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A kind of high-viscosity asphalt and preparation method thereof

A technology of high-viscosity asphalt and asphalt raw materials, applied in building components, building insulation materials, construction, etc., can solve the problems of difficult operation and high cost, achieve good aging resistance, low cost, ensure thermal stability and aging resistance Effect

Active Publication Date: 2018-06-29
涂淑光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Like high-viscosity asphalt, although there are some solutions at present, they are all costly and difficult to operate, so people still need a simple, effective and low-cost method to increase the viscosity of existing asphalt to apply to higher standards. Recycling and reuse of asphalt also hope to reduce the molecular weight loss and performance decline of recycled materials

Method used

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  • A kind of high-viscosity asphalt and preparation method thereof
  • A kind of high-viscosity asphalt and preparation method thereof
  • A kind of high-viscosity asphalt and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0019] See Table 1. First, the asphalt material is heated and completely melted to a liquid state, and other components are added when the temperature is controlled at about 180 °C until the material is completely melted; the tackifier is obtained by polymerization of an aromatic vinyl copolymer and a reactive monomer (The amount of active monomer is 5%), such as polystyrene, styrene-acrylonitrile copolymer, styrene-acrylonitrile-butadiene copolymer, styrene-butadiene graft copolymer, styrene-butadiene One or more of ethylene block copolymers, hydrogenated styrene-butadiene block copolymers and one of glycidyl methacrylate, maleic anhydride, acrylic acid, and isocyanate as active monomers Or several kinds of aggregates can be obtained. After the material was cooled, the ductility, penetration and softening point were tested, and the results are shown in Table 2. The ductility, penetration and softening point parameters of the high-viscosity asphalt prepared by the method are ...

Embodiment 2

[0025] Refer to the composition of raw materials shown in Table 3. First, heat the asphalt material to completely dissolve it to a liquid state. When the temperature is controlled at about 180°C, add other components until the material is completely melted. The viscosity of the material was tested at 60°C after cooling, and the results are shown in Table 4. The high-viscosity asphalt prepared by this method has a viscosity greater than 2.0×10 at 60°C 4 Pa.s, in line with industry-related standards.

[0026] Table 3 Raw material composition (mass ratio)

[0027]

[0028] Table 4 Viscosity test results of samples at 60°C

[0029] sample

Embodiment 3

[0031] First, the asphalt material (30# base asphalt / recycled asphalt) is heated to completely melt to a liquid state, and when the temperature is controlled at about 180°C, 4% rubber powder and 6% SBS are added until the material is completely melted to obtain high-viscosity asphalt. Compared with existing Japanese products, the test results are shown in Table 5.

[0032] Table 5 Test results

[0033]

[0034] The method of the present invention enables the asphalt to form a moderately cross-linked network structure through the reaction of the active monomer of the tackifier and the asphalt, and prepares high-viscosity asphalt, which can improve the physical and chemical properties of the asphalt, and improve the penetration, softening point, and extension of the traditional asphalt. Degree and viscosity and other properties, the softening point is above 80°C, and the viscosity at 60°C is greater than 2.0×10 4 Pa.s.

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Abstract

The invention discloses high-viscosity asphalt and a preparation method thereof. The preparation method comprises the following steps: fusing and mixing asphalt raw materials, a tackifier and rubber powder so as to obtain the high-viscosity asphalt. The asphalt raw materials include matrix asphalt and an asphalt reclamation material; the rubber powder is one or more selected from reclaimed old tire rubber power, styrene-butadiene segmented copolymer rubber powder, styrene-acrylonitrile-butadiene grafted copolymer rubber powder; the tackifier is a polymerization product of aromatic vinyl copolymer and active monomers. The method is not only applicable to new raw materials, but also applicable to reclaimed materials, such as reclaimed asphalt and reclaimed tires, wastes are turned into things of value, environmental pollution is reduced, energy resources are saved, and the problem that the performances of products prepared by using reclaimed materials in the prior art are degraded is overcome. The prepared asphalt is high in viscosity, and good in thermal stability and ageing resistance, and is capable of realizing recycling, so that the method is environmentally friendly.

Description

technical field [0001] The invention relates to an asphalt material, in particular to a high-viscosity asphalt and a preparation method thereof. Background technique [0002] With the construction of a large number of high-grade highways, the speed of vehicles has increased significantly, and the safety and environmental performance of roads have attracted widespread attention. In recent years, a new type of environmentally friendly pavement, that is, drainage asphalt pavement, has gradually emerged. Drainage asphalt pavement refers to the porous asphalt concrete surface layer that can form drainage channels inside the mixture. Rainwater can seep into the pavement and be drained from the connected gaps in the pavement to the edge of the pavement, so that there is no thick road on the road surface in rainy days. At the same time, this kind of porous pavement also has the functions of reducing noise, anti-glare and regulating the temperature of the road surface in hot summer, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L51/00
CPCC08L95/00C08L2201/08C08L2205/025C08L2205/03C08L2205/035C08L2207/22C08L53/02C08L51/003C08L51/006
Inventor 涂淑光
Owner 涂淑光
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