A kind of rubber powder modified asphalt linking agent and preparation method thereof

A technology of modified asphalt and connecting agent, used in building components, building insulation materials, construction and other directions, can solve the problems of not fully exerting the performance advantages of rubber powder modified asphalt mixture, and achieve the promotion of large-scale popularization and application. Economic prospects, the effect of improving road performance

Active Publication Date: 2016-06-01
山西省交通新技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even the road sections where rubber powder modified asphalt mixture has been applied have not fully utilized the performance advantages of rubber powder modified asphalt mixture

Method used

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  • A kind of rubber powder modified asphalt linking agent and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The linking agent is proportioned in parts by mass: 80 parts of deionized water, 14.8 parts of styrene, 3.7 parts of acrylamide monomer, 0.75 parts of potassium persulfate, and 0.75 parts of AEC10Na.

[0016] Preparation method: Take deionized water, AEC10Na, acrylamide monomer, styrene and potassium persulfate in order and put them into the reaction kettle in sequence; stir evenly, electric stirring speed is 120r / min, heat in a water bath at 70°C, and react continuously for 7h to obtain Uniform polymer emulsion; remove moisture and unreacted monomers in the copolymer emulsion, and dry to constant weight to obtain rubber powder modified asphalt binder.

Embodiment 2

[0018] The linking agent is proportioned in parts by mass: 80 parts of deionized water, 14.5 parts of styrene, 4.0 parts of N-methylolacrylamide monomer, 0.75 parts of sodium persulfate, and 0.75 parts of AEC10Na.

[0019] Preparation method: Take deionized water, AEC10Na, N-methylolacrylamide monomer, styrene and sodium persulfate in order and put them into the reaction kettle in sequence; stir evenly, electric stirring speed 80r / min, heat in a water bath at 65°C, Continue the reaction for 5 hours to obtain a uniform polymer emulsion; remove the moisture and unreacted monomers in the copolymer emulsion, and dry to constant weight to obtain the rubber powder modified asphalt binder.

Embodiment 3

[0021] The linking agent is proportioned in parts by mass: 78 parts of deionized water, 13 parts of styrene, 7 parts of N-methylolacrylamide monomer, and 1 part of sodium persulfate.

[0022] Preparation method: Take deionized water, N-methylolacrylamide monomer, styrene and sodium persulfate in order and put them into the reaction kettle in sequence; stir evenly, the electric stirring speed is 180r / min, heat in a water bath at 70°C, and continue the reaction After 7 hours, a uniform polymer emulsion was obtained; water and unreacted monomers in the copolymer emulsion were removed, and dried to a constant weight to obtain a rubber powder modified asphalt binder.

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Abstract

The invention belongs to the technical field of modified bitumen auxiliaries, and in particular relates to a rubber powder modified bitumen bridging agent and a preparation method thereof. The bridging agent is prepared form the following raw materials in parts by mass: 70-90 parts of deionized water, 10-30 parts of styrene, 2-30 parts of amide functional monomers, 0.75-2 parts of an initiator and 0-2 parts of an emulsifier through the emulsion polymerization. The method specifically comprises steps of: sequentially taking and putting the deionized water, the emulsifier, the amide functional monomers, the styrene and the initiator into a reactor; uniformly stirring, heating to react for 5-7 hours through a water bath, and thus obtaining the uniform polymer emulsion; and removing water and unreacted monomers in the polymer emulsion, and drying to obtain the rubber powder modified bitumen bridging agent. Compared with the prior art, the bridging agent prepared by the method can be used for lowering the high-temperature requirements of a rubber powder modified bituminous mixture in producing, laying and grinding processes, so that pollution is reduced, the performances such as high-temperature track resistance, low-temperature crack resistance, durability and aging resistance of the rubber powder modified bitumen can be obviously improved.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt additives, and specifically relates to a polymer copolymer rubber powder modified asphalt linking agent and a preparation method thereof. Background technique [0002] Waste tires are called "black pollution", and its recycling and processing technology is a worldwide problem. How to dispose of waste tires has long been a difficult problem in environmental protection. With the development of the automobile industry, more and more "black pollution" formed by waste tires is threatening the living environment of all human beings. The production of waste tires into rubber powder and mixing with petroleum asphalt in a certain proportion to prepare rubber powder modified asphalt is a feasible waste tire treatment method that is encouraged by national policies and has important social value. Economic value and strategic significance. [0003] Compared with ordinary asphalt mixture, rubber pow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L21/00C08L25/08C08F212/08C08F220/56C08F220/58C08F220/54C08F2/28C08F2/30
Inventor 赵队家周亚军刘清波杨喜英赵达峰邓锐韩大千刘俊华郭瑞军
Owner 山西省交通新技术发展有限公司
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