Activated waste rubber powder and preparation method thereof as well as modified asphalt and preparation method thereof

A technology of waste rubber powder and modified asphalt, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of time-consuming industrial production, complicated process, difficult operation, etc., and achieves convenient operation, simple process, good phase capacitive effect

Inactive Publication Date: 2010-09-01
RES INST OF HIGHWAY MIN OF COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] Although the above methods solve the problems of blending compatibility and dispersibility of waste rubber powder and asphalt, there are often some problems, such as complicated process, difficult operation, time-consuming industrial production, and high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] The preparation method of the activated waste rubber powder of the present invention comprises: kneading a mixture containing waste rubber powder, a softener and / or a rubber activator at a temperature of 50-100° C. for 10-20 minutes to obtain activated waste rubber powder. The mixing can be carried out in a rubber mixing machine, which can be various equipment known to those skilled in the art that can be used for mixing, for example, it can be open, closed, or it can be a screw rubber mixing machine.

[0035] The waste rubber powder modified asphalt of the present invention is made from a mixture containing matrix asphalt and activated waste rubber powder, and the activated waste rubber powder is the activated waste rubber powder provided by the present invention. Moreover, the content of the base asphalt is 75-92% by weight, and the content of the activated waste rubber powder is 8-25% by weight.

[0036] In the waste rubber powder modified asphalt of the present inv...

Embodiment 1-9

[0047] 1. Preparation of activated waste rubber powder

[0048] The activated waste rubber powder of embodiment 1-12 is prepared by the components listed in table 1 and the consumption thereof, and each component is added in the rubber mixing machine (Shanghai rubber machinery factory, SK-1608), and in table 1 Mixing is carried out under the listed mixing temperature and mixing time to obtain activated waste rubber powder.

[0049] Table 1

[0050]

waste rubber powder

(parts by mass)

softener

(parts by mass)

rubber activator

(parts by mass)

Mixing temperature

(℃)

Mixing time

(minute)

Example 1

80 mesh

100 copies

naphthenic oil

3.5 servings

-

50

20

Example 2

80 mesh

100 copies

-

De-link

1 copy

100

10

Example 3

80 mesh

100 copies

naphthenic oil

3.6 servings ...

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PUM

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Abstract

The invention relates to activated waste rubber powder and a preparation method thereof. The activated waste rubber powder is prepared from a mixture containing waste rubber powder, a softener and/or a rubber activating agent. The invention also relates to a waste rubber powder modified asphalt and a preparation method thereof. The waste rubber powder modified asphalt is prepared from a mixture containing base asphalt and the activated waste rubber powder. The activated waste rubber powder and the base asphalt have favorable compatibility, and the modified asphalt containing the activated waste rubber powder can have favorable storage stability, high temperature property and ageing-resistant performance and lower cost. In addition, the preparation methods of the activated waste rubber powder and the modified asphalt are simple in process and convenient to operate.

Description

technical field [0001] The invention relates to an activated waste rubber powder, a preparation method of the activated waste rubber powder, a modified asphalt containing the activated waste rubber powder and a preparation method thereof. Background technique [0002] In recent years, the rapid development of the national economy has driven the vigorous development of China's road transportation industry and the continuous increase of the average load of road vehicles. In order to meet the needs of the market economy for the transportation industry, the construction mileage of expressways continues to grow rapidly every year. Nearly 10 years into the new century, the western development strategy has put forward more urgent requirements for the road industry, and there is an urgent need for high-performance pavement materials that can adapt to the high cold and high temperature difference between day and night in the west. [0003] However, ordinary asphalt pavement is highl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00C08K5/01C08K5/39C08K5/47C08K5/375C08L95/00
Inventor 曹东伟张海燕唐国奇范勇军刘清泉
Owner RES INST OF HIGHWAY MIN OF COMM
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