CN106189295A - A kind of composite modifier widening asphalt use temperature range and preparation method thereof - Google Patents
A kind of composite modifier widening asphalt use temperature range and preparation method thereof Download PDFInfo
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- CN106189295A CN106189295A CN201610638172.0A CN201610638172A CN106189295A CN 106189295 A CN106189295 A CN 106189295A CN 201610638172 A CN201610638172 A CN 201610638172A CN 106189295 A CN106189295 A CN 106189295A
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F253/00—Macromolecular compounds obtained by polymerising monomers on to natural rubbers or derivatives thereof
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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
- C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L19/003—Precrosslinked rubber; Scrap rubber; Used vulcanised rubber
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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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
- C08L2312/00—Crosslinking
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Abstract
The present invention relates to a kind of composite modifier widening asphalt use temperature range and preparation method thereof, by weight percentage, the raw material composition of described composite modifier is as follows: PE regenerates granule 45 70%, activated rubber powder 25 50%, graft modification gutta-percha 2 5%.Its preparation method is: PE regenerates granule, activated rubber powder, graft modification gutta-percha are placed in mixer mixing in proportion, add in single screw extrusion machine after mix homogeneously, melt extrude under temperature 240 300 DEG C, screw speed 30 100rpm, water-cooled wire drawing, pelletizing, is dried to obtain.Composite modifier of the present invention can significantly improve high temperature anti-rut behavior and the low temperature anti-cracking performance of asphalt, has i.e. widened the use temperature range of asphalt.
Description
Technical field
The present invention relates to a kind of composite modifier widening asphalt use temperature range and preparation method thereof.
Background technology
About 75% is had to have employed bituminous paving in the highway that China is built.Owing to bituminous paving uses Colophonium material
Material is as binder, and Colophonium is the viscous-elastic material of a kind of response to temperature, and when ambient temperature raises, bituminous paving is vehicle lotus
The disease such as rut, wave passage can be produced under load effect；When the environment temperature decreases, bituminous paving can produce again crack, impact
The endurance quality on road surface and service life.Along with the big flow of China's highway, big axle carries and canalized traffic feature shows more
Come the most prominent, how to improve the high temperature anti-rut behavior of bituminous paving and low temperature anti-cracking performance has become in road construction one
Urgent need to solve the problem.
Chinese patent CN104592771A discloses a kind of anti-rut agent for asphalt pavements and preparation method thereof, this anti-rut agent
It is mixed according to parts by weight respectively 10-100 part and 0-90 part by gutta-percha and polymer, the asphalt road that this application provides
Face anti-rut agent can improve asphalt pavement structural layer deformation, improves bituminous paving resilience, increases its rutting resistance.
Compared with above-mentioned patent, the present invention uses waste Crumb rubber, saves the consumption of grafting gutta-percha, reduces production cost, uses
Waste Crumb rubber and the system of PE regeneration Particles dispersed, have the good feature of environmental protection, and composite modifier provided by the present invention, rubber
Rubber powder can be the most compatible with Colophonium, and temperature susceptibility for asphalt is improved, and resistance to flow improves, and is remarkably improved the low temperature of Colophonium
Ductility, improves the cryogenic property of asphalt.
Summary of the invention
The technical problem to be solved is for above-mentioned deficiency present in prior art, it is provided that one widens drip
Blue or green compound composite modifier using temperature range and preparation method thereof.
For solving above-mentioned technical problem, present invention provide the technical scheme that
A kind of asphalt of widening is provided to use the composite modifier of temperature range, by weight percentage, its raw material
Form as follows: PE regenerates granule 45-70%, activated rubber powder 25-50%, graft modification gutta-percha 2-5%；
The preparation method of described activated rubber powder is: is mixed and stirred with assistant activator 2:1 in mass ratio by dry waste Crumb rubber, mixes
Seal at ambient temperature to place and obtain activated rubber powder in 48-72 hour after uniformly；
The preparation method of described graft modification gutta-percha is: is added in banbury by gutta-percha and plasticates, then will plasticate
Gutta-percha add in solvent, be warming up to 70-80 DEG C and stir and make it dissolve, adding maleic anhydride monomer and initiator, continue
Continuous stirring brings it about graft reaction, and reaction terminates rear post processing and obtains graft modification gutta-percha.
By such scheme, described waste Crumb rubber granularity is 40-80 mesh；Described assistant activator is in 97# gasoline or 5# diesel oil
One.
By such scheme, described maleic anhydride consumption is gutta-percha quality 10-15%；Described initiator is diphenyl peroxide
One in formyl, azodiisobutyronitrile, cumyl peroxide, consumption is the 10% of maleic anhydride quality；Described solvent is
Dimethylbenzene.
The present invention also provides for the preparation method of above-mentioned composite modifier, and its step is as follows: PE regenerates granule, activation glue
Powder, graft modification gutta-percha are placed in mixer mixing in proportion, add in single screw extrusion machine, in temperature after mix homogeneously
240-300 DEG C, melt extrude under screw speed 30-100rpm, water-cooled wire drawing, pelletizing, be dried to obtain and widen asphalt and make
With the composite modifier of temperature range.
Grafting gutta-percha can carry out vulcanization reaction with activated rubber powder, crosslink, miscible with Colophonium after, be grafted gutta-percha
Graft extensive chemical can also be occurred link with the functional group such as the amino in Colophonium, constitute Colophonium, be grafted gutta-percha,
The interconnective network structure of rubber powder, it is achieved the modification to Colophonium, gutta-percha is also remarkably improved and Colophonium after graft modification
The compatibility.The softening point of modified Colophonium improves, and toughness, elastic recovery properties and cryogenic property significantly improve；Add
Activated waste rubber powder is remarkably improved the low-temperature ductility of Colophonium, improves the cryogenic property of rubber asphalt, strengthens asphalt
Elastic recovery properties；The PE regeneration granule added absorbs the wax composition in Colophonium, occurs swelling, improves the viscosity of Colophonium and soft
Change point, high-temperature stability and the Rut resistance of asphalt can be significantly improved.In sum, of the present invention composite modified
Agent can significantly improve the thermal adaptability of asphalt, widens asphalt and uses temperature range.
The beneficial effects of the present invention is: it is right that the application uses PE regeneration granule, activated rubber powder and grafting gutta-percha to be combined
Asphalt is modified, and gained composite modifier is good with the asphalt compatibility, adds in asphalt permissible
Significantly improve high temperature anti-rut behavior and low temperature anti-cracking performance (the composite modifier addition that the present invention provides of asphalt
In asphalt, gained sample dynamic stability reaches 7325-9436 time/mm, and freeze-thaw split strength ratio reaches 93.4-97.1%), i.e.
Widen the use temperature range of asphalt；The application adds activated waste rubber powder and grafting gutta-percha use is greatly saved
Amount, has saved production cost, and this preparation method has had the good feature of environmental protection.
Detailed description of the invention
For making those skilled in the art be more fully understood that technical scheme, below in conjunction with embodiment, the present invention is made
Describe in further detail.
PE regeneration granule used by the embodiment of the present invention is that Dongguan City Xie Tong plastic material company limited produces.
Embodiment 1
Prepare activated rubber powder: (being placed in 60 DEG C of thermostatic drying chambers drying, drying time is or not the waste Crumb rubber being dried by 30Kg
Less than 6 hours, granularity was 40 mesh) mix and stir with 15Kg5# diesel oil, seal at ambient temperature after uniform mixing and place 72 hours,
To activated rubber powder.
Preparation graft modification gutta-percha: 2Kg gutta-percha is added in banbury, plasticates at 110 DEG C 10 minutes, rotating speed
100rad/min, then joins the gutta-percha plasticated in 10Kg dimethylbenzene, and is warming up to 70 DEG C of stirrings simultaneously and makes gutta-percha
It is substantially soluble in dimethylbenzene, adds 300g maleic anhydride monomer and 30g dibenzoyl peroxide, continue stirring reaction 4h, instead
With acetone by product precipitate and separate after should terminating, then it is placed in vacuum drying oven for 3 times at 60 DEG C being dried with distilled water wash
Graft modification gutta-percha is obtained to constant weight.
Preparation is widened asphalt and is used the composite modifier of temperature range: by 68Kg PE regeneration granule, 30Kg activation
Rubber powder, 2Kg graft modification gutta-percha are placed in mixer mixing, add in single screw extrusion machine, in temperature 240 after mix homogeneously
DEG C, melt extrude under screw speed 80rpm, water-cooled wire drawing, pelletizing, and forced air drying obtains particle size in 80 minutes at 60 DEG C
Asphalt of widening for 2-6mm uses the composite modifier of temperature range.
Embodiment 2
Prepare activated rubber powder: (being placed in 60 DEG C of thermostatic drying chambers drying, drying time is or not the waste Crumb rubber being dried by 35Kg
Less than 6 hours, granularity was 40 mesh) mix and stir with 17.5Kg97# gasoline, seal placement 72 after uniform mixing at ambient temperature little
Time, obtain activated rubber powder.
Preparation graft modification gutta-percha: 2Kg gutta-percha is added in banbury, plasticates at 110 DEG C 10 minutes, rotating speed
100rad/min, then joins the gutta-percha plasticated in 10Kg dimethylbenzene, and is warming up to 80 DEG C of stirrings simultaneously and makes gutta-percha
It is substantially soluble in dimethylbenzene, adds 200g maleic anhydride monomer and 20g dibenzoyl peroxide, continue stirring reaction 4h, instead
With acetone by product precipitate and separate after should terminating, then it is placed in vacuum drying oven for 3 times at 60 DEG C being dried with distilled water wash
Graft modification gutta-percha is obtained to constant weight.
Preparation is widened asphalt and is used the composite modifier of temperature range: by 63Kg PE regeneration granule, 35Kg activation
Rubber powder, 2Kg graft modification gutta-percha are placed in mixer mixing, add in single screw extrusion machine, in temperature 300 after mix homogeneously
DEG C, melt extrude under screw speed 80rpm, water-cooled wire drawing, pelletizing, and forced air drying obtains particle size in 80 minutes at 60 DEG C
Asphalt of widening for 2-6mm uses the composite modifier of temperature range.
Embodiment 3
Prepare activated rubber powder: (being placed in 60 DEG C of thermostatic drying chambers drying, drying time is or not the waste Crumb rubber being dried by 40Kg
Less than 6 hours, granularity was 40 mesh) mix and stir with 20Kg97# gasoline, seal at ambient temperature after uniform mixing and place 48 hours,
Obtain activated rubber powder.
Preparation graft modification gutta-percha: 3Kg gutta-percha is added in banbury, plasticates at 110 DEG C 10 minutes, rotating speed
100rad/min, then joins the gutta-percha plasticated in 15Kg dimethylbenzene, and is warming up to 70 DEG C of stirrings simultaneously and makes gutta-percha
It is substantially soluble in dimethylbenzene, adds 300g maleic anhydride monomer and 30g cumyl peroxide, continue stirring reaction 5h, instead
With acetone by product precipitate and separate after should terminating, then it is placed in vacuum drying oven for 3 times at 60 DEG C being dried with distilled water wash
Graft modification gutta-percha is obtained to constant weight.
Preparation is widened asphalt and is used the composite modifier of temperature range: by 57Kg PE regeneration granule, 40Kg activation
Rubber powder, 3Kg graft modification gutta-percha are placed in mixer mixing, add in single screw extrusion machine, in temperature 240 after mix homogeneously
DEG C, melt extrude under screw speed 100rpm, water-cooled wire drawing, pelletizing, and forced air drying obtains granule chi in 80 minutes at 60 DEG C
The very little asphalt of widening for 2-6mm uses the composite modifier of temperature range.
Embodiment 4
Prepare activated rubber powder: (being placed in 60 DEG C of thermostatic drying chambers drying, drying time is or not the waste Crumb rubber being dried by 50Kg
Less than 6 hours, granularity was 80 mesh) mix and stir with 25Kg5# diesel oil, seal at ambient temperature after uniform mixing and place 72 hours,
To activated rubber powder.
Preparation graft modification gutta-percha: 4Kg gutta-percha is added in banbury, plasticates at 110 DEG C 10 minutes, rotating speed
100rad/min, then joins the gutta-percha plasticated in 20Kg dimethylbenzene, and is warming up to 70 DEG C of stirrings simultaneously and makes gutta-percha
It is substantially soluble in dimethylbenzene, adds 400g maleic anhydride monomer and 40g azodiisobutyronitrile, continue stirring reaction 4h, reaction
With acetone by product precipitate and separate after end, then with distilled water wash be placed in vacuum drying oven for 3 times being dried at 60 DEG C to
Constant weight obtains graft modification gutta-percha.
Preparation is widened asphalt and is used the composite modifier of temperature range: by 46Kg PE regeneration granule, 50Kg activation
Rubber powder, 4Kg graft modification gutta-percha are placed in mixer mixing, add in single screw extrusion machine, in temperature 300 after mix homogeneously
DEG C, melt extrude under screw speed 80rpm, water-cooled wire drawing, pelletizing, and forced air drying obtains particle size in 80 minutes at 60 DEG C
Asphalt of widening for 2-6mm uses the composite modifier of temperature range.
Embodiment 5
Prepare activated rubber powder: (being placed in 60 DEG C of thermostatic drying chambers drying, drying time is or not the waste Crumb rubber being dried by 45Kg
Less than 6 hours, granularity was 80 mesh) mix and stir with 22.5Kg5# diesel oil, seal at ambient temperature after uniform mixing and place 72 hours,
Obtain activated rubber powder.
Preparation graft modification gutta-percha: 3Kg gutta-percha is added in banbury, plasticates at 110 DEG C 10 minutes, rotating speed
100rad/min, then joins the gutta-percha plasticated in 15Kg dimethylbenzene, and is warming up to 70 DEG C of stirrings simultaneously and makes gutta-percha
It is substantially soluble in dimethylbenzene, adds 300g maleic anhydride monomer and 30g dibenzoyl peroxide, continue stirring reaction 4h, instead
With acetone by product precipitate and separate after should terminating, then it is placed in vacuum drying oven for 3 times at 60 DEG C being dried with distilled water wash
Graft modification gutta-percha is obtained to constant weight.
Preparation is widened asphalt and is used the composite modifier of temperature range: by 52Kg PE regeneration granule, 45Kg activation
Rubber powder, 3Kg graft modification gutta-percha are placed in mixer mixing, add in single screw extrusion machine, in temperature 240 after mix homogeneously
DEG C, melt extrude under screw speed 80rpm, water-cooled wire drawing, pelletizing, and forced air drying obtains particle size in 80 minutes at 60 DEG C
Asphalt of widening for 2-6mm uses the composite modifier of temperature range.
Embodiment 6
Prepare activated rubber powder: (being placed in 60 DEG C of thermostatic drying chambers drying, drying time is or not the waste Crumb rubber being dried by 45Kg
Less than 6 hours, granularity was 40 mesh) mix and stir with 22.5Kg5# diesel oil, seal at ambient temperature after uniform mixing and place 72 hours,
Obtain activated rubber powder.
Preparation graft modification gutta-percha: 5Kg gutta-percha is added in banbury, plasticates at 110 DEG C 10 minutes, rotating speed
100rad/min, then joins the gutta-percha plasticated in 25Kg dimethylbenzene, and is warming up to 70 DEG C of stirrings simultaneously and makes gutta-percha
It is substantially soluble in dimethylbenzene, adds 500g maleic anhydride monomer and 50g dibenzoyl peroxide, continue stirring reaction 4h, instead
With acetone by product precipitate and separate after should terminating, then it is placed in vacuum drying oven for 3 times at 60 DEG C being dried with distilled water wash
Graft modification gutta-percha is obtained to constant weight.
Preparation is widened asphalt and is used the composite modifier of temperature range: by 50Kg PE regeneration granule, 45Kg activation
Rubber powder, 5Kg graft modification gutta-percha are placed in mixer mixing, add in single screw extrusion machine, in temperature 240 after mix homogeneously
DEG C, melt extrude under screw speed 100rpm, water-cooled wire drawing, pelletizing, and forced air drying obtains granule chi in 80 minutes at 60 DEG C
The very little asphalt of widening for 2-6mm uses the composite modifier of temperature range.
Embodiment 7
Prepare activated rubber powder: (being placed in 60 DEG C of thermostatic drying chambers drying, drying time is or not the waste Crumb rubber being dried by 25Kg
Less than 6 hours, granularity was 40 mesh) mix and stir with 12.5Kg97# gasoline, seal placement 72 after uniform mixing at ambient temperature little
Time, obtain activated rubber powder.
Preparation graft modification gutta-percha: 5Kg gutta-percha is added in banbury, plasticates at 110 DEG C 10 minutes, rotating speed
100rad/min, then joins the gutta-percha plasticated in 25Kg dimethylbenzene, and is warming up to 70 DEG C of stirrings simultaneously and makes gutta-percha
It is substantially soluble in dimethylbenzene, adds 500g maleic anhydride monomer and 50g dibenzoyl peroxide, continue stirring reaction 4h, instead
With acetone by product precipitate and separate after should terminating, then it is placed in vacuum drying oven for 3 times at 60 DEG C being dried with distilled water wash
Graft modification gutta-percha is obtained to constant weight.
Preparation is widened asphalt and is used the composite modifier of temperature range: by 70Kg PE regeneration granule, 25Kg activation
Rubber powder, 5Kg graft modification gutta-percha are placed in mixer mixing, add in single screw extrusion machine, in temperature 240 after mix homogeneously
DEG C, melt extrude under screw speed 100rpm, water-cooled wire drawing, pelletizing, and forced air drying obtains granule chi in 80 minutes at 60 DEG C
The very little asphalt of widening for 2-6mm uses the composite modifier of temperature range.
The formula of the composite modifier that asphalt use temperature range is widened in the preparation of embodiment 1-7 is shown in Table 1.
Table 1 Example formulations (percentage by weight)
Anti-rut agent for asphalt pavements of the present invention is applicable to the bituminous paving of any gradation types, and volume mass percent is drip
The 0.5% of blue or green compound, can suitably increase the use ratio in the section of particular/special requirement.It is when base material mixes, same with base material
Time add mix cylinder and be stirred mixing, suitably increase 5-10 second dry mixing time, other techniques are constant.To by 0.5% ratio
The modified asphalt mixture that above-described embodiment is mixed to get with AC-13 type asphalt base material is tested, it is thus achieved that data
As shown in the table.
Table 2 performance
The composite modifier that the present invention provides as seen from the above embodiment adds gained sample Dynamic stability in asphalt
Degree reaches 7325-9436 time/mm, and freeze-thaw split strength ratio reaches 93.4-97.1%, and the high temperature that can significantly improve asphalt resists
Rut performance and low temperature anti-cracking performance.
Claims (4)
1. the composite modifier widening asphalt use temperature range, it is characterised in that by weight percentage, its
Raw material composition is as follows: PE regenerates granule 45-70%, activated rubber powder 25-50%, graft modification gutta-percha 2-5%；
The preparation method of described activated rubber powder is: mixed and stirred with assistant activator 2:1 in mass ratio by dry waste Crumb rubber, mixes and stirs all
Seal at ambient temperature to place after even and obtain activated rubber powder in 48-72 hour；
The preparation method of described graft modification gutta-percha is: is added in banbury by gutta-percha and plasticates, Du that then will plasticate
Secondary glue adds in solvent, is warming up to 70-80 DEG C and stirring makes it dissolve, add maleic anhydride monomer and initiator, continue to stir
Mixing and bring it about graft reaction, reaction terminates rear post processing and obtains graft modification gutta-percha.
Asphalt of widening the most according to claim 1 uses the composite modifier of temperature range, it is characterised in that institute
Stating waste Crumb rubber granularity is 40-80 mesh；Described assistant activator is the one in 97# gasoline or 5# diesel oil.
Asphalt of widening the most according to claim 1 uses the composite modifier of temperature range, it is characterised in that institute
Stating maleic anhydride consumption is gutta-percha quality 10-15%；Described initiator is dibenzoyl peroxide, azodiisobutyronitrile, mistake
One in oxidation diisopropylbenzene (DIPB), consumption is the 10% of maleic anhydride quality；Described solvent is dimethylbenzene.
4. the preparation method of the arbitrary described composite modifier of claim 1-3, it is characterised in that step is as follows: by PE
Regeneration granule, activated rubber powder, graft modification gutta-percha are placed in mixer mixing in proportion, add single screw rod and squeeze after mix homogeneously
Go out in machine, melt extrude under temperature 240-300 DEG C, screw speed 30-100rpm, water-cooled wire drawing, pelletizing, be dried to obtain and widen
Asphalt uses the composite modifier of temperature range.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610638172.0A CN106189295A (en) | 2016-08-05 | 2016-08-05 | A kind of composite modifier widening asphalt use temperature range and preparation method thereof |
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| CN201610638172.0A CN106189295A (en) | 2016-08-05 | 2016-08-05 | A kind of composite modifier widening asphalt use temperature range and preparation method thereof |
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Cited By (5)
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| CN107200986A (en) * | 2017-06-05 | 2017-09-26 | 李天耀 | Rubber asphalt reaction promoter（CTOR） |
| CN107987540A (en) * | 2017-11-23 | 2018-05-04 | 东南大学 | A kind of composite modified asphalt of rubber powder and SBS modified pitch and preparation method thereof |
| CN110346549A (en) * | 2019-08-14 | 2019-10-18 | 南京林业大学 | A kind of evaluation method of modified gutta-percha shape-memory properties |
| CN112876614A (en) * | 2021-02-06 | 2021-06-01 | 中交第四公路工程局有限公司 | Melt grafting method of gutta-percha and maleic anhydride |
| CN114015244A (en) * | 2021-09-30 | 2022-02-08 | 中交第四公路工程局有限公司 | High-performance rubber asphalt and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107200986A (en) * | 2017-06-05 | 2017-09-26 | 李天耀 | Rubber asphalt reaction promoter（CTOR） |
| CN107987540A (en) * | 2017-11-23 | 2018-05-04 | 东南大学 | A kind of composite modified asphalt of rubber powder and SBS modified pitch and preparation method thereof |
| CN110346549A (en) * | 2019-08-14 | 2019-10-18 | 南京林业大学 | A kind of evaluation method of modified gutta-percha shape-memory properties |
| CN112876614A (en) * | 2021-02-06 | 2021-06-01 | 中交第四公路工程局有限公司 | Melt grafting method of gutta-percha and maleic anhydride |
| CN114015244A (en) * | 2021-09-30 | 2022-02-08 | 中交第四公路工程局有限公司 | High-performance rubber asphalt and preparation method thereof |
| CN114015244B (en) * | 2021-09-30 | 2022-09-16 | 中交第四公路工程局有限公司 | High-performance rubber asphalt and preparation method thereof |
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Application publication date: 20161207 |
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