CN101544836A - Composite modified asphalt - Google Patents
Composite modified asphalt Download PDFInfo
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- CN101544836A CN101544836A CN200910022303A CN200910022303A CN101544836A CN 101544836 A CN101544836 A CN 101544836A CN 200910022303 A CN200910022303 A CN 200910022303A CN 200910022303 A CN200910022303 A CN 200910022303A CN 101544836 A CN101544836 A CN 101544836A
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Abstract
The invention discloses high-performance composite modified asphalt, comprising 72-93.7 percent of petroleum asphalt, 6-15 percent of polymer containing unsaturated double bond, 0.2-5 percent of dispersing agent and 0.1-8 percent of latent solvent. The polymer containing unsaturated double bond is firstly added, then the dispersing agent is added, and at last the latent solvent is added. The invention has excellent integrated property of high temperature and low temperature, viscidity toughness, elastic restitution and heat storage stabilizing performace. The material has stable performance and favorable integrated property of high temperature and low temperature and elastic restitution, and all indexes are superior to that of common modified asphalt. The invention is suitable for asphalt resurfacing structure on old cement concrete roads, asphalt paving on semirigid bases or poor concrete bases of new-built roads and pavement in high-degree roads, bridges, and the like.
Description
Technical field
The present invention relates to a kind of bituminous material, particularly a kind of composite modified asphalt.
Background technology
When the bituminous pavement high-temperature stability is not enough, be prone to as diseases such as passing, rut, bellding; Traffic channelling makes the road surface be subjected to rolling repeatedly and fatigure failure occurs; Cold cracking also is the problem that road circle generally is concerned about.In order to improve the over-all properties of bituminous pavement, pitch is carried out modification be of long duration, the mode of outer dopings such as general main employing superpolymer, tensio-active agent, antiaging agent improves performances such as bituminous high-temperature stability, low-temperature cracking-resistance, storage stability.And single properties-correcting agent can't satisfy heightening of above-mentioned over-all properties, therefore adopts the composite modified fashion trend that becomes.
The performance of composite modified asphalt is relevant with its modification complete processing to a great extent, even properties-correcting agent is same admixture ratio, the interpolation order is different, and modification is the result also make a world of difference, and suitable change interpolation order can access better result.
By the pitch of patent CN1053438 modification, though softening temperature is higher, 5 ℃ of ductilities are less, do not reach under the low temperature to alleviate the purpose that the road surface load stress is concentrated.
By the pitch of patent CN01135212.4 modification, though low-temperature ductility has greatly improved, softening temperature is lower, high-temperature behavior deviation, non-deformability deficiency.
By the pitch of patent CN00119617.0 modification, softening temperature surpasses 80 ℃, and 5 ℃ of ductilities all below 35cm, can not reach the equilibrium of high temperature performance.
In order to solve the deficiency of above-mentioned modifying asphalt, it is composite modified that the present invention adopts multiple properties-correcting agent that pitch is carried out, to reach performances such as improving high temperature, low temperature, sticking toughness, recovery of elasticity simultaneously.
Summary of the invention
Characteristics such as the purpose of this invention is to provide a kind of high-performance composite modified asphalt, this pitch has good high-low temperature resistant over-all properties, and sticking toughness, elastic recovery properties and hot memory property are stable.
Technical scheme of the present invention is achieved in that
Material component of the present invention consists of by mass percentage: petroleum pitch 72%～93.7%, contain the polymkeric substance 6%～15% of unsaturated double-bond, diffusant 0.2%～5%, solubility promoter 0.1%～8%.
For containing the polymkeric substance of unsaturated double-bond, diffusant is solubility promoter at last in proper order in the interpolation of each material component.
Described petroleum asphalt penetration is 70～200dmm.
The polymkeric substance that contains unsaturated double-bond is to be the vinyl-vinyl acetate copolymer (EVA) and the styrene-butadiene-styrene (SBS) of 1:1～3 by mass ratio, or mass ratio is 1:1～2 styrene-butadiene-styrenes (SBS) and styrene butadiene rubbers (SBR).
Diffusant is a kind of in sulfide or the vulcanization accelerator.
Solubility promoter is selected from a kind of in furfural extract oil, aromatic oil or the rubber filling oil.
The preparation of high-performance composite modified asphalt is that asphalt stock is heated to 150 ℃～180 ℃, adds predetermined 6%～15% the polymkeric substance that contains unsaturated double-bond, at 6000～10000r/min rotating speed down cut, makes its abundant swelling with shears.Properties-correcting agent is tapered under shearing action, when extremely being dispersed in the asphalt stock with micron particles, adds 0.2%～5% diffusant, shears 10～30min, continues to be trimmed to be uniformly dispersed.Add 0.1%～8% solubility promoter at last, shear 5～10min, whole shear history is 45～70min.In the indoor sample making course, after stopping to shear, need vacuumize 30min to eliminate a large amount of bubbles that high speed shear is brought into, last moulding test.
Adopt material of the present invention, its storage stability is good.In 163 ℃ the isolation test, 48h softening temperature difference is 1.0～1.7 ℃.Wore out 60 hours in 140 ℃ baking oven, each performance index does not change substantially.Significantly improve high temperature performance.Softening temperature can reach more than 80 ℃, and 5 ℃ of ductilities can reach 50～80cm.Significantly improve adhesive property with sub-surface or surface layer.Sticking toughness 20～35N.m, toughness 15～27N.m.
Description of drawings
Fig. 1 is the sticking toughness test of composite modified asphalt figure as a result.
Below in conjunction with accompanying drawing content of the present invention is described in further detail.
Embodiment
Specific embodiments of the invention are as follows, and wherein per-cent is by mass ratio.
90# petroleum pitch with 85%, 5% styrene-butadiene-styrene, 5% styrene butadiene rubbers, 1% vulcanization accelerator, 4% aromatic oil are got ready in proportion.
At first petroleum pitch is heated to 170 ℃, the limit sheared edge slowly adds styrene-butadiene-styrene when shearing evenly no particle, add styrene butadiene rubbers and continue to be trimmed to micron particles, after the adding vulcanization accelerator is sheared 20min, add aromatic oil and shear 10min.Vacuumize the 30min aftershaping after stopping to shear and test each desired value.
Specific embodiment 2:
110# petroleum pitch with 84%, 7% styrene-butadiene-styrene, 2.5% vinyl-vinyl acetate copolymer, 1.5% sulfide, 5% furfural extract oil are got ready in proportion.
At first petroleum pitch is heated to 170 ℃, the limit sheared edge slowly adds styrene-butadiene-styrene when shearing evenly no particle, add vinyl-vinyl acetate copolymer and continue to be trimmed to micron particles, after adding sulfide is sheared 15min, add furfural extract oil and shear 10min.Vacuumize the 30min aftershaping after stopping to shear and test each desired value.
Specific embodiment 3:
130# petroleum pitch with 81%, 8% styrene-butadiene-styrene, 3% vinyl-vinyl acetate copolymer, 2% sulfide, 6% rubber filling oil are got ready in proportion.
At first petroleum pitch is heated to 170 ℃, the limit sheared edge slowly adds styrene-butadiene-styrene when shearing evenly no particle, add vinyl-vinyl acetate copolymer and continue to be trimmed to micron particles, after adding sulfide is sheared 20min, add rubber filling oil and shear 15min.Vacuumize the 30min aftershaping after stopping to shear and test each desired value.
Specific embodiment 4:
70# petroleum pitch with 87%, 4% styrene-butadiene-styrene, 4% styrene butadiene rubbers, 1% sulfide, 4% rubber filling oil are got ready in proportion.
At first petroleum pitch is heated to 170 ℃, the limit sheared edge slowly adds styrene-butadiene-styrene when shearing evenly no particle, add styrene butadiene rubbers and continue to be trimmed to micron particles, after adding sulfide is sheared 15min, add rubber filling oil and shear 10min.Vacuumize the 30min aftershaping after stopping to shear and test each desired value.
Specific embodiment 5:
150# petroleum pitch with 80%, 6% styrene-butadiene-styrene, 7% styrene butadiene rubbers, 1.5% vulcanization accelerator, 5.5% furfural extract oil are got ready in proportion.
At first petroleum pitch is heated to 160 ℃, the limit sheared edge slowly adds styrene-butadiene-styrene when shearing evenly no particle, add styrene butadiene rubbers and continue to be trimmed to micron particles, after the adding vulcanization accelerator is sheared 20min, add furfural extract oil and shear 10min.Vacuumize the 30min aftershaping after stopping to shear and test each desired value.
The various The performance test results of composite modified asphalt of the present invention are shown in table 1, table 2.Sticking toughness result as shown in Figure 1.
Table 1 composite modified asphalt performance test result
Table 2 composite modified asphalt storage stability test-results
From table 1, table 2 as can be seen, in the pitch that modification is carried out in ratio provided by the invention and interpolation in proper order, softening temperature is higher, and low-temperature ductility is also bigger, elastic recovery properties with aging after performance all good.And in 140 ℃ baking oven, wore out 60 hours, each performance index does not change substantially, illustrates that its storage stability is better.Its sticking toughness can reach 31.6N.m, and toughness reaches 23.4N.m.General modifying asphalt is difficult to reach simultaneously above-mentioned target.Sticking toughness test result as shown in Figure 1.
Claims (6)
1, a kind of composite modified asphalt, its material component consists of by mass percentage: petroleum pitch 72%～93.7%, contain the polymkeric substance 6%～15% of unsaturated double-bond, diffusant 0.2%～5%, solubility promoter 0.1%～8%.
2, composite modified asphalt according to claim 1 is characterized in that, for containing the polymkeric substance of unsaturated double-bond, diffusant is solubility promoter at last in proper order in the interpolation of each material component.
3, composite modified asphalt according to claim 1 is characterized in that, described petroleum asphalt penetration is 70～200dmm.
4, composite modified asphalt according to claim 1, it is characterized in that, the polymkeric substance that contains unsaturated double-bond is to be the vinyl-vinyl acetate copolymer (EVA) and the styrene-butadiene-styrene (SBS) of 1:1～3 by mass ratio, or mass ratio is 1:1～2 styrene-butadiene-styrenes (SBS) and styrene butadiene rubbers (SBR).
5, composite modified asphalt according to claim 1 is characterized in that, diffusant is a kind of in sulfide or the vulcanization accelerator.
6, composite modified asphalt according to claim 1 is characterized in that, solubility promoter is selected from a kind of in furfural extract oil, aromatic oil or the rubber filling oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910022303A CN101544836A (en) | 2009-04-30 | 2009-04-30 | Composite modified asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910022303A CN101544836A (en) | 2009-04-30 | 2009-04-30 | Composite modified asphalt |
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| Publication Number | Publication Date |
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| CN101544836A true CN101544836A (en) | 2009-09-30 |
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| CN200910022303A Pending CN101544836A (en) | 2009-04-30 | 2009-04-30 | Composite modified asphalt |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040846B (en) * | 2009-10-16 | 2012-09-12 | 中国石油化工股份有限公司 | Oil-resistant asphalt pavement material and preparation method thereof |
| CN102993755A (en) * | 2011-09-14 | 2013-03-27 | 路翔股份有限公司 | Modified asphalt, its preparation method, and asphalt concrete |
| CN103059593A (en) * | 2013-01-29 | 2013-04-24 | 长安大学 | Diatomite compound SBS (Styrene Butadiene Styrene) modified asphalt and preparation method thereof |
| CN103319906A (en) * | 2013-06-26 | 2013-09-25 | 北京同华道路养护有限责任公司 | Asphalt for ultrathin surface wearing layer and mixture and application thereof |
| CN104059369A (en) * | 2014-07-01 | 2014-09-24 | 无锡市鑫路道路材料有限公司 | Composite polymer modified asphalt and preparing method of composite polymer modified asphalt |
| CN104212188A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Pouring type mixture asphalt material and preparation method thereof |
-
2009
- 2009-04-30 CN CN200910022303A patent/CN101544836A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040846B (en) * | 2009-10-16 | 2012-09-12 | 中国石油化工股份有限公司 | Oil-resistant asphalt pavement material and preparation method thereof |
| CN102993755A (en) * | 2011-09-14 | 2013-03-27 | 路翔股份有限公司 | Modified asphalt, its preparation method, and asphalt concrete |
| CN102993755B (en) * | 2011-09-14 | 2015-08-26 | 广州路翔交通材料有限公司 | The preparation method of modifying asphalt, this modifying asphalt and bituminous concrete |
| CN103059593A (en) * | 2013-01-29 | 2013-04-24 | 长安大学 | Diatomite compound SBS (Styrene Butadiene Styrene) modified asphalt and preparation method thereof |
| CN104212188A (en) * | 2013-06-05 | 2014-12-17 | 中国石油天然气股份有限公司 | Pouring type mixture asphalt material and preparation method thereof |
| CN103319906A (en) * | 2013-06-26 | 2013-09-25 | 北京同华道路养护有限责任公司 | Asphalt for ultrathin surface wearing layer and mixture and application thereof |
| CN104059369A (en) * | 2014-07-01 | 2014-09-24 | 无锡市鑫路道路材料有限公司 | Composite polymer modified asphalt and preparing method of composite polymer modified asphalt |
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Open date: 20090930 |