Modified graphene composite polyethylene material and preparation method thereof

A graphene composite and polyethylene technology, which is applied in the field of modified graphene composite polyethylene materials and its preparation, can solve the problems affecting the application performance of composite materials, difficult antistatic performance, easy agglomeration, etc., and achieve excellent antistatic effect , Improve lipophilicity, enhance the effect of mechanical strength

Inactive Publication Date: 2019-12-31
GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process steps of directly compounding graphene and polyethylene substrate are simple, but because the surface of graphene is poorly bonded to polyethylene, and because graphene surface atoms have high surface energy and surface binding energy, the dispersion is poor and easy to Form large agglomerates, which are easy to agglomerate when used as a reinforcing material for a polyethylene matrix, resulting in a low degree of dispersion of graphene in the polyethylene matrix, which in turn affects the application performance of the composite material, and it is not easy to obtain stable and good antistatic properties. Modified polyethylene material

Method used

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  • Modified graphene composite polyethylene material and preparation method thereof
  • Modified graphene composite polyethylene material and preparation method thereof
  • Modified graphene composite polyethylene material and preparation method thereof

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preparation example Construction

[0028] The present invention also provides a kind of preparation method of modified graphene composite polyethylene material, comprises the following steps:

[0029] S1: reflux the graphene and the coupling agent in an organic solvent for 80-120 minutes, and then remove the organic solvent to obtain organically modified graphene;

[0030] Preferably, the mass ratio of the coupling agent to graphene is 1:1˜2:1. The organic solvent is an alcoholic organic solvent, at least one selected from methanol, ethanol or isopropanol.

[0031] S2: Disperse organically modified graphene in deionized water, and mix uniformly to obtain organically modified graphene dispersion;

[0032] Preferably, the concentration of the organically modified graphene dispersion is 0.3-0.8 g / L.

[0033] S3: Mix the organically modified graphene dispersion, polyethylene, compatibilizer, and dispersant, and discharge to obtain a modified graphene composite polyethylene mixture;

[0034] S4: Melt the modified...

Embodiment 1

[0039] Embodiment 1 provides a kind of modified graphene composite polyethylene material, and it is made up of the component of following parts by weight:

[0040] 75 parts of linear low density polyethylene, 0.5 parts of graphene, 0.5 parts of silane coupling agent, 4 parts of maleic anhydride grafted EVA, 0.8 parts of polyethylene wax, 2 parts of polymerized aluminum iron bis-acid, butyl hydroxyanisole and tert-butylhydroquinone, 3 parts in total.

[0041] The preparation method of above-mentioned modified graphene composite polyethylene material comprises the following steps:

[0042] S1: reflux graphene and silane coupling agent in methanol for 80 minutes at a mass ratio of 1:1, and then remove the organic solvent to obtain organically modified graphene;

[0043] S2: Disperse organically modified graphene in deionized water, and mix uniformly to obtain organically modified graphene dispersion;

[0044] S3: Mix the organically modified graphene dispersion, linear low dens...

Embodiment 2～3

[0049] The preparation steps of the modified graphene composite polyethylene material in Examples 2 to 3 are the same as in Example 1, the difference is that the weight ratio and operating parameters of each component are different, see Table 1 for details.

[0050] The weight ratio of each component and operating parameter list in table 1 embodiment 1-3

[0051]

[0052]

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Abstract

The invention provides a modified graphene composite polyethylene material, which comprises, by weight, 75-100 parts of polyethylene, 0.5-2 parts of graphene, 1-4 parts of a coupling agent, 4-10 partsof a compatilizer, 0.8-2 parts of a dispersing agent, 2-5 parts of a flocculating agent and 3-5 parts of a stabilizer. Compared with the method in the prior art, the method of the invention has the following characteristics that graphene is used as the antistatic agent and the reinforcing agent, and is organically modified with the coupling agent, the maleic anhydride grafted EVA is used as the toughening compatilizer to form the antistatic toughening and reinforcing system of the polyethylene material, and finally the polyethylene material obtains the stable physical and chemical propertiesthrough the flocculating agent and the stabilizer, so that the composite polyethylene material with good mechanical properties and good antistatic properties is prepared in the case of the feeding ofa small amount of the modifier.

Description

technical field [0001] The invention relates to a polymer material and a preparation method thereof, in particular to a modified graphene composite polyethylene material and a preparation method thereof. Background technique [0002] Polyethylene materials have excellent mechanical properties and processing properties, and at the same time have good comprehensive properties such as corrosion resistance, insulation, hygiene, and barrier properties. Therefore, polyethylene materials are widely used in industry, agriculture, medicine, hygiene and daily necessities, etc. field. [0003] Since polyethylene material is an insulating material, it is a poor conductor of electricity and is the root cause of static electricity accumulation and static electricity damage. Therefore, polyethylene materials are prone to generate and accumulate static electricity under friction, extrusion, etc., and the electrostatic voltage can be as high as 1000-2000V, which often causes electrostatic i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L51/06C08L23/06C08K9/06C08K3/04C08K5/13C08K13/06
CPCC08K2201/014C08L23/06C08L23/0815C08L2201/04C08L2205/025C08L2205/03C08L2205/035C08L2207/062C08L51/06C08K9/06C08K3/042C08K5/13C08K13/06C08L91/06C08K9/04C08K5/18
Inventor 杨波李茂东黄国家王志刚翟伟张双红李爽郭华超李悦黄敏文芳徐青永
Owner GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
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