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Waste rubber powder activated and modified epoxy asphalt functional material and preparation method thereof

A technology of waste rubber powder and epoxy asphalt, which is applied in chemically processing tar asphalt/petroleum asphalt/natural asphalt, building insulation materials, building components, etc. It can solve the problem of poor storage stability of waste rubber powder modified asphalt, It does not achieve the problems of stabilizing the chemical colloidal structure and increasing the crushing cost of waste rubber powder, but achieves the effects of improving low-temperature crack resistance, reducing raw material costs, and improving stability

Active Publication Date: 2015-05-06
JURONG NINGWU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The waste tire rubber powder is directly added to the base asphalt, and the physical processes such as stirring and shearing are carried out at high temperature, so that the waste rubber powder is dispersed in the base asphalt to form a waste rubber powder modified asphalt product. This process technology produces The storage stability of waste rubber powder modified asphalt is very poor, so it is not suitable for static storage
(2) The production of waste rubber modified asphalt by existing technology requires the particle size of waste rubber powder to be very small, preferably fine rubber powder, thus increasing the cost of crushing waste rubber powder
(3) In the waste rubber powder modified asphalt system, the rubber powder particles and the base asphalt are only physically mixed, and a stable chemical colloidal structure has not been achieved. Therefore, the waste rubber powder particles often peel off when paved on the road, thus affecting the quality of the road surface. quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A preparation method of waste rubber powder activated modified epoxy asphalt functional material:

[0024] (1) Add 20 grams of waste rubber powder, 30 grams of water, 0.1 grams of catalyst and 1 gram of oxidizing agent into the reactor, heat up and stir to 50 o C, reacted for 16h. After cooling, filtering and removing the solvent, the waste rubber powder with certain surface activity is obtained.

[0025] (2) 10 grams of waste rubber powder obtained above are added to 100 grams of base asphalt, and 5 grams of polymer dispersant and 15 grams of anhydride curing agent are added simultaneously, and the temperature is raised to 120 o C. React for 10 h under shear emulsification to obtain component B of epoxy asphalt.

[0026] (3) Fully mix epoxy asphalt A component and B component at 150°C. The parts by weight of component A are as follows: 70 parts of epoxy resin; 20 parts of epoxy modified silicone oil; wherein the ratio of epoxy asphalt A component to B component is 1...

Embodiment 2

[0028] A preparation method of waste rubber powder activated modified epoxy asphalt functional material:

[0029] (1) Add 20 grams of waste rubber powder, 40 grams of water, 0.2 grams of catalyst and 1 gram of oxidizing agent into the reactor, heat up and stir to 60 o C, reacted for 12h. After cooling, filtering and removing the solvent, the waste rubber powder with certain surface activity is obtained.

[0030] (2) 20 grams of the waste rubber powder obtained above are added to 100 grams of base asphalt, and 8 grams of polymer dispersant and 20 grams of anhydride curing agent are added simultaneously, and the temperature is raised to 140 o C. React for 8 hours under the action of shear emulsification to obtain component B of epoxy asphalt.

[0031] (3) Fully mix epoxy asphalt A component and B component at 160°C. The parts by weight of component A are as follows: 80 parts of epoxy resin; 30 parts of end-group epoxy modified silicone oil; wherein the ratio of epoxy asphalt ...

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PUM

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Abstract

The invention discloses a waste rubber powder activated and modified epoxy asphalt functional material and a preparation method thereof. The functional material comprises an epoxy asphalt component A and an epoxy asphalt component B, wherein the epoxy asphalt component A is the mixture of epoxy resin and terminal-group epoxy modified silicone oil; the epoxy asphalt component B is a polymer dispersant, a matrix asphalt, a curing agent and a waste rubber powder activation product. The preparation method comprises the following steps: activating waste rubber powder to obtain activated waste rubber powder with surface activity; adding the obtained activated waste rubber powder into the matrix asphalt to obtain the epoxy asphalt component B, adequately mixing the epoxy asphalt component A with the epoxy asphalt component B to obtain the waste rubber powder activated and modified epoxy asphalt functional material. The preparation method disclosed by the invention can be used for comprehensively improving the compatibility between the matrix asphalt and the rubber powder, and improving the low-temperature crack resistance, fatigue resistance and stability of the epoxy asphalt functional material.

Description

technical field [0001] The invention relates to a modified epoxy asphalt functional material and its preparation, and relates to a toughening modification of an epoxy asphalt material through activated waste rubber powder. Specifically, it is a waste rubber powder activated modified epoxy asphalt functional material and a preparation method thereof. Background technique [0002] Compared with ordinary asphalt, the pavement paved with modified asphalt can significantly improve the resistance to permanent deformation, temperature shrinkage cracking and fatigue cracking. Modified asphalt refers to the asphalt binder made by adding modifiers such as resin, high molecular polymer, ground rubber powder or other materials to improve the performance of asphalt or asphalt mixture. For the modification of asphalt, domestic patents include: CN1364823, CN1415663A, CN103773035A, CN103665899A, etc. Because the modification process is the physical blending of asphalt and polymer, the fat...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L21/00C08L63/00C08L83/04C08J3/03C10C3/02
Inventor 倪良王赟王蕾蒋银花
Owner JURONG NINGWU CHEM
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