Flame-retardant modified asphalt and preparation method thereof

A technology of modified asphalt and basic asphalt, which is applied in the direction of building components, building insulation materials, buildings, etc., can solve the problems of large amount of smoke generated by asphalt combustion, high toxicity of flame retardants, and high construction requirements, and achieve low production costs and high production efficiency. Environmentally friendly, pollution-free, and highly reusable

Inactive Publication Date: 2013-04-03
TIANJIN MUNICIPAL ENG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve technical problems such as high toxicity of flame-retardant asphalt flame retardants for road use, large amount of smoke generated by asphalt combustion, high cost, and high construction requirements. It provides a flame-retardant modified asphalt and a preparation method thereof, which can improve The flame retardant performance of road asphalt, taking into account its road performance and smoke suppression performance, is of great significance to the application and promotion of flame retardant modified asphalt at home and abroad

Method used

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  • Flame-retardant modified asphalt and preparation method thereof
  • Flame-retardant modified asphalt and preparation method thereof
  • Flame-retardant modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Take by weight: 100 parts of SBS modified asphalt; 2 parts of dry vermiculite powder; 5 parts of aluminum hydroxide;

[0044] (1) Stir the weighed vermiculite powder and aluminum hydroxide into a homogeneous mixture;

[0045] (2) Take 100 parts by weight of SBS modified asphalt and heat it to 120°C~125°C and keep it in a molten state;

[0046] (3) Add the mixture obtained in step (1) to the molten SBS modified asphalt obtained in step (2), and stir evenly with a stirrer;

[0047] (4) heating the mixture obtained in step (3) to 150°C~155°C;

[0048] (5) Use a high-speed shearing machine to cut at a speed of 1000r / min for 5-8 minutes;

[0049] (6) Increase the speed, and use a high-speed shearing machine to cut for 30 to 35 minutes at a speed of 4000r / min;

[0050] (7) Stir manually for 5-10 minutes to eliminate air bubbles generated by high-speed shearing, and store in jars for heat preservation until use.

Embodiment 2

[0052] Take by weight: 100 parts of SBS modified asphalt; 4 parts of dry vermiculite powder; 10 parts of aluminum hydroxide; 1 part of silane coupling agent; 1 part of zinc borate;

[0053] (1) Stir the weighed vermiculite powder, aluminum hydroxide and zinc borate into a uniform mixture;

[0054] (2) According to the mass concentration of 20%, dilute the weighed silane coupling agent with ethanol;

[0055] (3) Soak the flame retardant material mixture obtained in step (1) in the silane coupling agent diluent in step (2) for 1 hour at room temperature, and stir slightly evenly;

[0056] (4) Dry the miscible product obtained in step (3) in a desiccator at a temperature of 60°C to 65°C for 3 hours, and after the ethanol is completely evaporated, cool it to room temperature in a desiccator for later use;

[0057] (5) Heat the weighed SBS modified asphalt to 125°C~130°C and keep it in a molten state;

[0058] (6) Add the mixture obtained in step (4) to the molten SBS modified as...

Embodiment 3

[0064] Take by weight: 100 parts of SBS modified asphalt; 5 parts of dry vermiculite powder; 15 parts of aluminum hydroxide; 3 parts of silane coupling agent; 3 parts of zinc borate;

[0065] (1) Stir the weighed vermiculite powder, aluminum hydroxide and zinc borate into a uniform mixture;

[0066] (2) According to the mass concentration of 22%, dilute the weighed silane coupling agent with ethanol;

[0067] (3) Soak the flame retardant material mixture obtained in step (1) in the silane coupling agent diluent in step (2) for 1 hour at room temperature, and stir slightly evenly;

[0068] (4) Dry the miscible product obtained in step (3) in a desiccator at a temperature of 60°C~65°C for 3.5 hours, until the ethanol is completely volatilized, then cool it to room temperature in a desiccator for later use;

[0069] (5) Heat the weighed SBS modified asphalt to 130°C~135°C and keep it in a molten state;

[0070] (6) Add the mixture obtained in step (4) to the molten SBS modified...

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Abstract

The invention discloses flame-retardant modified asphalt and a preparation method thereof. The flame-retardant modified asphalt comprises the following components in parts by weight: 100 parts of base asphalt, 2-10 parts of vermiculite powder, 5-20 parts of aluminium hydroxide and / or magnesium hydrate, 0-5 parts of antismoke agent and 0-5 parts of coupling agent. The preparation method comprises the following steps of: mixing the vermiculite powder, the aluminium hydroxide and / or magnesium hydrate and the antismoke agent; diluting the coupling agent by using alcohol; soaking the flame-retardant mixture in a coupling agent diluent at a normal temperature and stirring; drying till the alcohol completely volatilizes, and then cooling; heating the base asphalt to a molten state, adding the flame-retardant mixture treated by the coupling agent, and uniformly stirring; and continuously heating, and shearing by a high-speed shear apparatus twice, and finally stirring and defoaming. The flame-retardant property of the road asphalt prepared by the preparation method can be increased, and the road asphalt has the pavement performance, smoke suppression performance, good stability and higher repeating utilization factor, and is non-toxic and non-corrosive; and the preparation method has the advantages of lower production cost, environment-friendly and pollution-free production, simple preparation technology, wide application and suitability for popularization.

Description

technical field [0001] The invention relates to an asphalt material composition and a preparation method thereof, in particular to a flame-retardant modified asphalt for road use and a preparation method thereof. Background technique [0002] Due to the advantages of shock absorption, anti-skid, low noise, early opening to traffic, and easy repair, asphalt pavement is more and more used in tunnel pavement. Due to poor ventilation in the tunnel, high traffic density, and flammable asphalt, once a traffic accident occurs in the tunnel and a fire occurs, it will cause heavy casualties and property losses. Burning asphalt will produce a lot of smoke, and with the release of toxic substances, it will definitely cause environmental pollution. Therefore, in order to ensure the safety of tunnel use, the flame retardant performance of tunnel asphalt is even more important. [0003] The flame retardants commonly used in existing tunnel pavement asphalt are halogen-based flame retard...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L23/06C08K9/06C08K9/04C08K3/34C08K3/22C08K3/38C08K3/36
Inventor 贺海周骊巍王晓华王新岐王朝辉黄思勇隋洪瑞高志伟李蕊白子建蒋宏伟曾伟张占领李明剑狄升贯
Owner TIANJIN MUNICIPAL ENG DESIGN & RES INST
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