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Preparation method of special material for injection moulding composite silicon rubber insulator mixing refine rubber

A technology of injection molding compounding and silicone rubber insulation, applied in the field of preparation of silicone rubber insulators, can solve problems such as adverse effects on physical and mechanical properties, affecting the storage period of mixed rubber, etc. The effect of improved performance

Inactive Publication Date: 2007-02-07
JIANGSU HONGDA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Hydroxy silicone oil produced by the domestic acetic anhydride method is slightly acidic. When used as a structural control agent in the production of mixed rubber, it will seriously affect the storage period of the mixed rubber and have an adverse effect on the physical and mechanical properties of the product after vulcanization.

Method used

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  • Preparation method of special material for injection moulding composite silicon rubber insulator mixing refine rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The basic silicone rubber was prepared by using KOH as a catalyst to produce methyl vinyl high temperature rubber through vacuum dehydration and secondary dehydration process.

[0019] Preparation of flame-retardant filler aluminum hydroxide micropowder, wherein methyl phenyl hydroxy silicone oil is used as a high temperature resistant dispersant, vinyl triethoxysilane is used as a reinforcing agent for filler treatment, and the treatment method is: 100 parts of aluminum hydroxide, methyl 0.5-1.5 parts of phenylhydroxy silicone oil, 0.5-1.5 parts of vinyl triethoxysilane, the three raw materials are measured and added to a high-speed kneader, heated to 150°C with steam, and stirred for 2 hours.

[0020] According to the following formula: 100 parts of methyl vinyl high temperature adhesive; 25 parts of white carbon black; 5 parts of structure control agent hydroxyl silicone oil; 0.1 part of release agent; 120 parts of aluminum hydroxide; 3 parts of iron oxide red; 0.4 pa...

Embodiment 2

[0022] Prepare basic silicone rubber, flame retardant filler aluminum hydroxide micropowder with the same example as in Example 1, and then according to the following formula, 100 parts of methyl vinyl high temperature glue; 40 parts of white carbon black; 6 parts of structural control agent hydroxyl silicone oil; 0.2 parts of release agent 110 parts of aluminum hydroxide; 3 parts of iron oxide red; 0.4 parts of vulcanizing agent. Add 100 kg of methyl vinyl high-temperature adhesive and 0.2 kg of release agent into a 500L kneader. After turning on the machine and stirring evenly, add 40 kg in two For fumed silica, add 25 kg and 15 kg each time, and the interval time is based on the initial molding of the rubber material after stirring. At the same time, 6 kg of structuring control agent hydroxy silicone oil was added, and after stirring and molding, the temperature was raised to 170° C. for 1 hour, and then vacuumed for 0.5 hour, and the material was discharged and cooled. Aft...

Embodiment 3

[0024] Prepare basic silicone rubber and flame-retardant filler aluminum hydroxide micropowder with the same example as in Example 1, and then follow the following formula, 100 parts of methyl vinyl high-temperature glue; 35 parts of white carbon black; 6 parts of structural control agent hydroxyl silicone oil; 0.3 parts of mold release agent 115 parts of aluminum hydroxide; 3 parts of iron oxide red; 0.4 parts of vulcanizing agent. Add 100 kg of methyl vinyl high-temperature glue and 0.3 kg of mold release agent into a 500L kneader. After turning on the machine and stirring evenly, add 35 kg of fumed silica three times, adding 20 kg, 10 kg, and 10 kg each time. The interval time is subject to the initial molding of the rubber material after stirring. At the same time, 6 kg of structuring control agent hydroxy silicone oil was added, and after stirring and molding, the temperature was raised to 165°C for 1 hour, and then vacuumed for 0.5 hour, and the material was discharged a...

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Abstract

the invention discloses a preparing method of insulator melted gel, which is characterized by the following: adopting hydroxyl silicon oil through potassium hydroxide method to replace national acetic anhydride method; utilizing dynamic high-temperature method to dispose aluminium hydroxide for flame-proof material; improving mixed property and manufacturing property of gel through associating methyl phenyl hydroxyl silicon oil and silane methyl vinyl triethoxy; fitting for injecting mould.

Description

technical field [0001] The invention relates to the preparation technology of silicon rubber insulators, in particular to a method for preparing special mixing rubber materials for injection molding composite silicon rubber insulators by using potassium hydroxide as a catalyst. Background technique [0002] Composite silicone rubber insulator is a new material developed rapidly in recent years. With its light weight, excellent electrical insulation and weather resistance, it is gradually replacing traditional ceramic insulators. At present, the technology used for composite silicone rubber insulators is mainly compression molding, which has low efficiency. The injection molding composite silicone rubber insulator mainly solves the fluidity of the rubber compound, which can greatly improve the production efficiency, and at the same time, the quality of the product is also greatly improved. Hydroxy silicone oil produced by the domestic acetic anhydride method is slightly acid...

Claims

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Application Information

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IPC IPC(8): C08L83/00C08K5/5425B29B7/00C08K3/36C08K3/22
Inventor 陈江明朱德洪祝纪才吴国伟何佰祥徐连英
Owner JIANGSU HONGDA NEW MATERIAL
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