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Preparation method for high-temperature-resistant anti-track additive

An anti-rutting additive and high-temperature-resistant technology, which is applied to building insulation materials, building components, buildings, etc., can solve the problems of decreased anti-rutting performance and poor high-temperature resistance, and achieve the effect of improving anti-rutting performance

Active Publication Date: 2015-07-29
广东道衡建设工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: after the conventional anti-rutting additives are applied to the asphalt pavement, their high-temperature resistance is not good, and after being used at high temperatures, the anti-rutting performance will decline; modified to obtain

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1, preparation of modified epoxy resin: 3-methylcatechol 10Kg, hydroxymalonic acid 4Kg, m-trifluoromethylphenol 12Kg and 4,4'-dihydroxybiphenyl 15Kg with epichlorine Alcohol 90Kg, the aqueous solution of alkali metal hydroxide (sodium hydroxide) is mixed uniformly, and the usage amount of alkali metal hydroxide is 0.8 mole with respect to total hydroxyl amount 1 mole in all monomers, and alkali metal hydroxide The mass concentration of the aqueous solution of the substance is 15wt%, heating reaction, reaction time 1 hour, reaction temperature 50 ℃, after the reaction finishes, evaporate and remove solvent, add benzene or ketone solvent, add water after washing, remove water phase, and organic The phase is evaporated to dryness;

[0020] Step 2, the modified epoxy resin, polyethylene 20Kg, polypropylene 20Kg, crystalline polyester resin 6Kg, styrene-butadiene rubber 9Kg, stearic acid 5Kg, carbon fiber 6Kg, ethyl acetoacetate 10Kg, polyimide fiber 5Kg and 6Kg of eth...

Embodiment 2

[0022] Step 1, preparation of modified epoxy resin: mix 20Kg of 3-methylcatechol, 6Kg of hydroxymalonic acid, 16Kg of m-trifluoromethylphenol and 30Kg of 4,4'-dihydroxybiphenyl with epichlorine Alcohol 140Kg, the aqueous solution of alkali metal hydroxide (sodium hydroxide) is mixed uniformly, and the usage amount of alkali metal hydroxide is 1.2 moles relative to the total hydroxyl amount in all monomers, and alkali metal hydroxide The mass concentration of the aqueous solution of the compound is 20wt%, heating reaction, reaction time 10 hours, reaction temperature 90 ℃, after reaction finishes, evaporate and remove solvent, add benzene or ketone solvent, add water after washing again, remove water phase, organic The phase is evaporated to dryness;

[0023] Step 2, the modified epoxy resin, polyethylene 30Kg, polypropylene 30Kg, crystalline polyester resin 12Kg, styrene-butadiene rubber 15Kg, stearic acid 10Kg, carbon fiber 12Kg, ethyl acetoacetate 15Kg, polyimide fiber 10Kg...

Embodiment 3

[0025] Step 1, preparation of modified epoxy resin: mix 3-methylcatechol 15Kg, hydroxymalonic acid 5Kg, m-trifluoromethylphenol 15Kg and 4,4'-dihydroxybiphenyl 20Kg with epichlorine 130Kg of alcohol and an aqueous solution of alkali metal hydroxide (sodium hydroxide) are mixed evenly. The amount of alkali metal hydroxide used is 1.1 moles relative to the total hydroxyl group in all monomers. The amount of alkali metal hydroxide The mass concentration of the aqueous solution is 17wt%. Heating the reaction, the reaction time is 5 hours, and the reaction temperature is 70°C. After the reaction, evaporate the solvent, add benzene or ketone solvent, add water to wash, remove the water phase, and evaporate the organic phase. get it dry;

[0026] Step 2, the modified epoxy resin, polyethylene 25Kg, polypropylene 25Kg, crystalline polyester resin 10Kg, styrene-butadiene rubber 12Kg, stearic acid 8Kg, carbon fiber 11Kg, ethyl acetoacetate 12Kg, polyimide fiber 7Kg and 8Kg of ethylene-...

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PUM

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Abstract

The invention discloses a preparation method for a high-temperature-resistant anti-track additive, and belongs to the technical field of pavement materials. The preparation method comprises the following steps: uniformly mixing 3-methylpyrocatechol, tartronic acid, m-trifluoromethylphenol and 4,4-dihydroxybiphenyl with an aqueous solution of epichlorohydrin and alkaline metal hydroxide, performing heating reaction, evaporating to remove a solvent after the reaction, adding a benzene or ketone solvent, adding water for washing, removing a water phase, and evaporating an organic phase until the water is empty; uniformly mixing modified epoxy resin, polyethylene, polypropylene, crystallized polyester resin, butadiene styrene rubber, stearic acid, carbon fibers, chloracetyl acetylacetic ether, polyimide fibers and ethylene-vinyl acetate polymer, feeding into a single-screw extruder for extrusion and granulation to obtain the high-temperature-resistant anti-track additive. According to the preparation method for the high-temperature-resistant anti-track additive, the epoxy resin used in the anti-track additive is modified, so that the additive can be better applied to the anti-track performance under the high-temperature action of a bituminous pavement.

Description

technical field [0001] The invention discloses a preparation method of a high-temperature-resistant anti-rutting additive, which belongs to the technical field of pavement materials. Background technique [0002] Among the main diseases of asphalt pavement, rutting phenomenon is especially common, and the damage to the pavement is also the most serious, which greatly increases the repair cost of the pavement. The rutting problem usually occurs in the high temperature period of the first summer. Some road ruts have a depth of 10-50mm, and some even reach more than 100mm, which makes the road surface evenness worse, and network cracks, potholes, and pits will soon appear. Groove and other diseases. [0003] The anti-rutting additive improves the anti-rutting ability, which is mainly formed by the interaction between the anti-rutting agent and asphalt after melting at high temperature: ①Consolidation: the additive is put into the mixing pot of the asphalt mixture, and at a ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L23/12C08L63/00C08L23/06C08L67/00C08L9/06C08L79/08C08L23/08C08K7/06C08K5/09C08G59/12
Inventor 李孟平
Owner 广东道衡建设工程有限公司
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