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High-viscosity rubber asphalt and preparation method thereof

A rubberized asphalt, high-viscosity technology, applied in the field of rubberized asphalt, can solve the problems of high-viscosity rubberized asphalt that cannot be satisfied, application limitations, etc., and achieve the effects of large dynamic viscosity, improved cohesion, and stable asphalt products

Active Publication Date: 2021-02-05
北京路德永泰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The invention provides high-viscosity rubber asphalt and its preparation method to solve the problem that the high-viscosity rubber asphalt in the prior art cannot meet the special road surface with high viscosity requirements and its application is limited

Method used

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  • High-viscosity rubber asphalt and preparation method thereof
  • High-viscosity rubber asphalt and preparation method thereof
  • High-viscosity rubber asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] High-viscosity rubber asphalt, including 100 parts of asphalt, 5 parts of rubber powder, 3 parts of SBS, 1.5 parts of oxidized polyethylene wax, 0.1 part of the first crosslinking aid, 3 parts of aromatic oil and 0.3 part of the second crosslinking aid.

[0035] Among them, petroleum asphalt is used for asphalt, 40-120 mesh is used for rubber powder, and the first cross-linking aids are DCP dicumyl peroxide, DTBP di-tert-butyl peroxide, 2,5-dimethyl-2,5 di One of tert-butyl peroxide hexane (double 25); one of the second crosslinking aid sulfur, TMTD, DCP, M or D.

[0036] The preparation method of above-mentioned high-viscosity rubber asphalt comprises the following steps:

[0037] S1: Heating the aromatic oil to 135-160°C, adding SBS and oxidized polyethylene wax in a metered amount, keeping the temperature and stirring for 60-120min, and the stirring speed is 500-800rpm.

[0038] S2: Add the first cross-linking auxiliary agent to S1, heat-preserve and stir for 60-90 ...

Embodiment 2～13 and comparative example 1～3

[0044] The only difference from Example 1 is that the ratio of each component is different, and the specific composition ratio is shown in Table 1 below.

[0045] Table 1 is the composition ratio of Examples 1-13 and Comparative Examples 1-3

[0046] asphalt rubber powder SBS Oxidized polyethylene wax Aromatic oil first crosslinking agent Second Crosslinking Auxiliary Example 1 100 5 3 1.5 3 0.1 0.3 Example 2 100 10 3 1.5 3 0.1 0.3 Example 3 100 15 3 1.5 3 0.1 0.3 Example 4 100 10 2 1.5 3 0.1 0.3 Example 5 100 10 7 1.5 3 0.1 0.3 Example 6 100 10 3 0.5 3 0.1 0.3 Example 7 100 10 3 3 3 0.1 0.3 Example 8 100 10 3 1.5 1 0.1 0.3 Example 9 100 10 3 1.5 4 0.1 0.3 Example 10 100 10 3 1.5 3 0.04 0.3 Example 11 100 10 3 1.5 3 0.4 0.3 Example 12 100 10 3 1.5 3 0.4 0.2 Example 13 100 10 3 1.5 3 0.4 0.6 Compar...

Embodiment 14

[0048] The difference from Example 2 is that a special stirring device is used in the preparation method step S3, combined with figure 1 and figure 2As shown, the special mixing equipment includes a horizontally fixed mixing drum, the left end of the mixing drum is provided with an inlet, and the right end is provided with an outlet. The stirring drum is connected with a stirring shaft 10 in rotation, wherein the stirring shaft 10 is hollow, and the two sides of the stirring shaft 10 Both ends are connected to pipes through rotary joints, and a number of stirring blades 11 are fixed on the stirring shaft 10. The heating medium (gas, water, liquid metal, etc.) flows through the stirring shaft 10 through the pipes, thereby heating the stirring shaft 10 and the stirring blades 11. A driving mechanism for driving the stirring shaft 10 to rotate is also provided.

[0049] A connecting rod 12 is slidably connected in the stirring shaft 10, and the connecting rod 12 is arranged coa...

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Abstract

The invention relates to the technical field of rubber asphalt, and particularly discloses high-viscosity rubber asphalt and a preparation method thereof. The high-viscosity rubber asphalt is preparedfrom 100 parts of asphalt, 5 to 15 parts of rubber powder, 2 to 7 parts of SBS, 0.5 to 3 parts of oxidized polyethlene wax, 0.04 to 0.4 part of a first crosslinking aid, 1 to 4 parts of aromatic hydrocarbon oil and 0.2 to 0.6 part of a second crosslinking aid; the preparation method comprises the following steps: stirring aromatic hydrocarbon oil, SBS and oxidized polyethylene wax, adding the first crosslinking aid to obtain a polymer mother solution A, melting asphalt, adding the polymer mother solution A, stirring while keeping the temperature, adding rubber powder, carrying out high-speedshearing and grinding on the mixture, adding the second crosslinking aid, and stirring while keeping the temperature to obtain the high-viscosity rubber asphalt. The adhesive force (dynamic viscosityat 60 DEG C) between the rubber asphalt prepared by the scheme and aggregate can meet the requirements of special asphalt pavements, and the rubber asphalt has the advantages of better high temperature resistance, water damage resistance and the like.

Description

technical field [0001] The invention relates to the technical field of rubber asphalt, in particular to high-viscosity rubber asphalt and a preparation method thereof. Background technique [0002] In recent years, rubber asphalt has been widely used in road engineering. Rubber asphalt is first processed from waste tires into rubber powder, then combined according to a certain ratio of thickness and fineness, and at the same time adding a variety of high polymer modifiers, and fully swells and reacts with the base asphalt under high temperature conditions of sufficient mixing Finally, the modified rubber asphalt material is obtained by shearing and grinding; the high temperature stability, low temperature stability and elasticity of such rubber asphalt material are greatly improved compared with ordinary asphalt; at the same time, the reuse of waste tires is also It can save energy, protect the environment, and turn waste into wealth. [0003] Two important indicators of h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L23/30C08L21/00C08L91/00C08K5/14C08K3/06C08K5/40
CPCC08L95/00C08L2201/08C08L2205/035C08L2312/00C08L53/02C08L23/30C08L21/00C08L91/00C08K5/14C08K3/06C08K5/40
Inventor 董大伟江宽刘双旺董进学马庆杰颜亮武晋巍
Owner 北京路德永泰环保科技有限公司
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