CN106317371B - A method of preparing polyurethane based on castor oil modified pitch and its mixture - Google Patents
A method of preparing polyurethane based on castor oil modified pitch and its mixture Download PDFInfo
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- CN106317371B CN106317371B CN201510359604.XA CN201510359604A CN106317371B CN 106317371 B CN106317371 B CN 106317371B CN 201510359604 A CN201510359604 A CN 201510359604A CN 106317371 B CN106317371 B CN 106317371B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/36—Hydroxylated esters of higher fatty acids
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a kind of polyurethane based on castor oil process for preparing modified asphalt: 1) preparation contains oil asphalt: castor oil is slowly added into matrix pitch；2) preparation of modified pitch: the polymerization reaction of polymerization inhibitor control asphalt system is added to oil-containing asphalt system, then liquefied mdi is added dropwise to system, two monomer additive amounts are 10~30%.Method proposed by the present invention, due to being first to be made in asphalt system containing oil asphalt, by the way that liquefaction MDI component is slowly added dropwise into system, effectively reduce the contact level of intimate of two monomers, extent of reaction has been buffered, in the absence of a solvent, has been effectively retained the elastic component of pitch, it is big to solve polymerization system degree of functionality simultaneously, easily viscose the case where.The modified pitch softening point being prepared with it is higher, and high-temperature behavior is more excellent, and modified asphalt mixture has better intensity, and 60 DEG C of standard Marshall stabilitys reach asphalt code requirement, are able to extend the service life of bituminous pavement.
Description
Technical field
The invention belongs to field of road, and in particular to a kind of synthesis of polyurethane in the asphalt system containing castor oil changes
The method of property pitch and mixture containing the modified pitch.
Background technique
With social progress and rapid economic development, Heavy Traffic amount is consequently increased, fairly large vehicle and
The ratio of overload is more and more, also higher and higher to the quality requirement on modern roadways surface.Ideal Pavement Performance requirement is energy
It bears lower temperature and can prevent from being permanently deformed after bearing load, from this view point, the application of common petroleum pitch
Performance does not adapt to growing traffic intensity, is not able to satisfy the demand of transport comfort.In order to overcome lacking for plain asphalt
Point, both at home and abroad studies asphalt modification, and modified pitch is that modifying agent is added into pitch, makes pitch or asphalt
Performance be improved.In past ten years, polymer modified asphalt (PMB) rapid development in road pavement application.
Also the high temperature performance of matrix pitch, but a generally existing problem can be correspondinglyd increase after polyurethane incorporation pitch,
Polyurethane easily solidifies isolation, is layered and is precipitated in asphalt system, and this requires chemically modified angles to assist effective object
Reason manufacturing process goes to increase the compatibility of pitch and polymer.
The research that polyurethane-modified pitch is made in synthesis of polyurethane in asphalt system is fewer and fewer, Chinese patent CN
102850506 A disclose a kind of preparation method of polyurethane-modified pitch, this method be under conditions of initiator, pitch and
Allyl alcohol is at 80~160 DEG C, and under 0.1~0.4MPa, reaction prepares hydroxyl pitch in 3~6 hours, then with isocyanates 70
It is reacted at~130 DEG C, polyurethane-modified pitch is made in final filtration.Which disclose the reactions in asphalt system to prepare poly- ammonia
Ester modified pitch, still, reaction are reacted under stringent closed nitrogen atmosphere, and reaction condition is severe based on petroleum-based polyols
It carves, complicated, time-consuming, low efficiency, and finally modified pitch obtained is needed to filter and is made, therefore, not fundamentally very well
The consistency problem of ground solution polyurethane and pitch.
Summary of the invention
For the shortcomings in the field, the purpose of the present invention is to provide a kind of closes in the asphalt system containing castor oil
The preparation method of generating polyurethane modified pitch.
Another object of the present invention is to provide the mixtures for containing the polyurethane based on castor oil modified pitch.
Realize the technical solution of above-mentioned purpose of the present invention are as follows:
A method of preparing polyurethane based on castor oil modified pitch, comprising the following steps:
1) preparation contains oil asphalt: matrix pitch dries 3 hours at 135 DEG C, and then at 110~120 DEG C, side sheared edge is to base
It is slowly added to castor oil in matter pitch, shears 40~90min altogether；
2) preparation of modified pitch: the polymerization that 1~3% polymerization inhibitor control asphalt system is added to oil-containing asphalt system is anti-
It answers, calculating two monomer additive amounts by inner blending method is 10~30%, and two monomer is castor oil and liquefied mdi, 115~140
Liquefied mdi is added dropwise at DEG C, the isocyanate index R that liquefied mdi and castor oil react is 1.6~2.0；Sufficiently shearing again after dripping off
20~50min is so that reaction system disperses evenly and stably.
Castor oil belongs to renewable resource, biological degradability is good, does not cause dirt to atmospheric environment as a kind of natural monomers
Dye, it is often more important that, and bitumen compatibility is good, the product characteristics that polymerizes stabilization, is very suitable for doing the addition on high quality road surface
Ingredient.There are three double bond on the unsaturated carbon chains of the length of castor oil, its molecule can be made to become conjugation or non-total by vacuum dehydration
The unsaturated acids structure of yoke, i.e. dehydrated castor oil (DCO).Hydroxyl and liquefied mdi (MDI: two isocyanide of diphenyl methane in molecule
Acid esters) in isocyanate groups occur condensation reaction, form the polyurethane structural functional group of carbamate groups.In pitch body
Can not only occur for the polymerization that castor oil and liquefied mdi are carried out in system, together polymerizeing for hydroxyl in castor oil and liquefied mdi molecule
When castor oil in double bond can also polymerize to a certain extent with component unsaturated in pitch, the modified pitch compatibility finally obtained
Good, high-temperature behavior is more preferable.
Wherein, the castor oil in the step 1) is dehydrated castor oil, is by castor oil at 110~120 DEG C, 0.1MPa is true
2~3h is dehydrated in empty van to be made.
Wherein, in the step 2), polymerization inhibitor is p-methyl benzenesulfonic acid ester, chlorobenzoyl chloride, phosphoric acid, one in dimethyl suflfate
Kind.
Preferably, in the step 2), the preferred additive amount of two monomers is 20~25%；What liquefied mdi and castor oil reacted
Isocyanate index R is 1.6~1.8.
According to the calculation formula of inner blending method, it may be assumed that
The sum of two monomers/(the sum of two monomers+matrix pitch)=20~25%, wherein each plant demand of two monomers presses isocyanic acid
Ester index R is calculated and is obtained.
As one of optimal technical scheme of the present invention, in laboratory conditions, in the step 2), at 115~140 DEG C
Liquefied mdi is added dropwise into reaction vessel dropwise with dropping funel, rate of addition is controlled in 10~15 drops/min.
Under the conditions of commercial scale, metering device can be used and be intermittently added liquefied mdi, divide 2~5 during the reaction
Secondary addition.
The application also proposes the polyurethane based on castor oil modified pitch being prepared in this way.And contain institute of the present invention
State the mixture of polyurethane based on castor oil modified pitch.
A kind of preparation method containing polyurethane based on castor oil modified asphalt mixture, comprising steps of
It preheats and gathers materials at 140~170 DEG C, fine aggregate and coarse aggregate be added and is warming up to 140~170 DEG C and mixes and stirs pot
In, mix is uniform；Any polyurethane based on castor oil modified pitch into middle addition Claims 1 to 5 of gathering materials, mix 90
~180s；
Miberal powder is added into the mixture mixed and continues 90~180s of mix, mix is uniform, hits at 140~150 DEG C
Real molding hits 70~80 times in fact, the test specimen of forming is put into 100 DEG C of baking ovens and is conserved for 24 hours, and room temperature conserves 2~4 days to obtain the final product.
Wherein, the polyurethane based on castor oil modified pitch is 4~6:100 with the mass ratio to gather materials.
Wherein, in the mixture in terms of fine aggregate, coarse aggregate and miberal powder gross mass, fine aggregate mass percent accounts for 40~
60%, coarse aggregate mass percent accounts for 32~52%, and powdered ore quality percentage accounts for 4~8%, wherein fine aggregate is limestone, public
Partial size is referred to as 0.075mm < δ < 4.75mm, and coarse aggregate is basalt, and nominal particle diameter is 4.75mm≤δ, and miberal powder is by fat lime rock
It grinds, nominal particle diameter is δ≤0.075mm；The gradation gathered materials is to meet standard specification for construction and acceptance of highway asphalt pavement
Gradation.
The application of mixture proposed by the present invention.Specifically applying in common road, highway, town road, garden
Area road surface, square road surface pave, repair, in waterproof and grouting treatment.
The beneficial effects of the present invention are:
Polyurethane based on castor oil modified pitch proposed by the present invention, due to being first to be made in asphalt system containing oil asphalt,
Under the physical external force of high speed shear, pitch serves as medium, by the way that liquefaction MDI component is slowly added dropwise into system, is effectively reduced
The contact level of intimate of two monomers, has buffered extent of reaction, has been effectively retained pitch under the action of no any solvent
Elastic component, at the same solve polymerization system easily viscose the case where.The polyurethane based on castor oil modified pitch that it is synthesized is compared with base
Matter pitch high temperature performance makes moderate progress, and especially high-temperature behavior improves obvious.The asphalt 60 being prepared with it
DEG C standard Marshall stability reaches asphalt code requirement, is able to extend the service life of bituminous pavement.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
For castor oil used in embodiment the preparation method comprises the following steps: by castor oil at 120 DEG C, vacuum degree is the vacuum tank of 0.1MPa
Middle dehydration 2h is made.The hydroxyl value of the castor oil is 164mgKOH/g.
Standard GB/T/T4507-1999, GB/ is respectively adopted in the test of modified pitch softening point, ductility in embodiment
T4508-1999 is carried out.
Embodiment 1:
Preparing for polyurethane based on castor oil modified pitch is as follows:
1) preparation contains oil asphalt: matrix pitch dries 3 hours at 135 DEG C, and at 110 DEG C, side sheared edge is to matrix pitch body
In be slowly added to castor oil, shear 40min altogether；
2) polymerization of 1% polymerization inhibitor phosphoric acid control asphalt system the preparation of modified pitch: is added to oil-containing asphalt system
Reaction, calculating two monomer additive amounts by inner blending method is 10%, the calculating formula of inner blending method:
The sum of two monomers/(the sum of two monomers+matrix pitch)=10%
The isocyanate index R for controlling two content of monomer is 1.6.With dropping funel dropwise to reaction vessel at 115 DEG C
The middle liquefied mdi that corresponding amount is added dropwise, rate of addition are controlled in 10 drops/min, drip off again sufficiently shearing 20min so that reaction system
It disperses evenly and stably.Modified pitch three norms test result obtained is that 5 DEG C of ductilities are 5.4cm, and 5 DEG C of softening points are 53 DEG C,
25 DEG C of needle penetrations are 69mm.
Embodiment 2
Preparing for polyurethane based on castor oil modified pitch is as follows:
1) preparation contains oil asphalt: matrix pitch dries 3 hours at 135 DEG C, and at 115 DEG C, side sheared edge is to matrix pitch body
In be slowly added to castor oil, shear 60min altogether；
2) preparation of modified pitch: the polymerization inhibitor p-methyl benzenesulfonic acid ester for being added 2% to oil-containing asphalt system controls pitch body
The polymerization reaction of system, calculating two monomer additive amounts by inner blending method is 20%, and the isocyanate index R of two content of monomer of control is
1.8.The liquefied mdi of corresponding amount is added dropwise into reaction vessel dropwise with dropping funel at 120 DEG C, rate of addition is controlled 12
Drop/min drips off sufficiently shearing 40min again so that reaction system is uniformly dispersed, and modified pitch three norms test result is 5
DEG C ductility is 12.2cm, and 5 DEG C of softening points are 49.6 DEG C, and 25 DEG C of needle penetrations are 88mm.
Embodiment 3
Step 1) is the same as embodiment 2 in the preparation of polyurethane based on castor oil modified pitch；
2) polymerization of 2% polymerization inhibitor phosphoric acid control asphalt system the preparation of modified pitch: is added to oil-containing asphalt system
Reaction, calculating two monomer additive amounts by inner blending method is 25%, and the isocyanate index R of two content of monomer of control is 1.6.120
The liquefied mdi of corresponding amount is added dropwise at DEG C into reaction vessel dropwise with dropping funel, rate of addition is controlled in 12 drops/min, dripped off
Sufficiently shearing 30min is so that reaction system is uniformly dispersed again.Modified pitch three norms test result obtained is that 5 DEG C of ductilities are
11.8cm, 5 DEG C of softening points are 50 DEG C, and 25 DEG C of needle penetrations are 84mm.With the property close with embodiment 2.
Embodiment 4
Preparing for polyurethane based on castor oil modified pitch is as follows:
1) preparation contains oil asphalt: matrix pitch dries 3 hours at 135 DEG C, and at 120 DEG C, side sheared edge is to matrix pitch body
In be slowly added to castor oil, shear 90min altogether；
2) preparation of modified pitch: the polymerization reaction of 3% polymerization inhibitor control asphalt system being added to oil-containing asphalt system,
Calculating two monomer additive amounts by inner blending method is 30%, and the isocyanate index R of two content of monomer of control is 1.8.It is used at 140 DEG C
The liquefied mdi of corresponding amount is added dropwise in dropping funel into reaction vessel dropwise, and rate of addition is controlled in 15 drops/min, drips off again sufficiently
50min is sheared so that reaction system disperses evenly and stably, modified pitch three norms test result is that 5 DEG C of ductilities are 4.8cm,
5 DEG C of softening points are 57.6 DEG C, and 25 DEG C of needle penetrations are 64mm.
The test of 1. polyurethane based on castor oil modified pitch three norms of table
| Embodiment | 5 DEG C of softening points/DEG C | 5 DEG C of ductility/cm | 25 DEG C of needle penetration/mm |
| Embodiment 1 | 53.0 | 5.4 | 69 |
| Embodiment 2 | 49.6 | 12.2 | 88 |
| Embodiment 3 | 50.0 | 11.8 | 84 |
| Embodiment 4 | 57.6 | 4.8 | 64 |
Embodiment 5: the preparation of modified asphalt mixture
Gather materials used in embodiment are as follows: in terms of fine aggregate, coarse aggregate and miberal powder gross mass, fine aggregate mass percent is accounted for
50%, coarse aggregate mass percent accounts for 45%, and powdered ore quality percentage accounts for 5%, wherein fine aggregate is limestone, nominal particle diameter
For 0.075mm < δ < 4.75mm, coarse aggregate is basalt, and nominal particle diameter is 4.75mm≤δ, miberal powder ground by fat lime rock and
At nominal particle diameter is δ≤0.075mm.The gradation gathered materials meets the gradation of standard specification for construction and acceptance of highway asphalt pavement.
Uniform mixing in pot is mixed and stirred into 170 DEG C of the addition of gathering materials of 100 parts of AC-13 gradations, 4.8 parts of implementation is added thereto
The polyurethane-modified pitch of the vegetable oil of example 1, mix is uniform, duration of mixing 90s, and miberal powder is added into the mixture mixed and continues
Mix 90s, mix is uniform, in 140 DEG C of Beat numbers, striking times 75 times.The test specimen of forming is put into 100 DEG C of baking ovens and is supported
For 24 hours, it is 11.66 that room temperature conserves the 60 DEG C of Marshall stabilitys of test in 2 days to shield, flow valuve 4.04.
Embodiment 6: the preparation of modified asphalt mixture
Uniform mixing in pot is mixed and stirred into 165 DEG C of the addition of gathering materials of 100 parts of AC-13 gradations, 4.8 parts of implementation is added thereto
Polyurethane based on castor oil modified pitch prepared by example 2, mix is uniform, and duration of mixing 180s is added into the mixture mixed
Miberal powder continues mix 180s, and mix is uniform, in 145 DEG C of Beat numbers, striking times 75 times.Put the test specimen of forming into 100
It is conserved for 24 hours in DEG C baking oven, it is 10.85 that room temperature, which conserves the 60 DEG C of Marshall stabilitys of test in 3 days, flow valuve 3.69.
Embodiment 7: the preparation of modified asphalt mixture
Uniform mixing in pot is mixed and stirred into 170 DEG C of the addition of gathering materials of 100 parts of AC-13 gradations, 4.8 parts of implementation is added thereto
Polyurethane based on castor oil modified pitch prepared by example 4, mix is uniform, and duration of mixing 180s is added into the mixture mixed
Miberal powder continues mix 180s, and mix is uniform, in 150 DEG C of Beat numbers, striking times 75 times.Put the test specimen of forming into 100
It is conserved for 24 hours in DEG C baking oven, it is 10.73 that room temperature, which conserves the 60 DEG C of Marshall stabilitys of test in 4 days, flow valuve 3.10.
Performance characterization
According to " highway engineering pitch and Asphalt Mixture Experiment regulation (JTG E20-2011) " to embodiment 5-7 vegetable oil
Based polyurethanes modified asphalt mixture carries out conventional Marshall performance comparison test.
2. vegetable oil based polyurethane modified asphalt mixture Marshall performance test of table
| Embodiment | Marshall stability (KN) | Flow valuve (mm) |
| Embodiment 5 | 11.66 | 4.04 |
| Embodiment 6 | 10.85 | 3.69 |
| Embodiment 7 | 10.73 | 3.10 |
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.It will be understood by those skilled in the art that straight from this patent disclosure and common sense
The substitution of export or some deformations or the prior art associated and the equivalent change or modification of feature are connect, can realize this
The function and effect of patent description, category the scope of this patent.
Claims (10)
1. a kind of method for preparing polyurethane based on castor oil modified pitch, which comprises the following steps:
1) preparation contains oil asphalt: matrix pitch dries 3 hours at 135 DEG C, and then at 110~120 DEG C, side sheared edge is dripped to matrix
It is slowly added to castor oil in blueness, shears 40~90min altogether；
2) preparation of modified pitch: the polymerization inhibitor that 1~3% is added into the oil-containing asphalt system that step 1) obtains controls pitch body
The polymerization reaction of system, calculating two monomer additive amounts by inner blending method is 10~30%, according to the calculation formula of inner blending method, it may be assumed that
The sum of two monomers/(the sum of two monomers+matrix pitch)=10~30%, wherein each plant demand of two monomers is referred to by isocyanates
Number R is calculated and is obtained；
Two monomer is castor oil and liquefied mdi, and liquefied mdi, liquefied mdi and castor oil reaction are added dropwise at 115~140 DEG C
Isocyanate index R be 1.6~2.0；20~50min is sufficiently sheared after dripping off again so that reaction system is uniformly dispersed.
2. being the method according to claim 1, wherein the castor oil in the step 1) is dehydrated castor oil
Castor oil is dehydrated to 2~3h to be made in 110~120 DEG C, 0.1MPa vacuum tank.
3. the method according to claim 1, wherein polymerization inhibitor is p-methyl benzenesulfonic acid ester, benzene in the step 2)
One of formyl chloride, phosphoric acid, dimethyl suflfate.
4. any method according to claim 1~3, which is characterized in that in the step 2), two monomer additive amounts are 20
~30%；Liquefied mdi and the isocyanate index R of castor oil reaction are 1.6~1.8.
5. any method according to claim 1~3, which is characterized in that in the step 2), used at 115~140 DEG C
Liquefied mdi is added dropwise in dropping funel into reaction vessel dropwise, and rate of addition is controlled in 10~15 drops/min.
6. a kind of method for preparing the mixture containing polyurethane based on castor oil modified pitch, which is characterized in that use with lower section
Method is prepared:
It preheats and gathers materials at 140~170 DEG C, fine aggregate and coarse aggregate be added and is warming up to 140~170 DEG C and mixes and stirs in pot, is mixed
It closes uniform；The polyurethane based on castor oil modified pitch that into middle addition Claims 1 to 5 of gathering materials prepared by any the method, is mixed
Close 90~180s；
Miberal powder is added into the mixture mixed and continues 90~180s of mix, mix is uniform, hit at 140~150 DEG C it is real at
Type hits 70~80 times in fact, the test specimen of forming is put into 100 DEG C of baking ovens and is conserved for 24 hours, and room temperature conserves 2~4 days to obtain the final product.
7. the method for mixture of the preparation containing polyurethane based on castor oil modified pitch according to claim 6, feature
It is, the polyurethane based on castor oil modified pitch is 4~6:100 with the mass ratio to gather materials.
8. the method for mixture of the preparation containing polyurethane based on castor oil modified pitch according to claim 6, feature
It is, in the mixture in terms of fine aggregate, coarse aggregate and miberal powder gross mass, fine aggregate mass percent accounts for 40~60%, slightly
Aggregate quality percentage accounts for 32~52%, and powdered ore quality percentage accounts for 4~8%, wherein fine aggregate is limestone, nominal particle diameter
For 0.075mm < δ < 4.75mm, coarse aggregate is basalt, and nominal particle diameter is 4.75mm≤δ, miberal powder ground by fat lime rock and
At nominal particle diameter is δ≤0.075mm；The gradation gathered materials is to meet the gradation of standard specification for construction and acceptance of highway asphalt pavement.
9. the mixture that any the method for claim 6~8 is prepared.
10. the application of mixture as claimed in claim 9, which is characterized in that applied in common road, highway, municipal administration
Road, garden road surface, square road surface pave, repair, in waterproof and grouting treatment.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510359604.XA CN106317371B (en) | 2015-06-25 | 2015-06-25 | A method of preparing polyurethane based on castor oil modified pitch and its mixture |
| US15/739,662 US20180312437A1 (en) | 2015-06-24 | 2016-06-24 | Polyurethane, modified asphalt and mixture material containing same and pavement structure |
| PCT/CN2016/087102 WO2016206636A1 (en) | 2015-06-24 | 2016-06-24 | Polyurethane, modified asphalt and mixture material containing same and road surface structure |
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|---|---|---|---|
| CN201510359604.XA CN106317371B (en) | 2015-06-25 | 2015-06-25 | A method of preparing polyurethane based on castor oil modified pitch and its mixture |
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| CN109206582B (en) * | 2018-08-14 | 2021-05-28 | 山东科技大学 | Double-aggregate composite high polymer and grouting method and application thereof |
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|---|---|---|---|---|
| CN102617070A (en) * | 2012-03-23 | 2012-08-01 | 重庆市智翔铺道技术工程有限公司 | Polyurethane asphalt concrete as well as preparation method and application thereof |
| CN103102706A (en) * | 2013-01-22 | 2013-05-15 | 烟台万华聚氨酯股份有限公司 | Polyurethane high-temperature-resistant anti-rutting modifier for road asphalt |
| WO2014189141A1 (en) * | 2013-05-24 | 2014-11-27 | 株式会社ダイフレックス | Asphalt-urethane composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58122960A (en) * | 1982-01-18 | 1983-07-21 | Nichireki Chem Ind Co Ltd | Bituminous mixture for curable paving material |
| JP2923547B2 (en) * | 1992-12-02 | 1999-07-26 | 第一工業製薬株式会社 | Waterproof anti-vibration method for ballast track deck |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102617070A (en) * | 2012-03-23 | 2012-08-01 | 重庆市智翔铺道技术工程有限公司 | Polyurethane asphalt concrete as well as preparation method and application thereof |
| CN103102706A (en) * | 2013-01-22 | 2013-05-15 | 烟台万华聚氨酯股份有限公司 | Polyurethane high-temperature-resistant anti-rutting modifier for road asphalt |
| WO2014189141A1 (en) * | 2013-05-24 | 2014-11-27 | 株式会社ダイフレックス | Asphalt-urethane composition |
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