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A kind of epoxy asphalt compatibilizer and its preparation method and use method

A technology of epoxy asphalt and epoxy asphalt material, which is used in the preparation of epoxy asphalt compatibilizer and in the field of cold mix epoxy asphalt material, which can solve the problem of harmful asphalt smoke, physical and environmental impact, transportation difficulty, etc. problems, to achieve the effect of low overall crosslinking density, improved compatibility, and good construction fluidity

Active Publication Date: 2019-05-21
HUBEI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the epoxy asphalt aggregate that has been mixed must be transported from the mixing station to the construction site under the condition of heat preservation. Transportation is difficult. On the other hand, during the heating process of epoxy asphalt, asphalt fumes harmful to human body will be produced, which will have a great impact on the body of the constructor and the environment.

Method used

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  • A kind of epoxy asphalt compatibilizer and its preparation method and use method
  • A kind of epoxy asphalt compatibilizer and its preparation method and use method
  • A kind of epoxy asphalt compatibilizer and its preparation method and use method

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preparation example Construction

[0094] The present invention provides a kind of preparation method of a kind of cold mix epoxy asphalt repair material described in above-mentioned technical scheme, comprises the following steps:

[0095] a) Add asphalt, asphalt thinner, epoxy asphalt compatibilizer, and epoxy resin curing agent together into a common reaction kettle and mix to obtain part A of the epoxy asphalt material;

[0096] b) Add epoxy resin and epoxy diluent together into an ordinary reaction kettle and stir and mix to obtain part B of epoxy asphalt material;

[0097] c) Mix part A of the epoxy asphalt material obtained in step a) with part B of the epoxy asphalt material obtained in step b) to obtain an epoxy asphalt material, the weight ratio of the part A to the part B For (0.5~5):1.

[0098] In the present invention, some steps of mixing other substances recognized by those skilled in the art that are not mentioned in the above steps may be inserted. There are no special restrictions on the typ...

Embodiment 1

[0115] 564g of oleic acid (China Pharmaceutical (Group) Shanghai Chemical Reagent Company, the same below), 62g ethylene glycol (China Pharmaceutical (Group) Shanghai Chemical Reagent Company, the same below) and 5g concentrated H 2 SO 4 (Tianjin Bohai Chemical Group, the same below) placed in a three-necked flask equipped with a stirrer, a thermometer, and a condenser, heated to 170°C, and started to keep warm. After reflux for 6 hours, the reaction was completed. % sodium bicarbonate aqueous solution and saturated brine to neutrality, then dried with anhydrous calcium chloride, filtered to obtain the product ethyl oleate.

[0116] Place 80g of ethyl oleate and 4g of formic acid (China Pharmaceutical (Group) Shanghai Chemical Reagent Company, the same below) in a three-necked flask equipped with a stirrer, a thermometer, and a dropping funnel, and the three-necked flask is placed in an automatic temperature-controlled In the water bath system, stir, and after the temperature...

Embodiment 2

[0118] Mix 846g of oleic acid, 92g of glycerol (China Pharmaceutical (Group) Shanghai Chemical Reagent Company, the same below) and 5g of concentrated H 2 SO 4Place in a three-neck flask equipped with a stirrer, a thermometer, and a condenser, heat to 170°C, start to keep warm, and reflux for 8 hours to complete the reaction. Wash the remaining liquid with saturated saline and 10% aqueous sodium bicarbonate solution until neutral , and then dried with anhydrous calcium chloride, and filtered to obtain the product propyl oleate.

[0119] Put 80g of propyl oleate and 4g of formic acid in a three-necked flask equipped with a stirrer, a thermometer, and a dropping funnel. The three-necked flask is placed in a water bath system with automatic temperature control, and stirred. , 40 g of 50% hydrogen peroxide was added dropwise for 5 minutes, the temperature of the system was raised to 60 °C and kept for 4 hours, and the reaction was completed. Transfer the reaction mixture to a se...

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Abstract

The invention provides an epoxy asphalt compatibilizer preparation method and a usage method. The preparation method comprises the following steps: unsaturated aliphatic carboxylic acid and polyatomic alcohol are subjected to an esterification reaction, and then the product is subjected to hydrogen peroxide epoxidation to obtain the epoxy asphalt compatibilizer. An epoxy asphalt material comprises a part A and a part B, the part A comprises the following components by weight: 100 parts of asphalt, 5-50 parts of asphalt diluents, 10-50 parts of epoxy asphalt compatibilizer and 5-50 parts of epoxy asphalt curing agent; the part B comprises the following components by weight: 40-100 parts of epoxy resin and 5-50 parts of epoxy diluents; wherein the weight ratio of part A to part B is 0.5-5: 1. According to the invention, a nonpolar carbon chain in an epoxy asphalt compatibilizer molecular chain is effectively compatible with asphalt, an epoxide group is effectively compatible with epoxy resin, and is subjected to a crosslinking reaction with an epoxy asphalt curing agent, so that mechanical strength and stability of the epoxy asphalt material can be increased.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing an epoxy asphalt compatibilizer, and a cold-mix epoxy asphalt prepared based on the compatibilizer and capable of mixing and construction at room temperature Material. Background technique [0002] The epoxy asphalt material disclosed in the prior art is a semi-fluid paste at room temperature. When paving and using, it must be heated under strict high temperature control to make its viscosity reach about 200cp, such as the mixing temperature of ChemCo epoxy asphalt in the United States. The mixing temperature of TAF epoxy asphalt in Japan is 121°C, and the mixing temperature is 180°C. Moreover, the epoxy asphalt aggregate that has been mixed must be transported from the mixing station to the construction site under the condition of heat preservation. Transportation is difficult. On the other hand, during the heating process of epoxy asphalt, as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L63/00C08K5/1515C07D301/12C07D303/42C04B26/26
Inventor 周威蒋涛王东怡田科曹志龙敖成鸿
Owner HUBEI UNIV
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