an alkene segmented copolymer, and 10 to 25 parts of a compatilizer. The flame resistance and softness of the high-temperature-resistant soft thermoplastic low-smoke halogen-free flame-retardant polyolefin cable material are ensured; the high-temperature-resistant soft thermoplastic low-smoke halogen-free flame-retardant polyolefin cable material prepared via blending possesses excellent heat resistance and low temperature performance; material mechanical performance is ensured; and material hardness is reduced.

Description

technical field [0001] The invention belongs to the technical field of polymer materials for wire and cable sheathing or insulation, and specifically relates to a high-temperature-resistant soft thermoplastic low-smoke halogen-free flame-retardant polyolefin cable material. Background technique [0002] The thermoplastic low-smoke, halogen-free, flame-retardant polyolefin cable materials in the prior art generally use PE / EVA as the main base material, and a large amount of inorganic flame retardant is added, and the hardness exceeds 95A, which makes the obtained cable feel stiff and difficult to completely reverse. , easy to crack. A typical example is CN1796450A (a low-smoke halogen-free flame-retardant polyolefin cable compound and its preparation method). [0003] Using ethylene-octene copolymer elastomer or ethylene-butylene copolymer elastomer can improve the flexibility of thermoplastic low-smoke halogen-free polyolefin cables, but because the melting point of the eth...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L53/00C08L51/06C08K13/02C08K3/22C08K5/5425C08K5/14C08K5/20C08K3/34C08K3/26C08K13/04C08K7/24C08K5/544H01B3/44
CPCC08K2201/011C08L23/0853C08L23/0869C08L53/00C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2205/025C08L2205/03C08L2205/035C08L2205/08H01B3/441C08L51/06C08K13/02C08K2003/2227C08K5/5425C08K5/14C08K5/20C08K2003/267C08K3/34C08K2003/2224C08K13/04C08K7/24C08K5/544
Inventor 管文武朱俊张尔梅
Owner CHANGSHU ZHONGLIAN PHOTOELECTRICITY NEW STUFF
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