Graphene-based polyurethane composite preparation method

An alkenyl polyurethane and composite material technology, applied in the field of composite materials, can solve the problems of single function, unable to meet application requirements, low strength, etc., and achieve the effects of excellent comprehensive performance, good application value, and improved low strength

Inactive Publication Date: 2016-08-24
SUZHOU FAST INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Polyurethane foam materials are widely used in the preparation of pillows, mattresses, cushions, back cushions, sofas, waist support, insoles, car seats, toilet seat cushions or hand warmers, etc. However, the general functi...

Method used

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  • Graphene-based polyurethane composite preparation method

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Embodiment 1

[0021] The preparation method of graphene-based polyurethane composite material, its step is as follows:

[0022] Step 1, prepare graphene oxide according to the Hummers method, ultrasonically disperse graphene oxide in a mixed solution of ethylene glycol and water with a volume ratio of 1:2, make a graphene oxide solution with a concentration of 2 mg / ml, and adjust the pH value of the solution To 10, add polyvinyl alcohol, molybdenum disulfide, vinyl tri-n-butoxysilane, octadecyltrimethylammonium bromide and N-methylpyrrolidone solution, stir evenly, then add isocyanate and vitamin C at 85 ℃ for 8 hours, alternately washed with deionized water and absolute ethanol until neutral, and freeze-dried to obtain modified graphene; the graphene oxide, polyvinyl alcohol, molybdenum disulfide, vinyl tri-n-butoxy The molar ratio of silane, octadecyltrimethylammonium bromide, N-methylpyrrolidone, isocyanate and vitamin C is 1:0.2:1.3:0.1:0.6:15:0.4:0.7;

[0023] Step 2, diphenylmethan...

Embodiment 2

[0026] The preparation method of graphene-based polyurethane composite material, its step is as follows:

[0027] Step 1, prepare graphene oxide according to the Hummers method, ultrasonically disperse graphene oxide in a mixed solution of ethylene glycol and water with a volume ratio of 3:5, and prepare a graphene oxide solution with a concentration of 20mg / ml, and adjust the pH value of the solution For 13, add polyvinyl alcohol, molybdenum disulfide, vinyl tri-n-butoxysilane, octadecyltrimethylammonium bromide and N-methylpyrrolidone solution, stir evenly, then add isocyanate and vitamin C at 110 react at ℃ for 20 hours, alternately wash with deionized water and absolute ethanol until neutral, and freeze-dry to obtain modified graphene; the graphene oxide, polyvinyl alcohol, molybdenum disulfide, vinyl tri-n-butoxy The molar ratio of silane, octadecyltrimethylammonium bromide, N-methylpyrrolidone, isocyanate and vitamin C is 4:0.5:1.8:0.8:1.2:22:1.3:1.6;

[0028] Step 2,...

Embodiment 3

[0031] The preparation method of graphene-based polyurethane composite material, its step is as follows:

[0032] Step 1, prepare graphene oxide according to the Hummers method, ultrasonically disperse graphene oxide in a mixed solution of ethylene glycol and water with a volume ratio of 2:3.5, and prepare a graphene oxide solution with a concentration of 11mg / ml, adjust the pH value of the solution For 12, add polyvinyl alcohol, molybdenum disulfide, vinyl tri-n-butoxysilane, octadecyltrimethylammonium bromide and N-methylpyrrolidone solution, stir evenly, then add isocyanate and vitamin C at 98 react at ℃ for 14 hours, alternately wash with deionized water and absolute ethanol until neutral, and freeze-dry to obtain modified graphene; the graphene oxide, polyvinyl alcohol, molybdenum disulfide, vinyl tri-n-butoxy The molar ratio of silane, octadecyltrimethylammonium bromide, N-methylpyrrolidone, isocyanate and vitamin C is 2.5:0.3:1.5:0.5:0.9:18:0.8:1.2;

[0033]Step 2, d...

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Abstract

The invention discloses a graphene-based polyurethane composite preparation method. The method includes: dispersing graphene oxide, regulating pH, adding polyvinyl alcohol, molybdenum disulfide, vinyltributoxysilane, octadecyl trimethyl ammonium bromide and N-methyl-2-pyrrolidone, well stirring, adding isocyanate and vitamin C, and performing heating reaction to obtain modified graphene; adding diphenyl methane diisocyanate, naphthalene-1,5-diisocyanate, polycaprolactone polyalcohol, polypropylene oxide polyalcohol and polyoxalic acid-1,4-butanediol ester into dichloromethane and n-butyl acetate, heating for dissolution, adding 3,3'-dichloro-4,4'-diaminodiphenyl methane, 4-acetaminosalicylic acid, tetraglycidyl diaminodiphenylmethane and glycerin, well stirring, adding modified graphene and octyltin mercaptide, and reacting to obtain products; putting the products on a flat plate, drying, and performing film stripping to obtain a graphene-based polyurethane composite. The graphene-based polyurethane composite prepared according to the method has excellent comprehensive performances and promising application prospect.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a preparation method of graphene-based polyurethane composite materials. Background technique [0002] The full name of polyurethane is polyurethane, which is a general term for macromolecular compounds containing repeated carbamate groups in the main chain. It is formed by addition polymerization of organic diisocyanate or polyisocyanate and dihydroxy or polyhydroxy compounds. Polyurethane foam materials are widely used in the preparation of pillows, mattresses, cushions, back cushions, sofas, waist support, insoles, car seats, toilet seat cushions or hand warmers, etc. However, the general function of the existing polyurethane foam materials is single, Moreover, the strength is not high, and the heat resistance, water resistance, antistatic, flame retardant and other properties are poor, which cannot meet the growing application needs of people. [0003...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/66C08G18/42C08G18/48C08G18/32C08K9/06C08K9/04C08K9/02C08K3/04
CPCC08G18/7671C08G18/4018C08G18/4202C08G18/4238C08G18/4277C08G18/48C08G18/6618C08G18/7678C08K3/04C08K9/02C08K9/04C08K9/06C08K9/08
Inventor 彭孝茹
Owner SUZHOU FAST INFORMATION TECH CO LTD
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