CN104672393A - Surface grafting modification process for waste tire rubber powder for asphalt modification - Google Patents
Surface grafting modification process for waste tire rubber powder for asphalt modification Download PDFInfo
- Publication number
- CN104672393A CN104672393A CN201510038318.3A CN201510038318A CN104672393A CN 104672393 A CN104672393 A CN 104672393A CN 201510038318 A CN201510038318 A CN 201510038318A CN 104672393 A CN104672393 A CN 104672393A
- Authority
- CN
- China
- Prior art keywords
- rubber powder
- asphalt
- waste tyre
- technique
- modification
- 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.)
- Pending
Links
Landscapes
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention relates to a surface grafting modification process for waste tire rubber powder for asphalt modification. The surface grafting modification process specifically comprises the following steps: dispersing waste tire rubber powder in water, adding a certain amount of benzoyl peroxide and styrene, and stirring for 1-12 hours at constant temperature at 80-120 DEG C, wherein benzoyl peroxide accounts for 1.7-10% of the mass of the rubber powder, and styrene accounts for 1-30% of the mass of the rubber powder. When the grafted rubber powder is adopted as an asphalt modifier for preparing rubber powder modified asphalt by using a wet method modification process, the property of the modified asphalt can be conditioned and controlled. The surface grafting modification process is simple to operate and low in cost, and main properties such as the needle penetration degree, the ductility, the softening point and the like of the rubber powder modified asphalt can be effectively conditioned and controlled.
Description
Technical field
The present invention relates to a kind of surface graft modification technique of asphalt modification waste tyre rubber powder.Specifically adopt the method for graft polymerization that polystyrene segment is grafted to waste tyre rubber powder surface, to regulate and control the Technology of rubber powder modified asphalt performance.
Background technology
Along with the fast development of automobile industry and the progressively raising of national automobile pollution, the damaged tire that China produces every year is with the speed increase of about 6%-8%.According to statistics, the raw damaged tire 2.99 hundred million (being roughly equal to 1,080 ten thousand tons) of China's common property in 2013, has become and has produced the maximum country of damaged tire in the world.Damaged tire complicated component and not easily degrading, bulk deposition not only land occupation resource in environment, also can cause environmental pollution.And China's rubber sources is very deficient, therefore, improve a problem urgently to be resolved hurrily is become to the comprehensive utilization ratio of junked tire resource.
Petroleum pitch is used as road pavement material and has long history, but along with the increase of volume of transport, people have higher requirement for Pavement Performance.Research shows, adopt waste tyre rubber powder making modifying asphalt can improve high-temperature stability, low-temperature cracking-resistance, the anti-aging and weather resistance of pitch, and effectively can reduce pavement noise, reduce pavement reflecting, improve Pavement Skid Resistance effect, cause the common concern of people.But due to factors such as rubber powder and bitumen compatibility differences, limit the application of rubber powder modified asphalt.By polystyrene segment is grafted to waste tyre rubber powder surface, the surface mesh structure being similar to SBS modifying asphalt can be formed between rubber powder and pitch, thus improve the performance of rubber powder modified asphalt.
Summary of the invention
The invention provides a kind of easy, asphalt modification waste tyre rubber powder surface graft modification technique of being easy to industrial application.
The technical solution used in the present invention is: be dispersed in water by waste tyre rubber powder, add a certain amount of initiator and surface-modifying agent, constant temperature stirs 1-12 hour, temperature is 80-120 DEG C, initiator amount accounts for the 1.7%-10% of vinylbenzene consumption, and surface-modifying agent consumption is the 1%-300% of rubber powder quality.After reaction terminates, by waste tyre rubber powder suction filtration, washing, dry, weigh, record quality percentage of grafting, obtained grafting rubber powder.Grafting rubber powder is prepared rubber powder modified asphalt by wet-process modified technique, and detects its main performance index.In rubber powder modified asphalt, the incorporation of waste tyre rubber powder is 12.5wt%-21wt%.
Described initiator is Benzoyl Peroxide, and consumption is the 1.7%-10% of vinylbenzene consumption.
Described surface-modifying agent is vinylbenzene, and consumption is the 1%-300% of rubber powder quality.
Described temperature of reaction is 80-120 DEG C.
Quality before described quality percentage of grafting=(after grafting before quality-grafting quality)/grafting.
The particle diameter of described waste tyre rubber powder is 16-60 order, and rubber powder source is Waste tyre crushing.
The described reaction times is 1-12 hour.
Described matrix pitch is road bitumen.
The techniqueflow chart of described waste tyre rubber powder modifying asphalt wet-process modified technique is shown in Fig. 1.
Described pitch main performance index comprises 25 DEG C of penetration degrees, 5 DEG C of ductilities, softening temperatures.25 DEG C of penetration degree is the ability representing pitch soft or hard degree and denseness, opposing shear fracture, reflects the index of the solution solvent viscosity ratio of pitch under certain condition.5 DEG C of ductilities represent pitch anti-tensile tensile strength, and ductility is larger, and low-temperature performance is better; Softening temperature represents high temperature stability performance, and softening temperature is larger, and high temperature stability performance is better.
Tool of the present invention has the following advantages:
1. realize the surface modification to waste tyre rubber powder by the method for graft polymerization.Employing vinylbenzene is grafted monomer, and benzoyl peroxide is initiator, at a certain temperature polystyrene segment is grafted to waste tyre rubber powder surface.Rubber powder after grafting is applied to modifying asphalt, can makes between rubber powder and pitch, to form the surface mesh structure being similar to SBS modifying asphalt, make rubber powder compatible with Bituminous stabilized, thus improve performance and the stability of modifying asphalt.
2. regulate and control the performance index of rubber powder modified asphalt.By the polystyrene segment at vulcanized rubber powder grafting different ratios, the consistency of regulation and control rubber powder and pitch, thus realize the regulation and control of modifying asphalt 25 DEG C of penetration degrees, 5 DEG C of ductilities and softening temperature.
3. easy handling and industrial applications.Treatment process of the present invention is simple, and with low cost, easy handling, can realize industrial applications.
Accompanying drawing explanation
Fig. 1 is the wet-process modified technique of rubber powder modified asphalt.
Embodiment
The feature that the invention is further illustrated by the following examples, but the present invention is not limited to following example.
Embodiment 1
100g waste tyre rubber powder, 5g benzoyl peroxide and 300mL vinylbenzene are scattered in 400mL water, reaction 12 hours under 120 DEG C of constant temperature stir.Reacted waste tyre rubber powder is filtered, washed, dries to constant mass for 80 DEG C, obtained modified glue powder.Recording rubber powder quality percentage of grafting is 67.2%.Modified glue powder and shore sun No. 70 pitches are prepared rubber powder modified asphalt by wet-process modified technique, and the incorporation of waste tyre rubber powder is 21wt%, measures 25 DEG C of penetration degrees of modifying asphalt, 5 DEG C of ductilities and softening temperature.Recording 25 DEG C of penetration degrees is 42 (0.1mm), and 5 DEG C of ductilities are 7.6 (cm), and softening temperature is 67.4 (DEG C).
Embodiment 2
100g waste tyre rubber powder, 5g benzoyl peroxide and 300mL vinylbenzene are scattered in 400mL water, reaction 2 hours under 120 DEG C of constant temperature stir.Reacted waste tyre rubber powder is filtered, washed, dries to constant mass for 80 DEG C, obtained modified glue powder.Recording rubber powder quality percentage of grafting is 6.4%.Modified glue powder and shore sun No. 70 pitches are prepared rubber powder modified asphalt by wet-process modified technique, and the incorporation of waste tyre rubber powder is 21wt%, measures 25 DEG C of penetration degrees of modifying asphalt, 5 DEG C of ductilities and softening temperature.Recording 25 DEG C of penetration degrees is 43 (0.1mm), and 5 DEG C of ductilities are 7.4 (cm), and softening temperature is 65.6 (DEG C).
Embodiment 3
100g waste tyre rubber powder, 5g benzoyl peroxide and 300mL vinylbenzene are scattered in 400mL water, reaction 6 hours under 120 DEG C of constant temperature stir.Reacted waste tyre rubber powder is filtered, washed, dries to constant mass for 80 DEG C, obtained modified glue powder.Recording rubber powder quality percentage of grafting is 36.1%.Modified glue powder and shore sun No. 70 pitches are prepared rubber powder modified asphalt by wet-process modified technique, and the incorporation of waste tyre rubber powder is 21wt%, measures 25 DEG C of penetration degrees of modifying asphalt, 5 DEG C of ductilities and softening temperature.Recording 25 DEG C of penetration degrees is 49 (0.1mm), and 5 DEG C of ductilities are 11 (cm), and softening temperature is 68.5 (DEG C).
Embodiment 4
100g waste tyre rubber powder, 5g benzoyl peroxide and 200mL vinylbenzene are scattered in 400mL water, reaction 12 hours under 120 DEG C of constant temperature stir.Reacted waste tyre rubber powder is filtered, washed, dries to constant mass for 80 DEG C, obtained modified glue powder.Recording rubber powder quality percentage of grafting is 43.3%.Modified glue powder and shore sun No. 70 pitches are prepared rubber powder modified asphalt by wet-process modified technique, and the incorporation of waste tyre rubber powder is 21wt%, measures 25 DEG C of penetration degrees of modifying asphalt, 5 DEG C of ductilities and softening temperature.Recording 25 DEG C of penetration degrees is 46 (0.1mm), and 5 DEG C of ductilities are 9.2 (cm), and softening temperature is 67.5 (DEG C).
Embodiment 5
100g waste tyre rubber powder, 5g benzoyl peroxide and 200mL vinylbenzene are scattered in 400mL water, reaction 8 hours under 120 DEG C of constant temperature stir.Reacted waste tyre rubber powder is filtered, washed, dries to constant mass for 80 DEG C, obtained modified glue powder.Recording rubber powder quality percentage of grafting is 18.0%.Modified glue powder and shore sun No. 70 pitches are prepared rubber powder modified asphalt by wet-process modified technique, and the incorporation of waste tyre rubber powder is 12.5wt%, measures 25 DEG C of penetration degrees of modifying asphalt, 5 DEG C of ductilities and softening temperature.Recording 25 DEG C of penetration degrees is 41 (0.1mm), and 5 DEG C of ductilities are 8.3 (cm), and softening temperature is 65.9 (DEG C).
Embodiment 6
100g waste tyre rubber powder, 5g benzoyl peroxide and 100mL vinylbenzene are scattered in 400mL water, reaction 6 hours under 120 DEG C of constant temperature stir.Reacted waste tyre rubber powder is filtered, washed, dries to constant mass for 80 DEG C, obtained modified glue powder.Recording rubber powder quality percentage of grafting is 4.2%.Modified glue powder and shore sun No. 70 pitches are prepared rubber powder modified asphalt by wet-process modified technique, and the incorporation of waste tyre rubber powder is 21wt%, measures 25 DEG C of penetration degrees of modifying asphalt, 5 DEG C of ductilities and softening temperature.Recording 25 DEG C of penetration degrees is 40 (0.1mm), and 5 DEG C of ductilities are 7.4 (cm), and softening temperature is 69.2 (DEG C).
Embodiment 7
100g waste tyre rubber powder, 5g benzoyl peroxide and 100mL vinylbenzene are scattered in 400mL water, reaction 10 hours under 120 DEG C of constant temperature stir.Reacted waste tyre rubber powder is filtered, washed, dries to constant mass for 80 DEG C, obtained modified glue powder.Recording rubber powder quality percentage of grafting is 11.0%.Modified glue powder and shore sun No. 70 pitches are prepared rubber powder modified asphalt by wet-process modified technique, and the incorporation of waste tyre rubber powder is 21wt%, measures 25 DEG C of penetration degrees of modifying asphalt, 5 DEG C of ductilities and softening temperature.Recording 25 DEG C of penetration degrees is 45 (0.1mm), and 5 DEG C of ductilities are 8.9 (cm), and softening temperature is 67.9 (DEG C).
Embodiment 8
100g waste tyre rubber powder, 0.1g benzoyl peroxide and 1mL vinylbenzene are scattered in 400mL water, reaction 6 hours under 120 DEG C of constant temperature stir.Reacted waste tyre rubber powder is filtered, washed, dries to constant mass for 80 DEG C, obtained modified glue powder.Record rubber powder quality percentage of grafting and be less than 1%.Modified glue powder and shore sun No. 70 pitches are prepared rubber powder modified asphalt by wet-process modified technique, and the incorporation of waste tyre rubber powder is 21wt%, measures 25 DEG C of penetration degrees of modifying asphalt, 5 DEG C of ductilities and softening temperature.Recording 25 DEG C of penetration degrees is 42 (0.1mm), and 5 DEG C of ductilities are 7.3 (cm), and softening temperature is 65.9 (DEG C).
Claims (9)
1. the surface graft modification technique of an asphalt modification waste tyre rubber powder, concrete steps comprise: be dispersed in water by waste tyre rubber powder, add initiator profit surface-modifying agent, constant temperature stirs 1-12 hour, temperature is 80-120 DEG C, and initiator amount accounts for the 1.7%-10% of rubber powder quality, and surface-modifying agent consumption is the 1%-300% of rubber powder quality, after reaction terminates, quality measurement percentage of grafting.
2. the grafting rubber powder prepared of technique as claimed in claim 1.
3. a preparation technology for modifying asphalt, prepares rubber powder modified asphalt by grafting rubber powder according to claim 2 by wet-process modified technique, and detects its main performance index, and in rubber powder modified asphalt, the incorporation of damaged tire is 12.5wt%-21wt%.
4. the modifying asphalt prepared of technique as claimed in claim 3.
5. the surface graft modification technique of a kind of asphalt modification waste tyre rubber powder according to claim 1, it is characterized in that described surface-modifying agent is vinylbenzene, consumption is the 1%-300% of waste tyre rubber powder quality.
6. the preparation technology of modifying asphalt according to claim 3, is characterized in that described pitch is road bitumen.
7. the surface graft modification technique of a kind of asphalt modification waste tyre rubber powder according to claim 1, is characterized in that described temperature is 80-120 DEG C.
8. the surface graft modification technique of a kind of asphalt modification waste tyre rubber powder according to claim 1, is characterized in that the particle diameter of described waste tyre rubber powder is 16-60 order, preferably 40 orders, and rubber powder source is Waste tyre crushing.
9. the surface graft modification technique of a kind of asphalt modification waste tyre rubber powder according to claim 1, it is characterized in that described initiator is benzoyl peroxide, initiator amount is the 1.7%-10% of rubber powder quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038318.3A CN104672393A (en) | 2015-01-23 | 2015-01-23 | Surface grafting modification process for waste tire rubber powder for asphalt modification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510038318.3A CN104672393A (en) | 2015-01-23 | 2015-01-23 | Surface grafting modification process for waste tire rubber powder for asphalt modification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104672393A true CN104672393A (en) | 2015-06-03 |
Family
ID=53308019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510038318.3A Pending CN104672393A (en) | 2015-01-23 | 2015-01-23 | Surface grafting modification process for waste tire rubber powder for asphalt modification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104672393A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106432637A (en) * | 2016-06-24 | 2017-02-22 | 涂淑光 | Direct Vat Set reactive asphalt tackifier and preparation method thereof |
| CN108530923A (en) * | 2018-04-28 | 2018-09-14 | 广东诚泰投资有限公司 | A kind of high-temperature stability pitch |
| CN109294256A (en) * | 2018-10-19 | 2019-02-01 | 湖北津泰环保科技有限公司 | A kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance |
| CN109337394A (en) * | 2018-10-19 | 2019-02-15 | 湖北津泰环保科技有限公司 | A kind of preparation method of the rubber powder modified asphalt of highly anti-fatigue cracking resistance |
| CN109337393A (en) * | 2018-10-19 | 2019-02-15 | 湖北津泰环保科技有限公司 | A kind of shoddy composite modified asphalt and preparation method thereof |
| 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 |
| CN111607140A (en) * | 2020-07-03 | 2020-09-01 | 苏州科技大学 | Preparation method and application of semi-interpenetrating network structure polystyrene/waste tire rubber powder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1974621A (en) * | 2006-12-07 | 2007-06-06 | 武汉工程大学 | Modified rubber powder and its prepn and use |
| WO2009017262A1 (en) * | 2007-07-27 | 2009-02-05 | Korea Kumho Petrochemical Co., Ltd. | Foaming asphalt modifier |
| CN101550276A (en) * | 2008-10-15 | 2009-10-07 | 江苏宝利沥青股份有限公司 | Crumb rubber modified asphalt and prepration method thereof |
| CN103145882A (en) * | 2013-03-13 | 2013-06-12 | 南开大学 | Surface oxidation modification process for waste tire rubber powder for modification of asphalt |
-
2015
- 2015-01-23 CN CN201510038318.3A patent/CN104672393A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1974621A (en) * | 2006-12-07 | 2007-06-06 | 武汉工程大学 | Modified rubber powder and its prepn and use |
| WO2009017262A1 (en) * | 2007-07-27 | 2009-02-05 | Korea Kumho Petrochemical Co., Ltd. | Foaming asphalt modifier |
| CN101550276A (en) * | 2008-10-15 | 2009-10-07 | 江苏宝利沥青股份有限公司 | Crumb rubber modified asphalt and prepration method thereof |
| CN103145882A (en) * | 2013-03-13 | 2013-06-12 | 南开大学 | Surface oxidation modification process for waste tire rubber powder for modification of asphalt |
Non-Patent Citations (4)
| Title |
|---|
| 何永峰等: "《胶粉生产及其应用——废旧橡胶资源化新技术》", 31 December 2001, 中国石油出版社 * |
| 刘玉强等: "胶粉的表面改性", 《弹性体》 * |
| 张宝昌等: "核壳橡胶粒子改性沥青的高温贮存稳定性", 《东北大学学报(自然科学版)》 * |
| 熊晋华: "关于废橡胶粉改性沥青配比的探讨", 《科学之友》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106432637A (en) * | 2016-06-24 | 2017-02-22 | 涂淑光 | Direct Vat Set reactive asphalt tackifier and preparation method thereof |
| CN108530923A (en) * | 2018-04-28 | 2018-09-14 | 广东诚泰投资有限公司 | A kind of high-temperature stability pitch |
| CN109294256A (en) * | 2018-10-19 | 2019-02-01 | 湖北津泰环保科技有限公司 | A kind of rubber powder modified asphalt of highly anti-fatigue cracking resistance |
| CN109337394A (en) * | 2018-10-19 | 2019-02-15 | 湖北津泰环保科技有限公司 | A kind of preparation method of the rubber powder modified asphalt of highly anti-fatigue cracking resistance |
| CN109337393A (en) * | 2018-10-19 | 2019-02-15 | 湖北津泰环保科技有限公司 | A kind of shoddy composite modified asphalt and preparation method thereof |
| 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 |
| CN111607140A (en) * | 2020-07-03 | 2020-09-01 | 苏州科技大学 | Preparation method and application of semi-interpenetrating network structure polystyrene/waste tire rubber powder |
| CN111607140B (en) * | 2020-07-03 | 2022-04-05 | 苏州科技大学 | Preparation method and application of semi-interpenetrating network structure polystyrene/waste tire rubber powder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104672393A (en) | Surface grafting modification process for waste tire rubber powder for asphalt modification | |
| CN103145882B (en) | A kind of Surface Oxidation Modification technique of asphalt modification waste tyre rubber powder | |
| CN101235172B (en) | Asphalt pavement rubber plastic composite anti-rut agent and preparation method thereof | |
| CN104725883A (en) | High-viscosity high-elasticity asphalt based on surface modification of rubber particles, and high-viscosity high-elasticity SMA (stone mastic asphalt) mixture based on surface modification of rubber particles and preparing method thereof | |
| CN103756341A (en) | High-toughness waste rubber asphalt and preparation method thereof | |
| CN104212191A (en) | Laminated nanometer clay/waste rubber power composite modified asphalt material and preparation method thereof | |
| CN104448457A (en) | Rubber-plastic composite asphalt modifier, rubber-plastic composite modified asphalt and preparation method of rubber-plastic composite modified asphalt | |
| CN100445333C (en) | Modified asphalt and method for making same | |
| CN103396043B (en) | Warmly-mixed TOR (trans-polyoctenamer rubber reactive modifier) rubber asphalt mixture and preparation method thereof | |
| CN106242378A (en) | Hot in-plant reclaimed asphalt mixture and preparation method thereof | |
| CN101993600A (en) | Nanoparticle modified asphalt and preparation method thereof | |
| CN114380539B (en) | Asphalt cold-patch material prepared from recycled glass fiber reinforced plastics | |
| CN104311943B (en) | A kind of rubber modifier, rubber modified mixes and preparation method thereof | |
| CN103396669B (en) | Microwave desulfurization cracking rubber powder of waste tire composite modified asphalt and preparation method thereof | |
| CN101445658B (en) | Natural compound modified asphalt and preparation method thereof | |
| CN103360774A (en) | Asphaltized rubber modified asphalt and preparation method thereof | |
| CN106118078A (en) | A kind of Colophonium warm mix modifying agent and preparation method thereof | |
| KR100348758B1 (en) | Asphalt modifier of styrene-butadiene-styrene block copolymer and styrene-butadiene latex | |
| CN105130280A (en) | Rubber asphalt mixture | |
| CN102863805A (en) | Modified Qingchuan rock asphalt and preparation method thereof | |
| CN111269360A (en) | Methyl methacrylate polymerization graft modification process for waste rubber powder | |
| CN107200511A (en) | Nano material modified rubber asphalt and preparation method thereof | |
| CN103232709B (en) | A kind of rubber powder modified asphalt linking agent and its preparation method | |
| CN111205661B (en) | Rubber asphalt modifier, modified asphalt, asphalt mixture, and preparation and application thereof | |
| CN111073319B (en) | Composite natural rock asphalt modifier, preparation method and application |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |
|
| WD01 | Invention patent application deemed withdrawn after publication |