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Polysiloxane/graphene oxide nano composite material for modifying silicon rubber and modification method thereof

A technology of nanocomposite materials and polysiloxane, applied in the field of functional polymer materials, can solve unsolved problems such as the compatibility of graphene and silicone rubber, and achieve enhanced mechanical properties, increased reaction time, and high degree of oxidation Effect

Inactive Publication Date: 2019-03-22
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these studies did not surface-treat graphene, and the compatibility of graphene and silicone rubber has not yet been resolved.

Method used

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  • Polysiloxane/graphene oxide nano composite material for modifying silicon rubber and modification method thereof
  • Polysiloxane/graphene oxide nano composite material for modifying silicon rubber and modification method thereof
  • Polysiloxane/graphene oxide nano composite material for modifying silicon rubber and modification method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment first prepares polysiloxane / graphene oxide nanocomposite material according to the following steps:

[0041] Add graphene oxide flakes into deionized water and disperse uniformly by ultrasonic to obtain a graphene oxide dispersion with a concentration of 0.15 g / mL; the graphene oxide dispersion and methyl vinyl siloxane are mixed in a mass ratio of 1:10 Pour it into a three-necked flask, stir mechanically at a speed of 700rpm for 20min under ice bath conditions, then add ammonia water dropwise to adjust the pH to 10, and then mechanically stir at a speed of 350rpm for 15min; after the stirring is completed, transfer to a water bath at 40°C, Mechanically stir the reaction at 350rpm for 24 hours; after the reaction, wash the product three times with deionized water, centrifuge at 2000rpm for 10 minutes to take the upper layer, and finally dry the product in a vacuum oven at 60°C to obtain polysiloxane alkanes / graphene oxide nanocomposites.

[0042] Then, ...

Embodiment 2

[0048] This embodiment prepares the polysiloxane / graphene oxide nanocomposite material and the polysiloxane / graphene oxide modified methyl vinyl silicone rubber composite material based on it according to the same method as in Example 1, the difference is only: When it is resistant, the amount of polysiloxane / graphene oxide is 0.5 parts, which accounts for 0.5% of the mass of methyl vinyl silicone rubber.

Embodiment 3

[0050] This embodiment prepares the polysiloxane / graphene oxide nanocomposite material and the polysiloxane / graphene oxide modified methyl vinyl silicone rubber composite material based on it according to the same method as in Example 1, the difference is only: When it is resistant, the amount of polysiloxane / graphene oxide is 1 part, which accounts for 1% of the mass of methyl vinyl silicone rubber.

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Abstract

The invention discloses a polysiloxane / graphene oxide nano composite material for modifying silicon rubber and a modification method thereof. The composite material is obtained by enabling methyl vinyl terminated polysiloxane particles to grow on the surface of graphene oxide and used for modifying methyl vinyl silicon rubber, so that the mechanical properties and heat-resisting performance of themethyl vinyl silicon rubber can be improved.

Description

technical field [0001] The invention belongs to the field of functional polymer materials, and in particular relates to a polysiloxane / graphene oxide nanocomposite material used for modifying silicone rubber and a modification method thereof. Background technique [0002] Methyl vinyl silicone rubber (MVQ) is a special synthetic rubber, the main chain of the molecule is Si-O chain, and the side group is an organic group. It has high and low temperature resistance, weather resistance, ozone resistance, radiation resistance, insulation and biological properties. Excellent compatibility and other characteristics, it is widely used in aerospace, electronic appliances, automobile manufacturing, medical and health and other fields. However, the unreinforced MVQ has poor physical properties and has no practical use value, so it must be reinforced. [0003] Graphene nanocomposites are one of the fastest research and application fields of graphene. Introducing graphene into silicone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08K3/04
CPCC08L83/04C08L2201/08C08L2205/025C08L2205/03C08K3/042
Inventor 周艺峰张震陈鹏鹏聂王焰徐颖
Owner ANHUI UNIVERSITY