Anti-sagging polyurethane-modified asphalt waterproof adhesive coating for side wall

A polyurethane modification and anti-sag technology, applied in asphalt coatings, coatings and other directions, can solve the problems of easy migration or even precipitation, affecting the anti-aging performance of coatings, affecting the performance of coatings, etc., to achieve excellent waterproof effect, good protection effect, Avoiding the effect of coil slippage

Active Publication Date: 2021-02-09
北京金盾建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The rubber and asphalt in the rubber asphalt coating are directly added into the system, which cannot form a uniform and stable system, resulting in poor coating performance and difficult storage; in addition, the silica, pigments and fillers in the system are also directly added , it is easy to agglomerate and affect the performance o

Method used

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  • Anti-sagging polyurethane-modified asphalt waterproof adhesive coating for side wall
  • Anti-sagging polyurethane-modified asphalt waterproof adhesive coating for side wall
  • Anti-sagging polyurethane-modified asphalt waterproof adhesive coating for side wall

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0042]Preparation of modified emulsified asphalt:

[0043]Modified emulsified asphalt I:

[0044](1) Take 40 parts of asphalt, 5 parts of SBR rubber, 1 part of tall oil sulfonate, 0.05 parts of polyurethane, and 35 parts of deionized water. First put the asphalt into the reactor, heat up to 200±10℃, and then add rubber , Stir for 2h, turn on the colloid mill, and grind for 60min;

[0045](2) Add tall oil sulfonate and polyurethane into water at 40°C to make soap;

[0046](3) The mixture in step (1) and the soap in step (2) are simultaneously added to a colloid mill and ground uniformly to obtain a modified emulsified asphalt I.

[0047]Modified emulsified asphalt II:

[0048](1) Take 45 parts of asphalt, 7 parts of SBS rubber, 1 part of alkyl benzene sulfonate, 1 part of alkyl sulfate, 0.06 part of polyacrylamide, 40 parts of deionized water, first put the asphalt into the reactor, and heat up To 200±10℃, then add rubber, stir for 3h, turn on the colloid mill, and grind for 30min;

[0049](2) Add tall o...

Example Embodiment

[0059]Example 1

[0060]Weigh 30 parts of polyurethane modified acrylate emulsion, 20 parts of modified emulsified asphalt I, 20 parts of anti-aging modified nano silica, 0.5 parts of defoamer BYK3455, 0.1 part of hydroxymethyl cellulose, 1 part of silicic acid Magnesium aluminum, first add the polyurethane modified acrylate emulsion and modified emulsified asphalt into the mixing tank, mix well, then add the anti-aging modified filler to fully disperse evenly, and then add the defoamer, cellulose and drying accelerator in sequence. Just stir evenly.

Example Embodiment

[0061]Example 2

[0062]Weigh 50 parts of polyurethane modified acrylate emulsion, 28 parts of modified emulsified asphalt III, 29 parts of anti-aging modified nano silica, 0.9 parts of defoamer BYK3455, 0.5 parts of hydroxyethyl cellulose, 2.5 parts of silicic acid Magnesium aluminum and 9 parts of deionized water, first add the polyurethane modified acrylate emulsion, modified emulsified asphalt and deionized water into the mixing tank, mix well, then add the anti-aging modified filler, fully disperse it, and then add it in order Stir the foaming agent, cellulose and drying accelerator evenly.

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Abstract

The invention belongs to the technical field of coatings, and particularly relates to an anti-sagging polyurethane-modified asphalt waterproof adhesive coating for side walls. The coating comprises the following components in parts by weight: 30-60 parts of polyurethane-modified acrylate emulsion, 20-30 parts of modified emulsified asphalt, 20-30 parts of anti-aging modified filler, 0.5-1 part ofdefoaming agent, 0.1-0.5 part of cellulose, 1-3 parts of drying accelerator and 0-10 parts of deionized water. According to the waterproof adhesive coating, the polyurethane-modified acrylic emulsionserves as a matrix emulsion, the high and low temperature resistance of the matrix emulsion is superior to that of the acrylic emulsion, asphalt is added in the form of the modified emulsified asphalt, mixing and dissolving of the asphalt and a system are better facilitated, and the waterproof effect, the adhesion to a wall and the aging resistance can be effectively improved in cooperation with the anti-aging modified filler.

Description

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Claims

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Application Information

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Owner 北京金盾建材有限公司
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