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Polystyrene-resin-based composite material and preparation method thereof

A technology of polystyrene resin and composite materials, which is applied in the field of materials, can solve problems such as shortage and increased brittleness of polystyrene composite materials, and achieve the effects of inhibiting agglomeration, excellent mechanical properties and thermal properties, and promoting dispersion

Active Publication Date: 2016-05-18
黑龙江昆和新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] On the other hand, although the conductivity, thermal properties and mechanical strength of polystyrene and graphene composites have been improved compared with pure polystyrene, the brittleness of polystyrene composites has also increased. There are obvious deficiencies in the popularization and use of ethylene and graphene composite materials

Method used

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  • Polystyrene-resin-based composite material and preparation method thereof
  • Polystyrene-resin-based composite material and preparation method thereof
  • Polystyrene-resin-based composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Preparation of graphite oxide: Add 115mL of 98% concentrated sulfuric acid into a dry beaker, cool it to below 4°C with an ice-water bath, add 5g of natural graphite powder and 2.5g of NaNO under vigorous stirring 3 The mixture, and then slowly add 15gKMnO 4 , and control the temperature of the reaction system below 20°C (above 15°C), continue to stir the reaction for 5 minutes and raise the temperature of the system to 35±3°C, stir at constant temperature for 30 minutes and add 230mL of deionized water under vigorous stirring. Transfer the above system to a heated oil bath, control the reaction temperature of the system at about 98°C, keep it for 15 minutes, then add 355mL hot deionized water for high-temperature hydrolysis, add 30mLH 2 o 2 Neutralize the unreacted strong oxidant, suction filter while it is hot and wash with dilute hydrochloric acid, then wash the solution with a large amount of water until it is neutral, then filter, and dry the obtained filter cake ...

Embodiment 2

[0065] The preparation of graphite oxide and the preparation method of silane coupling agent functionalized graphene PAS-GO filler are the same as in Example 1. During the preparation of the composite material, 0.15gPAS-GO, 4.5gPOE-g-MAH and 25.35gPS were melt blended in the same process as in Example 1 to obtain a composite material with a mass percentage of 0.5% of the filler . The test sample preparation and test conditions of the composite material are the same as in Example 1, and the results are shown in Table 1. It can be seen that compared with the POE-g-MAH / PS blend, the tensile strength and impact strength of the composite obtained by adding silane coupling agent functionalized graphene PAS-GO have been improved to a certain extent, respectively. 8.3% and 11.7%.

Embodiment 3

[0067] The preparation of graphite oxide and the preparation method of silane coupling agent functionalized graphene PAS-GO filler are the same as in Example 1. In the preparation process of the composite material, 0.225gPAS-GO, 4.5gPOE-g-MAH and 25.275gPS were melt blended in the same process as in Example 1 to obtain a composite with a mass percentage of 0.75%. Material. The test sample preparation and test conditions of the composite material are the same as in Example 1, and the results are shown in Table 1. It can be seen that compared with the POE-g-MAH / PS blend, the tensile strength and impact strength of the composite obtained by adding silane coupling agent functionalized graphene PAS-GO have been improved to a certain extent, respectively. 9.6% and 20.2%. The thermal performance test results are shown in Table 2. It can be seen that compared with POE-g-MAH / PS blends, the thermal properties of polystyrene resin-based nanocomposites obtained by functionalizing graph...

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Abstract

The invention provides a polystyrene-resin-based composite material and a preparation method thereof and belongs to the field of materials. The polystyrene-resin-based composite material is prepared from polystyrene resin serving as a base body, a graphene sheet functionally modified by a silane coupling agent and serving as filler and elastomer POE-g-MAH serving as flexibilizer through a melt blending method. The elastic strength, the tensile strength and the elasticity modulus of the polystyrene-resin-based composite material are remarkably improved compared with polystyrene resin.

Description

technical field [0001] The invention relates to the field of materials, in particular to the melt blending modification of polystyrene resin, silane coupling agent functionalized modified graphene, and elastomer POE-g-MAH. Background technique [0002] Polystyrene (PS) has been widely used due to its excellent properties such as high transparency, flame retardancy, easy processing and low price. However, the low thermal deformation temperature, brittleness and poor impact properties of PS limit the application of PS in some fields. In order to broaden the application field of PS and increase the added value of PS, it is the main research direction of PS to implement toughening modification. [0003] The traditional PS toughening method is to use rubber-like elastomer as a toughening agent. Although it can improve the impact performance of PS, it will lead to a decrease in modulus and glass transition temperature at the same time. However, when PS is blended with ordinary p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L51/06C08K9/06C08K3/04
CPCC08L25/06C08L2201/08C08L51/06C08K9/06C08K3/04
Inventor 卞军蔺海兰周强肖文强周醒王正君
Owner 黑龙江昆和新材料科技有限公司
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