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Silicon rubber for large-scale injection moulding vulcanization and preparation method thereof

A technology of injection molding and silicone rubber, applied in rubber insulators, organic insulators, etc., can solve problems such as the limitation of silicone rubber jackets, and achieve the effects of improving physical properties, improving operational reliability, and improving electrical performance

Inactive Publication Date: 2010-06-09
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1) Volume resistivity, mechanical tear strength, water repellency, hardness and mechanical tensile strength need to be improved, and the application of silicone rubber jackets in high-voltage and ultra-high-voltage power transmission and distribution is limited;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation method that is used for the silicone rubber of large-scale injection molding vulcanization, comprises the following steps:

[0024] 1) Weigh 100 parts of methyl vinyl silicone rubber, 2 parts of colorant black carbon black, 30 parts of reinforcing agent white carbon black, 2.5 parts of coupling agent aminopropyltriethoxysilane KH550, 110 parts of fuel aluminum hydroxide, 2 parts of softener methyl silicone oil and 0.4 part of active agent zinc oxide;

[0025] 2) Put the methyl vinyl silicone rubber and colorant black carbon black weighed in step 1) into a kneader, knead for 5 to 10 minutes, add 2 parts of methyl silicone oil, and then add white carbon black, Coupling agent aminopropyltriethoxysilane KH550, its mass concentration is not less than 95%; add half of each of white carbon black and KH550 for the first time, that is, 15 parts of white carbon black, 1.25 parts of KH550, and The environment is mixed evenly, after mixing for 40 minutes, white car...

Embodiment 2

[0030] The preparation method that is used for the silicone rubber of large-scale injection molding vulcanization, comprises the following steps:

[0031] 1) Weigh 90 parts of methyl silicone rubber, 1 part of coloring agent black carbon black, 20 parts of reinforcing agent superfine white carbon black, coupling agent γ-(methacryloyloxy)propyl trimethyl 1 part of base silane KH570, 90 parts of flame retardant aluminum hydroxide, 1 part of softener methyl silicone oil and 2 parts of active agent zinc oxide;

[0032] 2) Put the methyl vinyl silicone rubber and colorant black carbon black weighed in step 1) into a kneader, knead for 5 to 10 minutes, then add ultrafine white carbon black and coupling agent KH570 in two times, Its mass concentration is not less than 95%. For the first time, add ultra-fine white carbon black, half of the components of the coupling agent KH570, that is, 10 parts of ultra-fine white carbon black, 0.5 parts of KH570, and 1 part of methyl silicone oil. ...

Embodiment 3

[0037] The preparation method that is used for the silicone rubber of large-scale injection molding vulcanization, comprises the following steps:

[0038] 1) Weigh 120 parts of methyl vinyl silicone rubber, 3 parts of colorant black carbon black, 50 parts of reinforcing agent white carbon black, coupling agent γ-(methacryloyloxy)propyl trimethyl 8 parts of base silane KH570, 150 parts of flame retardant magnesium hydroxide, 3 parts of softener methyl silicone oil and 3.5 parts of active agent zinc oxide;

[0039] 2) Put the methyl vinyl silicone rubber and colorant black carbon black weighed in step 1) into a kneader, knead for 5 to 10 minutes, and then add white carbon black and coupling agent KH570 in two times. The concentration is not lower than 95%, half of each component is added for the first time, that is, 25 parts of white carbon black, 4 parts of KH570, and 3 parts of methyl silicone oil. Add white carbon black and the remaining half of each component of coupling ag...

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Abstract

The invention discloses silicon rubber for large-scale injection moulding vulcanization, which is characterized in that: the silicon rubber is prepared from the following raw materials in part by weight: 90 to 120 parts of silicon rubber, 20 to 50 parts of reinforcing agent, 1 to 8 parts of coupling agent, 0.05 to 0.5 part of vulcanizing agent, 1 to 3 parts of softening agent, 0.4 to 3.5 parts of active agent, 90 to 150 parts of flame retardant, and 1 to 3 parts of coloring agent. The method not only improves the mechanical strength of the heat vulcanized silicone rubber, but also improves all electric properties of the silicone rubber sheath and shed of a composite pillar insulator, and also improves the operational reliability of the composite pillar insulator.

Description

technical field [0001] The invention belongs to a vulcanized and molded silicone rubber and a preparation method in the field of composite insulator production, in particular to a vulcanized silicone rubber for large-scale injection molding and a preparation method. Background technique [0002] At present, insulators for high voltage and ultra-high voltage are mainly porcelain insulators. Composite post insulators are a kind of insulators developed in recent years. They are mainly composed of inner insulators, flanges, and silicone rubber sheaths. The different insulators are different, mainly in the following categories: [0003] One is that the epoxy resin mandrel is used as the inner insulator and the flange is glued together, and then vulcanized by an injection vulcanizing machine to form a silicone rubber jacket outside the mandrel. [0004] Another method is to make the inner insulator and the flange from the porcelain mandrel, and then vulcanize it by an injection v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K13/02C08K3/04C08K5/544C08K5/5425C08K5/14C08K5/20C08K3/22B29C45/14B29C45/76B29B7/00H01B3/28
Inventor 姚喜年罗四维吉虹马西武
Owner CHINA XD ELECTRIC CO LTD
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