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Back water surface waterproof coating and preparation method thereof

A technology of waterproof coating and backwater surface, applied in the field of coatings, can solve the problems of backwater coating easy to fall off, difficult material and base layer, poor water resistance, impermeability and durability, etc., achieve broad market application prospects, improve bonding strength, The effect of simple preparation method

Inactive Publication Date: 2019-07-05
岳阳市科兴防水材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are different shrinkage ratios between the waterproof layer and the original concrete base in the later stage. At the same time, it is difficult for the material and the base to form a dense whole due to insufficient adhesion. Under the long-term action of water pressure, the backwater coating is easy to fall off and crack. Waterproof failure
[0004] The most common acrylic emulsion and polyurethane waterproof coatings have good toughness, high elongation, and good crack resistance, but they are used on the back surface of the basement, and their water resistance, impermeability, and durability are relatively poor, and they cannot achieve ideal waterproofing. The anti-seepage effect, as well as common permeable crystalline waterproof coatings and various rigid waterproof mortars, have excellent impermeability, water resistance, and durability that are incomparable to organic waterproof coatings, but due to the limitation of elongation and tensile strength, it is easy to change structure cracks and leaks
In addition, there are some polymer cement waterproof coatings, but there are still many restrictions on the construction environment temperature and the moisture content of the construction wet base surface

Method used

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  • Back water surface waterproof coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment provides a kind of water-repellent paint on the back surface, and the raw material components include:

[0033] 20 parts by weight of CYDHD-220 epoxy resin curing agent, 0.2 parts by weight of NXZ defoamer, 43 parts by weight of 800 mesh heavy calcium, 4 parts by weight of titanium dioxide, 0.2 parts by weight of 5040 dispersant, 22 parts by weight of water, CYDW-100 ring 90 parts by weight of oxygen resin.

[0034] The preparation method of described back water surface waterproof paint, comprises the steps:

[0035] (1) Add water to CYDHD-220 epoxy resin curing agent, stir evenly to obtain S1;

[0036] (2) Add NXZ defoamer and 5040 dispersant to S1 in sequence, and stir at a speed of 100 rpm for 15 minutes to obtain S2;

[0037] (3) Add heavy calcium and titanium dioxide successively to S2, and stir at a speed of 800 rpm for 25 minutes to obtain A;

[0038] (4) Mix and stir A and CYDW-100 epoxy resin evenly to obtain the waterproof coating for the ba...

Embodiment 2

[0042] This embodiment provides a kind of water-repellent paint on the back surface, and the raw material components include:

[0043] 22 parts by weight of CYDHD-220 epoxy resin curing agent, 0.4 parts by weight of NXZ defoamer, 49 parts by weight of 1600 mesh heavy calcium, 6 parts by weight of titanium dioxide, 0.4 parts by weight of 5040 dispersant, 30 parts by weight of water, methyl silicic acid Sodium 1.2 parts by weight, CYDW-100 epoxy resin 110 parts by weight.

[0044] The preparation method of described back water surface waterproof paint, comprises the steps:

[0045] (1) Add water to CYDHD-220 epoxy resin curing agent, stir evenly to obtain S1;

[0046] (2) Add NXZ defoamer, 5040 dispersant and sodium methyl silicate to S1 in sequence, and stir at 200 rpm for 5 minutes to obtain S2;

[0047] (3) Add heavy calcium and titanium dioxide successively to S2, and stir for 15 minutes at a speed of 1000 rpm to obtain A;

[0048] (4) Mix and stir A and CYDW-100 epoxy re...

Embodiment 3

[0052] This embodiment provides a kind of water-repellent paint on the back surface, and the raw material components include:

[0053] 21.7 parts by weight of CYDHD-220 epoxy resin curing agent, 0.3 parts by weight of NXZ defoamer, 46 parts by weight of 1250 mesh heavy calcium, 5 parts by weight of titanium dioxide, 0.3 parts by weight of 5040 dispersant, 26.5 parts by weight of water, methyl silicic acid 0.8 parts by weight of sodium, and 100 parts by weight of CYDW-100 epoxy resin.

[0054] The preparation method of described back water surface waterproof paint, comprises the steps:

[0055] (1) Add water to CYDHD-220 epoxy resin curing agent, stir evenly to obtain S1;

[0056] (2) Add NXZ defoamer, 5040 dispersant and sodium methyl silicate to S1 in turn, and stir at 200 rpm for 10 minutes to obtain S2;

[0057] (3) Add heavy calcium and titanium dioxide successively to S2, stir at a speed of 1000rpm for 20min, and obtain A;

[0058] (4) Mix and stir A and CYDW-100 epoxy...

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Abstract

The invention relates to a back water surface waterproof coating and a preparation method thereof, wherein the back water surface waterproof coating comprises the following raw materials in parts by weight: 20-22 parts of an epoxy resin curing agent, 0.2-0.4 part of a defoaming agent, 43-49 parts of heavy calcium carbonate, 4-6 parts of titanium dioxide, 0.2-0.4 part of a dispersing agent, 22-30 parts of water and 90-110 parts of epoxy resin. According to the back water surface waterproof coating, the bonding strength with the concrete base surface is obviously improved through the synergisticaction of each component; the back water surface waterproof coating has the advantages of high curing speed, strong permeability to the concrete base surface, good toughness and good water resistance; the back water surface waterproof coating has an excellent waterproof effect on the water facing surface and the back water surface; in addition, the back water surface waterproof coating can be constructed on a wet base surface with the water content of less than 40%, and the construction environment temperature is not strictly required. The preparation method is simple and has wide market application prospect.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a backwater surface waterproof coating and a preparation method thereof. Background technique [0002] The side of the building structure that touches the water is the water-facing side, and vice versa is the back-water side. For example: the side of the basement outdoor wall and floor in contact with the soil is the water-facing surface, and the indoor side is the water-facing surface; the wall in the bathroom is the water-facing surface, and the wall on the side of the living room or bedroom is the water-facing surface; the roof of the building is the water-facing surface. The indoor ceiling of the top-floor residents is the back side of the water. [0003] There are different shrinkage ratios between the waterproof layer and the original concrete base in the later stage. At the same time, it is difficult for the material and the base to form a dense whole due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/61
CPCC08K2003/2241C08K2003/265C08K2201/003C09D7/61C09D7/69C09D163/00C08K3/26C08K3/22
Inventor 李为
Owner 岳阳市科兴防水材料有限公司