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Preparation method of waterproof coating

A technology of waterproof coatings and raw materials, applied in the field of building materials, can solve the problems of containing, unfavorable to human health, and unable to obtain applications, etc.

Active Publication Date: 2020-10-27
SHANGHAI YANHUANG ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, although the existing waterproof coatings are easy to construct, the raw materials contain isocyanate and other substances harmful to the human body, so on the one hand, it is not conducive to human health, and on the other hand, it cannot be applied in some fields with high environmental protection requirements.

Method used

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Examples

Experimental program
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preparation example Construction

[0021] As previously mentioned, the present invention provides a kind of preparation method of waterproof paint, and the method comprises:

[0022] (1) Mix ethyl orthosilicate, fly ash, brick slag powder and propylene glycol for 30-60 minutes;

[0023] (2) Mix the mixed solution obtained in step (1) with a silane coupling agent, then add water to carry out the first reaction for 3-5 hours, and then filter, wash and dry;

[0024] (3) mixing the first reactant obtained in step (2) with polyurethane, and performing the second reaction for 3-5h;

[0025] (4) mixing the second reactant obtained in (3) with the inorganic filler for 0.5-3h;

[0026] Wherein, the amount of each raw material is: tetraethyl orthosilicate 3-8wt%, fly ash 15-25wt%, brick slag powder 1-5wt%, propylene glycol 0.3-0.6wt%, silane coupling agent 1-4wt%, 50-65% by weight of polyurethane, and the balance is the amount of inorganic filler.

[0027] Preferably, the dosage of each raw material is: tetraethyl ort...

Embodiment approach

[0035] According to a preferred embodiment provided by the invention, the preparation method of the waterproof coating comprises:

[0036] (1) Mix ethyl orthosilicate, fly ash, brick slag powder and propylene glycol for 30-60 minutes;

[0037] The brick slag powder satisfies: calculated as oxides, the sum of chlorine, potassium, sodium and magnesium content ≥ 68wt%;

[0038] Fly ash and brick slag powder are obtained by grinding in advance, and the particle sizes of the fly ash and brick slag powder are both 1-20 μm;

[0039] (2) Mix the mixed solution obtained in step (1) with a silane coupling agent, then add water to carry out the first reaction for 3-5 hours, and then filter, wash and dry;

[0040] The silane coupling agent is aminosilane and / or epoxysilane;

[0041] The consumption of the water is 10-15wt% of the consumption of the tetraethyl orthosilicate;

[0042] (3) mixing the first reactant obtained in step (2) with polyurethane, and performing the second reaction...

Embodiment 1

[0049] (1) Mix ethyl orthosilicate, fly ash, brick slag powder and propylene glycol for 40 minutes;

[0050] (2) Mix the mixed solution obtained in step (1) with a silane coupling agent, then add water to carry out the first reaction for 4 hours, then filter, wash and dry;

[0051] The consumption of described water is 12wt% of described tetraethyl orthosilicate consumption;

[0052] (3) mixing the first reactant obtained in step (2) with polyurethane, and performing a second reaction for 4 hours;

[0053] (4) mixing the second reactant obtained in (3) with the inorganic filler for 1 hour to obtain a waterproof coating;

[0054] The inorganic filler is mica powder;

[0055] Wherein, the consumption of each raw material is: tetraethyl orthosilicate 4wt%, fly ash 20wt%, brick slag powder 2wt%, propylene glycol 0.4wt%, silane coupling agent is 1wt%, polyurethane 55wt%, the balance is the inorganic filler Dosage.

[0056] The performance test of the prepared waterproof coating...

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Abstract

The invention relates to the technical field of building materials, in particular to a preparation method of a waterproof coating. The method comprises the following steps of: (1) mixing ethyl orthosilicate, fly ash, brick residue powder and propylene glycol for 30-60 minutes; (2) mixing the mixed solution obtained in the step (1) with a silane coupling agent, adding water to carry out a first reaction for 3-5 h, and then carrying out filtration, washing and drying; (3) mixing the first reactant obtained in the step (2) with polyurethane, and carrying out a second reaction for 3-5 hours; and (4) mixing the second reactant obtained in the step (3) with an inorganic filler for 0.5-3 hours. The method is high in environmental protection property, isocyanate and other substances harmful to thehuman body do not need to be added, the waste can be fully utilized, and the utilization amount of the waste is increased on the basis that it is guaranteed that the prepared waterproof coating has good extensibility, elastoplasticity, crack resistance and weather resistance.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a preparation method of a waterproof coating. Background technique [0002] Waterproof materials refer to materials that prevent rainwater, groundwater, industrial and civil water supply and drainage, corrosive liquids, and air accumulation time, steam, etc. from intruding into buildings. Waterproof coating is a kind of waterproof material. The waterproof film formed after curing of waterproof coating has certain extensibility, elasticity and plasticity, crack resistance and weather resistance, and can play the role of waterproof, anti-seepage and protection. [0003] Waterproof paint is used in construction engineering to paint the paint on the surface of the building. After the chemical reaction between the components, a layer of film is formed to isolate the surface of the building from water, thereby playing the role of waterproof and sealing. The waterproof paint ...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/62C09D7/61
CPCC09D175/04C09D7/62C09D7/61C08L2201/08C08K2201/011C08K9/10C08K3/36C08K9/06C08K7/26C08K3/34C08K3/00C08K13/06
Inventor 张家祥
Owner SHANGHAI YANHUANG ENVIRONMENTAL TECH CO LTD
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