Solvent-free polyaspartic acid ester polyurea elastic waterproof paint

A technology of aspartic acid ester and waterproof coating, which is applied in the direction of polyurea/polyurethane coating, coating, etc., can solve the problems of poor surface effect, poor color retention and aging resistance of polyurea, low adhesion, etc., to achieve Convenient construction, excellent elongation at break, environmentally friendly effect

Active Publication Date: 2013-04-10
SHENZHEN FEIYANG JUNYAN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the spray polyurea elastomer (SPUA) on the market has already shown superior performance as a waterproof material, some problems have been exposed during use, such as the reaction speed is too fast and the gel time is only a few seconds to more than ten seconds, which requires special Large-scale spraying equipment, it is difficult to apply to small areas or irregular surfaces, and the

Method used

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  • Solvent-free polyaspartic acid ester polyurea elastic waterproof paint
  • Solvent-free polyaspartic acid ester polyurea elastic waterproof paint
  • Solvent-free polyaspartic acid ester polyurea elastic waterproof paint

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] A solvent-free polyaspartate polyurea elastic waterproof coating is composed of two groups of components. Component A is prepared from 34.8 parts of toluene diisocyanate (TDI) and 100 parts of polyoxypropylene glycol with a molecular weight of 1000 to prepare a prepolymer with a content of 6.2% NCO, and 15 parts of diphenylmethane diisocyanate (MDI) are added. The NCO content of the A component is 9-11%.

[0022] After the B component of the coating is accurately added according to the formula, it is dispersed on a high-speed disperser for at least 30 minutes;

[0023] The formula is as follows:

[0024]

[0025] The dispersed A component and B component are mixed evenly according to the ratio of NC0 equivalent and NH equivalent, respectively, and then the board is tested. The coating thickness is 0.5-0.6mm. And GB / T19250 (polyurethane waterproof coating), the test results are as follows;

[0026] Test items

[0027] Dry tim...

Example Embodiment

[0028] Example 2

[0029] A solvent-free polyaspartate polyurea elastic waterproof coating is composed of two groups of components. Component A is prepared from 34.8 parts of toluene diisocyanate (TDI) and 100 parts of polyoxypropylene glycol with a molecular weight of 1000 to prepare a prepolymer with an NCO content of 6.2%, adding 7.5 parts of HDI trimer with an NCO content of 21% and 7.5 parts of diphenyl Methane diisocyanate (MDI), the A component with an NCO content of 9-11% is prepared after mixing uniformly.

[0030] After the paint component B is accurately added according to the formula, it is dispersed on a high-speed disperser for at least 30 minutes;

[0031] The formula is as follows

[0032]

[0033]

[0034] The dispersed components A and B are mixed evenly according to the ratio of NCO equivalent and NH equivalent, respectively, and then the board is tested. The coating thickness is 0.5-0.6mm. And GB / T19250 (polyurethane waterproof coating), the test r...

Example Embodiment

[0036] Example 3

[0037] A solvent-free polyaspartate polyurea elastic waterproof coating is composed of two groups of components. Component A is prepared from 44.4 parts of isophorone diisocyanate (IPDI) and 100 parts of polyoxypropylene diol with a molecular weight of 1000 to prepare a prepolymer with an NCO content of 5.8%, adding 36 parts of dicyclohexylmethane diisocyanate, and after mixing evenly The prepared A component with an NCO content of 11.0%.

[0038] After the paint component B is accurately added according to the formula, it is dispersed on a high-speed disperser for at least 30 minutes;

[0039] The formula is as follows:

[0040] Material composition

[0041] The dispersed components A and B are mixed evenly according to the ratio of NCO equivalent and NH equivalent, respectively, and then the board is tested. The coating thickness is 0.5-0.6mm. And GB / T19250 (polyurethane waterproof coating), the test results are as follows;

[0042] ...

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Abstract

The invention relates to paint and a preparation method thereof and discloses solvent-free polyaspartic acid ester polyurea elastic waterproof paint. The solvent-free polyaspartic acid ester polyurea elastic waterproof paint is composed of a component A and a component, wherein the component A comprises 2%-35% of polyisocyanate and 65%-98% of end seal isocyanate prepolymer by weight percent; and the component B comprises 20%-60% of polyaspartic acid ester, 10%-40% of polymeric modified poly aspartic acid ester, 5%-30% of stuffing and a small amount of additives by weight percent. Compared with the polyurea paint processed by the polyaspartic acid ester, the solvent-free polyaspartic acid ester polyurea elastic waterproof paint processed by raw materials has the advantages that the construction is convenient, a special large-scale spraying device is not needed, the gelation time is prolonged, the surface drying time is shortened, the tensile strength is enhanced, the elongation at break is increased, and the elastic coating film hardness is increased, does not have a solvent, is environment-friendly and harmless to a human body.

Description

technical field [0001] The invention relates to a waterproof coating, in particular to a solvent-free polyaspartic acid with good waterproof performance, excellent mechanical properties, acid and alkali resistance, salt resistance, water resistance, aging resistance, corrosion resistance, convenient construction and no need for special large-scale spraying equipment. Urethane polyurea elastic waterproof coating. Background technique [0002] Polyaspartic ester coating is an aliphatic, slow response, high weather resistance and high performance coating developed in the field of polyurea in recent years, known as the third generation of polyurea. Compared with traditional polyurethane coatings, its main resin, polyaspartic acid ester, is secondary aminodiamine, which has a faster reaction speed, is easy to achieve thick coating, reduces construction time and times, and has excellent performance; at the same time, it has high solid and low viscosity Especially suitable for the...

Claims

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Application Information

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IPC IPC(8): C09D175/02
Inventor 崔治清张余英邬茳蒋茶罗善锴刘小卿肖增钧傅民
Owner SHENZHEN FEIYANG JUNYAN TECH DEV
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