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Water-based protective coating for NTC thermistor temperature alarm and preparation method of the water-based protective coating

A technology for temperature alarms and protective coatings, applied in coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve the problems of physical and mental health hazards of coating workers, air pollution, etc., and achieve the effect of meeting environmental protection and intact solder joints

Inactive Publication Date: 2021-11-26
郑州新阳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device is generally used in some harsh environments and strong corrosive fields, and it is easy to affect the service life of the alarm due to corrosion, rust and other reasons, so it is particularly important to take protective measures for it, but the protective coatings currently used are basically It is a solvent-based paint, which contains a large amount of VOC (volatile organic compounds), which pollutes the atmosphere; it also contains a large amount of benzene series, which causes great harm to the physical and mental health of the painting workers. In this context, it is necessary to develop low-VOC paint that meets the technical requirements Yes, environmentally friendly coatings that do not contain benzene series are imperative

Method used

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  • Water-based protective coating for NTC thermistor temperature alarm and preparation method of the water-based protective coating
  • Water-based protective coating for NTC thermistor temperature alarm and preparation method of the water-based protective coating
  • Water-based protective coating for NTC thermistor temperature alarm and preparation method of the water-based protective coating

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Experimental program
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preparation example Construction

[0038] A preparation method for a water-based protective coating for an NTC thermistor temperature alarm, comprising the steps of:

[0039] (1) According to the above ratio, take the deionized water in the formula and slowly add it to the mixing tank, and add the dispersant, leveling agent, first defoamer, substrate wetting agent, and pH regulator under the stirring state of 300r / min , the fungicide is then stirred at a speed of 500-800r / min, and dispersed for 10-30min;

[0040] (2) After reducing the speed, slowly add carbon black, modified aluminum phosphate, and zinc-free environmentally friendly anti-rust pigments under the stirring state of 300r / min. 1000r / min, stir for 25-35min, cover and soak for 4h, make it fully infiltrated, then transfer to a horizontal sand mill to start grinding, turn on circulating cooling water, control the grinding temperature not to exceed 40°C, measure with a scraper fineness meter, The fineness reaches 15-20um, and the grinding slurry is sen...

Embodiment 1

[0044] A water-based protective coating for an NTC thermistor temperature alarm disclosed by the invention comprises the following raw materials proportioned by weight percentage: 10% deionized water, 0.8% dispersant, 0.15% first defoamer, The second defoamer 0.21%, leveling agent 0.45%, bactericide 0.15%, substrate wetting agent 0.35%, anti-flash rust agent 1.0%, pH regulator 0.25%, the first type of thickener 0.45%, the second Type II thickener 0.2%, carbon black 2.8%, modified aluminum tripolyphosphate 10.0%, zinc-free environmentally friendly anti-rust pigment 7.0%, water-based modified epoxy resin 55%; Joint agent 3.0%.

[0045] The water-based modified epoxy resin is a self-emulsifying one-component modified epoxy resin, which can be self-crosslinked to form a film without matching a curing agent.

[0046] The first defoamer is a modified silicone defoamer, and the second defoamer is a modified polysiloxane defoamer.

[0047] The first thickener is a nonionic polyureth...

Embodiment 2

[0054] A water-based protective coating for an NTC thermistor temperature alarm disclosed by the invention comprises the following raw materials proportioned by weight percentage: 5.05% deionized water, 0.5% dispersant, 0.1% first defoamer, The second defoamer 0.12%, leveling agent 0.3%, bactericide 0.1%, substrate wetting agent 0.15%, anti-flash rust agent 0.5%, pH regulator 0.1%, the first thickener 0.3%, the second Type II thickener 0.15%, carbon black 2.0%, modified aluminum tripolyphosphate 8.0%, zinc-free environmentally friendly anti-rust pigment 4.0%, water-based modified epoxy resin 45%; Joint agent 2.5%.

[0055] The water-based modified epoxy resin is a self-emulsifying one-component modified epoxy resin, which can be self-crosslinked to form a film without matching a curing agent.

[0056] The first defoamer is a modified silicone defoamer, and the second defoamer is a modified polysiloxane defoamer.

[0057] The first thickener is a nonionic polyurethane thicken...

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Abstract

The invention relates to a water-based protective coating for an NTC thermistor temperature alarm and a preparation method of the water-based protective coating. The water-based coating comprises the following raw materials in percentage by weight: 5.05%-19.38% of deionized water, 0.5%-1.0% of a dispersing agent, 0.1%-0.2% of a first defoaming agent, 0.12%-0.25% of a second defoaming agent, 0.3%-0.6% of a flatting agent, 0.1%-0.2% of a sterilizing agent, 0.15%-0.55% of a base material wetting agent, 0.5%-1.5% of a flash rust resisting agent, 0.1%-0.4% of a pH regulator, 0.3%-0.55% of a thickening agent of the first type, 0.15%-0.25% of a thickening agent of the second type, 2.0%-3.5% of carbon black,8.0%-12.0% of modified aluminum tripolyphosphate, 4.0-9.0% of zinc-free environment-friendly antirust pigment, 45-65% of waterborne modified epoxy resin, 2.1-4.2% of a coalescing agent and 2.5-3.5% of a coupling agent. The coating has the advantages of thin coating, acid corrosion resistance, high-concentration saline water, corrosion resistance and the like, and can meet the environment-friendly requirement.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-based protective coating for an NTC thermistor temperature alarm and a preparation method thereof. Background technique [0002] NTC is the abbreviation of Negative Temperature Coefficient, which means a negative temperature coefficient, and generally refers to semiconductor materials or components with a large negative temperature coefficient. The so-called NTC thermistor is a negative temperature coefficient thermistor. This type of material is a thermistor phenomenon and material that decreases exponentially with temperature rise and has a negative temperature coefficient. The material is made of two or more of manganese, copper, silicon, cobalt, iron, nickel, zinc, etc. Semiconductor ceramics made by fully mixing, molding, and sintering metal oxides. At present, many high-tech electronic products require thermistors to perform stable temperature control and temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08
CPCC09D163/00C09D5/084C09D5/082C08K2003/327C08K9/00C08K3/32
Inventor 赵丽宋小利曹喜贺
Owner 郑州新阳新材料科技有限公司
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