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Graphene EVA-g-MA foam damping material and preparation method of same

A damping material, graphene technology, applied in the field of automotive foam damping materials, can solve the problems of complex manufacturing process, affecting the foaming ratio, reducing product performance, etc., to achieve good product performance, high production efficiency, and increased compatibility Effect

Inactive Publication Date: 2017-09-15
常州碳润新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] How to reduce the noise inside the car is the goal of the automobile manufacturing industry. When the car is welded, there will be a large gap between the sheet metal and the sheet metal, such as the door, the pillar, etc., which will easily cause noise when the car is running. , it is necessary to seal and block noise; at present, the materials used in automobiles are mainly high-foaming rubber-plastic materials with multi-layer composite structures. Different, in the foaming process, they will restrict each other, affect the foaming ratio, and peel off between layers, so that the gaps cannot be filled, affect the overall sound insulation effect, and reduce product performance

Method used

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  • Graphene EVA-g-MA foam damping material and preparation method of same
  • Graphene EVA-g-MA foam damping material and preparation method of same
  • Graphene EVA-g-MA foam damping material and preparation method of same

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Embodiment 1

[0030] A composition of graphene EVA-g-MA foam damping material is calculated according to parts by weight:

[0031]

[0032]

[0033] Wherein, the VA amount of the ethylene-vinyl acetate resin is 14wt%;

[0034] Described maleic anhydride grafted EVA graft ratio is 1.5%;

[0035] The preparation method of described functionalized graphene is as follows:

[0036] (1) Using natural graphite powder as raw material, weigh 150-200g of graphite powder into two 2000mL PTFE ball milling tanks, the ball milling time is 240h, the ball milling speed is 500r / min, the ball milling operation mode: alternate, running time After the ball milling is completed with a ratio of 5:1 to the running interval, the obtained solid powder is graphene;

[0037] (2) Take graphene and dissolve it in DMF, ultrasonically disperse, add LiAlH slowly under magnetic stirring, the mass ratio of LiAlH and graphene is 1:4, then add initiator BPO (dibenzoyl peroxide), pass The addition amount of dibenzoyl ...

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Abstract

The invention belongs to the field of automobile foam damping materials and especially relates to a graphene composite foam damping material used for automobiles and a preparation method of same. The foam damping material is composed of ethylene-vinyl acetate resin (EVA), maleic anhydride grafted EVA (EVA-g-MA), a foamer, functionalized graphene, fumed silica, a foamer accelerant, a peroxidation crosslinker and a plasticizer. The damping peak value of the foam damping material is increased, so that the damping performance of the material is greatly improved.

Description

technical field [0001] The invention belongs to the field of foaming damping materials for automobiles, and mainly relates to a high-performance foaming damping material with graphene as a filler and a preparation method thereof, in particular to a preparation method of a graphene EVA-g-MA foaming damping material. Background technique [0002] How to reduce the noise inside the car is the goal of the automobile manufacturing industry. When the car is welded, there will be a large gap between the sheet metal and the sheet metal, such as the door, the pillar, etc., which will easily cause noise when the car is running. , it is necessary to seal and block noise; at present, the materials used in automobiles are mainly high-foaming rubber-plastic materials with multi-layer composite structures. Different, in the foaming process, they will restrict each other, affect the foaming ratio, and the phenomenon of peeling between layers will occur, so that the gaps cannot be filled, af...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08L51/06C08K13/06C08K3/36C08K9/02C08K3/04C08K5/12C08K5/14C08J9/10
CPCC08J9/103C08J2203/04C08J2323/08C08J2451/06C08L23/0853C08L2203/14C08L51/06C08K13/06C08K3/36C08K9/02C08K3/04C08K5/12C08K5/14
Inventor 陶宇仲崇盟翁亚楠
Owner 常州碳润新材料科技有限公司
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