CN103013147A - Flame-retardant modified asphalt and preparation method thereof - Google Patents
Flame-retardant modified asphalt and preparation method thereof Download PDFInfo
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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
The present invention relates to a kind of composition and method of making the same of bituminous material, specifically, relate to a kind of road fire-resistant modifying asphalt and preparation method thereof.
Background technology
Bituminous pavement since have damping, antiskid, lower noise, open to traffic early, the easy advantage such as reparation, more and more be used to tunnel road surface and mat formation.Because it is not smooth to ventilate in the tunnel, rate of traffic flow is large, and pitch is inflammable, in case accident causes fire in the tunnel, will cause great loss of life and personal injury and property damage.The pitch burning can produce a large amount of smog, and follows the release of toxic substance, will cause environmental pollution.Therefore, in order to ensure the use safety in tunnel, it is even more important that the flame retardant properties of tunnel asphalt just seems.
The fire retardant that the existing tunnel pavement asphalt is comparatively commonly used is halogenated flame retardant, phosphorus flame retardant, nitrogen phosphorus complex intumescent flame retardant and inorganic combustion inhibitor.Yet halogenated flame retardant can discharge toxic gas, the smoke suppressing extreme difference when burning; Flame retardant effect was better when red phosphorus and aluminium hydroxide were composite, but red phosphorus is inflammable when frictional impact, and it is not strong that phosphorus flame retardant adds the man-hour operability, and smoke suppressing effect is also not obvious; Nitrogen phosphorus complex intumescent flame retardant, processing difficulties, is separated out material surface easily at not anti-migration, and the easily moisture absorption, hydrolysis expanded easily in the course of processing and produced bubble etc.; At present inorganic combustion inhibitor commonly used is metal hydroxides, is mainly aluminium hydroxide or magnesium hydroxide, but wants the oxygen index that reaches higher, and its additive capacity needs more than 60%, and this moment, every pavement performance of modifying asphalt will decrease.
Summary of the invention
What the present invention will solve is that existing road fire-resistant asphalt fire retardant toxicity is large, pitch burning fuming amount is large, cost is high, construction requirement high-technology problem, a kind of fire-retardant modified asphalt and preparation method thereof is provided, can improve the flame retardant properties of bitumen for road use, take into account its pavement performance and smoke suppressing etc., significant to the application of domestic and international fire-retardant modified asphalt.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
A kind of fire-retardant modified asphalt, composed of the following components by weight:
The weight part of described smoke suppressor is 1 ~ 5 part.
The weight part of described coupling agent is 1 ~ 5 part.
Described basic asphalt generally is selected from wherein a kind of of bi tumenf orr oad, SBS modifying asphalt, SBR modifying asphalt, PE modifying asphalt, rubber-like modifying asphalt and fiber-like modifying asphalt.
Described smoke suppressor is at least a in zinc borate, silicon-dioxide and calcium oxide preferably.
Wherein, most preferably zinc borate of described smoke suppressor.
Described coupling agent is at least a in silane coupling agent, titanate coupling agent and xylogen coupling agent preferably.
Wherein, most preferably silane coupling agent of described coupling agent.
A kind of preparation method of above-mentioned fire-retardant modified asphalt, the method may further comprise the steps:
(1) takes by weighing by weight dry 2 ~ 10 parts of vermiculite powers, aluminium hydroxide and/or 5 ~ 20 parts of magnesium hydroxides, 0 ~ 5 part of smoke suppressor, and mix;
(2) according to 20% ~ 30% mass concentration, be 0 ~ 5 part coupling agent with the alcohol dilution weight part;
(3) the fire retardant material mixture that step (1) is obtained soak at room temperature 1 hour in the coupling agent diluent of step (2), and stir;
(4) immiscible material that step (3) is obtained was dried in moisture eliminator 3 ~ 4 hours under 60 ℃ ~ 70 ℃ temperature, after volatilizing fully to ethanol, was cooled to room temperature in moisture eliminator;
(5) basic asphalt of getting 100 parts of weight parts is heated to 120 ℃ ~ 140 ℃, remains on molten state;
(6) in the basic asphalt of step (5) gained molten state, add the mixture that step (4) obtains, and stir;
(7) mixture that step (6) is obtained is warming up to 150 ℃ ~ 170 ℃;
(8) adopt high-speed shearing machine the rotating speed down cut of 1000r/min ~ 2000r/min 5 ~ 10 minutes;
(9) adopt high-speed shearing machine the rotating speed down cut of 4000r/min ~ 5000r/min 30 ~ 40 minutes;
(10) hand operated mixing is 5 ~ 10 minutes, the bubble that produces to eliminate high speed shear.
Fire-retardant modified asphalt of the present invention is from the inorganic combustion inhibitor angle, and according to concrete dynamic modulus and the expansion characterization of adsorption thereof of vermiculite power, with the metal hydroxides cooperative flame retardant, and add smoke suppressant and reach the functions such as flame-retardant smoke inhibition, particularly:
The effect that aluminium hydroxide and magnesium hydroxide have is fire-retardant, fill discharges water molecules and absorbs a large amount of heat when burning.
Vermiculite power has higher cation exchange capacity and stronger cation exch ange adsorption ability, can improve flame retardant properties, absorption smog.
Zinc borate, silicon-dioxide and calcium oxide belong to smoke suppressor, mainly play the function that presses down cigarette.
Silane coupling agent and titanate coupling agent play and strengthen the inorganic fire-retarded lipophilicity that presses down the cigarette material, guarantee its dispersiveness in pitch and the cohesiveness of pitch.
The preparation method of fire-retardant modified asphalt of the present invention processes inorganic combustion inhibitor by coupling agent first, reduces the inorganic combustion inhibitor surface polarity, improves the lipophilicity of inorganic combustion inhibitor; Then the high-speed stirring effect by the high speed shear instrument is to make fire retardant and pitch reach physical blending, and fire retardant is scattered among the pitch uniformly with the form of particulate, thereby can reach fire-retardant effect when pitch participates in burning.
The invention has the beneficial effects as follows:
Fire-retardant modified asphalt of the present invention belongs to environment friendly inorganic class composite asphalt, show through large quantity research and test, have good pavement performance, can also improve the limiting oxygen index(LOI) in pitch when burning and reduce smoke density grade, reach the effect of low-carbon environment-friendly, energy-conserving fire retardant; Nontoxic, without the burn into good stability; Sustainable use, repeating utilization factor is higher, and cheap, originates and is widely used; Can when guaranteeing good pavement performance, improve tunnel sheet pavement inflammable this technical barrier when accident.
Simultaneously, preparation method's production cost of this fire-retardant modified asphalt is lower, produces environment friendly and pollution-freely, and preparation technology is simple, is widely used, and is suitable for promoting.
Embodiment
The present invention is described in further detail below by specific embodiment:
Following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
Wherein each embodiment unification selects the SBS modifying asphalt as basic asphalt, basic asphalt can be bi tumenf orr oad, SBS modifying asphalt, SBR modifying asphalt, PE modifying asphalt, rubber-like modifying asphalt and fiber-like modifying asphalt etc., and every pavement performance meets or the modified asphalt for pavement that is better than code requirement all can be used for the present invention.
325 orders are selected in the vermiculite power unification, but the order number of vermiculite power is not limited to this, can be dispersed in after boxshear apparatus is sheared among the pitch, and the vermiculite power that reaches physical blending with pitch all can be used for the present invention.
The smoke suppressor of following embodiment is selected from least a in zinc borate, silicon-dioxide and the calcium oxide, the invention is not restricted to this, can promote the firing level charing, reduce the glance coal release rate by physics or chemisorption, play smoke suppressing and asphalt performance all be can be used for the present invention without the smoke suppressor of considerable influence.
The coupling agent of following embodiment is selected from least a in silane coupling agent and the titanate coupling agent, the invention is not restricted to this, can improve the inorganic combustion inhibitor dispersiveness by surface modification, reduce its wetting ability and all can use in the present invention with bitumen compatibility and to the coupling agent of asphalt performance without considerable influence.
Embodiment 1
Take by weighing according to weight part: 100 parts of SBS modifying asphalts; 2 parts of dry vermiculite powers; 5 parts in aluminium hydroxide;
(1) vermiculite power and the aluminium hydroxide that takes by weighing is stirred into uniform mixture;
(2) the SBS modifying asphalt of getting 100 parts of weight parts is heated to 120 ℃ ~ 125 ℃, remains on molten state;
(3) in the SBS modifying asphalt of step (2) gained molten state, add the mixture that step (1) obtains, and use agitator to stir;
(4) mixture that step (3) is obtained is warming up to 150 ℃ ~ 155 ℃;
(5) adopt high-speed shearing machine the rotating speed down cut of 1000r/min 5 ~ 8 minutes;
(6) improve rotating speed, adopt high-speed shearing machine the rotating speed down cut of 4000r/min 30 ~ 35 minutes;
(7) hand operated mixing is 5 ~ 10 minutes, eliminates the bubble that high speed shear produces, and tinning insulation storage is stand-by.
Embodiment 2
Take by weighing according to weight part: 100 parts of SBS modifying asphalts; 4 parts of dry vermiculite powers; 10 parts in aluminium hydroxide; 1 part of silane coupling agent; 1 part of zinc borate;
(1) vermiculite power, aluminium hydroxide and the zinc borate that takes by weighing stirred into uniform mixture;
(2) according to 20% mass concentration, the silane coupling agent that takes by weighing with alcohol dilution;
(3) the fire retardant material mixture that step (1) is obtained soak at room temperature 1 hour in the silane coupling agent diluent of step (2), and stir slightly;
(4) immiscible material that step (3) is obtained is under 60 ℃ ~ 65 ℃ temperature, and oven dry is 3 hours in moisture eliminator, and after volatilizing fully to ethanol, it is for subsequent use to be cooled to room temperature in moisture eliminator;
(5) the SBS modifying asphalt that takes by weighing is heated to 125 ℃ ~ 130 ℃, remains on molten state;
(6) in the SBS modifying asphalt of step (5) gained molten state, add the mixture that step (4) obtains, and use agitator to stir;
(7) mixture that step (6) is obtained is warming up to 150 ℃ ~ 155 ℃;
(8) adopt high-speed shearing machine the rotating speed down cut of 1000r/min 8 ~ 10 minutes;
(9) improve rotating speed, adopt high-speed shearing machine the rotating speed down cut of 4500r/min 30 ~ 35 minutes;
(10) hand operated mixing is 5 ~ 10 minutes, eliminates the bubble that high speed shear produces, and tinning insulation storage is stand-by.
Embodiment 3
Take by weighing according to weight part: 100 parts of SBS modifying asphalts; 5 parts of dry vermiculite powers; 15 parts in aluminium hydroxide; 3 parts of silane coupling agents; 3 parts of zinc borates;
(1) vermiculite power, aluminium hydroxide and the zinc borate that takes by weighing stirred into uniform mixture;
(2) according to 22% mass concentration, the silane coupling agent that takes by weighing with alcohol dilution;
(3) the fire retardant material mixture that step (1) is obtained soak at room temperature 1 hour in the silane coupling agent diluent of step (2), and stir slightly;
(4) immiscible material that step (3) is obtained is under 60 ℃ ~ 65 ℃ temperature, and oven dry is 3.5 hours in moisture eliminator, and after volatilizing fully to ethanol, it is for subsequent use to be cooled to room temperature in moisture eliminator;
(5) the SBS modifying asphalt that takes by weighing is heated to 130 ℃ ~ 135 ℃, remains on molten state;
(6) in the SBS modifying asphalt of step (5) gained molten state, add the mixture that step (4) obtains, and use agitator to stir;
(7) mixture that step (6) is obtained is warming up to 155 ℃ ~ 160 ℃;
(8) adopt high-speed shearing machine the rotating speed down cut of 1000r/min 5 ~ 8 minutes;
(9) improve rotating speed, adopt high-speed shearing machine the rotating speed down cut of 5000r/min 35 ~ 40 minutes;
(10) hand operated mixing is 5 ~ 10 minutes, eliminates the bubble that high speed shear produces, and tinning insulation storage is stand-by.
Embodiment 4
Take by weighing according to weight part: 100 parts of SBS modifying asphalts; 8 parts of dry vermiculite powers; 20 parts in aluminium hydroxide; 5 parts of silane coupling agents; 5 parts of zinc borates;
(1) vermiculite power, aluminium hydroxide and the zinc borate that takes by weighing stirred into uniform mixture;
(2) according to 24% mass concentration, the silane coupling agent that takes by weighing with alcohol dilution;
(3) the fire retardant material mixture that step (1) is obtained soak at room temperature 1 hour in the silane coupling agent diluent of step (2), and stir slightly;
(4) immiscible material that step (3) is obtained is under 60 ℃ ~ 65 ℃ temperature, and oven dry is 3.5 hours in moisture eliminator, and after volatilizing fully to ethanol, it is for subsequent use to be cooled to room temperature in moisture eliminator;
(5) the SBS modifying asphalt that takes by weighing is heated to 135 ℃ ~ 140 ℃, remains on molten state;
(6) in the SBS modifying asphalt of step (5) gained molten state, add the mixture that step (4) obtains, and use agitator to stir;
(7) mixture that step (6) is obtained is warming up to 165 ℃ ~ 170 ℃;
(8) adopt high-speed shearing machine the rotating speed down cut of 1500r/min 8 ~ 10 minutes;
(9) improve rotating speed, adopt high-speed shearing machine the rotating speed down cut of 4000r/min 35 ~ 40 minutes;
(10) hand operated mixing is 5 ~ 10 minutes, eliminates the bubble that high speed shear produces, and tinning insulation storage is stand-by.
Embodiment 5
Take by weighing according to weight part: 100 parts of SBS modifying asphalts; 10 parts of dry vermiculite powers; 10 parts of magnesium hydroxides; 3 parts of titanate coupling agents; 3 parts of silicon-dioxide;
(1) vermiculite power, magnesium hydroxide and the silicon-dioxide that takes by weighing is stirred into uniform mixture;
(2) according to 26% mass concentration, the titanate coupling agent that takes by weighing with alcohol dilution;
(3) the fire retardant material mixture that step (1) is obtained soak at room temperature 1 hour in the titanate coupling agent diluent of step (2), and stir slightly;
(4) immiscible material that step (3) is obtained is under 65 ℃ ~ 70 ℃ temperature, and oven dry is 4 hours in moisture eliminator, and after volatilizing fully to ethanol, it is for subsequent use to be cooled to room temperature in moisture eliminator;
(5) the SBS modifying asphalt that takes by weighing is heated to 120 ℃ ~ 125 ℃, remains on molten state;
(6) in the SBS modifying asphalt of step (5) gained molten state, add the mixture that step (4) obtains, and use agitator to stir;
(7) mixture that step (6) is obtained is warming up to 150 ℃ ~ 155 ℃;
(8) adopt high-speed shearing machine the rotating speed down cut of 1500r/min 5 ~ 8 minutes;
(9) improve rotating speed, adopt high-speed shearing machine the rotating speed down cut of 4500r/min 30 ~ 35 minutes;
(10) hand operated mixing is 5 ~ 10 minutes, eliminates the bubble that high speed shear produces, and tinning insulation storage is stand-by.
Embodiment 6
Take by weighing according to weight part: 100 parts of SBS modifying asphalts; 8 parts of dry vermiculite powers; 20 parts of magnesium hydroxides; 3 parts of xylogen coupling agents; 3 parts of ferric oxide;
(1) vermiculite power, magnesium hydroxide and the ferric oxide that takes by weighing stirred into uniform mixture;
(2) according to 28% mass concentration, the xylogen coupling agent that takes by weighing with alcohol dilution;
(3) the fire retardant material mixture that step (1) is obtained soak at room temperature 1 hour in the xylogen coupling agent diluent of step (2), and stir slightly;
(4) immiscible material that step (3) is obtained is under 65 ℃ ~ 70 ℃ temperature, and oven dry is 4 hours in moisture eliminator, and after volatilizing fully to ethanol, it is for subsequent use to be cooled to room temperature in moisture eliminator;
(5) the SBS modifying asphalt that takes by weighing is heated to 125 ℃ ~ 130 ℃, remains on molten state;
(6) in the SBS modifying asphalt of step (5) gained molten state, add the mixture that step (4) obtains, and use agitator to stir;
(7) mixture that step (6) is obtained is warming up to 150 ℃ ~ 155 ℃;
(8) adopt high-speed shearing machine the rotating speed down cut of 1500r/min 8 ~ 10 minutes;
(9) improve rotating speed, adopt high-speed shearing machine the rotating speed down cut of 5000r/min 30 ~ 35 minutes;
(10) hand operated mixing is 5 ~ 10 minutes, eliminates the bubble that high speed shear produces, and tinning insulation storage is stand-by.
Embodiment 7
Take by weighing according to weight part: 100 parts of SBS modifying asphalts; 10 parts of dry vermiculite powers; 5 parts in aluminium hydroxide; 5 parts of magnesium hydroxides; 1 part of silane coupling agent; 2 parts of titanate coupling agents; 2 parts of zinc borates; Silica 1 part;
(1) vermiculite power, aluminium hydroxide, magnesium hydroxide, zinc borate and the silicon-dioxide that takes by weighing is stirred into uniform mixture;
(2) according to 30% mass concentration, the silane coupling agent and the titanate coupling agent that take by weighing with alcohol dilution;
(3) the fire retardant material mixture that step (1) is obtained soak at room temperature 1 hour in the coupling agent diluent of step (2), and stir slightly;
(4) immiscible material that step (3) is obtained is under 65 ℃ ~ 70 ℃ temperature, and oven dry is 3 hours in moisture eliminator, and after volatilizing fully to ethanol, it is for subsequent use to be cooled to room temperature in moisture eliminator;
(5) the SBS modifying asphalt that takes by weighing is heated to 130 ℃ ~ 135 ℃, remains on molten state;
(6) in the SBS modifying asphalt of step (5) gained molten state, add the mixture that step (4) obtains, and use agitator to stir;
(7) mixture that step (6) is obtained is warming up to 155 ℃ ~ 160 ℃;
(8) adopt high-speed shearing machine the rotating speed down cut of 2000r/min 5 ~ 8 minutes;
(9) improve rotating speed, adopt high-speed shearing machine the rotating speed down cut of 4000r/min 35 ~ 40 minutes;
(10) hand operated mixing is 5 ~ 10 minutes, eliminates the bubble that high speed shear produces, and tinning insulation storage is stand-by.
Embodiment 8
Take by weighing according to weight part: 100 parts of SBS modifying asphalts; 8 parts of dry vermiculite powers; 5 parts in aluminium hydroxide; 10 parts of magnesium hydroxides; 2 parts of titanate coupling agents; 3 parts of xylogen coupling agents; 2 parts of zinc borates; 1 part of ferric oxide;
(1) vermiculite power, aluminium hydroxide, magnesium hydroxide, zinc borate and the ferric oxide that takes by weighing stirred into uniform mixture;
(2) according to 28% mass concentration, the titanate coupling agent and the xylogen coupling agent that take by weighing with alcohol dilution;
(3) the fire retardant material mixture that step (1) is obtained soak at room temperature 1 hour in the coupling agent diluent of step (2), and stir slightly;
(4) immiscible material that step (3) is obtained is under 60 ℃ ~ 65 ℃ temperature, and oven dry is 3.5 hours in moisture eliminator, and after volatilizing fully to ethanol, it is for subsequent use to be cooled to room temperature in moisture eliminator;
(5) the SBS modifying asphalt that takes by weighing is heated to 135 ℃ ~ 140 ℃, remains on molten state;
(6) in the SBS modifying asphalt of step (5) gained molten state, add the mixture that step (4) obtains, and use agitator to stir;
(7) mixture that step (6) is obtained is warming up to 165 ℃ ~ 170 ℃;
(8) adopt high-speed shearing machine the rotating speed down cut of 2000r/min 8 ~ 10 minutes;
(9) improve rotating speed, adopt high-speed shearing machine the rotating speed down cut of 4500r/min 35 ~ 40 minutes;
(10) hand operated mixing is 5 ~ 10 minutes, eliminates the bubble that high speed shear produces, and tinning insulation storage is stand-by.
Embodiment 9
Take by weighing according to weight part: 100 parts of SBS modifying asphalts; 10 parts of dry vermiculite powers; 10 parts in aluminium hydroxide; 10 parts of magnesium hydroxides; 1 part of silane coupling agent; 2 parts of xylogen coupling agents; 2 parts of silicon-dioxide; 3 parts of ferric oxide;
(1) vermiculite power, aluminium hydroxide, magnesium hydroxide, silicon-dioxide and the ferric oxide that takes by weighing stirred into uniform mixture;
(2) according to 30% mass concentration, the silane coupling agent and the xylogen coupling agent that take by weighing with alcohol dilution;
(3) the fire retardant material mixture that step (1) is obtained soak at room temperature 1 hour in the coupling agent diluent of step (2), and stir slightly;
(4) immiscible material that step (3) is obtained is under 65 ℃ ~ 70 ℃ temperature, and oven dry is 4 hours in moisture eliminator, and after volatilizing fully to ethanol, it is for subsequent use to be cooled to room temperature in moisture eliminator;
(5) the SBS modifying asphalt that takes by weighing is heated to 135 ℃ ~ 140 ℃, remains on molten state;
(6) in the SBS modifying asphalt of step (5) gained molten state, add the mixture that step (4) obtains, and use agitator to stir;
(7) mixture that step (6) is obtained is warming up to 165 ℃ ~ 170 ℃;
(8) adopt high-speed shearing machine the rotating speed down cut of 2000r/min 8 ~ 10 minutes;
(9) improve rotating speed, adopt high-speed shearing machine the rotating speed down cut of 5000r/min 35 ~ 40 minutes;
(10) hand operated mixing is 5 ~ 10 minutes, eliminates the bubble that high speed shear produces, and tinning insulation storage is stand-by.
In order to verify that fire-retardant modified asphalt of the present invention has good pavement performance and flame-proof smoke-suppressing, (JTJE20-2011) stipulate to carry out basic performance tests according to " highway engineering pitch and Asphalt Mixture Experiment rules ".(GB/T2408-2008) stipulating to carry out oxygen index with reference to " Plastics Combustion method for testing performance-oxygen index method " tests.(GB/T8627) stipulating to carry out smoke density with reference to " material of construction burning or the smoke density grade test method of decomposing " tests.(GA/T505) stipulating to carry out flue gas toxity with reference to " the fire scenario flue gas preparation method of material " tests.The concrete test-results of each embodiment is as shown in table 1 below.
The test-results of table 1 fire-retardant modified asphalt
" People's Republic of China's petroleum chemical industry standard " requirement (NB/SH/T0820-2010) is all satisfied in evidence, its oxygen index of fire-retardant modified asphalt of the present invention, penetration degree, ductility, softening temperature, viscosity and oxygen index.Smoke density grade is all less than 75, and the flue gas toxity grade safe one-level (ZA1) that is as the criterion has reached the related request of country to fire retardant material.
Claims (9)
1. a fire-retardant modified asphalt is characterized in that, and is composed of the following components by weight:
2. a kind of fire-retardant modified asphalt according to claim 1 is characterized in that, the weight part of described smoke suppressor is 1 ~ 5 part.
3. a kind of fire-retardant modified asphalt according to claim 1 is characterized in that, the weight part of described coupling agent is 1 ~ 5 part.
4. a kind of fire-retardant modified asphalt according to claim 1 is characterized in that, described basic asphalt is selected from wherein a kind of of bi tumenf orr oad, SBS modifying asphalt, SBR modifying asphalt, PE modifying asphalt, rubber-like modifying asphalt and fiber-like modifying asphalt.
5. a kind of fire-retardant modified asphalt according to claim 1 is characterized in that, described smoke suppressor is selected from least a in zinc borate, silicon-dioxide and the calcium oxide.
6. a kind of fire-retardant modified asphalt according to claim 5 is characterized in that, described smoke suppressor is zinc borate.
7. a kind of fire-retardant modified asphalt according to claim 1 is characterized in that, described coupling agent is selected from least a in silane coupling agent, titanate coupling agent and the xylogen coupling agent.
8. a kind of fire-retardant modified asphalt according to claim 7 is characterized in that, described coupling agent is silane coupling agent.
9. one kind such as the preparation method of fire-retardant modified asphalt as described in each among the claim 1-8, it is characterized in that the method may further comprise the steps:
(1) takes by weighing by weight dry 2 ~ 10 parts of vermiculite powers, aluminium hydroxide and/or 5 ~ 20 parts of magnesium hydroxides, 0 ~ 5 part of smoke suppressor, and mix;
(2) according to 20% ~ 30% mass concentration, be 0 ~ 5 part coupling agent with the alcohol dilution weight part;
(3) the fire retardant material mixture that step (1) is obtained soak at room temperature 1 hour in the coupling agent diluent of step (2), and stir;
(4) immiscible material that step (3) is obtained was dried in moisture eliminator 3 ~ 4 hours under 60 ℃ ~ 70 ℃ temperature, after volatilizing fully to ethanol, was cooled to room temperature in moisture eliminator;
(5) basic asphalt of getting 100 parts of weight parts is heated to 120 ℃ ~ 140 ℃, remains on molten state;
(6) in the basic asphalt of step (5) gained molten state, add the mixture that step (4) obtains, and stir;
(7) mixture that step (6) is obtained is warming up to 150 ℃ ~ 170 ℃;
(8) adopt high-speed shearing machine the rotating speed down cut of 1000r/min ~ 2000r/min 5 ~ 10 minutes;
(9) adopt high-speed shearing machine the rotating speed down cut of 4000r/min ~ 5000r/min 30 ~ 40 minutes;
(10) hand operated mixing is 5 ~ 10 minutes, the bubble that produces to eliminate high speed shear.
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Cited By (9)
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| CN103554932A (en) * | 2013-10-17 | 2014-02-05 | 王朝辉 | Modified asphalt with flame retardance and hot-mix emission reduction functions |
| CN105385175A (en) * | 2015-12-03 | 2016-03-09 | 梅庆波 | Preparation method for flame-retardant noise-preventing self-cleaning pavement material |
| CN107286554A (en) * | 2017-06-28 | 2017-10-24 | 常州万博金属构件厂 | A kind of flame-retardant pitch and preparation method thereof |
| CN107285666A (en) * | 2017-07-04 | 2017-10-24 | 中国路桥工程有限责任公司 | Inorganic fire-retarded modified pitch and its preparation technology |
| CN107722652A (en) * | 2017-10-25 | 2018-02-23 | 中石油燃料油有限责任公司研究院 | A kind of pitch smoke inhibition modifying agent, suppression cigarette modified pitch and preparation method thereof |
| CN108410019A (en) * | 2018-03-30 | 2018-08-17 | 潍坊万丰新材料科技有限公司 | Compound fire-proof smoke suppressor |
| CN108442202A (en) * | 2018-03-21 | 2018-08-24 | 江苏中路工程检测有限公司 | A kind of antiskid depositing dust subtracts haze pavement structure |
| CN109988430A (en) * | 2019-02-22 | 2019-07-09 | 湖南鑫长胜材料科技有限公司 | A kind of flame-retardant pitch and preparation method |
| CN110204784A (en) * | 2019-05-23 | 2019-09-06 | 长沙理工大学 | A kind of asphalt flame-retardant agent and preparation method and application |
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| CN103554932A (en) * | 2013-10-17 | 2014-02-05 | 王朝辉 | Modified asphalt with flame retardance and hot-mix emission reduction functions |
| CN103554932B (en) * | 2013-10-17 | 2015-09-30 | 王朝辉 | A kind of have fire-retardantly mix with heat the modifying asphalt reducing discharging effect |
| CN105385175A (en) * | 2015-12-03 | 2016-03-09 | 梅庆波 | Preparation method for flame-retardant noise-preventing self-cleaning pavement material |
| CN107286554A (en) * | 2017-06-28 | 2017-10-24 | 常州万博金属构件厂 | A kind of flame-retardant pitch and preparation method thereof |
| CN107285666A (en) * | 2017-07-04 | 2017-10-24 | 中国路桥工程有限责任公司 | Inorganic fire-retarded modified pitch and its preparation technology |
| CN107285666B (en) * | 2017-07-04 | 2019-09-17 | 中国路桥工程有限责任公司 | Inorganic fire-retarded modified pitch and its preparation process |
| CN107722652A (en) * | 2017-10-25 | 2018-02-23 | 中石油燃料油有限责任公司研究院 | A kind of pitch smoke inhibition modifying agent, suppression cigarette modified pitch and preparation method thereof |
| CN108442202A (en) * | 2018-03-21 | 2018-08-24 | 江苏中路工程检测有限公司 | A kind of antiskid depositing dust subtracts haze pavement structure |
| CN108410019A (en) * | 2018-03-30 | 2018-08-17 | 潍坊万丰新材料科技有限公司 | Compound fire-proof smoke suppressor |
| CN109988430A (en) * | 2019-02-22 | 2019-07-09 | 湖南鑫长胜材料科技有限公司 | A kind of flame-retardant pitch and preparation method |
| CN110204784A (en) * | 2019-05-23 | 2019-09-06 | 长沙理工大学 | A kind of asphalt flame-retardant agent and preparation method and application |
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