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Manufacturing method of polymer modified asphalt

A technology of modified asphalt and a manufacturing method, which is applied in building structures, chemical instruments and methods, building components, etc., can solve the problems of large investment in flue gas treatment equipment, high operating costs, secondary pollution, etc., and achieves superior high temperature performance. , High utilization rate, and the effect of improving flexibility

Active Publication Date: 2015-02-25
北京建都设计研究院有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional manufacturing method of modified asphalt is to heat the asphalt to 180-200°C by a heat exchanger, add it to the open jacket heating and stirring tank, and then put in the modified material SBS or APP, and the heat conduction oil furnace is constantly on The jacket in the mixing tank is heated by circulation, and the hot asphalt is used to melt the modified material SBS or APP, making it solid, softened, melted and evenly mixed. In order to speed up the melting of the polymer, a high-power grinder is installed outside the mixing tank. Circulation system, the polymer and asphalt are evenly mixed and then pumped to the static mixing tank, mixed with talcum powder and then pumped to the application point. In this method, the heating temperature of the asphalt in the open mixing tank is as high as 180-200 ° C, resulting in A large amount of flue gas needs to be smoked with a fume hood, and can only be discharged into the atmosphere after being treated by special equipment, and the flue gas contains benzopyrene, which is a strong carcinogen, and the flue gas treatment equipment requires a large investment, high operating costs, and energy consumption. high, causing secondary pollution

Method used

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  • Manufacturing method of polymer modified asphalt
  • Manufacturing method of polymer modified asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take 100kg of asphalt and heat it at 110-120°C, filter it through the filter 3 to remove iron, put it into the heat preservation storage tank 2, pass the asphalt screw meter 6 with electric heating function to adjust the temperature, enter the asphalt and polymer rendezvous device 8, and take 10kg of styrene- Put the butadiene-styrene block copolymer into the hopper 1, and heat it to 180°C through the plastic screw extruder 7, which is closed and heated in sections, to extrude the polymer and the above-mentioned extruded asphalt in the asphalt and polymer heat preservation joint 8 After mixing, enter the electric heating and temperature-adjusting homogenizing screw extruder 9 to extrude the mixed material at a temperature of 130 ° C, take 11 kg of talc powder and put it into the talc powder hopper 4 and heat it to 100 ° C and enter the polymerization through the heating talc powder screw meter 5 material, talcum powder rendezvous device 10, mixed with the homogenized mat...

Embodiment 2

[0029] Take 100kg of asphalt and heat it at 115°C, filter it through the filter 3 to remove iron, put it into the heat preservation storage tank 2, pass it through the asphalt screw meter 6 with electric heating function to adjust the temperature, enter the asphalt and polymer rendezvous device 8, and take 12kg of styrene-butadiene Put the ethylene-styrene block copolymer into the hopper 1, and heat it to 170°C through the plastic screw extruder 7, which is closed and heated in sections, to extrude the polymer and the above-mentioned extruded asphalt in the asphalt and polymer heat preservation combiner 8. Enter the electric heating and temperature-regulating homogenizing screw extruder 9 to extrude the mixed material at a temperature of 135 ° C, take 12 kg of talcum powder and put it into the talcum powder hopper 4 and heat it to 100 ° C. Enter the polymer through the heating talcum powder screw meter 5, Talc powder rendezvous 10, mixed with homogenized materials to obtain pol...

Embodiment 3

[0031] Take 100kg of asphalt and heat it at 120°C, filter it through the filter 3 to remove iron, put it into the insulation storage tank 2, and enter the asphalt and polymer combiner 8 through the screw meter 6 with electric heating function to adjust the temperature, and take 10kg of styrene-butadiene - Styrene block copolymers are put into the hopper 1, heated to 180°C by the segmented closed heated plastic screw extruder 7 to extrude the polymer and the above-mentioned extruded asphalt in the asphalt and polymer heat preservation combiner 8 and then enter Extrude with electric heating temperature-adjusting homogenizing screw extruder 9 to homogenize the mixture at a temperature of 140°C, take 13kg of talc powder and put it into the talc powder hopper 4 and heat it to 100°C and enter the polymer and talc through the heating talc powder screw meter 5 The powder rendezvous device 10 is mixed with the homogenized material to obtain a polymer modified asphalt product with a temp...

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Abstract

The invention discloses a manufacturing method of polymer modified asphalt, which is mainly characterized in that the polymer modified asphalt is obtained by heating asphalt and mixing the asphalt with polymer SBS and talc powder and then by homogenizing and extruding the mixture by a screw extruder, and that the polymer modified asphalt is pressurized and delivered to an application spot. The finished product of the modified asphalt of the invention can be used for waterproof roll or modified asphalt material for manufacturing asphalt concrete for road paving. The method of the invention avoids the generation of smoke, saves the heating and cooling energy, shortens the cooling time, reduces the length and height of production line, and is low in energy consumption and environmentally friendly.

Description

technical field [0001] The invention relates to a method for manufacturing polymer modified asphalt, which belongs to the field of building materials. Background technique [0002] The traditional manufacturing method of modified asphalt is to heat the asphalt to 180-200°C by a heat exchanger, add it to the open jacketed heating and stirring tank, and then put in the modified material SBS or APP, and the heat transfer oil furnace is constantly on The jacket in the mixing tank is heated by circulation, and the hot asphalt is used to melt the modified material SBS or APP, so that it can be solidified, softened and melted to melt and evenly mixed. In order to speed up the melting of the polymer, a high-power grinding machine is installed outside the mixing tank Circulation system, the polymer and asphalt are evenly mixed and then pumped to the static mixing tank, mixed with talcum powder and then pumped to the application point. In this method, the heating temperature of the as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L23/12C08K3/34B29C47/92E01C7/26E04D5/10E04B1/64B32B11/10B32B37/08C04B26/26B29C48/92
CPCB29C47/92B29C48/39B29C48/385B29C48/92B29C2948/92704B29C2948/92895
Inventor 安保良
Owner 北京建都设计研究院有限责任公司