CN101089049B - Waste rubber tyre powder modified asphalt and its preparation process - Google Patents
Waste rubber tyre powder modified asphalt and its preparation process Download PDFInfo
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- CN101089049B CN101089049B CN2006100276765A CN200610027676A CN101089049B CN 101089049 B CN101089049 B CN 101089049B CN 2006100276765 A CN2006100276765 A CN 2006100276765A CN 200610027676 A CN200610027676 A CN 200610027676A CN 101089049 B CN101089049 B CN 101089049B
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Abstract
The present invention relates to one kind of waste rubber tyre powder modified asphalt and its preparation process. The waste rubber tyre powder modified asphalt consists of asphalt matrix 100 weight portions, waste rubber tyre powder 10-30 weight portions, compatilizer 1-10 weight portions, dissolution promoter 0.5-30 weight portions, activating modifier 1-40 weight portions and emulsifier 0-5 weight portions. It is prepared through a chemical and physical process including the steps of degrading and activating the waste rubber tyre powder, vulcanizing and cross-linking, stirring and shearing. It is suitable for paving and repairing highway.
Description
Technical field
The present invention proposes a kind of main by composite modified pitch of waste tyre rubber powder and preparation method thereof, belongs to the asphalt modification technical field.
Technical background;
Junked tire is called " black pollution " its recovery and treatment technology is a global problem.At present the whole world has 1,500,000,000 tires to scrap every year, and its Middle and North America accounts for 400,000,000,400,000,000 in West Europe, 100,000,000 in Japan, 1.2 hundred million in China, (expecting 2010 200000000), so extensive junked tire will bring huge environmental stress to society.
Process rubber powder by junked tire; Its main chemical compositions is tree elastomer and viton; Also have added ingredientss such as sulphur, carbon black, silicon oxide, red stone in addition; Yet above these compositions all are the good properties-correcting agent of bituminous, can improve pitch high and low temperature performance, ageing resistance, anti-fatigue performance, play effects such as attenuate road surface, prolongation service life of road surface, delayed reflex crack, reduction tire/road rumble.
Waste tire rubber is joined pitch or asphalt starts from the U.S., and the mid-1960s Charles Mcdonald (father of rubber asphalt) begins to develop asphalt by modification of waste tyre rubber powder (Overflex
TM) work, the rubber powder first Application is in stress absorbing layer (SAM) simultaneously.Rubber asphalt in 1975 is used for upgrading first and joins hot-mix asphalt mixture.The concise company in the Arizona seventies releases desulfurization asphalt by modification of waste tyre rubber powder (Arm-R-Shield again
TM) work.
After patent lost efficacy in 1993, rubber asphalt began comprehensive high speed development.Under the pressure of old tire pressure; US Congress was through land comprehensive transportation economics bill (ISTEA in 1991; Claim the iced tea method again), rubber asphalt, wherein Arizona State, California, Florida State, E Legang state are used in existing so far 38 states; Mostly adopt wet processing, and existing full-quality standard foundation, design and instruction manual.So far the U.S. has 11X10
3The KM high-grade highway adopts rubber powder modified asphalt, and South Africa 60% above road uses rubber asphalt, and other also have states such as France, Sweden, Japan, Canada, Britain, Germany, Belgium, Brazil all contribution to be made in rubber asphalt research and application.
With abroad compare, domestic research and application relatively lag behind, and mainly contain 3 reasons: 1. homemade most rubber powder wax contents are high, and performance is bad, are not suitable for modification, asphalt modifier is deficient; 2. use the supporting technology of rubber powder modified asphalt and market condition immature on a large scale, just release normal temperature method rubber powder production line in recent years; When 3. starting Chinese motorway the end of the eighties, the technology/equipment of introduction and the example of accomplishing are main with polymer modified asphalts such as SBS/PE all the time.Up to 2001 ~ 2003 years, western transport development science and technology item " technical study that waste rubber powder is used to build the road " was born in unit cooperations such as highway institute of The Ministry of Communications and Tongji University, Shandong Province Science Institute.Carry out experimental study just now comprehensively, tentatively proposed the rubber modified asphalt technological standard, rubber-asphalt mixture method of design and technological standard, and accomplished nearly 30 kilometers test roads of length overall and entity project.Different tests and practice have all been done in this field by other R&D institutions, enterprise such as Beijing Municipal Engineering Design and Research Institute, Tianjin Highway Administration Bureau, Beijing Highways Department, Xinye Industry & Trade Development Co., Ltd., Tianjin, development in science and technology ltd of Guangzhou gold nation, Sanxin Highway Engineering Co., Ltd., Shenyang, Liaoming Petrochemical Univ, contribute with improving for promoting this development of technology.
China steps into the expressway construction field from the end of the eighties, and polymer modified asphalt especially SBS modifying asphalt occupies dominant position all the time.In recent years, because oil price soars all the way, the SBS valency has reached more than 2.3 ten thousand yuan/ton, and resource problem, environmental issue have become the bottleneck that continues Economic development.The recovery of junked tire and utilization have risen to the height of recycling economy at present, are listed as the field of giving priority to, and in view of such background and external a large amount of successful examples, make rubber powder modified asphalt be pulled to agenda.
But carry out this respect work in China, still have developing rubber powder resource, framework industry technology standards system and solve concrete key technical problem three big tasks, wherein relatively more outstanding technical problem is following:
1. rubber powder modified asphalt remains intermediates in whole road engineering, obey the examination requirement of final road, and protobitumen and general modifying asphalt index system also not exclusively are fit to.For example viscosity, ductility and aging index have different annotations in these three types of pitches.Even only as far as rubber powder modified asphalt, because process method has the branch of physics and chemistry, the quantification of same index also has bigger difference.Therefore be the problem that at first will solve with reference to external related prods metric hierarchy product technology standards system;
2. big quantity research is verified with experiment both at home and abroad; Adopting chemical modification (CRMA) is that main means are cut into main rubber powder modified asphalt than simple physics and on product index, have a clear superiority in; Comprising temperature applicable range, segregation degree, recovery of elasticity, solubleness, ductility and viscosity, wherein have a clear superiority on recovery of elasticity, anti-segregation and the solubleness.Being main properties-correcting agent with rubber powder simultaneously, mixing a small amount of other polymer modifiers, also is method commonly used in the world.Therefore, confirm that technological line is second prerequisite of dealing with problems.
3. rubber powder modified asphalt is a very complex system; It is numerous to influence its performance factor; Like asphalt variety, rubber powder working method, source, rubber powder particle diameter, phase solvent, additive and stabiliser content, kind, addition manner and modifying asphalt mixing equipment type, velocity of shear, mixing time, temperature or the like, none does not influence the rubber powder modified asphalt performance these factors.Add various phase solvents and additive etc. and can improve asphalt performance, but have an optimum content.Therefore optimization of C, optimization processing parameter are that this also is that same field can form different distinguishing products major causes in the problem of laboratory stage and necessary solution in the production phase.
4. since rubber powder modified asphalt have dry/wet branch, the branch of situ production/plant produced is arranged; In order to adapt to the different user requirement; The dependence of artificial skill level, equipment are gone up to be considered to adopt the advanced manufacturing industry notion as far as possible in order to reduce quality product, be i.e. back construction technology problems such as the mechatronics device that will mention of literary composition, palletization.
Summary of the invention
To the demand of domestic and international market and the outwardness of problem, the objective of the invention is: be intended to develop a kind of appts of modified asphalt by utilizing waste tyre rubber powder and preparation method thereof.
Design of the present invention is:
1. utilize rubber in the non-rubber powder, vulcanizing agent, vulcanization accelerator, weighting material, softening agent etc. total composition.
2. in the process that rubber powder and pitch mix mutually, manage to make the rubber powder grain that desulfurization and depolymerization reaction can take place, and then micelle is diminished, in being dissolved in pitch, the bituminous rheological is changed, even pitch becomes sticky.
3. radical and the carboxylic acid and other functional groups that make fusion be scattered in the vulcanized rubber powder in the pitch have an effect, and pitch and rubber powder consistency are strengthened.To strengthen the stability of rubber powder～pitch system, prevent that the layering of rubber powder～pitch system from resolving.
4. earlier rubber powder modified is processed asphalt modifier, handle the efficient of processing to improve the core material.
5. the asphalt modifier that will contain rubber powder is processed the asphalt modification masterbatch, and manages to make two intervals up and down that differ greatly that are of rubber powder content in the masterbatch, so that downstream have bigger combination and variation scope when using.
Design specifically of the present invention is achieved in that
(1) invent a kind of junked tire modifying asphalt that provides, its component comprises by weight:
With pitch 100 is benchmark part,
10～30 parts of waste-tyre rubber-powders;
1～10 part of compatilizer;
0.5～30 part of chaotropic agent;
1～40 part of activation modifier;
0～5 part of emulsifying agent;
The combination of one or more in the pitch that described matrix pitch includes but not limited to be described below: heavy oil asphalt, mediation pitch, straight-run pitch and vacuum residuum;
Described compatilizer one or more the combination in the compatilizer that includes but not limited to be described below: ethane-acetic acid ethyenyl resin copolymer (EVA); Polyolefine and styrene butadiene one vinylbenzene (SBS);
Described chaotropic agent includes but not limited to the combination of one or more chaotropic agents in following short the dissolving: furfural extract oil, deasphalted oil, fragrance divide oil or subtract interior lines cut, Yatall MA etc.;
Described activation modifier includes but not limited to one or more the combination in the following activation modifier: methylacrylic acid and salt thereof, Racemic glycidol fat, thanomin and salt, Zinic stearas, Triple Pressed Stearic Acid etc.;
Described waste-tyre rubber-powder includes but not limited to a kind of or a kind of above combination in the following rubber powder: bias tyre, radial, bicycle tyre, hand cart tyre;
Described emulsifying agent comprise but the emulsifying agent that is not limited to be described below in one or more combination: non-ionics, aniorfic surfactant.
Described pitch is even more preferably: viscous crude and title complex thereof;
Described compatilizer is even more preferably: the SBS and the compound that is mixed thereof, consumption are 1～10 weight part;
Described chaotropic agent is even more preferably: furfural extract oil and title complex thereof, consumption are 0.5～30 weight part;
Said activation modifier preferable methyl vinylformic acid and salt thereof or Racemic glycidol fat, consumption 1～40 weight part;
The preferred oblique tire of said waste-tyre rubber-powder or meridian and title complex thereof, consumption 10～30 weight parts;
Described emulsifying agent preferred anionic type tensio-active agent, consumption 0.1～2 weight part;
(2) preparation method of asphalt by modification of waste tyre rubber powder according to the invention, comprising: A makes properties-correcting agent with rubber powder masterbatch; B uses modifier modification pitch; Properties-correcting agent can be used as stand-alone product.
Described preparation method comprises one or more the combination of adopting in the following physical method; They are stirring, triode line formula high speed shear and combined type stirring/shearing;
Described preparation method comprises one or more combinations in the following chemical process; They are rubber powder degraded activation, and vulcanization crosslinking adds softening agent, stablizer, protective agent or chaotropic agent;
Said rubber powder modified method comprises one or more combinations in the following chemical process means: chemical mechanical pulping, graft modification method, softening agent modification method etc.All activation purposes generate new reactive group in order to make vulcanized rubber powder, improve crosslinking degree.
Described properties-correcting agent comprises following one or more combination: like waste rubber tyre powder, and polymkeric substance and various vulcanizing agent or vulcanization accelerator;
The preparation of chemistry of the present invention or physical method shoddy modified pavement asphalt may further comprise the steps:
Select shoddy 20-60 order for use.With activation modifier, chaotropic agent, sulphur and phase solvent.The consumption that makes shoddy by a certain percentage is the 10-30 parts by weight of asphalt content; Insulation is 10-120 minute under 100-200 ℃ of temperature, adds temperature then to and is in 160-180 ℃ the hot-melt asphalt, and stirring velocity 1500-8000 changes; Stirred 10-40 minute, and made road modified asphalt.
Described activation modifier comprises: methylacrylic acid and salt thereof, and glycidyl ester, thanomin and salt thereof, Zinic stearas, Triple Pressed Stearic Acid etc., preferable methyl vinylformic acid and glycidyl ester, its consumption are 0.1-40 part parts by weight of asphalt content.
Described chaotropic agent comprises: furfural extract oil, deasphalted oil, fragrance divide oil or subtract four line cuts, Yatall MA etc.Preferred furfural extract oil, its consumption is the 0.5-30 parts by weight of asphalt content.Described phase solvent comprises: vinyl-vinyl acetate copolymer (EVA), and polyolefine or styrene-butadiene-styrene (SBS), preferred SBS, its consumption is 1-10 part.
Described waste rubber tyre powder meets the preparation method of the properties-correcting agent of modifying asphalt requirement; Preparation process such as Fig. 1 of properties-correcting agent are: acvator, chaotropic agent rubber powder, rubber powder and other chaotropic agents are squeezed into modification liquid blend tank with pump, 140-160 ℃ of modified-reaction temperature in metering system metering back separately; The residence time 1.5～2h adopts the mode continuously stirring of combination shearing or is interrupted stirring in preparation mother liquor process.The mother liquor that reacts completely is directly squeezed into properties-correcting agent finished product jar by pump after filtering through filter sieve.
Preparation process such as Fig. 2 that described waste rubber tyre powder meets the properties-correcting agent of modifying asphalt requirement are: the matrix pitch that from the matrix pitch jar, comes is earlier through squeezing into material-compound tank with pump after filter sieve and the heat exchanger heat exchange; Asphalt modifier and stablizer, properties-correcting agent and other compositions also get into material-compound tank, 160 ℃ of material-compound tank temperature, residence time 20min after through metering system simultaneously.Squeeze into pitch swelling jar respectively from the intermediate product that material-compound tank comes out, pitch swelling jar adopts whisking appliance to stir 180-200 ℃ of swelling temperature, residence time 20-30min.The intermediate product that swelling is good is sheared the back through being the modifying asphalt finished product behind the surge tank through high-speed shearing machine.
(3) major equipment of the present invention's use contains general and specific equipment
● general-purpose equipment is mainly heat conducting oil boiler, matrix pitch, properties-correcting agent and finished product storage tank and relevant metering, detection and communications service;
● specific equipment mainly is made up of the modifying asphalt specific equipment, comprising triode line high-speed shearing machine, stirrer, feed proportioning system, intermediate reactor and relevant electromechanical integration dedicated control system (containing software).
(4) sign of modifying asphalt goods
The asphalt rubber technological standard is the core of whole technique guide, and in each guide, though stipulate difference to some extent, its core index is penetration degree (cone penetration), softening temperature, recovery of elasticity and viscosity.
ASTM/FHWA and Arizona State technological standard according to different climatic regions, are divided into third gear with rubber asphalt, are applicable to hot-zone, warm area and Han Qu respectively.
FHWA in 1992, the ASTM standard was carried out classification with penetration degree in 1997; The Arizona State is according to the matrix pitch classification, and its index has only a viscosity, classifies by the rubber powder volume in the Florida State, and California, Dezhou, South Africa standard do not have classification.
The FHWA technical requirements is 92 years versions, and its index proposes on the plain asphalt basis.Softening temperature, recovery of elasticity index are lower, provide the ductility index, do not have the viscosity index.
The Arizona is close with the ASTM standard.About only FHWA and the ASTM proposition of aging index, so asphalt rubber is not having problems aspect aging.
Concerning plain asphalt and general modifying asphalt, viscosity is just as the construction workability controlling index, in the therefore general modifying asphalt index system; Only limit the viscosity peak, like 135 ℃ of viscositys of 98 year traffic portion highway Modified Bitumen Pavement construction technique normalizings (JTJ036-98), max3paS; And in note, specify; As do not influence the modifying asphalt physical properties, and meet and be prone under the safety condition temperature give and mix and stir, may not request mensuration.
But to rubber powder modified asphalt, viscosity is quality index, the key index of control, and viscosity adopts the rotation viscosity; The viscosity scope is generally in 1～5paS; 175～180 ℃ of the TRs that viscosity is measured when viscosity does not meet the demands, should adopt the increase rubber powder; Reduce temperature of reaction, increase measures such as reaction times.
Because rubber powder granule exists, ductility is measured influenced, and it is wide and neat to break fracture, and except that early stage FHWA had the low-temperature ductility index, other standards did not all have.
This shows that rubber powder bituminous leading indicator is viscosity, penetration degree, softening temperature, recovery of elasticity and aging accordingly index (seeing table 1)
Highway house of table 1 The Ministry of Communications rubber asphalt technical indicator (1) and modifying asphalt provided by the invention (2) detect the data contrast
Table 1 explanation rubber powder modified asphalt index provided by the invention has covered comprehensively and has been superior to the rubber modified asphalt technical indicator of highway institute of The Ministry of Communications proposition; Also can see simultaneously from table 2; The 92 years FHWA of the U.S. (Federal Highway management general administration) that compare release index and 97 years ASTM (materials association) index is proposed, it is on the low side similar basically that Highway house of The Ministry of Communications index is removed softening temperature.And the recovery of elasticity index is apparently higher than U.S.'s index, because two state's ductility measuring methods are different, Chinese in fact ductility index is superior to U.S.'s index.Aging back index the other side is not listed as, and explains owing in the rubber powder carbon black and so on protective agent is arranged, and has not had this problem.
Table 2 rubber powder modified asphalt technical indicator relatively
In sum, technique effect of the present invention is very obvious:
(1) sample of producing according to prescription provided by the present invention and technology has entrusted take the lead institutes-Shanghai Tongji University road and traffic engineering institute of road and engineering discipline to carry out the product technology Performance Detection; Meet Highway house of The Ministry of Communications fully in view of the western transport development science and technology item that passes through through the expert proposes the rubber powder modified asphalt index, also meet current in the world U.S. FHWA (national Speedway Control Broad) and ASTM (materialogy meeting) the like product index system that proposes.Be applicable to road paving, processing and the repairing homologous series modifying asphalt of various grades, also be applicable to waterproof rolls such as making roofing, indoor health, vault.
(2) general polymerization thing modifying asphalt and rubber powder modified asphalt difference
General polymerization thing modifying asphalt belongs to petrochemicals like SBS, and is soaring with oil price; 2.2 ten thousand yuan/ton have been reached; And 2000～2700 yuan/ton of rubber powder price (20～80 order) average prices are compared matrix pitch (3500～4000 yuan/ton), and its economic and social benefit is clearly.
See that from technical indicator following 3 differences are arranged:
※ rubber powder key index is a viscosity, ensures by mixing rubber powder ratio and processing condition, and it is the concrete physical significance of existence down, and general polymerization thing modifying asphalt viscosity is only established the upper limit, satisfies construction and related request.Do not set mark, though the two under identical viscosity, the construction complexity differ fully.
※ rubber powder carbon black and other protective agents, anti-aging index only have concrete meaning to general polymerization thing modifying asphalt.
※ is because rubber powder granule exists, and ductility is measured influenced, except that FHWA, does not establish index abroad, and same penetration measurement is also influenced, and some standard has made cone penetration into, and physical significance is identical.
※ contrast softening temperature and recovery of elasticity index are similar basically.
(3) chemical modification/physically modified contrast
Adopting chemical modification (CRMA) is that main means are compared and adopted simple physics to be cut into main rubber powder modified asphalt aspect seven, to have superiority; Comprise widen temperature applicable range, prevent segregation, recovery of elasticity, solubleness, ductility and viscosity, wherein recovery of elasticity has a clear superiority in anti-segregation and solubleness.It is that primary physical is modified as auxilliary technological line that the present invention adopts chemical modification.
Description of drawings
Fig. 1 modification liquid preparing process schematic flow sheet
Fig. 2 modifying asphalt preparation technology schema
Among the figure:
1, acvator, 2, chaotropic agent, 3, the acvator metering system, 4, the chaotropic agent metering system, 5, the rubber powder metering system; 6, other chaotropic agent metering systems, 7, modification liquid combination shearing blend tank, 8, filter sieve, 9, return valve, 10, pump; 11, properties-correcting agent finished product jar, 12, the matrix pitch jar, 13, heat transfer oil heater, 14, heat exchanger, 16, asphalt modifier jar 17, stablizer, properties-correcting agent and other; 18, material-compound tank, 19, pitch swelling jar, 20, high-speed shearing machine (triode line formula emulsification pump, emulsified bitumen), 21, surge tank; 22, modifying asphalt finished product jar, 23, vacuum breaker, 24, whisking appliance, 25, canning cart.
Embodiment
Below in conjunction with embodiment, further specifying design of the present invention, but these embodiment should not looked
Work is to the restriction of protection domain of the present invention.
Embodiment 1:
A kind of preparation of chemical physics method shoddy modified pavement asphalt may further comprise the steps: select shoddy 20-60 order for use.With activation modifier, chaotropic agent, sulphur and compatilizer.The consumption that makes shoddy by a certain percentage is the 10-30 parts by weight of asphalt content; Insulation is 10-120 minute under 100-200 ℃ of temperature, adds temperature then to and is in 160-180 ℃ the hot-melt asphalt, and stirring velocity 1500-8000 changes; Stirred 10-40 minute, and made road modified asphalt.
Described activation modifier comprises: methylacrylic acid and salt thereof, and glycidyl ester, thanomin and salt thereof, Zinic stearas, Triple Pressed Stearic Acid etc., preferable methyl vinylformic acid and glycidyl ester, its consumption are 0.1-40 part parts by weight of asphalt content,
Described chaotropic agent comprises: furfural extract oil, deasphalted oil, fragrance divide oil or subtract four line cuts, Yatall MA etc.Preferred furfural extract oil, its consumption is the 0.5-30 parts by weight of asphalt content.
Described phase solvent comprises: vinyl-vinyl acetate copolymer (EVA), and polyolefine or styrene-butadiene-styrene (SBS), preferred SBS, its consumption is 1-10 part.
Embodiment 2:
Described waste rubber tyre powder meets the preparation method of the properties-correcting agent of modifying asphalt requirement; Preparation process such as Fig. 1 of properties-correcting agent are: acvator 1, chaotropic agent rubber powder 2, rubber powder and other chaotropic agents are squeezed into modification liquid blend tank with pump, 140-160 ℃ of modified-reaction temperature in metering system 5,6 metering backs separately; The residence time 1.5～2h adopts the mode continuously stirring of combination shearing or is interrupted stirring in preparation mother liquor process.The mother liquor that reacts completely is directly squeezed into properties-correcting agent finished product jar 16 by pump 10 after filtering through filter sieve 8;
The preparation of embodiment 3 usefulness modifier modification bituminous, preparation process such as Fig. 2 are: the matrix pitch that from matrix pitch jar 12, comes is earlier through squeezing into material-compound tank (8) with pump 8 after filter sieve 8 and the heat exchanger heat exchange; Asphalt modifier 16 also gets into material-compound tank, 160 ℃ of the temperature of material-compound tank, residence time 20min with stablizer, properties-correcting agent and other compositions 17 after through metering system.Squeeze into pitch swelling jar 19 respectively from the intermediate product that material-compound tank comes out, pitch swelling jar adopts whisking appliance 24 to stir 180-200 ℃ of swelling temperature, residence time 20-30min.The intermediate product that swelling is good is sheared the back through being the modifying asphalt finished product behind the surge tank 21 through high-speed shearing machine 11.
Claims (7)
1. the preparation method of a waste rubber tyre powder modified asphalt; It is characterized in that preparation process is: select 20-60 order waste-tyre rubber-powder for use, activation modifier, chaotropic agent and compatilizer are pressed certain component with chemical and the physical method realization; Insulation is 10-120 minute under 100-200 ℃ of temperature; Add temperature then to and be in 160-180 ℃ the hot melt matrix pitch, stirring velocity is 1500-8000 rev/min, stirs 10-40 minute;
Wherein, 1. described physical method is the combination of following one or more: stir, triode line formula high speed shear or combined type stirring/shearing;
2. said chemical process is following one or more combination: rubber powder degraded activation, vulcanization crosslinking, interpolation softening agent, stablizer, protective agent or chaotropic agent;
3. its component is 100 parts of matrix pitches, waste-tyre rubber-powder 10-30 part, compatilizer 1-10 part, chaotropic agent 0.5-30 part, activation modifier 1-40 part, emulsifying agent 0-5 part by weight.
2. by the described preparation method of claim 1, it is characterized in that the modification of waste-tyre rubber-powder comprises chemical mechanical pulping, graft modification or softening agent method of modifying.
3. by the described preparation method of claim 1; It is characterized in that as the preparation of the rubber powder masterbatch of properties-correcting agent being: with activation modifier, chaotropic agent rubber powder, waste-tyre rubber-powder at separately metering system; Gentle jar of modification liquid, 140-160 ℃ of modified-reaction temperature are squeezed into pump in the metering back; Residence time 1.5-2h adopts the mode continuously stirring of combination shearing or is interrupted stirring in preparation mother liquor process; The mother liquor that reacts completely is directly squeezed into properties-correcting agent finished product jar by pump after filtering through filter sieve.
4. by the described preparation method of claim 1, the preparation method who it is characterized in that used modifier modification bitumen base squeezes into material-compound tank with pump after the matrix pitch from the matrix pitch jar passes through filter sieve and heat exchanger heat exchange earlier; Asphalt modifier and stablizer also get into material-compound tank after through metering system, 160 ℃ of the temperature of material-compound tank, residence time 20min; Squeeze into pitch swelling jar respectively from the intermediate product that material-compound tank comes out; Pitch swelling jar adopts whisking appliance (24) to stir; 180-200 ℃ of swelling temperature, residence time 20-30min, the intermediate product that swelling is good is sheared the back through being the modifying asphalt finished product behind the surge tank through high-speed shearing machine (11).
5. by the described preparation method of claim 1, it is characterized in that:
(a) said matrix pitch comprises one or more the combination in the pitch that is described below: heavy oil asphalt, be in harmonious proportion pitch, straight-run pitch or vacuum residuum;
(b) said compatilizer comprises one or more the combination in the compatilizer that is described below: the ethane-acetic acid ethyenyl resin copolymer; Polyolefine and styrene butadiene-ethene;
(c) said chaotropic agent comprises the combination of one or more chaotropic agents in following short the dissolving: furfural extract oil, deasphalted oil, fragrance divide oil or subtract four line cut or Yatall MAs;
(d) said activation modifier comprises one or more the combination in the following activation modifier: Racemic glycidol fat, thanomin and salt, Zinic stearas or Triple Pressed Stearic Acid;
(e) said waste-tyre rubber-powder comprises one or more the combination in the following rubber powder: discarded bias tyre, radial or hand cart tyre;
(f) said emulsifying agent comprise the emulsifying agent that is described below in one or more combination: non-ionics or aniorfic surfactant.
6. the preparation method who states by claim 5 is characterized in that:
(a) described matrix pitch is a heavy oil asphalt;
(b) described compatilizer is a styrene-butadiene-styrene;
(c) said chaotropic agent is a furfural oil;
(d) said activation modifier is a Racemic glycidol fat;
(e) said waste-tyre rubber-powder is discarded oblique tire or meridian;
(f) said emulsifying agent is an aniorfic surfactant.
7. by claim 5 or 6 described preparing methods, it is characterized in that said emulsifying agent is 0.1-2 part.
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