CN106147247B - A kind of asphalt modifier and its preparation and application - Google Patents
A kind of asphalt modifier and its preparation and application Download PDFInfo
- Publication number
- CN106147247B CN106147247B CN201510134352.0A CN201510134352A CN106147247B CN 106147247 B CN106147247 B CN 106147247B CN 201510134352 A CN201510134352 A CN 201510134352A CN 106147247 B CN106147247 B CN 106147247B
- Authority
- CN
- China
- Prior art keywords
- asphalt
- rubber
- liquefied residue
- rubber powder
- coal directly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The present invention provides a kind of asphalt modifier, including coal directly-liquefied residue, activated rubber powder and additive, the weight ratio of the coal directly-liquefied residue and activated rubber powder is 2:1.68-3.2, and the additive accounts for the 5%-20% of the weight sum of coal directly-liquefied residue and activated rubber powder.Modifying agent provided by the invention, it is that will make original coal directly-liquefied residue and activated rubber powder that reactively blending have occurred under additive and the effect of processing equipment power containing the mixture of coal directly-liquefied residue, activated rubber powder and additive by the Strong shear effect in mixing and extrusion process.The good combination property of modified pitch, low temperature performance excellent are prepared using modifying agent of the invention.
Description
Technical field
The invention belongs to field of road, and in particular to a kind of pitch containing coal directly-liquefied residue and activated rubber powder
Modifying agent and its preparation method and application.
Background technique
Coal directly-liquefied residue (DCLR) is a kind of mixture of complicated components, not aqueous, high ash content, high charcoal, high-sulfur, hair
Heat is high, and cohesiveness is strong.China Coal Research Institute (Beijing) has 2000 tons/year of Direct coal liquefaction device, will generate nearly 700
Ton/year coal directly-liquefied residue (DCLR)；There is 1,700,000 tons/year of DCL/Direct coal liquefaction dress in coal oil Co., Ltd, Inner Mongol Shenhua
It sets, 500,000 tons/year of coal directly-liquefied residue (DCLR) will be generated.There are no well for these coal directly-liquefied residues (DCLR)
Application approach.
(coal directly-liquefied residue prepares the system of bituminous concrete pavement anti-rutting agent to domestic patent of invention CN101844892B
Preparation Method) method that coal directly-liquefied residue prepares anti-rut agent is disclosed, the asphalt mixture anti-rutting performance of preparation is good, high
Temperature stability and water stability are good.
Domestic patent of invention CN101875789 (a kind of coal directly-liquefied residue composite modified asphalt and preparation method thereof) is public
The preparation method of coal directly-liquefied residue modified pitch is opened.
Laboratory early-stage study shows that coal directly-liquefied residue (DCLR) can significantly increase the height of asphalt
Warm nature can damage performance with water resistant, but can make the deteriorated low temperature performance of mixture.
The present invention utilizes the comprehensive of coal directly-liquefied residue and activated rubber powder from resource-effective and environmental-friendly angle
Conjunction advantage makes full use of by coal directly-liquefied residue (DCLR) and activated rubber powder by high molecular material reactive processing technology
The powerful shearing force of reactive processing machinery, is sufficiently stirred the reaction system material compared with high viscosity system, ensure that official
Reaction between capable of rolling into a ball.
A large amount of experimental study shows the advantages that rubber is due to its high resiliency, and being modified with it to pitch not only has
The performance of common polymer modified asphalt, but also can be with noise reduction, increasing bullet, price is relatively cheap.In recent years, it is protected for environment
Shield, cost reduces and factors, the waste rubber powders such as high performance are increasingly taken seriously as asphalt modifier.But rubber
Powder is similar to elastic filler and is present in pitch, and the poor compatibility with pitch has the modified effect of the high temperature performance of pitch
Limit.In storage and use process, stability is poor, rubber powder and pitch easily laminated segregation.
Summary of the invention
For shortcoming existing for this field, the purpose of the present invention is to provide a kind of high resiliency, the pitch of low cost
Modifying agent.
It is another object of the present invention to propose the preparation method of the modifying agent.
Third object of the present invention is to propose the application of the modifying agent.
Realize the object of the invention the specific technical proposal is:
A kind of asphalt modifier, including coal directly-liquefied residue (DCLR), activated rubber powder and modified additive, the coal are straight
The weight ratio for connecing liquefied residue (DCLR) and activated rubber powder is 2:1.68-3.1, and the additive accounts for coal directly-liquefied residue
(DCLR) and the 5%-20% of the weight sum of activated rubber powder.
Coal is after high-temperature and high-pressure hydrogenation, and wherein most organic matter transformation is light components, with gas or liquid form
Discharge, and generate the heavy product for accounting for about raw coal quality 30%.Referred to as coal directly-liquefied residue.Softening point is generally higher than 150 DEG C.
Preferably, the preferred asphalt content of the application is 60-85%；The coal that C and H element relative amount are 70-90% is straight
Connect liquefied residue.
Wherein, the activated rubber powder is the waste Crumb rubber of 100 parts by weight and the 2- of the residual oil of 2-8 parts by weight, 2-8 parts by weight
Benzothiazolyl mercaptan, which is kneaded, to be made, and the waste Crumb rubber is that waste tire rubber is prepared, and mesh number is 20-80 mesh.
Wherein, the additive is selected from one of oil, high melting-point wax and Masterbatch or several, and the oil is selected from rubber
Glue oil, one of aromatic naphtha and naphthenic oil or several；The high melting-point wax is selected from polyethylene wax, polypropylene wax, husky rope
One of wax and amide copolymerization wax are several.
The preparation method of modifying agent of the present invention, comprising steps of
1) waste Crumb rubber, residual oil and 2- benzothiazolyl mercaptan are added in rubber internal mixer and be kneaded preparation activation glue
Powder, the temperature of the mixing are 50-100 DEG C, and the time of mixing is 10-20 minutes；
2) then coal directly-liquefied residue (DCLR), activated rubber powder and additive are proportionally added into rubber internal mixer and are mixed
Refining, obtained mixture are squeezed out by screw extruder, are made with the granulation of air-cooled die-surface granulate equipment.
Preferably, described 80-160 DEG C of rubber internal mixer melting temperature, mixing time is 3-60 minutes, the extrusion temperature
Degree is 150-230 DEG C.
Modifying agent of the present invention is preparing the application in modified pitch and asphalt.
Using the method that modifying agent of the present invention prepares modified pitch and asphalt, comprising steps of
Process for preparing modified asphalt: aromatic naphtha is added into 120 DEG C -140 DEG C of matrix pitch, and stirring is mixed to abundant
It closes, heats the mixture to 140 DEG C -160 DEG C, add modifying agent, be stirred sufficiently swelling 20-60min, be then fed into height
Cutter is 3000-5000r/min in shear rate, and sulfur-bearing is added after shearing 10-30min under 170 DEG C of -190 DEG C of shear temperatures
Stabilizer continues after shearing 30-50min, then in slow-speed of revolution 200-300r/min, under the conditions of whipping temp is 130 DEG C -150 DEG C
20-30min is developed to get modified pitch；
The preparation method of asphalt:
The modified pitch being prepared is heated to 120-140 DEG C, mineral aggregate is heated to 140-150 DEG C, modified pitch and mine
The mass ratio of material is to obtain asphalt after 6-3:94-97 is stirred evenly.The wherein duration of mixing of modified pitch and mineral aggregate
It is 20-90 seconds.
Wherein, aromatic naphtha accounts for 4-8% in the modified pitch, and modifying agent accounts for 5-15%, and sulphur-containing stabilizer accounts for 0.05-
0.45%, remaining is matrix pitch.
The beneficial effects of the present invention are:
(1) modifying agent provided by the invention will contain coal directly-liquefied residue (DCLR), activated rubber powder and additive
Mixture is acted on by being kneaded with the Strong shear in extrusion process, makes original coal directly-liquefied residue (DCLR) and activated rubber powder
Reactively blending has occurred under modifying agent effect.Therefore when mixing and stirring mixture using modifying agent of the invention, make to reach reason
Think that the time of modified effect is substantially reduced, dry process production and application can be used.
(2) modifying agent of the invention has used activation shoddy, and the Marshall performance of the asphalt of preparation, water are stablized
The properties such as performance, high temperature stability performance and cold cracking property are good.
(3) modifying agent of the present invention has used the waste rubber powder of recycling, and cost performance is high, and processes in preparation method
Temperature at 200 DEG C hereinafter, generating process smoke pollution is small, when carrying out dry process mixing asphalt can rapid dispersion, with
Wet processing is compared, and is more energy-saving and environmentally friendly.With good economic benefit social benefit.
Modifying agent proposed by the present invention is added in pitch, avoids the firmly crisp problem of low temperature of coal liquefaction residue, meanwhile, with rubber
Glue pitch is compared, in terms of there are advantages.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Raw material used in embodiment:
Coal directly-liquefied residue (DCLR) (coal oil Co., Ltd, Shenhua), 190 DEG C of softening point
Waste Crumb rubber: 40 mesh (Beijing Fan Yang Hua Teng Co., Ltd)
Residual oil (decompression residuum of Yanshan Petrochemical company production)
2- benzothiazolyl mercaptan (Beijing Le Tai Chemical Co., Ltd.)
Aromatic naphtha, rubber oil (middle sea pitch Binzhou Co., Ltd)；
Polyethylene wax (Beijing Le Tai Chemical Co., Ltd.)
Sulphur-containing stabilizer (Research Institute of Petro-Chemical Engineering, greyish white coloured particles)
Masterbatch (Beijing Le Tai Chemical Co., Ltd.)
Pitch: middle sea 70# asphalt；
Bitumen aggregate ratio: 4.3%；
Mineral aggregate selects AC20 type, and mineral aggregate gradation is shown in Table 1:
Table 1: mineral aggregate gradation
Embodiment 1:
By 3000g waste Crumb rubber (40 mesh), 60g residual oil and 60g 2- benzothiazolyl mercaptan 80 DEG C at a temperature of be kneaded
20 minutes, obtain activated waste rubber powder.By coal directly-liquefied residue (DCLR) 2000g, rubber oil 480g, polyethylene wax 90g, color
Master batch 60g is added in rubber mill (Nanjing Kaichi Machinery Co., Ltd.), is warming up at 90 DEG C and is kneaded 10 minutes, then make
It is squeezed out at 120 DEG C with double screw extruder (Chuan Jia Machinery Co., Ltd., Zhangjagang City, SJ series), is then cut through air-cooled die-surface
Grain equipment (Nanjing extensively reaches rubber and plastics machine factory) is granulated, and obtains modifying agent.
Embodiment 2:
By 2000g waste Crumb rubber (60 mesh), 100g residual oil and 100g 2- benzothiazolyl mercaptan 80 DEG C at a temperature of it is mixed
Refining 40 minutes, obtains activated waste rubber powder.By coal directly-liquefied residue (DCLR) 2000g, rubber oil 480g, polypropylene wax 90g,
Masterbatch 60g is added in rubber mill (Nanjing Kaichi Machinery Co., Ltd.), is warming up at 90 DEG C and is kneaded 10 minutes, then
It is squeezed out at 120 DEG C using double screw extruder (Chuan Jia Machinery Co., Ltd., Zhangjagang City, SJ series), then through air-cooled die-surface
Granulate equipment (Nanjing extensively reaches rubber and plastics machine factory) is granulated, and obtains modifying agent.
Embodiment 3:
By 3000g waste Crumb rubber (40 mesh), 180g residual oil and 180g 2- benzothiazolyl mercaptan 80 DEG C at a temperature of it is mixed
Refining 20 minutes, obtains activated waste rubber powder.By coal directly-liquefied residue (DCLR) 4000g, aromatic naphtha 480g, polyethylene wax 90g,
Polypropylene wax 90g, Masterbatch 60g are added in rubber mill (Nanjing Kaichi Machinery Co., Ltd.), are warming up at 90 DEG C and are kneaded
It 10 minutes, is then squeezed out at 120 DEG C using double screw extruder (Chuan Jia Machinery Co., Ltd., Zhangjagang City, SJ series), so
It is granulated by air-cooled die-surface granulate equipment (Nanjing extensively reaches rubber and plastics machine factory), obtains modifying agent.
Embodiment 4: modified pitch and asphalt are prepared
The weight ratio of each raw material: aromatic naphtha 5%, modifying agent 6%, sulphur-containing stabilizer 0.1%, remaining is matrix pitch.
Process for preparing modified asphalt: the aromatic naphtha measured is added into 120 DEG C -140 DEG C of matrix pitch, and stirring is extremely
It is sufficiently mixed, heats the mixture to 140 DEG C -160 DEG C, add the modifying agent (embodiment 1,2,3) measured, be stirred
Sufficiently swelling 20-60min, being then fed into high shear machine in shear rate is 3000-5000r/min, 170 DEG C of -190 DEG C of shearings temperature
The stabilizer measured is added after the lower shearing 10-30min of degree, continues after shearing 30-50min, then in slow-speed of revolution 200-300r/
Min, whipping temp develop 20-30min to get modified pitch under the conditions of being 130 DEG C -150 DEG C.
Asphalt: the optimum amount of modified pitch is determined using marshall' mechanic characteristic value, and in optimum amount condition
Lower shaping test piece, and according to traffic transport industry standard " highway engineering pitch and Asphalt Mixture Experiment regulation (JTG E20-
2011) " and the U.S. SHRP plan PG placement test method, respectively to the modified pitch and drip being prepared in above-described embodiment
Green mixture is tested for the property.Test result is shown in Table 2 and table 3.
2 performance of modified bitumen of table
3 performance of asphalt mixture verification result of table
From above-mentioned data it is found that coal directly-liquefied residue (DCLR) modifying agent product is anti-in Rut resistance, water resistant damage, low temperature
Better performances in terms of splitting with anti-aging equal pavement performances can significantly extend Heavy Traffic, areas of high temperature and rainfall bituminous pavement makes
Use the service life.And through calculating, this project modifying agent is cheap, has great superiority of effectiveness.
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 (5)
1. a kind of asphalt modifier, which is characterized in that be made of coal directly-liquefied residue, activated rubber powder and additive, the coal
The weight ratio of direct liquefaction residue and activated rubber powder is 2:1.68-3.2, and the additive accounts for coal directly-liquefied residue and activation glue
The 5%-20% of the weight sum of powder；
Wherein, the additive is oil, high melting-point wax and Masterbatch, and the oil is in rubber oil, aromatic naphtha and naphthenic oil
One or several kinds；The high melting-point wax is selected from one of polyethylene wax, polypropylene wax, husky rope wax or several；
Wherein, the activated rubber powder is the waste Crumb rubber of 100 parts by weight and the 2- mercaptan of the residual oil of 2-8 parts by weight, 2-8 parts by weight
Base benzothiazole, which is kneaded, to be made, and the waste Crumb rubber mesh number is 20-80 mesh；
The asphalt modifier is prepared by following steps:
1) mixing will be carried out in waste Crumb rubber, residual oil and 2- benzothiazolyl mercaptan addition rubber internal mixer prepare activated rubber powder,
The temperature of the mixing is 50-100 DEG C, and the time of mixing is 10-20 minutes；
2) then coal directly-liquefied residue, activated rubber powder and additive are proportionally added into rubber internal mixer and are kneaded, obtained
Mixture is squeezed out by screw extruder, is made with the granulation of air-cooled die-surface granulate equipment.
2. asphalt modifier according to claim 1, it is characterised in that: the coal directly-liquefied residue studies on asphaltene content
For 60-85%；C and H element relative amount are 70-90%.
3. asphalt modifier according to claim 1, which is characterized in that the mixing temperature of rubber internal mixer in the step 2
Degree is 80-160 DEG C, and mixing time is 3-60 minutes, and the extrusion temperature is 150-230 DEG C.
4. the method that any asphalt modifier of application claim 1-3 prepares modified pitch and asphalt, special
Sign is, comprising steps of
Process for preparing modified asphalt: aromatic naphtha is added into 120 DEG C -140 DEG C of matrix pitch, and stirring, will to being sufficiently mixed
Mixture is heated to 140 DEG C -160 DEG C, adds asphalt modifier, is stirred sufficiently swelling 20-60min, is then fed into height
Cutter is 3000-5000r/min in shear rate, and sulfur-bearing is added after shearing 10-30min under 170 DEG C of -190 DEG C of shear temperatures
Stabilizer continues after shearing 30-50min, then in slow-speed of revolution 200-300r/min, under the conditions of whipping temp is 130 DEG C -150 DEG C
20-30min is developed to get modified pitch；
The preparation method of asphalt:
The modified pitch being prepared is heated to 120-140 DEG C, mineral aggregate is heated to 140-150 DEG C, modified pitch and mineral aggregate
Mass ratio is to obtain asphalt after 6-3:94-97 is stirred evenly；Wherein the duration of mixing of modified pitch and mineral aggregate is 20-
90 seconds.
5. according to the method described in claim 4, it is characterized in that, aromatic naphtha accounts for 4-8%, asphalt modification in the modified pitch
Agent accounts for 5-15%, and sulphur-containing stabilizer accounts for 0.05-0.45%, remaining is matrix pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510134352.0A CN106147247B (en) | 2015-03-25 | 2015-03-25 | A kind of asphalt modifier and its preparation and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510134352.0A CN106147247B (en) | 2015-03-25 | 2015-03-25 | A kind of asphalt modifier and its preparation and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106147247A CN106147247A (en) | 2016-11-23 |
| CN106147247B true CN106147247B (en) | 2019-11-12 |
Family
ID=57339578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510134352.0A Active CN106147247B (en) | 2015-03-25 | 2015-03-25 | A kind of asphalt modifier and its preparation and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106147247B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110511446B (en) * | 2019-08-28 | 2022-05-03 | 海南省先进天然橡胶复合材料工程研究中心有限公司 | Method for improving dissolution speed of rubber in asphalt |
| CN116120758A (en) * | 2023-03-02 | 2023-05-16 | 中路高科交通检测检验认证有限公司 | Composite modified asphalt and preparation method and application thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3215726A1 (en) * | 1982-04-28 | 1983-11-03 | Rheinische Braunkohlenwerke AG, 5000 Köln | Process for the further treatment of residues from the hydrogenating liquefaction of coal |
| CN101817946A (en) * | 2010-04-19 | 2010-09-01 | 交通部公路科学研究所 | Activated waste rubber powder and preparation method thereof as well as modified asphalt and preparation method thereof |
| CN101863637B (en) * | 2010-07-05 | 2012-02-01 | 长安大学 | Paving asphalt concrete additive and preparation method thereof |
| CN104292598B (en) * | 2014-09-12 | 2017-03-29 | 北京建筑大学 | A kind of anti-rut agent and the asphalt containing the anti-rut agent |
-
2015
- 2015-03-25 CN CN201510134352.0A patent/CN106147247B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106147247A (en) | 2016-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Leng et al. | Production of a sustainable paving material through chemical recycling of waste PET into crumb rubber modified asphalt | |
| CN104262889B (en) | Anti-rutting additive, its preparation method and application containing coal directly-liquefied residue | |
| CN101235172B (en) | Asphalt pavement rubber plastic composite anti-rut agent and preparation method thereof | |
| CN103436039B (en) | A kind of rubber and plastic alloy modifying asphalt and asphalt | |
| Li et al. | Effect of SBS and crumb rubber on asphalt modification: A review of the properties and practical application | |
| CN103525100B (en) | A kind of asphalt modifier and modifying asphalt with cold resistance energy | |
| CN100567399C (en) | A kind of rubber powder modified asphalt and working method thereof | |
| CN103421222B (en) | Rubber and plastic alloy asphalt modifier | |
| CN101475746A (en) | Waste asphalt reclaiming agent and preparation thereof | |
| CN113429802A (en) | High-content rubber powder-SBS (styrene butadiene styrene) composite modified asphalt and preparation method thereof | |
| CN104830076B (en) | A kind of preparation method of scrap rubber cracking conversion modified pitch | |
| CN104292598B (en) | A kind of anti-rut agent and the asphalt containing the anti-rut agent | |
| CN105385179B (en) | Waste sole rubber powder modified asphalt and preparation method thereof | |
| CN103756341A (en) | High-toughness waste rubber asphalt and preparation method thereof | |
| CN105153511A (en) | Modified asphalt mixture modifier and preparation method therefor | |
| CN106674589B (en) | Method for desulfurizing waste tire rubber powder by using waste edible oil and preparation method of modified asphalt | |
| CN104693821A (en) | Bituminous mixture using DVS (direct vat set) high-adhesion modifier and preparation method thereof | |
| CN105482474B (en) | Low-viscosity rubber powder modified asphalt and preparation method thereof | |
| CN110684362B (en) | Bio-based asphalt modifier and preparation method thereof | |
| CN105384956A (en) | Rubber powder subjected to surface activation and preparation method and application thereof | |
| CN102952293A (en) | Compound rubber powder modifying agent as well as preparation method and application method thereof | |
| CN102268188A (en) | High viscosity asphalt additive, and preparation method and application thereof | |
| CN104693823A (en) | Direct-vat type high-adhesion bituminous mixture modifier and preparation method thereof | |
| CN102603230B (en) | High-concentration rubber powder modified asphalt mixture and preparation method thereof | |
| CN101348350A (en) | Waste rubber powder composite modified asphalt and preparation thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |