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High-stability microcapsule used for asphalt self-repair

A high-stability, microcapsule technology, applied in building components, building insulation materials, buildings, etc., can solve problems such as increasing social transportation costs, prone to dangerous vehicles, and reducing friction on asphalt road surfaces

Inactive Publication Date: 2014-08-06
苏峻峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the rejuvenator is used on the surface of the aged asphalt road, there are still great limitations: the liquid rejuvenator cannot diffuse well from the surface of the aged asphalt to its interior; when the rejuvenator is used on the surface of the aged asphalt road, the friction The force will be reduced, and the vehicle is prone to danger; at the same time, due to the closure of the road, it will also increase the social traffic cost, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0005] 50 grams of asphalt rejuvenator, 5 grams of styrene maleic anhydride, high-speed dispersion at 70°C, so that the particle size of the asphalt rejuvenator reaches 5 microns; add 150 grams of melamine resin prepolymer, polymerize at 80°C for 2 Hour. The obtained microcapsules were cleaned and filtered with distilled water and then dried.

Embodiment 2

[0007] 50 grams of asphalt rejuvenator, 5 grams of styrene maleic anhydride, high-speed dispersion at 70°C, so that the particle size of the asphalt rejuvenator reaches 50 microns; add 150 grams of melamine resin prepolymer, polymerize at 80°C for 2 Hour. The obtained microcapsules were cleaned and filtered with distilled water and then dried.

Embodiment 3

[0009] 150 grams of asphalt rejuvenator, 15 grams of styrene maleic anhydride, high-speed dispersion at 70°C, so that the particle size of the asphalt rejuvenator reaches 10 microns; add 50 grams of melamine resin prepolymer, polymerize at 80°C for 2 Hour. The obtained microcapsules were cleaned and filtered with distilled water and then dried.

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PUM

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Abstract

The invention provides a high-stability microcapsule used for asphalt self-repair. The microcapsule is characterized in that the microcapsule adopts polymers as wall materials and commercially available asphalt regenerant liquid as a core material; the mass ratio of the wall materials to the core material is (3:1)-(1:3); the polymers used as wall materials are melamine resin, methyl modified melamine resin, phenolic resin, epoxy resin, unsaturated polyester resin and polymethyl methacrylate resin; the core material is an asphalt regenerant, is oily liquid capable of dissolving aged asphalt and has the function of regenerating aged asphalt; after the microcapsule is mixed with molten asphalt at 200 DEG C for one hour, 95% of microcapsule is in a complete state and does not crack; the microcapsule is mixed with asphalt to generate microcracks in the asphalt aging process to crack the microcapsule and the asphalt regenerant is released to self-repair aged asphalt, thus greatly prolonging the service life of asphalt.

Description

technical field [0001] The invention relates to the technical field of environmentally friendly new materials. Background technique [0002] Asphalt is a complex mixture of hydrocarbons with different molecular weights and their non-metallic derivatives. As a very important class of polymer engineering materials and functional materials, it is widely used in many fields. Asphalt itself is a self-repairing material, which can repair the damage of its own structure to a certain extent, but the self-repairing ability of aged asphalt will be greatly weakened. Under the action of environmental factors and repeated loads, microcracks will appear inside the aging asphalt. If these microcracks or damages cannot be repaired in time and effectively, they will cause macroscopic cracks in asphalt materials and lead to structural brittle fractures. It is precisely because of the aging characteristics of asphalt that tens of thousands of tons of "waste road asphalt" are produced in my co...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L51/08C08L51/00C08F283/00C08F283/01C08F212/08C08F222/06C08F265/04
Inventor 苏峻峰
Owner 苏峻峰
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