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Direct-casting type anti-track agent and preparation method

An anti-rutting agent, direct investment technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of poor compatibility between modifier and asphalt, complex and time-consuming preparation process, unstable performance, etc. Good capacity, improved flow ability and processing performance, and improved anti-rutting ability

Active Publication Date: 2014-06-04
SHANGHAI PUDONG ROAD & BRIDGE GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first method needs to go through the processes of swelling, dispersion, grinding and continued development, the preparation process is complicated and time-consuming, and the compatibility of rubber and plastic with asphalt is poor, and a large amount of solvent is required, which is not economical and environmentally friendly; in the second method, SBS And SBR has poor compatibility with asphalt, especially in the process of masterbatch cooling, transportation and storage, modifier segregation is easy to occur, resulting in unstable performance. In addition, the process of producing SBS and SBR modified asphalt needs to use a large amount of sulfur, which is easy polluted environment
[0004] All in all, these two methods have poor compatibility between modifier and asphalt, and serious segregation phenomenon.
In addition, as resource shortages and environmental pollution problems become increasingly acute, these two methods are time-consuming, wasteful, and pollute the environment, which is contrary to the purpose of building a low-carbon and energy-saving society in my country

Method used

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  • Direct-casting type anti-track agent and preparation method
  • Direct-casting type anti-track agent and preparation method
  • Direct-casting type anti-track agent and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Weigh 40 parts of regenerated low-density polyethylene; 15 parts of regenerated polymethyl acrylate; 2 parts of regenerated polyethylene wax; 1 part of nano-shell powder with a particle size range of 100 nm to 150 nm; 10 parts of hard asphalt.

[0039] First, heat the hard asphalt at 150°C for 15 minutes with stirring at 5 r / min;

[0040] Then add regenerated low-density polyethylene, regenerated polymethylacrylate, regenerated polyethylene wax and nano-shell powder to the hot hard asphalt, and stir for 5min at a speed of 5r / min; after completing this step, put the mixture at 140°C Heating for 5 hours;

[0041] Then, under the condition of 160° C., the mixture was stirred for 50 minutes at a speed of 30 r / min;

[0042] Finally, the direct-throwing anti-rutting agent is prepared by forming, shearing and granulating through a single-screw extruder.

Embodiment 2

[0044] Take by weight 30 parts of regenerated low-density polyvinyl chloride; 15 parts of regenerated ethylene-vinyl acetate copolymer; 3 parts of regenerated polyethylene wax; 1 part of nano-hydroxyapatite powder with a particle size ranging from 50nm to 150nm; 8 parts of hard asphalt; 0.02 parts of anti-stripping agent.

[0045]First, at 160°C, stir and heat the hard asphalt at 4r / min for 10min;

[0046] Then add regenerated low-density polyvinyl chloride, regenerated ethylene-vinyl acetate copolymer, regenerated polyethylene wax and nanometer hydroxyapatite powder in the hard bitumen of heat, stir 5min with the rotating speed of 8r / min; After completing this step, The mixture was heated at 135°C for 4.5h;

[0047] Then add anti-stripping agent to the mixture and stir for 4 minutes at a speed of 3r / min; then stir the mixture for 40min at a speed of 25r / min at 170°C; this example calculates the need to add Anti-stripping agent, the anti-stripping agent is an amine compound ...

Embodiment 3

[0050] Weigh 20 parts of recycled polypropylene; 10 parts of recycled polyethylacrylate; 4 parts of recycled polyvinyl chloride wax; 2 parts of nano shrimp shell powder with a particle size ranging from 50nm to 150nm; 9 parts of hard asphalt; anti-stripping 0.03 parts of the agent.

[0051] First, at 170°C, stir and heat the hard asphalt at 3r / min for 8min;

[0052] Then add regenerated polypropylene to the hot hard asphalt; Regenerated polyethyl acrylate; Regenerated polyvinyl chloride wax; Nano shrimp shell powder, stirred at a speed of 6r / min for 5min; Heating for 4h;

[0053] Then add anti-stripping agent to the mixture and stir for 5 minutes at a speed of 4r / min; then stir the mixture for 30 minutes at a speed of 20r / min at 160°C; this example calculates the need to add Anti-stripping agent, the anti-stripping agent is an amine compound or a surfactant of phosphorus hydroxyl organic matter; it is mainly used to increase the adhesion between asphalt and stone, and the ad...

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Abstract

The invention discloses a direct-casting type anti-track agent, which is formed by the following components by weight in mixing mode: 20 to 40 parts of regenerative polyolefine plastic, 10 to 20 parts of regenerative polyester plastic, 2 to 10 parts of regenerative wax, 2 to 10 parts of organic powder body with small particle size and 5 to 10 parts of gilsonite. A preparation method of the direct-casting type anti-crack agent and a method for preparing asphalt mixture by adopting the direct-casting type anti-crack agent are further disclosed. Particles of the direct-casting type anti-crack agent can be directly cast in hot aggregate on construction sites to be mixed with the hot aggregate in drying mode, intermittent construction can be conducted, and the direct-casting type anti-track agent lowers or reduces probability of separation of modified asphalt in the cooling, transporting and storing processes, and break through limit and restraint brought by continuous production and construction.

Description

technical field [0001] The invention belongs to the field of composite polymer materials, and relates to a direct-injection anti-rutting additive (trade name: asphalt) capable of improving the anti-rutting ability of asphalt mixture pavement, a preparation method thereof, and preparation of asphalt by using the direct-injection anti-rutting agent Mixture method. Background technique [0002] With the continuous improvement of my country's economic level, the demand for motor vehicles has increased sharply and the types have diversified, which has promoted the vigorous development of the asphalt road industry. Correspondingly, the requirements for the performance of asphalt roads are getting higher and higher. How to prevent and reduce asphalt pavement diseases has become another focus of attention and research by road construction, maintenance and research workers under external conditions such as increased heavy-duty vehicles and deteriorating climatic conditions. Among t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L23/06C08L27/06C08L23/12C08L31/04C08L33/12C08L23/08C08L33/14C08L33/08C08K3/26C08K3/32C08K3/22C04B26/26
Inventor 赫振华李交张毅邓国民夏庆宇徐韵淳闫国杰刘钢连萍马利志
Owner SHANGHAI PUDONG ROAD & BRIDGE GRP CO LTD
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