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A kind of rubber powder modified emulsified asphalt and preparation method thereof

A technology of emulsified asphalt and rubber powder, which is applied in building components, building insulation materials, buildings, etc. It can solve the problems of difficult emulsification, high viscosity, emulsified asphalt demulsification, etc., and achieve good stability, strong absorption capacity, and high solid content. Effect

Active Publication Date: 2019-06-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the rubber powder modified asphalt has a relatively high viscosity. During the emulsification process, due to mixing with the soap solution, the temperature will drop, and the viscosity will be greater, resulting in difficulty in emulsification, and the prepared emulsified asphalt is also prone to demulsification.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Emulsify No. 0 diesel oil, Span-80 and water at a weight ratio of 88:6:6 to obtain an oily emulsion. Swell the 60-mesh rubber powder by spraying, and stir while spraying. The weight ratio of the oily emulsion to the 60-mesh rubber powder is 25:75. Then microwave treatment for 10 minutes under 600w power;

[0028] (2) Stir and mix the 60-mesh pretreated rubber powder after microwave treatment in (1), oleic acid soap and water in a weight ratio of 20: 0.6: 79.4 to make the rubber powder form a suspension, and then add it to the disc grinding equipment for grinding Repeated cyclic grinding, gradually reduce the grinding gap during the cyclic grinding process, through repeated cyclic grinding, the rubber particles in the rubber powder dispersion emulsion are less than 1 micron (tested by laser particle size analyzer), then stop grinding, and make the rubber powder dispersion temperature Keep it at 40-60°C;

[0029] (3) Preparation of rubber powder modified emulsified ...

Embodiment 2

[0031] (1) Emulsify No. 0 diesel oil, Tween-80 and water at a weight ratio of 85:8:7 to obtain an oily emulsion. Swell the 60-mesh rubber powder by spraying, and stir while spraying. The weight ratio of the oily emulsion to the 60-mesh rubber powder is 30:70. Microwave treatment under 1000w power for 5 minutes afterwards;

[0032] (2) Stir and mix the 60-mesh pretreated rubber powder after microwave treatment in (1), disproportionated rosin potassium soap and water at a weight ratio of 20:0.6:79.4 to make the rubber powder form a suspension, and then add it to the disc grinding equipment Carry out repeated cyclic grinding, gradually reduce the grinding gap during the cyclic grinding process, and make the rubber particles in the rubber powder dispersion emulsion less than 1 micron (tested by laser particle size analyzer) through repeated cyclic grinding, then stop grinding, and make the rubber powder dispersion The temperature is kept at 40-60°C;

[0033] (3) Preparation of r...

Embodiment 3

[0035] (1) Emulsify kerosene, Span-80, Tween-80 and water at a weight ratio of 85:4:4:7 to obtain an oily emulsion. Swell the 80-mesh rubber powder by spraying, and stir while spraying. The weight ratio of the oily emulsion to the 80-mesh rubber powder is 30:70. Then microwave treatment for 8 minutes under 600w power;

[0036] (2) Stir and mix 80-mesh pretreated rubber powder, sodium benzenesulfonate and water at a weight ratio of 23:0.8:76.2 to make the rubber powder form a suspension, and then add it to the disc grinding equipment for repeated cycle grinding. During the process, the grinding gap is gradually reduced, and through repeated grinding, the rubber particles in the rubber powder dispersion emulsion are smaller than 1 micron (tested by a laser particle size analyzer), and then the grinding is stopped, and the temperature of the rubber powder dispersion is kept at 40-60°C;

[0037] (3) Preparation of rubber powder modified emulsified asphalt: heat 90A base asphalt a...

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Abstract

The invention discloses a gelatine powder modified emulsified asphalt and a preparation method thereof. The gelatine powder modified emulsified asphalt is prepared from, by weight percent, 45-58% of matrix asphalt and 42-55% of geltatine powder dispersing fluid; the geltatine powder dispersing fluid is prepared from, by weight percent, 20-25% of pretreatment rubber powder, 0.5-1.0% of emulsifier A, and allowance of water. The gelatine powder modified emulsified asphalt can keep stable for a long time, and the evaporation residue performance is obviously better than the technical index of the rubber asphalt.

Description

technical field [0001] The invention relates to an emulsified asphalt and a preparation method thereof, in particular to a rubber powder modified emulsified asphalt and a preparation method thereof. Background technique [0002] The modification of asphalt by rubber powder can improve the advantages of asphalt resistance to low-temperature cracking, anti-aging, anti-fatigue, prolong service life, and improve asphalt's high-temperature stability, so it has developed rapidly in recent years. The preparation of waste rubber powder modified asphalt mostly adopts two processes of "dry method" and "wet method". At present, the "wet method" process is mainly used. In the preparation of "wet method" waste rubber powder modified asphalt, in order to significantly improve the performance of asphalt, the amount of rubber powder added is relatively large, generally more than 15wt%. Due to the large amount of rubber powder added, The material is viscous, so the processing temperature is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L21/00
Inventor 张建峰郭皎河刘树华傅丽姚汉荣
Owner CHINA PETROLEUM & CHEM CORP
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