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Antiaging torsion-resistant ethylene-propylene rubber for wires and cables and preparation method thereof

A technology of ethylene-propylene rubber, wire and cable, applied in the field of power cables, can solve the problems of ethylene-propylene rubber varieties and cable insulation requirements, etc., and achieve the effect of simple and feasible preparation method, good torsion performance, and easy promotion

Inactive Publication Date: 2016-06-08
刘高志
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the 1990s, my country's cable industry also considered phasing out natural-styrene-butadiene rubber, but domestically produced ethylene-propylene rubber varieties could not meet the cable insulation requirements, so natural-styrene-butadiene rubber insulated cables have not yet disappeared

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Preparation of ethylene propylene rubber

[0023] The proportion of raw materials by weight:

[0024] EPDM rubber, 90 parts; acrylic acid, 5 parts; p-aminobenzenesulfonic acid, 2 parts; ammonium persulfate, 1.5 parts; mercaptopropionic acid, 0.7 parts; phenyl-β-naphthylamine, 0.5 parts; initiator , 2 parts; anti-aging agent, 3 parts; flame retardant, 1.5 parts; a total of 0.5 parts of benzotriazole and sulfurized isobutylene; the weight ratio of benzotriazole and sulfurized isobutylene is 4:1.

[0025] Preparation:

[0026] Step S1, heating and premixing EPDM rubber, acrylic acid, p-aminobenzenesulfonic acid, ammonium persulfate, mercaptopropionic acid, phenyl-β-naphthylamine, benzotriazole and vulcanized isobutylene, the heating temperature is 53 ~57℃;

[0027] Step S2, heating and fully mixing the initiator, anti-aging agent and flame retardant with the mixture in step S1, the heating temperature is 60-64°C;

[0028] In step S3, the mixture in step S2 is added to a ...

Embodiment 2

[0029] Example 2: Preparation of ethylene propylene rubber

[0030] The proportion of raw materials by weight:

[0031] EPDM rubber, 80 parts; acrylic acid, 4 parts; p-aminobenzenesulfonic acid, 1 part; ammonium persulfate, 1 part; mercaptopropionic acid, 0.6 parts; phenyl-β-naphthylamine, 0.4 parts; initiator , 1 part; anti-aging agent, 2 parts; flame retardant, 1 part; a total of 0.4 parts of benzotriazole and sulfurized isobutylene; the weight ratio of the benzotriazole and sulfurized isobutylene is 3:1.

[0032] Preparation:

[0033] Step S1, heating and premixing EPDM rubber, acrylic acid, p-aminobenzenesulfonic acid, ammonium persulfate, mercaptopropionic acid, phenyl-β-naphthylamine, benzotriazole and vulcanized isobutylene, the heating temperature is 53 ~57℃;

[0034] Step S2, heating and fully mixing the initiator, anti-aging agent and flame retardant with the mixture in step S1, the heating temperature is 60-64°C;

[0035] In step S3, the mixture in step S2 is added to a twin...

Embodiment 3

[0036] Example 3: Preparation of ethylene propylene rubber

[0037] The proportion of raw materials by weight:

[0038] EPDM rubber, 100 parts; acrylic acid, 6 parts; p-aminobenzenesulfonic acid, 3 parts; ammonium persulfate, 2 parts; mercaptopropionic acid, 0.8 parts; phenyl-β-naphthylamine, 0.6 parts; initiator , 3 parts; anti-aging agent, 4 parts; flame retardant, 2 parts; a total of 0.6 parts of benzotriazole and sulfurized isobutylene; the weight ratio of the benzotriazole and sulfurized isobutylene is 5:1.

[0039] Preparation:

[0040] Step S1, heating and premixing EPDM rubber, acrylic acid, p-aminobenzenesulfonic acid, ammonium persulfate, mercaptopropionic acid, phenyl-β-naphthylamine, benzotriazole and vulcanized isobutylene, the heating temperature is 53 ~57℃;

[0041] Step S2, heating and fully mixing the initiator, anti-aging agent and flame retardant with the mixture in step S1, the heating temperature is 60-64°C;

[0042] In step S3, the mixture in step S2 is added to a...

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PUM

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Abstract

The invention discloses an antiaging torsion-resistant ethylene-propylene rubber for wires and cables and a preparation method thereof. The ethylene-propylene rubber is prepared from the following raw materials in parts by weight: 80-100 parts of ethylene propylene diene monomer rubber, 4-6 parts of acrylic acid, 1-3 parts of sulfanilic acid, 1-2 parts of ammonium persulfate, 0.6-0.8 part of mercaptopropionic acid, 0.4-0.6 part of phenyl-beta-naphthylamine, 1-3 parts of initiator, 2-4 parts of antiaging agent, 1-2 parts of flame retardant, and 0.4-0.6 part of benzotriazole and vulcanized isobutylene. The weight ratio of the benzotriazole to the vulcanized isobutylene is (3-5):1. The ethylene-propylene rubber disclosed by the invention has excellent aging resistance and torsion resistance, which can be related to the weight ratio of the benzotriazole to the vulcanized isobutylene in the raw materials. When the weight ratio of the benzotriazole to the vulcanized isobutylene is (3-5):1, the ethylene-propylene rubber has the optimal aging resistance and torsion resistance, and is suitable for preparing antiaging torsion-resistant cables.

Description

Technical field [0001] The invention belongs to the field of power cables and relates to cable materials, in particular to an anti-aging and torsion resistant ethylene propylene rubber for wires and cables and a preparation method thereof. Background technique [0002] Dating back to the 19th century, natural rubber is one of the earliest materials used in cable insulation in the world. In the beginning, raw rubber was directly used to wrap the copper conductor, which was also regarded as a rubber insulated cable, but its moldability was poor. Later, the vulcanization technology was invented, a small amount of sulfur was mixed into the raw rubber, wrapped on a copper conductor, and the cable was heated with steam. After a chemical reaction, the vulcanized rubber became a thermosetting material with good mechanical properties. After many improvements and blending of styrene-butadiene rubber, the use of natural-styrene-butadiene rubber insulated cables continued in foreign countri...

Claims

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Application Information

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IPC IPC(8): C08L51/04C08K13/02C08K3/32C08K5/18C08K5/3475C08K5/45C08L23/16C08F255/06C08F220/06B29C47/92H01B3/28H01B3/18B29C48/92
CPCC08K13/02B29C48/92B29C2948/92704C08F255/06C08K3/32C08K5/18C08K5/3475C08K5/45C08K2003/323C08L2201/08C08L2203/202H01B3/18H01B3/28C08L51/003C08L51/04C08L23/16C08F220/06
Inventor 刘高志
Owner 刘高志
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