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Aqueous graphene oxide modified poly(urethane-acrylate) composite material preparation method

A technology of acrylate and composite materials, which is applied in the field of preparation of water-based graphene oxide modified poly(urethane-acrylate) composite materials, can solve the problems of mechanical properties, water resistance, and solvent resistance of composite materials that have not been studied, and achieve Emulsion uniform effect

Inactive Publication Date: 2013-12-25
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of solvents were used in this experiment, and the mechanical properties, water resistance and solvent resistance of the composite materials were not studied.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Dissolve the graphene oxide prepared by the improved Hummers method in the solvent N,N'-dimethylformamide, and ultrasonically peel it off at room temperature for 4 hours at a frequency of 70 Hz to obtain a graphene oxide (GEO) dispersion;

[0043] (2) In a 500mL four-neck flask equipped with a stirrer, reflux condenser, thermometer and feeding device, add 8.322g of isophorone diisocyanate (IPDI) and 10g of N,N'-dimethylformamide solution Ultrasonic dispersion containing 0.0013g graphene oxide solution, react at 70°C for 4h, then add 10g polyether polyol NJ-210 and 1.169g dimethylol propionic acid (DMPA), drop 0.04g catalyst T-12, 65°C React for 4 hours; lower the temperature to 60°C, add 4.873g of hydroxyethyl methacrylate (HEMA) dropwise, continue the reaction for 4h, then lower the temperature to 40°C, add 0.888g of triethylamine for neutralization for 0.5h, add 11.9947g n-butyl acrylate (BA) monomer and 0.6313g trimethylolpropane triacrylate (TMPTA) crosslinking ...

Embodiment 2

[0045] (1) Dissolve the graphene oxide prepared by the improved Hummers method in the solvent N,N'-dimethylformamide, and ultrasonically peel it off at room temperature for 1 hour at a frequency of 100 Hz to obtain a graphene oxide (GEO) dispersion;

[0046] (2) In a 500mL four-neck flask equipped with a stirrer, reflux condenser, thermometer and feeding device, add 4.161g of isophorone diisocyanate (IPDI) and 5g of N,N'-dimethylformamide solution Ultrasonic dispersion containing 0.0013g graphene oxide solution, react at 90°C for 1h, then add 5g polyether polyol NJ-210 and 0.5845g dimethylol propionic acid (DMPA), drop 0.02g catalyst T-12, 75°C React for 3 hours; cool down to 60°C, add 2.436g of hydroxyethyl methacrylate (HEMA) dropwise, continue the reaction for 4h, then lower the temperature to 40°C, add 0.444g of triethylamine for neutralization for 0.5h, add 5.9974g of n-butyl acrylate (BA) monomer and 0.3156g of trimethylolpropane triacrylate (TMPTA) cross-linking agent, ...

Embodiment 3

[0048] (1) Dissolve the graphene oxide prepared by the improved Hummers method in the solvent N,N'-dimethylformamide, and ultrasonically peel it off at room temperature for 2 hours at a frequency of 80 Hz to obtain a graphene oxide (GEO) dispersion;

[0049] (2) Add 5.548g of isophorone diisocyanate (IPDI) and 6.67g of N,N'-dimethylformamide The solution was ultrasonically dispersed containing 0.0026g of graphene oxide solution, reacted at 80°C for 2h, then added 6.67g of polyether polyol NJ-210 and 0.7793g of dimethylol propionic acid (DMPA), and added dropwise 0.027g of catalyst T-12, React at 80°C for 2 hours; cool down to 60°C, add 3.249g of hydroxyethyl methacrylate (HEMA) dropwise, continue the reaction for 4h, then lower the temperature to 40°C, add 0.592g of triethylamine for neutralization for 0.5h, and add to the prepolymer Add 7.9965g of n-butyl acrylate (BA) monomer and 0.4208g of trimethylolpropane triacrylate (TMPTA) crosslinking agent, then add 43.8373g of deion...

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Abstract

The invention belongs to the technical field of polymer synthesis, and relates to aqueous poly(urethane-acrylate) emulsion modification, particularly to an aqueous graphene oxide modified poly(urethane-acrylate) composite material preparation method. According to the preparation method, an improved Hummers method is adopted to prepare graphene oxide, the graphene oxide is dissolved in N,N'-dimethylformamide, ultrasonic peeling is performed to prepare a graphene oxide dispersion solution, and the graphene oxide dispersion solution and n-butylacrylate are adopted to co-modify polyurethane. With the preparation method, the prepared composite material emulsion is uniform and stable, and the curing film has good mechanical property, and can be used in the fields of printing, packaging, furniture, electrical equipment, small metal parts, instrument panels, flooring, wood, paper coating, leathers, plastics, home appliances, electronics, telecommunications, aerospace, aviation and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and relates to the modification of water-based poly(urethane-acrylate) emulsion, in particular to a preparation method of water-based graphene oxide modified poly(urethane-acrylate) composite material. Background technique [0002] Polyurethane (PU) is a polymer formed by addition polymerization of polyisocyanate, macromolecular polyester polyol or polyether polyol, small molecular polyol and polyamine chain extender. Polyurethane has the advantages of high hardness, wear resistance, good flexibility, excellent adhesion, gloss and color retention, and is easy to design and process, so it is widely used in coatings, adhesives, foam plastics, inks, and rubber. However, polyurethane has poor impact resistance, easy foaming when exposed to moisture, poor acid and alkali resistance, poor heat resistance, water resistance, and antistatic properties, which limit its application in certain fiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/14C08F290/06C08F220/18C08F222/14C08G18/75C08G18/67C08G18/66C08G18/48C08G18/32C08K9/02C08K3/04C08L51/08
Inventor 邱凤仙李鹏玲荣新山杨冬亚徐吉成
Owner JIANGSU UNIV
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