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Composite modified asphalt and preparation method thereof

A composite modified asphalt, modified technology, applied in building components, building insulation materials, construction, etc., can solve the problems of poor compatibility between epoxy resin and asphalt materials, poor low-temperature bending performance, poor flexibility, etc., and achieve excellent low-temperature Flexibility, good high temperature and low temperature performance, and strong fatigue resistance

Active Publication Date: 2013-08-07
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

[0004] However, due to the high rigidity of traditional epoxy asphalt materials, there are certain problems in application, such as poor flexibility, poor low temperature bending performance; poor compatibility between epoxy resin and asphalt materials, easy delamination and other shortcomings. The application of steel bridge deck pavement has caused a large impact

Method used

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  • Composite modified asphalt and preparation method thereof
  • Composite modified asphalt and preparation method thereof
  • Composite modified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Add 40kg polyether diol (molecular weight 1000) into the reaction kettle, the temperature in the kettle is 100-130℃, vacuumize and dehydrate for 2-3 hours, then add 0.2kg triethylenediamine catalyst and 240kg bisphenol A epoxy resin (E51 ), the temperature is 100-150°C, after 1-2 hours of reaction, the temperature is lowered to 70-90°C, and then 110kg of toluene diisocyanate is added to react for 2-3 hours to obtain a polyurethane-modified epoxy resin; the polyurethane-modified epoxy resin and 70kg of naphthalene oil, 60kg of dioctyl phthalate (DOP), and 450kg of road petroleum asphalt (70#) were mixed and stirred evenly at a temperature of 120°C as component A; 70kg of modified aromatic amine curing agent (0421 ) was added to component A, and stirred evenly to obtain polyurethane epoxy resin composite modified asphalt 1#.

Embodiment 2

[0029] Add 40kg of polyethylene glycol (molecular weight 400) into the reaction kettle, the temperature in the kettle is 100-130°C, vacuumize and dehydrate for 2-3 hours, then add 0.2kg of triethanolamine catalyst and 240kg of bisphenol F epoxy resin (B30-5) , the temperature is 100-150 ° C, after 1-2 hours of reaction, the temperature is lowered to 70-90 ° C, and then 110 kg of polymethylene polyphenyl polyisocyanate is added to react for 2-3 hours to obtain a polyurethane modified epoxy resin; 70kg naphthalene oil, 60kg dibutyl phthalate (DBP), 450kg road petroleum asphalt (90#) mixed with 70kg naphthalene oil, 450kg road petroleum asphalt (90#) at a temperature of 120 ℃ and then used as component A; 70kg modified aromatic amine The B component of the curing agent (0422) was added to the A component, and stirred evenly to obtain the polyurethane epoxy resin composite modified asphalt 2#.

Embodiment 3

[0031]Add 40kg of polyethylene glycol (molecular weight 400) into the reaction kettle, the temperature in the kettle is 100-130°C, vacuumize and dehydrate for 2-3 hours, then add 0.2kg of triethanolamine catalyst and 120kg of bisphenol F epoxy resin (B30-5) 120kg bisphenol A type epoxy resin (E51), temperature 100~150℃, after 1~2h of reaction, lower the temperature to 70~90℃, then add 110kg toluene diisocyanate and react for 2~3h to obtain polyurethane modified ring Oxygen resin; mix polyurethane modified epoxy resin with 70kg naphthalene oil, 30g dibutyl phthalate (DBP), 30g dioctyl phthalate (DOP), 450kg road petroleum asphalt (110#) at 120°C After mixing and stirring at a temperature of 100°F, it was used as component A; 70kg of component B of the modified aromatic amine curing agent (605B) was added to component A, and stirred evenly to obtain polyurethane epoxy resin composite modified asphalt 3#.

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Abstract

The invention relates to composite modified asphalt. The composite modified asphalt is prepared from the following raw materials in percentage by weight: 23.1-45.5% of polyurethane modified epoxy resin, 5-10% of compatibilizer, 5-10% of plasticizer, 5-10% of curing agent and 40-60% of road petroleum asphalt, wherein the polyurethane modified epoxy resin is terminal-amino polyurethane modified epoxy resin, terminal-isocyanato polyurethane modified epoxy resin or imidazolyl-terminal-capped polyurethane modified epoxy resin, the compatibilizer is naphthalene oil, asphalt tar or a mixture of naphthalene oil and asphalt tar, the plasticizer is dioctyl phthalate, dibutyl phthalate or a mixture of dioctyl phthalate and dibutyl phthalate, the curing agent is a modified aromatic amine curing agent, and the road petroleum asphalt is 70# petroleum asphalt, 90# petroleum asphalt or 110# petroleum asphalt. The road performance of concrete adopting the polyurethane epoxy resin composite modified asphalt further meets the requirements of technical specifications and surpasses that of the similar imported product Japan Epoxy, so that the composite modified asphalt can be widely applied to the construction of steel bridge deck pavement, and has great significance in opening a market for domestic epoxy asphalt materials.

Description

technical field [0001] The invention relates to a composite modified asphalt material, in particular to a composite modified asphalt with excellent comprehensive performance and a preparation method thereof. Background technique [0002] With the rapid development of my country's national economy, more and more large-span orthotropic steel bridges are being built. The domestic and foreign academic circles and engineering circles have always attached great importance to the key technology research of long-span bridge construction. In recent years, many bridges have been constructed. There are many long-span bridges, such as Humen Bridge, Jiangyin Yangtze River Highway Bridge, etc., but the steel bridge deck pavement technology has not been well resolved. [0003] As a thermosetting material, epoxy asphalt concrete has excellent mechanical properties, high temperature stability and fatigue resistance. It has incomparable advantages over other asphalt mixtures currently used, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08G18/42C08G18/58C08G18/48C08G59/14C08L63/00C08K5/12
Inventor 李璐盛兴跃郝增恒
Owner 重庆市智翔铺道技术工程有限公司
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