Preparation method of improved EPDM (Ethylene-Propylene-Diene Monomer) cable sheath material

A technology of EPDM rubber and cable sheath is applied in the field of cable materials, which can solve the problems of low strength, easy aging, and unsatisfactory heat resistance.

Inactive Publication Date: 2016-08-24
ANHUI HUAYU CABLE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heat resistance of the existing EPDM cable sheath materials is still not ideal, and the strength is low, and there is a phenomenon of aging in the process of use, which limits its scope of use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of preparation method of modified EPDM cable sheath material proposed by the present invention comprises the following steps:

[0022] S1. Add 75 parts by weight of EPDM rubber, 15 parts of chloroprene rubber, 15 parts of polypropylene and 2 parts of maleic anhydride grafted polypropylene into the double-roll mill for mixing, and obtain a Mixed rubber, wherein the mixing temperature is 45°C, and the mixing time is 3min;

[0023] S2. Set the temperature of the mixer to 55°C, add 100 parts of primary compound rubber in parts by weight, and then add 15 parts of montmorillonite, 3 parts of nano-aluminum nitride, 20 parts of barium sulfate and 5 parts of pre-dispersed phenolic hollow Microspheres, mixed for 1min, then added 1.5 parts of 5,5'-dimethyl-5,10-dihydroacridine, 0.5 parts of N-(1,3-dimethylbutyl)-N'-phenyl p-Phenylenediamine, 1.5 parts of anti-aging agent 2246, 0.5 parts of N-phenyl-2-naphthylamine, 0.5 parts of polybutylbisphenol-A, 0.1 parts of tris(nonyl...

Embodiment 2

[0026] A kind of preparation method of modified EPDM cable sheath material proposed by the present invention comprises the following steps:

[0027] S1. Add 50 parts of EPDM rubber, 35 parts of chloroprene rubber, 10 parts of polypropylene and 5 parts of maleic anhydride grafted polypropylene into the double-roll mill for mixing by weight, and obtain a Mixed rubber, wherein the mixing temperature is 35°C, and the mixing time is 8min;

[0028]S2. Set the temperature of the mixer to 75°C, add 100 parts of primary compound rubber in parts by weight, and then add 5 parts of montmorillonite, 15 parts of nano-aluminum nitride, 5 parts of barium sulfate and 20 parts of pre-dispersed phenolic hollow Microspheres, mixed for 5 minutes, then added 0.3 parts of 5,5'-dimethyl-5,10-dihydroacridine, 1.5 parts of N-(1,3-dimethylbutyl)-N'-phenyl p-Phenylenediamine, 0.2 parts of antioxidant 2246, 1.5 parts of N-phenyl-2-naphthylamine, 0.1 parts of polybutylbisphenol-A, 0.5 parts of tris(nonylp...

Embodiment 3

[0031] A kind of preparation method of modified EPDM cable sheath material proposed by the present invention comprises the following steps:

[0032] S1. Add 55 parts of EPDM rubber, 30 parts of chloroprene rubber, 12 parts of polypropylene and 4 parts of maleic anhydride grafted polypropylene into the double-roll mill for mixing by weight, and obtain a Mixed rubber, wherein, in the mixing process, the mixing temperature is 38 ° C, the mixing time is 7 minutes, and the roll distance of the two-roll mill is 3.5 mm;

[0033] S2. Put 100 parts of primary mixed rubber in parts by weight at room temperature for 15 hours, then add it into a mixer with a temperature of 72 ° C, and then add 12 parts of montmorillonite, 6 parts of nano-aluminum nitride, 16 parts of barium sulfate and 9 parts of pre-dispersed phenolic hollow microspheres, mixed for 4 minutes, then added 0.8 parts of 5,5'-dimethyl-5,10-dihydroacridine, 1.1 parts of N-(1,3-dimethylbutyl) -N'-phenyl-p-phenylenediamine, 0.8...

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PUM

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Abstract

The invention discloses a preparation method of an improved EPDM (Ethylene-Propylene-Diene Monomer) cable sheath material. The method comprises the following steps: mixing EPDM, chloroprene rubber, polypropylene and maleic anhydride grafted polypropylene to obtain a first rubber compound; adding montmorillonoid, nano aluminium nitride, barium sulfate and pre-dispersed phenolic aldehyde hollow microspheres to the first rubber compound, and mixing for 1 to 5 minutes; then adding 5, 5'-dimethyl-5, 10-dihydracridine, N'-(1, 3-dimethylbutyl)-N'-phenylenediamine, an age resister 2246, N-phenyl-naphthylamine, polybutylated bisphenol A, tri(nonylphenyl) phosphite, isproportionated potassium rosinate, vitamin C and pentaerythritol, and mixing for 2 to 5 minutes; adding stearic acid, a plasticizer TP-759, butylmercaptooxo stannane, phenolic resin, tin( II) chloride dehydrate, octadecylamine and an accelerant, and mixing for 3 to 8 minutes; performing thin-passing to obtain a second rubber compound; vulcanizing the second rubber compound to obtain the EPDM cable sheath material.

Description

technical field [0001] The invention relates to the technical field of cable materials, in particular to a preparation method of a modified EPDM cable sheath material. Background technique [0002] EPDM rubber is a terpolymer of ethylene, propylene and non-conjugated dienes. Its main polymer chain is fully saturated and has properties that can resist heat, light and oxygen. In addition, it is non-polar in nature. It is resistant to polar solutions and chemicals, has low water absorption, and has good insulation properties. It is one of the commonly used rubber materials for cable sheathing. With the development of society, people have put forward higher requirements on the performance of cables, as well as the quality and quantity of the cable sheath materials used. However, the heat resistance of the existing EPDM cable sheath materials is still not ideal, and the strength is low, and there is a phenomenon of aging easily during use, thereby limiting its application range....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B7/72B29C35/02C08L23/16C08L11/00C08L51/06C08L23/12C08K13/02C08K3/34C08K5/18C08K5/526C08K5/053
CPCB29B7/726B29B7/728B29C35/02C08L23/16C08L11/00C08L51/06C08L23/12C08K13/02C08K3/346C08K5/18C08K5/526C08K5/053
Inventor 肖文张传明王社峰王岳嵩叶宇宋渊盛招军盛茂
Owner ANHUI HUAYU CABLE GRP
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