CN101817983A - Warm mix flame-retardant modified asphalt and preparation method thereof - Google Patents
Warm mix flame-retardant modified asphalt and preparation method thereof Download PDFInfo
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- CN101817983A CN101817983A CN200910118430A CN200910118430A CN101817983A CN 101817983 A CN101817983 A CN 101817983A CN 200910118430 A CN200910118430 A CN 200910118430A CN 200910118430 A CN200910118430 A CN 200910118430A CN 101817983 A CN101817983 A CN 101817983A
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Abstract
The invention discloses a warm mix flame-retardant modified asphalt and a preparation method thereof. The method comprises the following steps of: heating polymer modified asphalt to the temperature of between 100 and 120 DEG C into a melting state, stirring to dehydrate the asphalt, and heating and maintaining the polymer modified asphalt at the temperature of between 140 and 150 DEG C; adding warm mix flame-retardant modifiers into the polymer modified asphalt, adding with stirring, wherein the adding order is an organic viscosity reducer, a decabromodiphenyl oxide, an antimonous oxide, a hydrated magnesium silicate and a smoke-suppressing flame-retardant assistant in turn, and stirring for about 30 to 40 minutes, wherein in the process of adding and stirring, the temperature of the polymer modified asphalt is controlled between 140 and 150 DEG C; and finally, obtaining the warm mix flame-retardant modified asphalt. The warm mix flame-retardant modified asphalt can reduce the construction temperature of asphalt concrete, reduce the production energy consumption, save the production cost, reduce the smoke emissions in the construction of the asphalt concrete, and improve the construction environments, and has higher flame retardance and smoke suppression performance.
Description
Technical field
The present invention relates to a kind of modifying asphalt, relate in particular to a kind of warm mix flame-retardant modified asphalt.
The invention still further relates to the preparation method of this warm mix flame-retardant modified asphalt.
Background technology
Along with development and China's raising of building large-scale highway technology level in recent years of China's economy, there is seam in people's cement concrete pavement of recognizing gradually, and surface irregularity causes vehicle pitching, and comfortableness is poor, and is long in time limit, shortcomings such as maintenance difficult; Cement wears no resistance, and surperficial sliding resistance is poor, causes traffic accident in the tunnel, and cement concrete pavement is under dampness in the tunnel according to surveying, and its frictional coefficient only is 40% of a drying regime, is 25% of bituminous concrete; Because the tunnel is the tubular structure of relative closure, the noise the tunnel in will be higher than the noise the tunnel outside, and noise produces in the tunnel and resonates and superposition phenomenon, makes that noise is bigger in the tunnel, the time length is longer, difficult dissipation, influences traffic environment.In addition, the destructiveness of tunnel fire hazard is than big many of general building fire, fire is in case take place, the short period of time temperature raises suddenly, repair on can not only ignite tunnel internal plain asphalt road surface, hole wall, produce a large amount of toxic smogs, reduce tunnel visibility meter, and destroy the waterproof system in tunnel, cause tunnel infiltration in various degree to leak, thoroughly lining cutting is produced huge destruction, cause structure bearing capacity to reduce or completely lose, be that the victim is difficult to escape, rescue work is difficult to carry out, and causes large-scale loss of life and personal injury and property damage.How, reduce the generation of fire failure as far as possible, use a kind of novel ground surface material to become the technical problem that people are badly in need of solving according to the tunnel fire hazard accident characteristic.
Summary of the invention
The present invention is just in order to overcome above technical deficiency, provide a kind of can save energy, improve construction environment, reduce engineering cost, and the warm mix flame-retardant modified asphalt of environmental protection and preparation method thereof.
In order to overcome above technological deficiency, the present invention adopts following technical scheme:
The invention provides a kind of warm mix flame-retardant modified asphalt, is that polymer modified asphalt of 70-95 part and warm mix flame-retardant properties-correcting agent that weight part is 10-20 part are made by weight part, and described warm mix flame-retardant properties-correcting agent is made by following component and parts by weight thereof:
Decabromodiphenyl oxide 4-7 part;
Antimonous oxide is 2-5 part;
Hydrated magnesium silicate 5-8 part;
Smoke-inhibiting flame retardant auxiliary agent 5-15 part;
Organic viscosity-depression agent 1-4 part.
Described polymer modified asphalt is by matrix pitch 85-95 part (weight part), properties-correcting agent 1-5 part (weight part), and blender 1-5 part (weight part), stablizer 1-3 part (weight part) is made.
Described pitch is a kind of or its combination of 110# matrix pitch, 130# matrix pitch, 140# matrix pitch.
Described properties-correcting agent is selected a kind of of styrene-butadiene rubber(SBR), solid resin or its combination for use.
Described blender is selected the extraction oil that is rich in aromatic hydrocarbons, a kind of or its combination of rubber oil for use.
Described stablizer is selected sulphur class stablizer for use.
A kind of or its combination of described smoke-inhibiting flame retardant selection of auxiliary silicon-dioxide, ferric oxide, calcium oxide.
Described organic viscosity-depression agent is selected warm-mixing agent EC-120 for use.
The present invention also provides a kind of preparation method as above-mentioned warm mix flame-retardant modified asphalt, comprises the steps:
A, molten polymer modifying asphalt: with weight part is that the polymer modified asphalt of 70-95 part is heated to 100-120 ℃, reaches molten state, stirs 10-20min and makes its dehydration, and then be heated and remain on 140-150 ℃;
B, be that the warm mix flame-retardant properties-correcting agent of 10-20 part joins in the polymer modified asphalt of steps A gained with weight part, stir while adding, churning time is 30-40min, and the temperature of polymer modified asphalt is controlled at 140-150 ℃ in the adition process, makes warm mix flame-retardant modified asphalt at last.
Wherein, the addition sequence of warm mix flame-retardant properties-correcting agent is followed successively by organic viscosity-depression agent, decabromodiphenyl mystery, antimonous oxide, hydrated magnesium silicate, smoke-inhibiting flame retardant auxiliary agent among the step B.
Warm mix flame-retardant modified asphalt of the present invention can reduce the asphalt concrete construction temperature on the one hand, reduces production energy consumption, saves production cost, and reduces the smoke discharge amount of asphalt concrete construction, improves construction environment; This on the other hand modifying asphalt has higher fire-retardant and smoke suppressing.
Embodiment
The present invention is further illustrated below in conjunction with specific embodiment:
The flame retardant properties of warm mix flame-retardant agent reaches fire-retardant purpose by following one or more approach: endothermic effect, coating effect, blanketing effect, trans effect, retarding effect, synergistic effect.Fire-retardant fire retardant mechanism is summarised as: trap heat mechanism, gas phase fire retardant mechanism, coagulation phase fire retardant mechanism, inhibition chain fire retardant mechanism etc.Improve the bituminous high-temperature behavior after the key that temperature is mixed technology is embodied in the agent of admixture warm mix flame-retardant, the anti-plastic flow performance of bituminous is improved, take into account the bituminous low-temperature performance simultaneously, prolong the work-ing life of bituminous pavement.
Oxygen index, smoke density and the flue gas toxity grade that the warm mix flame-retardant modified asphalt of the present invention's preparation detects meets outside the relevant regulations of country for fire retardant material, and has oxygen index＞32%, reach the difficulty combustion one-level of Japanese JISK7201 regulation, flue gas toxity reaches the accurate safe one-level of national material producing smoke density classification GA132-1996, temperature is compared the characteristics with good low temperature construction during the construction of this kind asphalt and general plain asphalt compound simultaneously, reduces by 30% production energy consumption.Pitch has the shortcoming of thermal degradation when in addition, rising along with temperature, the bituminous degree of aging can become multiple even more severe degree to wear out, and the flue gas toxity of this moment also can be at double increase, the pitch that adds the warm mix flame-retardant agent has good mix workability at 140～150 ℃, reduced the discharging of dusty gas simultaneously, built good construction environment, also presented a slice greenery of oneself for the environmental protection cause of society! Concrete construction temperature parameter sees Table 1
The contrast table of table 1, warm mix flame-retardant modified asphalt Heating temperature and plain asphalt
Show by table 1: warm mix flame-retardant modified asphalt has not only reduced the energy that the construction process medium pitch adds heat rejection, has reduced the energy that gathers materials in heat-processed to be consumed simultaneously and has had good energy-conservation, environmental protection characteristics.
Embodiment 1
Take by weighing 85 parts of polymer modified asphalt SBS (I-A) by weight, 15 parts of warm mix flame-retardant properties-correcting agent;
Warm mix flame-retardant agent composition ratio:
Warm-mixing agent EC-120:3 part; Decabromodiphenyl oxide: 4 parts; Antimonous oxide: 2 parts; Hydrated magnesium silicate: 5 parts; Other auxiliary agents: 10 parts.
Other auxiliary agents are the smoke-inhibiting flame retardant auxiliary agent, are one of silicon-dioxide, ferric oxide, calcium oxide or its combination.
Molten polymer modifying asphalt: above-mentioned polymer modified asphalt is heated to 100 ℃, reaches molten state, stir 20min and make its dehydration, and then be heated and remain on 150 ℃;
Add warm mix flame-retardant properties-correcting agent: warm mix flame-retardant properties-correcting agent is joined in the polymer modified asphalt of above gained, stir while adding, addition sequence is followed successively by organic viscosity-depression agent, decabromodiphenyl mystery, antimonous oxide, hydrated magnesium silicate and smoke-inhibiting flame retardant auxiliary agent, stir about 30min, in adding and the whipping process, the temperature of polymer modified asphalt is controlled at 150 ℃, obtains warm mix flame-retardant modified asphalt at last.
Embodiment 2
Take by weighing 90 parts of polymer modified asphalt SBS (I-A) by weight, 10 parts of warm mix flame-retardant agent;
Warm mix flame-retardant agent composition is formed:
Warm-mixing agent EC-120:2 part; Decabromodiphenyl oxide: 5 parts; Antimonous oxide: 3 parts; Hydrated magnesium silicate: 6 parts; Other auxiliary agents: 15 parts.
Other auxiliary agents are the smoke-inhibiting flame retardant auxiliary agent, are one of silicon-dioxide, ferric oxide, calcium oxide or its combination.
Molten polymer modifying asphalt: above-mentioned polymer modified asphalt is heated to 110 ℃, reaches molten state, stir 15min and make its dehydration, and then be heated and remain on 145 ℃;
Add warm mix flame-retardant properties-correcting agent: warm mix flame-retardant properties-correcting agent is joined in the polymer modified asphalt of above gained, stir while adding, addition sequence is followed successively by organic viscosity-depression agent, decabromodiphenyl mystery, antimonous oxide, hydrated magnesium silicate and smoke-inhibiting flame retardant auxiliary agent, stir about 35min, in adding and the whipping process, the temperature of polymer modified asphalt is controlled at 145 ℃, obtains warm mix flame-retardant modified asphalt at last.
Embodiment 3
Take by weighing 85 parts of polymer modified asphalt SBS (I-B) by weight, 15 parts of warm mix flame-retardant agent;
Warm mix flame-retardant agent composition is formed:
Warm-mixing agent EC-120:1 part; Decabromodiphenyl oxide: 6 parts; Antimonous oxide: 4 parts; Hydrated magnesium silicate: 7 parts; Other auxiliary agents: 10 parts;
Other auxiliary agents are the smoke-inhibiting flame retardant auxiliary agent, are one of silicon-dioxide, ferric oxide, calcium oxide or its combination.
Molten polymer modifying asphalt: above-mentioned polymer modified asphalt is heated to 115 ℃, reaches molten state, stir 10min and make its dehydration, and then be heated and remain on 150 ℃;
Add warm mix flame-retardant properties-correcting agent: warm mix flame-retardant properties-correcting agent is joined in the polymer modified asphalt of above gained, stir while adding, addition sequence is followed successively by organic viscosity-depression agent, decabromodiphenyl mystery, antimonous oxide, hydrated magnesium silicate and smoke-inhibiting flame retardant auxiliary agent, stir about 30min, in adding and the whipping process, the temperature of polymer modified asphalt is controlled at 150 ℃, obtains warm mix flame-retardant modified asphalt at last.
Embodiment 4
Take by weighing 90 parts of polymer modified asphalt SBS (I-B) by weight, 10 parts of warm mix flame-retardant agent;
Warm mix flame-retardant agent composition is formed:
Warm-mixing agent EC-120:4 part; Decabromodiphenyl oxide: 7 parts; Antimonous oxide: 5 parts; Hydrated magnesium silicate: 8 parts; Other auxiliary agents: 5 parts.
Other auxiliary agents are the smoke-inhibiting flame retardant auxiliary agent, are one of silicon-dioxide, ferric oxide, calcium oxide or its combination.
Molten polymer modifying asphalt: above-mentioned polymer modified asphalt is heated to 120 ℃, reaches molten state, stir 20min and make its dehydration, and then be heated and remain on 140 ℃;
Add warm mix flame-retardant properties-correcting agent: warm mix flame-retardant properties-correcting agent is joined in the polymer modified asphalt of above gained, stir while adding, addition sequence is followed successively by organic viscosity-depression agent, decabromodiphenyl mystery, antimonous oxide, hydrated magnesium silicate and smoke-inhibiting flame retardant auxiliary agent, stir about 40min, in adding and the whipping process, the temperature of polymer modified asphalt is controlled at 140 ℃, obtains warm mix flame-retardant modified asphalt at last.
With the warm mix flame-retardant pitch among top four embodiment according to following standard testing: penetration degree T0604-2000, ductility 0605-1993, softening temperature T0606-2000, oxygen index method GB/T2406-93, smoke density GB/T8627-1999, material producing smoke density classification GA132-1996, gained data such as following table:
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| The pitch kind | Modifying asphalt SBS (I-A) | Modifying asphalt SBS (I-A) | Modifying asphalt SBS (I-B) | Modifying asphalt SBS (I-B) |
| The warm mix flame-retardant modified asphalt conformance with standard | Modifying asphalt SBS (I-C) | Modifying asphalt SBS (I-C) | Modifying asphalt SBS (I-D) | Modifying asphalt SBS (I-D) |
| 25 ℃ of penetration degrees (0.1mm) | ??65 | ??68 | ??43 | ??48 |
| Softening temperature (℃) | ??78 | ??70 | ??86 | ??82 |
| 5 ℃ of ductilities (cm) | ??31 | ??34 | ??21 | ??26 |
| Oxygen index (%) | ??33 | ??31 | ??32.5 | ??31 |
| Smoke density | ??55 | ??58 | ??53 | ??58 |
| The flue gas toxity grade | Accurate safe one-level | Accurate safe one-level | Accurate safe one-level | Accurate safe one-level |
As seen from the above table, ductility, penetration degree, the softening temperature by the warm mix flame-retardant modified asphalt of the present invention preparation all reached the polymkeric substance SBS (I-C) of JTG F40-2004 " asphalt highway construction technique normalizing " requirement, the requirement of SBS (I-D) technical indicator.And oxygen index arrives the difficulty combustion one-level level of Japanese JISK7201 regulation, and smoke density is all less than 75, and the flue gas toxity safe one-level that is as the criterion reaches the related request of country to fire retardant material.This explanation warm mix flame-retardant pitch not only has good flame-retardant smoke inhibition effect, and asphalt performance also satisfies " asphalt highway construction technique normalizing " requirement simultaneously, in the Application Areas of pavement material good prospect is arranged!
Claims (10)
1. warm mix flame-retardant modified asphalt is that polymer modified asphalt of 70-95 part and warm mix flame-retardant properties-correcting agent that weight part is 10-20 part are made by weight part, it is characterized in that described warm mix flame-retardant properties-correcting agent is made by following component and parts by weight thereof:
Decabromodiphenyl oxide 4-7 part;
Antimonous oxide is 2-5 part;
Hydrated magnesium silicate 5-8 part;
Smoke-inhibiting flame retardant auxiliary agent 5-15 part;
Organic viscosity-depression agent 1-4 part.
2. warm mix flame-retardant modified asphalt as claimed in claim 1 is characterized in that, described polymer modified asphalt is by matrix pitch 85-95 part, properties-correcting agent 1-5 part, and blender 1-5 part, stablizer 1-3 part is made, and above umber all is weight parts.
3. warm mix flame-retardant modified asphalt as claimed in claim 2 is characterized in that, described pitch is a kind of or its combination of 110# matrix pitch, 130# matrix pitch, 140# matrix pitch.
4. warm mix flame-retardant modified asphalt as claimed in claim 2 is characterized in that described properties-correcting agent is selected styrene-butadiene rubber(SBR) for use.
5. warm mix flame-retardant modified asphalt as claimed in claim 2 is characterized in that, described blender is selected the extraction oil that is rich in aromatic hydrocarbons, a kind of or its combination of rubber oil for use.
6. warm mix flame-retardant modified asphalt as claimed in claim 2 is characterized in that, described stablizer is selected sulphur class stablizer for use.
7. warm mix flame-retardant modified asphalt as claimed in claim 1 is characterized in that, a kind of or its combination of described smoke-inhibiting flame retardant selection of auxiliary silicon-dioxide, ferric oxide, calcium oxide.
8. warm mix flame-retardant modified asphalt as claimed in claim 1 is characterized in that, described organic viscosity-depression agent is selected warm-mixing agent EC-120 for use.
9. the preparation method as the arbitrary described warm mix flame-retardant modified asphalt of claim 1-8 is characterized in that, comprises the steps:
A, molten polymer modifying asphalt: with weight part is that the polymer modified asphalt of 70-95 part is heated to 100-120 ℃, reaches molten state, stirs 10-20min and makes its dehydration, and then be heated and remain on 140-150 ℃;
B, be that the warm mix flame-retardant properties-correcting agent of 10-20 part joins in the polymer modified asphalt of steps A gained with weight part, stir while adding, churning time is 30-40min, and the temperature of polymer modified asphalt is controlled at 140-150 ℃ in the adition process, makes warm mix flame-retardant modified asphalt at last.
10. the preparation method of warm mix flame-retardant modified asphalt as claimed in claim 9 is characterized in that, the addition sequence of warm mix flame-retardant properties-correcting agent is followed successively by organic viscosity-depression agent, decabromodiphenyl mystery, antimonous oxide, hydrated magnesium silicate, smoke-inhibiting flame retardant auxiliary agent among the step B.
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| CN102680517A (en) * | 2011-03-09 | 2012-09-19 | 同济大学 | Method for testing oxygen index of flame-retardant modified asphalt |
| CN103044937A (en) * | 2013-01-12 | 2013-04-17 | 天津市市政工程设计研究院 | Flame-retardant smoke-suspension asphalt for environment-friendly road and preparation method of asphalt |
| CN103554932A (en) * | 2013-10-17 | 2014-02-05 | 王朝辉 | Modified asphalt with flame retardance and hot-mix emission reduction functions |
| CN103911007A (en) * | 2014-03-04 | 2014-07-09 | 山西省交通科学研究院 | Safe and environment-friendly asphalt for road and preparation method thereof |
| CN107140880A (en) * | 2016-03-01 | 2017-09-08 | 深圳海川新材料科技有限公司 | A kind of warm mix SMA asphalts and preparation method thereof |
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| CN108148420A (en) * | 2017-11-09 | 2018-06-12 | 广西桂东高速公路有限公司 | Modified compound flame retardant, efficient warm mix flame-retardant pitch and preparation method thereof |
| CN108659552A (en) * | 2017-03-31 | 2018-10-16 | 中国石油化工股份有限公司 | A kind of environmental protection warm-mixed asphalt and preparation method thereof |
| CN108659553A (en) * | 2017-03-31 | 2018-10-16 | 中国石油化工股份有限公司 | Asphalt flame-retardant thinner and preparation method thereof |
| CN108659554A (en) * | 2017-03-31 | 2018-10-16 | 中国石油化工股份有限公司 | Fire-retardant low viscosity rubber pitch and preparation method thereof |
| CN111440454A (en) * | 2020-01-20 | 2020-07-24 | 北京建筑大学 | Warm-mixed odorless smoke-suppressing asphalt and preparation method thereof |
| CN112811854A (en) * | 2021-01-13 | 2021-05-18 | 武汉理工大学 | Flame-retardant warm-mixing induction heating self-healing asphalt concrete and preparation method thereof |
| CN113136058A (en) * | 2021-04-28 | 2021-07-20 | 株洲时代新材料科技股份有限公司 | Composite flame retardant, flame-retardant damping rubber with excellent comprehensive performance and preparation method thereof |
| CN113604059A (en) * | 2020-12-28 | 2021-11-05 | 武汉理工大学 | Flame-retardant warm-mix modified asphalt and preparation method and application thereof |
| CN113603394A (en) * | 2020-12-28 | 2021-11-05 | 武汉理工大学 | Flame-retardant warm-mixing self-healing asphalt concrete and preparation method and application thereof |
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| CN102680517A (en) * | 2011-03-09 | 2012-09-19 | 同济大学 | Method for testing oxygen index of flame-retardant modified asphalt |
| CN103044937A (en) * | 2013-01-12 | 2013-04-17 | 天津市市政工程设计研究院 | Flame-retardant smoke-suspension asphalt for environment-friendly road and preparation method of asphalt |
| 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 |
| CN103911007A (en) * | 2014-03-04 | 2014-07-09 | 山西省交通科学研究院 | Safe and environment-friendly asphalt for road and preparation method thereof |
| CN103911007B (en) * | 2014-03-04 | 2016-03-02 | 山西省交通科学研究院 | A kind of safe environment protection type bitumen for road use and preparation method thereof |
| CN107140880A (en) * | 2016-03-01 | 2017-09-08 | 深圳海川新材料科技有限公司 | A kind of warm mix SMA asphalts and preparation method thereof |
| CN108659553A (en) * | 2017-03-31 | 2018-10-16 | 中国石油化工股份有限公司 | Asphalt flame-retardant thinner and preparation method thereof |
| CN108659554B (en) * | 2017-03-31 | 2021-10-22 | 中国石油化工股份有限公司 | Flame-retardant low-viscosity rubber asphalt and preparation method thereof |
| CN108659552A (en) * | 2017-03-31 | 2018-10-16 | 中国石油化工股份有限公司 | A kind of environmental protection warm-mixed asphalt and preparation method thereof |
| CN108659552B (en) * | 2017-03-31 | 2021-10-22 | 中国石油化工股份有限公司 | Environment-friendly heat-insulating mixed asphalt and preparation method thereof |
| CN108659554A (en) * | 2017-03-31 | 2018-10-16 | 中国石油化工股份有限公司 | Fire-retardant low viscosity rubber pitch and preparation method thereof |
| CN108148420A (en) * | 2017-11-09 | 2018-06-12 | 广西桂东高速公路有限公司 | Modified compound flame retardant, efficient warm mix flame-retardant pitch and preparation method thereof |
| CN107987541B (en) * | 2017-12-11 | 2020-04-24 | 山西省交通科学研究院 | Bio-based flame-retardant modified asphalt and preparation method thereof |
| CN107987541A (en) * | 2017-12-11 | 2018-05-04 | 山西省交通科学研究院 | A kind of bio-based fire-retardant modified asphalt and preparation method thereof |
| CN111440454A (en) * | 2020-01-20 | 2020-07-24 | 北京建筑大学 | Warm-mixed odorless smoke-suppressing asphalt and preparation method thereof |
| CN113604059A (en) * | 2020-12-28 | 2021-11-05 | 武汉理工大学 | Flame-retardant warm-mix modified asphalt and preparation method and application thereof |
| CN113603394A (en) * | 2020-12-28 | 2021-11-05 | 武汉理工大学 | Flame-retardant warm-mixing self-healing asphalt concrete and preparation method and application thereof |
| CN113603394B (en) * | 2020-12-28 | 2022-08-05 | 武汉理工大学 | Flame-retardant warm-mixing self-healing asphalt concrete and preparation method and application thereof |
| CN112811854A (en) * | 2021-01-13 | 2021-05-18 | 武汉理工大学 | Flame-retardant warm-mixing induction heating self-healing asphalt concrete and preparation method thereof |
| CN113136058A (en) * | 2021-04-28 | 2021-07-20 | 株洲时代新材料科技股份有限公司 | Composite flame retardant, flame-retardant damping rubber with excellent comprehensive performance and preparation method thereof |
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