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Preparation method of single-component waterborne epoxy SBS composite modified emulsified asphalt

A composite modification, water-based epoxy technology, applied in building components, building insulation materials, construction, etc., can solve the problems of low temperature stability, low tensile strength and elongation at break, polluted water quality, etc., to improve durability Low temperature performance, improvement of tensile strength and elongation at break, and improvement of low temperature resistance

Active Publication Date: 2021-02-26
襄城县华诚纸箱包装有限公司
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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: the tensile strength and elongation at break of existing emulsified asphalt are generally low, and counterions such as sodium ions, ammonium ions, chloride ions, sulfate and sulfite ions are solved The problem of polluted water quality, and the problem of frequent low temperature stability decline

Method used

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  • Preparation method of single-component waterborne epoxy SBS composite modified emulsified asphalt
  • Preparation method of single-component waterborne epoxy SBS composite modified emulsified asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Soap preparation:

[0046] Heat 250 grams of water to 60°C, add 27.5 grams of polyethylene glycol (supplier, Shanghai Titan Technology, model 01050891), stir and dissolve, then add 7.5 grams of IPDI (supplier, Shanghai Titan Technology, model 01072400) , 5.3g of 2,2-dimethylolpropionic acid (supplier, Shanghai Mokai Biotechnology Co., Ltd., SY004305) and 0.1 gram of di(dodecylsulfide) diisooctyltin, stirred at a speed of 300r / min Mix for 10 minutes and react at 60-80°C for 4 hours to obtain a water-based polyurethane solution with a viscosity of 3200mPa.s, namely soap.

Embodiment 2

[0048] Preparation of maleic anhydride / SBS modified asphalt:

[0049] 250 grams of 70# base asphalt is heated to 150 ° C, according to the formula in Table 1, first mix maleic anhydride and 1% crosslinking agent dibenzoyl peroxide (BPO) based on the weight of maleic anhydride, and then add Add it to the base asphalt, stir and mix, and react at 150°C for 5 hours to obtain a cross-linked maleic anhydride modified asphalt. Add SBS (Baling Petrochemical Company, model 791h) and 1% compatibilizer by weight of SBS (Dayue Plastic Technology Co., Ltd., model DY-307) into the maleic anhydride modified asphalt, and stir at 150°C Mix for 5 hours to obtain maleic anhydride / SBS modified asphalt.

[0050] Table 1 Various maleic anhydride / SBS modified asphalt

[0051]

Embodiment 3

[0053] Preparation of one-component waterborne epoxy / SBS composite modified emulsified asphalt:

[0054] The maleic anhydride / SBS modified bitumen 100g that experiment number 5 in the embodiment 2 obtains is added in the soap liquid that obtains in the 100g embodiment 1, carries out shearing 15min with rotating speed 8500r / min, obtains the maleic anhydride / SBS modified asphalt. Emulsion of emulsified asphalt (referred to as emulsified asphalt).

[0055] Take by weighing E-618 epoxy resin (Shanghai Resin Factory Co., Ltd.), zinc hexacyanocobaltate and maleic anhydride / SBS modified emulsified pitch based on epoxy resin weight 0.3wt% by the formula weight of Table 2 with rotating speed 1500r / min to shear for 15 minutes and mix evenly to obtain a one-component water-based epoxy / SBS composite modified emulsified asphalt.

[0056] Table 2 Performance comparison of various single-component waterborne epoxy / SBS composite modified emulsified asphalt products

[0057]

[0058] Not...

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Abstract

The invention discloses a preparation method of single-component waterborne epoxy / SBS composite modified emulsified asphalt, which is characterized by comprising the following steps: adding maleic anhydride into matrix asphalt, and adding an initiator to obtain maleic anhydride modified asphalt; heating the maleic anhydride modified asphalt, and adding SBS to obtain maleic anhydride / SBS modified asphalt; using polyethylene glycol, a diisocyanate and 2,2-dimethylolpropionic acid to prepare a waterborne polyurethane solution; adding the maleic anhydride / SBS modified asphalt into the waterborne polyurethane solution to obtain a maleic anhydride / SBS modified asphalt emulsion; and mixing epoxy resin and a drier with the maleic anhydride / SBS modified asphalt emulsion to obtain the single-component waterborne epoxy resin / SBS composite modified emulsified asphalt. The preparation process is simple and rapid, and the obtained product has high tensile strength and elongation at break and also has good low-temperature resistance.

Description

technical field [0001] The invention relates to a method for preparing a novel asphalt material, in particular to a method for preparing a single-component waterborne epoxy / SBS composite modified emulsified asphalt, which belongs to the field of road construction. Background technique [0002] With the development of highway infrastructure, the asphalt industry, which is an irreplaceable material for highway infrastructure, has also made great technological progress. With the continuous improvement of asphalt application level, the shortcomings of traditional hot asphalt have begun to appear. For example, asphalt condenses too fast and needs to be heated repeatedly during use, resulting in a lot of energy waste and environmental pollution. In addition, the secondary construction and Rework will inevitably result in a serious shortage of resources. Investigation and research found that the research and application of asphalt emulsifier is one of the effective ways to solve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L63/00C08L75/08
CPCC08L95/00C08L75/08C08L2205/035C08L53/02C08L63/00
Inventor 欧阳春发吴修春李伟
Owner 襄城县华诚纸箱包装有限公司
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