CN1148417C - Polystyrene modified asphalt material with high high-temperature storage stability - Google Patents
Polystyrene modified asphalt material with high high-temperature storage stability Download PDFInfo
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- CN1148417C CN1148417C CNB011132655A CN01113265A CN1148417C CN 1148417 C CN1148417 C CN 1148417C CN B011132655 A CNB011132655 A CN B011132655A CN 01113265 A CN01113265 A CN 01113265A CN 1148417 C CN1148417 C CN 1148417C
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Abstract
The present invention relates to polystyrene (PS) modified asphalt material for roads. The asphalt modifier is made from polystyrene (PS), thermoplastic elastic body polystyrene-polybutadiene-polystyrenetriblock copolymer (SBS), styrene-butadiene rubber (SBR) and sulfur, wherein the styrene phase of the SBS provides a certain compatible micro region, and butadiene phase of the styrene-butadiene rubber provides sufficient coating. Thus, the high temperature storage stability of the PS modified asphalt is enhanced. The asphalt material prepared by the present invention has the advantages of good performance, stable high temperature storage, low production cost, simple production technology and convenient operation, and is road modified asphalt with economy and environment protection.
Description
The present invention relates to a kind of polystyrene (PS) modified asphalt material that is used for road.
Along with the quickening of China's expressway construction paces, more and more higher with the bituminous performance requriements to road.But the petroleum pitch temperature sensitivity is big, fragile under low temperature splitting, and high temperature easily flows, and ageing-resistant performance is relatively poor, need improve the bituminous performance by modification, thereby promotes anti-rut in road surface and cracking resistance ability significantly, so that satisfy harsh day by day transport need.Method to asphalt modification has multiple, as add polymkeric substance, properties-correcting agent such as tensio-active agent and sulphur, wherein be added into about 5% polymkeric substance in the pitch simply, promptly can overcome the above-mentioned deficiency of bituminous to a certain extent, so polymer blending modification is the effective way that pitch is realized high performance.
The polymkeric substance that is used for modifying asphalt mainly can be divided into thermoplastic elastomer, plastics, rubber etc., (USP 4 for wherein relevant styrene butadiene triblock polymer (SBS), 145,322, USP 5371121), (USP 3 for styrene-butadiene rubber(SBR) (SBR), 634,293), (USP 5,494 for polyethylene (PE), 966) etc. the research of modifying asphalt is more, and has obtained widespread use.And polystyrene (PS) is as general-purpose plastics, and output is very big, annually produces a large amount of discarded PS, causes white pollution, it as asphalt modifier, not only is expected to improve the bituminous performance, and can utilizes a large amount of discarded PS to reach the purpose of environment protection again.But the phenyl ring group on the PS molecular chain has been given its molecule chain rigidity, thereby with respect to the PE of flexible macromolecule chain, PS is added into goes the comparison difficulty in the pitch, and when amount ratio was big, PS just had tangible separation and separates out.Even by high-shear PS is distributed in the pitch and goes, but because itself and bituminous solubility parameter differ greatly, thereby can be separated during high temperature storage, high-temperature storage stability is bad.
In order to address the above problem, people (WO 97/30121) such as Liang Z.Z. discover, by adding SBS Thermoplastic Elastomer or vinylbenzene-(ethene-iso-butylene)-styrol copolymer (SEBS) and reaction modifier such as sulphur etc., make the high-temperature storage stability of PS modified asphalt material significantly improve, but because SBS large usage quantity, obtained that the bituminous material cost is higher, therefore there is not practical value.
The object of the present invention is to provide a kind ofly can reduce cost and take into account high temperature performance, require to adopt the PS modified asphalt material of the high temperature storage stable of different rubber proportionings according to actual Pavement Performance; And provide a kind of novel method of improving the particle modified bituminous high-temperature storage stability of rigidity plastics.
Asphalt modifier of the present invention is made up of polystyrene (PS), thermoplastic elastomer polystyrene-poly divinyl-polystyrene (SBS), styrene-butadiene rubber(SBR) (SBR), sulphur, wherein the vinylbenzene among the SBS provides certain compatible microcell mutually; the divinyl of styrene-butadiene rubber(SBR) provides sufficient parcel mutually, thereby makes the high-temperature storage stability of PS modifying asphalt be improved.Wherein the consumption of PS is in 3～10% (weight ratios), require to change the weight proportion of SBR and SBS in addition according to actual road surface, changed to 90.0: 10.0 from 10.0: 90.0, the rubber total amount depends on the PS consumption, generally be controlled at 1～10% (weight ratio), be preferably in 2～8% (weight ratios).Compare with method of modifying in the past, the present invention has following remarkable advantage: (1) has effectively improved the high-temperature storage stability of PS modifying asphalt, and taken into account the improvement of the low-temperature performance of PS modifying asphalt, the road that meets China the Ministry of Communications regulation is used bituminous material performance index (i.e. " Chinese highway Modified Bitumen Pavement construction technique normalizing " JTJ036-1998) (2) because the price of SBR is cheaper than SBS, itself and SBS also are used as the dispersion agent of PS modifying asphalt, greatly reduce the cost of modifying asphalt.
PS of the present invention can be coventional type, regeneration type, high shock resistance type (HIPS) etc.SBR can be the emulsion polymerized styrene butadiene rubber of homemade various series, as 1000,1100,1500,1600,1700,1800 series etc., is preferably the rubber of not filling carbon black, i.e. 1000,1500 series, also solution polymerized butadiene styrene rubber; SBS can be the various trades mark of home-made, as 4303,4402,1301,1401 etc.
Its production process of modified asphalt material of the present invention is such: earlier in whipping device, pitch is heated to about 160 ℃～200 ℃ to mobile fully, then PS, SBS, SBR and sulphur are joined in the pitch and (also can earlier SBS, SBR be pre-mixed), mix 20～120min down at 160 ℃～200 ℃, holding temperature is constant, remix 20～80min get final product the modifying asphalt finished product.
Getting example below is must further specify the present invention, rather than limits the scope of the invention.
Embodiment 1～5:
600 gram Jiangyin 90 pitches are packed in the small containers, it is mobile fully to be heated to pitch, the PS (raising sub-BASF AG produces), 18.0 that adds 18.0 grams then restrains by the SBS (trade mark 4303,1301, Beijing Yanshan Petrochemical Company produces) and the SBR (trade mark 1500, the production of Shandong Qilu Petrochemical company) rubber stock of forming, start small-sized mixing equipment, be 180 ℃ in temperature and stir 45min down, in pitch, mix fully to polymkeric substance, the sulphur that adds 0.9 gram again, controlled temperature is constant, mixes 100min.Products obtained therefrom is pressed performance index such as GB/T4508, GB/T4507, JTJ052/T660, ASTM D4402 test extensibility, softening temperature, resolution, viscosity respectively, the results are shown in following table.
| Example | PS， ％wt | SBS， ％wt | SBR， ％wt | Softening temperature, ℃ @5 ℃/min | Extensibility, cm @5 ℃ | Viscosity, cP @135,60rpm | Resolution, ℃ (48h, 163 ℃) | ||
| The upper strata | Lower floor | Difference | |||||||
| 1 | 3 | 2.0 | 1.0 | 73.5 | 32.5 | 1975 | 68.5 | 68.5 | 0 |
| 2 | 3 | 3.0 | 0 | 59.1 | 27.0 | 1500 | 61.0 | 61.2 | 0.2 |
| 3 | 3 | 1.5 | 1.5 | 60.7 | 14.2 | 1333 | 59.9 | 60.0 | 0.1 |
| 4 | 3 | 1.0 | 2.0 | 68.5 | 35.0 | 2042 | 60.7 | 61.0 | 0.3 |
| 5 | 2 | 0 | 2 | 54.5 | 17.0 | - | 52.5 | 57.0 | 4.5 |
Annotate: the SBS in the example 1 is SBS4303, and the SBS in all the other examples is SBS1301
Claims (5)
1, the polystyrene modified asphalt material of high temperature storage stable, the properties-correcting agent that it is characterized in that this bituminous material is by polystyrene, thermoplastic elastomer polystyrene-poly divinyl-polystyrene triblock copolymer, styrene-butadiene rubber(SBR) and sulphur are formed.
2, the polystyrene modified asphalt material of high temperature storage stable according to claim 1, the weight percent that it is characterized in that the polystyrene consumption is 3～10%.
3, the modified asphalt material of high temperature storage stable according to claim 1, the weight proportion that it is characterized in that thermoplastic elastomer polystyrene-poly divinyl-polystyrene triblock copolymer and styrene-butadiene rubber(SBR) is 10.0: 90.0～90.0: 10.0.
4, the modified asphalt material of high temperature storage stable according to claim 1, the weight percent that it is characterized in that thermoplastic elastomer polystyrene-poly divinyl-polystyrene triblock copolymer and styrene-butadiene rubber(SBR) consumption is 1～10%; Sulfur consumption is that the weight percent of thermoplastic elastomer polystyrene-poly divinyl-polystyrene triblock copolymer and styrene-butadiene rubber(SBR) consumption is 1～20%.
5, the modified asphalt material of high temperature storage stable according to claim 4, the weight percent that it is characterized in that thermoplastic elastomer polystyrene-poly divinyl-polystyrene triblock copolymer and styrene-butadiene rubber(SBR) consumption is 2～8%;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011132655A CN1148417C (en) | 2001-07-05 | 2001-07-05 | Polystyrene modified asphalt material with high high-temperature storage stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011132655A CN1148417C (en) | 2001-07-05 | 2001-07-05 | Polystyrene modified asphalt material with high high-temperature storage stability |
Publications (2)
| Publication Number | Publication Date |
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| CN1324897A CN1324897A (en) | 2001-12-05 |
| CN1148417C true CN1148417C (en) | 2004-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011132655A Expired - Fee Related CN1148417C (en) | 2001-07-05 | 2001-07-05 | Polystyrene modified asphalt material with high high-temperature storage stability |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448934C (en) * | 2005-06-28 | 2009-01-07 | 上海群康沥青科技有限公司 | Asphalt composition and its production process |
| CN100412136C (en) * | 2005-12-24 | 2008-08-20 | 深圳清华大学研究院 | Asphalt modified mother material and preparation process for modified asphalt thereof |
| CN101177534A (en) * | 2006-11-09 | 2008-05-14 | 深圳市海川实业股份有限公司 | High-viscosity bitumen modifier |
| CN102504756B (en) * | 2011-09-29 | 2013-08-21 | 广东易山重工股份有限公司 | Road gap-filling cement and preparation method thereof |
| CN105440711A (en) * | 2015-12-26 | 2016-03-30 | 廖鹏程 | Preparation process of anti-ageing matrix asphalt |
| CN109423060A (en) * | 2017-08-30 | 2019-03-05 | 罗雪洁 | A kind of stable Polystyrene asphalt water-proof coiled material material composition of high temperature resistance |
| CN109762354A (en) * | 2019-01-17 | 2019-05-17 | 南通市港闸市政开发区道路工程有限公司 | A kind of modified pitch and preparation method thereof |
| CN111925662B (en) * | 2020-08-24 | 2022-07-12 | 山东京博中聚新材料有限公司 | Polystyrene emulsion for modified emulsified asphalt and preparation method and application thereof |
| CN113801489B (en) * | 2021-10-19 | 2023-05-23 | 广州高速运营管理有限公司 | Rubber powder modified asphalt for pavement repair and preparation method thereof |
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- 2001-07-05 CN CNB011132655A patent/CN1148417C/en not_active Expired - Fee Related
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| CN1324897A (en) | 2001-12-05 |
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Owner name: JIANGSU BAOLI ASPHALT CO., LTD. Free format text: FORMER OWNER: SHANGHAI JIAOTONG UNIV. Effective date: 20080118 |
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Effective date of registration: 20080118 Address after: Jiangyin City Industrial Park Patentee after: Jiangsu Baoli Asphalt Co., Ltd. Address before: No. 1954, Huashan Road, Shanghai Patentee before: Shanghai Jiao Tong University |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040505 Termination date: 20170705 |
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