Modified epoxy asphalt and preparation method thereof

A technology of epoxy asphalt and modification, applied in building components, building insulation materials, buildings, etc., can solve the problems of poor compatibility of modified epoxy asphalt, achieve high compatibility, improve compatibility and modification , the effect of improving compatibility

Active Publication Date: 2020-12-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The modified epoxy asphalt of the present invention has high compatibility, effectively solves the problem of poor compatibility of the modified epoxy asphalt, and uses environmentally friendly natural modified materials, and the amount of organic reagents used in the modification process is less

Method used

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  • Modified epoxy asphalt and preparation method thereof
  • Modified epoxy asphalt and preparation method thereof
  • Modified epoxy asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) 60 parts by weight of base asphalt I (25.4wt% saturated, 29.5wt% aromatic, 44.9wt% colloid, 0.2wt% asphaltenes) and 40 parts by weight base asphalt II (saturation 28.6wt%, aromatics accounted for 36.4wt%, colloids accounted for 19.2wt%, asphaltenes accounted for 15.8wt%) preheated to a fluid state and mixed, stirred at 140 ° C for 4 hours, the stirring speed was 300 r / min , to obtain mixed asphalt; then slowly add 0.2 parts by weight of polyphosphoric acid, continue heating to 160 ° C, adjust the stirring speed to 500 r / min, and stir for 6 hours to obtain modified blended asphalt a1.

[0055] (2) Pour 100 parts by weight of modified blended asphalt a1 heated to flow state into the autoclave, adjust the temperature in the autoclave to 110°C, keep stirring at a speed of 300 r / min, and continue stirring for 0.5h after the temperature is constant; 4 parts by weight of β-cyclodextrin were slowly added to the reactor within 1 hour, and the temperature was programmed to ri...

Embodiment 2

[0061] (1) 45 parts by weight of base pitch I (27.1 wt% saturated, 32.2 wt% aromatic, 40.1 wt% colloid, 0.6 wt% asphaltenes) and 55 parts by weight base pitch II (saturated 26.4wt%, aromatics accounted for 33.8wt%, colloids accounted for 17.8wt%, asphaltenes accounted for 22.0wt%) preheated to a fluid state and mixed, stirred at 150°C for 4 hours, the stirring speed was 300 r / min to obtain mixed asphalt; then slowly add 0.3 parts by weight of polyphosphoric acid, continue heating to 170°C, adjust the stirring speed to 500 r / min, and stir for 6 hours to obtain modified blended asphalt a2.

[0062] (2) Pour 100 parts by weight of modified blended asphalt a2 heated to flow state into the autoclave, adjust the temperature inside the autoclave to 120°C, keep stirring at a speed of 300 r / min, and continue stirring for 0.5h after the temperature is constant; 5 parts by weight of β-cyclodextrin were slowly added to the reactor within 1.5 hours, and the temperature was programmed to ri...

Embodiment 3

[0068] (1) Preheat 40 parts by weight of base asphalt I (same as in Example 2) and 60 parts by weight of base asphalt II (same as in Example 2) to a fluid state and mix them at 150°C for 4 hours at a stirring speed of 300 r / min to obtain mixed asphalt; then slowly add 0.2 parts by weight of polyphosphoric acid, continue heating to 170°C, adjust the stirring speed to 500 r / min, and stir for 6 hours to obtain modified blended asphalt a3.

[0069] (2) Pour 100 parts by weight of modified blended asphalt a3 heated to flow state into the autoclave, adjust the temperature inside the autoclave to 120°C, keep stirring at a speed of 300 r / min, and continue stirring for 1.5 hours after the temperature is constant; 5 parts by weight of β-cyclodextrin were slowly added to the reactor within 1.5 hours, and the temperature was programmed to rise to 135°C at a speed of 0.5°C / min. During the addition process, the stirring speed was maintained at 300 r / min, and the stirring was continued for 0....

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Abstract

The invention discloses modified epoxy asphalt and a preparation method thereof. The modified epoxy asphalt comprises the following raw material components in parts by weight: 100 parts of modified blended asphalt, 1-8 parts of cyclodextrin, 0.1-0.9 part of an initiator, 35-64 parts of epoxy resin, 0.04-0.6 part of an accelerant, 5-20 parts of a curing agent A and 20-45 parts of a curing agent B.According to the invention, the problem of poor compatibility of the modified epoxy asphalt is effectively solved, an environment-friendly natural modified material is used, and the use amount of an organic reagent in the modification process is less.

Description

technical field [0001] The invention relates to a modified asphalt and a preparation method thereof, in particular to a highly compatible modified epoxy asphalt and a preparation method thereof. Background technique [0002] Thermosetting epoxy asphalt is an excellent material for paving large-span steel bridge decks. Road workers have invested a lot of energy in the research and development of epoxy asphalt materials, but the differences in physical and chemical properties between asphalt and epoxy resin make the two The compatibility is extremely poor, which affects the development and application of epoxy asphalt materials. [0003] The physical and chemical properties of petroleum asphalt and epoxy resin are quite different. If they are directly mixed, the two are prone to phase separation. The difference in physical and chemical properties between the two is mainly reflected in the solubility parameters, density, dielectric constant and so on. The solubility parameter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L5/16C08L63/00C08K3/32
CPCC08L95/00C08L2205/035C08L2205/025C08L2205/08C08K2003/329C08L5/16C08L63/00C08K3/32Y02A30/30
Inventor 刘成李志军傅丽郭皎河刘树华张建峰
Owner CHINA PETROLEUM & CHEM CORP
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