High viscosity bitumen and preparation method thereof

A high-viscosity asphalt, road asphalt technology, applied in building components, building insulation materials, construction and other directions, to improve fluidity, improve dispersion performance and water damage resistance, and reduce equipment investment.

Active Publication Date: 2009-09-23
重庆市智翔铺道技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There is no report on the solution that can not only solve the dispersibility, but also solve the high-temperature stability and satisfy the performance of high-viscosity asphalt

Method used

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  • High viscosity bitumen and preparation method thereof
  • High viscosity bitumen and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 1000kg of dehydrated Zhonghai 70# asphalt into the heat-insulating jacketed stirring tank with heating device, heat to 140°C, add 20kg of compatibilizer high aromatic oil; continue to heat to 170°C, add 70kg of thermoplastic rubber SBS, 20kg of thermoplastic resin low-density polyethylene, 150kg of viscosity modifier terpene resin, 10kg of comprehensive antioxidant, the comprehensive antioxidant is physically blended by 5kg of ultraviolet absorber, 2.5kg of antioxidant 1010, and 2.5kg of aniline rubber antioxidant. Stir for 2 hours, then cut for 20 minutes with a high-speed shear at a speed of 14,000 r / min, and the product is ready. Sampling and detection according to the prescribed method, the results are shown in Table 1.

[0018] Table 1 Performance indicators of high-viscosity asphalt

[0019]

[0020] As shown in Table 1, the performance of the high-viscosity asphalt produced according to the formula of Example 1 of the present invention fully meets the req...

Embodiment 2

[0022] Add 1000kg of dehydrated Korean SK-70# asphalt into an insulating jacketed stirring tank with a heating device, heat to 140°C, add 10kg of compatibilizer furfural oil according to the weight ratio while stirring, and continue heating to 170°C, respectively, according to the weight ratio Add 70kg thermoplastic rubber SIS, 15kg thermoplastic resin ethylene-vinyl acetate copolymer, 120kg viscosity regulator C 9 Petroleum resin, 10kg comprehensive anti-aging agent, comprehensive anti-aging agent is formed by physical blending of 5kg ultraviolet absorber, 2.5kg antioxidant 1010, and 2.5kg aniline rubber anti-aging agent, stirring for 2h; Machine, cut for 20 minutes, ready-made product. Sampling and detection according to the prescribed method, the results are shown in Table 2.

[0023] Table 2 Performance indicators of high-viscosity asphalt

[0024]

[0025] As shown in Table 2, the performance of the high-viscosity asphalt produced according to the formula of Example ...

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Abstract

The invention relates to high viscosity bitumen and a preparation method thereof, and relates to the modified bitumen technology. The disclosed art is as follows: The bitumen consists of 100 portions of No.70 bitumen, 4 to 12 portions of thermal-plastic rubber, 2 to 80 portions of thermal-plastic resin, 1 to 10 portions of compatiblizing agent, 8 to 40 portions of viscosity regulator, and 0.5 to 4 portions of comprehensive anti-ageing agent. The preparation method comprises the following steps: metering the dehydrated No.70 road bitumen according to the weight ratio, adding the bitumen into a thermal insulated jacket stirring reaction kettle with a heating device, heating the bitumen to 140 DEG C, stirring the bitumen while adding the compatiblizing agent according to the weight ratio, continuing to raise the temperature to between 165 and 175 DEG C, adding the correctly metered thermal-plastic rubber, thermal-plastic resin, tackifier and comprehensive anti-ageing agent according to the weight ratio in order, keeping the temperature between 165 and 175 DEG C, stirring the mixture for 0.5 to 3 hours, carrying out high-velocity shearing through a high-velocity shearing machine for 5 to 40 minutes, setting the rotating speed to between 8,000 and 28,000 r/min, and obtaining the finished product. A common jacket heating stirring tank is adopted for stirring and the high-velocity shearing machine is adopted for shearing to prepare the high viscosity bitumen. The method has a simple process, low equipment investment, and convenient production.

Description

technical field [0001] The invention relates to a modified asphalt technology, in particular to a composition of high-viscosity asphalt and a preparation method thereof. Background technique [0002] High-viscosity asphalt refers to modified asphalt with a viscosity greater than 20,000 Pa.s at 60°C, which is suitable for paving heavy traffic roads and drainage roads. High-viscosity asphalt is currently mainly prepared by adding high-molecular polymers to petroleum asphalt. Adding high-molecular polymers to modify petroleum asphalt can significantly improve the high- and low-temperature performance of asphalt, and improve the high-temperature anti-rutting and low-temperature anti-cracking capabilities of asphalt pavement. However, due to the differences in molecular weight, density, and viscosity between most polymers and asphalt, it is difficult to disperse polymer-modified asphalt; at the same time, because most polymers are not completely compatible with asphalt, resultin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08K5/00C08K5/10C08K5/134C08K5/18C08K5/132B29B7/28C08L53/02C08L23/04
Inventor 盛兴跃伍朝晖张锋徐光红文海
Owner 重庆市智翔铺道技术工程有限公司
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