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Low-temperature formed polymer modified asphalt and preparation method thereof

A technology for modifying asphalt and polymers, which can be used in building structures, building insulation materials, building components, etc. It can solve problems such as fuel consumption and pollutant emissions, and achieve low molding temperature, reduced energy consumption, and good compatibility Effect

Active Publication Date: 2021-07-09
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, naphthenic base oil resources are scarce, and the reserves only account for 2.2% of the world's proven oil reserves, which is a scarce resource.
And this method does not solve the problem of too high molding temperature of asphalt, and still causes a large amount of pollutant emissions and fuel consumption

Method used

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  • Low-temperature formed polymer modified asphalt and preparation method thereof
  • Low-temperature formed polymer modified asphalt and preparation method thereof
  • Low-temperature formed polymer modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The low molding temperature polymer modified asphalt of the present invention and its preparation method, the preparation steps are as follows:

[0034] S1. Pretreatment: Mix 3 parts of styrene-glycidyl methacrylate copolymer with 3 parts of C9 petroleum resin at 100°C to obtain a pretreatment agent, raise the temperature to 160°C, and place 6 parts of SBS modifier in the pretreatment Fully stir and mix in the treatment agent, and simultaneously shear at a high speed, the shear speed is 3500r / min, and the shear time is 1h to obtain the SBS / styrene-glycidyl methacrylate copolymer / C9 petroleum resin mixture;

[0035] S2. Asphalt modification: Heat 52 parts of base asphalt to 160°C, take the above SBS / styrene-glycidyl methacrylate copolymer / C9 petroleum resin mixture, add 10 parts of plasticizer and 18 parts of filler, place in Mix evenly in the base asphalt, and at the same time highly shear, the shear speed is 7000r / min, the shear time is 1h, and then maintain the temper...

Embodiment 2

[0037] The low molding temperature polymer modified asphalt of the present invention and its preparation method, the preparation steps are as follows:

[0038] S1. Pretreatment: Fully mix 4 parts of styrene-glycidyl methacrylate copolymer with 4 parts of C9 petroleum resin at 95°C to obtain a pretreatment agent, raise the temperature to 150°C, and place 8 parts of SBS modifier in the pretreatment Fully stir and mix in the treatment agent, and simultaneously shear at a high speed, the shear speed is 4000r / min, and the shear time is 1h to obtain the SBS / styrene-glycidyl methacrylate copolymer / C9 petroleum resin mixture;

[0039]S2. Asphalt modification: Heat 55 parts of base asphalt to 150°C, take the above SBS / styrene-glycidyl methacrylate copolymer / C9 petroleum resin mixture, add 9 parts of plasticizer and 22 parts of filler, place in Mix evenly in the base asphalt, and at the same time, high shear, the shear speed is 6600r / min, the shear time is 1h, and then maintain the temp...

Embodiment 3

[0041] The low molding temperature polymer modified asphalt of the present invention and its preparation method, the preparation steps are as follows:

[0042] S1. Pretreatment: Mix 5 parts of styrene-glycidyl methacrylate copolymer with 5 parts of C9 petroleum resin at 100°C to obtain a pretreatment agent, raise the temperature to 140°C, and place 10 parts of SBS modifier in the pretreatment Fully stir and mix in the treatment agent, and simultaneously shear at a high speed, the shear speed is 3700r / min, and the shear time is 1h to obtain the SBS / styrene-glycidyl methacrylate copolymer / C9 petroleum resin mixture;

[0043] S2. Asphalt modification: Heat 50 parts of base asphalt to 140°C, take the above SBS / styrene-glycidyl methacrylate copolymer / C9 petroleum resin mixture, add 11 parts of plasticizer and 19 parts of filler, place in Mix evenly in the base asphalt, and at the same time, high shear, the shear speed is 8000r / min, the shear time is 1h, and then maintain the temper...

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Abstract

The invention discloses low-temperature formed polymer modified asphalt and a preparation method thereof. The low-temperature formed polymer modified asphalt is prepared by mixing matrix asphalt, an SBS elastomer polymer and a pretreating agent. The pretreating agent is a mixture of styrene-glycidyl methacrylate copolymer (hereinafter referred to as styrene-GMA copolymer) and C9 petroleum resin. The pretreating agent is used for pretreating the SBS elastomer polymer, so that the SBS is swelled. Therefore, when the SBS and the asphalt are mixed and modified, the system has better dispersity, compatibility and stability, and finally the related performance of the polymer modified asphalt is improved. All performance indexes of the polymer modified asphalt meet detection standard requirements, the forming temperature is reduced to 130-160 DEG C from the original 170-200 DEG C and is reduced by about 40 DEG C, and the problems of poor compatibility, high forming temperature, large asphalt smoke emission and the like in the existing SBS polymer modified asphalt production are solved.

Description

technical field [0001] The invention belongs to the technical field of asphalt materials, and in particular relates to a low-temperature molding polymer modified asphalt and a preparation method thereof. Background technique [0002] With the rapid development of my country's construction industry and highway industry, the performance and quality of asphalt needs to be improved accordingly. Because of its excellent performance and quality, SBS (styrene-butadiene-styrene block copolymer) modified asphalt is the most successful and widely used polymer modified asphalt at home and abroad, accounting for 61% of the global asphalt demand. % as much. Compared with the traditional base asphalt, SBS modified asphalt has the characteristics of good elasticity and high elongation; temperature stability, high and low temperature performance; weather resistance, fatigue resistance and other characteristics. [0003] SBS modified asphalt is a process in which SBS polymer modifier compl...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L25/14C08L57/02
CPCC08L95/00C08L2201/08C08L2205/08C08L53/02C08L25/14C08L57/02
Inventor 陈威李维和贺行洋苏英秦义良郑襄南赖志辉陈顺李玉博王迎斌杨进
Owner HUBEI UNIV OF TECH