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Aqueous asphalt-based epoxy resin waterproof material composition and preparation process thereof

A technology based on epoxy resin and waterproof material, which is applied in building thermal insulation materials, building structures, building components, etc., can solve problems such as insufficient low temperature flexibility or toughness, influence of waterproof material stability, and poor storage stability of emulsions. Achieve the effect of improving high temperature performance, high adhesion, excellent high and low temperature resistance

Active Publication Date: 2012-05-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN1569998A discloses a method for making waterproof materials for roads and bridges. In this method, 20 to 30 parts of chloroprene latex are mixed into ordinary emulsified asphalt. Because the latex is mixed in a large amount, the long-term storage stability of the emulsion is not good
CN1760291A discloses a kind of waterborne asphalt-based epoxy resin anticorrosion coating and its preparation method. This patent adopts epoxy resin emulsion and modified emulsified asphalt to prepare anticorrosion coating, which is only used for anticorrosion. In the composition, each component, proportioning ratio And the preparation method is determined according to the nature requirements of anti-corrosion materials. The content of SBR latex is small. SBR latex is first combined with emulsified asphalt, which will affect the stability of waterproof materials. Moreover, low temperature flexibility or toughness is not enough, so it is not suitable for use as waterproof materials.
CN1903941A discloses a kind of emulsified asphalt modified by water-based epoxy resin. The emulsified asphalt adopts a single epoxy resin emulsion to modify ordinary emulsified asphalt. It is used for the maintenance and maintenance of asphalt pavement. still insufficient
[0006] Although the cured epoxy resin has extremely strong adhesion and excellent high temperature resistance, but the toughness is too poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Preparation of emulsified asphalt: heating AH-90A base asphalt accounting for 60% weight of emulsified asphalt to 130°C to 140°C for later use; emulsifier (1831:OP-20=4:1) 0.3%, calcium chloride 0.2% , the remaining water, the soap solution is heated to 40 ℃ ~ 50 ℃, adjust the pH = 2 ~ 3, and stir evenly. Mix and emulsify base asphalt and soap liquid through a colloid mill, and defoam to obtain ordinary emulsified asphalt, and cool to room temperature for later use;

[0052] (2) Preparation of mixed emulsion: prepare epoxy resin emulsion and epoxy resin curing agent emulsion at room temperature with a ratio of 2:1, stir evenly, then adjust the pH value to 2-3, then mix epoxy resin emulsion and The mixed emulsion of epoxy resin curing agent emulsion and the emulsified asphalt prepared in (1) are added to the colloid mill in a ratio of 1:2, and the material is circulated for 3 minutes to 5 minutes to produce a mixed emulsion, which is cooled to room temperature for la...

Embodiment 2

[0058] (1) Preparation of emulsified asphalt: 110 of 60% weight of emulsified asphalt # Heat the polymer-modified asphalt to 135°C-145°C for later use; 0.4% 18331 emulsifier, 0.2% ammonium chloride, the rest of water, and heat the soap solution to 45°C-55°C, adjust the pH to 2-3, and stir evenly. Mix and emulsify the modified asphalt and the soap solution through a colloid mill to obtain a modified emulsified asphalt, and cool it to room temperature for later use;

[0059] (2) Prepare mixed emulsion: prepare epoxy resin emulsion and epoxy resin curing agent emulsion with the ratio of 2:0.8 at room temperature, stir evenly, then adjust the pH value to 2~3, then mix epoxy resin emulsion and The mixed emulsion of epoxy resin curing agent emulsion and the emulsified asphalt prepared in (1) are added to the colloid mill at a ratio of 1:2.5, and the material is circularly ground for 3 minutes to 5 minutes to prepare the mixed emulsion, and cooled to room temperature for later use; ...

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Abstract

The invention provides a high-performance aqueous asphalt-based epoxy resin waterproof material composition and a preparation process thereof. The composition comprises 45 to 55% of emulsified asphalt, 25 to 35% of cationic SBR latex, 10 to 20% of epoxy resin emulsion, 2 to 8% of epoxy resin curing agent emulsion and 0.05 to 0.15% of an antifoaming agent. A waterproof material provided in the invention has the following advantages: (1) the waterproof material has excellent resistance to high and low temperature and excellent toughness, and the material does not flow at a high temperature more than 140 DEG C, is not crisp at a low temperature of -20 DEG C and has great adhesion stress; (2) the waterproof material is environment friendly, the preparation process is simple, and a system is stable; (3) construction performance is good, and surface film formation is fast.

Description

technical field [0001] The invention belongs to road, bridge and building bonded waterproof materials, in particular to a water-based asphalt-based waterproof material compounded and modified by epoxy resin emulsion, epoxy resin curing agent emulsion and SBR latex. Background technique [0002] Petroleum asphalt used in waterproofing projects has the advantages of easy availability of raw materials and low price, and is currently the most widely used waterproofing material in waterproofing and anti-seepage projects at home and abroad. However, due to its own hot and cold brittleness, poor weather resistance, and the currently widely used on-site boiling and hot construction, it will cause air pollution, prone to fires, burns, low construction efficiency, and high labor intensity for workers. The research on emulsified asphalt and polymer modified asphalt has become a subject that people are eager to develop. [0003] In terms of asphalt-based waterproof coatings, it has rou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L63/00C08L9/06C08K5/18C08K3/24C08K5/521
Inventor 张建峰刘佳丽
Owner CHINA PETROLEUM & CHEM CORP
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