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Thermosetting epoxy asphalt materials for pavement and bridge and process for preparing same

A technology of epoxy asphalt material and asphalt material, which is applied to building insulation materials, roads, roads, etc., can solve the problem of not considering the pot life, it is difficult to meet the requirements of large-span bridge paving, and the control of the pot life is not involved. , to achieve the effect of outstanding high temperature stability, high strength and excellent fatigue resistance

Active Publication Date: 2006-09-27
JURONG NINGWU SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Generally speaking, asphalt is modified by polymers at home and abroad. In China, asphalt is mainly modified by fillers and cross-linking materials, which is helpful to improve the service temperature and elasticity of asphalt; however, they are all thermoplastic in nature. Modification cannot fundamentally change the viscoelastic nature of asphalt, and it is difficult to meet the paving requirements of long-span bridges; the research on epoxy asphalt has just started, and has not yet involved the key requirements in applications such as pot life control
There are also many foreign patents on the use of epoxy resin to modify asphalt. From the perspective of trends, monomers with better compatibility with asphalt are copolymerized with monomers containing epoxy groups to obtain better compatibility with asphalt. At the same time, the asphalt is modified and the polyamine curing agent is used; the thermosetting asphalt prepared by this kind of patent is often used as a coating or roof waterproof material, so the pot life in engineering practice is not considered.

Method used

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  • Thermosetting epoxy asphalt materials for pavement and bridge and process for preparing same
  • Thermosetting epoxy asphalt materials for pavement and bridge and process for preparing same

Examples

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Effect test

Embodiment 1

[0038] The present invention will be further described below through specific examples, but none of the examples limits the present invention. Example 1: Add 57 parts (mass, the same below) of petroleum asphalt (origin: Shanjiasi) heated to 90-140°C into the reactor, add 1.14 parts of maleic anhydride, heat up to 150-155°C, and wait for the pressure to stabilize , into N 2 , keep the total pressure at 0.25MPa, and after 4 hours of reaction, slowly release the pressure to 0.1MPa. Then add 17.16 parts of oxalic acid, 5 parts of polyisobutylene succinic anhydride (average molecular weight: 5100, Changzhou Guanghui High-tech Chemical Co., Ltd.), polyoxalic anhydride (average molecular weight: 1500, Changzhou Guanghui High-tech Chemical Co., Ltd.) 17.6 parts, 0.24 parts of triethylamine, pre-mixed for 30 minutes; then dispersed at high speed through a colloid mill to obtain part A, and finally added part B epoxy resin (E-51, Wuxi resin plant) mix well. This material can be used ...

Embodiment 2

[0039] Example 2: Add 57.3 parts of petroleum asphalt (US Shell) heated to 90-140 ° C into the reactor, add 4 parts of maleic anhydride, heat up to 155-160 ° C, and after the pressure is stable, feed N 2 , keep the total pressure at 0.45MPa, and after 5 hours of reaction, slowly release the pressure to 0.1MPa. Then add 15.13 parts of dimer acid (Zhejiang Yongzai Chemical Factory), 10 parts of adipic acid, 3 parts of polyisobutylene succinic anhydride (average molecular weight 2400, Changzhou Guanghui High-tech Chemical Co., Ltd.) that have been heated to 90-140 ° C in advance, 10 parts of polyazelaic anhydride (average molecular weight 1200, Changzhou Guanghui High-tech Chemical Co., Ltd.) and 0.57 parts of triethylamine were pre-mixed for 30 minutes and dispersed at high speed through a colloid mill to obtain part A. When using, part A and part B (ring Oxygen resin E-51) was heated up to 120°C, and mixed uniformly at a ratio of 4:1. This material can be used as a bonding lay...

Embodiment 3

[0040] Example 3: Add 68 parts of petroleum asphalt (US Shell) heated to 90-140°C into the reactor, add 8.2 parts of maleic anhydride, heat up to 230°C for reaction, and reflux with 80°C warm water at the same time, after 6 hours of reaction, the alcohol Acid resin (brand 3370A, Jiangsu Sanmu Group Co., Ltd.) 14.4 parts, methyl nadic anhydride (Changzhou Guanghui High-Tech Chemical Co., Ltd.) 5 parts, polyglutaric anhydride (average molecular weight 1200, Changzhou Guanghui High-Tech Chemical Co., Ltd.) 7 1 part, and 0.6 part of diethylenetriamine were added to the reactor, stirred and mixed for 1 hour, and finally dispersed at high speed in the colloid mill to obtain part A; when in use, part A and part B (epoxy resin E-44 ) to 120°C and mix at a ratio of 5:1. This material can be used as a bonding layer for pavement. See Table 1 for specific properties.

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Abstract

The invention discloses a bridge heat fixed epoxy tar material and preparing method, which consists of A and B, wherein A part quality component is 60-76 modified tar with carboxy group or acid anhydride, grease group diacid, 11-25 dimer acid or alkyd resin, 10-25 fatty acid and 0.05-0.65 solidifying celeratist; B is epoxy resin; the quality rate of A and B is 2:1-8:1. The invention possesses high strength and good flexibility, which is fit for higher occasion.

Description

technical field [0001] The invention relates to a chemically modified asphalt. Background technique [0002] Asphalt is commonly used as a paving and waterproofing material and is thermoplastic in nature. This characteristic is manifested in the asphalt paved road surface. In the summer high temperature season, the pavement is prone to rutting under heavy loads, and in the cold winter season, it is prone to temperature shrinkage cracks. With the improvement of road grades and long-span steel box girder bridges The widespread use of paving materials puts forward high requirements on the strength, deformation stability and fatigue durability of paving materials. As an important part of the bridge vehicle system, the quality of bridge deck pavement directly affects the safety, comfort, bridge durability and investment economic benefits of driving. Obviously, such a high performance requirement cannot be met by ordinary asphalt, and modified asphalt must be used. [0003] The...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K5/09E01C7/20C08L63/00
Inventor 黄卫陈志明亢阳闵召辉应军
Owner JURONG NINGWU SCI & TECH DEV
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