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Industrial process for producing silicon rubber polyolefin alloy cable material

A rubber-plastic alloy and cable technology, which is applied in the preparation of rubber-plastic alloy cable materials and the industrial preparation of silicone rubber-polyolefin alloy cable materials, can solve the problems of high price, limited application scope and low mechanical strength.

Active Publication Date: 2011-01-12
ANHUI HUALING CABLE GRP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] Silicone rubber (MVQ) has outstanding high temperature resistance, aging resistance, weather resistance, excellent electrical insulation and physiological inertia, so it has been widely used, but its disadvantages are low mechanical strength, poor acid and alkali resistance, and high price. , the expensive price of silicone rubber limits its application range

Method used

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  • Industrial process for producing silicon rubber polyolefin alloy cable material
  • Industrial process for producing silicon rubber polyolefin alloy cable material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] (1) Take 100 parts of MVQ, 40 parts of LDPE, SiO 2 35 parts, 1.0 parts of 2,6-di-tert-butylphenol, 1.0 parts of DCP, 0.5 parts of methyl vinyl silicone oil, and 1.5 parts of hydroxyl silicone oil.

[0028] 1. Start the vacuum kneader, add MVQ, and dry the SiO 2 Divide into three equal parts, add 1 / 3 of the amount for the first time, 120°C, fast pulp speed 30rpm, vacuum degree -0.094MPa, knead for 5min, then add 1 / 3 of the amount of SiO 2 , mixed for 5 minutes, and finally added the remaining 1 / 3 of SiO 2 , Mixed for 5min to obtain the reinforced rubber compound (I).

[0029] 2. Start the electric temperature-controlled kneader, add LDPE and free radical scavenger, knead at 180°C, fast pulp speed 30rpm for 5-6min, then add reinforcing rubber compound (I), knead for 15-20min, filter The modified rubber compound (II) is obtained after filtering through a rubber machine.

[0030] 3. Start the double-roller machine, add the modified rubber compound (II), raise the temper...

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Abstract

The invention relates to a method for preparing a silastic polyolefin alloy cable material. The method comprises kneading and mixed refining, double-roller mixed refining and filtering, thin-passing, strip slicing and extrusion; the kneading mixing comprises the following steps: (1) silastic and dried white carbon black are subjected to mixed refining in a vacuum kneading machine to obtain reinforced mixed refining rubber (I); and (2) polyolefin, a free radical trapping agent and the reinforced mixed refining rubber (I) are subjected to mixed refining in an electric control kneading machine to obtain modified mixed refining rubber (II); and in the double-roller mixed refining, the modified mixed refining rubber (II), methyl vinyl silicon oil and hydroxy silicon oil are subjected to mixedrefining and are added with a crosslinking agent and are continuously subjected to mixed refining to obtain the silastic polyolefin alloy cable material. The material has tensile strength of more than 6.0MPa and the tearing strength of more than 13.6kN / m, can bear the ambient temperature of between 100 and 120 DEG C for a long period, can be used as a cable insulant and is in particular suitable for a high-temperature resistant type cable sheath material.

Description

1. Technical field [0001] The invention relates to a method for preparing insulating materials for cables, in particular to a method for preparing rubber-plastic alloy cable materials, in particular to an industrial preparation method for silicone rubber polyolefin alloy cable materials. 2. Background technology [0002] For many years, medium and low voltage cables have mostly used polyolefin (Polyolefin), which not only has low cost, but also has low relative permittivity, loss factor, high resistivity, and has excellent mechanical properties and excellent electrical properties at ambient temperatures below 90°C. , and has good acid and alkali resistance, so that most synthetic rubbers, such as styrene-butadiene rubber (SBR), butyl rubber (IIR), and chloroprene rubber (CR), have lost part of their market share. [0003] Silicone rubber (MVQ) has outstanding high temperature resistance, aging resistance, weather resistance, excellent electrical insulation and physiological ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08K3/36C08K5/13C08K5/14C08J3/24H01B3/28B29B7/28B29B7/72B29B7/90C08L23/06C08L23/12C08L47/00C08L83/07
Inventor 胡光政丁运生
Owner ANHUI HUALING CABLE GRP
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