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Preparation method of graphene-PVC composite material

A composite material and graphene technology, applied in the field of graphene-PVC composite material preparation, can solve the problems of high production consumption, low regularity of composite resin particles, low utilization rate of free radical initiators, etc. The effect of reducing the investment in fixed assets and fully applying the potential of mass production

Active Publication Date: 2019-04-05
山东鲁泰控股集团有限公司石墨烯高分子复合材料研发中心 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The results show that directly adding particles to the suspension polymerization system leads to low particle regularity of the synthesized composite resin, and low oil-water ratio leads to low yield, low utilization rate of free radical initiator, high final production consumption and high product quality. not good

Method used

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  • Preparation method of graphene-PVC composite material
  • Preparation method of graphene-PVC composite material

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Embodiment 1

[0022] The object of the present invention is to provide a method for preparing graphene-PVC composite materials in one pot. The preparation process can start from relatively simple and easy-to-obtain raw materials, and directly obtain molecules with complex structures without separation of intermediates. Such preparation is obviously economically and environmentally friendly. The purpose of improving the performance of PVC composite materials by adding graphene oxide slurry.

[0023] The preparation steps of the present invention are as follows: adopt a 500ml three-necked round bottom flask, add 100 ml PVC slurry at room temperature, mechanically stir to make PVC particles evenly suspended in the water phase at 3500r / min for 10 min; add 80 ml GO slurry, Stir and mix uniformly at a speed of 700 r / min for 10 min; heat up to 80 o C, according to the mass ratio of GO to 4:1, add L-ascorbic acid, stir and react for 2 h; after the reaction, cool down to 50 oC Next, centrifuge at...

Embodiment 2

[0025] The object of the present invention is to provide a kind of one-pot method to prepare the method preparation step of graphene-PVC composite material and be: adopt 500ml three-necked round bottom flask, add 150 ml PVC slurry under room temperature, mechanical stirring makes PVC particle, evenly suspend 3500r / min in the water phase, time 10 min; add 80 ml GO slurry, stir and mix evenly, speed 700 r / min, time 10 min; heat up to 80 o C, according to the mass ratio of GO to 4:1, add L-ascorbic acid, stir and react for 2 h; after the reaction, cool down to 50 oC Next, centrifuge at a speed of 1000 r / min for 20 minutes or stand still for 24 hours; dry and sieve to obtain functionalized graphene / PVC resin.

Embodiment 3

[0027] The object of the present invention is to provide a kind of one-pot method to prepare the method preparation step of graphene-PVC composite material and be: adopt 500ml three-necked round-bottomed flask, add 200 ml PVC slurry under room temperature, mechanical stirring makes PVC particle, evenly suspend 3500r / min in the water phase, time 10 min; add 80 ml GO slurry, stir and mix evenly, speed 700 r / min, time 10 min; heat up to 80 o C, according to the mass ratio of GO to 4:1, add L-ascorbic acid, stir and react for 2 h; after the reaction, cool down to 50 oC Next, centrifuge at a speed of 1000 r / min for 20 minutes or stand still for 24 hours; dry and sieve to obtain functionalized graphene / PVC resin.

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Abstract

The invention relates to a method for preparing a graphene-PVC composite material through a one-pot process. The method includes: adopting a 500-ml three-necked round-bottom flask, adding PVC slurry at room temperature, and mechanically stirring to enable PVC particles to be uniformly suspended in an aqueous phase; adding GO slurry, and stirring and mixing well; rising temperature, adding L-ascorbic acid according to a certain mass ratio with GO, and stirring for reaction; after reaction is finished, cooling to below 50 DEG C, and centrifuging or standing; drying and screening to obtain functionalized graphene / PVC resin. Graphene oxide slurry and PVC slurry are used, so that aggregation of graphene and PVC is inhibited, dispersion is more uniform, and the graphene-PVC composite material has excellent antistatic and anti-tensile performance. The preparation method starts from raw materials, and high molecular polymer with complex structure is obtained directly without separating an intermediate. The whole preparation process is simple in operation, economical and environment-friendly. The method is suitable for industrial production.

Description

technical field [0001] The invention belongs to the field of polymer composite materials, and relates to a preparation method of graphene-PVC composite materials. Background technique [0002] Graphene is a two-dimensional nanomaterial, which is a single-layer two-dimensional material composed of carbon atoms connected by sp2 hybridization. Due to this special structure, graphene has many excellent properties that other nanomaterials do not have, such as extremely high mechanical strength, excellent electrical and thermal conductivity, and large specific surface area. These properties make graphene an ideal two-dimensional nanofiller for the preparation of high-performance polymer nanocomposites. It can improve the electrical conductivity, mechanical properties and thermal stability of the polymer, so that it has high application value in the field of polymer composite materials. As one of the five general-purpose plastics, polyvinyl chloride (PVC) is widely used in variou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K9/04C08K3/04
CPCC08K3/042C08K9/04C08L27/06
Inventor 闫业海申玉海王纲高虎朱峰云李乃朋冯继凡张成姚忠成高歌
Owner 山东鲁泰控股集团有限公司石墨烯高分子复合材料研发中心
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