CN105237780A - Preparation method of SBS latex - Google Patents
Preparation method of SBS latex Download PDFInfo
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- CN105237780A CN105237780A CN201510669820.4A CN201510669820A CN105237780A CN 105237780 A CN105237780 A CN 105237780A CN 201510669820 A CN201510669820 A CN 201510669820A CN 105237780 A CN105237780 A CN 105237780A
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Abstract
Belonging to the field of high polymer materials, the invention discloses a preparation method of SBS latex. The method includes the steps of: 1) mixing 10-60 parts of water with 1-8 parts of a nonionic emulsifier evenly, and performing heating to 40-70DEG C; 2) adding 100-200 parts of hydrogenated SBS semi-finished product before being subjected to elutriation coagulation in several times, and adopting shearing and stirring to disperse the SBS semi-finished product, the water and the nonionic emulsifier evenly; and 3) removing the solvent brought by the SBS semi-finished product to obtain the SBS latex. The SBS latex prepared by the method provided by the invention has high softening point, excellent performance, high solid content and good stability, can be stored effectively, and can be applied to emulsifier emulsified asphalt of different types. In addition, the SBS glue solution adopted by the invention comes from the semi-finished product of an industrial production process, is hydrogenated and unagglomerated glue solution. Compared with practice of adding an SBS product into a solvent to conduct dissolution and then performing emulsification, the cost is greatly saved, and the stability of SBS latex is improved.
Description
Technical field
The present invention relates to polymeric material field, particularly a kind of preparation method of SBS latex.
Background technology
SBS, as a kind of excellent properties-correcting agent having high and low temperature performance concurrently, is widely used in modifying asphalt industry.But solid SBS modifier is when modified emulsifying asphalt, add massfraction higher than 3% time emulsified bitumen stability poor.
Industrial production SBS finished product is for monomer with divinyl, vinylbenzene, hexanaphthene is solvent, butyllithium is initiator, tetrahydrofuran (THF) (THF) is structure regulator, silicon tetrachloride is coupler, through anionoid polymerization synthesis SBS basis glue, then adopts luxuriant system catalyst system to complete through selectivity and (comprises 1 to butadiene segment in SBS molecule, 2-structure and Isosorbide-5-Nitrae-structure) double bond carries out selec-tive hydrogenation.Glue after hydrogenation carries out drying after elutriation method carries out being condensed into particle, finally grinds to form powder, obtains SBS finished product, be i.e. solid SBS modifier.In prior art, SBS finished product is dissolved in organic solvent to add emulsifying agent, water again by the preparation method of SBS latex, and some auxiliary agents carry out emulsification and are prepared from.The patent of invention that application publication number is " CN102936345A " discloses the preparation method of SBS latex, emulsifying agent, solvent is mixed with SBS, is slowly joined in mixture by water, after placing 30min, add stablizer and flocculation agent, then underpressure distillation, obtain SBS latex.Adopt finished product SBS(and solid SBS modifier) prepare that SBS latex cost is high, complex process, and high-content SBS can cause emulsified bitumen poor stability, and need to add stablizer.
In addition, emulsified bitumen emulsifying agent used has cationic emulsifier, anionic emulsifier and nonionic emulsifying agent usually.Therefore the SBS latex prepared by respective type emulsifying agent must be selected when selecting latex.This requires the SBS latex that different process formula is prepared to prepare dissimilar emulsifying agent, poor universality.
Summary of the invention
The present invention, in order to make up the deficiencies in the prior art, the invention provides cost low, and products obtained therefrom good stability, the storage time is long, asphalt modification is effective, the preparation method of the SBS latex of highly versatile.
The present invention is achieved through the following technical solutions:
A preparation method for SBS latex, comprises the following steps:
1) 10-60 weight parts water and 1-8 weight part nonionic emulsifier are mixed, and be warming up to 40-70 DEG C;
2) to divide after for several times adding 100-200 weight part hydrogenation and SBS work in-process before elutriation method cohesion, and adopt and to shear and stirring makes described SBS work in-process and water, nonionic emulsifier be uniformly dispersed;
3) solvent brought into of remove portion water and described SBS work in-process, obtains SBS latex.
Preferably, the preparation method of described SBS latex, in step 1), water and described nonionic emulsifier and mass ratio be 10:1.
Preferably, the preparation method of described SBS latex, nonionic emulsifier described in step 1) is OP series non-ionic surfactants.
Preferably, the preparation method of described SBS latex, step 2) described in SBS work in-process be the hexanaphthene glue that the road of solid content 17% changes 2#SBS.
Further, the preparation method of described SBS latex, step 2) in, the mass ratio of described SBS work in-process and water is not less than 4:1.
Preferably, the preparation method of described SBS latex, step 2) middle shear rate is 1500-2500r/min.
Further, the preparation method of described SBS latex, step 2) middle shear rate is 2000r/min.
Preferably, the preparation method of described SBS latex, step 2) add described SBS work in-process at every turn after lasting shear time be no more than 10min.
Beneficial effect of the present invention:
SBS latex softening temperature prepared by the present invention is high, and performance is excellent; And solid content is high, viscosity is low, has good stability, and can effectively store.Because the emulsifying agent adopted is nonionic emulsifying agent, thus prepared latex is applicable to emulsified bitumen prepared by dissimilar emulsifying agent, is a kind of excellent property, can be applicable to the high-quality emulsion of cationic, anionic and non-ionic type emulsified bitumen.
In addition, the SBS glue that the present invention adopts comes from the work in-process of Industrial processes.The present invention adopt raw material be uncongealed glue after hydrogenation, compare SBS product again solubilizing agent dissolve after emulsification greatly saved cost.
Embodiment
The present invention's solid content used be 17% to change SBS molecular structure in 2#SBS glue be hub-and-spoke configuration in road, provided by China Petrochemical Industry's Yueyang petrochemical industry;
The present invention's middle extra large 70# emulsifying base pitch used is made by oneself by Shandong Dashan Road & Bridge Co., Ltd., and solid content is 65%;
The present invention Shandong used 70# emulsifying base pitch is made by oneself by Shandong Dashan Road & Bridge Co., Ltd., and solid content is 65%;
Comparative example 1
According to application publication number for the preparation method of the SBS latex disclosed in the Chinese invention patent of " CN102936345A " prepares SBS latex.Compare for 4:100 by SBS latex and emulsifying base asphalt quality, in middle extra large 70# emulsifying base pitch, add the SBS latex prepared by this comparative example, and fully mix, make modified emulsifying asphalt.
The modified emulsifying asphalt obtained to this comparative example according to standard GB/T/T4507-2014 carries out softening temperature test (softening temperature surveys twice, and result is as shown in table 1), and tests its granularity (result is as shown in table 2) according to standard GB/T/T4507-2014.
Comparative example 2
According to application publication number for the preparation method of the SBS latex disclosed in the Chinese invention patent of " CN102936345A " prepares SBS latex.Compare for 4:100 by SBS latex and emulsifying base asphalt quality, in the 70# emulsifying base pitch of Shandong, add the SBS latex prepared by this comparative example, and fully mix, make modified emulsifying asphalt.
The modified emulsifying asphalt obtained to this embodiment according to standard GB/T/T4507-2014 carries out softening temperature test (softening temperature surveys twice, and result is as shown in table 1), and tests its granularity (result is as shown in table 2) according to standard GB/T/T4507-2014.
Embodiment 1
0.3 kilogram of triton x-100 emulsifying agent and 3 kg of water are added in the reactor of 20 liter capacities, stir and be heated to 60 DEG C, unlatching shears is sheared, speed governing shearing rate is 2000r/min, add in four batches 12 kilograms of solid contents be 17% road change 2#SBS glue, every batch add material continue shear 10min, take out negative pressure with vacuum pump, control vacuum tightness between 0.01-0.02MPa, finally obtain the SBS latex that 5.1 kilograms of solid contents are 40%.
Compare for 4:100 by SBS latex and emulsifying base asphalt quality, in middle extra large 70# emulsifying base pitch, add the SBS latex prepared by the present embodiment, and fully mix, make modified emulsifying asphalt.
The modified emulsifying asphalt obtained to this embodiment according to standard GB/T/T4507-2014 carries out softening temperature test (softening temperature surveys twice, and result is as shown in table 1), and tests its granularity (result is as shown in table 2) according to standard GB/T/T4507-2014.
Embodiment 2
In the reactor of 2 tons, add 70 kg of water and 7 kilograms of triton x-100 emulsifying agents, stir and be warming up to 60 DEG C, take out negative pressure, vacuum degree control is at 0.01-0.02MPa; Cross grinding machine in outer circulation still to shear, with the time-division pump into for ten times solid content be 17% road change 2#SBS glue 280 kilograms, every batch add material after continue outer circulation and cross after 10min sheared by grinding machine and stop outer circulation; Constant temperature 60 DEG C vacuumizes solvent evaporated hexanaphthene; Finally obtain the SBS latex that 120 kg solid content is 40%.
Compare for 4:100 by SBS latex and emulsifying base asphalt quality, in the 70# emulsifying base pitch of Shandong, add the SBS latex prepared by the present embodiment, and fully mix, make modified emulsifying asphalt.
The modified emulsifying asphalt obtained to this embodiment according to standard GB/T/T4507-2014 carries out softening temperature test (softening temperature surveys twice, and result is as shown in table 1), and tests its granularity (result is as shown in table 2) according to standard GB/T/T4507-2014.
The softening temperature contrast table of table 1 comparative example and embodiment gained modified emulsifying asphalt
Table 2 comparative example and embodiment gained modified emulsifying asphalt granularity contrast table
Can be obtained by table 1: adopt processing method of the present invention, with the latex softening temperature of SBS glue prepared by raw material apparently higher than common SBS latex.
Can be obtained by table 2: the SBS latex laser particle size adopting processing method of the present invention to prepare has two distributions, 1um and 100um respectively, and SBS latex prepared by usual way only has 1um size distribution, describe the part being mainly 100um particle diameter that modified emulsifying asphalt works to softening temperature.
Embodiment 3
0.4 kilogram of OP-10 emulsifying agent and 3 kg of water are added in the reactor of 20 liter capacities, stir and be heated to 60 DEG C, unlatching shears is sheared, speed governing shearing rate is 2500r/min, criticize in five batches add 13 kilograms of solid contents be 17% road change 2#SBS glue, every batch add material continue shear 8min, take out negative pressure with vacuum pump, control vacuum tightness between 0.01-0.02MPa, finally obtain the SBS latex that 5.06 kilograms of solid contents are 40%.
Embodiment 4
0.25 kilogram of OP-13 emulsifying agent and 2 kg of water are added in the reactor of 20 liter capacities, stir and be heated to 55 DEG C, unlatching shears is sheared, speed governing shearing rate is 2500r/min, add in six batches 10 kilograms of solid contents be 17% road change 2#SBS glue, every batch add material continue shear 8min, take out negative pressure with vacuum pump, control vacuum tightness between 0.01-0.02MPa, finally obtain the SBS latex that 3.2 kilograms of solid contents are 40%.
Embodiment 5
0.35 kilogram of OP-15 emulsifying agent and 3 kg of water are added in the reactor of 20 liter capacities, stir and be heated to 60 DEG C, unlatching shears is sheared, speed governing shearing rate is 2000r/min, add in four batches 14 kilograms of solid contents be 17% road change 2#SBS glue, every batch add material continue shear 10min, take out negative pressure with vacuum pump, control vacuum tightness between 0.01-0.02MPa, finally obtain the SBS latex that 5.15 kilograms of solid contents are 40%.
Claims (8)
1. a preparation method for SBS latex, is characterized in that, comprises the following steps:
1) 10-60 weight parts water and 1-8 weight part nonionic emulsifier are mixed, and be warming up to 40-70 DEG C;
2) to divide after for several times adding 100-200 weight part hydrogenation and SBS work in-process before elutriation method cohesion, and adopt and to shear and stirring makes described SBS work in-process and water, nonionic emulsifier be uniformly dispersed;
3) solvent brought into of remove portion water and described SBS work in-process, obtains SBS latex.
2. the preparation method of SBS latex as claimed in claim 1, is characterized in that: in step 1), water and described nonionic emulsifier and mass ratio be 10:1.
3. the preparation method of SBS latex as claimed in claim 1, is characterized in that: nonionic emulsifier described in step 1) is OP series non-ionic surfactants.
4. the preparation method of SBS latex as claimed in claim 1, is characterized in that: step 2) described in SBS work in-process be the hexanaphthene glue that the road of solid content 17% changes 2#SBS.
5. the preparation method of SBS latex as claimed in claim 4, is characterized in that: step 2) in, the mass ratio of described SBS work in-process and water is not less than 4:1.
6. the preparation method of SBS latex as claimed in claim 4, is characterized in that: step 2) middle shear rate is 1500-2500r/min.
7. the preparation method of SBS latex as claimed in claim 6, is characterized in that: step 2) middle shear rate is 2000r/min.
8. the preparation method of SBS latex as claimed in claim 1, is characterized in that: step 2) add described SBS work in-process at every turn after lasting shear time be no more than 10min.
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| CN201510669820.4A CN105237780B (en) | 2015-10-16 | 2015-10-16 | A kind of preparation method of SBS latex |
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| CN201510669820.4A CN105237780B (en) | 2015-10-16 | 2015-10-16 | A kind of preparation method of SBS latex |
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| CN105237780B CN105237780B (en) | 2017-11-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109777132A (en) * | 2019-01-16 | 2019-05-21 | 武汉市市政建设集团有限公司 | A kind of SBS modified emulsifying asphalt based on high solids content SBS lotion |
| CN112442191A (en) * | 2019-09-05 | 2021-03-05 | 深圳市安品有机硅材料有限公司 | Environment-friendly SBS latex and preparation method thereof |
| CN112442197A (en) * | 2019-09-05 | 2021-03-05 | 深圳市安品有机硅材料有限公司 | Water-based SBS latex and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050246A (en) * | 2007-05-16 | 2007-10-10 | 中国地质大学（武汉） | Hydrogenation method for thermoplastic elastomer in series of styrene |
| CN102120889A (en) * | 2011-04-29 | 2011-07-13 | 西安国琳实业有限公司 | SBS (styrene-butadiene-styrene) modified emulsified asphalt composition and preparation method thereof |
| CN104861089A (en) * | 2014-02-25 | 2015-08-26 | 中国石油化工股份有限公司 | Method for removing alkaline impurities in SEBS rubber liquid or SBS rubber liquid |
-
2015
- 2015-10-16 CN CN201510669820.4A patent/CN105237780B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101050246A (en) * | 2007-05-16 | 2007-10-10 | 中国地质大学（武汉） | Hydrogenation method for thermoplastic elastomer in series of styrene |
| CN102120889A (en) * | 2011-04-29 | 2011-07-13 | 西安国琳实业有限公司 | SBS (styrene-butadiene-styrene) modified emulsified asphalt composition and preparation method thereof |
| CN104861089A (en) * | 2014-02-25 | 2015-08-26 | 中国石油化工股份有限公司 | Method for removing alkaline impurities in SEBS rubber liquid or SBS rubber liquid |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109777132A (en) * | 2019-01-16 | 2019-05-21 | 武汉市市政建设集团有限公司 | A kind of SBS modified emulsifying asphalt based on high solids content SBS lotion |
| CN109777132B (en) * | 2019-01-16 | 2021-04-27 | 武汉市市政建设集团有限公司 | SBS modified emulsified asphalt based on high solid content SBS emulsion |
| CN112442191A (en) * | 2019-09-05 | 2021-03-05 | 深圳市安品有机硅材料有限公司 | Environment-friendly SBS latex and preparation method thereof |
| CN112442197A (en) * | 2019-09-05 | 2021-03-05 | 深圳市安品有机硅材料有限公司 | Water-based SBS latex and preparation method thereof |
| CN112442191B (en) * | 2019-09-05 | 2023-01-17 | 深圳市安品有机硅材料有限公司 | Environment-friendly SBS latex and preparation method thereof |
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| CN105237780B (en) | 2017-11-14 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Jijiang Inventor after: Lv Xiaobo Inventor after: Hu Lidong Inventor before: Zhang Guizhong |
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Effective date of registration: 20160527 Address after: 238, room 2, building 69, Pioneer Park, No. 250000 Huayang Road, Licheng District, Shandong, Ji'nan Applicant after: Shandong Dashan Road&Bridge Co., Ltd. Address before: 274000 Shandong city of Heze province of East Road, Maoyebaihuo West No. 39-2 Applicant before: HEZE HAINUO INTELLECTUAL PROPERTY SERVICES CO., LTD. |
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