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Rubber modified asphalt waterproof coating material, preparation method and uses thereof

A technology of asphalt waterproof coating and rubber modification, which is applied in asphalt coatings, chemical instruments and methods, roofs using flexible materials, etc. Achieve the effect of ensuring storage stability, reducing high temperature viscosity, and reducing the difficulty of emulsification

Inactive Publication Date: 2019-08-16
XI NIU PI WATERPROOFING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional waterproof coatings, such as polymer cement waterproof coatings, have certain flexibility, but their fatigue resistance is poor and their elongation is limited. Under the repeated stress generated by concrete dynamics, it is easy to cause tensile and extrusion damage
[0006] 2. Poor adaptability of waterproof coating to base surface
Taking oily polyurethane as an example, the material itself has excellent performance, high mechanical strength, and high elongation, but it cannot be forcibly constructed on a high moisture content or wet base
At the same time, the application effect of traditional waterproof coatings in the field of maintenance and leakage repair of old roofing projects is not ideal, because the old roofing projects have a long service life and the base surface is severely weathered. It is difficult for traditional waterproof coatings to be compatible with this type of old base surface Effective adhesion is formed, and the waterproof ability of the coating cannot be effectively exerted
[0008] 3. Water-based materials have poor water resistance
It is easy to absorb water and return milk in a humid or water-soaked environment, resulting in a decrease in the mechanical strength of the coating, a significant decrease in elongation, and a decrease in waterproof ability

Method used

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  • Rubber modified asphalt waterproof coating material, preparation method and uses thereof
  • Rubber modified asphalt waterproof coating material, preparation method and uses thereof
  • Rubber modified asphalt waterproof coating material, preparation method and uses thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0045] figure 1 For the preparation process of the waterproof coating without adding fillers, the specific preparation process is as follows:

[0046] One: Preparation of high rubber content modified asphalt;

[0047] First, heat the asphalt to 100°C-160°C, then add rubber and asphalt regenerant, heat up, and modify at a constant temperature within the range of 180°C-200°C for 2-5 hours to obtain modified asphalt;

[0048] Two: Soap preparation;

[0049] Mix and stir water and emulsifier evenly, raise the temperature to 40°C-80°C to make soap liquid, and adjust the pH value to 9-13;

[0050] Three: Preparation of emulsified modified asphalt;

[0051] The prepared modified asphalt and soap liquid are pumped to the emulsification equipment at the same time, and emulsified by the emulsification equipment to obtain emulsified modified asphalt;

[0052] Four: add stabilizer;

[0053] Add a stabilizer to the prepared emulsified modified asphalt, adjust the pH value, and stir ev...

Embodiment 1

[0088] A rubber-modified asphalt waterproof paint, comprising the following components in weight percentage:

[0089] Petroleum Bitumen No. 110: 33%

[0090] SBS Rubber: 14%

[0091] Asphalt regenerant: 18%

[0092] Water: 30.7%

[0093] Emulsifier: 3%

[0094] Hydroxyethylcellulose: 1%

[0095] Acid: 0.3%.

[0096] Its preparation process is as follows:

[0097] One: Preparation of high rubber content modified asphalt;

[0098] First heat the asphalt to 100°C, then add rubber and asphalt regenerant, heat up, and modify at a constant temperature within the range of 200°C for 3 hours to obtain modified asphalt;

[0099] Two: Soap preparation;

[0100] Mix and stir water, emulsifier, and thickener evenly, raise the temperature to 80°C, adjust the pH value between 9-13, and prepare soap liquid;

[0101] Three: Preparation of emulsified modified asphalt;

[0102] The prepared modified asphalt and soap liquid are pumped to the emulsification equipment at the same time, an...

Embodiment 2

[0134] A rubber-modified asphalt waterproof paint, comprising the following components in weight percentage:

[0135] Petroleum Bitumen No. 90: 40%

[0136] SIS Rubber: 14%

[0137] Asphalt regenerant: 10%

[0138] Water: 30.5%

[0139] Emulsifier: 2.5%

[0140] Carboxymethylcellulose: 1.5%

[0141] Acid: 1.5%.

[0142] The preparation method is the same as in Example 1.

[0143] According to the method requirements of GB / T 16777-2008 "Experimental Methods of Building Waterproof Coatings", the product is tested. Test results of the prepared product: the solid content of the prepared waterproof coating is 67%; the water absorption rate of the waterproof coating after drying is 6.3%, the heat resistance is 90°C, the low temperature is -22°C (2h without cracks), and the bonding strength 0.58MPa, the stress relaxation is 10.2% (and does not separate from the bonding surface), the crack bridging ability is 1.5mm, and the seam deformation ability is 6500 cycles without damage...

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Abstract

The invention discloses a rubber modified asphalt waterproof coating material, which is prepared by mixing the following components: asphalt, rubber, an asphalt regenerant, an emulsifier, a stabilizer, water and other auxiliary agents. The invention further discloses a preparation method and applications of the rubber modified asphalt waterproof coating material. According to the present invention, in the rubber modified asphalt waterproof coating material preparation process, by using the asphalt regenerant, the added rubber can be fully fused with the asphalt, such that the modified asphaltwith high rubber content cannot segregate, and the asphalt regenerant can greatly reduce the high-temperature viscosity of the modified asphalt so as to reduce the emulsification difficulty of the modified asphalt with high rubber content; by using the preparation process comprising secondary pH value adjustment, the high solid content emulsified product can be prepared in the case of the low emulsifier adding amount; and by adding the stabilizer to the product of the invention, the occurrence of demulsification can be avoided so as to ensure the storage stability of the product at a later stage.

Description

technical field [0001] The invention relates to the technical field of asphalt processing, in particular to a rubber-modified asphalt waterproof coating, its preparation method and application. Background technique [0002] At present, the main waterproof coatings widely used in my country's building waterproofing projects include: polyurethane waterproof coatings, polymer cement waterproof coatings, acrylic waterproof coatings and water-emulsion asphalt waterproof coatings. These coatings have played a huge role in my country's building waterproofing projects by virtue of their unique material characteristics, such as polyurethane waterproof coatings, which have high strength, high elongation and other characteristics, and can resist stress damage caused by concrete cracking to a certain extent; polymerization Bio-cement waterproof coating, which is both rigid and flexible, and can be applied on a wet base surface. It is widely used in waterproofing of kitchens, bathrooms, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D195/00C09D7/61C09D7/65
CPCB32B5/02B32B5/022B32B5/028B32B5/08B32B5/26B32B13/14B32B33/00B32B2255/02B32B2255/26B32B2255/28B32B2262/0253B32B2262/0261B32B2262/0276B32B2262/0284B32B2262/12B32B2262/14B32B2307/308B32B2307/5825B32B2307/7265B32B2307/734B32B2419/00C09D195/00E02D31/02E04B1/66E04D5/10C08L53/02
Inventor 伍盛江胡豫张奔陆善庆
Owner XI NIU PI WATERPROOFING TECH CO LTD
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