CN103589174A - Method for preparing road asphalt from scrap tire rubber powder - Google Patents
Method for preparing road asphalt from scrap tire rubber powder Download PDFInfo
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- CN103589174A CN103589174A CN201310417564.0A CN201310417564A CN103589174A CN 103589174 A CN103589174 A CN 103589174A CN 201310417564 A CN201310417564 A CN 201310417564A CN 103589174 A CN103589174 A CN 103589174A
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Abstract
The invention relates to a method for preparing road asphalt from scrap tire rubber powder. The method comprises the following steps: placing 100-200 meshes of rubber powder into a stirrer, stirring, weighing maleic anhydride which accounts for 0.02-1.0 percent of the rubber powder, dissolving by using water, rapidly adding into the stirrer, stirring for 0.5-1 hour at 100-120 DEG C, then adding 2-hydroxyethyl methacrylate which accounts for 0.01-2.0 percent of the powder rubber, further stirring, and drying to obtain surface modified rubber powder; and heating matrix asphalt tilling melting, adding the rubber powder obtained by pretreatment under the condition of continuously stirring, treating by using a stainless steel colloid grinder, carrying out heat preservation at 120-150 DEG C and developing for 30 minutes. Relative to matrix asphalt, the compound asphalt has the characteristics that the needle penetration is remarkably reduced, the softening point is improved and the ductility at low temperature of 5 DEG C is remarkably improved, so that the modified asphalt has relatively good stability and low-temperature anti-cracking performance compared with the matrix asphalt, and the storage stability is also improved.
Description
Technical field
The present invention relates to a kind of method of junked tire recycling, relate in particular to a kind of novel process of utilizing junked tire to prepare fine glue powder, belong to junked tire and recycle field.
Background technology
Along with the develop rapidly of automotive industry and road haulage, the junked tire situation that pile up like a mountain is more and more serious.The junked tire that pile up like a mountain not only has obvious pollution problem, but also has serious disaster hidden-trouble.The danger more serious than fire is polluted underground water source, once polluted underground water source, by the existence of all biologies of entail dangers to.Therefore, EU member country to 2006 is year by total ban landfill disposal junked tire.The method that day by day serious junked tire is processed problem is all urgently being sought to solve by many international major companies, national governments and local government.Since the seventies, industrially developed country is having a great development aspect the second stage employ of junked tire, especially since the nineties, in succession work out the technique of utilizing junked tire to prepare rubber powder or fine glue powder, and be widely used in the fields such as material of construction, rubber item, road bitumen, polymer composite.In rubber powder pitch prepared by junked tire, prepare rubber asphalt, more durable and inexpensive than plain asphalt the inside, can also reduce noise, improve wear resistance and the winter hardiness of road, can extend pavement life, and shorten drag distance.Thereby applying of appts of modified asphalt by utilizing waste tyre rubber powder has important engineering significance and economy, environmental protection and social benefit.
But appts of modified asphalt by utilizing waste tyre rubber powder remains in problems such as stability in storagies, being better than shoddy is the rubber powder through over cure, directly in pitch, be difficult to swelling and dispersion, therefore cause the stability in storage of rubber powder modified asphalt poor, therefore, key issue is how to make uniform and stable being dispersed in pitch of waste rubber.In US6387965, utilize shoddy and organic solvent or aromatic hydrocarbon oil to stir to make its degraded at 150-300 ℃, then mix pitch, but its complex process, cost are higher, and in a large number with an organic solvent, environment is caused to certain pollution.In patent CN1528823, Polymer SBS (styrene-butadiene-styrene) is added to high-content rubber powder and asphalt system, to increase the rubber content of modifying asphalt, but this technique is due to rubber powder too high levels, system viscosity is larger, implemented certain difficulty, and just increased rubber powder consumption, fundamentally do not solve the problem of rubber powder dispersiveness.
The present invention, for overcoming the problems referred to above, provides a kind of method of rubber powder modified asphalt, has solved junked tire and has reclaimed problem, can prepare the rubber powder modified asphalt that stability in storage is good again.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of method of utilizing waste-tyre rubber-powder to prepare modified pavement asphalt is provided, the method stability in storage is good, is suitable for producing in enormous quantities.The present invention produces and comprises the following steps:
(1) get 100-200 order rubber powder and be placed in agitator, stirring velocity is 400-500r/min.Take the maleic anhydride of 0.02%-1.0% rubber powder quality, by water dissolution, add rapidly agitator, 100-120 ℃ is stirred 0.5-1h, after add the 2-hydroxyethyl methacrylate of 0.01%-2.0% rubber powder quality, continue to stir 0.5-1h.After oven dry, obtain surface modification rubber powder;
(2) by matrix pitch heating and melting at 110-150 ℃, under constantly stirring, add gradually the rubber powder that in step (1), pre-treatment obtains, stirring velocity is 600-800 r/min, stirs 1-2h;
(3) by the product in step (2) through stainless steel colloidal mill, insulation 120-150 ℃, grows 30min, prepares waste tyre rubber powder composite modified asphalt.
The above rubber powder is to be obtained by screening through cryogenic freezing fragmentation by junked tire;
Described matrix pitch is commercially available 90# pitch;
Rubber powder consumption is the 10%-30% of asphalt quality;
The penetration degree of basis bitumen and modified bitumen, softening temperature and ductility are measured according to GB/T4509, GB/T4507 and GB/T4508 method respectively, and the storage stability of modifying asphalt tests to characterize by segregation, and the difference of top and the bottom softening temperature is the smaller the better.The performance index of basis bitumen and modified bitumen are as follows:
As can be seen from the table, composite asphalt obviously reduces with respect to matrix pitch penetration degree, and softening temperature improves, and low temperature (5 ℃) extensibility obviously improves, illustrate that modifying asphalt is than matrix pitch oily better stability and low-temperature cracking-resistance, storage stability also increases.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described, but embodiment does not limit the present invention.
embodiment 1
(1) get 100 order rubber powders and be placed in agitator, stirring velocity is 400r/min.Take the maleic anhydride of 0.02% rubber powder quality, by water dissolution, add rapidly agitator, 100 ℃ are stirred 1h, after add the 2-hydroxyethyl methacrylate of 0.01% rubber powder quality, continue to stir 1h.After oven dry, obtain surface modification rubber powder;
(2) by matrix pitch heating and melting at 110 ℃, under constantly stirring, add gradually the rubber powder that in step (1), pre-treatment obtains, stirring velocity is 600r/min, stirs 2h;
(3) by the product in step (2) through stainless steel colloidal mill, be incubated 120 ℃, grow 50min, prepare waste tyre rubber powder composite modified asphalt.
embodiment 2
(1) get 150 order rubber powders and be placed in agitator, stirring velocity is 450r/min.Take the maleic anhydride of 0.05% rubber powder quality, by water dissolution, add rapidly agitator, 110 ℃ are stirred 0.8h, after add the 2-hydroxyethyl methacrylate of 1.0% rubber powder quality, continue to stir 0.8h.After oven dry, obtain surface modification rubber powder;
(2) by matrix pitch heating and melting at 130 ℃, under constantly stirring, add gradually the rubber powder that in step (1), pre-treatment obtains, stirring velocity is 700 r/min, stirs 1.5h;
(3) by the product in step (2) through stainless steel colloidal mill, be incubated 140 ℃, grow 40min, prepare waste tyre rubber powder composite modified asphalt.
embodiment 3
(1) get 200 order rubber powders and be placed in agitator, stirring velocity is 500r/min.Take the maleic anhydride of 1.0% rubber powder quality, by water dissolution, add rapidly agitator, 120 ℃ are stirred 0.5h, after add the 2-hydroxyethyl methacrylate of 2.0% rubber powder quality, continue to stir 0.5h.After oven dry, obtain surface modification rubber powder;
(2) by matrix pitch heating and melting at 150 ℃, under constantly stirring, add gradually the rubber powder that in step (1), pre-treatment obtains, stirring velocity is 800 r/min, stirs 1h;
(3) by the product in step (2) through stainless steel colloidal mill, be incubated 150 ℃, grow 30min, prepare waste tyre rubber powder composite modified asphalt.
Claims (7)
1. utilize waste-tyre rubber-powder to prepare a method for road bitumen, it is characterized in that: concrete steps are:
(1) get 100-200 order rubber powder and be placed in agitator, stirring velocity is 400-500r/min,
Take the maleic anhydride of 0.02%-1.0% rubber powder quality, by water dissolution, add rapidly agitator, 100-120 ℃ is stirred 0.5-1h, after add the 2-hydroxyethyl methacrylate of 0.01%-2.0% rubber powder quality, continue to stir 0.5-1h, after oven dry surface modification rubber powder;
(2) by matrix pitch heating and melting at 110-150 ℃, under constantly stirring, add gradually the rubber powder that in step (1), pre-treatment obtains, stirring velocity is 600-800 r/min, stirs 1-2h;
(3) by the product in step (2) through stainless steel colloidal mill, insulation 120-150 ℃, grows 30min, prepares waste tyre rubber powder composite modified asphalt.
2. the method for utilizing waste-tyre rubber-powder to prepare road bitumen as claimed in claim 1, is characterized in that: described rubber powder is to be obtained by screening through cryogenic freezing fragmentation by junked tire.
3. the method for utilizing waste-tyre rubber-powder to prepare road bitumen as claimed in claim 1, is characterized in that:
Described matrix pitch is commercially available 90# pitch.
4. the method for utilizing waste-tyre rubber-powder to prepare road bitumen as claimed in claim 1, is characterized in that:
The 10%-30% that described rubber powder consumption is asphalt quality.
5. the method for utilizing waste-tyre rubber-powder to prepare road bitumen as claimed in claim 1, is characterized in that: concrete steps are:
(1) get 100 order rubber powders and be placed in agitator, stirring velocity is 400r/min,
Take the maleic anhydride of 0.02% rubber powder quality, by water dissolution, add rapidly agitator, 100 ℃ are stirred 1h, after add the 2-hydroxyethyl methacrylate of 0.01% rubber powder quality, continue to stir 1h, after oven dry surface modification rubber powder;
(2) by matrix pitch heating and melting at 110 ℃, under constantly stirring, add gradually the rubber powder that in step (1), pre-treatment obtains, stirring velocity is 600r/min, stirs 2h;
(3) by the product in step (2) through stainless steel colloidal mill, be incubated 120 ℃, grow 50min, prepare waste tyre rubber powder composite modified asphalt.
6. the method for utilizing waste-tyre rubber-powder to prepare road bitumen as claimed in claim 1, is characterized in that: concrete steps are:
(1) get 150 order rubber powders and be placed in agitator, stirring velocity is 450r/min,
Take the maleic anhydride of 0.05% rubber powder quality, by water dissolution, add rapidly agitator, 110 ℃ are stirred 0.8h, after add the 2-hydroxyethyl methacrylate of 1.0% rubber powder quality, continue to stir 0.8h,
After oven dry, obtain surface modification rubber powder;
(2) by matrix pitch heating and melting at 130 ℃, under constantly stirring, add gradually the rubber powder that in step (1), pre-treatment obtains, stirring velocity is 700 r/min, stirs 1.5h;
(3) by the product in step (2) through stainless steel colloidal mill, be incubated 140 ℃, grow 40min, prepare waste tyre rubber powder composite modified asphalt.
7. the method for utilizing waste-tyre rubber-powder to prepare road bitumen as claimed in claim 1, is characterized in that: concrete steps are:
(1) get 200 order rubber powders and be placed in agitator, stirring velocity is 500r/min,
Take the maleic anhydride of 1.0% rubber powder quality, by water dissolution, add rapidly agitator, 120 ℃ are stirred 0.5h, after add the 2-hydroxyethyl methacrylate of 2.0% rubber powder quality, continue to stir 0.5h, after oven dry surface modification rubber powder;
(2) by matrix pitch heating and melting at 150 ℃, under constantly stirring, add gradually the rubber powder that in step (1), pre-treatment obtains, stirring velocity is 800 r/min, stirs 1h;
(3) by the product in step (2) through stainless steel colloidal mill, be incubated 150 ℃, grow 30min, prepare waste tyre rubber powder composite modified asphalt.
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| CN201310417564.0A CN103589174B (en) | 2013-09-14 | 2013-09-14 | A kind of method utilizing waste-tyre rubber-powder to prepare road asphalt |
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| CN103589174B CN103589174B (en) | 2016-08-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114213855A (en) * | 2021-12-27 | 2022-03-22 | 江苏宝利路面材料技术有限公司 | Warm-mix modified rubber asphalt and preparation method thereof |
| CN114806481A (en) * | 2022-05-13 | 2022-07-29 | 韦尔通(厦门)科技股份有限公司 | Flame-retardant light-moisture dual-curing polyurethane hot melt adhesive and preparation method thereof |
| CN114837023A (en) * | 2022-07-04 | 2022-08-02 | 石家庄铁道大学 | Scrap tire rubber powder modified composite foundation bed structure based on high-speed railway foundation reinforced layer |
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2013
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114213855A (en) * | 2021-12-27 | 2022-03-22 | 江苏宝利路面材料技术有限公司 | Warm-mix modified rubber asphalt and preparation method thereof |
| CN114806481A (en) * | 2022-05-13 | 2022-07-29 | 韦尔通(厦门)科技股份有限公司 | Flame-retardant light-moisture dual-curing polyurethane hot melt adhesive and preparation method thereof |
| CN114837023A (en) * | 2022-07-04 | 2022-08-02 | 石家庄铁道大学 | Scrap tire rubber powder modified composite foundation bed structure based on high-speed railway foundation reinforced layer |
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Inventor after: Li Shufan Inventor after: Chen Xianlong Inventor after: Xiong Ying Inventor after: Ran Hua Inventor before: You Xiaoming Inventor before: Zhang Guodong Inventor before: Wang Xiantao Inventor before: Yan Yunfeng Inventor before: Wei Wenxiang |
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Effective date of registration: 20170405 Address after: Xishan District 650100 in Yunnan province Kunming City Shui Road No. 101 Liu Jia Ying District two building 1 floor office building 8 Room 805 Patentee after: Yunnan referendum Construction Group First Engineering Co., Ltd. Address before: 257335 Guangrao City, Dongying Province town of Rubber Industrial Park Patentee before: Shandong Yongtai Chemical Co., Ltd. |
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