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Waterborne epoxy resin modified emulsified asphalt and preparation and application thereof

A technology of water-based epoxy resin and emulsified asphalt, which is applied in asphalt coatings, building components, coatings, etc., can solve the problems affecting the performance and properties of emulsified asphalt, low softening point, short service time, etc., and achieve excellent emulsification effect

Inactive Publication Date: 2012-08-01
重庆融极环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, the curing agent of the water-based epoxy resin used is an ionic curing agent, and the prepared water-based epoxy resin also contains ions, which will affect the performance and properties of the emulsified asphalt
Therefore, the performance of the emulsified asphalt prepared by it also has certain defects: such as low softening point, small extension length, large penetration, short service time, etc.

Method used

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  • Waterborne epoxy resin modified emulsified asphalt and preparation and application thereof
  • Waterborne epoxy resin modified emulsified asphalt and preparation and application thereof
  • Waterborne epoxy resin modified emulsified asphalt and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] 1. Synthesis of water-based epoxy resin curing agent

[0065] (1) Preparation of diepoxy compounds:

[0066] In a four-necked flask filled with nitrogen, equipped with a stirrer, a thermometer, a reflux condenser, and a constant pressure funnel, add 0.24 moles of SY-669 (ethylene glycol bisglycidyl ether), raise the temperature to 65 ° C, and dissolve 0.1 moles of SY-669 Octadecylamine was dissolved in 40g of propylene glycol methyl ether, placed in a constant pressure funnel, and then slowly dropped into the flask. Control the dropwise addition within 1 to 1.5 hours, then raise the temperature to 70° C., react for about 3 to 4 hours, and measure the reaction end point by hydrochloric acid acetone method. The product is taken out, and the product is cooled, and its structure is as follows:

[0067]

[0068] (2) Hydrolysis of epoxy group: add dilute hydrochloric acid solution in the diepoxy group compound that makes in the step (1), wherein the mass percentage conce...

Embodiment 2

[0082] 1. Synthesis of water-based epoxy resin curing agent

[0083] (1) Preparation of Diepoxides:

[0084] In a four-neck flask equipped with a stirrer, a thermometer, a reflux condenser, and a constant pressure funnel, add 0.24 moles of SY-669 (ethylene glycol bisglycidyl ether), raise the temperature to 65 ° C, and add 0.1 moles of hexadecylamine Dissolve in 40g of propylene glycol methyl ether, place in a constant pressure funnel and slowly drop into the flask. Control the dropwise addition within 1 hour, then raise the temperature to 70°C, react for about 4 hours, and measure the reaction end point by the hydrochloric acid acetone method. The product was removed and cooled. Its structural formula is:

[0085]

[0086] (2) Hydrolysis of epoxy group: add dilute hydrochloric acid solution in the diepoxy group compound that makes in the step (1), wherein wherein the mass percent concentration of hydrochloric acid is 5%, between dilute hydrochloric acid and diepoxy grou...

Embodiment 3

[0100] 1. Synthesis of water-based epoxy resin curing agent

[0101] (1) Preparation of Diepoxides:

[0102] In a four-neck flask filled with nitrogen, equipped with a stirrer, a thermometer, a reflux condenser, and a constant pressure funnel, add 0.24 moles of polyethylene glycol bisglycidyl ether (m=1), raise the temperature to 65 ° C, and 0.1 One mole of tetradecylamine was dissolved in 40g of propylene glycol methyl ether, placed in a constant pressure funnel, and then slowly dropped into the flask. Control the dropwise addition within 1.5 hours, then raise the temperature to 70°C, react for about 4 hours, and measure the reaction end point by hydrochloric acid acetone method. The product was taken out, and the product was cooled. Its structure is as follows:

[0103]

[0104] in:

[0105] n is an integer of 12;

[0106] R stands for -O-A-O-,

[0107] A is: m=1

[0108] (2) Hydrolysis of epoxy group: add dilute hydrochloric acid solution in the diepoxy group co...

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PUM

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Abstract

The invention discloses waterborne epoxy resin modified emulsified asphalt, which contains emulsified asphalt and self-emulsifying waterborne epoxy resin, wherein the volume ratio of the emulsified asphalt to the self-emulsifying waterborne epoxy resin is 1: (0.2-0.8); the emulsified asphalt is nonionic emulsified asphalt, anionic emulsified asphalt or cationic emulsified asphalt, and the solid content of the emulsified asphalt is 20 to 60 percent; and the self-emulsifying waterborne epoxy resin contains waterborne epoxy resin curing agent, water and liquid epoxy resin in a mass ratio of 1: (0.8-2): (2-5). The invention also discloses a preparation method for the waterborne epoxy resin modified emulsified asphalt and application in preparation of an asphalt type waterproof coating. After the common commercial emulsified asphalt is modified by the waterborne epoxy resin, the break elongation of the emulsified asphalt can be improved, and the modified emulsified asphalt has high adhesive strength with a base plane, certain strength and high waterproof property and ageing resistance; and the modified emulsified asphalt can be used for making the asphalt type waterproof coating, and can also be used for repairing road pavements.

Description

technical field [0001] The invention relates to building materials, in particular to a water-based epoxy resin-modified emulsified asphalt and its preparation and application, especially the application in the preparation of waterproof coatings and road repair materials. Background technique [0002] Emulsified asphalt is to melt the asphalt, and through mechanical action, the asphalt is dispersed in the aqueous solution containing emulsifier in the state of fine droplets to form an oil-in-water asphalt emulsion. According to the size of asphalt particles in asphalt emulsion, it can be divided into ordinary emulsion and fine emulsion. The particles of ordinary emulsion are generally 1-20 μm, and the particles of fine emulsion are generally 0.01-0.05 μm. Emulsified asphalt is an ordinary emulsion, which is in a fluid state at room temperature, and can be used for road maintenance with wet mineral materials at room temperature. Building roads with emulsified asphalt and usin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L63/00C08G59/50C09D195/00E01C11/10
Inventor 肖定书陈刚才邹海良李大荣
Owner 重庆融极环保工程有限公司
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