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Graphene substance-modified elastomer material and preparation method thereof

An elastomer material and graphene technology, applied in the field of polyurea materials, can solve problems such as poor material compatibility and weak interface bonding ability, and achieve the effects of improving mechanical properties, increasing hard segment content, and improving mechanical properties

Active Publication Date: 2019-06-14
ZHEJIANG YUANRONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene nanomaterials are easy to agglomerate at the nanometer scale, have poor compatibility with materials, and have weak interfacial binding ability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The elastomer material of this embodiment includes a first component and a second component.

[0051] The first component includes an isocyanate prepolymer obtained by reacting polyether polyol with methyl isocyanate, p-phenylene diisocyanate, and triphenylmethane isocyanate, and the -NCO content of the isocyanate prepolymer is 25%;

[0052] The second component includes the following components in parts by weight: 18 parts of polyether triamine, 56 parts of polyether diamine, 5 parts of diethylmethylenediamine, 3 parts of polytetrahydrofuran ether polyol, surface pretreated 3 parts of graphene oxide.

[0053] The preparation method of elastomeric material comprises the steps:

[0054] (1) Mix 30g of polyether triol and 100g of polyether diol evenly, heat to 100-120°C for dehydration for 2-3 hours, then lower the temperature to 70°C, add 1g of methyl isocyanate, 135g of p-phenylene diisocyanate, three 35g of phenylmethane isocyanate, heat preservation reaction for 2-3...

Embodiment 2

[0059] This embodiment refers to the elastomeric material and its preparation method in Example 1, the only difference being that the -NCO content of the first component cyanate prepolymer is 22%;

[0060] The preparation method of the first component includes: mixing 30g of polyether triol and 100g of polyether diol evenly, heating to 100-120°C for dehydration for 2-3 hours, then cooling down to 70°C, adding 0.8g of methyl isocyanate, 110g of p-phenylene diisocyanate, 30g of triphenylmethane isocyanate, heat preservation reaction for 2-3h, defoaming and cooling to obtain the first component with -NCO content of 22±1%.

Embodiment 3

[0062] This embodiment refers to the elastomeric material and its preparation method of Example 1, the only difference being that the -NCO content of the first component cyanate prepolymer is 30%;

[0063] The preparation method of the first component includes: mixing 30g of polyether triol and 100g of polyether diol evenly, heating to 100-120°C for dehydration for 2-3 hours, then cooling down to 70°C, adding 1.5g of methyl isocyanate, 200g of p-phenylene diisocyanate, 55g of triphenylmethane isocyanate, heat preservation reaction for 2-3h, defoaming and cooling to obtain the first component with -NCO content of 30±1%.

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Abstract

The invention relates to the technical field of polyurea materials, in particular to a graphene substance-modified elastomer material and a preparation method thereof. The elastomer material comprisesa first component and a second component, wherein the first component includes an isocyanate prepolymer obtained by reacting polyhydric alcohols and isocyanate substances; the isocyanate prepolymer contains 22 to 30 percent of -NCO; the second component comprises the following components in parts by weight: 60 to 90 parts of polyether amine, 1 to 10 parts of a liquid amine chain extender, 1 to 5parts of polytetrahydrofuran ether polyhydric alcohols and 1 to 5 parts of graphene substance. The hard segment content is improved by regulating the -NCO content of the isocyanate prepolymer. In combination with the components in the second component, the elasticity of a polymer is ensured while the mechanical properties of hardness, bending resistance and the like are improved.

Description

technical field [0001] The invention relates to the technical field of polyurea materials, in particular to an elastomer material modified by a graphene substance and a preparation method thereof. Background technique [0002] Polyurea material has high impact and wear resistance, good anti-seepage effect, corrosion resistance and good comprehensive mechanical properties, and has been widely used in national defense, industrial and civil construction, and water conservancy and hydropower projects. [0003] Polyurea elastomer is a new type of green material developed in recent years to meet the needs of environmental protection. It belongs to rapid-response spray molding. The raw material system does not contain solvents and has a fast curing speed. It can be continuously sprayed on facades and curved surfaces with a thickness of more than ten millimeters. without hanging. [0004] Graphene is a two-dimensional nanomaterial composed of carbon atoms. It is currently known as ...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/50C08G18/32C08K9/06C08K3/04
CPCC08G18/12C08K3/042C08K9/06C08G18/4812C08G18/482C08G18/4825C08G18/4829C08G18/4854C08G18/5024C08G18/3228C08G18/71C08G18/7614C08G18/7657C08G18/7664C08G18/6685C08G18/4841C08K3/34
Inventor 俞松茂肖吕明俞燕刚
Owner ZHEJIANG YUANRONG TECH
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