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Environment-friendly road microcapsule, preparation method thereof and application of swill-cooked dirty oil

A microcapsule and environment-friendly technology, applied in the field of environment-friendly road microcapsules and their preparation, can solve the problems of low coating rate, great influence on the performance of asphalt pavement, thickness of the capsule wall, etc. Core coverage and particle size reduction effect

Active Publication Date: 2021-01-22
CHANGAN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the microcapsules for road use have large particle size and thick capsule wall, so that they have a great influence on the performance of asphalt pavement, and the coating rate is low.
At present, the preparation methods of road microcapsules are mainly divided into physical adsorption method and in-situ polymerization method. Among them, the particle size of microcapsules prepared by physical adsorption method is mostly 1-2 mm, and the thickness of the capsule wall depends on the external adsorption rock. The rate is determined by the porosity of the outer capsule wall and cannot be stabilized

Method used

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  • Environment-friendly road microcapsule, preparation method thereof and application of swill-cooked dirty oil
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  • Environment-friendly road microcapsule, preparation method thereof and application of swill-cooked dirty oil

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preparation example Construction

[0033] Such as figure 1 As shown, the present invention prepares the preparation method of above-mentioned a kind of environment-friendly road microcapsules, comprises the following steps:

[0034] Step 1, preparing an emulsifier solution; mixing waste oil and isophorone diisocyanate to obtain an activated capsule core solution;

[0035] Step 2, shearing and mixing the emulsifier solution and the activated capsule core solution to obtain an oil-in-water emulsion;

[0036] Step 3, adding dibutyltin dilaurate dropwise to the oil-in-water emulsion to carry out catalytic emulsification reaction to obtain the cloudy liquid of environment-friendly road microcapsules; centrifuging and drying the cloudy liquid of environment-friendly road microcapsules , to obtain environment-friendly road microcapsules.

Embodiment 1

[0038] An environment-friendly road microcapsule, the proportions of various substances are as follows, PVA: waste oil: IPDI: deionized water = 300: 175: 75: 450, and the amount of DBTDL added is 10% of the mass of IPDI. refer to figure 1 , its preparation method comprises the following steps:

[0039] Get 33.3g of 1788 type liquid PVA, drop it into 50g of deionized water, prepare emulsifier solution; mix 19.4g waste oil with 8.3g isophorone diisocyanate, prepare activated capsule core solution; mix emulsifier solution with The activated capsule core solution was mixed, and high-speed shearing was carried out at a shear rate of 5000r / min, and the shearing time was 5min to obtain an oil-in-water emulsion; 0.83g of dibutyltin dilaurate was added dropwise to the oil-in-water emulsion solution, and reacted at 80°C for 4 hours to obtain the environment-friendly road microcapsule turbid solution; centrifuge the microcapsule turbid solution at 10,000r / min for 3min, take the upper fl...

Embodiment 2

[0041] An environment-friendly microcapsule for road use, the proportions of various substances are as follows, PVA: waste oil: IPDI: deionized water = 300: 150: 75: 450, and the amount of DBTDL added is 10% of the mass of IPDI. refer to figure 1 , its preparation method comprises the following steps:

[0042] Get 33.3g of 1788 type liquid PVA, drop it into 50g of deionized water, prepare emulsifier solution; mix 16.7g waste oil with 8.3g isophorone diisocyanate, prepare activated capsule core solution; mix emulsifier solution with The activated capsule core solution was mixed, and high-speed shearing was carried out at a shear rate of 4000r / min, and the shearing time was 8min to obtain an oil-in-water emulsion; 0.83g of dibutyltin dilaurate was added dropwise to the oil-in-water emulsion solution, and reacted at 80°C for 4 hours to obtain the environment-friendly road microcapsule turbid solution; centrifuge the microcapsule turbid solution at 10,000r / min for 3min, take the ...

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Abstract

The invention belongs to the technical field of asphalt pavements, and discloses an environment-friendly road microcapsule, a preparation method thereof and application of swill-cooked dirty oil. Theenvironment-friendly road microcapsule comprises the following raw materials: polyvinyl alcohol, swill-cooked dirty oil, isophorone diisocyanate, dibutyltin dilaurate and deionized water. The preparation method comprises the following steps of: preparing an emulsifier solution; mixing the swill-cooked dirty oil with the isophorone diisocyanate to obtain an activated capsule core solution; shearingand mixing the emulsifier solution and the activated capsule core solution, and dropwise adding the dibutyltin dilaurate for catalytic emulsification reaction to obtain a permeable microcapsule turbid solution; and carrying out centrifugation and drying so as to obtain the microcapsule. The environment-friendly road self-healing microcapsule is prepared from the swill-cooked dirty oil; the particle size of the microcapsule ranges from 15 to 30 microns; the capsule core coating rate is 75%; and self-repairing of cracks is achieved when cracks appear.

Description

technical field [0001] The invention relates to the technical field of asphalt pavement, in particular to an environment-friendly road microcapsule, a preparation method thereof and the application of waste oil. Background technique [0002] Waste oil generally refers to all kinds of low-quality oils that exist in daily life, such as recycled cooking oil, repeatedly used frying oil, etc. The biggest source of gutter oil is the grease trap in the sewer of large urban hotels, that is, the greasy floating matter in the sewer or the oil that is simply processed and extracted from leftovers and leftovers (commonly known as swill) in hotels and restaurants. Poor and extremely unhygienic non-edible oil belongs to household garbage, and if it flows into the dining table, it is very harmful to people's health. How to effectively use this household garbage is of great significance to human health and green life. [0003] Cracks are one of the most common diseases of asphalt pavement,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/65C08G18/62C08G18/36C08G18/24E01C7/00C11B15/00B01J13/06
CPCC08G18/755C08G18/6547C08G18/6212C08G18/36C08G18/246C11B15/00B01J13/06E01C7/00
Inventor 纪小平陈云华文龙司柏通张阳姚秉辰胡永林李加汤振农曹正道
Owner CHANGAN UNIV
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