Polymer cement waterproof paint and method for preparing waterproof coating layer

A waterproof coating and polymer technology, applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problems of large residual stress of the coating, large shrinkage of cement, and reduced service life, so as to improve the use of Long life, not easy to crack, and reduce the effect of stress residue

Active Publication Date: 2013-01-23
CHANGSHA DAYU BUILDING MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of polymer cement waterproof coating has good weather resistance and alkali resistance, but during the curing process of this kind of coating, the shrinkage rate of cement is relatively large, so the residual stress of the coating after curing is relatively large. After a period of use, The paint film is prone to cracking, which affects the waterproof effect and reduces the service life

Method used

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  • Polymer cement waterproof paint and method for preparing waterproof coating layer
  • Polymer cement waterproof paint and method for preparing waterproof coating layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1. Preparation of polymer cement waterproof coating

[0048] Preparation of component A

[0049] Add 12kg of deionized water in the liquid stirring tank, open the stirring tank, set the stirring speed as 80 rpm, then add 82kg of acrylic acid emulsion in the stirring tank and continue to stir for 20 minutes, then add 3kg of nano-titanium dioxide, 1.5kg of dispersant and 1.5kg of preservative were stirred for 30 minutes to obtain component A.

[0050] Preparation of component B

[0051] Add 91.8kg of Portland cement into the twin-shaft powder mixer for stirring, then add 37.5kg of calcium carbonate powder and 15kg of silicon micropowder, continue stirring for 20 minutes, add 4.5kg of shrinkage reducing agent, 1.2kg of water reducing agent and stir for 60 minutes , to obtain component B.

[0052] 2. Coating

[0053] Mix component A and component B to obtain a waterproof coating, coat the above-mentioned flexible waterproof coating with a thickness of 2 mm on the surfac...

Embodiment 2～ Embodiment 5

[0055] The polymer cement waterproof coating formula that above-mentioned 4 embodiments prepare is listed in Table 1, and the preparation method of embodiment 3~embodiment 5 is identical with embodiment 1, and the preparation method of the component B of embodiment 2 is identical with embodiment 1, Component A preparation method is as follows:

[0056] Preparation of component A

[0057] Add deionized water to the liquid stirring tank, open the stirring tank, set the stirring speed to 80 rpm, then add acrylic acid emulsion to the stirring tank and continue stirring for 20 minutes, then add nano-titanium dioxide and dispersant to the stirring tank in sequence, After stirring for 30 minutes, component A was obtained.

[0058] The coating method of embodiment 2~embodiment 4 is identical with embodiment, and embodiment 5 is coated according to following method:

[0059] Mix component A and component B to obtain a waterproof coating, coat the above-mentioned flexible waterproof c...

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Abstract

The invention provides a polymer cement waterproof paint which comprises component A and component B, wherein the weight ratio of component A and component B is 1:(1.2-2); the component A comprises 80 wt% to 85 wt% of acrylic emulsion, 10 wt% to 15 wt% of deionized water, 1 wt% to 5 wt% of first packing, and 1 wt% to 5 wt% of a dispersing agent; and the component B comprises 50 wt% to 65 wt% of portland cement, 30 wt% to 45 wt% of second packing, 1 wt% to 5 wt% of a shrinkage reducing agent, and 0.5 wt% to 1 wt% of a water reducing agent. The invention further discloses a method for preparinga waterproof coating layer. The polymer cement waterproof coating, provided by the invention, is used for waterproof coating, and a coating layer formed after coating solidification has low probability of cracking and can keep a better waterproof effect for a long time.

Description

technical field [0001] The invention relates to the field of waterproofing, in particular to a polymer cement waterproof coating and a preparation method for the waterproof coating. Background technique [0002] Waterproof materials are widely used in the field of building material protection. After coating buildings with waterproof coatings, they can isolate the buildings from the external environment, thereby preventing the intrusion of rainwater, groundwater and other corrosive liquids and moisture in the air into the buildings. Corrosion caused by materials, prolonging the service life of building materials. [0003] Waterproof materials mainly include waterproof coatings and waterproof membranes. Among them, waterproof membranes mainly include asphalt waterproof membranes, modified asphalt waterproof membranes, polymer waterproof membranes, etc. The construction process of waterproof membranes is complicated, and the requirements for construction personnel are high, so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04
CPCC04B41/009C04B28/04C04B41/52Y02W30/91C04B14/28C04B14/305C04B18/146C04B20/0076C04B20/008C04B24/2641C04B40/0028C04B2103/302C04B2103/408C04B2103/58C04B2103/60C04B24/02C04B24/122C04B41/483C04B41/5079C04B2111/27C04B2111/50C04B41/5035C04B41/5076C04B28/00
Inventor 曹迈宇
Owner CHANGSHA DAYU BUILDING MATERIALS TECH
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