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A kind of aramid fiber modified polymer cement waterproof coating and preparation method thereof

A technology of aramid fibers and waterproof coatings, applied in cement coatings, anti-fouling/underwater coatings, coatings, etc., can solve the problems of low elongation and high preparation costs, and achieve enhanced compressive strength and elongation, enhanced Low temperature flexibility and bond strength, improve the effect of anti-ultraviolet aging

Active Publication Date: 2022-07-08
SHAANXI TONGYU NEW MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Glass fiber is the most widely used reinforcing fiber due to its low cost, carbon fiber has higher strength and modulus and lower elongation, but is more expensive to prepare

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] An aramid fiber modified polymer cement waterproof coating is composed of powder material and liquid material, and the weight ratio of the powder material to the liquid material is 1:0.8,

[0027] The powder, in terms of weight ratio of 100%, is composed of the following raw materials: cement 30wt%, ground calcium carbonate 20wt%, silicon micropowder 40wt%, modified aramid fiber 9.9wt%, water reducing agent 0.1wt% ;

[0028] The liquid material is composed of nanomaterial-modified ethylene-polyvinyl acetate copolymer emulsion, additives, and water, and the weight percentages of the additives and water in the nanomaterial-modified ethylene-polyvinyl acetate copolymer emulsion are as follows: penetrant 2wt%, Defoamer 0.1 wt%, film-forming aid 1 wt%, dispersant 0.5 wt%, water 1 wt%;

[0029] Wherein, the water reducing agent is polycarboxylate water reducing agent; the dispersing agent is dispersing agent 5010; the penetrating agent is 50wt% lithium silicate solution; the...

Embodiment 2

[0037] An aramid fiber modified polymer cement waterproof coating is composed of powder material and liquid material, and the weight ratio of the powder material to the liquid material is 1:1,

[0038] The powder, in a weight ratio of 100%, is composed of the following raw materials: cement 35wt%, heavy calcium carbonate 25wt%, silicon micropowder 36wt%, modified aramid fiber 3.8wt%, water reducing agent 0.2wt%;

[0039] The liquid material is composed of nanomaterial-modified ethylene-polyvinyl acetate copolymer emulsion, additives, and water, and the weight percentages of the additives and water in the nanomaterial-modified ethylene-polyvinyl acetate copolymer emulsion are as follows: penetrant 3wt%, Defoamer 0.2 wt%, film-forming aid 2 wt%, dispersant 0.8 wt%, water 2 wt%;

[0040] Wherein, the water reducing agent is polycarboxylate water reducing agent; the dispersing agent is dispersing agent 5010; the penetrating agent is 40wt% lithium silicate solution; the defoaming a...

Embodiment 3

[0048] An aramid fiber modified polymer cement waterproof coating is composed of powder material and liquid material, and the weight ratio of the powder material to the liquid material is 1:1.2,

[0049] The powder is composed of the following raw materials according to the weight ratio of 100%: cement 40wt%, heavy calcium carbonate 30wt%, silicon micropowder 23.6wt%, modified aramid fiber 6wt%, water reducing agent 0.4wt%;

[0050] The liquid material is composed of nanomaterial-modified ethylene-polyvinyl acetate copolymer emulsion, additives, and water, and the weight percentages of the additives and water in the nanomaterial-modified ethylene-polyvinyl acetate copolymer emulsion are as follows: penetrant 4wt%, Defoamer 0.3 wt%, film-forming aid 3 wt%, dispersant 1 wt%, water 3 wt%;

[0051] Wherein, the water reducing agent is polycarboxylate water reducing agent; the dispersing agent is dispersing agent 5010; the penetrating agent is 20wt% lithium silicate solution; the d...

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Abstract

The invention discloses an aramid fiber-modified polymer cement waterproof coating and a preparation method thereof. The polymer cement waterproof coating is composed of powder and liquid. The powder, calculated as 100% by weight, is composed of the following The composition of raw materials: cement 30~48wt%, heavy calcium carbonate 20~35wt%, silica micropowder 15~40wt%, modified aramid fiber 2~10wt%, water reducing agent 0.1~1wt%; The material-modified ethylene-polyvinyl acetate copolymer emulsion is composed of additives and water, and the weight percentages of the additives and water in the nanomaterial-modified ethylene-polyvinyl acetate copolymer emulsion are as follows: penetrating agent 2~5wt%, defoamer 0.1~ 0.5wt%, coalescence aid 1~5wt%, dispersant 0.5~1.5wt%, water 1~5wt%. The polymer cement waterproof coating has excellent durability, compressive strength, elongation and low temperature toughness.

Description

technical field [0001] The invention belongs to the technical field of polymer cement waterproof coatings, in particular to an aramid fiber modified polymer cement waterproof coating and a preparation method thereof. Background technique [0002] Polymer cement waterproof coating is a two-component waterproof coating integrating polymer and cement. After the coating is formed into a film, it is mainly based on a polymer network structure, and the unhydrated cement particles, cement hydration products and fillers are wrapped in the polymer film, which not only overcomes the defect of insufficient flexibility of cement-based materials, but also improves the polymer film. The emulsion coating film has the problem of poor waterproofness, high toughness and high elasticity, and also has the advantages of good adhesion to the base layer, non-toxic, odorless, green and environmental protection, and has been widely used in the field of construction engineering. However, when this t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D123/08C09D1/00C09D1/08C09D5/14C09D7/65C09D7/48
CPCC09D123/0853C09D1/00C09D1/08C09D5/14C09D7/65C09D7/48C09D7/70C08K2003/2241C08K2003/265C08L2201/08C08L77/10C08K3/26C08K3/36C08K3/22Y02W30/91
Inventor 马瑞杰毕伟涛杨欣白嘉龙山颖获
Owner SHAANXI TONGYU NEW MATERIALS CO LTD
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