CN1365986A - Process for improving compatible stability between SBS and asphalt - Google Patents
Process for improving compatible stability between SBS and asphalt Download PDFInfo
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- CN1365986A CN1365986A CN 01106853 CN01106853A CN1365986A CN 1365986 A CN1365986 A CN 1365986A CN 01106853 CN01106853 CN 01106853 CN 01106853 A CN01106853 A CN 01106853A CN 1365986 A CN1365986 A CN 1365986A
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- sbs
- grafting
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- pitch
- asphalt
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- Working-Up Tar And Pitch (AREA)
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Abstract
A process for improving the compatible stability between SBS and asphalt features that the dual-bond acid anhydride compound is used to chemical graft to SBS for generating polar groups, and the said polar groups and the polar groups in asphalt constitute a net-shaped structure by physical adsorption or chemical co-valency. Its advantages are high effect and low cost.
Description
The present invention relates to the method for a kind of SBS of raising and pitch compatible stability, the method that particularly a kind of chemical graft SBS uses in modifying asphalt.
The method of modifying asphalt has following several at present: 1) adopt solvent method that SBS is dissolved in the organic solvent, again with pitch blend in solvent, by heating solvent extraction, obtain modifying asphalt then.This method is owing to be that blend reaches the nano level blending and modifying in solvent, and effect is best, but the tooling cost height is inflammable and explosive, the technology controlling and process complexity; 2) adopt high-shear colloid mill, utilize the shearing of colloidal mill to reach the blend purpose in molten state SBS and pitch, but its relative separation value of modifying asphalt that this method is produced is difficult to be less than 2.5 ℃ index, and the need specific equipment, the production cost height, energy consumption is big.
CN1066664A introduces filling SBS such as adopting residual oil, machine oil and reaches meltable in the bituminous purpose to reduce the SBS softening temperature, but fails fundamentally to solve SBS and pitch stability problem.Beijing Shi Keyuan reaches the compatible stable purpose of SBS and pitch by add compatible stablizer in SBS modifying asphalt process, but can not make the easy and pitch blend of SBS.The Wen Guian of macromolecular material institute of Shanghai Communications University etc. use dynamic vulcanization method in asphalt modification research, made the SBS/ bitumen blend of good mechanical performance, high temperature storage stable, but still unresolved SBS is refractory to the bituminous problem.
The purpose of this invention is to provide a kind of modified SBS, make the SBS of modification meltable, make simultaneously SBS and pitch have part to adsorb by force or crosslinked again, thereby reach SBS and bitumen compatibility is good, be easy to blend and the good dual purpose of high temperature storage in pitch.
The present invention is achieved in that
At first SBS being carried out graft modification, is benchmark for 100 parts with the parts by weight of SBS, and the grafting proportioning is as follows:
SBS 100
Grafting agent 5～15
Initiator 0.1～1.5
Wherein grafting agent is the mixture of a kind of or both arbitrary proportions in MALEIC ANHYDRIDE, the dodecenylsuccinic acid acid anhydride; Initiator is benzoyl peroxide or Diisopropyl azodicarboxylate.
With above-mentioned material blend, enter twin screw extruder, carrying out grafting under 100～190 ℃, to obtain percentage of grafting be 5%～10% grafting SBS.Carry out pelletizing again.
Under 150 ℃～190 ℃ temperature, carry out blending and modifying with the SBS after the graft modification then with pitch.
The present invention has following positively effect:
1. with the SBS modifying asphalt after the graft modification, because of on SBS, forming the segment polarity group, polar group in these polar groups and the pitch or physical adsorption or chemical covalency form reticulated structure, reached the compatible stable effect of SBS and pitch, 5 ℃ of ductilities that make the modifying asphalt that obtains are more than 40cm, and softening temperature relative separation value is less than 2.5 ℃.The test ductility is pressed To605 bitumen ductility test method and is carried out; Test softening temperature, separation value are pressed the experiment of To660-98 segregation and are carried out.
2. SBS after the graft modification and pitch can carry out quick blend, and high-temperature storage stability is good.For example the SBS after common SBS, the graft modification is dropped into respectively in 180 ℃ the fused Ke Shi 70# pitch and stirs 15min, 20min, 30min, 40min, modifying asphalt.Test 5 ℃ of ductilities, softening temperature, the relative separation value of modifying asphalt respectively, the result is as follows.
SBS15min softening temperature after the common SBS graft modification, ℃ 75 79
5 ℃ of ductilities, cm 10 30
Relative separation value＞30 ℃ 6 ℃ of 20min softening temperatures, ℃ 83 85
5 ℃ of ductilities, cm 18.7 43.2
Relative separation value＞30 ℃ 2.4 ℃ of 25min softening temperatures, ℃ 84 85
5 ℃ of ductilities, cm 26.2 43.7
17 ℃ of 6 ℃ of 30min softening temperatures of relative separation value, ℃ 85 85
5 ℃ of ductilities, cm 30.4 44.0
15 ℃ of 2.3 ℃ of 40min softening temperatures of relative separation value, ℃ 85 85
5 ℃ of ductilities, cm 42.3 44.1
15 ℃ 2.2 ℃ of relative separation values
Embodiment is as follows:
Embodiment 1
Press: 100 parts of SBS (star-like)
10 parts of MALEIC ANHYDRIDE
The proportioning that benzoyl peroxide is 0.2 part is carried out blend earlier and is entered twin screw extruder then, and grafting under 100 ℃～190 ℃ temperature obtains the modified SBS of φ 3mm * 1mm thin slice through pelletizing.
Again respectively with common SBS and modified SBS in stirring 20min in 180 ℃ of following fused Ke Shi 70# pitches of ratio input of 5%, modifying asphalt, two kinds of results are compared:
Common SBS (star-like) modified SBS (star-like)
Softening temperature, ℃ 84 86
5 ℃ of ductilities, cm 21 46.7
Relative separation value＞30 ℃ 2.5 ℃
Embodiment 2
Press: 100 parts of SBS (star-like)
5 parts of dodecenylsuccinic acid acid anhydrides
The proportioning that benzoyl peroxide is 0.2 part is carried out blend earlier and is entered twin screw extruder then, and grafting under 100 ℃～190 ℃ temperature obtains the modified SBS of φ 3mm * 1mm thin slice through pelletizing.
Again respectively with common SBS and modified SBS in stirring 20min in 180 ℃ of following fused Ke Shi 70# pitches of ratio input of 5%, modifying asphalt, two kinds of results are compared:
Common SBS (star-like) modified SBS (star-like)
Softening temperature, ℃ 84 87
5 ℃ of ductilities, cm 25 44.3
Relative separation value＞30 ℃ 2.4 ℃
Embodiment 3
Press: 100 parts of SBS (star-like)
13 parts of MALEIC ANHYDRIDE
The proportioning that benzoyl peroxide is 0.25 part is carried out blend earlier and is entered twin screw extruder then, and grafting under 100 ℃～190 ℃ temperature obtains the modified SBS of φ 3mm * 1mm thin slice through pelletizing.
Again respectively with common SBS and modified SBS in stirring 20min in 180 ℃ of following fused Ke Shi 70# pitches of ratio input of 5%, modifying asphalt, two kinds of results are compared:
Common SBS (star-like) modified SBS (star-like)
Softening temperature, ℃ 84 86
5 ℃ of ductilities, cm 21 46.7
Relative separation value＞30 ℃ 2.5 ℃
Embodiment 4
Press: 100 parts of SBS (star-like)
4 parts of dodecenylsuccinic acid acid anhydrides
9 parts of MALEIC ANHYDRIDE
The proportioning that benzoyl peroxide is 0.9 part is carried out blend earlier and is entered twin screw extruder then, and grafting under 100 ℃～190 ℃ temperature obtains the modified SBS of φ 3mm * 1mm thin slice through pelletizing.
Again respectively with common SBS and modified SBS in stirring 20min in 180 ℃ of following fused Ke Shi 70# pitches of ratio input of 5%, modifying asphalt, two kinds of results are compared:
Common SBS (star-like) modified SBS (star-like)
Softening temperature, ℃ 84 87
5 ℃ of ductilities, cm 25 45.4
Relative separation value＞30 ℃ 2.4 ℃
Embodiment 5
Press: 100 parts of SBS (line style)
3 parts of dodecenylsuccinic acid acid anhydrides
12 parts of MALEIC ANHYDRIDE
The proportioning that benzoyl peroxide is 1.0 parts is carried out blend earlier and is entered twin screw extruder then, and grafting under 100 ℃～190 ℃ temperature obtains the modified SBS of φ 3mm * 1mm thin slice through pelletizing.
Again respectively with common SBS and modified SBS in stirring 20min in 180 ℃ of following fused Ke Shi 70# pitches of ratio input of 10%, modifying asphalt, two kinds of results are compared:
Common SBS (line style) modified SBS (line style)
Softening temperature, ℃ 84 87
5 ℃ of ductilities, cm 26 46.0
Relative separation value＞30 ℃ 2.4 ℃
Claims (1)
1. a method that improves SBS and pitch compatible stability is characterized in that: at first SBS is carried out
Graft modification is a benchmark for 100 parts with the parts by weight of SBS, and the grafting proportioning is as follows:
SBS 100
Grafting agent 5～15
Initiator 0.1～1.5
Wherein grafting agent is the mixture of a kind of or both arbitrary proportions in MALEIC ANHYDRIDE, the dodecenylsuccinic acid acid anhydride; Initiator is benzoyl peroxide or Diisopropyl azodicarboxylate.
With above-mentioned material blend, enter twin screw extruder, carrying out grafting under 100～190 ℃, to obtain percentage of grafting be 5%～10% grafting SBS.Carry out pelletizing again.
Under 150 ℃～190 ℃ temperature, carry out blending and modifying with the SBS after the graft modification then with pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01106853 CN1365986A (en) | 2001-01-19 | 2001-01-19 | Process for improving compatible stability between SBS and asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01106853 CN1365986A (en) | 2001-01-19 | 2001-01-19 | Process for improving compatible stability between SBS and asphalt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1365986A true CN1365986A (en) | 2002-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01106853 Pending CN1365986A (en) | 2001-01-19 | 2001-01-19 | Process for improving compatible stability between SBS and asphalt |
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| CN (1) | CN1365986A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831190A (en) * | 2010-05-20 | 2010-09-15 | 李滢 | High-viscosity asphalt modifier soluble in asphalt and production method thereof |
| CN101967653A (en) * | 2010-11-08 | 2011-02-09 | 福建师范大学 | Alloying metal net-two pole film composite electrode |
| CN102964850A (en) * | 2012-08-28 | 2013-03-13 | 天津法莫西医药科技有限公司 | Epoxidized SBS modified asphalt and its production process |
| CN104910637A (en) * | 2015-06-10 | 2015-09-16 | 四川蜀羊防水材料有限公司 | SBS/PE (styrene-butadiene-styrene/polyethylene) modified asphalt material |
| CN106432637A (en) * | 2016-06-24 | 2017-02-22 | 涂淑光 | Direct Vat Set reactive asphalt tackifier and preparation method thereof |
| CN106554470A (en) * | 2015-09-30 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of method for preparing the SBS latex for modified emulsifying asphalt or modified pitch |
| CN107722648A (en) * | 2016-08-12 | 2018-02-23 | 交通运输部公路科学研究所 | A kind of high-viscosity high-elasticity modified pitch and its preparation and application |
-
2001
- 2001-01-19 CN CN 01106853 patent/CN1365986A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831190A (en) * | 2010-05-20 | 2010-09-15 | 李滢 | High-viscosity asphalt modifier soluble in asphalt and production method thereof |
| CN101831190B (en) * | 2010-05-20 | 2011-11-02 | 李滢 | High-viscosity asphalt modifier soluble in asphalt and production method thereof |
| CN101967653A (en) * | 2010-11-08 | 2011-02-09 | 福建师范大学 | Alloying metal net-two pole film composite electrode |
| CN102964850A (en) * | 2012-08-28 | 2013-03-13 | 天津法莫西医药科技有限公司 | Epoxidized SBS modified asphalt and its production process |
| CN104910637A (en) * | 2015-06-10 | 2015-09-16 | 四川蜀羊防水材料有限公司 | SBS/PE (styrene-butadiene-styrene/polyethylene) modified asphalt material |
| CN106554470A (en) * | 2015-09-30 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of method for preparing the SBS latex for modified emulsifying asphalt or modified pitch |
| CN106554470B (en) * | 2015-09-30 | 2018-12-25 | 中国石油化工股份有限公司 | A method of preparing the Aggregate SBS latex for modified emulsifying asphalt or modified pitch |
| CN106432637A (en) * | 2016-06-24 | 2017-02-22 | 涂淑光 | Direct Vat Set reactive asphalt tackifier and preparation method thereof |
| CN107722648A (en) * | 2016-08-12 | 2018-02-23 | 交通运输部公路科学研究所 | A kind of high-viscosity high-elasticity modified pitch and its preparation and application |
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Owner name: BALING PETROCHEMICAL CO., LTD., SINOPEC Free format text: FORMER OWNER: YUEYANG PETROCHEMICAL PLANT, BALING PETROCHEMICAL CORP. Effective date: 20030109 |
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Effective date of registration: 20030109 Address after: 414014 Hunan Province, Yueyang city Yunxi District of Baling Petrochemical Limited liability company technology development department Applicant after: Baling Petrochemical Co., Ltd., SINOPEC Address before: 414014 Yunxi District, Hunan, Yueyang Applicant before: Yueyang Chemical General Plant, Baling Petrochemical |
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