Exposed polyurea waterproof repair coating, and preparation and construction method thereof

An exposed polyurea technology, applied in polyurea/polyurethane coatings, coatings, building maintenance, etc., can solve problems such as structural safety affected, poor adhesion of substrates, waste pollution, etc.

Inactive Publication Date: 2019-11-12
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

As far as the current waterproof repair materials are concerned, the main problems are poor durability, poor adhesion to the base surface (easy to peel and delaminate, resulting in water channeling), inability to be exposed (poor UV resistance), and finally delamination in a short period of time. Problems such as cracking and even re-leakage are not uncommon; in addition, in order to completely solve the problem of leakage, the construction plan of most waterproof repair materials needs to be chiseled, that is, the decorative layer or other structural layers must be chiseled and removed before waterproofing, resulting in There are a series of problems such as long construction period, high cost, disturbing noise and vibration, impact on structural safety, and large waste pollution. Moreover, although the spray polyurea technology has good material performance, it needs to be sprayed with heavy special equipment. Suitable for large-scale engineering construction, not suitable for small area or small-scale repair work

Method used

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  • Exposed polyurea waterproof repair coating, and preparation and construction method thereof
  • Exposed polyurea waterproof repair coating, and preparation and construction method thereof
  • Exposed polyurea waterproof repair coating, and preparation and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] An exposed polyurea waterproof repair coating, which is used by mixing and deploying two components A and B. The compositions of A and B are as follows in parts by mass:

[0052] A component:

[0053] 80 parts of polyaspartic ester resins;

[0054] 10 parts of polyether polyamine;

[0055] Dispersant 0.2 part;

[0056] Thixotropic agent 0.7 part;

[0057] 2.0 parts of coupling agent;

[0058] 0.1 part of defoamer;

[0059] 0.3 parts of plasticizer;

[0060] Leveling agent 0.2 part;

[0061] 8.5 parts of titanium dioxide.

[0062] B component: polyether modified HDI trimer.

[0063] The polyether polyamine used is polyetheramine D230; the dispersant is dioctadecylmethyl tertiary amine; the thixotropic agent is fumed silica; the coupling agent is KH550; the defoamer is silicone defoamer; The plasticizer is dioctyl phthalate; the leveling agent is polyacrylate leveling agent.

[0064] Mix components A and B evenly in a mass ratio of 2:1 to obtain the exposed poly...

Embodiment 2

[0075] An exposed polyurea waterproof repair coating, which is used by mixing and deploying two components A and B. The compositions of A and B are as follows in parts by mass:

[0076] A component:

[0077]

[0078] B component: polyether modified HDI trimer.

[0079] The raw materials used in components A and B are the same as in Example 1, and components A and B are also mixed uniformly in a mass ratio of 2:1 to obtain the exposed polyurea waterproof repair coating of this example.

[0080] The preparation method of component A is: at room temperature, add polyaspartic acid ester resin, dispersant, thixotropic agent, coupling agent, defoamer, plasticizer, leveling agent, titanium dioxide in sequence to four In the flask, fully stir and disperse evenly, then grind to 100 mesh and discharge.

[0081] The preparation method of B component is the same as that of Example 1.

[0082] The difference between component A of this example and Example 1 is that Example 1 contains...

Embodiment 3

[0084] An exposed polyurea waterproof repair coating, which is used by mixing and deploying two components A and B. The compositions of A and B are as follows in parts by mass:

[0085] A component:

[0086] 80 parts of polyaspartic acid ester resin A;

[0087] 15 parts of polyaspartic acid ester resin B;

[0088] 0.5 parts of dispersant;

[0089] Thixotropic agent 0.5 part;

[0090] 1.5 parts of coupling agent;

[0091] 0.3 part of defoamer;

[0092] 0.1 parts of plasticizer;

[0093] Leveling agent 0.5 part;

[0094] Titanium dioxide 8.0 parts.

[0095] B component: polyether modified IPDI trimer.

[0096] The polyether polyamine used is polyetheramine D230; the dispersant is cetyl dimethyl tertiary amine; the thixotropic agent is bentonite; the coupling agent is KH570; the defoamer is silicone defoamer; plasticizer It is dibutyl phthalate; the leveling agent is polyacrylate leveling agent.

[0097] Mix components A and B evenly in a mass ratio of 2:1 to obtain the...

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Abstract

The invention discloses an exposed polyurea waterproof repair coating, and preparation and construction method thereof. The exposed polyurea waterproof repair coating is prepared from a component A and a component B. The component A is prepared from the following components: polyaspartic ester resin, polyether polyamine, a dispersant, a plasticizer, a defoamer, a coupling agent, solid filler, a thixotropic agent and a leveling agent; the component B is a curing agent; and the mass ratio of the component A to the component B is (1.5-3):1. The invention further discloses the preparation method of the waterproof repair coating and the construction method of the waterproof repair coating at the same time. The exposed polyurea waterproof repair coating has excellent weather resistance and waterproof sealing performance, no hazardous substances volatilization, no yellowing, no peeling and firm bonding. When the coating is used for construction, a base surface does not need to be beaten and chiseled, the coating can be sprayed or scraped manually, is fast and efficient, waterproof thoroughly and durable, environmentally safe, and can be used in new waterproofing projects and building repair projects.

Description

technical field [0001] The invention belongs to the technical field of waterproof materials, and in particular relates to an exposed polyurea waterproof repair coating and a preparation and construction method thereof. Background technique [0002] At present, the building leakage rate remains high. According to reliable data, the national roof leakage rate is 95%. Therefore, building leakage repair will be or has become an important part of building repair. For leakage repair, a waterproof repair material with excellent comprehensive performance is the key to leakage control. As far as the current waterproof repair materials are concerned, the main problems are poor durability, poor adhesion to the base surface (easy to peel and delaminate, resulting in water channeling), inability to be exposed (poor UV resistance), and finally delamination in a short period of time. Problems such as cracking and even re-leakage are not uncommon; in addition, in order to completely solve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/02E04B1/66E04G23/02
CPCC09D175/02E04B1/66E04G23/0296
Inventor 邓涛
Owner 大禹九鼎新材料科技有限公司
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