A high-glue asphalt masterbatch and its low-temperature and environmentally friendly production process

A production process and asphalt technology, applied in the field of high-rubber asphalt masterbatch and its low-temperature environmental protection production process, can solve the problems of high temperature viscosity, coarse particles and high desulfurization cost of modified asphalt

Active Publication Date: 2021-04-16
JIANGSU BAOLI INT INVESTMENT CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The "high-adhesive asphalt masterbatch" described in the present invention aims to solve the problems of high shear temperature, strong odor, and substandard environmental emission indicators in the traditional production process of high-adhesive asphalt, and at the same time solve the problems in the field of high-viscosity composite modified asphalt. Generally, rubber powder is not desulfurized and degraded due to high desulfurization cost, and the particles are relatively coarse, which leads to easy sedimentation in asphalt, high-temperature viscosity of modified asphalt, and the problem of limiting the amount of SBS; and realize the environmental protection of the product in terms of technology and equipment , stable, high-performance and low-cost production

Method used

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  • A high-glue asphalt masterbatch and its low-temperature and environmentally friendly production process
  • A high-glue asphalt masterbatch and its low-temperature and environmentally friendly production process
  • A high-glue asphalt masterbatch and its low-temperature and environmentally friendly production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Mix 50 parts by mass of 30-mesh 900in tire vulcanized rubber powder and 10 parts by mass of furfural oil in a pre-development tank, and degrade and develop for 5 hours.

[0046] (2) Add 40 parts by mass of Ssangyong 70#A grade matrix asphalt purchased from S-Oil to the pre-development tank pump, and transport the pre-development tank material to the reactor through the screw pump, and pass the model SYJZM02-30 / 0.2 type The homogeneous colloid mill is used for shear blending for 2 hours, and then the mixture is sent to the decay tank for 3-5 days, and the target viscosity at 135°C is 1-2 Pa·s to obtain a high-glue asphalt masterbatch.

[0047] (3) 8 parts by mass of high-glue asphalt masterbatch and 9 parts by mass of star-shaped SBS (mass average molecular weight: 120,000) purchased from Yueyang Petrochemical were blended with 80 parts by mass of road petroleum asphalt through a colloid mill, and the temperature was kept at 160°C Until the SBS is completely swollen....

Embodiment 2

[0050] (1) Mix 10 parts by mass of 100-mesh 1000in tire vulcanized rubber powder and 10 parts by mass of aromatic oil in a pre-development tank, and degrade and develop for 3 hours.

[0051] (2) Add 80 parts by mass of Ssangyong 70#A grade matrix asphalt purchased from S-Oil to the pre-development tank pump, and transport the pre-development tank material to the reactor through the screw pump, and pass the model SYJZM02-30 / 0.2 type The homogeneous colloid mill is used for shear blending for 2 hours, and then the mixture is sent to the decay tank for 3-5 days, and the target viscosity at 135°C is 1-2 Pa·s to obtain a high-glue asphalt masterbatch.

[0052] (3) 32 parts by mass of high-glue asphalt masterbatch and 1 part by mass of star-shaped SBS (mass average molecular weight: 300,000) purchased from Yueyang Petrochemical were blended with 66.8 parts by mass of road petroleum asphalt through a colloid mill, and the temperature was kept at 190°C Until the SBS is completely swol...

Embodiment 3

[0055] (1) Mix 25 parts by mass of 80-mesh 1100in tire vulcanized rubber powder and 5 parts by mass of shale oil in a pre-development tank, and degrade and develop for 3 hours.

[0056] (2) Add 70 parts by mass of Ssangyong 70#A grade matrix asphalt purchased from S-Oil to the pre-development tank pump, and transport the pre-development tank material to the reactor through the screw pump, and pass the model SYJZM02-30 / 0.2 type The homogeneous colloid mill is sheared and blended for 1 hour, and then the mixture is sent to the decay tank for 3-5 days, and the target viscosity at 135°C is 1-2 Pa·s to obtain a high-glue asphalt masterbatch.

[0057] (3) 15 parts by mass of high-adhesive asphalt masterbatch and 5 parts by mass of star-shaped SBS (mass average molecular weight: 300,000) purchased from Yueyang Petrochemical were blended with 78.5 parts by mass of road petroleum asphalt through a colloid mill, and the temperature was kept at 190°C Until the SBS is completely swollen. ...

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Abstract

The invention relates to a high-glue asphalt masterbatch and its low-temperature environment-friendly production process. The raw materials include the following components and weight percentages: vulcanized rubber powder: 10-50; deconstructing agent: 5-15; base asphalt: 40-80; The above-mentioned high rubber asphalt masterbatch is a homogeneous blend obtained by first desulfurizing and degrading vulcanized rubber powder in a deconstructing agent, and then adding base asphalt and blending together. Utilizing the high-glue asphalt masterbatch of the present invention can effectively solve the problems of high odor and substandard emissions in the subsequent production of asphalt products; it can also avoid the conventional degradation of vulcanized rubber powder after long-term shearing at high temperatures above 200°C The performance of both asphalt and rubber powder is reduced due to the production method of obtaining modified asphalt from asphalt, which shortens the production cycle and saves costs, and the original cross-linked macromolecular network structure in vulcanized rubber powder becomes Smaller, forming a small amount of chains and increasing the sol content of the system, which is conducive to the material exchange between rubber powder and asphalt during subsequent processing, and improves compatibility and stability.

Description

technical field [0001] The invention relates to the field of asphalt material improvement, in particular to a high-glue asphalt masterbatch and a low-temperature environment-friendly production process thereof. Background technique [0002] With the rapid growth of modern traffic flow and the frequent occurrence of extreme climates, higher requirements are put forward for modified asphalt; especially high-grade pavements such as heavy-duty traffic pavement, steel bridge deck pavement and drainage asphalt pavement require the use of high-grade Performance modified bitumen. Among them, adding high content of SBS is an effective way to achieve high performance of modified asphalt, but high content of SBS modified asphalt has problems such as difficult stability, difficult processing and high cost. Rubber asphalt has excellent crack resistance and can reduce the black pollution of waste tires, but the process is complicated, the performance is unstable, and harmful gases will b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L91/00C08L19/00C08K3/14C08K3/06C08K3/04C08J3/22
CPCC08J3/22C08J11/18C08K3/04C08K3/06C08K3/14C08L17/00C08L19/00C08L53/02C08L91/00C08L95/00Y02W30/62
Inventor 徐思田周文彬周文婷王仕峰陶红朱亚琴陈加干
Owner JIANGSU BAOLI INT INVESTMENT CO LTD
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