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Epoxy glue powder asphalt material and preparation method thereof

A technology of asphalt materials and epoxy rubber powder, which is applied to building insulation materials, building components, buildings, etc., can solve the problems of low-temperature fatigue resistance, low ductility, and high-temperature performance of epoxy asphalt, and achieve cost reduction, Effect of improving low temperature flexibility performance

Inactive Publication Date: 2012-11-28
黄卫 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while the epoxy asphalt has such excellent performance, when the temperature gradually drops to the limit low temperature, a large temperature stress will be generated inside the cured epoxy asphalt, which will increase the internal stress of the epoxy resin curing system, make it brittle, Low ductility and silver streaks will eventually lead to cracking of the pavement and decrease in low temperature fatigue resistance
[0003] There are many ways to improve the low-temperature performance of epoxy resin cured materials. Most of them use polymer or macromolecule curing agents, rubber elastomers, plasticizers, etc. to improve the flexibility of epoxy resin after curing. Compounds, rubber elastomers and asphalt have poor compatibility, resulting in easy segregation of epoxy asphalt during use and phase separation during storage, which greatly affects the performance of epoxy asphalt; the use of plasticizers makes epoxy asphalt The high temperature performance of asphalt is greatly reduced

Method used

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  • Epoxy glue powder asphalt material and preparation method thereof
  • Epoxy glue powder asphalt material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Step 1: Mix absolute ethanol, water and diesel oil in a volume ratio of 1:1:1 to form a mixed solution of 80 parts by weight, take 15 parts by weight of KH550 silane coupling agent, add it to the mixed solution, and stir evenly , to obtain the hydrolyzate of the silane coupling agent;

[0054] Step 2: Soak 40 parts by weight of rubber particles with a particle size range of 80-250 mesh in the hydrolyzed solution of silane coupling agent for 48 hours, use oil-absorbing paper to absorb the solvent, and freeze-dry to obtain surface and interface activated rubber particles. agent;

[0055] Step 3: Add the surface and interface activated colloid curing agent obtained in Step 2 to 60 parts by weight of base asphalt, shear slowly at 160°C for 2 hours, then shear at 150°C for 1 hour at high speed, and lower the temperature to 120°C. Then add 130 parts by weight of the modified asphalt with anhydride group obtained by the Diels-Alder reaction between the maleic acid dienophile ...

Embodiment 2

[0058] Step 1: Mix absolute ethanol, water and diesel oil in a volume ratio of 1:1:1 to form a mixed solution of 80 parts by weight, take 16 parts by weight of KH550 silane coupling agent, add it to the mixed solution, and stir evenly , to obtain the hydrolyzate of the silane coupling agent;

[0059] Step 2: Soak 44 parts by weight of rubber particles with a particle size range of 80-250 mesh in the hydrolyzed solution of silane coupling agent for 48 hours, use oil-absorbing paper to absorb the solvent, and freeze-dry to obtain surface and interface activated rubber particles. agent;

[0060] Step 3: Add the surface and interface activated colloid curing agent obtained in Step 2 to 64 parts by weight of base asphalt, shear slowly at 170°C for 2 hours, then shear at 152°C for 1 hour at high speed, and lower the temperature to 124°C , then add 136 parts by weight of modified asphalt with anhydride groups obtained by the Diels-Alder reaction between maleic acid dienophile and ba...

Embodiment 3

[0063] Step 1: Mix absolute ethanol, water and diesel oil in a volume ratio of 1:1:1 to form a mixed solution of 80 parts by weight, take 17 parts by weight of KH590 silane coupling agent, add it to the mixed solution, and stir evenly , to obtain the hydrolyzate of the silane coupling agent;

[0064] Step 2: Take 48 parts by weight of rubber particles with a particle size ranging from 80 to 250 mesh and soak them in the hydrolyzed solution of silane coupling agent for 48 hours, use oil-absorbing paper to absorb the solvent, and freeze-dry to obtain surface and interface activated rubber particles. agent;

[0065] Step 3: Add the surface and interface activated colloid curing agent obtained in Step 2 to 68 parts by weight of base asphalt, shear slowly at 180°C for 2.5h, then shear at 154°C for 1.5h at high speed, and lower the temperature to 128°C ℃, then add 142 parts by weight of modified asphalt with anhydride group obtained by Diels-Alder reaction between maleic acid dieno...

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Abstract

The invention relates to an epoxy glue powder asphalt material and a preparation method thereof. A macromolecular curing agent, a rubber elastomer, a plasticizer and the like are used for improving the flexibility of the cured epoxy resin so as to improve the low-temperature performance of the epoxy resin curing material, but the epoxy asphalt is easy to separate caused by low compatibility of the macromolecular compound, the rubber elastomer and the asphalt. The preparation method comprises the following steps: soaking rubber particles into the hydrolysate of a silane coupling agent to obtain a surface and interface activated rubber particle curing agent, adding into the matrix asphalt, cutting, cooling, adding modified asphalt, plasticizer, aliphatic dibasic acid, dimer acid or alkyd resin and fatty acid anhydride and obtaining an epoxy asphalt component B under the action of a shearing and emulsifying machine; and mixing and stirring the epoxy asphalt component A namely the epoxy resin and the epoxy asphalt component B to obtain the activated rubber particle modified epoxy asphalt material. According to the invention, the low-temperature flexibility of the epoxy asphalt is obviously improved; and a large amount of activated rubber particles are added, so the cost of the epoxy asphalt is greatly reduced.

Description

technical field [0001] The invention relates to an asphalt material and a preparation method thereof, in particular to an epoxy rubber powder asphalt material and a preparation method thereof. Background technique [0002] Epoxy asphalt is a kind of thermosetting high-elastic asphalt material formed by mixing epoxy resin and petroleum asphalt mixed with curing agent in a certain proportion at a specific temperature. It fundamentally changes the thermoplasticity of ordinary asphalt. It has high strength, Excellent anti-fatigue performance, good durability and excellent anti-aging performance. However, while the epoxy asphalt has such excellent performance, when the temperature gradually drops to the limit low temperature, a large temperature stress will be generated inside the cured epoxy asphalt, which will increase the internal stress of the epoxy resin curing system, make it brittle, The ductility is low, and silver streaks are generated, which eventually leads to cracki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L63/02C08L21/00C08L67/06C08L69/00C08K5/1539C08K5/1515C08K5/521C08K5/12C08K5/092
Inventor 黄卫陈团结钱振东
Owner 黄卫
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