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Ternary interpenetrating polymer network structure paint and preparation method thereof

A technology of interpenetrating polymer and network structure, applied in the field of ternary interpenetrating polymer network structure coating and its preparation, can solve the problem of low water resistance, poor compatibility and compatibility, poor long-term anti-corrosion performance of water-based anti-corrosion coatings, etc. problems, to achieve the effect of improving water resistance, improving overall performance, and cost-effective

Active Publication Date: 2018-12-21
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

[0004] In order to solve the problems existing in the prior art such as poor compatibility and compatibility in current polymer substrates, low water resistance of water-based anti-corrosion coatings, and poor long-term anti-corrosion performance, the present invention provides a ternary interpenetrating coating Polymer network structure coating and preparation method thereof

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  • Ternary interpenetrating polymer network structure paint and preparation method thereof

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preparation example Construction

[0028] The method for preparing a ternary interpenetrating polymer network structure coating of the present invention has the following specific steps:

[0029] a. Weigh 100 parts of 10% polyvinyl alcohol (PVA) solution and 4-8 parts of glycidyl methacrylate, add them to a 250ml three-necked flask, raise the temperature to 60-90℃, and stir until it forms Transparent and colorless solution; then slowly add acid, adjust the pH value to 1~2, add dropwise cerium ammonium nitrate solution, continue the reaction for 2~3h, then you can prepare glycidyl methacrylate modified PVA solution (GPVA) .

[0030] b. Add 2-6 parts of aniline dropwise to 100 parts of GPVA solution with a mass fraction of 10%, and react at 50-70° C. for 2 to 3 hours to prepare the aniline grafted modified GPVA dispersion.

[0031] c. Reduce the temperature of the aniline graft modified GPVA dispersion system to 0~5℃, add an acid solution to adjust the pH of the system to 1~2, and then add a metered oxidant to initiate...

Embodiment 1

[0036] a. Weigh 100 parts of 10% polyvinyl alcohol (PVA0588) aqueous solution and 5 parts of glycidyl methacrylate, add them to a 250ml three-necked flask, raise the temperature to 80℃, and stir until a transparent colorless solution is formed ; Then slowly add hydrochloric acid solution, adjust the pH to 1, dropwise add cerium ammonium nitrate solution, continue to react for 3h, you can prepare glycidyl methacrylate modified PVA solution (GPVA).

[0037] b. Add 3 parts of aniline dropwise to 100 parts of GPVA solution with a mass fraction of 10%, and react at 60° C. for 2 hours to prepare the aniline graft modified GPVA dispersion.

[0038] c. Reduce the temperature of the aniline grafted modified GPVA dispersion system to 0°C, add hydrochloric acid solution to adjust the pH of the system to 1, and then dropwise add an oxidant to initiate the redox reaction of aniline. The molar ratio of oxidant to aniline is 1, and react The dispersion of polyaniline grafted modified GPVA (PANI-G...

Embodiment 2

[0042] a. Weigh 100 parts of 10% polyvinyl alcohol (PVA1099) solution and 4 parts of glycidyl methacrylate, add them to a 250ml three-necked flask, raise the temperature to 80℃, and stir until a transparent colorless solution is formed ; Then slowly add nitric acid solution, adjust the pH value to 1, dropwise add cerium ammonium nitrate solution, continue to react for 3h, you can prepare glycidyl methacrylate modified PVA solution (GPVA).

[0043] b. Add 4 parts of aniline dropwise to 100 parts of GMA-PVA solution with a mass fraction of 10%, and react at 70° C. for 2.5 hours to prepare the aniline graft modified GPVA dispersion.

[0044] c. Reduce the temperature of the aniline graft modified GPVA dispersion system to 5°C, add sodium dodecylbenzene sulfonate solution to adjust the pH of the system to 2, and then add a metered oxidant ferric chloride to initiate the oxidation of aniline In the reduction reaction, the molar ratio of the oxidant to the aniline is 1.5, and the polyani...

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Abstract

The invention discloses ternary interpenetrating polymer network structure paint and a preparation method thereof. By grafting copolymerized glycidyl methacrylate onto a polyvinyl alcohol molecule chain, an epoxy functional group is introduced; then through reaction of the epoxy functional group and amino on aniline, an aniline molecule is introduced to an epoxy modified polyvinyl alcohol moleculechain, chemical oxidative polymerization reaction of the aniline is carried out, and polyaniline grafted modified polyvinyl alcohol is prepared; finally, acrylate monomers are added into a polyaniline grafted modified polyvinyl alcohol system, and through an initiator, polymerization of free radicals of the acrylate monomers is initiated, so that polyacrylate / polyaniline-polyvinyl alcohol ternaryinterpenetrating polymer network structure dispersion liquid is prepared. The polyacrylate / polyaniline-polyvinyl alcohol ternary interpenetrating polymer network structure dispersion liquid, water-based polymer matrix resin, a defoaming agent, a thickener and a film-forming auxiliary can be compounded to prepare the environment-friendly compound anti-corrosive paint. The ternary interpenetratingpolymer network structure paint and the preparation method thereof have the advantages that a preparation process is simple, the cost is low, the durability is good, the comprehensive performance is excellent, and the like, and excellent application prospects and economic benefits are achieved.

Description

Technical field [0001] The invention relates to the technical field of preparation of environmentally friendly composite coatings, in particular to a ternary interpenetrating polymer network structure coating and a preparation method thereof. Background technique [0002] As a new type of functional polymer material, conductive polyaniline has many unique advantages compared with other intrinsic conductive polymers and is considered to be one of the conductive polymers with the most practical application prospects. Polyaniline has excellent conductivity, reversible doping, good redox reversibility, environmental stability, and is easy to produce and synthesize on a large scale. However, PANI's lack of dispersion and mechanical properties severely limits its large-scale application. Polyaniline is generally dark green powder, insoluble and infusible, and generally insoluble in organic solvents, resulting in poor mechanical properties and processing properties. Combining polyanil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D129/04C09D179/02C09D133/10C09D133/12C09D5/08
CPCC08L2205/03C08L2205/04C09D5/08C09D129/04C09D133/10C09D133/12C08L33/10C08L33/12C08L79/02
Inventor 王海花王梦曦费贵强秦璇邵彦明孙立宇
Owner SHAANXI UNIV OF SCI & TECH
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