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Halogen-free flame retardant thermoplastic polyolefin cable material

A thermoplastic polyolefin and cable material technology, applied in the field of polyolefin cable material, can solve the problems of the physical and mechanical properties of the cable material, the deterioration of the electrical properties, the processing performance, the inability to achieve the flame retardant grade, the large amount of smoke generated by the cable, etc., and achieve excellent physical and mechanical properties. Mechanical properties, easy for large-scale promotion and use, and the effect of low smoke generation

Inactive Publication Date: 2013-08-28
GUANGDONG JUSHI CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its inorganic flame retardant is mainly aluminum hydroxide or magnesium hydroxide, but due to the low flame retardant efficiency of aluminum hydroxide or magnesium hydroxide, in order to achieve a better flame retardant effect, the amount of aluminum hydroxide or magnesium hydroxide added It is very large, and the amount added is at least 50%, sometimes even 75%. When this kind of cable material is applied to thin-walled wires, it still cannot meet the requirements of UL1581 VW-1 flame retardant grade.
And due to the need to add a large amount, the physical and mechanical properties, electrical properties, and processing properties of the cable material will deteriorate
[0005] At present, there are many studies on phosphorus-nitrogen flame retardants as cable flame retardants. Representative phosphorus-nitrogen flame retardants include: organic hypophosphite, inorganic hypophosphite, polyphosphate, nitrogen-based flame retardants , phosphate ester flame retardants and their compound flame retardants, etc. The use of these flame retardants has a much higher flame retardant efficiency than aluminum hydroxide or magnesium hydroxide flame retardants, and the amount of flame retardants added is 30 ~35% can reach the UL1581 VW-1 flame retardant grade, but the cable added with this flame retardant has a large amount of smoke, which is not conducive to environmental protection, and the production cost is high

Method used

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  • Halogen-free flame retardant thermoplastic polyolefin cable material
  • Halogen-free flame retardant thermoplastic polyolefin cable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In this example, the compound flame retardant is made by mixing 60 parts of piperazine borate phosphate and 40 parts of melamine polyphosphate, wherein piperazine borate phosphate is surface-treated with 1% silane and has an average particle size of 3 μm. The average particle size of melamine phosphate is 5 μm.

[0041] The raw material composition of the halogen-free flame-retardant thermoplastic polyolefin cable material in this embodiment is shown in Table 1.

[0042] raw material name parts by weight raw material name parts by weight Linear Low Density Polyethylene 0 Zinc borate 4 Ethylene vinyl acetate 20 A silane coupling agent 1 Compound Flame Retardant 20 Dilauryl Thiodipropionate 0.5 Maleic anhydride grafted polyethylene 5 Zinc stearate 1

[0043] Table 1

[0044] The preparation method of this embodiment is,

[0045] (1) Prepare a compound flame retardant first, which is made by mixing 60 parts of piperaz...

Embodiment 2

[0050] In this example, the compound flame retardant is made by mixing melamine borate 75 and 25 parts of phosphate ester melamine salt, wherein piperazine phosphate borate is surface-treated with 1% silane and has an average particle size of 7 μm, polyphosphoric acid The average particle size of melamine is 15 μm.

[0051] The raw material composition of the halogen-free flame-retardant thermoplastic polyolefin cable material in this embodiment is shown in Table 2.

[0052] raw material name parts by weight raw material name parts by weight High-density polyethylene 20 Antimony trioxide 20 Ethylene methyl acrylate 50 Titanate coupling agent 2 Compound Flame Retardant 30 Dioctadecyl Thiodipropionate 2 Maleic anhydride grafted ethylene vinyl acetate 10 Ethylene bis stearamide 5

[0053] Table 2

[0054] The preparation method of the halogen-free flame-retardant thermoplastic polyolefin cable material in this example is the ...

Embodiment 3

[0056] In this example, the compound flame retardant is mixed by N, N-dimethyl-p-phenylenediamine borate 85 and 15 parts of neopentyl glycol phosphate melamine salt, wherein phosphate piperazine borate is 1% The amount of silane used for surface treatment and the average particle size is 15 μm, and the average particle size of melamine polyphosphate is 25 μm.

[0057] The raw material composition of the halogen-free flame-retardant thermoplastic polyolefin cable material in this embodiment is shown in Table 3.

[0058]

[0059] table 3

[0060] The preparation method of the halogen-free flame-retardant thermoplastic polyolefin cable material in this example is the same as that in Example 1.

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Abstract

The invention discloses a halogen-free flame retardant thermoplastic polyolefin cable material. The cable material consists of the following components in parts by weight: 0-40 parts of polyethylene resin, 20-80 parts of ethylene copolymer, 20-40 parts of compound flame retardant, 5-20 parts of compatilizer, 4-50 parts of flame retardant synergist, 1-4 parts of coupling agent, 0.5-4 parts of antioxidant and 1-10 parts of processing aid. According to the halogen-free flame retardant thermoplastic polyolefin cable material disclosed by the invention, the flame retardant is formed by compounding a borate flame retardant and a phosphorus nitrogen flame retardant; by adding a small amount of compound flame retardant, the cable material obtains a good flame retardant effect and an excellent smoke suppression effect; and the cable material has low smoke density and low toxicity index.

Description

technical field [0001] The invention relates to plastics for wires and cables, in particular to a low-smoke, halogen-free, flame-retardant polyolefin cable material with high thermoplasticity and high plasticity. Background technique [0002] Traditional flame-retardant cable materials mainly use PVC and polyolefins added with halogen-based flame retardants, but halogen-containing cable materials (PVC itself contains halogen) will produce harmful gases and more smoke when burned. , these harmful gases and smoke will threaten human health and cause secondary damage to sophisticated electronic instruments, causing immeasurable losses. [0003] In recent years, the European Union has launched RoHS Directive, WEEE Directive, REACH Directive and EuP Directive and other related directives. The EuP Directive requires that wire and cable products entering the EU market must meet halogen-free requirements. Halogen-free environmentally friendly flame-retardant wire and cable materi...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L23/06C08K9/06C08K5/3477C08K5/3492C08K3/38C08K5/098C08K3/22
Inventor 曾昌作莫伟利何燕岭张秀芹梁发雄李玲玉
Owner GUANGDONG JUSHI CHEM CO LTD
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