CN107936590A - A kind of high storage stability rubber powder modified asphalt material and preparation method thereof - Google Patents
A kind of high storage stability rubber powder modified asphalt material and preparation method thereof Download PDFInfo
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- CN107936590A CN107936590A CN201711215686.6A CN201711215686A CN107936590A CN 107936590 A CN107936590 A CN 107936590A CN 201711215686 A CN201711215686 A CN 201711215686A CN 107936590 A CN107936590 A CN 107936590A
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- Prior art keywords
- rubber powder
- rubber
- modified asphalt
- pitch
- coating
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Classifications
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B2017/001—Pretreating the materials before recovery
-
- 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
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
- C08L2207/24—Recycled plastic recycling of old tyres and caoutchouc and addition of caoutchouc particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention discloses a kind of waste Crumb rubber modified asphalt, the rubber powder modified asphalt is made of coating rubber powder and pitch, and the weight ratio of the coating rubber powder and pitch is 1:1‑30.The coating rubber powder is made of acylamide polymer and rubber powder of waste tire.Rubber modified asphalt of the present invention is the rubber asphalt being modified using rubber powder of waste tire, pre- modification is passed through on rubber powder surface, improve compatibility, solve the problems, such as that rubber powder modified asphalt storage stability is poor, good stability, the making available for each grade road surface can be kept in storage transport is logical.
Description
Technical field
The present invention relates to a kind of modified pitch and preparation method thereof, more particularly to a kind of rubber powder of waste tire modified pitch
And preparation method thereof, belong to industrial chemical technical field.
Background technology
As transportation in recent years develops, generation phenomena such as vehicle maximization, traffic channelling, heavy duty, overload, drips
Blue or green road surface is faced with acid test, and plain asphalt material has been difficult to meet asphalt pavement structure and modern transportation hair
The demand of exhibition.In addition, a large amount of waste and used rubber tyres occurs in the fast development of auto industry, it is degrading environment, destroys vegetation
Grow, have impact on human health and living environment.Rubber powder is made as asphalt modifier in waste tire, is a kind of effectively profit
With the effective way of waste tire.
At present, known rubber powder modified asphalt manufacture method be by the levigate rubber powder of waste tire be added to 160 DEG C-
In 190 DEG C of heated bitumen, shear-mixed is carried out using high speed shear instrument, rubber powder is dispersed in pitch, becomes rubber
Powder-modified asphalt.First, waste Crumb rubber is swollen by the light components absorbed in pitch, and volumetric expansion is original three times
More than, surrounding forms gelinite；Then, rubber powder can produce chemical depolymerization and desulfurization again in pitch so that the glue in pitch
The increase of matter component content.These two aspects effect makes modified pitch become the very big continuous phase system of semisolid of viscosity, has fine
Technical indicator performance, there is stability with the road surface high temperature of its making, low temperature has pliability, has under long-time service resistance to old
The property changed.
But had differences on the molecular weight and chemical constitution of rubber powder and pitch, the two poor compatibility, is prepared
Rubber powder modified asphalt poor storage stability, rubber powder can assemble the bottom for being deposited on pitch in matrix pitch, this not only gives
The transport and construction of rubber powder modified asphalt bring many difficulties, and seriously affect the performance on road surface after making.
For stable storage sex chromosome mosaicism, there are many researchs both at home and abroad, improved rubber powder to a certain degree and dripped with matrix
Blue or green compatibility.The concrete scheme of existing research is classified according to its modification theory, can be mainly divided into following several：
1. the compatibility between rubber powder and matrix pitch is increased by stabilizer.
For example, Germany is improved between rubber powder and matrix pitch using TOR (trans polyoctenamer rubber activating agent) earliest
Compatibility, but the complex production process of TOR, prepares material expensive, causes the price of additive very high, in engineering cost
It is upper to there is the problem of very big.Chinese invention patent CN105733275A adds rubber activator when prepared by rubber powder modified asphalt
Or the agent of disulfides activating and regenerating and phenols age resister, and it is using reaction kettle that pitch, rubber powder and activating and regenerating agent is pre-
First react, activating and regenerating agent destroys the net structure of rubber powder, reduces the effect between strand, cures in late phase reaction
Pitch and rubber powder are then bound up by agent, form stable rubber asphalt colloid system, and then increase rubber powder modified asphalt
Storage stability.But the reaction between rubber powder and matrix pitch is more complicated, the addition of additive more exacerbates this
Kind of situation, is difficult control product quality in production process, and preparation process complexity is, it is necessary to reaction kettle and high speed shear instrument or glue
The plurality of devices such as body mill.
2. improve the storage stability of rubber powder modified asphalt by improving preparation process.
Chinese invention patent application CN103951993A proposes to add silane coupling agent in rubber asphalt, and passes through microwave
Radiation promotes the cross-linking reaction of coupling agent and rubber asphalt, to improve the compatibility between rubber powder and matrix pitch.But silicon
Alkane coupling agent higher price and preparation process complexity, microwave radiation controllability is not high, is not suitable for a large amount of productions.
3. by the modification to rubber powder, the compatibility between rubber powder and matrix pitch is improved.
Rubber powder is first modified by Chinese invention patent CN103205131A using ethanol and waterglass, is existed using rubber powder
Surface forms great amount of hydroxy group isoreactivity reactive group, these active groups and the unsaturated hydrocarbons in pitch in strong base solution
Graft reaction is learned, the asphalitine that modified glue powder is absorbed in pitch forms stable boundary layer, rubber powder is uniformly dispersed in pitch,
Improve the storage stability of rubber asphalt.But rubber powder can produce part aging in strong base solution, follow the string, after influencing
In the modified effect and whole process of phase, and entirely react more complicated, the extent of reaction is uncontrollable.
The content of the invention
It is an object of the invention to overcome the problem of rubber asphalt storage stability is bad in the prior art, there is provided Yi Zhonggao
Storage stability rubber powder modified asphalt material and preparation method thereof.Modifying rubber powder drip is remarkably improved using this production method
Blue or green storage stability, while increase process complexity is avoided, it is allowed to be suitable for heavy industrialization application.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：
A kind of waste Crumb rubber modified asphalt, the rubber powder modified asphalt are made of coating rubber powder and pitch, the painting
The weight ratio of layer rubber powder and pitch is 1:1-30.The coating rubber powder is by acylamide polymer and waste tire rubber
Powder forms.
Rubber modified asphalt of the present invention is the rubber asphalt being modified using rubber powder of waste tire, and overall compatibility is good,
Good stability, the making available for each grade road surface can be kept in storage transport is logical.This is because rubber powder table
Pre- modification is passed through in face, forms acylamide polymer coating on rubber powder surface, improves the phase between rubber powder and pitch
Capacitive, solves the problems, such as that rubber powder modified asphalt storage stability is poor so that rubber powder modified asphalt has excellent technology
Performance.Compatibility including improving rubber powder and matrix pitch indirectly, improves the storage stability of rubber powder modified asphalt.This
Kind waste Crumb rubber modified asphalt, without being continuously stirred processing, is reduced and is stirred continuously in paving process is produced
The energy consumption brought, can promote rubber powder modified asphalt mixture large-scale promotion application, improve rubber powder modified asphalt pavement performance.
Waste Crumb rubber modified asphalt of the present invention contributes to the recycling of waste tire, solves traditional stacking, landfill, burns waste and old wheel
The Heavy environmental pollution problem that the processing mode of tire is brought.
Further, the weight ratio of coating rubber powder and pitch is 1：1.5-25.Preferably ratio is 1:3-20.Coating
Rubber powder passes through modification and the preferable dissolution dispersity of coal tar, is that good modification can be achieved using less rubber powder
Effect.It is furthermore preferred that coating rubber powder and pitch content are 1:3-10.More it is highly preferred that the ratio of coating rubber powder and pitch
For 1:4-6.
Further, the coating rubber powder and pitch, are uniformly mixed using colloid mill or high speed shear instrument.Rubber powder and
Pitch can preferably carry out mixing by colloid mill or the processing of high speed shear instrument to be disperseed to obtain equal phase constituent, is had more outstanding
Stability and binding ability.
Preferably, the incorporation time is 30-90min；The mixing temperature is 150-210 DEG C.In mixed rubber powder and
Appropriate heating during pitch, promotes rubber and pitch softening to be uniformly mixed, lifts the comprehensively modifying quality of modified pitch
It is optimal.Preferably, 160-190 DEG C of mixing temperature.
Further, the pitch is No. 30, No. 50, No. 60, No. 70, No. 80, No. 90, No. 110 asphalt, can be it
Middle a kind of or a variety of mixture.Adjust the label of pitch accordingly according to road construction condition and environment, be allowed to accord with
Close the requirement of road construction.
Further, the acylamide polymer be PA6, PA66, PA11, PA12, PA46, PA610, PA612, PAl010 and
One or more in nylon 12.
Further, the part by weight of acylamide polymer and waste tire powder is 0.3-3 in the coating rubber powder:10.
Preferably, acylamide polymer and waste tire powder weight ratio are 1-3：10.Suitable acylamide polymer can be more preferable
Promotion waste tire powder in rubber powder and matrix pitch be sufficiently mixed uniformly, avoid rubber and pitch be layered caused by rubber
Pitch performance reduces, and reduces rubber asphalt construction application difficulty.
Further, the rubber powder of waste tire is the rubber powder of waste tire ground, fineness specification 30-100
Mesh.Rubber powder of waste tire fineness specification is higher, has preferable fineness, and easily and amide polymer prepares conversion coating rubber
Powder.
Further, the acylamide polymer appearance is graininess.Granular acylamide polymer is easily and waste and old
Tyre rubber powder is mixed, and has given play to modifying function of the amide polymer for rubber powder.
Further, above-mentioned waste Crumb rubber modified asphalt is mixed by coating rubber powder and pitch, is heated to 120-300 DEG C of stirring
Mix 20-180min's.
Preferably, coating rubber powder and pitch mixing, are heated to 150-200 DEG C, are stirred 30-120min and are made uniform
Rubber modified asphalt.Coating rubber powder and pitch are thoroughly mixed and uniformly, obtain the asphalt material that rubber strengthens completely, tool
There is the characteristics of material quality is excellent prominent, while there is outstanding high-temperature behavior and cryogenic property, realize good modified enhancing.
In order to be preferably modified using rubber powder to pitch, the present invention also provides a kind of above-mentioned coating rubber powder to prepare
Method.The working process of coating rubber powder is realized by coating rubber powder, preparation method thereof, is allowed to be more applicable for modified rubber drip
Green grass or young crops application, improves the quality of final product rubber asphalt.Specific rubber asphalt preparation method is as follows：
A kind of coating rubber powder, preparation method thereof, comprises the following steps：
1) waste Crumb rubber is stripped and dried using acetone, using the sodium hydroxide solution and 5-20% of 2-10%
Hydrochloric acid solution soaks 30-150min successively, drying, and waste Crumb rubber finally is carried out extracting again with acetone dries, and obtains rubber
Powder is spare.
2) acylamide polymer is dissolved in solvent, polymer concentration 2-13%, it is molten places 6-48h formation polymer
Liquid, rubber powder prepared by step 1 are added in above-mentioned polymer solution, are sufficiently stirred, and stand, and drying, obtains coating rubber
Powder.
Coating rubber powder, preparation method thereof application of the present invention is sour, alkali process waste tire rubber make it that its surface is sufficiently cleaned up,
And be roughened, finally it is modified with rubber powder and dissolved acylamide polymer and coating rubber powder is made so that rubber
Vulcanized rubber powder is uniformly distributed one layer of suitable acylamide polymer film.The amide polymer of rubber powder surface attachment is for rubber
Powder provides the facilitation for promoting scattered homogenization after being applied in pitch, can lift the stabilization of rubber asphalt well
Property so that rubber modified asphalt can be applied preferably in different construction works heavy industrialization.
Further, step 1, the acetone purity is pure or chemical pure to analyze.Select the acetone extraction purification of purifying waste and old
Rubber powder removes impurity component, improves the degree of purity of rubber powder, is more advantageous to the application of rubber powder.It is it is preferred that pure using analyzing.
Further, step 1, the extractive process uses Soxhlet extractor.Soxhlet extractor application is convenient, treatment effeciency compared with
Height, easy to extract the implementation for the treatment of process.
Further, step 1, preferably concentration of sodium hydroxide solution is 4-6%, select the sodium hydroxide solution of low concentration into
Row cleaning, washing effect is good, does not destroy rubber self-molecules present chain structure.More preferably concentration 5%.
Further, step 1, preferably described concentration of hydrochloric acid solution is 5-15%, and salt acid elution removes the impurity insoluble in alkali
Component, lifts clean-up effect, can also remove the remaining sodium hydroxide solution residue of lixiviating, and more preferably 10%.
Further, step 2, the solvent be with the corresponding solvent of amide-type material, it is molten that amide-type material can be dissolved in this
Agent simultaneously forms uniform polymer solution.
Further, step 2, polymer concentration 5%.The concentration of acylamide polymer is relatively low, is subsequently adding waste and old wheel
Tire rubber powder surface concentration for composite is suitable, can save raw material, gives full play to the effect using amide polymer.
Further, step 2, the acylamide polymer, which is added in solvent, places 12-30h formation polymer solutions.
Further, step 2, time of repose 0.3-4h.It is preferred that 0.5-2h, more preferably 1h.Rubber powder is added to acid amides polymerization
After in thing solution, it is uniformly mixed, then stands so that rubber powder and amide polymer the phase interaction in stablizing solution
With realizing that rubber powder surface is evenly arranged the purpose of coating.
Compared with prior art, beneficial effects of the present invention：
1. rubber modified asphalt of the present invention is the rubber asphalt being modified using rubber powder of waste tire, rubber powder surface is passed through
Pre- modification, forms acylamide polymer coating on rubber powder surface, improves the compatibility between rubber powder and pitch, solve
The problem of rubber powder modified asphalt storage stability of having determined is poor, overall compatibility is good, can keep good in storage transport is logical
Good stability, the making available for each grade road surface.
2. rubber modified asphalt of the present invention is in paving process is produced, without being continuously stirred processing, reduce
The energy consumption brought is stirred continuously, can promote rubber powder modified asphalt mixture large-scale promotion application.
3. rubber modified asphalt of the present invention is very beneficial for waste tire recycling, traditional stacking is solved, fills, burn
Burn the Heavy environmental pollution problem that the processing mode of waste tire is brought.
Embodiment
With reference to test example and embodiment, the present invention is described in further detail.But this should not be understood
Following embodiment is only limitted to for the scope of the above-mentioned theme of the present invention, it is all that this is belonged to based on the technology that present invention is realized
The scope of invention.Not specified percentage is generally weight percentage in the present invention.
The important technological parameters for the matrix pitch that the present invention uses are as shown in the table, and follow-up each embodiment is using following
Matrix pitch material is tested.
1 matrix pitch Technique performance parameter table of table
Rubber powder surface dedoping step in following embodiments：
1) 60 mesh rubber powders are put into Soxhlet extractor, acetone is fitted into the flask of extractor, is added using water-bath
Heat, rubber powder is taken out, dried in 60-80 DEG C of baking oven after extracting 2-4h.
2) rubber powder after drying is put into 5% sodium hydroxide solution and soaks 1-2h.
3) rubber powder after immersion is put into 5% hydrochloric acid solution and soaks 1-2h, dried in 100-110 DEG C of baking oven
It is dry.
4) rubber powder of drying is placed again into Soxhlet extractor, acetone is fitted into the flask of extractor, using water-bath
Heated, rubber powder is taken out after extracting 2-4h, is dried in 60-80 DEG C of baking oven.
The coating modified process of rubber powder in following embodiments：
1) graininess polyamide is put into formic acid generation polyamide formic acid solution after 24h；
2) rubber powder after removal of impurities is added to stirring in polyamide formic acid solution and stands 1h, to reach the surface of rubber powder
Coating activates, and is put into 105 DEG C of baking oven and dries；
3) rubber powder after activation is shredded.
It is prepared by the rubber powder modified asphalt in following comparative example and embodiment：
1) No. 90 matrix pitch 500g are taken, are put into heating 30-60min in 100-150 DEG C of baking oven；
2) rubber powder after activation is added in 160 DEG C -190 DEG C of heated bitumen, machinery is carried out using high speed shear instrument
Stirring, high speed shear instrument speed is preferably 20r/min, and mixing time 60min, rubber powder modified asphalt is obtained after shearing.
Here is to manufacture the embodiment and comparative example of rubber powder modified asphalt.
<Embodiment 1>
10g polyamide is dissolved in 500ml formic acid and forms polyamide formic acid solution, takes the rubber powder after the removal of impurities of 100g surfaces to exist
Coating activation is carried out in this solution, rubber powder after activation is added in 500g pitches, rubber powder, which is prepared, by shearing changes
Property pitch.
<Embodiment 2>
5g polyamide is dissolved in 500ml formic acid and forms polyamide formic acid solution, takes the rubber powder after the removal of impurities of 100g surfaces to exist
Coating activation is carried out in this solution, rubber powder after activation is added in 500g pitches, rubber powder, which is prepared, by shearing changes
Property pitch.
<Embodiment 3>
15g polyamide is dissolved in 500ml formic acid and forms polyamide formic acid solution, takes the rubber powder after the removal of impurities of 100g surfaces to exist
Coating activation is carried out in this solution, rubber powder after activation is added in 500g pitches, rubber powder, which is prepared, by shearing changes
Property pitch.
<Comparative example 1>
It is prepared by non-activated waste Crumb rubber modified asphalt
100 gram of 60 mesh rubber powder is weighed, is added in 500g pitches, using high speed shear instrument by rubber powder and matrix pitch
Shear-mixed, obtains rubber powder modified asphalt.
Performance test
According to Ministry of Communications's professional standard《Highway engineering pitch and Asphalt Mixture Experiment code》(JTG E20-2001) point
It is other to make a service test to comparative example and embodiment, result of the test such as following table：
The modified drip that (comparative example) is prepared with the invention compared with common rubber powder modified asphalt is can be seen that from the data of table
The softening point of blue or green (embodiment) is almost unchanged, but its isolation softening point difference reduces more than 50%, therefore is prepared using the present invention
Activated rubber powder be modified after pitch possess extraordinary storage stability.
<Embodiment 4>
1g polyamide 50ml formic acid is dissolved, 12g rubber powders (60 mesh) is then added, is sufficiently stirred, drying is sloughed molten
Agent, obtains coating rubber powder.70# matrix pitch 50g are taken, are heated to 170 DEG C, fully softening, above-mentioned painting is added under stirring
Layer rubber powder, continues insulated and stirred 60min, obtains activating rubber powder rubber modified bitumen.
Needle penetration 63.6mm, 59.5 DEG C of softening point, isolates 12.6 DEG C of softening point difference.
<Embodiment 5>
3g polyamide 50ml formic acid is dissolved, 15g rubber powders (80 mesh) is then added, is sufficiently stirred, drying is sloughed molten
Agent, obtains coating rubber powder.90# matrix pitch 50g are taken, are heated to 170 DEG C, fully softening, above-mentioned painting is added under stirring
Layer rubber powder, continues insulated and stirred 80min, obtains activating rubber powder rubber modified bitumen.
Needle penetration 50.3mm, 61.4 DEG C of softening point, isolates 16.9 DEG C of softening point difference.
<Embodiment 6>
2g polyamide 50ml formic acid is dissolved, 12g rubber powders (60 mesh) is then added, is sufficiently stirred, drying is sloughed molten
Agent, obtains coating rubber powder.70# matrix pitch 50g are taken, are heated to 210 DEG C, fully softening, above-mentioned painting is added under stirring
Layer rubber powder, continues insulated and stirred 30min, obtains activating rubber powder rubber modified bitumen.
Needle penetration 58.1mm, 60.7 DEG C of softening point, isolates 13.4 DEG C of softening point difference.
<Embodiment 7>
1g polyamide 50ml formic acid is dissolved, 10g rubber powders (30 mesh) is then added, is sufficiently stirred, drying is sloughed molten
Agent, obtains coating rubber powder.50# matrix pitch 50g are taken, are heated to 180 DEG C, fully softening, above-mentioned painting is added under stirring
Layer rubber powder, continues insulated and stirred 50min, obtains activating rubber powder rubber modified bitumen.
Needle penetration 61.6mm, 60.5 DEG C of softening point, isolates 10.5 DEG C of softening point difference.
The activating rubber powder rubber modified bitumen result prepared by embodiment 4-7 can be seen can by adding coating rubber powder
Effectively to improve the needle penetration of matrix pitch, when application polyamide ratio in the case of 10-20%, rubber asphalt it is soft
Change the suitable road construction requirement of point, and the isolation softening point difference of rubber asphalt is relatively low, it can be ensured that rubber asphalt is in work progress
In need not continuously be stirred strongly.
To sum up, polymer coating can increase the compatibility of rubber powder and matrix pitch, compared to General Purpose Rubber powder-modified asphalt
Activating rubber powder modified pitch storage stability is significantly lifted, and isolate after activating rubber powder modified pitch still possess compared with
Good high temperature rutting resistance.Asphalt pavement road surface caused by rubber asphalt using the present invention can effectively prevent summer high temperature
Deformation.
Claims (10)
1. a kind of waste Crumb rubber modified asphalt, the rubber powder modified asphalt is made of coating rubber powder and pitch, the coating
The weight ratio of rubber powder and pitch is 1:1-30；
The coating rubber powder is made of acylamide polymer and rubber powder of waste tire.
2. waste Crumb rubber modified asphalt as claimed in claim 1, it is characterised in that the ratio of coating rubber powder and pitch is 1：
1.5-25。
3. waste Crumb rubber modified asphalt as claimed in claim 1, it is characterised in that the coating rubber powder and pitch, using glue
Body is ground or high speed shear instrument is uniformly mixed.
4. waste Crumb rubber modified asphalt as claimed in claim 3, it is characterised in that the incorporation time is 30-90min；It is described
Mixing temperature is 150-210 DEG C.
5. waste Crumb rubber modified asphalt as claimed in claim 1, it is characterised in that acylamide polymer in the coating rubber powder
Part by weight with waste tire powder is 0.3-3:10.
6. waste Crumb rubber modified asphalt as claimed in claim 1, it is characterised in that the rubber powder of waste tire is to grind
Rubber powder of waste tire, fineness specification is 30-100 mesh.
7. waste Crumb rubber modified asphalt as claimed in claim 1, it is characterised in that the acylamide polymer appearance is particle
Shape.
8. a kind of coating rubber powder, preparation method thereof, comprises the following steps：
1）Waste Crumb rubber is stripped and dried using acetone, it is molten using the sodium hydroxide solution of 2-10% and the hydrochloric acid of 5-20%
Liquid soaks 30-150min successively, drying, and waste Crumb rubber finally is carried out extracting again with acetone dries, and it is spare to obtain rubber powder；
2）Acylamide polymer is dissolved in solvent, polymer concentration 2-13%, places 6-48h and form polymer solution, will walk
Rapid 1 rubber powder prepared is added in above-mentioned polymer solution, is sufficiently stirred, and is stood, and drying, obtains coating rubber powder.
9. coating rubber powder, preparation method thereof as claimed in claim 1, it is characterised in that step 1, the acetone purity is pure to analyze
Or chemistry is pure.
10. coating rubber powder, preparation method thereof as claimed in claim 1, it is characterised in that step 2, the acylamide polymer adds
Enter to place 12-30h in solvent and form polymer solution.
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| CN201711215686.6A CN107936590B (en) | 2017-11-28 | 2017-11-28 | Rubber powder modified asphalt material with high storage stability and preparation method thereof |
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| CN201711215686.6A CN107936590B (en) | 2017-11-28 | 2017-11-28 | Rubber powder modified asphalt material with high storage stability and preparation method thereof |
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| CN107936590B CN107936590B (en) | 2019-12-20 |
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Cited By (5)
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| CN109261225A (en) * | 2018-11-06 | 2019-01-25 | 绍兴文理学院 | A method of cation exchange resin is prepared using damaged tire |
| CN110003669A (en) * | 2019-03-15 | 2019-07-12 | 长沙理工大学 | A kind of compound TB rubber powder modified asphalt and preparation method thereof |
| CN114773635A (en) * | 2022-04-20 | 2022-07-22 | 武汉理工大学 | Low-VOCs rubber particles, rubber asphalt and preparation method thereof |
| CN115044220A (en) * | 2022-07-23 | 2022-09-13 | 长沙理工大学 | Green and environment-friendly rubber asphalt and preparation method and application thereof |
| CN115584642A (en) * | 2022-09-29 | 2023-01-10 | 北京宇阳泽丽防水材料有限责任公司 | Low-energy-consumption processing technology of environment-friendly asphalt waterproof coiled material |
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| CN109261225A (en) * | 2018-11-06 | 2019-01-25 | 绍兴文理学院 | A method of cation exchange resin is prepared using damaged tire |
| CN110003669A (en) * | 2019-03-15 | 2019-07-12 | 长沙理工大学 | A kind of compound TB rubber powder modified asphalt and preparation method thereof |
| CN114773635A (en) * | 2022-04-20 | 2022-07-22 | 武汉理工大学 | Low-VOCs rubber particles, rubber asphalt and preparation method thereof |
| CN115044220A (en) * | 2022-07-23 | 2022-09-13 | 长沙理工大学 | Green and environment-friendly rubber asphalt and preparation method and application thereof |
| CN115584642A (en) * | 2022-09-29 | 2023-01-10 | 北京宇阳泽丽防水材料有限责任公司 | Low-energy-consumption processing technology of environment-friendly asphalt waterproof coiled material |
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