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Compounded rubber for making chemical-corrosion-resistant composite insulator and preparation method thereof

A technology for composite insulators and chemical corrosion resistance, which is applied in the field of preparation of compound rubber for composite insulators, and can solve problems such as unfavorable safety and long-term use of composite insulators, corrosion of shed sheds of composite insulators, and degradation of aging resistance. Achieve excellent chemical corrosion resistance, good mechanical properties and electrical insulation, and improved compatibility

Inactive Publication Date: 2012-12-12
XUZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER +4
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most composite insulators are used outdoors, and the outdoor environment is harsh, especially in heavy pollution areas such as coastal areas, saline-alkali areas, cement plants, chemical plants, metallurgy, and power plant pollution sources. Natural enrichment or industrial discharges cause saline-alkali or acid in the environment The substance content is too high. These substances adhere to the surface of the composite insulator with the moisture in the environment or rain, snow, and haze, causing the shed sheath of the composite insulator to be corroded, and the hydrophobic performance is seriously reduced, and the aging resistance performance is also reduced, which is very bad. Conducive to the safe and long-term use of composite insulators

Method used

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  • Compounded rubber for making chemical-corrosion-resistant composite insulator and preparation method thereof
  • Compounded rubber for making chemical-corrosion-resistant composite insulator and preparation method thereof
  • Compounded rubber for making chemical-corrosion-resistant composite insulator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] refer to figure 1 And Table 7, Table 7 lists the proportion of raw materials in this embodiment (based on 100 parts of raw silicone rubber), wherein the raw silicone rubber is methyl vinyl silicone rubber with a vinyl content of 0.04 to 0.12%, as shown in Table 7 Raw materials The method for preparing a rubber compound for manufacturing a chemically resistant composite insulator comprises the following steps:

[0039] step a. Pre-kneading, put 1 part of epoxy resin E-20 modified methyl silicone resin (the weight ratio of epoxy resin to silicone resin is 40:60) and 40 parts of silicone rubber raw rubber into the kneader, knead into a group , feed nitrogen into the kneader, when the kneader is heated to 60-80°C, start vacuuming for vacuum kneading, the vacuum degree is -0.03--0.05Mpa, the vacuum kneading temperature is 150-160°C, and the vacuum kneading time is 40 ~60min, the first kneaded material is obtained after discharging;

[0040] Step B. The primary kneaded ma...

Embodiment 2

[0054] refer to figure 1 And Table 7, Table 7 lists the raw materials of this embodiment and the parts by weight of each raw material, wherein the raw silicone rubber is methyl vinyl silicone rubber with a vinyl weight content of 0.13-0.20%. According to the raw materials in Table 7, the method for preparing the compounded rubber for the manufacture of chemical aging-resistant composite insulators differs from Example 1 in that:

[0055] step a. Pre-kneading, put 3 parts of epoxy resin E-20 modified methyl silicone resin into the kneader (the weight ratio of epoxy resin to silicone resin is 50:50), 1 part of KH-560 silane coupling agent and 35 parts of silicone rubber raw rubber, after kneading into agglomerates, feed nitrogen into the kneader, when the kneader is heated to 60-80°C, start vacuuming for vacuum kneading, the vacuum degree is -0.03-0.05Mpa, the vacuum kneading temperature The temperature is 150-160°C, the vacuum kneading time is 40-60 minutes, and the primary k...

Embodiment 3

[0065] refer to figure 1 And Table 7, Table 7 lists the raw materials of this embodiment and the parts by weight of each raw material, wherein the raw silicone rubber is methyl vinyl silicone rubber with a vinyl weight content of 0.21-0.24%. According to the raw materials in Table 7, the method for preparing the compounded rubber for the manufacture of chemical aging-resistant composite insulators differs from Example 1 in that:

[0066] step a. Pre-kneading, put 5 parts of epoxy resin E-20 modified methyl silicone resin into the kneader (the weight ratio of epoxy resin to silicone resin is 60:40), 3 parts of KH-560 silane coupling agent, 0.2 parts of triethanolamine and 30 parts of silicone rubber raw rubber, after kneading into a group, feed nitrogen into the kneader, when the kneader is heated to 60-80 °C, start vacuuming for vacuum kneading, the vacuum degree is -0.03-0.05 Mpa, the vacuum kneading temperature is 150-160°C, the vacuum kneading time is 40-60min, and the pr...

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Abstract

The invention provides a compounded rubber for making a chemical-corrosion-resistant composite insulator, which is compounded from the following main raw materials in parts by weight: 100 parts of unvulcanized silicon rubber, 1-10 parts of epoxy resin E-20 modified methyl silicon resin, 18-40 parts of modified gas-phase silicon dioxide, 1-15 parts of silane coupling agent, 90-180 parts of active aluminum hydroxide powder and 0-1.2 parts of triethanolamine, wherein the silane coupling agent is one or mixture of A-151 silane coupling agent, A-171 silane coupling agent and KH-560 silane coupling agent; the unvulcanized silicon rubber is methylvinyl silicon rubber of which the vinyl content is 0.04-0.35%; and the content of epoxy resin in the epoxy resin E-20 modified methyl silicon resin is 40-75%. The invention also provides a preparation method of the compounded rubber. The test proves that the compounded rubber has favorable chemical corrosion resistance; and the composite insulator made from the compounded rubber is especially suitable for saline-alkali regions and chemical and dust pollution regions.

Description

Technical field [0001] The present invention involves composite insulators for preparation technology. Background technique [0002] Silicon rubber mixed glue is currently the main composite insulator umbrella skirt shelf material. Its raw glue is generally a polytoma siliconane (PDMS) with a molecular weight of 400 to 800,000.", Is colorless, odorless, non -toxic, non -toxic, non -mechanical impurities, and the silicone rubber itself is poorly resistant to acid and alkali. Under the external environmental conditions of complex changes in acid rain, alkaline, salt fog, ultraviolet rays,The surface is easily damaged and caused water hate.In the process of mixed glue, adding appropriate reinforcement agents, structured control agents, corrosion resistance and other auxiliary materials, after preliminary pinching, heating, vacuum pinch, and mixingAfter forming of vulcanization and glue molding molding, it is made into a composite insulated umbrella skirt cover, giving the composite ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/06C08L83/05C08L63/00C08K13/06C08K3/36C08K3/22C08K5/5435C08K5/17B29B7/00
Inventor 欧阳旭丹邢军盘素芬刘洋李鸿泽唐湘军李燕林林建标
Owner XUZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER
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