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Preparation of special modified graphene automobile finish polishing and grinding material as well as application thereof

A grinding material and graphene technology, applied in the field of materials, can solve the problems of losing excellent performance and restricting the application of graphene, and achieve the effects of easy acquisition, easy operation conditions and stable chemical structure

Inactive Publication Date: 2016-12-21
广州市新稀冶金化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Otherwise, these factors will lead to irreversible agglomeration of graphene to form massive aggregates, and even re-stacking into graphite, thus losing its excellent properties.
Undoubtedly, these problems severely restrict the application of graphene in concrete reinforcement and toughening.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation and application of a special modified graphene automotive paint surface polishing abrasive material specifically includes the following steps

[0037] 1) Add 500g of 100-mesh high-oriented pyrolytic graphite into 5L of concentrated sulfuric acid and stir for 2h at 0°C; then slowly add 75g of potassium persulfate, stir for 3h at 20°C, then raise the temperature to 40°C and stir for 24h, then slowly add 20L and stir 2h and then slowly add 0.9L mass fraction of 30% hydrogen peroxide to obtain 486g of graphene oxide;

[0038] 2) Add 480g of graphene oxide into 4L of thionyl chloride, reflux and stir at 80°C for 24h, then centrifuge, wash with acetone, and vacuum dry at room temperature for 12h to obtain 475g of graphene containing acid chloride groups on the surface;

[0039] 3) Add 470g of graphene containing acid chloride groups on the surface and 235g of 1,3-propanediamine to 2LN,N'-dimethylformamide respectively, stir at 80°C for 24h under the protection...

Embodiment 2

[0043] The preparation and application of a special modified graphene automotive paint surface polishing abrasive material specifically includes the following steps

[0044] 1) Add 1000g of 160-mesh high-oriented pyrolytic graphite into 10L of concentrated sulfuric acid and stir for 2 hours at 0°C; then slowly add 150g of potassium persulfate, stir for 3 hours at 20°C, then raise the temperature to 40°C and stir for 24 hours, then slowly add 20L and stir 2h and then slowly add 0.9L mass fraction of 30% hydrogen peroxide to obtain 990g of graphene oxide;

[0045] 2) Add 985g of graphene oxide into 7.90L of thionyl chloride, reflux and stir at 80°C for 30h, then centrifuge, wash with acetone, and vacuum dry at room temperature for 14h to obtain 980g of graphene containing acid chloride groups on the surface ;

[0046] 3) Add 980g of graphene containing acid chloride groups on the surface and 490g of 1,3-propanediamine to 2L N,N,-dimethylformamide respectively, stir at 80°C for ...

Embodiment 3

[0050] The preparation and application of a special modified graphene automotive paint surface polishing abrasive material specifically includes the following steps

[0051] 1) Add 1500g of highly oriented pyrolytic graphite to 15L of concentrated sulfuric acid and stir for 3 hours at 0°C; then slowly add 225g of potassium persulfate, stir for 3 hours at 22°C, then raise the temperature to 40°C and stir for 24 hours, then slowly add 20L and stir for 2 hours Slowly add 2.7L mass fraction again and be 30% hydrogen peroxide, obtain graphene oxide 1460g;

[0052] 2) Add 1455g of graphene oxide into 4L of thionyl chloride, reflux and stir at 80°C for 30h, then centrifuge, wash with acetone, and vacuum dry at room temperature for 12h to obtain 1445g of graphene containing acid chloride groups on the surface;

[0053] 3) Add 1435g of graphene containing acid chloride groups on the surface and 717.5g of 1,3-propanediamine to 2LN,N'-dimethylformamide respectively, stir at 80°C for 30h ...

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PUM

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Abstract

The invention discloses a preparation of a special modified graphene automobile finish polishing and grinding material as well as an application thereof. According to the invention, a solvent stripping method is employed, graphite flake stripped from highly oriented pyrolytic graphite (HOPG) is subjected to oxidation treatment to obtain graphene oxide, then graphene oxide and thionyl chloride are subjected to a reaction to obtain the graphene with the surface containing acyl chloride group, the graphene and 1,3-propane diamine, melamine, and a dihydric alcohol compound are subjected to a nucleophilic substitution reaction to obtain graphene with the surface containing hydroxy group, and the hydroxy content is 0.01-0.03%. The obtained modified graphene has good water solubility and is in favor of stable dispersion of graphene, the characteristic of the modified graphene is used for enabling the graphene to be conveniently mixed with the other grinding agent preparation materials, and uniform dispersion is carried out, and the obtained modified graphene is used for preparing the automobile finish polishing and grinding material. In addition, the preparation method has the advantages of easy satisfaction of operation condition, and easy acquisition of the raw materials, cost is effectively reduced, economic benefit is increased, and the method has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to the preparation and application of a special modified graphene automobile paint surface polishing abrasive material. Background technique [0002] In modern China, the material life has been greatly improved, and there are many vehicles for travel-cars, which has driven the car beauty industry, and inevitably abrasives have been widely used in the car industry. The main abrasives required for grinding are divided into physical cutting abrasives and chemical cutting abrasives according to their cutting methods. There are two kinds of physical cutting methods: pumice type and clay type. The clay type replaced the pumice type, and the cutting function is still there, but it is not as hard as the pumice stone. Under a certain amount of heat, the new friction material can become smaller or disappear through a chemical reaction. These new abrasives are suitable not onl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04C09K3/14
CPCC09K3/1436
Inventor 杨雪英陈建山钟学群刘民
Owner 广州市新稀冶金化工有限公司
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