Retarding self-closing polymer cement waterproof coating

A self-closing, polymer technology, used in the chemical industry, can solve the problems of self-leveling adjustment, fast solidification of self-closing polymer cement waterproof coatings, etc., and achieve the effect of ensuring construction safety.

Active Publication Date: 2014-12-03
大岩(上海)建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a slow-setting self-closing polymer cement waterproof coating that solves the problems of fast solidification and poor self-leveling of the self-closing polymer cement waterproof coating. Self-closing polymer cement waterproof coating has good self-closing (self-healing), and at the same time can achieve a long setting time to cause self-leveling of the coating, becoming a good construction property with retarding function Self-closing polymer cement waterproof coating, and other properties remain good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A slow-setting self-closing polymer cement waterproof coating, prepared from the following components (by weight):

[0039] Liquid material:

[0040] Polymer emulsion 80 parts

[0041] Wetting agent 0.2 parts

[0042] 2 parts plasticizer

[0043] 0.2 parts of defoamer

[0044] 15 parts of water

[0045] Powder:

[0046] 35 parts of cement

[0047] Quartz powder 32 parts

[0048] Filling 30 parts

[0049] Active masterbatch FLW 4 parts

[0050] Retardant benzylnaphthalenesulfonic acid formaldehyde condensate 0.3 parts

[0051] The preparation method of above-mentioned coating comprises the steps:

[0052] (1) Preparation of liquid material components

[0053] Add 15 parts of water, 0.2 parts of wetting agent SN-WET992, 1 part of dibutyl phthalate, 1 part of trimethylpentanediol diisobutyrate, and 0.2 parts of silicone defoamer into the stirring tank Stir for 30 minutes, then add 50 parts of ethylene-vinyl acetate emulsion and 30 parts of acrylate emulsion and...

Embodiment 2

[0058] A slow-setting self-closing polymer cement waterproof coating, prepared from the following components (by weight):

[0059] Liquid material:

[0060]Polymer emulsion 80 parts

[0061] Wetting agent 0.2 parts

[0062] 2 parts plasticizer

[0063] 0.2 parts of defoamer

[0064] 15 parts of water

[0065] Powder:

[0066] 35 parts of cement

[0067] Quartz powder 32 parts

[0068] Filling 30 parts

[0069] Active masterbatch FLW 4 parts

[0070] 0.6 parts of retarder polyacrylamide

[0071] The polymer emulsion is one or more mixtures of ethylene-vinyl acetate emulsion and acrylate emulsion, and the wetting agent is wetting agent W-205, wetting agent SILCO WET 065 or wetting agent Any one of SN-WET992, the plasticizer is one or more of dibutyl phthalate, dioctyl phthalate, trimethylpentanediol diisobutyrate The mixture, the defoamer is a silicone defoamer, and the filler is one or a mixture of calcium carbonate, talc, kaolin.

[0072] Prepare the above-mentione...

Embodiment 3

[0075] A slow-setting self-closing polymer cement waterproof coating, prepared from the following components (by weight):

[0076] Liquid material:

[0077] Polymer emulsion 80 parts

[0078] Wetting agent 0.2 parts

[0079] 2 parts plasticizer

[0080] 0.2 parts of defoamer

[0081] 15 parts of water

[0082] Powder:

[0083] 35 parts of cement

[0084] Quartz powder 32 parts

[0085] Filling 30 parts

[0086] Active masterbatch FLW 4 parts

[0087] 0.4 part of retarder alkyl phenyl sulfonate

[0088] The polymer emulsion is one or more mixtures of ethylene-vinyl acetate emulsion and acrylate emulsion, and the wetting agent is wetting agent W-205, wetting agent SILCO WET 065 or wetting agent Any one of SN-WET992, the plasticizer is one or more of dibutyl phthalate, dioctyl phthalate, trimethylpentanediol diisobutyrate The mixture, the defoamer is a silicone defoamer, and the filler is one or a mixture of calcium carbonate, talc, kaolin.

[0089] Prepare the above-...

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PUM

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Abstract

The invention discloses a retarding self-closing polymer cement waterproof coating which comprises two components, namely powder material and liquid material, wherein the liquid material comprises a polymer emulsion, a wetting agent, a plasticizing agent, an organic silicon defoaming agent and water; the powder material comprises cement, quartz powder, a filler, an active compound and a retarding agent; and the weight ratio of the powder material to the liquid material is 1:1. According to the retarding self-closing polymer cement waterproof coating, after the two components are stirred and mixed, a highly dispersed retarding agent is contained, the retarding agent fast emulsifies moisture contained in a mixture to generate double electric layers, and the double electric layers can prolong the setting time of a coated film by reducing the interaction of the cement and the water, so that the construction safety is ensured; more unhydrated cement can be retained in the coated film because of the existence of the retarding agent, and more crystals can be generated to intensify self closure when the coated film cracks to cause water leakage; the self closure of the coated film is less than 6 hours; and the initial setting time of the coating is more than 50 minutes.

Description

[0001] technical field [0002] The invention belongs to the field of chemical industry, and in particular relates to a self-closing polymer cement waterproof coating, in particular to a retarding self-closing polymer cement waterproof coating. [0003] Background technique [0004] Polymer cement waterproof coating (referred to as JS waterproof coating) is a two-component coating composed of polymer emulsion (acrylate emulsion, ethylene-vinyl acetate emulsion, etc.) and cement, quartz powder, inorganic fillers and additives. Self-closing (self-healing) polymer cement waterproof coating means that under the action of water, the coating film of the coating has the property of self-healing and sealing the cracks of the coating film through physical and chemical reactions. The self-closing property is expressed by the self-sealing (self-healing) time of the cracks in the coating film under specified conditions. At present, some domestic enterprises have successfully developed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
Inventor 吴蓁赵国元张英强余金妹
Owner 大岩(上海)建筑材料有限公司
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