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Modified asphalt viscosity reducer and preparation method thereof

A technology of modified asphalt and viscosity reducer, which is applied to building components, building insulation materials, buildings, etc., can solve the problem that the viscosity reduction performance of modified asphalt needs to be optimized, and achieves improved peeling resistance, simple preparation method, and reduced high temperature. The effect of viscosity

Pending Publication Date: 2020-06-19
CHONGQING JIAOTONG UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the viscosity reducer has a good viscosity reduction effect on No. 70 asphalt, its viscosity reduction performance on modified asphalt needs to be optimized

Method used

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  • Modified asphalt viscosity reducer and preparation method thereof

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Embodiment 1

[0019] A modified asphalt viscosity reducer, the raw material of which is composed of 30 parts by weight of oxidized polyethylene wax, 10 parts of montan wax, 5 parts of iron stearate, 3 parts of zeolite powder and 2 parts of compatibilizer. In this embodiment: the oxidized polyethylene wax is a low molecular weight ethylene-vinyl acetate copolymer containing carbonyl groups, the molecular weight is 3000-4000, the iron element content of iron stearate is 6.0-7.0%, and the loss on drying is less than 1%. The melting point of zeolite is 80-85°C, and the particle size of zeolite powder is 400-600 mesh.

[0020] In the present embodiment, the preparation method of the modified asphalt viscosity reducer is as follows, and the specific steps include: step 1, first mix 10kg2.2.4-trimethyl 1.3-pentanediol diisobutyrate with 10kg dioctyl phthalate Put it into a 50L wide-mouth container and stir for 20min to prepare a mixture compatibilizer; then place 30kg of zeolite powder in a horizo...

Embodiment 2

[0026] A modified asphalt viscosity reducer, the raw material of which is composed of 20 parts by weight of oxidized polyethylene wax, 4 parts of montan wax, 1 part of iron stearate, 1 part of zeolite powder and 1 part of compatibilizer. In this embodiment: the oxidized polyethylene wax is a low molecular weight ethylene-vinyl acetate copolymer containing carbonyl groups, the molecular weight is 3000-4000, the iron element content of iron stearate is 6.0-7.0%, and the loss on drying is less than 1%. The melting point of zeolite is 80-85°C, and the particle size of zeolite powder is 400-600 mesh.

[0027] In the present embodiment, the preparation method of the modified asphalt viscosity reducer is as follows, and the specific steps include: step 1, first mix 5kg2.2.4-trimethyl 1.3-pentanediol diisobutyrate with 5kg dioctyl phthalate Put it into a 50L wide-mouth container and stir for 20min to prepare the mixture compatibilizer; then place 10kg of zeolite powder in a horizontal...

Embodiment 3

[0029] A modified asphalt viscosity reducer, the raw material of which is composed of 40 parts by weight of oxidized polyethylene wax, 20 parts of montan wax, 10 parts of iron stearate, 10 parts of zeolite powder and 5 parts of compatibilizer. In this embodiment: the oxidized polyethylene wax is a low molecular weight ethylene-vinyl acetate copolymer containing carbonyl groups, the molecular weight is 3000-4000, the iron element content of iron stearate is 6.0-7.0%, and the loss on drying is less than 1%. The melting point of zeolite is 80-85°C, and the particle size of zeolite powder is 400-600 mesh.

[0030] In the present embodiment, the preparation method of the modified asphalt viscosity reducer is as follows, and the specific steps include: step 1, first mix 25kg2.2.4-trimethyl 1.3-pentanediol diisobutyrate with 25kg dioctyl phthalate Put it into a 100L wide-mouth container and stir for 20min to prepare the mixture compatibilizer; then place 100kg of zeolite powder in a ...

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Abstract

The invention provides a modified asphalt viscosity reducer and a preparation method thereof. The modified asphalt viscosity reducer is prepared from the following raw materials in parts by weight: 20to 40 parts of oxidized polyethylene wax, 4 to 20 parts of lignite wax, 1 to 10 parts of ferric stearate, 1 to 10 parts of zeolite powder and 1 to 5 parts of compatilizer. The preparation method comprises the following steps: step 1, adding the compatilizer into stirred zeolite powder to prepare a blend; and step 2, mixing the obtained blend with oxidized polyethylene wax, lignite wax and iron stearate, and stirring to obtain the modified asphalt viscosity reducer. The preparation method of the modified asphalt viscosity reducer is simple, and the prepared modified asphalt viscosity reducer not only can effectively reduce the high-temperature viscosity of the modified asphalt, but also can improve the stripping resistance of the modified asphalt.

Description

technical field [0001] The invention relates to asphalt auxiliary materials, in particular to a modified asphalt viscosity reducer and a preparation method thereof. Background technique [0002] Modified asphalt refers to adding modifiers such as rubber, resin, high molecular polymer, ground rubber powder or other fillers or taking measures such as mild oxidation of asphalt to improve the performance of asphalt or asphalt mixture. The asphalt binder is widely used in road pavement engineering, waterproof engineering and other fields. In order to make the modified asphalt uniformly mixed and easy to process, it is necessary to ensure the fluidity of the asphalt, that is, the viscosity of the system is reduced to below a certain level. In this regard, the current commonly used method is to use a higher processing temperature (the processing temperature is basically around 160°C to 170°C) to achieve this purpose, but at this temperature, a lot of energy will be consumed, and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/30C08L91/06C08L95/00C08K5/098C08K7/26C08K5/103C08K5/12C08K13/04
CPCC08L23/30C08L95/00C08L2205/035
Inventor 赵玲盛兴跃杨波刘攀
Owner CHONGQING JIAOTONG UNIVERSITY
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