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Organosilicon graphene industrial coating and preparation method thereof

A technology of organosilicon and graphene, applied in the direction of coating, etc., can solve the problems of insufficient mechanical strength, limited application range, large internal stress, etc., and achieve the effect of simple production process, economical and reasonable

Inactive Publication Date: 2022-04-08
GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the coating film of silicone resin has poor resistance to organic solvents, poor adhesion to the substrate, insufficient mechanical strength, large internal stress, easy to produce cracks, weak bending performance and impact resistance, and is not resistant to scratches, etc. limits its scope of application

Method used

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  • Organosilicon graphene industrial coating and preparation method thereof
  • Organosilicon graphene industrial coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Preparation of modified silicone resin.

[0025] Step S1. Fully mix the silicone polymer, diisocyanate, and graphene oxide, add toluene and 0.5% stannous octoate accounting for the total weight of the reaction solution, and heat up to 110° C. for 2 hours to obtain a copolymer;

[0026] Step S2. Add 4-methoxystyrene, butadiene and benzoyl peroxide to the copolymer prepared in step S1, heat up to 110° C. and react for 1 hour to obtain a modified silicone resin;

[0027] The weight ratio of the organosilicon polymer, diisocyanate, graphene oxide, 4-methoxystyrene, butadiene, and benzoyl peroxide is 1:0.01:0.2:0.1:0.1:0.001.

Embodiment 2

[0028] Example 2: Preparation of modified silicone resin.

[0029] Step S1. Fully mix the silicone polymer, diisocyanate, and graphene oxide, add ethyl acetate and dibutyltin dilaurate accounting for 1% of the total weight of the reaction solution, heat up to 70° C. and react for 2 hours to obtain a copolymer;

[0030] Step S2. Add 4-methoxystyrene, butadiene and azobisisobutyronitrile to the copolymer prepared in step S1, heat up to 70° C. and react for 1 hour to obtain a modified silicone resin;

[0031] The weight ratio of the organosilicon polymer, diisocyanate, graphene oxide, 4-methoxystyrene, butadiene and azobisisobutyronitrile is 1:0.02:0.25:0.2:0.2:0.002.

Embodiment 3

[0032] Example 3: Preparation of modified silicone resin.

[0033] Step S1. Fully mix the silicone polymer, diisocyanate, and graphene oxide, add toluene and dibutyltin dilaurate accounting for 2% of the total weight of the reaction solution, and heat up to 110° C. for 2 hours to obtain a copolymer;

[0034] Step S2. Add 4-methoxystyrene, butadiene and benzoyl peroxide to the copolymer prepared in step S1, heat up to 110° C. and react for 1 hour to obtain a modified silicone resin;

[0035] The weight ratio of the organosilicon polymer, diisocyanate, graphene oxide, 4-methoxystyrene, butadiene, and benzoyl peroxide is 1:0.03:0.3:0.3:0.3:0.003.

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PUM

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Abstract

The invention discloses an organic silicon graphene industrial coating and a preparation method thereof. The organic silicon graphene industrial coating comprises 40-60% of modified organic silicon resin; the modified organic silicon resin is formed by polymerizing an organic silicon polymer, diisocyanate, graphene oxide, 4-methoxystyrene, butadiene and a free radical initiator according to the weight ratio of 1: (0.01 to 0.03): (0.2 to 0.3): (0.1 to 0.3): (0.1 to 0.3): (0.001 to 0.003). The graphene oxide is introduced into organic silicon polymer molecules, so that the scratch resistance and the mechanical strength of the organic silicon resin are enhanced, and the bending property and the impact resistance of the organic silicon resin are improved; a flexible chain segment cis-1, 4-polybutadiene is introduced, so that the internal stress of the organic silicon resin is reduced, and cracks are reduced; a rigid chain segment poly (4-methoxystyrene) is introduced, so that the bending property and the impact resistance of the organic silicon resin are improved.

Description

technical field [0001] The invention belongs to the field of industrial coatings, in particular to an organic silicon graphene industrial coating and a preparation method thereof. Background technique [0002] Graphene is a carbon atom with sp 2 The honeycomb planar film formed by hybridization is a quasi-two-dimensional material with only one atomic layer thickness, so it is also called single atomic layer graphite. Its thickness is about 0.335nm, and there are different fluctuations depending on the preparation method. Usually, the height in the vertical direction is about 1nm, and the width in the horizontal direction is about 10nm to 25nm. It is all carbon crystals except diamond (zero-dimensional fullerene , one-dimensional carbon nanotubes, three-dimensional bulk graphite) basic structural unit. [0003] Silicone resin refers to polyorganosiloxane with highly cross-linked network structure, which belongs to thermosetting resin. Silicone resin has -Si-O-Si- as the mo...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D7/61C08F283/00C08F212/14C08F236/10C08G18/61
Inventor 周伟建戴海雄周波马庆磊张旭林蛟符传杰
Owner GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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