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A kind of high glass transition temperature water-based solvent-free polyurea coating material and preparation method thereof

A high vitrification, coating material technology, used in polyurea/polyurethane coatings, coatings, anti-corrosion coatings, etc., can solve the problem of high energy consumption, acid and alkali resistance and liquid medium resistance of epoxy resin coatings are not as good as polyurea. and other problems, to achieve the effects of low energy consumption, excellent acid and alkali resistance, and good flexibility

Active Publication Date: 2021-09-21
SHENYANG RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The energy consumption of this coating is high during the coating process, and the epoxy resin coating is not as good as polyurea in terms of acid and alkali resistance and liquid medium resistance.

Method used

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  • A kind of high glass transition temperature water-based solvent-free polyurea coating material and preparation method thereof
  • A kind of high glass transition temperature water-based solvent-free polyurea coating material and preparation method thereof
  • A kind of high glass transition temperature water-based solvent-free polyurea coating material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-16

[0030] The preparation method of waterborne polyurea coating material is as follows:

[0031] (1) Add oily isocyanate and tributyl phosphate and / or triphenyl phosphate respectively to the dispersing tank according to the following formula table, and stir for 10 minutes;

[0032] (2) Add different contents of carbon black, bentonite, titanium dioxide and other pigments and fillers to the above slurry, and use 1000-2000r to disperse for 1-2 hours until the slurry is stable;

[0033] (3) Add different contents of wetting agent, leveling agent and defoamer to the stable slurry in sequence, stir for 10 minutes, and filter to obtain component A.

[0034] (4) Dissolve potassium silicate in deionized water until it becomes clear and transparent, and filter to obtain component B. The mass ratio of potassium silicate to deionized water is 4:6.

[0035] (5) Mix component A and component B obtained above at a mass ratio of 1.5:1, react at 0-30°C, and solidify to form a film.

[0036] Ta...

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Abstract

The invention belongs to the field of chemical industry, in particular to a high glass transition temperature water-based solvent-free polyurea coating material and a preparation method thereof. In particular, it relates to a water-based solvent-free polyurea coating material used in the fields of acid and alkali resistance and chemical medium resistance and a preparation method thereof. The coating is composed of oily component A and water-based component B in a mass ratio of (0.5-5): 1; wherein, oily component A is an active ingredient, a pigment filler and an auxiliary agent; the active ingredient is oily Isocyanates and phosphates. The water-based solvent-free polyurea coating involved in the present invention has a higher glass transition temperature, better flexibility and excellent corrosion resistance, and has excellent chemical medium resistance such as acid and alkali resistance, oil resistance, solvent resistance, etc., especially in strong acid resistance. , strong alkali, excellent performance. It can be used in relatively harsh corrosive environments to improve the service life of equipment, especially suitable for chemical anti-corrosion fields, such as corrosion protection in chemical plant sour gas areas, equipment linings, and concentrated waste pools.

Description

technical field [0001] The invention belongs to the field of chemical industry, in particular to a high glass transition temperature water-based solvent-free polyurea coating material and a preparation method thereof. In particular, it relates to a water-based solvent-free polyurea coating material used in the fields of acid and alkali resistance and chemical medium resistance and a preparation method thereof. Background technique [0002] Coating products are high polymers, and their movement has duality, that is, the movement of chain segments and the movement of the entire molecular chain. It has both the elasticity of a solid and the viscoelasticity of a liquid. The glass transition temperature is the lowest temperature at which the chain segment can move, and its level is directly related to the flexibility of the molecular chain. Generally speaking, the greater the flexibility of the molecular chain, the lower the glass transition temperature and the better the flexib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C09D7/61C09D7/63C09D5/08
CPCC09D5/08C09D175/02C09D7/61C09D7/63C08K13/02C08K5/521C08K5/523C08K3/34
Inventor 王佳妮滕赟周乃羽张宇吴井龙韩悦史美慧
Owner SHENYANG RES INST OF CHEM IND
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