Exposed mono-component polyurethane waterproof coating and preparation method therefor

A polyurethane waterproof, one-component technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of construction workers' fainting, workers' physical health injuries, etc., and achieve good construction performance, excellent heat aging resistance and UV resistance Aging performance, cost saving effect

Active Publication Date: 2016-03-30
大禹九鼎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

At present, polyurethane waterproof coatings are more and more widely used in the field of construction engineering, but most of the polyurethane waterproof products on the market are synthesized from toluene diisocyanate (TDI), and toxic solvents such as toluene, xyl

Method used

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  • Exposed mono-component polyurethane waterproof coating and preparation method therefor
  • Exposed mono-component polyurethane waterproof coating and preparation method therefor
  • Exposed mono-component polyurethane waterproof coating and preparation method therefor

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preparation example Construction

[0035] Corresponding to the above formulation system, a method for preparing an exposed one-component polyurethane waterproof coating, the steps are:

[0036] 1) Uniformly disperse polyether polyol, chlorinated paraffin, filler and carbon black, grind and dehydrate;

[0037] 2) Add isocyanate and fully react;

[0038] 3) Cool down, add catalyst, antioxidant, ultraviolet absorber, environmental protection solvent, fully stir;

[0039] 4) defoaming, stop stirring, discharge.

[0040] In step 2), the reaction temperature is 75-85°C, and the reaction time is 2-5h;

[0041] Preferably, the preparation method is:

[0042] 1) Add polyether DL-1000D, DL-2000D, EP-330NG, chlorinated paraffin, filler and carbon black into the dispersion kettle, start the agitator to reach the speed of 800-1000r / min, disperse at high speed for half an hour, and then pass through the grinding equipment After grinding, input the mixture into the reactor, raise the temperature to 95°C~105°C, and keep th...

Embodiment 1

[0048] The raw material formula of exposed one-component polyurethane waterproof coating is as follows:

[0049] Table 1:

[0050]

[0051] Correspondingly, the preparation method is:

[0052] (1) Add 25 parts of DL-1000D, 180 parts of DL-2000D, 25 parts of EP-330NG, 130 parts of chlorinated paraffin, 300 parts of talcum powder, and 5 parts of carbon black into the dispersion kettle, and start the agitator to reach a speed of 800~1000r / min, disperse at high speed for half an hour, and then grind the mixture through the grinding equipment and input it into the reaction kettle, raise the temperature to 95℃~105℃, keep the vacuum pressure at -0.08Mpa~-0.09MPa and dehydrate for 2.5h;

[0053] (2) After the vacuum dehydration is completed, lower the temperature to 60°C, add 76 parts of MDI-50, and raise the temperature to 80°C at the same time, and keep it warm for 3 hours;

[0054] (3) After the reaction is completed, cool the material to 60°C to 65°C, add 0.5 parts of dibuty...

Embodiment 2

[0061] The raw material formula of exposed one-component polyurethane waterproof coating is as follows:

[0062] table 3:

[0063] raw material

parts by mass

Polyether diol DL-1000D

30 copies

Polyether diol DL-2000D

200 copies

Polyether Triol EP-330NG

40 copies

Chlorinated paraffin

130 copies

Kaolin (1250 mesh)

320 copies

5 --> carbon black

5 copies

MDI-50

80 copies

Bismorpholino diethyl ether

0.7 parts

1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanuric acid

8 servings

2-(2H-Benzotriazol-2-yl)-4,6-di-t-amylphenol

10 copies

Dibasic acid ester

90 copies

[0064] Correspondingly, the preparation method is:

[0065] (1) Add 30 parts of DL-1000D, 200 parts of DL-2000D, 40 parts of EP-330NG, 130 parts of chlorinated paraffin, 320 parts of kaolin, and 5 parts of carbon black into the dispersion kettle, and start the agitator to reach a speed...

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PUM

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Abstract

The present invention discloses an exposed mono-component polyurethane waterproof coating and a preparation method therefor. The coating is prepared from the following raw materials: polyether polyol, chlorinated paraffin, filler, carbon black, isocyanate, a catalyst, an antioxidant, an ultraviolet absorbent and an environmental-friendly solvent. The preparation method comprises: 1) uniformly dispersing polyether polyol, chlorinated paraffin, the filler and carbon black, and grinding and dewatering the mixture; 2) adding isocyanate and fully performing reaction; 3 ) reducing the temperature, adding the catalyst, the antioxidant, the ultraviolet absorbent and the environmental-friendly solvent and fully stirring; and 4) debubbling, stopping stirring and discharging. The exposed mono-component polyurethane waterproof coating prepared by the invention has excellent heat aging resistance and ultraviolet aging resistance. After the coating is applied to the surface of a base face of a building, a protective layer is not required further, so that the cost is lowered; The coating does not contain free toluene diisocyanate (TDI) and uses the environmental-friendly solvent to reduce harm on construction personnel, and the viscosity of the polyurethane coating is controlled between 5000MPa.s and 8000MPa.s at room temperature, so that the workability is good.

Description

technical field [0001] The invention relates to an exposed one-component polyurethane waterproof coating and a preparation method thereof. Background technique [0002] At present, polyurethane waterproof coatings in the domestic building waterproof material market mainly include two-component polyurethane waterproof coatings, water-curing polyurethane waterproof coatings, and single-component moisture-curing polyurethane waterproof coatings. The two-component polyurethane waterproof coating needs to be used after mixing components A and B in a certain proportion, which will cause inconvenience in construction, and the use time should not exceed 30 minutes, otherwise it will be difficult to construct due to the curing reaction. Water-cured polyurethane waterproof coatings are subject to various factors. Influence, film formation and foaming are difficult to control. The development trend of single-component polyurethane waterproof coatings is good. The country has further i...

Claims

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Application Information

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IPC IPC(8): C09D175/08C09D7/12C09D7/00C08G18/48
Inventor 马俊
Owner 大禹九鼎新材料科技有限公司
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