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Waste rubber powder composite modified asphalt and preparation method thereof

A technology for composite modified asphalt and waste rubber powder, which is applied to building components, building insulation materials, buildings, etc., can solve the problems of insufficient bonding strength between rubber powder particles and asphalt, unsuitable static storage, poor storage stability, etc., and achieve reduction of asphalt Consumption, emission reduction, good quality effect

Inactive Publication Date: 2019-02-15
湖北津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

[0004] However, waste rubber powder is an inert material, and there are few available groups on the surface of the rubber powder. Under the action of high temperature and long-term shearing with asphalt, there are the following deficiencies: 1. The bonding strength between rubber powder particles and asphalt is not enough. The rubber powder particles in the road built are easy to peel off from the asphalt, the road quality is poor, and the service life is short; 2. The storage stability is very poor, so it is not suitable for static storage

Method used

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  • Waste rubber powder composite modified asphalt and preparation method thereof
  • Waste rubber powder composite modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of waste rubber powder composite modified asphalt is prepared through the following steps:

[0035] S1. Weigh the following materials by weight: 10 parts of 10-30 mesh waste bias tire rubber powder, 0.6 part of pentaerythritol tetramercaptoacetate, 0.5 part of SBS modifier, 60 parts of 70#A grade road petroleum asphalt, slow cracking 1 part of slow-setting cationic asphalt emulsifier BH-MM, 3 parts of rosin glyceride;

[0036] S2. Completely immerse the waste bias tire rubber powder in water, add potassium ferrate with 1% of the total weight of water, and keep stirring and soaking at a speed of 20 rpm at 30°C for 1 hour, then grind the obtained 30-80% under wet conditions. Particulate matter of interest;

[0037]S3, melt 70#A grade road petroleum asphalt under the condition of 140-150°C, add SBS modifier, after heating up to 170-190°C, add rosin glyceride which is preheated into liquid state, stir well, add step The granular material obtained in S2 is stirred a...

Embodiment 2

[0039] A kind of waste rubber powder composite modified asphalt is prepared through the following steps:

[0040] S1. Weigh the following materials by weight: 10 parts of 10-30 mesh waste bias tire rubber powder, 0.6 part of pentaerythritol tetramercaptoacetate, 60 parts of 70#A grade road petroleum asphalt, and 1 part of lignoamine cationic asphalt emulsifier , 3 parts of rosin glyceride;

[0041] S2. Completely immerse the waste bias tire rubber powder in water, add potassium ferrate with 1% of the total weight of water, and keep stirring and soaking at a speed of 20 rpm at 30°C for 1 hour, then grind the obtained 30-80% under wet conditions. Particulate matter of interest;

[0042] S3. Melt 70#A grade road petroleum asphalt at 140-150°C, add SBS modifier, heat up to 170-190°C, add preheated rosin glyceride, stir well, add pentaerythritol Stir tetramercaptoacetate and the granular substance prepared in step S2 for 1 hour at 180-190° C. to prepare waste rubber powder compos...

Embodiment 3

[0044] A kind of waste rubber powder composite modified asphalt is prepared through the following steps:

[0045] S1, take the following materials by weight: 30 parts of 10-30 mesh waste radial tire rubber powder, 0.6 part of pentaerythritol tetramercapto butyrate, 90 parts of 70#A grade road petroleum asphalt, 0.6 part of lignoamine cationic asphalt emulsifier, 5 parts of isobutyl stearate;

[0046] S2. Completely immerse the waste radial tire rubber powder in water, add potassium ferrate of 1% of the total weight of water, and keep stirring and soaking at a speed of 30rpm at 25°C for 0.5h, then grind the obtained 30-80% under wet conditions. Particulate matter of interest;

[0047] S3. Melt 70#A grade road petroleum asphalt at 140-150°C, add SBS modifier, heat up to 170-190°C, add isobutyl stearate preheated to liquid state, and stir well , adding pentaerythritol tetramercaptobutyrate and the granular substance prepared in step S2, stirring at 180-190° C. for 2 hours to pr...

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Abstract

The invention belongs to the technical field of modified asphalt and particularly relates to waste rubber powder composite modified asphalt and a preparation method thereof. The waste rubber powder composite modified asphalt is prepared from raw materials in parts by weight as follows: 10-30 parts of modified rubber powder, 0.3-0.6 parts of a plasticizer, 0.5-2 parts of an SBS modifier, 60-90 parts of base asphalt and 2-5 parts of an aging resister, wherein the modified rubber powder is prepared with the following method: waste tire rubber powder is completely soaked in water, potassium ferrate accounting for 1%-2% of total weight of water is added, the waste tire rubber powder is continuously stirred and soaked at the temperature of 20-30 DEG C and the rate of 20-30 rpm for 0.5-1 h and ground under wet condition, the obtained 30-80mesh granular materials are the modified rubber powder, the modified rubber powder has good binding capacity with asphalt, rubber powder granules are not prone to separation from the modified rubber powder asphalt, the asphalt has excellent high-temperature softening resistance and low-temperature cracking resistance, service life of a road can be prolonged effectively, and the paved road has higher quality.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt, in particular to waste rubber powder composite modified asphalt and a preparation method thereof. Background technique [0002] With the improvement of road construction level and the increasing traffic volume, higher requirements are put forward for the road surface function. The modification of asphalt by polymer or rubber has become an effective way and development to improve the performance of road petroleum asphalt. direction. [0003] Waste tires contain various polymers such as styrene-butadiene rubber and natural rubber, as well as a large amount of carbon black, antioxidants, fillers, treatment oil, etc. Therefore, waste rubber can be added to asphalt after granulation, and the product obtained by mixing , called rubber asphalt. The rubber powder swells in the asphalt, which increases the adhesion of the asphalt and makes the oil film thicker. The overall performance of the ru...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L19/00C08L53/02C08L93/04C08K5/37C08K5/42
CPCC08L95/00C08L2205/035C08L2207/24C08L19/003C08L53/02C08L93/04C08K5/37C08K5/42
Inventor 宗博肖洪涛冯久胜宗明亚
Owner 湖北津泰环保科技有限公司
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