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Water-emulsion modified asphalt with creep properties and preparation method thereof

A technology of creep characteristics and modified asphalt, which is applied to building components, building insulation materials, buildings, etc. It can solve the problems of difficulty in repair work, water channeling, and difficulty in finding the source of leakage, so as to reduce construction resistance and facilitate construction , reduce the effect of cohesion

Active Publication Date: 2015-09-30
浙江鲁班建筑防水有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But another problem has arisen from this, that is, once the waterproof layer produces small holes or cracks in a certain part and leaks water, there will be water channeling under the waterproof layer, resulting in multiple leaks in the room, and it is difficult to find the leak. The source of the leakage brings great difficulty to the repair work
[0004] The problems in these material properties and the lack of technology limit the improvement and improvement of the quality of waterproofing projects. It is urgent to propose a complete solution to solve the above problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The raw material ratio of water-emulsion modified asphalt with creep properties is as follows:

[0028] Styrenic thermoplastic elastomer 5% Bitumen 35%

[0029] Fatty acid ester polypeptide condensate 2% Activated calcium carbonate (stearic acid coating) 1%

[0030] Neoprene latex 17% water 30%

[0031] Terpene resin and rosin resin mixture (1:1) 5% Dioctyl phthalate 5%

[0032] The preparation method of above-mentioned modified asphalt is as follows:

[0033] 1) According to the above ratio, add styrene thermoplastic elastomer to 20% of the total amount of asphalt to swell and soften, then heat to 200°C, stir for 60 minutes, enter the colloid mill for 30 minutes, then add the remaining asphalt , to obtain modified asphalt;

[0034] 2) Mix the fatty acid ester polypeptide condensate and water and heat it to 65°C with the modified asphalt, then put it into the colloid mill for 20 minutes;

[0035]3) Neoprene latex (neoprene latex is first mixed with acrylic emulsion...

Embodiment 2

[0043] The raw material ratio of water-emulsion modified asphalt with creep properties is as follows:

[0044] Styrene Butadiene Rubber Thermoplastic Elastomer 15% Bitumen 15%

[0045] Zwitterionic emulsifier imidazoline type 2.5%

[0046] Butyl Rubber Latex 12% Natural Rubber Latex 8%

[0047] Bentonite 1% Dibutyl Phthalate 6%

[0048] Water 36.5% Petroleum resin 4%

[0049] Its preparation method is the same as that of Example 1, wherein the stirring time of step 1) is 120 minutes; the time of step 2) of colloid grinding is 40 minutes.

[0050] Its physical performance test data are as follows:

[0051] Adhesive performance 100% cohesive failure

[0052] Heat resistance 75℃

[0053] Low temperature flexibility -20℃

[0054] Creep performance under shear state 0.5 N / mm.

Embodiment 3

[0056] The distribution ratio of each component of the modified asphalt raw materials is as follows:

[0057] Thermoplastic Polyurethane 7% Bitumen 25%

[0058] Amine emulsifier 3% Bentonite and talc 2%

[0059] Butyl Rubber Latex 15% Water 36%

[0060] Rosin Resin 5% Dibutyl Phthalate 7%

[0061] The preparation method is as in Example 1, wherein the stirring time of step 1) is 100 minutes; the time of step 2) colloid grinding is 30 minutes.

[0062] Its physical performance test data are as follows:

[0063] Adhesive performance: 100% cohesive failure

[0064] Heat resistance: 75℃

[0065] Low temperature flexibility: -20°C;

[0066] Creep performance under shear state 0.1 N / mm.

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Abstract

Water-emulsion modified asphalt with creep characteristics and a preparation method thereof belong to the technical field of modified asphalt. It includes the following components by weight percentage: thermoplastic elastomer 3%-15%, asphalt 15%-50%, water 30%-50%, emulsifier 1%-5%, rubber latex 5%-20%, thickener Resin 3%-5%, plasticizer 5%-7%, filler 1%-2%. The present invention modifies asphalt with thermoplastic elastomer, emulsifies the modified asphalt with emulsifier, and then further modifies it into a mixture of elastic and plastic materials through rubber latex, tackifying resin and plasticizer, which not only overcomes the temperature sensitivity of asphalt The weakness is too strong and the cohesion is too low; and it can be an elastic body when the force is less than a certain value, and it will change into a plastic body after the force is greater than the force, and the permanent deformation can eliminate or reduce the internal stress and prolong the waterproof. The service life of the layer has good low-temperature performance, and it still has bonding ability at -10°C.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt, and in particular relates to a water-emulsion type modified asphalt with creep characteristics and a preparation method thereof. Background technique [0002] Asphalt is an excellent basic building material, which has a series of advantages such as impervious, non-absorbent, non-conductive, corrosion-resistant, good cohesiveness and impact resistance; Adhesive, waterproof and anti-corrosion functions. As construction materials and raw materials, it is widely used in various industries such as transportation (roads, railways, aviation, etc.), construction, agriculture, water conservancy projects, industry (extraction industry, manufacturing industry), and civil use. Disadvantages of asphalt are temperature sensitivity and climatic instability. After decades of polymer modification, the performance of asphalt has been greatly improved, and the modified asphalt material has become the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L9/06C08L23/00C08L75/04C08L7/02C08L23/22C08L11/02C08L33/00C08L45/00C08L93/04C08L57/02C08K5/12C08K3/26C08K3/34C08J3/03
Inventor 项晓睿江燚
Owner 浙江鲁班建筑防水有限公司