CN1990567A - High dispersibility high viscosity modified asphalt - Google Patents
High dispersibility high viscosity modified asphalt Download PDFInfo
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- CN1990567A CN1990567A CN 200510112059 CN200510112059A CN1990567A CN 1990567 A CN1990567 A CN 1990567A CN 200510112059 CN200510112059 CN 200510112059 CN 200510112059 A CN200510112059 A CN 200510112059A CN 1990567 A CN1990567 A CN 1990567A
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- modified asphalt
- viscosity modified
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- asphalt
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Abstract
The invention relates to a high-dispersity high-viscosity modified asphalt which comprises the following constituents (by weight ratio): asphalt 100, styrene-isoprene-styrene segmented copolymer 3-12 having an average molecular weight of 30-300 thousand, petroleum resin 5-30 with a softening point of 70-150 deg C, polypropene wax 1-4 having an average molecular weight of 500-15000 and a softening point of 90-160 deg, sulfur 0.05-1. According to the invention, high viscosity, good dispersity and stability can be achieved, the PG classification can reach 82-28. The obtained high-performance modified asphalt can be used for both the general water seeping pavements, and specific sites such as bridge pavement and stress absorption layer.
Description
Technical field
The present invention relates to a kind of high viscosity modified asphalt for water seeping pavement.
Background technology
Asphaltum with high viscosity is meant the pitch of 60 ℃ of viscosity greater than 20Pa.s, is suitable for spreading out and putting on of traffic road surface and drainage pavement.Asphaltum with high viscosity mainly makes by add polymer modification in petroleum pitch at present.Add polymkeric substance petroleum pitch is carried out modification, can obviously improve bituminous high and low temperature performance, the anti-rut of high temperature, the low temperature cracking resistance ability of bituminous pavement is provided.But,, make the polymer modified asphalt difficulties in dispersion owing to have differences such as molecular weight, viscosity between polymkeric substance and the pitch; Simultaneously, because most polymers and pitch can be compatible fully, and exist density difference, at high temperature storage stability is bad to cause the modifying asphalt system, and layering easily influences asphalt quality and normal construction.
For solving the problem of asphaltum with high viscosity difficulties in dispersion, Chinese patent cn1089349c has reported and has adopted elder generation with polymkeric substance and pitch and other Synergist S-421 95 blend, is prepared into easily dispersive masterbatch in pitch, this masterbatch is dispersed in the pitch preparation modifying asphalt again.
Be to solve the high temperature storing stabilization problem of modifying asphalt, United States Patent (USP) us3,634,293 when having proposed use polymer modified asphalt, adding superoxide, the method for linking agents such as sulphur; International monopoly wo45,488 have proposed SB two blocks and SBS triblock copolymer and usefulness are added the method for a spot of linking agent; Chinese patent cn1386790A discloses by earlier with polymkeric substance and the carbon black blend method of modifying asphalt again.
But all good water seeping pavement of dispersed and stability yet there are no report with modifying asphalt.
Summary of the invention
The purpose of this invention is to provide a kind of new high-viscosity modified asphalt, this pitch not only disperses easily, and also has high temperature storing stabilization preferably.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of high dispersibility high viscosity modified asphalt, it contains following component: pitch 100, styrene isoprene styrene block copolymer (SIS) (SIS) 3～12, petroleum resin 5～30, Poly Propylene Wax 1～4, sulphur 0.05～1 (more than be parts by weight).
Described styrene isoprene styrene block copolymer (SIS) (SIS) molecular weight is better 3～300,000 o'clock effects, and the preferable scope of its content is 5～10 parts, most preferably is 6～9 parts.
The preferred weight fraction of described petroleum resin is 10～20.
The molecular-weight average of described Poly Propylene Wax is 500～15000, and softening temperature is 90～160 ℃.
Described sulphur content is 0.1～0.5 weight part preferably, and most preferred scope is 0.12～0.2 weight part.
The preparation method of easy dispersive high viscosity modified asphalt for water seeping pavement of the present invention is: earlier pitch is heated to flowable state, add styrene isoprene styrene block copolymer (SIS), petroleum resin and Poly Propylene Wax then successively, the powerful stirring adds SULPHUR POWDER continuation stirring again and gets final product.
Beneficial effect of the present invention: the present invention mixes styrene isoprene styrene block copolymer (SIS), petroleum resin and Poly Propylene Wax in pitch, not only viscosity is very high, and it is dispersed and stability is also fine, the PG classification reaches 82-28, belong to high performance modifying asphalt, can be used for general water seeping pavement, also can be used for special occasions such as deck paving and stress absorbing layer.
Embodiment
Get penetration degree and be 100 kilograms of 300 basic asphalts, be heated to 180 ℃, (molecular-weight average is 5000 to add 8 kilograms of styrene isoprene styrene block copolymer (SIS) (SIS) (molecular-weight average is 160,000), 12 kilograms of petroleum resin and Poly Propylene Wax successively, softening temperature is 130 ℃) 1 kilogram, the employing machine,massing stirred 6 hours with 200 rev/mins stirring velocity, added 0.18 kilogram of SULPHUR POWDER, continued to stir 1 hour, prepare modifying asphalt, the results are shown in Table one.
Table one
| The index of modifying asphalt | |
| 25 ℃ of penetration degrees, dmm | 70 |
| 5 ℃ of ductilities, 5cm/min (cm) | 26 |
| Softening temperature T R&B(℃) | 90 |
| 135 ℃ of kinematic viscosity (Pa.s) | 2.8 |
| 25 ℃ of recovery of elasticity (%) | 94 |
| Ductility is 5 ℃ behind the RTFOT, 5cm/min (cm) | 16 |
| 60 ℃ of viscosity (10000Pa.s) | 4.5 |
| The PG classification | 82-28 |
As can be seen from the table, prepare high performance modifying asphalt, 60 degree viscosity are greater than 20,000 Pa.s, and the PG classification reaches 82～28, and high performance modifying asphalt can be used for OGFC, also can be used for special occasions such as deck paving, stress absorbing layer in addition.
Claims (6)
1, a kind of high dispersibility high viscosity modified asphalt, the weight fraction of its each component is as follows: styrene isoprene styrene block copolymer (SIS) 3～12 between 3～300,000 of pitch 100, molecular weight, petroleum resin 5～30, the molecular-weight average that softening temperature is 70～150 ℃ are 500～15000, and softening temperature is 90～160 ℃ Poly Propylene Wax 1～4, a sulphur 0.05～1.
2, high dispersibility high viscosity modified asphalt as claimed in claim 1 is characterized in that: the weight fraction of styrene isoprene styrene block copolymer (SIS) is 5～10.
3, high dispersibility high viscosity modified asphalt as claimed in claim 2 is characterized in that: the weight fraction of styrene isoprene styrene block copolymer (SIS) is 6～9.
4, high dispersibility high viscosity modified asphalt as claimed in claim 1 is characterized in that: the weight fraction of petroleum resin is 10～20.
5, high dispersibility high viscosity modified asphalt as claimed in claim 1 is characterized in that: the weight fraction of sulphur is 0.1～0.5.
6, high dispersibility high viscosity modified asphalt as claimed in claim 5 is characterized in that: the weight fraction of sulphur is 0.12～0.2 weight part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510112059 CN1990567A (en) | 2005-12-27 | 2005-12-27 | High dispersibility high viscosity modified asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510112059 CN1990567A (en) | 2005-12-27 | 2005-12-27 | High dispersibility high viscosity modified asphalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1990567A true CN1990567A (en) | 2007-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510112059 Pending CN1990567A (en) | 2005-12-27 | 2005-12-27 | High dispersibility high viscosity modified asphalt |
Country Status (1)
| Country | Link |
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| CN (1) | CN1990567A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108948632A (en) * | 2018-06-12 | 2018-12-07 | 佛山萃智新材料科技有限公司 | A kind of high dispersibility high viscosity modified asphalt |
-
2005
- 2005-12-27 CN CN 200510112059 patent/CN1990567A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108948632A (en) * | 2018-06-12 | 2018-12-07 | 佛山萃智新材料科技有限公司 | A kind of high dispersibility high viscosity modified asphalt |
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