Light-colored anti-static silicone rubber and preparation method thereof

An antistatic and silicone rubber technology, applied in the field of light-colored modified antistatic silicone rubber and its preparation, can solve the problems of excessively dark color and poor mechanical properties, and achieve light color, excellent antistatic properties, and good reinforcement. effect of effect

Active Publication Date: 2014-10-15
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in the prior art, antistatic silicone rubber products have the problems of poor mechanical properties and too dark color

Method used

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  • Light-colored anti-static silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Add 80.0 g of 2000-mesh flaky silicon micropowder into 60.0 g of water, and ultrasonically disperse it for 10 minutes while stirring to obtain a uniform slurry. After heating up to 60 ° C, add 10 ml of tin-antimony solution dropwise to the slurry while stirring ( SnCl 4 ·5H 2 O and SbCl 3 The mass ratio is 5:1, SnCl 4 ·5H 2 The concentration of O is 0.2g / ml), and then slowly add 1mol / L ammonia solution dropwise until the system pH = 1, after the dropwise addition, keep warm (60°C) for 20min; continue to add to the above slurry 30ml of the above-mentioned tin-antimony solution and 1mol / L ammonia solution, keep the pH of the system at 2, keep warm (60°C) and react for 10min, after the reaction is completed, filter the product with suction, wash, dry, and pulverize; then calcinate at 500°C for 3h , that is, the ATO / silica powder conductive composite material;

[0024] (2) Preparation steps of antistatic rubber: Add 100 g of raw methyl silicone rubber to the intern...

Embodiment 2

[0026] (1) Add 80.0 g of 10,000-mesh flaky silicon micropowder into 100.0 g of water, and ultrasonically disperse it for 15 minutes while stirring to obtain a uniform slurry. After heating up to 70 ° C, add 40 ml of tin-antimony solution dropwise to the slurry while stirring ( SnCl 4 ·5H 2 O and SbCl 3 The mass ratio is 8:1, SnCl 4 ·5H 2 The concentration of O is 0.4g / ml), and then slowly add 2mol / L NaOH solution dropwise until the system pH=1.5, after the dropwise addition is completed, keep warm (70°C) and react for 25min; continue to add the above-mentioned 120ml of tin antimony solution and 2mol / L NaOH solution, keep the system pH=3, keep warm (70°C) and react for 20min, after the reaction is completed, filter the product with suction, wash, dry and pulverize; then calcinate at 600°C for 2h, That is, the ATO / silica powder conductive composite material is obtained;

[0027] (2) Antistatic rubber preparation steps: Add 100 g of methyl vinyl silicone rubber raw rubber to...

Embodiment 3

[0029] (1) Add 80.0 g of 11000-mesh flaky silicon micropowder into 120.0 g of water, and ultrasonically disperse it for 20 minutes while stirring to obtain a uniform slurry. After heating up to 70 ° C, add 47 ml of tin-antimony solution dropwise to the slurry while stirring ( SnCl 4 ·5H 2 O and SbCl 3 The mass ratio of SnCl is 12.5:1, SnCl 4 ·5H 2 The concentration of O is 0.45g / ml), then slowly add 3.5mol / L NaOH solution dropwise until the system pH=2, keep warm (70°C) and react for 40min after the dropwise addition; continue to drip rapidly into the above slurry Add 140ml of the above-mentioned tin-antimony solution and 3.5mol / L NaOH solution, keep the pH of the system at 3.5, keep warm (70°C) and react for 25min, after the reaction is completed, filter the product with suction, wash, dry and pulverize; Calcined for 2 hours, the ATO / silicon powder conductive composite material is obtained;

[0030](2) Preparation steps of antistatic rubber: Add 100 g of raw methyl vinyl...

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Abstract

The invention belongs to the field of modification of rubber products and particularly relates to anti-static silicone rubber which takes conductive flaky silica powder as packing and a preparation method thereof. The preparation method comprises the steps as follows: firstly, enabling an Sn-Sb precursor to form a film on the surface of the silica powder slowly and evenly, and then evenly covering the surface of the silica powder with an Sn-Sb composite material through calcination; performing a series of operations such as closed mixing, open mixing and plate vulcanization on the silica powder with an Sn-Sb composite material coating layer, raw rubber and related packing to prepare the anti-static silicone rubber product. The anti-static silicone rubber prepared with the method is lighter in color and excellent in mechanical property and anti-static property.

Description

technical field [0001] The invention belongs to the field of modification of rubber products, and in particular relates to a light-color modified antistatic silicone rubber with conductive flake silicon micropowder as a filler and a preparation method thereof. Background technique [0002] Silicone rubber is a straight-chain polymer compound, which has the advantages of colorless, odorless, strong weather resistance, and good insulation. However, it is easy to generate static electricity during use, which brings great harm to production and life. Therefore, to perform antistatic treatment on silicone rubber, conductive fillers are usually added to silicone rubber to make it have antistatic effect. [0003] At present, the rubber conductive fillers mainly used mainly include carbon powder and metal powder. Carbon-based powders include graphite, carbon black, carbon fiber, etc., which have the advantages of better conductivity, good reinforcement effect, and low price; metal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L83/07C08L83/08C08K13/06C08K9/02C08K3/36C08K3/22C08K5/14B29C35/02
Inventor 罗士平潘玉乐姚超吴凤芹刘文杰左士祥
Owner CHANGZHOU UNIV
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