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Graphene in-situ modified epoxy SBS resin and preparation method thereof

An in-situ modification and graphene technology, applied in the field of SBS resin, can solve the problems of secondary agglomeration, yellowing, poor aging resistance, etc., and achieve good mechanical properties

Active Publication Date: 2021-10-19
江苏江山红化纤有限责任公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it also has some defects. For example, SBS has poor aging resistance and is sensitive to light, heat and oxygen. Especially under ultraviolet light, yellowing and crosslinking will occur, which will affect its processing and use. This is mainly because There are a large number of carbon-carbon unsaturated double bonds in the structure of SBS resin caused by
[0004] CN 104448868 A discloses a graphene oxide-based SBS modified asphalt and its preparation method. Graphene oxide powder is added to SBS modified asphalt to obtain good high temperature stability, high temperature rutting resistance and low temperature crack resistance , fatigue resistance and water stability, but the graphene oxide powder is difficult to disperse evenly in the matrix, and the phenomenon of secondary agglomeration

Method used

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  • Graphene in-situ modified epoxy SBS resin and preparation method thereof

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preparation example Construction

[0034] The preparation method of graphene in-situ modification epoxy SBS resin, this preparation method comprises:

[0035] The first step, the preparation of amino-functionalized graphene:

[0036] Ultrasonic dispersion of graphene oxide powder in a certain volume of benign solvent;

[0037] Slowly add diamine compounds with a mass ratio of 1:0.1-10 to the graphene oxide dispersion, and reflux at a temperature of 40-150°C for a reaction time of 2-48 hours to obtain a black dispersion;

[0038] After fully washing the obtained black dispersion with absolute ethanol, vacuum-dry and pulverize to obtain amino-functionalized graphene powder; the second step, the preparation of graphene in-situ modified epoxy SBS resin:

[0039] Dissolve epoxy SBS resin in a benign solvent,

[0040] Add the amino-functionalized graphene into the solution, disperse evenly by ultrasonic, then reflux reaction at a temperature of 40-120°C, the reaction time is 2-48h, and a black liquid with a certain...

Embodiment 1

[0059] The first step, preparation of amino-functionalized graphene:

[0060] Weigh 0.5g graphene oxide and ultrasonically disperse it in 1000mL water, the concentration of graphene oxide is 0.5mg / mL;

[0061] Weigh 0.25g of ethylenediamine, slowly add it to the graphene oxide dispersion, and react at 80°C for 24h to obtain a black dispersion;

[0062] After fully washing the obtained black dispersion with absolute ethanol, vacuum drying and pulverization obtains amino-functionalized graphene powder;

[0063] The second step, graphene in situ modified epoxy SBS resin:

[0064] Weigh 0.2g of epoxy SBS resin and dissolve it in 400ml of dichloromethane, the concentration of epoxy SBS resin is 0.5mg / mL; weigh 0.006g of amino functionalized graphene, add it to the dichloromethane of epoxy SBS resin In the methane solution, ultrasonically disperse evenly, and reflux at 70°C for 24 hours to obtain a black liquid with a certain viscosity;

[0065] The obtained black liquid was sett...

Embodiment 2

[0067] The first step, preparation of amino-functionalized graphene:

[0068] Weigh 0.2g graphene oxide and ultrasonically disperse it in 200mL N,N-dimethylformamide, the concentration of graphene oxide is 1mg / mL;

[0069] Weigh 0.2 g of 1,6-hexamethylenediamine, slowly add it to the graphene oxide dispersion, and react at 130°C for 8 hours to obtain a black dispersion;

[0070] After fully washing the obtained black dispersion with absolute ethanol, vacuum drying and pulverization obtains amino-functionalized graphene powder;

[0071] The second step, graphene in situ modified epoxy SBS resin:

[0072] Weigh 0.2g of epoxy SBS resin and dissolve it in 250ml of cyclohexane, the concentration of epoxy SBS resin is 0.8mg / mL;

[0073] Weigh 0.002g of amino-functionalized graphene, add it to the cyclohexane solution of epoxy SBS resin, ultrasonically disperse it evenly, and reflux at 100°C for 8 hours to obtain a black liquid with a certain viscosity;

[0074] The obtained black...

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Abstract

The invention relates to the technical field of polymers, in particular to a graphene in-situ modified epoxy SBS resin and a preparation method thereof. The raw materials of graphene in-situ modified epoxy SBS resin include graphene and epoxy SBS resin, graphene is amino functionalized graphene; epoxy SBS resin is obtained by epoxidizing SBS resin under certain conditions, and is thermoplastic Elastomeric polystyrene-butadiene-styrene block copolymer. Amination modification is carried out on graphene oxide, primary amino groups are introduced on its surface, and the purpose of graphene in-situ modification of epoxy SBS resin is achieved through the reaction with epoxy groups on epoxy SBS resin. In this way, a stable covalent bond is formed between graphene and SBS, and the good physical and mechanical properties of graphene-based materials are used to enhance the molecular chain of epoxy SBS, thereby showing good mechanical properties.

Description

technical field [0001] The invention relates to a SBS resin, in particular to a graphene in-situ modified epoxy SBS resin and a preparation method thereof. Background technique [0002] Graphene has become a popular material for research and application in recent years due to its advantages of high strength, high thermal conductivity, high electrical conductivity, and chemical stability. Since graphene is a highly regular two-dimensional carbon structure material, its surface does not contain active functional groups and is chemically inert; while graphene oxide is obtained by oxidizing and exfoliating graphite, while maintaining the excellent properties of graphene, the surface is connected There are a variety of active oxygen-containing functional groups, such as hydroxyl, carboxyl, epoxy, etc. These functional groups can provide reactive sites, so that graphene oxide has strong chemical activity and provides the possibility for the preparation of functional graphene. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/02C08K9/04C08K3/04
CPCC08K9/04C08K3/042C08L53/025
Inventor 马宏明曹建鹏姜文静周良艳陆芳赵畅万元俊刘雪静周露
Owner 江苏江山红化纤有限责任公司
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