Method for preparing asphalt modifier for various temperature conditions by using waste rubber oil and method for preparing modified asphalt

A technology of asphalt modifier and temperature conditions, which is applied in recycling technology, building components, building insulation materials, etc., can solve problems such as asphalt difficulty, achieve the effects of improving performance, improving high temperature stability, and reducing material costs

Active Publication Date: 2016-10-05
遂宁天孜路新材料技术有限公司
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Problems solved by technology

Therefore, ordinary asphalt is difficult to meet this requirement

Method used

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  • Method for preparing asphalt modifier for various temperature conditions by using waste rubber oil and method for preparing modified asphalt
  • Method for preparing asphalt modifier for various temperature conditions by using waste rubber oil and method for preparing modified asphalt
  • Method for preparing asphalt modifier for various temperature conditions by using waste rubber oil and method for preparing modified asphalt

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Embodiment Construction

[0020] The present invention will be further described below with the help of examples. However, the scope of protection claimed by the present invention is not limited to the scope expressed in the examples.

[0021] A kind of method utilizing waste rubber oil to prepare asphalt modifier under various temperature conditions, the technical solution adopted is to include the following production steps,

[0022] Step 1, based on the weight of waste rubber powder, 40-65 parts by weight of waste rubber powder is screened and sent to the pre-degradation kettle, and then 1-2 parts by weight of RV catalyst and 15-20 parts by weight of furfural oil are added, and the mixture is evenly stirred. At 70-14°C, after 20-45min pre-degradation;

[0023] Step 2: In terms of waste rubber powder weight parts, 10-15 parts by weight of base asphalt, 1-3 parts by weight of anti-aging agent, 5-20 parts by weight of molecular weight modifier and the pre-degraded material prepared in step 1 are put i...

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Abstract

The invention relates to a method for preparing an asphalt modifier for various temperature conditions by using waste rubber oil. The method comprises the following steps: 1, screening waste rubber powder, then putting the screened waste rubber powder into a pre-degradation kettle, then adding an RV catalyst and furfural extract oil, blending the materials uniformly, and performing pre-degradation for 20-45min at a temperature of 70-14 DEG C for later use; 2, putting base asphalt, an anti-aging agent, a molecular weight regulator and a pre-degraded material prepared in the step 1 into a degradation / esterification kettle, performing degradation at a temperature of 240-330 DEG C, and cooling the materials to 200 DEG C, and then adding a reinforcing agent to generate reticular resin; and 3, after completion of esterification synthesis, additionally adding the molecular weight regulator into the degradation / esterification kettle, when the materials is cooled to a temperature of 130 DEG C or lower, then adding waste rubber pyrolysis oil, a tackifier and a deodorant, performing a reaction for 30-60min at a temperature of 80-100 DEG C while stirring, and then delivering the obtained materials into a colloid mill to perform fine milling and combination, thereby forming a liquid product. The method provided by the invention has the advantages that by using the waste rubber powder for modifying asphalt, the performance of the asphalt can be improved, the cost of materials can be reduced, and the recycling utilization ratio can be increased.

Description

technical field [0001] The invention relates to a method for preparing various temperature condition asphalt modifiers and modified asphalt by using waste rubber oil. Background technique [0002] As we all know, due to the development of modern highway traffic in terms of large-scale vehicles and channelization in recent years, pavement materials are facing severe tests, and the resulting road surface rutting, cracking, peeling, and insufficient skid resistance are becoming more and more serious. How to improve the performance of asphalt pavement to meet the needs of traffic development is an important issue faced by road workers all over the world. Most of the asphalt in my country belongs to the waxy W-grade asphalt, which has poor bonding performance, poor temperature sensitivity, thermal stability and low temperature crack resistance. It is easy to soften into fluid at high temperature, and easy to harden and become brittle into solid at low temperature. . The road asp...

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Application Information

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IPC IPC(8): C08J11/18C08L21/00C08L95/00
CPCY02A30/30Y02W30/62
Inventor 吕刚冯海波
Owner 遂宁天孜路新材料技术有限公司
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