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Waste rubber powder modified asphalt for roads as well as preparation method and equipment thereof

A technology for modifying asphalt and waste rubber powder, applied in building components, building insulation materials, buildings, etc., can solve problems such as poor storage stability, poor aging resistance, and poor high temperature stability.

Pending Publication Date: 2021-05-11
SHANDONG INNOWIT CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Such as CN101555355B prior art discloses a kind of waste rubber modified asphalt, at present, rubber powder modified asphalt is just attracting people's attention and attention with its excellent performance and resource environmental protection, and rises in China gradually, but rubber powder modified Asphalt has the disadvantages of unstable performance (poor storage stability) and high requirements for mixture ratio design
Modified asphalt has been widely used for its excellent comprehensive performance, but it also has the disadvantages of high price and poor aging resistance
Another typical prior art such as WO2016078156A1 discloses an epoxy rubber asphalt modified coating and its preparation method, as well as a polymer modified asphalt and its preparation method disclosed in the prior art of WO2011057443A1. There is a certain degree of defect in the coating. The asphalt in the coating is easy to be cold and brittle, easy to crack and has thermal fluidity, but the asphalt has the advantages of water resistance and impermeability. The current coating has the advantages of asphalt, but it cannot be avoided. Disadvantages of asphalt, and poor high temperature stability, ease of construction, difficult to pave
[0004] In order to solve the common problems in the field of lack of manufacturing equipment, uneven mixing, easy to cause cracks, poor stability and poor storage stability, etc., the present invention is made

Method used

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  • Waste rubber powder modified asphalt for roads as well as preparation method and equipment thereof
  • Waste rubber powder modified asphalt for roads as well as preparation method and equipment thereof
  • Waste rubber powder modified asphalt for roads as well as preparation method and equipment thereof

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Effect test

Embodiment 1

[0032] Embodiment 1: a kind of waste rubber powder modified asphalt for road, it is characterized in that, described modified asphalt comprises coupling agent, coupler and reinforcing agent, and described coupling agent is configured to increase the abrasion resistance of tire; The coupler is configured to impart stiffness to the tire; the reinforcing agent is configured to enhance interaction of the tire's rubber with carbon black.

[0033] The coupling agent includes the cis-1,4-polybutadiene product in the organic solvent solution polymerization reaction of 1,3-butadiene monomer, and a catalyst is added to the coupling agent, wherein the catalyst includes neodecyl At least one of neodymium octanoate, neodymium octanoate and neodymium vaseline.

[0034] Said coupler includes 1,4-polybutadiene elastomer, polyethylenediene elastomer, rubber-reinforced carbon black, precipitated silica and specified silica coupling agent, wherein, polyethylenediene The elastomer includes at le...

Embodiment 3

[0049] Embodiment 3: This embodiment should be understood as at least including all the features of any one of the preceding embodiments, and further improvements are made on the basis of it. Specifically, a waste rubber powder modified asphalt for roads and its preparation method are provided, equipment, the preparation equipment includes a screening device, a mixing device, an adjustment device, a heating device, an early warning device and a processor, the screening device is configured to screen the rubber powder, and the mixing device is configured to screen the rubber powder The rubber granules and asphalt are mixed, and the adjustment device is configured to dynamically adjust the mixing ratio of the rubber granules and asphalt; the heating device is configured to heat the mixed rubber granules and asphalt; the early warning The device is configured to detect the finished asphalt product, and adjust the ratio of the adjusting device based on the detected data; specifical...

Embodiment 4

[0068] Embodiment 4: This embodiment should be understood as at least including all the features of any one of the foregoing embodiments, and further improvements are made on the basis thereof. Specifically, a waste rubber powder modified asphalt for roads and a preparation method thereof are provided. Raise the base asphalt lower than 170°C to about 190°C-210°C through the rapid heating device; measure the base asphalt through the asphalt flow meter, and then add it to the mixing device; after being weighed by the weighing device, the rubber powder is simultaneously transported to the mixing device in proportion device; rubber crumbs and base asphalt are mixed at a high speed in the mixing device through high-speed stirring and shearing; the uniformly stirred mixture is circulated into the mixing device through a special rubber asphalt pump; the mixture is stirred and kept warm (190°C) in the mixing device --210°C) and swell for about 2 to 6 hours, and the processing time can ...

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Abstract

The invention provides waste rubber powder modified asphalt for roads as well as a preparation method and equipment thereof. The modified asphalt comprises a coupling agent, a color former and a reinforcing agent, wherein the coupling agent is configured to improve the wear resistance of tires; the color former is configured to be rigidity to the tire; the reinforcing agent is configured to enhance interaction with the rubber and carbon black of the tire. The coupling agent comprises a cis-1,4-polybutadiene product in the polymerization reaction of an organic solvent solution of a 1,3-butadiene monomer, and a catalyst is added into the coupling agent, wherein the catalyst comprises neodecanoic acid neodymium, octanoic acid neodymium and vaseline acid neodymium. The coupling agent, the color former and the reinforcing agent can obviously improve the high-temperature stability and the elastic recovery capability of asphalt, reduce the melt viscosity of the styrene-butadiene-styrene block copolymer and improve the fluidity of the polymer; and saturated components in the asphalt are mutually soluble with asphaltene, the dispersion degree of the asphaltene is improved, and the low-temperature performance of the asphalt is improved, so that the low-temperature crack resistance of the asphalt mixture is improved.

Description

technical field [0001] The invention relates to asphalt modification, in particular to a waste rubber powder modified asphalt for roads and a preparation method and equipment thereof. Background technique [0002] A large number of waste automobile tires accumulated will inevitably become a social nuisance. The preparation of waste tires into rubber powder can realize the full utilization of resources and reduce environmental pollution. The preparation of rubber powder modified asphalt has better anti-aging performance and anti-fatigue performance. Ordinary asphalt mixture, after being fully mixed and developed, can improve the high temperature stability, low temperature crack resistance and aging resistance of asphalt. [0003] Such as CN101555355B prior art discloses a kind of waste rubber modified asphalt, at present, rubber powder modified asphalt is just attracting people's attention and attention with its excellent performance and resource environmental protection, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L19/00C08L9/00C08L47/00C08K3/04C08K3/36
CPCC08L95/00C08L2205/035C08L19/003C08L9/00C08L47/00C08K3/04C08K3/36
Inventor 乔永军刘秀娥李勇李尊朋王川刘慧智
Owner SHANDONG INNOWIT CHEM
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