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Temperature-control released snow-melting agent microcapsule and preparation method thereof

A snow-melting agent and microcapsule technology, which is applied in the field of temperature-controlled release-type snow-melting agent microcapsules and their preparation, can solve the problems of inability to take into account the snow-melting effect and the durability of snow-melting, and the inability to control the release time of snow-melting substances, so as to promote long-term snow-melting. High deicing and snow melting efficiency and accumulation suppression effect

Inactive Publication Date: 2014-06-18
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the problem that the existing ice-melting coating cannot control the release time of snow-melting substances, and cannot take into account the snow-melting effect and the persistence of snow-melting, and provides a method that can prolong the release time of snow-melting substances and improve snow-melting efficiency. Environment-friendly deicing agent microcapsule capable of temperature control, and preparation method of the deicing agent microcapsule

Method used

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  • Temperature-control released snow-melting agent microcapsule and preparation method thereof
  • Temperature-control released snow-melting agent microcapsule and preparation method thereof
  • Temperature-control released snow-melting agent microcapsule and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] 1. Preparation of deicing agent microcapsules

[0029] Dissolve 0.5 g of polystyrene with a number average molecular weight of 40,000 in 30 g of cyclohexane, add 0.9 g of sodium chloride and 0.1 g of polyethylene glycol 4000 that have been ground through a 100 mesh sieve, stir and disperse evenly, and then pour Add 3g Span-80 into 150g methyl silicone oil, stir and fully emulsify to form a stable emulsion, evaporate the cyclohexane in the emulsion under reduced pressure at room temperature, filter with suction, wash with petroleum ether, dry at room temperature to obtain snowmelt agent microcapsules.

[0030] 2. Preparation of temperature-controlled release deicing agent microcapsules

[0031] Dissolve 0.15g of benzophenone and 0.1g of N-methyl-N-sec-butylacrylamide in 5g of absolute ethanol, then add 1g of deicing agent microcapsules, stir and mix evenly, heat at 50°C for 1 hour, and cool to At room temperature, then add 5g of absolute ethanol, irradiate with 500W ul...

Embodiment 2

[0037] 1. Preparation of deicing agent microcapsules

[0038] Completely dissolve 0.1g of polystyrene with a number average molecular weight of 50,000 in 20g of cyclohexane, add 0.9g of magnesium nitrate and 0.1g of sodium gluconate that have been ground and passed through a 150-mesh sieve, stir and disperse evenly, and then pour 100g of formosan Add 2g of Span-80 to base silicone oil, stir and fully emulsify to form a stable emulsion, evaporate the cyclohexane in the emulsion under reduced pressure at room temperature, filter with suction, wash with petroleum ether, and dry at room temperature to obtain deicing agent microcapsules .

[0039] 2. Preparation of temperature-controlled release deicing agent microcapsules

[0040] Dissolve 0.1g of benzophenone and 0.05g of N-methyl-N-sec-butylacrylamide in 3g of absolute ethanol, then add 1g of deicing agent microcapsules, stir and mix evenly, pretreat at 50°C for 0.5 hours, and cool to normal temperature, then add 3g of absolut...

Embodiment 3

[0042] 1. Preparation of deicing agent microcapsules

[0043] Completely dissolve 1g of polystyrene with a number average molecular weight of 40,000 in 40g of cyclohexane, add 0.9g of calcium chloride and 0.1g of acrylamide that have been ground and passed through a 200-mesh sieve, stir and disperse evenly, and then pour 200g of methyl Add 5g of Span-80 to the silicone oil, stir and fully emulsify to form a stable emulsion, evaporate the cyclohexane in the emulsion under reduced pressure at room temperature, filter with suction, wash with petroleum ether, and dry at room temperature to obtain deicing agent microcapsules.

[0044] 2. Preparation of temperature-controlled release deicing agent microcapsules

[0045] Dissolve 0.3g of benzophenone and 0.3g of N-methyl-N-sec-butylacrylamide in 10g of absolute ethanol, then add 1g of deicing agent microcapsules, stir and mix evenly, and pretreat at 50°C for 0.5 hours , cooled to normal temperature, then added 10g of absolute ethano...

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Abstract

The invention discloses a temperature-control released snow-melting agent microcapsule and a preparation method thereof. The preparation method comprises the steps of preparing a microcapsule in which macromolecular polymer coats snow melting substances by adopting an emulsion-solvent evaporation method, then grafting and polymerizing temperature-sensitive molecules to the surfaces and pore passages of the microcapsule by adopting an ultraviolet grafting method, to obtain the temperature-control released snow-melting agent microcapsule. The temperature-sensitive molecules of the temperature-control released snow-melting agent microcapsule can be swelled or shrunk along with the change of external temperature, the snow-melting agent can be slowly released so as to melt icy snow, so that the snow melting agent has intelligentization, the high-molecular polymer on the surface has stronger adsorption capability, and can adsorb a part of released snow melting substances so as to promote the long-lasting snow melting and ice removal, so that the usage amount of the snow-melting agent can be decreased, and the problem that the snow melting substances are easily scoured by rainwater and cannot be released for a long time can be solved. The temperature-control released snow-melting agent microcapsule can be applied in a pavement asphalt mixture, a microsurfacing position, a slurry seal, an ultrathin wearing layer, and forms a temperature-control released intelligent pavement material.

Description

technical field [0001] The invention belongs to the technical field of road materials, and in particular relates to a temperature-controlled release deicing agent microcapsule and a preparation method thereof. Background technique [0002] The snow and ice on the road surface in winter greatly reduces the adhesion coefficient of the road surface, which seriously affects the smooth flow of the road and driving safety. Traditional snow removal methods such as manual, mechanical, and deicing agents cannot maintain road safety anytime, anywhere for a long time. In practical application, snow-melting pavement and snow-melting coating products came into being. Snow-melting pavement or snow-melting coating refers to adding substances with snow-melting function to road materials or coatings, releasing them when rain and snow fall, melting the ice and snow on the road surface, and achieving the guarantee effect on road safety. The Chinese patent with the publication number CN102199...

Claims

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Application Information

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IPC IPC(8): C09K3/18B01J13/14
Inventor 陈亚芍熊涛白云山向豪韩莉君杨杰肖婷
Owner SHAANXI NORMAL UNIV
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