Water-based heat-resistant anticorrosive paint with magnetic conductive function and preparation method of water-based heat-resistant anticorrosive paint

An anti-corrosion coating, water-based technology, applied in magnetic coatings, anti-corrosion coatings, polyester coatings, etc., can solve the problems of coatings without magnetic conductivity, environmental pollution, waste of energy, etc., to enhance the effect of electromagnetic heating and reduce VOC emissions The effect of improving the anti-corrosion performance

Active Publication Date: 2022-05-10
HANGZHOU JIHUA POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current silicone-modified polyester coatings are solvent-based products. During construction and application, a large amount of organic solvents enter the atmosphere, which not only causes environmental pollution, but also wastes energy.
It can be transformed into an environmentally friendly product by water-based method, but it is applied to the composite film alone, and its anti-corrosion performance is not good, and because the formed coating does not have the function of magnetic conduction, it will affect the electromagnetic heating effect of the composite film

Method used

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  • Water-based heat-resistant anticorrosive paint with magnetic conductive function and preparation method of water-based heat-resistant anticorrosive paint

Examples

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preparation example Construction

[0038] 1) Preparation of water-based silicone modified polyester resin: put 1-5 parts (parts by mass, the same below) of neopentyl glycol, 10-20 parts of trimethylolpropane, and 10-30 parts of isophthalic acid into In the reaction kettle, heat up to 160-180°C for 1-2 hours of esterification, then raise the temperature to 200-220°C, continue the reaction for 2-4 hours until the acid value drops below 10mgKOH / g and stop the reaction. During the reaction process, 5-10 parts of di Keep reflux of toluene as water-carrying agent, cool down to 140-160°C, add 10-20 parts of ethylene glycol butyl ether and 3-6 parts of trimellitic anhydride, continue the reaction until the acid value is 60-80mgKOH / g, cool down to 110-130°C, Add 0.01-0.02 parts of tetrabutyl titanate and 15-30 parts of organic silicon intermediates, react for 1-2 hours until transparent, then cool down to 80-90°C, add 3-6 parts of N,N-dimethylethanolamine in progress And, finally add 30-60 parts of water to disperse.

...

Embodiment 1

[0043] 1) Preparation of water-based silicone-modified polyester resin: Put 5 parts of neopentyl glycol, 20 parts of trimethylolpropane, and 30 parts of isophthalic acid into the reaction kettle, heat up to 180°C and keep warm for 1 hour for esterification Then raise the temperature to 220°C, continue the reaction for 2 hours until the acid value drops to 8.9mgKOH / g, stop the reaction, keep reflux with 10 parts of xylene as a water-carrying agent during the reaction, cool down to 160°C, add 20 parts of ethylene glycol butyl ether and 6 Trimellitic anhydride, continue to react until the acid value is 68.6mgKOH / g, cool down to 130°C, add 0.02 parts of tetrabutyl titanate and 30 parts of organosilicon intermediate DC-3074, react for 1h until transparent, then cool down to 90°C, add 6 parts of N,N-dimethylethanolamine for neutralization, and finally add 60 parts of water for dispersion.

[0044] 2) Preparation of organically modified anti-corrosion functional filler: After dispers...

Embodiment 2

[0047] 1) Preparation of water-based silicone-modified polyester resin: Put 1 part of neopentyl glycol, 10 parts of trimethylolpropane, and 10 parts of isophthalic acid into the reaction kettle, heat up to 160°C and keep warm for 2 hours to perform esterification Then raise the temperature to 200°C, continue the reaction for 4 hours until the acid value drops to 9.2mgKOH / g, stop the reaction, keep reflux with 5 parts of xylene as a water-carrying agent during the reaction, cool down to 140°C, add 10 parts of ethylene glycol butyl ether and 3 part of trimellitic anhydride, continue to react until the acid value is 72.8mgKOH / g, cool down to 110°C, add 0.01 part of tetrabutyl titanate and 15 parts of organosilicon intermediate DC-3074, react for 2h until transparent, then cool down to 80°C, add 3 parts of N,N-dimethylethanolamine for neutralization, and finally add 30 parts of water for dispersion.

[0048] 2) Preparation of organically modified anti-corrosion functional filler: ...

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Abstract

The invention relates to the field of high polymer materials, and discloses a water-based heat-resistant anticorrosive coating with a magnetic conductive function and a preparation method thereof.The water-based heat-resistant anticorrosive coating is prepared from 60-80 parts of water-based organic silicon modified polyester resin, 20-40 parts of amino resin, 10-20 parts of anticorrosive filler, 5-10 parts of magnetic conductive metal particles, 1-3 parts of silane coupling agent and 0.1-0.3 part of tetraethyl orthosilicate. 10-20 parts of a high-temperature-resistant pigment, 1-3 parts of an auxiliary agent, 1-3 parts of a pH regulator and 10-20 parts of water. The water-based organic silicon modified polyester resin is prepared firstly, then the amino resin is added, and the molecular weight of the resin is increased and the crosslinking density of the resin is improved through the reaction between the water-based organic silicon modified polyester resin and the amino resin, so that the compactness of a coating is enhanced and the corrosion resistance of a coating film is improved; and meanwhile, the corrosion resistance and the magnetic conduction function of the coating are further enhanced by adding the anti-corrosion functional filler subjected to particle surface organic modification and the magnetic conduction metal particles.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a water-based heat-resistant anti-corrosion coating with a magnetic function and a preparation method thereof. Background technique [0002] Non-stick pans are mostly made of die-cast aluminum plates with good thermal conductivity. By coating non-stick coatings, you can easily fry and fry food without sticking to the bottom. It can minimize oil consumption and help the kitchen to be clean and less oily. It can also help people reduce their fat intake, complies with the consumption trend of modern people pursuing low-fat and low-calorie consumption, and greatly improves people's quality of life. The induction cooker is one of the main heating equipment for non-stick pans. Through electromagnetic induction, the pan body can sense the magnetic field, thereby generating eddy currents, which convert a large amount of heat energy as needed to directly heat the pan body rapidly, achievi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D161/32C09D5/10C09D5/23C09D7/63
CPCC09D167/00C09D5/10C09D5/23C09D7/63C08L2201/08C08K2201/01C08K2003/0806C08K2003/0856C08K2003/0862C08L61/32C08K3/08C08K9/06C08K3/34C08K3/042C08K7/00C08K5/5415
Inventor 钱涛刘海龙
Owner HANGZHOU JIHUA POLYMER MATERIAL CO LTD
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