Polyurethane foam based on graphene modification and preparation method thereof

A polyurethane foam and graphene modification technology, applied in the field of polyurethane foam, can solve the problems of poor antibacterial and antibacterial effects, insufficient foam strength, etc., and achieve the effect of convenient preparation method, regular cell structure, and improved average functionality

Inactive Publication Date: 2021-06-08
江苏威久科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing graphene polyurethane foam is not strong enough to meet people's needs, and the antibacterial and antibacterial effects are not good.

Method used

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  • Polyurethane foam based on graphene modification and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] The invention provides a graphene-based modified polyurethane foam, comprising the following raw material composition in weight percentage: 15% polyether polyol, 15% polyester polyol, 40% isocyanate, 3% modified graphene, foam Agent 2%, Catalyst 1% and Foam Stabilizer 1%.

[0028] In a preferred embodiment, the polyether polyol is one or more of ethylene glycol, propylene glycol, diethylene glycol, and triethylene glycol, and the average polyether polyol The functionality is 3, and the polyester polyol is one or more of aliphatic polyester polyols, alicyclic polyester polyols, and aromatic polyester polyols containing aromatic ring structures, and the polyester polyols The polyols have an average functionality of 5.

[0029] In a preferred embodiment, the foaming agent is fluorodichloroethane, 1,1,1,3,3-pentafluorobutane, azodicarbonamide, diisopropyl azodicarboxylate , 4,4-disulfonyl hydrazide diphenyl-p-toluene sulfonyl hydrazide, 1,3-benzenedisulfonyl hydrazide, n-...

Embodiment 2

[0042] Different from Example 1, the raw material composition comprising the following weight percentages: polyether polyol 20%, polyester polyol 20%, isocyanate 45%, modified graphene 6%, blowing agent 4%, catalyst 2% and Foam Stabilizer 2%.

Embodiment 3

[0044] All different from Examples 1-2, the composition of raw materials comprising the following percentages by weight: polyether polyol 25%, polyester polyol 25%, isocyanate 50%, modified graphene 9%, blowing agent 6%, Catalyst 3% and Foam Stabilizer 3%.

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Abstract

The invention discloses a polyurethane foam based on graphene modification, and particularly relates to the technical field of polyurethane foam. The polyurethane foam is prepared from the following raw materials: polyether polyol, polyester polyol, isocyanate, modified graphene, a foaming agent, a catalyst and a foam stabilizer. Graphene is modified by utilizing isocyanate and doxorubicin hydrochloride, an isocyanate group is introduced to the surface of graphene, the isocyanate group can react with polyether polyol, the purpose of modifying polyurethane foam by graphene polymerization is achieved, doxorubicin hydrochloride is loaded on graphene by utilizing an ultrasonic oscillation mode, a hydrogen bond can be formed between graphene and doxorubicin hydrochloride, the mechanical strength of the polyurethane foam can be effectively improved under the action of an isocyanate group and the hydrogen bond, and doxorubicin hydrochloride contained in the polyurethane foam can effectively achieve antibacterial and bacteriostatic effects, so that the use requirements of people can be met.

Description

technical field [0001] The invention relates to the technical field of polyurethane foam, more specifically, the invention relates to a graphene-based modified polyurethane foam and a preparation method thereof. Background technique [0002] Polyurethane foam is made of polyether and isocyanate as the main raw materials, and is foamed by cross-linking under the action of various additives such as foaming agent, catalyst, etc. Polyurethane foam has excellent elasticity, softness, elongation rate and compressive strength; good chemical stability; also has excellent processability, heat insulation, adhesion and other properties, is a kind of cushioning material with excellent performance, used for cushioning packaging of high-end precision instruments, valuable equipment, high-end handicrafts, etc. Or cushion cushioning material, can also be made into exquisite, protective packaging container; can also be used to cushion the packaging of items by foaming on site, in addition, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/44C08G18/32C08K9/12C08K9/04C08K3/04C08J9/14C08J9/10
CPCC08G18/6674C08G18/44C08G18/3206C08K9/12C08K9/04C08K3/042C08J9/144C08J9/146C08J9/103C08J9/102C08J9/105C08J9/141C08J2203/04C08J2203/14C08J2203/142C08J2375/06
Inventor 王新周楚凡史文贞黄广晋
Owner 江苏威久科技发展有限公司
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