Preparation method of graphene/waste polyurethane composite material

A composite material, graphene technology, applied in the direction of plastic recycling, recycling technology, etc., can solve the problems of black material consumption, long time, secondary pollution and so on

Active Publication Date: 2021-08-20
山东东特环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method of graphene-modified polyurethane foam in this patent uses isocyanate to modify graphene first, and then adds it, which consumes black materials, takes a long time, and uses various harmful organic solvents, such as toluene, acetone, etc. Post-processing will cause secondary pollution and pollute the environment

Method used

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  • Preparation method of graphene/waste polyurethane composite material
  • Preparation method of graphene/waste polyurethane composite material
  • Preparation method of graphene/waste polyurethane composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A kind of preparation method of graphene / waste and old polyurethane composite material, comprises the following steps:

[0049] (1) Mix 0.5g of graphene oxide with 30g of butanediol, 35g of hydroxyethyl cellulose, 10g of pentaerythritol and 35g of triethanolamine. After ultrasonic oscillation for 2 hours, add it to the reaction kettle, and add 100g of waste polyurethane foam. The mixture was stirred for 3 hours, and the degradation product polyol was obtained after cooling to room temperature.

[0050] (2) Stir 30g of degradation product polyol with 0.2g of triethanolamine, 15g of HCFC-141b, 0.2g of organic selenium, and 3g of silicone oil CGY-5 and use it as a white material, then stir with 49.40g of PAPI-27 for 18s to make it foam, After cooling, a hard polyurethane material is obtained.

Embodiment 2

[0052] A kind of preparation method of graphene / waste and old polyurethane composite material, comprises the following steps:

[0053] (1) 0.5g graphene oxide is mixed with 30g1,2-propanediol, 35g hydroxyethyl cellulose, 10g pentaerythritol and 35g triethanolamine, after ultrasonic vibration 2h, add in the reactor, and add 100g waste polyurethane foam, in 180 Stirring at ℃ for 4.5 hours, cooling to room temperature to obtain the degradation product polyol.

[0054] (2) After mixing 20g of degradation product polyol with 10g of polyester polyol, 0.2g of isosorbide, 15g of antimony trioxide, 0.2g of tris(dimethylaminopropyl)hexahydrotriazine, and 3g of silicone oil CGY-5 As a white material, it was stirred with 48.50g of PAPI-27 for 15s to make it foam, and cooled to obtain a rigid polyurethane material.

Embodiment 3

[0056] A kind of preparation method of graphene / waste and old polyurethane composite material, comprises the following steps:

[0057] (1) Mix 0.5g of graphene oxide with 30g of 1,2-propanediol, 35g of 1,2-cyclopentadiol, 10g of pentaerythritol and 35g of diethanolamine, after ultrasonic oscillation for 2h, add to the reaction kettle, and add 100g of waste polyurethane foam, Stir at 150° C. for 4.5 hours, and cool to room temperature to obtain the degradation product polyol.

[0058] (2) Stir 25g of degradation product polyol with 5g of polyester polyol, 0.3g of glycerin, 15g of HCFC-141b, 0.2g of titanium glycol, and 3g of silicone oil L-600 as a white material, and then mix it with 48.20g of PAPI-27 Stir for 20s to make it foam, and cool to obtain a rigid polyurethane material.

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Abstract

The invention belongs to the technical field of waste polyurethane recovery and reutilization, and particularly relates to a preparation method of a graphene / waste polyurethane composite material. According to the method disclosed by the invention, the waste polyurethane rigid foam subjected to crushing and a polyol, graphene oxide and additive blending system meeting different functional requirements are degraded and recycled according to a certain proportion for reutilization, and the graphene oxide / waste polyurethane composite material with excellent performance is prepared by utilizing a degradation product. The material has good thermal stability, thermal insulation performance and the like, and the apparent density, the compression strength, the water absorption rate and the like are all higher than national standards. In the recovery process, three wastes are not discharged, the method is green and environment-friendly, the recovery utilization rate of the waste polyurethane is close to 100%, and the degradation product can be directly utilized without subsequent treatment, so that the cost of the polyurethane rigid foam product is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of recycling and reusing waste polyurethane, and in particular relates to a preparation method of graphene / waste polyurethane composite material. Background technique [0002] Polyurethane material is a kind of multi-purpose synthetic resin that can be thermoset and multi-form. Its products have various forms, including foam plastics, elastomers, coatings, adhesives, fiber materials, etc. Among them, polyurethane foam is the largest variety of polyurethane synthetic products, and with an average annual growth rate of 15%, it is one of the fastest-growing varieties in the modern plastics industry. Polyurethane foam can be divided into three types according to its hardness: polyurethane soft foam, rigid foam and semi-rigid foam. Plastic polyurethane soft foam is mainly used for filling furniture, automobiles, etc., polyurethane rigid foam is mainly used for thermal insulation of home appliances, walls, pipes,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/14C08J11/24C08L75/06C08L75/08C08K3/04
CPCC08J9/144C08J9/141C08J9/0066C08J11/24C08J2203/142C08J2203/14C08J2375/06C08J2375/08Y02W30/62
Inventor 顾晓华龚子龙罗鸿翔刘吉锋刘思雯
Owner 山东东特环保科技有限公司
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