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Waste rubber solid modified asphalt and preparation method thereof

A technology for modifying asphalt and waste rubber, applied in building components, building insulation materials, buildings, etc., can solve the problems of limited transportation distance and low melting temperature of SBS modified asphalt, and achieve good adhesion performance and low melting temperature. , the effect of viscosity increase

Inactive Publication Date: 2015-06-24
WUHU WANQIANLI NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The primary purpose of the present invention is to provide a waste rubber solid-modified asphalt and its preparation method with simple process, low price, and convenient storage and transportation for the above-mentioned problems in the prior art. The waste rubber solid-modified asphalt of the present invention has a low melting temperature. , not easy to age, good adhesion performance and low temperature crack resistance, can be transported by ordinary tank trucks, breaking through the limitation of traditional SBS modified asphalt transportation distance

Method used

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  • Waste rubber solid modified asphalt and preparation method thereof
  • Waste rubber solid modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Prepare materials according to the following proportions by weight:

[0039] Base asphalt (No. 90 road asphalt): 89.5 parts

[0040] Waste rubber powder (60 mesh): 10.0 parts

[0041] Activator DTDM (4,4'-dithiodimorpholine): 0.20 parts

[0042] Plasticizer (rosin cracked oil): 0.20 parts

[0043] Antioxidant 1010 (tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester): 0.10 parts

[0044] 2. Preparation of waste rubber solid modified asphalt

[0045] Put all the above base asphalt in the raw material tank, heat it to 150°C and melt it, and then pump it to the reactor that can be heated and kept warm; slowly put all the above waste rubber powder, activator, and plasticizer into the reactor And anti-oxidant, stir, make base asphalt and waste rubber powder, activator, plasticizer, antioxidant fully mix homogeneously, make mixture, wherein the weight ratio of base asphalt and waste rubber powder is 59.5: 10; The proportioning by weight of...

Embodiment 2

[0051] 1. Prepare materials according to the following proportions by weight:

[0052] Base asphalt (No. 90 road asphalt): 84.07 parts

[0053] Waste rubber powder (30 mesh): 15.0 parts

[0054] Activator DCP (dicumyl peroxide): 0.30 parts

[0055] Plasticizer (tall oil) 0.45 parts

[0056] Antioxidant 168 (tris(2,4-di-tert-butylphenyl) phosphate): 0.18 parts

[0057] 2. Preparation of waste rubber solid modified asphalt

[0058] Put all the above base asphalt in the raw material tank, heat it to 160°C and melt it, then pump it to the reactor that can be heated and kept warm; slowly put all the above waste rubber powder, activator and plasticizer into the reactor And anti-oxidant, stir, make matrix asphalt and waste rubber powder, activator, plasticizer, antioxidant fully mix homogeneously, make mixture, wherein the weight ratio of matrix asphalt and waste rubber powder is 84.07: 15; The proportioning by weight of above-mentioned activator, plasticizer, antioxidant and wa...

Embodiment 3

[0064] 1. Prepare materials according to the following proportions by weight:

[0065] Base asphalt (No. 90 road asphalt): 79.34 parts

[0066] Waste rubber powder (90 mesh): 20.0 parts

[0067] Activator TMTD (tetramethylthiuram disulfide) 0.30 parts

[0068] Plasticizer (furfural extract oil) 0.20 parts

[0069] Antioxidant 1076 (3-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate): 0.16 parts

[0070] 2. Preparation of waste rubber solid modified asphalt

[0071] Put all the above base asphalt in the raw material tank, heat it to 155°C and melt it, and then pump it to the reactor that can be heated and kept warm; slowly put all the above waste rubber powder, activator, and plasticizer into the reactor And anti-oxidant, stir, make base asphalt and waste rubber powder, activator, plasticizer, antioxidant fully mix uniformly, make mixture, wherein the weight ratio of base asphalt and waste rubber powder is 79.34: 20; The proportioning by weight of said activator,...

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Abstract

The invention discloses waste rubber solid modified asphalt and a preparation method thereof. The waste rubber solid modified asphalt comprises matrix asphalt, waste rubber powder, activator, plasticizer and antioxidant. The preparation method comprises the following steps: heating to melt the matrix asphalt, and sequentially adding the waste rubber powder, the activator, the plasticizer and the antioxidant; uniformly stirring to obtain an asphalt mixture; and sequentially performing high-speed shearing, development, encapsulation and cooling treatment on the asphalt mixture to obtain the waste rubber solid modified asphalt. The waste rubber solid modified asphalt disclosed by the invention is simple in preparation process, low in price and convenient to store and transport; and the solid modified asphalt has low melting temperature, low aging possibility and favorable adhesion property and low-temperature crack resistance, and can be transported by a common tanker, thereby breaking through the defect of limited transportation range of the traditional SBS (styrene-butadiene-styrene) modified asphalt.

Description

technical field [0001] The invention relates to a modified asphalt and a preparation method thereof, in particular to a waste rubber solid modified asphalt and a preparation method thereof. Background technique [0002] Since the reform and opening up, my country's economic development has achieved world-renowned achievements. With the development of the automobile industry, the output of waste rubber has increased sharply in recent years. By 2005, the scrapped tires in my country had reached more than 100 million. Adding hoses, tapes, rubber shoes and other rubber products, more than 2 million tons of waste rubber are produced every year. At present, the recycling and comprehensive utilization of waste rubber is mainly incineration to generate heat and produce recycled rubber. Incineration and heat treatment of waste rubber will cause secondary pollution to the air, while the quality of reclaimed rubber produced from waste rubber is poor, and the production process has high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L21/00C08K5/375C08K5/46C08K5/14C08K5/40C08K5/3415C08K5/39C08K5/47C08K5/134C08K5/526C08K5/138C08K5/13C08K5/524
Inventor 梁清源
Owner WUHU WANQIANLI NEW MATERIAL TECH CO LTD