High-strength and high-water-resistance polymer emulsion building waterproof coating and preparation method thereof

A technology of polymer emulsion and building waterproofing, applied in the direction of coating, etc., can solve the problems of easy falling of construction roller coating, low tensile strength, poor adhesion, etc., to solve the problem of no strength, reduce water absorption, strength small loss effect

CN109135460AActive Publication Date: 2019-01-04TANGSHAN DONGFANG YUHONG WATERPROOF TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-01-04

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Abstract

The invention discloses a high-strength and high-water-resistance polymer emulsion building waterproof coating and a preparation method thereof. The coating includes, by weight, 300-400 parts of firstpure acrylic emulsion, 50-150 parts of second pure acrylic emulsion, 1-4 parts of a coupling agent, 5-10 parts of dispersant, 3-6 parts of defoaming agent, 80-110 parts of water, 3-7 parts of thickening agent, 350-550 parts of inorganic filler, and 1-2 parts of preservative. The two types of pure acrylic emulsion different in property are compounded, the waterproof coating is prepared without adding any plasticizer, coalescing agents, alcohol antifreeze agents and other volatile auxiliaries, requirements of 300% elongation at break and the -20 DEG C low-temperature flexibility index are met,the VOC content is low, the ammonia content is low, the environmental protection performance is excellent, the thermal stability is high and ageing does not easily occur.
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Description

technical field

[0001] The invention belongs to the field of waterproof materials, and more specifically relates to a high-strength and high-water-resistance polymer emulsion building waterproof coating and a preparation method thereof. Background technique

[0002] Polymer emulsion architectural waterproof coating is a one-component water-emulsion waterproof coating made of polymer emulsion as the main raw material and adding other additives. Due to the high elongation of the coating film, it has good cracking resistance of the base layer. It is ready-to-use, easy to construct, and is generally used in building waterproofing projects in non-long-term immersion environments. It is generally called acrylic waterproof coatings on the market. Chinese patent application CN201610012228.1 discloses that the waterproof coating made of acrylic acid emulsion and barium sulfate as the main raw materials has good acid and alkali resistance, and organic bentonite is added to prevent del...

Examples

Embodiment approach

[0065] ① if figure 1 As shown, measure deionized water, Rohm and Haas 731A dispersant, and BASF 2706 defoamer into the liquid material mixing tank, turn on the disperser in the mixing tank, adjust the speed at 300r / min, and stir for 2 minutes.

[0066] ② Measure Dow 8556 Emulsion, Dow 1791 Emulsion and Dow Corning Z6040 Coupling Agent, add it into the liquid material mixing tank, adjust the speed to 500r / min and stir for 5 minutes.

[0067] ③ Measure kaolin, precipitated barium sulfate, and industrial grade potassium tripolyphosphate KTPP and slowly add to the mixing tank, adjust the speed to 800r / min and stir for 10 minutes.

[0068] ④ Measure Rohm and Haas RM-8W thickener, Rohm and Haas RM-2020 thickener, and Sol MBS preservative, add it to the liquid material mixing tank and keep stirring at 800r / min for 5 minutes.

[0069] ⑤ Reduce the rotation speed to 300r / min and stir for 3 minutes to mechanically defoam to obtain a one-component waterproof coating for finished product...