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A kind of modified emulsified asphalt and preparation method thereof

A technology of emulsified asphalt and modification, applied in building components, building insulation materials, construction, etc., can solve the problem that asphalt cannot meet the needs of use, and achieve excellent shear damage resistance, a wide range of raw material sources, and good weather resistance. Effect

Active Publication Date: 2021-06-04
SHANDONG LUQIAO GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Emulsified asphalt provides a system that is safer, energy-saving and environmentally friendly than hot asphalt, but with the development of social urbanization, technology, and humanization, people have higher and higher requirements for asphalt, and the existing asphalt is not It can meet the needs of use and needs further improvement

Method used

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  • A kind of modified emulsified asphalt and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of modified emulsified asphalt comprises the following steps:

[0032] (1) Heat 100 parts by weight of water to 80°C, then add 5 parts by weight of polyvinyl alcohol, 4 parts by weight of talcum powder, 4 parts by weight of ethanol, 1.6 parts by weight of cationic emulsifier, 0.04 parts by weight of tall oil, 0.8 parts by weight Parts by weight of polyacrylamide were stirred and mixed for 10 minutes at a speed of 300 r / min, and then 100 parts by weight of base asphalt and 5 parts by weight of thermoplastic styrene-butadiene rubber were added to heat up to 155°C and stirred and mixed for 20 minutes at a speed of 300 r / min to obtain a mixture;

[0033] (2) Shear and disperse the mixture at a speed of 1200r / min for 20 minutes to obtain modified emulsified asphalt.

[0034] The base asphalt is petroleum asphalt.

[0035] The cationic emulsifier is cetyltrimethylammonium chloride.

[0036] The polyacrylamide is nonionic polyacrylamide.

Embodiment 2

[0038] The preparation method of modified emulsified asphalt comprises the following steps:

[0039] (1) Heat 100 parts by weight of water to 80°C, then add 5 parts by weight of polyvinyl alcohol, 4 parts by weight of modified talcum powder, 4 parts by weight of ethanol, 1.02 parts by weight of antioxidant, and 1.6 parts by weight of cationic emulsifier , 0.04 parts by weight of tall oil, and 0.8 parts by weight of polyacrylamide were stirred and mixed for 10 minutes at a speed of 300r / min, and then 100 parts by weight of base asphalt and 5 parts by weight of thermoplastic styrene-butadiene rubber were heated to 155°C and stirred at a speed of 300r / min Mix for 20min to obtain the mixture;

[0040] (2) Shear and disperse the mixture at a speed of 1200r / min for 20 minutes to obtain modified emulsified asphalt.

[0041] The base asphalt is petroleum asphalt.

[0042] The cationic emulsifier is cetyltrimethylammonium chloride.

[0043] The antioxidant is p-cresol-dicyclopentadien...

Embodiment 3

[0047] The preparation method of modified emulsified asphalt comprises the following steps:

[0048] (1) Heat 100 parts by weight of water to 80°C, then add 5 parts by weight of polyvinyl alcohol, 4 parts by weight of talcum powder, 4 parts by weight of ethanol, 1.02 parts by weight of antioxidant, 1.6 parts by weight of cationic emulsifier, 0.04 parts by weight Stir and mix parts by weight of tall oil and 0.8 parts by weight of polyacrylamide at a speed of 300r / min for 10 minutes, then add 100 parts by weight of base asphalt and 5 parts by weight of thermoplastic styrene-butadiene rubber and heat up to 155°C and stir and mix for 20 minutes at a speed of 300r / min , to get the mixture;

[0049] (2) Shear and disperse the mixture at a speed of 1200r / min for 20 minutes to obtain modified emulsified asphalt.

[0050] The base asphalt is petroleum asphalt.

[0051] The cationic emulsifier is cetyltrimethylammonium chloride.

[0052] The antioxidant is p-cresol-dicyclopentadiene ...

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Abstract

The invention discloses a modified emulsified asphalt and a preparation method thereof. The preparation method comprises the following steps: (1) heating water to 70-90°C, and then sequentially adding polyvinyl alcohol, talcum powder, ethanol, and an antioxidant , cationic emulsifier, tall oil, polyacrylamide at a speed of 200-500r / min and stir and mix for 5-15min, then add base asphalt, thermoplastic styrene-butadiene rubber and heat up to 125-175°C at a speed of 200-500r / min Stir and mix for 10-30 minutes to obtain a mixture; (2) shear and disperse the mixture at a speed of 1000-5000r / min for 15-45min to obtain the final product. The modified emulsified asphalt of the present invention, the modified emulsified asphalt prepared by using a reasonable ratio of various raw materials improves the bonding ability of the modified emulsified asphalt; the modified emulsified asphalt of the present invention has good stability and oxidation resistance, The mechanical properties and anti-rutting ability of the asphalt are improved, and at the same time, the weather resistance is good, and the modified emulsified asphalt can be adapted to harsh environments; the preparation method of the modified emulsified asphalt of the present invention has simple operation, wide source of raw materials, and low cost.

Description

technical field [0001] The invention relates to the technical field of asphalt, in particular to a modified emulsified asphalt and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, the traffic volume of highways and urban roads is increasing and the overweight of vehicles is becoming more and more serious. The wear and damage to the road surface are greatly increased than before, which leads to the early occurrence of diseases within the service life of the road. As the road surface seal that is in direct contact with the vehicle, it is often the first to be damaged, causing cracks, longitudinal cracks, looseness, wave wrapping, rutting and other road surface damage problems. If maintenance and repairs are not carried out in time, the performance of the road surface will be affected. and service life. Nowadays, there are mainly two types of pavement seal repair materials: hot asphalt and emulsified asphalt, but h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L29/04C08L9/06C08L33/26C08K13/06C08K9/06C08K3/34
CPCC08L95/00C08L2201/08C08L2205/035C08L29/04C08L9/06C08L33/26C08K13/06C08K9/06C08K3/34
Inventor 刘建军
Owner SHANDONG LUQIAO GROUP CO LTD
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