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A kind of polymer-based asphalt anti-stripping agent and its preparation method and application

An anti-stripping agent and polymer technology, applied in the field of new materials, can solve the problems of complex asphalt concrete construction process, prolonged mixing time, and increased construction difficulty, so as to increase construction difficulty, reduce separation links, and reduce preparation costs Effect

Active Publication Date: 2019-05-17
沐联环境科技(重庆)股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] To sum up, the problems existing in the prior art are: the current method of increasing the force between asphalt and mineral aggregates has high cost and poor practicability; the increase of asphalt mixing temperature and construction temperature and the prolongation of mixing time make the The construction technology of asphalt concrete is complicated and the construction difficulty is increased

Method used

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  • A kind of polymer-based asphalt anti-stripping agent and its preparation method and application
  • A kind of polymer-based asphalt anti-stripping agent and its preparation method and application
  • A kind of polymer-based asphalt anti-stripping agent and its preparation method and application

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preparation example Construction

[0026] Such as figure 1 As shown, the preparation method of the polymer-based asphalt anti-stripping agent provided by the embodiments of the present invention comprises the following steps:

[0027] S101: Polyglycidyl methacrylate macromolecule microspheres are prepared by radical emulsion polymerization of glycidyl methacrylate;

[0028] S102: Through the ring-opening reaction between the long-chain alkyl derivatives and the polyamine structure compound and the epoxy ring of the prepared polyglycidyl methacrylate polymer microspheres, the long-chain alkyl R f and the polyamine structure R m introduced into the surface of the prepared polyglycidyl methacrylate macromolecular microspheres to obtain the polymer-based asphalt anti-stripping agent macromolecular microspheres.

[0029] Embodiments of the present invention also provide an application of the polymer-based asphalt anti-stripping agent as described above, comprising the following steps:

[0030] The above-mentioned...

Embodiment 1

[0033] The polymer-based asphalt anti-stripping agent of the embodiment of the present invention has the following general formula:

[0034]

[0035] Wherein, x is an integer of 10-500, y is an integer of 10-500, and z is an integer of 10-500;

[0036] R f Dodecyl mercaptan above C6, R m The polyamine chain is triethylenetetramine.

[0037] The preparation method of the polymer-based asphalt anti-stripping agent of the embodiment of the present invention comprises the following steps:

[0038] 1) Add 100ml aqueous solution containing 5% (wt %) span-80 emulsifier in the four-necked flask that condensing tube, nitrogen inlet and outlet, mechanical stirring device are housed, stabilizer PVP-k30 (povidone) 3g, after dissolving Add monomers (GMA (glycidyl methacrylate) 30g, BA (butyl acetate) 3g, divinylbenzene 2g and initiator AIBN (azobisisobutyronitrile) 0.6g, stir with nitrogen for 30min, 70°C Constant temperature, 120r / min stirring 24h, after cooling, make PGMA (polygly...

Embodiment 2

[0042] The polymer-based asphalt anti-stripping agent of the embodiment of the present invention has the following general formula:

[0043]

[0044] Wherein, x is an integer of 10-500, y is an integer of 10-500, and z is an integer of 10-500;

[0045] R f is octadecanoic acid, R m The polyamine chain is hexamethylenediamine.

[0046]1) add the 100ml aqueous solution that contains 5% (wt%) tween-60 emulsifier in the four-neck flask that condenser pipe, nitrogen inlet and outlet, mechanical stirring device are housed, stabilizing agent PVA (Povidone) 3g, after dissolving, add single Body (GMA (glycidyl methacrylate) 30g, HPMAS (sodium methacrylate hydroxypropyl sulfonate) 5g, pentaerythritol tripropylene 1g and initiator AIBN (azobisisobutyronitrile) 0.3g, nitrogen gas was stirred for 30min , constant temperature at 70°C, stirring at 120r / min for 24h, after cooling, a PGMA (polyglycidyl methacrylate) polymer microsphere emulsion was prepared;

[0047] 2) Add 8.0 g of oct...

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Abstract

The invention belongs to the technical field of new materials, and discloses a polymer-based asphalt anti stripping agent and a preparation method and application thereof; by winding of long chain alkyl groups and asphalt molecular chains, compatibility between asphalt and coarse and fine aggregates can be increased, polyamine structures and epoxy rings in the asphalt anti stripping agent can be firmly attached on the surface of the coarse and fine aggregates so as to bridge the asphalt and aggregate components with high polarity and weak acidity to increase the strong interaction between the asphalt and aggregates, the dosage of the polymer-based asphalt anti stripping agent is less (0.3-5wt.%), a construction process is not changed, difficulty in construction is not increased; the polymer-based asphalt anti stripping agent is in an emulsion form, a separation link in the preparation process is reduced, preparation cost is greatly reduced, and the polymer-based asphalt anti stripping agent is practical and efficient.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a polymer-based asphalt anti-stripping agent and its preparation method and application. Background technique [0002] Asphalt is widely used in roads, bridges, waterproof sealing and other fields. Usually, asphalt is used together with fine aggregate mineral powder. The mineral powder is divided into two types: acid mineral powder and alkaline mineral powder. The acid mineral powder is usually quartzite and granite. Such as powder, dense texture, smooth, high strength. Alkaline mineral powder is usually limestone, marble and other powders. The performance of asphalt concrete is not only limited by the performance of the composition, but also related to the interaction between the asphalt and the composition, especially the mineral powder. Asphalt itself shows weak acidity, so the binding force between asphalt and alkaline mineral powder is strong, and the ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/32C08F212/36C08F8/32C04B24/16C04B24/26
CPCC04B24/163C04B24/2641C08F8/32C08F220/32C08F220/325C08F2800/20C08F212/36
Inventor 袁浩窦建军陈刚才肖定书叶姜瑜
Owner 沐联环境科技(重庆)股份有限公司
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