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Polyurethane foam and preparation method and application thereof

A technology of polyurethane foam and isocyanate, which is applied in chemical instruments and methods, and other chemical processes, can solve the problems of poor hydrophobicity and achieve the effects of high hydrophobicity, large surface roughness, and low surface energy

Active Publication Date: 2015-02-04
SOUTHWEAT UNIV OF SCI & TECH +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of polyurethane foam, its preparation method and its application in view of the poor hydrophobic performance of the existing polyurethane foam.
The invention can effectively overcome the defect of poor hydrophobic performance of the existing polyurethane foam, and the polyurethane foam provided has superhydrophobic characteristics, and can selectively absorb oil and liquid organic pollutants for liquid organic pollutants and oil products leaked to the water surface And can not absorb water at all, so as to achieve the purpose of oil-water separation

Method used

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  • Polyurethane foam and preparation method and application thereof
  • Polyurethane foam and preparation method and application thereof
  • Polyurethane foam and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0065] The superhydrophobic polyurethane foam in this embodiment weighs each raw material component according to the following mass ratio: 25kg isocyanate, 35kg hydroxyl-terminated liquid rubber, 2kg catalyst, 0.5kg foam stabilizer, 2kg blowing agent, 3kg cell opener, 15kg resistance Fuel. Among them, the isocyanate in this embodiment is polymethylene polyphenyl polyisocyanate, the hydroxyl-terminated liquid rubber is grafted with aliphatic amine to epoxidize hydroxyl-terminated polybutadiene, and the catalyst is a combination of tertiary ammonia catalyst and organometallic catalyst. catalyst.

Embodiment 2

[0067] The superhydrophobic polyurethane foam in this embodiment includes the following components: 25kg isocyanate, 40kg hydroxyl-terminated liquid rubber, 2kg catalyst, 0.7kg foam stabilizer, 3kg blowing agent, 3kg cell opener, 10kg flame retardant. The isocyanate in this embodiment is polymethylene polyphenyl polyisocyanate; the carboxyl-terminated liquid rubber is aliphatic amine grafted carboxyl-terminated polybutadiene acrylonitrile; the catalyst is a composite catalyst of a tertiary ammonia catalyst or an organometallic catalyst.

Embodiment 3

[0069] (1) Preparation of aliphatic amine grafted hydroxyl-terminated polybutadiene acrylonitrile

[0070] Add octadecylamine and carboxyl-terminated polybutadiene acrylonitrile (number-average molecular weight 2000, nitrile group content 15%) in the reactor, wherein the nitrile functional group of carboxyl-terminated polybutadiene acrylonitrile and the amino functional group of octadecylamine The molar ratio is 1:1.3. Then add chloroform into the reactor, ultrasonically mix for 15 minutes, react at 65° C. for 4 hours, test the group change by infrared, and the reaction ends when the characteristic peak of the nitrile group disappears. The product obtained from the reaction was submerged in an alcoholic solvent to precipitate naturally, and then distilled under reduced pressure at 95°C and a pressure of -0.95MPa for 3 hours to obtain polybutadiene acrylonitrile grafted with aliphatic amines.

[0071] (2) Preparation of aliphatic amine grafted epoxidized hydroxyl-terminated po...

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Abstract

The invention discloses polyurethane foam and a preparation method and application thereof, and the purpose is to solve the problems of poor hydrophobic performance of the existing polyurethane foam. The polyurethane foam includes isocyanate, hydroxyl terminated liquid rubber, a catalyst, a foaming agent, a foam stabilizer, a hole opening agent, a flame retardant, fatty amine and the like. Through use of low surface energy and high hydrophobic performance of the fatty amine and reaction performance of nitrile group (-CN) and epoxy group (-CH (O) CH-), the fatty amine is introduced into the nitrile group or epoxy group-containing hydroxyl terminated liquid rubber and nitrile group or epoxy group-containing carboxyl terminated liquid rubber, and by reaction with the isocyanate, the super hydrophobic polyurethane foam is prepared. When the super hydrophobic polyurethane foam absorbs oil-water mixtures, or oil and liquid organic matters leaking onto the water surface, only oil and liquid organic matters are absorbed, no water is absorbed, so that recovery of leaked oil and liquid organic matters and water purification can be realized.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a polyurethane foam, its preparation method and its application. Specifically, the present invention relates to a superhydrophobic polyurethane foam, its preparation method and its application. Background technique [0002] Polyurethane foam is a kind of polymer foam material produced by polyaddition reaction between isocyanate monomer and compounds containing active hydrogen (such as -OH, -COOH, -NH-, etc.) in the presence of foaming agent. . Its main features are: porosity and low relative density. At the same time, it also has excellent physical and mechanical properties, acoustic properties, electrical properties and chemical resistance, and is widely used in home furnishing, transportation, construction industry, packaging materials and military aerospace industry and other fields. [0003] At present, the application of polyurethane foam to the treatment of typical toxic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/14C08K13/04C08K7/24C08K3/04C08K3/32C08K5/3492C08J9/14C08G18/76C08G18/69C08G59/50C08G69/34C09K3/32
Inventor 刘海东应琴贾飞
Owner SOUTHWEAT UNIV OF SCI & TECH
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