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Application of acrylic water-absorbent resin in single-component polyurethane waterproof coating and single-component polyurethane waterproof coating and preparation method of single-component polyurethane waterproof coating

A polyurethane waterproof and water-absorbing resin technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as unsuitable moisture

Inactive Publication Date: 2019-05-03
BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-absorbing resin in the above scheme is not suitable for controlling the moisture in the one-component polyurethane waterproof coating

Method used

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  • Application of acrylic water-absorbent resin in single-component polyurethane waterproof coating and single-component polyurethane waterproof coating and preparation method of single-component polyurethane waterproof coating
  • Application of acrylic water-absorbent resin in single-component polyurethane waterproof coating and single-component polyurethane waterproof coating and preparation method of single-component polyurethane waterproof coating
  • Application of acrylic water-absorbent resin in single-component polyurethane waterproof coating and single-component polyurethane waterproof coating and preparation method of single-component polyurethane waterproof coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Using acrylic acid (AA) and acrylamide (AM) as monomers, using N,N'-methylenebisacrylamide (NMBA) as a polymeric crosslinking agent, the concentration of the acrylic acid is 20%, and the concentration of acrylamide is 5%. , the concentration of N,N'-methylenebisacrylamide is 0.5%, and the polyacrylic acid water-absorbent resin 1 is prepared by the inverse suspension method, wherein the cross-linked polymer accounts for 8% of the total amount of the polyacrylic acid water-absorbent resin.

[0029] Further make one-component polyurethane waterproof paint, comprise the component of following parts by weight:

[0030]

[0031]

Embodiment 2

[0033] Using sodium acrylate as a monomer and N,N'-methylenebisacrylamide as a crosslinking agent, the concentration of sodium acrylate is 25%, and the concentration of N,N'-methylenebisacrylamide is 0.3%. The sodium polyacrylate water-absorbent resin 2 was prepared by the inverse suspension method, wherein the cross-linked polymer accounted for 5% of the total amount of the sodium polyacrylate water-absorbent resin 2 .

[0034] Further make one-component polyurethane waterproof paint, comprise the component of following parts by weight:

[0035]

Embodiment 3

[0037] Acrylic acid and maleic anhydride are used as monomers, and N,N'-methylenebisacrylamide is used as a crosslinking agent. The concentration of acrylic acid is 20%, the concentration of maleic anhydride is 5%, and the concentration of N,N'-methylene The base bisacrylamide concentration is 0.5%, and the polyacrylic acid-maleic anhydride water-absorbing resin 3 is prepared, wherein the cross-linked polymer accounts for 6% of the total amount of the polyacrylic acid-maleic anhydride water-absorbing resin 3.

[0038] Further make one-component polyurethane waterproof paint, comprise the component of following parts by weight:

[0039]

[0040]

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Abstract

The invention belongs to the field of waterproof materials, and relates to application of acrylic water-absorbent resin in a single-component polyurethane waterproof coating and the single-component polyurethane waterproof coating and a preparation method of the single-component polyurethane waterproof coating. The acrylic water-absorbent resin is at least one of the following partially cross-linked polymers: sodium polyacrylate, an acrylic acid- acrylamide copolymer and an acrylic acid -maleic anhydride copolymer, and the cross-linked polymer accounts for 1-10% of the total amount of the acrylic water-absorbent resin. The method can effectively solve the problem of residual moisture of a polyurethane waterproof material, the phenomena of too much viscosity increase and excessive extensionof the waterproof material in the storage process are effectively solved, the stable single-component polyurethane waterproof coating capable of being stably stored for a long time is formed, and thestable single-component polyurethane waterproof coating is suitable for water proofing work of a kitchen, a bathroom, a subway, an urban underground comprehensive pipe gallery, a tunnel, an underground engineering and the like.

Description

technical field [0001] The invention belongs to the field of waterproof materials, and more specifically relates to the application of an acrylic water-absorbing resin in a one-component polyurethane waterproof coating, a one-component polyurethane waterproof coating and a preparation method thereof. Background technique [0002] Polyurethane waterproof coatings include one-component waterproof coatings and two-component waterproof coatings. Two-component waterproof coatings need to be configured on site, which is likely to cause a ratio imbalance, thereby affecting the waterproof performance. One-component waterproof coatings are ready-to-use and easy to apply, so they are more widely used. [0003] However, in the process of preparing a one-component waterproof coating, a small amount of moisture will greatly affect the storage stability, so it is very important to control the moisture in the system. [0004] At present, there are two main methods to control moisture: ch...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/61C09D7/65C08F220/06C08F220/56C08F222/38
Inventor 杨旷王新锋郑先军李红英
Owner BEIJING ORIENTAL YUHONG WATERPROOF TECH CO LTD
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