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Preparation method of a 150°C high flame retardant radiation crosslinked low smoke halogen-free cable material

A cable material and high flame-retardant technology, which is applied in the field of preparation of high flame-retardant radiation cross-linked low-smoke halogen-free cable material at 150°C, can solve the problems of reducing the mechanical and electrical properties of the material, material aging, degradation, etc.

Active Publication Date: 2020-10-23
OPTA POLYMER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Since flame retardants containing halogens cannot be used, only non-toxic inorganic flame retardants such as aluminum hydroxide, magnesium hydroxide, and zinc borate can be used. These flame retardants need to be added more than 65% (mass percentage) to It plays a very good flame retardant effect, and a large amount of inorganic flame retardants will greatly reduce the mechanical and electrical properties of the material, and it is easy to crack, so how to select and introduce high-efficiency flame retardants to reduce the amount of inorganic flame retardants Or do not use inorganic flame retardants, which is the most important technical key;
[0004] (2) The traditional physical blending method cannot completely solve the problem of compatibility between inorganic flame retardants and polymer resins, resulting in the oxygen free radicals generated in the air at high temperatures are more likely to bond with radicals with lower bond energy in polymer resins. group reaction, thereby aging or degrading the material
[0005] (3) In order to achieve the effect of high temperature resistance in the existing technology, it is usually necessary to add more types and total amounts of antioxidants, and there is a risk of precipitation; how to improve the high temperature stability of the material itself and reduce the overall amount of antioxidants , which is the most important technical key

Method used

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  • Preparation method of a 150°C high flame retardant radiation crosslinked low smoke halogen-free cable material
  • Preparation method of a 150°C high flame retardant radiation crosslinked low smoke halogen-free cable material
  • Preparation method of a 150°C high flame retardant radiation crosslinked low smoke halogen-free cable material

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Experimental program
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Effect test

Embodiment 1

[0038] A 150°C high flame retardant radiation cross-linked low-smoke halogen-free cable material, in terms of mass percentage, the components and the content of each component are: 22% ethylene-vinyl acetate copolymer, 8% polyethylene, DOPO 38%, TAIC 18%, inorganic flame retardant 13%, initiator 0.7%, and antioxidant additive 0.3%. The sum of the mass percentages of each component is 100%.

[0039] Among them, the melt index of ethylene-vinyl acetate copolymer is 3.2g / 10min, the density of polyethylene is 0.906g / cm3, and the melt index is 3.0g / 10min; the purity of DOPO is 97%, the purity of TAIC is 96%, and the inorganic flame retardant It is aluminum hydroxide; the initiator is DCP with a purity of 96.3%; the antioxidant additive is tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, N,N' -Bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine and N,N"'-1,2-ethanediylbis[N-[3-[4,6 -Di[butyl(1,2,2,6,6-pentamethyl-4-piperidinyl)amino]-1,3,5...

Embodiment 2

[0063] A 150°C high flame retardant radiation cross-linked low-smoke halogen-free cable material, in terms of mass percentage, the components and the content of each component are: ethylene-vinyl acetate copolymer 26.5%, polyethylene 10%, DOPO 39%, TAIC 20%, inorganic flame retardant 2%, initiator 2%, and antioxidant additive 0.5%. The sum of the mass percentages of each component is 100%.

[0064] Among them, the melt index of ethylene-vinyl acetate copolymer is 3.2g / 10min, the density of polyethylene is 0.906g / cm3, and the melt index is 3.0g / 10min; the purity of DOPO is 97%, the purity of TAIC is 96%, and the inorganic flame retardant It is aluminum hydroxide; the initiator is DCP with a purity of 96.3%; the antioxidant additive is tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, N,N' -Bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine and N,N"'-1,2-ethanediylbis[N-[3-[4,6 -Di[butyl(1,2,2,6,6-pentamethyl-4-piperidinyl)amino]-1,3,5...

Embodiment 3

[0088] A 150°C high flame retardant radiation cross-linked low-smoke halogen-free cable material, in terms of mass percentage, the components and the content of each component are: ethylene-vinyl acetate copolymer 27%, polyethylene 13%, DOPO 35%, TAIC 16%, inorganic flame retardant 7%, initiator 1.5%, and antioxidant additive 0.5%. The sum of the mass percentages of each component is 100%.

[0089] Among them, the melt index of ethylene-vinyl acetate copolymer is 3.2g / 10min, and the density of polyethylene is 0.906g / cm 3 , the melt index is 3.0g / 10min; DOPO purity 97%, TAIC purity 97%, inorganic flame retardant is aluminum hydroxide; Initiator is DCP, and purity is 96.3%; Antioxidant auxiliary agent is four [β-(3, 5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, N,N'-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine and N ,N"'-1,2-ethanediylbis[N-[3-[4,6-bis[butyl(1,2,2,6,6-pentamethyl-4-piperidinyl)amino ]-1,3,5-triazin-2-yl]amino]propyl]-N,N"-d...

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Abstract

The invention discloses a method for preparing a 150 DEG high-flame retardancy radiation cross-linking low-smoke halogen-free cable. The total mass of a raw material formula is 100%, and the cable comprises the following components in percentage by mass: 20-30% of an ethylene-vinyl acetate copolymer, 8-14% of polyethylene, 30-40% of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, 10-20% of 1,3,5-triene propyl-s-triazine-2,4,6-triketone, 2-15% of aluminum hydroxide, 0.5-3% of an initiator and 0.3-0.5% of antioxidant aids. As a filling type inorganic flame retardant is not or slightly used, the cable prepared by using the method is excellent in mechanical property, electric property and cracking resistance.

Description

technical field [0001] The invention belongs to the technical field of cable material preparation, and in particular relates to a method for preparing a 150°C high flame-retardant irradiation cross-linked low-smoke halogen-free cable material. Background technique [0002] In the prior art, the low-smoke, halogen-free, flame-retardant polyolefin cable compound irradiated at 125°C is an environmentally friendly flame-retardant cable material developed to meet the characteristics of low smoke, halogen-free, non-toxic, flame-retardant, and high-temperature resistance. . It is a radiation cross-linkable cable material that uses polyolefin as the base material, aluminum hydroxide, magnesium hydroxide and other inorganic flame retardant materials as the flame retardant, and is blended, plasticized and granulated. The development of 150°C high flame retardant radiation crosslinked low smoke halogen free flame retardant polyolefin cable material should solve the following technical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L23/06C08K13/02C08K5/5313C08K5/3492C08K3/22H01B3/44B29C48/92
CPCB29C48/92B29C2948/92704C08K2003/2227C08L23/0853C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2312/06H01B3/441C08L23/06C08K13/02C08K5/5313C08K5/3492C08K3/22
Inventor 徐鑫森刘家成张成
Owner OPTA POLYMER JIANGSU
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