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Preparation method of bio-based solubilizing and toughening agent-modified epoxy asphalt material

A technology of epoxy asphalt material and toughening agent, which is applied in the direction of building insulation materials, building structures, building components, etc., can solve the problems of insufficient material ductility, difficult to balance tensile strength and elongation at break, etc., to achieve Excellent strength and ductility, improved ductility, and reduced consumption

Active Publication Date: 2014-11-05
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the high crosslink density structure in epoxy asphalt will give the cured product higher strength, it will also cause the problem of insufficient ductility of the material at the same time
This makes it difficult for epoxy asphalt materials to balance their tensile strength and elongation at break.

Method used

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  • Preparation method of bio-based solubilizing and toughening agent-modified epoxy asphalt material
  • Preparation method of bio-based solubilizing and toughening agent-modified epoxy asphalt material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In the first step, put 200g of linseed oil, 300g of eucalyptus seed oil and 100g of glacial acetic acid into the reactor, stir and heat to 50°C, then add 300mL of 30%wt hydrogen peroxide solution and 25g of concentrated sulfuric acid (98%wt) dropwise Mixed acid catalyst with phosphoric acid (1:5, v / v), keep warm for 8 hours after the dropwise addition, let stand for a while to separate the water layer, adjust the pH value to neutral, wash with hot water 3 times, and distill under reduced pressure Prepare epoxy fatty acid ester; put 450g of epoxy fatty acid ester and 1000mL petroleum ether (90-120°C) solvent into the reactor, add 1.5g of HBF at 30°C 4 After adding the catalyst, the temperature was raised to 70°C, an inert gas protective gas was introduced into the reactor, the pressure was maintained at 10 bar, the reaction was carried out for 5 hours, and the pressure was reduced to 1 atmospheric pressure. After taking out the reaction liquid, the solvent petroleum ether...

Embodiment 2

[0033] In the first step, 400g of linseed oil, 100g of rubber seed oil and 100g of glacial acetic acid were placed in a reactor, stirred and heated to 50°C, and then 300mL of 30%wt hydrogen peroxide solution, 15g of concentrated sulfuric acid (98%wt) and Phosphoric acid mixed acid catalyst (1:5, v / v), keep warm for 6 hours after the dropwise addition, let it stand for a while to separate the water layer, adjust the pH value to neutral, wash with hot water for 3 times, and distill under reduced pressure to prepare Epoxy fatty acid ester is obtained; 450g of epoxy fatty acid ester and 1000mL benzene solvent are placed in the reactor, and 6g CF is added at 30°C 3 COOH catalyst, after the addition is completed, the temperature is raised to 50 ° C, an inert gas protection gas is introduced into the reactor, the pressure is kept at 5 bar, the reaction is 3 hours, the pressure is reduced to 1 atmosphere, the reaction liquid is taken out, and the benzene solvent is distilled off under ...

Embodiment 3

[0037] In the first step, put 250g of black meal seed oil, 250g of jatropha seed oil and 120g of glacial acetic acid into the reactor, stir and heat to 75°C, then add 400mL of 30%wt hydrogen peroxide solution and 25g of concentrated sulfuric acid (98%wt) dropwise. ) and phosphoric acid mixed acid catalyst (1:5, v / v), keep warm for 8 hours after the dropwise addition, let stand for a while to separate the water layer, adjust the pH value to neutral, wash with hot water 3 times, and distill under reduced pressure Finally, the epoxy fatty acid ester was prepared; the prepared 450g epoxy fatty acid ester and 1000mL carbon tetrachloride solvent were placed in the reactor, and 5gAlCl was added at 30°C 3 Catalyst, be warming up to 70 ℃ after adding, in the reactor, introduce inert gas protective gas, keep pressure 10bar, react 5h, depressurize to 1 atmospheric pressure, remove carbon tetrachloride solvent under reduced pressure again after taking out reaction liquid, preparation poly...

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Abstract

The invention relates to a preparation method of a bio-based solubilizing and toughening agent-modified epoxy asphalt material. The preparation method comprises the steps of: firstly, epoxidizing unsaturated fats to prepare epoxy fatty acid ester; then, carrying out ring-opening polymerization and hydrolysis reactions on the epoxy fatty acid ester under the action of a catalyst to prepare poly-fatty acid; mixing and reacting the prepared poly-fatty acid, rosin amine and aniline to obtain a bio-based solubilizing and toughening agent; then mixing the prepared bio-based solubilizing and toughening agent and epoxy resin, and reacting to obtain pre-solid mixed liquid; then mixing asphalt and an epoxy hardener, and reacting to obtain a hardener of asphalt dispersoid; and finally uniformly mixing the pre-solid mixed liquid and the hardener of asphalt dispersoid to prepare an epoxy asphalt material with high toughness and thermosetting property. As recyclable natural oil and rosin resources are used as main materials, the product has excellent compatibility, the toughness of the epoxy asphalt material can be obviously improved, and meanwhile, the strength and the elongation at break of the epoxy asphalt material are guaranteed.

Description

technical field [0001] The invention belongs to the field of epoxy asphalt materials, in particular to a preparation method of bio-based compatibilization and toughening agent modified epoxy asphalt materials. Background technique [0002] Asphalt has good adhesion, insulation, heat insulation and moisture-proof, waterproof, anti-corrosion and other properties. of building materials. Asphalt is a thermoplastic material with a relatively low price. However, due to the thermoplasticity of asphalt, its performance under high and low temperature conditions is not ideal. Asphalt materials tend to soften and flow at high temperatures, but are brittle and prone to cracks at low temperatures. In order to improve the performance of asphalt materials, people have been devoting themselves to the research and development of modified asphalt for a long time. [0003] Thermosetting epoxy asphalt material is to introduce epoxy resin into the asphalt system, let the asphalt and epoxy res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L63/00C08L93/04C08K5/101
Inventor 夏建陵李守海杨雪娟黄坤李梅杨小华张燕
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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