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Long-acting antistatic silicone rubber/ionic liquid composite material and preparation method thereof

The technology of ionic liquid and composite material is applied in the field of long-acting antistatic silicone rubber/ionic liquid composite material and its preparation, which can solve the problems of lack of long-acting antistatic, antistatic property of silicone rubber or decreased electrical conductivity, etc. Achieve the effect of good mechanical properties, good stability and excellent comprehensive performance

Active Publication Date: 2018-04-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these ionic liquids are directly added to the silicone rubber matrix, and phase separation between them and the silicone rubber is easy to occur, that is, the ionic liquid is easy to migrate to the surface of the silicone rubber. As time goes on, the ionic liquid is continuously lost, so the silicone rubber The antistatic or conductivity will gradually decrease, so this antistatic silicone rubber does not have long-term antistatic function

Method used

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  • Long-acting antistatic silicone rubber/ionic liquid composite material and preparation method thereof
  • Long-acting antistatic silicone rubber/ionic liquid composite material and preparation method thereof
  • Long-acting antistatic silicone rubber/ionic liquid composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The proportion of each component of the long-acting antistatic silicone rubber / ionic liquid composite material is:

[0031]

[0032] Dissolve vinyl silicone oil with a viscosity of 200mPa·s and a vinyl content of 0.8mol% in toluene (the mass ratio of vinyl silicone oil to toluene is 1:4), add ionic liquid, and then add AIBN (vinyl silicone oil, ionic liquid The mass ratio of AIBN to AIBN is 100:5:1), stirred at 60°C for 24h, protected by nitrogen, evaporated toluene, and then returned to the reaction vessel after cooling with water to ensure that the amount of toluene remained basically unchanged. Vinyl silicone oil and ionic liquid The reaction product was washed with ethanol for 3 times, and then dried in an oven at 60° C. for 6 h to obtain vinyl silicone oil grafted 1-allyl-3-methylimidazolium bromide.

[0033] First, mix methyl vinyl silicone rubber, fumed silica and hydroxyl silicone oil in a rubber mill, then add vinyl silicone oil to graft 1-allyl-3-methylimid...

Embodiment 2

[0035] The proportion of each component of the long-acting antistatic silicone rubber / ionic liquid composite material is:

[0036]

[0037] Dissolve vinyl silicone oil with a viscosity of 200mPa·s and a vinyl content of 0.8mol% in xylene (the mass ratio of vinyl silicone oil to xylene is 1:8), add ionic liquid, and then add AIBN (vinyl silicone oil, The mass ratio of ionic liquid to AIBN is 100:5:1), stirred at 80°C for 12h, protected by nitrogen, evaporated xylene, and then refluxed to the reaction vessel after cooling with water to ensure that the amount of xylene remained basically unchanged. The reaction product of silicone oil and ionic liquid was washed with ethanol for 6 times, and then the product was dried in an oven at 100° C. for 2 h to prepare vinyl silicone oil grafted 1-allyl-3-methylimidazolium bromide.

[0038]First, mix methyl vinyl silicone rubber, fumed silica and hydroxyl silicone oil in a rubber mill, then add vinyl silicone oil to graft 1-allyl-3-methy...

Embodiment 3

[0040] The proportion of each component of the long-acting antistatic silicone rubber / ionic liquid composite material is:

[0041]

[0042] Dissolve vinyl silicone oil with a viscosity of 1000mPa·s and a vinyl content of 1.9mol% in carbon tetrachloride (the mass ratio of vinyl silicone oil to carbon tetrachloride is 1:5), add ionic liquid, and then add AIBN ( The mass ratio of vinyl silicone oil, ionic liquid and AIBN is 100:5:1), stirred at 65°C for 12h, protected by nitrogen, evaporated carbon tetrachloride, and then returned to the reaction vessel after cooling with water to ensure that carbon tetrachloride The dosage remains basically the same, the reaction product of vinyl silicone oil and ionic liquid is washed with ethanol for 3 times, and then the product is dried in an oven at 100°C for 2 hours to obtain vinyl silicone oil grafted 1-allyl-3-methylimidazole Bromide.

[0043] First, mix methyl vinyl silicone rubber, fumed silica and hydroxyl silicone oil in a rubber...

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Abstract

The invention discloses a long-acting antistatic silicone rubber / ionic liquid composite material and a preparation method thereof. The composite material comprises the following raw materials by masspercentage: 55-90% of silicone rubber raw rubber, 5-35% of a reinforcing agent, 1-5% of a structural control agent, 2-8% of vinyl silicone oil grafted ionic liquid, and 1-5% of a cross-linking agent.The long-acting antistatic silicone rubber / ionic liquid composite material has a small amount of the antistatic agent in a formula and has little effect on the mechanical properties, color, and transparency of the silicone rubber. The anti-static properties of the obtained silicone rubber composite material are stable. After one year, the resistivity of the composite material does not change significantly. The preparation method of the antistatic composite material of the invention is simple, safe and environment-friendly, and can be widely used in the fields of electronics, electrical, mechanical, chemical and other fields to prepare various elastic touch panels, buttons, sheaths, rubber rollers, and pouring sealants.

Description

technical field [0001] The invention relates to a silicone rubber mixture, in particular to a long-acting antistatic silicone rubber / ionic liquid composite material and a preparation method thereof. Background technique [0002] Silicone rubber has a stable -Si-O-main chain structure, showing excellent high and low temperature resistance, weather resistance, electrical insulation and physiological inertness, so silicone rubber is used in aviation, aerospace, electronics, electrical, chemical, mechanical, medical Widely used in other fields. Among them, in the electrical and electronic industry, silicone rubber is mainly used as buttons, sheaths, rubber rollers, insulators and potting glue. Since silicone rubber is an electrical insulating material, the volume resistivity is usually greater than 10 13 Ω·m, so silicone rubber is prone to static electricity when it is in frictional contact with other objects. For example, when the rubber roller of the printer rubs against th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L51/08C08L83/04C08K3/36C08K5/14C08K5/5419C08F283/12
Inventor 郭建华陈旭明曾幸荣叶希望
Owner SOUTH CHINA UNIV OF TECH
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