CN101280115B - High-performance composite modified asphalt material and preparation thereof - Google Patents
High-performance composite modified asphalt material and preparation thereof Download PDFInfo
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- CN101280115B CN101280115B CN2008100708467A CN200810070846A CN101280115B CN 101280115 B CN101280115 B CN 101280115B CN 2008100708467 A CN2008100708467 A CN 2008100708467A CN 200810070846 A CN200810070846 A CN 200810070846A CN 101280115 B CN101280115 B CN 101280115B
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Abstract
The invention discloses a high-performance composite modified asphalt material and the preparation method. The high-performance composite modified asphalt material of the invention comprises the following components by weight percentage: 76 to 90% of asphalt, 5 to 15% of compatibilize, 2.5 to 4% of SBS, 2 to 4.5% of SBR, and 0.5 to 1.5% of polymer additive. The composite modified asphalt material of the invention not only improves the high and low temperature performances, construction performance and elastic recovery performance, but also can control the scope of softening points through ratio adjustment to make the softening points modest; through film oven aging (TFOT), rotating film oven aging (RTFOT) or 48h of storage at 163 DEG C, the softening points meet the requirement that the increase is lower than or equal to 6 DEG C, and the decrease is lower than or equal to 2 DEG C so as to improve the anti-aging properties.
Description
Technical field
The present invention relates to a kind of high-performance composite modified asphalt material and preparation method thereof.
Background technology
Along with being widely used of modifying asphalt; Requirement to modifying asphalt is also increasingly high; Be mainly reflected in and require modifying asphalt that package stability, high-temperature behavior, low-temperature performance, ageing resistance, elastic recovery properties are preferably arranged; Hope to reduce the viscosity under the modifying asphalt construction temperature in addition, to improve workability.Some engineering also requires higher softening temperature but can not be too high; Even the softening temperature that has the part engineering to add after wearing out changes this ageing resistance index; Require aging before and after softening temperature change that little (softening temperature after aging changes and stipulates to polymer modified asphalt like Germany; Require to raise≤6 ℃, reduce≤2 ℃).The softening temperature of modified asphalt material is wayward; Softening temperature after aging changes more difficult control, high-temperature behavior, low-temperature performance, the elastic recovery properties that usually occurs modifying asphalt in producing in addition fine but be accompanied by that softening temperature is too high, the moderate but low-temperature performance of package stability difference or softening temperature, phenomenon such as elastic recovery properties is relatively poor or the variation of senile experiment post softening point is bigger.Existing modified asphalt material product satisfies above particular requirement simultaneously than difficulty.
Chinese patent CN1287133A discloses the method that employing styrene-butadiene rubber(SBR) (SBR) and styrene butadiene three block linear copolymers (SBS) prepare composite modified asphalt material; Can improve the bituminous high temperature performance simultaneously; But because it has added the sulfur cross-linking agent in process of production; High temperature performance has also increased the viscosity of modifying asphalt when improving, make its workability variation.Then adopt SBS and polyethylene wax, SBS and Poly Propylene Wax that pitch is carried out modification among CN1952002A and the CN1952007A respectively; The adding of SBS can improve the bituminous high-temperature behavior, and polyethylene wax, Poly Propylene Wax have then increased SBS and bituminous consistency, and reduces by 135 ℃ of viscosity of modifying asphalt; To reduce the difficulty of construction of modifying asphalt; Improve workability, but the affiliation that adds of polyethylene wax, Poly Propylene Wax makes deteriorated low temperature performance, its use receives certain restriction.Then adopt SBR and polyethylene wax, SBR and Poly Propylene Wax that pitch is carried out modification among CN1952010A and the CN1952003A respectively, the adding of SBR can significantly improve the bituminous low-temperature performance, but the effect of improving of high-temperature behavior and elastic recovery properties is not so good as SBS.
Summary of the invention
The objective of the invention is to propose a kind of high-performance composite modified asphalt material, to solve the problems referred to above that exist in the prior art.Composite modified asphalt material provided by the invention has not only improved high temperature performance, workability, elastic recovery properties; And can be through adjustment proportioning control softening point range; Make its softening temperature moderate; Softening temperature after thin film oven aging (TFOT), rotating thin film oven ageing (RTFOT) or 163 ℃ store 48h satisfies and raises≤6 ℃, reduces≤2 ℃ requirement, has improved ageing resistance.
The present invention has a purpose to provide a kind of preparation method of high-performance composite modified asphalt material in addition.
Technical scheme provided by the invention is following:
A kind of composite modified asphalt material is characterized in that: it is made up of 76～90 weight % pitches, 5～15 weight % compatilizers, 2.5～4 weight %SBS, 2～4.5 weight %SBR and 0.5～1.5 weight % polymeric additive.
The high-performance composite modified asphalt material of above-mentioned weight proportion can be through adjustment proportioning control softening point range; Make its softening temperature moderate; Softening temperature after thin film oven aging (TFOT), rotating thin film oven ageing (RTFOT) or 163 ℃ store 48h satisfies and raises≤6 ℃; Reduce≤2 ℃ requirement, improved ageing resistance, and high-temperature behavior, low-temperature performance, elastic recovery properties, excellent storage stability.Simultaneously, the compatilizer that adds in the composite modified asphalt material can improve SBS, SBR and bituminous consistency; The existence of SBS can improve the high-temperature behavior of composite modified asphalt material, and SBR can improve the low-temperature performance of composite modified asphalt material; Polymeric additive can reduce by 135 ℃ of viscosity of modifying asphalt, thereby reduces the difficulty of construction of composite modified asphalt material.The composite modified asphalt material of aforementioned weight proportion both can satisfy the particular requirement of cast asphalt compound construction, also can be applicable to stress absorbing layer, paving steel bridge deck etc.
High-performance composite modified asphalt material of the present invention, its medium pitch are that penetration degree is one or more the mixture in 40～140 the heavy traffic paving asphalt, are preferably one or both the mixture among AH-70, the AH-90.
Said compatilizer can be to extract oil, adjusting oil out, is preferably aromatic hydrocarbons and extracts oil out.
SBS preferred molecular weight described in the present invention is 50,000～100,000 type SBS; It is 100,000～300,000 the Powdered SBR of unvulcanised that SBR described in the present invention is preferably molecular weight.
Polymeric additive described in the present invention be molecular weight 500～15,000 polyethylene wax, molecular weight be 500～15,000 Poly Propylene Wax or molecular weight be 500～15, the mixture of one or more in 000 the straight chain saturated fatty hydrocarbon polymer.The softening temperature of above-mentioned polymeric additive is between 90 ℃～160 ℃.
The performance of compatilizer, SBS, SBR, polymeric additive forms complementation, can in above-mentioned scope, suitably adjust proportioning according to the road surface specific requirement.
High-performance composite modified asphalt material described in the present invention can also comprise other materials that do not influence the high-performance composite modified asphalt material performance of trace.
The preparation method of high-performance composite modified asphalt material of the present invention is following:
Each component is got the raw materials ready by above-mentioned weight part, with 120 ℃～170 ℃ pitches and compatilizer mixing and stirring, adds SBS, SBR and polymeric additive again, is warming up to 170 ℃～200 ℃, stirs 30min～60min; Then through shearing or colloidal mill circular grinding the particle diameter of SBS, SBR and polymeric additive is reached below the 10 μ m, and be dispersed in the pitch, make high-performance composite modified asphalt material at 180 ℃～200 ℃.
Aforementioned shearing is preferably high speed shear, and aforementioned grinding is preferably at a high speed and grinds.
High-performance composite modified asphalt material among the present invention can be through adjustment proportioning control softening point range; Make its softening temperature moderate; Softening temperature after thin film oven aging (TFOT), rotating thin film oven ageing (RTFOT) or 163 ℃ store 48h satisfies and raises≤6 ℃; Reduce≤2 ℃ requirement, improved ageing resistance, simultaneously high-temperature behavior, low-temperature performance, elastic recovery properties, excellent storage stability.The compatilizer that in high-performance composite modified asphalt material, adds can improve SBS, SBR and bituminous consistency; SBS can improve the high-temperature behavior of composite modified asphalt material, and SBR can improve the low-temperature performance of composite modified asphalt material; Polymeric additive can reduce by 135 ℃ of viscosity of modifying asphalt, thereby reduces the difficulty of construction of composite modified asphalt material.The composite modified asphalt material of aforementioned weight proportion both can satisfy the particular requirement of cast asphalt compound construction, also can be applicable to stress absorbing layer, paving steel bridge deck etc.The present invention also provides the preparation method of the simple high-performance composite modified asphalt material of a kind of technology.
Embodiment
Can further understand the present invention through the embodiment of the invention given below; Following examples are merely several specific embodiment of the present invention; But design concept of the present invention is not limited thereto; Allly utilize this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Embodiment 1
The 70# of 760g PetroChina Company Limited. pitch is packed in the small containers, pitch is heated with stirring to 160 ℃, add while stirring after 150g aromatic hydrocarbons extracts oil out and mix; Under whipped state, add the properties-correcting agent of forming by 40g SBS (Korea S LG501), 45g SBR (Shandong Zibo GS-1), 5g polyethylene wax again; Be warming up to 170 ℃ then, remain on 170 ℃ down stir 40min after, be warming up to 180 ℃; Remain under 180 ℃ rotating speed cutting 60min with 6000rpm; The particle diameter of SBS, SBR and polymeric additive is reached below the 10 μ m, and be dispersed in the pitch, make high-performance composite modified asphalt material.
Products obtained therefrom carries out performance index such as penetration degree, ductility, softening temperature, segregation, elastic restoration ratio, Bu Shi rotary viscosity, rotating thin film oven ageing post softening point, penetration degree, ductility, recovery of elasticity, and the result lists in table 1.
Embodiment 2
900g Korea S SK90# pitch is packed in the small containers, pitch is heated with stirring to 170 ℃, add while stirring after 50g aromatic hydrocarbons extracts oil out and mix; Under whipped state, add the properties-correcting agent of forming by 25g SBS (platform moulds 3201), 20g SBR (Shandong Zibo GS-1), 5g polyethylene wax again; Be warming up to 185 ℃ then, remain on 185 ℃ down stir 60min after, be warming up to 190 ℃; Remain under 190 ℃ rotating speed cutting 360min with 5000rpm; The particle diameter of SBS, SBR and polymeric additive is reached below the 10 μ m, and be dispersed in the pitch, make high-performance composite modified asphalt material.
Products obtained therefrom carries out performance index such as softening temperature, penetration degree, ductility, segregation, elastic restoration ratio, Bu Shi rotary viscosity, rotating thin film oven ageing post softening point, penetration degree, ductility, recovery of elasticity, and the result lists in table 1.
Embodiment 3
805g Korea S SK70# pitch is packed in the small containers; Pitch is heated with stirring to 120 ℃, adds while stirring after 120g aromatic hydrocarbons extracts oil out and mix, under whipped state, add the properties-correcting agent of forming by 30g SBS (platform moulds 3201), 30g SBR (Shandong Zibo GS-1), 15g polyethylene wax again; Be warming up to 200 ℃ then; Remain on 200 ℃ down stir 30min after, remaining under 200 ℃ through rotating speed is the colloidal mill circular grinding 2 times of 3000rpm again, and the particle diameter of SBS, SBR and polymeric additive is reached below the 10 μ m; And be dispersed in the pitch, make high-performance composite modified asphalt material.
Products obtained therefrom carries out performance index such as softening temperature, penetration degree, ductility, segregation, elastic restoration ratio, Bu Shi rotary viscosity, rotating thin film oven ageing post softening point, penetration degree, ductility, recovery of elasticity, and the result lists in table 1.
Table 1
Claims (10)
1. composite modified asphalt material, it is characterized in that: it is made up of 76～90 weight % pitches, 5～15 weight % compatilizers, 2.5～4 weight %SBS, 2～4.5 weight %SBR and 0.5～1.5 weight % polymeric additive.
2. according to the composite modified asphalt material described in the claim 1, it is characterized in that: said pitch is that penetration degree is one or more the mixture in 40～140 the heavy traffic paving asphalt.
3. according to the composite modified asphalt material described in the claim 2, it is characterized in that: said pitch is preferably one or both the mixture among AH-70, the AH-90.
4. according to the composite modified asphalt material described in the claim 1, it is characterized in that: said compatilizer is to extract oil, adjusting oil out.
5. according to the composite modified asphalt material described in the claim 4, it is characterized in that: said compatilizer is preferably aromatic hydrocarbons and extracts oil out.
6. according to the composite modified asphalt material described in the claim 1, it is characterized in that: said SBS preferred molecular weight is 50,000～100,000 type SBS; It is 100,000～300,000 the Powdered SBR of unvulcanised that said SBR is preferably molecular weight.
7. according to the composite modified asphalt material described in the claim 1; It is characterized in that: said polymeric additive is that molecular weight is 500～15; 000 polyethylene wax, molecular weight are 500～15; 000 Poly Propylene Wax or molecular weight be 500～15, the mixture of one or more in 000 the straight chain saturated fatty hydrocarbon polymer.
8. according to the composite modified asphalt material described in the claim 7, it is characterized in that: the softening temperature of said polymeric additive is between 90 ℃～160 ℃.
9. the preparation method of a composite modified asphalt material: each component is got the raw materials ready by claim 1,2,3,4,5,6,7 or 8 weight part; With 120 ℃～170 ℃ pitches and compatilizer mixing and stirring; Add SBS, SBR and polymeric additive again; Be warming up to 170 ℃～200 ℃, stir 30min～60min; Then through shearing or colloidal mill circular grinding the particle diameter of SBS, SBR and polymeric additive is reached below the 10 μ m, and be dispersed in the pitch, make composite modified asphalt material at 180 ℃～200 ℃.
10. according to the preparation method of the composite modified asphalt material described in the claim 9, it is characterized in that: the said high speed shear that is cut into, said grinding are to grind at a high speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2008100708467A CN101280115B (en) | 2008-03-28 | 2008-03-28 | High-performance composite modified asphalt material and preparation thereof |
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| CN2008100708467A CN101280115B (en) | 2008-03-28 | 2008-03-28 | High-performance composite modified asphalt material and preparation thereof |
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| CN101280115A CN101280115A (en) | 2008-10-08 |
| CN101280115B true CN101280115B (en) | 2012-04-11 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101667430B1 (en) * | 2010-12-27 | 2016-10-18 | 에스케이이노베이션 주식회사 | Composition for Warm-Mix Asphalt Pavements |
| CA3027371A1 (en) * | 2016-06-14 | 2017-12-21 | Heritage Research Group | Binder composition for improved tack coat and stress absorbing membrane interlayer application for road construction |
| CN107245246A (en) * | 2017-05-14 | 2017-10-13 | 中铁二院工程集团有限责任公司 | A kind of modified pitch for improving high-speed railway tunneling boring bituminous concrete reinforcing surface layer of subgrade bed cryogenic property and preparation method thereof |
| CN108165036A (en) * | 2018-01-16 | 2018-06-15 | 苏州拓博琳新材料科技有限公司 | A kind of modified asphalt composite of low temperature performance excellent and preparation method thereof |
| CN109385106A (en) * | 2018-09-30 | 2019-02-26 | 广东粤运佳富实业有限公司 | Low viscous high performance modified bitumen of one kind and preparation method thereof |
| CN114958021B (en) * | 2022-07-28 | 2022-11-08 | 河北昊泽化工有限公司 | High-conversion-rate styrene-butadiene latex emulsified asphalt material |
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Application publication date: 20081008 Assignee: Xiamen Ward highway asphalt Technology Co., Ltd. Assignor: Xiamen Huate Group Co., Ltd. Contract record no.: 2015350000042 Denomination of invention: High-performance composite modified asphalt material and preparation thereof Granted publication date: 20120411 License type: Exclusive License Record date: 20150528 |
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Assignee: Xiamen Ward highway asphalt Technology Co., Ltd. Assignor: Xiamen Huate Group Co., Ltd. Contract record no.: 2015350000042 Date of cancellation: 20161209 |
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Effective date of registration: 20161230 Address after: Xiang Yue Road 361101 Xiamen city in Fujian province Xiangan District Ma Zhen 4 No. 11 Patentee after: Xiamen Ward highway asphalt Technology Co., Ltd. Address before: Everbright Bank building, No. 81 Hubin South Road, Xiamen city Fujian province 361000 21 floor Patentee before: Xiamen Huate Group Co., Ltd. |