CN104327523A - Asphalt improver and preparation method thereof - Google Patents
Asphalt improver and preparation method thereof Download PDFInfo
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- CN104327523A CN104327523A CN201410636247.2A CN201410636247A CN104327523A CN 104327523 A CN104327523 A CN 104327523A CN 201410636247 A CN201410636247 A CN 201410636247A CN 104327523 A CN104327523 A CN 104327523A
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- preparation
- improving agent
- polystyrene latex
- styrene
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Abstract
An asphalt improver and a preparation method thereof belong to the field of asphalt improver. According to the invention, due to anionic polymerization, the conversion rate of butadiene and styrene monomers is high, the yield is high and few side effects are caused; all additive components take a synergistic effect so that the asphalt improver disclosed by the invention can effectively improve the stability, strength and toughness of asphalt. The asphalt improver has the advantages that the preparation process is simple and convenient to operate and raw material cost is low, thus being favorable for industrially expanded production.
Description
Technical field
The present invention relates to a kind of pitch improving agent, particularly relate to a kind of pitch improving agent and preparation method thereof.
Background technology
Along with increasing rapidly of national economy, highway in China construction enters good developing period.Expressway construction achievement is shocking, but the earlier period damage problem of bituminous concrete pavement is more and more general.By inquiry, within 1 year, just there is serious pavement quality problem afterwards being delivered for use in the bituminous concrete pavement of the current domestic overwhelming majority, namely being open to traffic even then of having be damaged, damage is mainly manifested in and first occurs among a small circle with local, and then expand to extensive damage, comprise loose, check crack, crack, hole, hole, local rut, local bellding etc.In order to improve asphalt performance, usually adopt the modes such as process modification, structurally-modified and modifier modification to improve the service level of bituminous pavement.Therefore, require further to improve road surface resistance to flow, i.e. the ability of Rut resistance under high temperature; Improve flexible and elasticity, i.e. the ability of cracking resistance under low temperature; Improve abrasion performance ability and increase the service life.
So-called process modification refers to that suitable adjusting process program is to improve asphalt performance in process for preparing asphalt, as improved the temperature sensibility of paraffin-based asphalt except the content of wax in deasphalting, being improved the high temperature stability etc. of pitch by oxidizing process.And structure modified technology refers to increase structural sheet to improve the use properties of bituminous pavement in asphalt pavement structure, the absorption of stress film that Reflection Cracking extends as arranged, establish geo-grid overlay to improve the measure such as asphalt pavement rut resisting and fatigue property.Modifier modification pitch refers to and add suitable properties-correcting agent to improve pitch energy in pitch, is the method for modifying that research is abundant and the most deep at present.For modifying asphalt, the selection of its modifier type and the determination of dosage are satisfied the need and are had important impact by performance.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, technical problem to be solved by this invention is, provides a kind of pitch improving agent of improvement, raw materials cost is low, pavement quality good, applied range.
Pitch improving agent of the present invention is made up of the raw material of following weight parts:
Styrene-butadiene rubber(SBR) 30-40 part;
Deionized water 15-20 part;
BDO 8-12 part;
Ethyl phenol polyoxyethylene polyoxypropylene ether 10-15 part;
Virahol 10-16 part;
Acetone 2-5 part;
Polyvinylpyrrolidone 1-3 part.
Wherein said styrene-butadiene rubber(SBR) is synthesized by following technique:
(1) initiator synthesis: with normal hexane replacement fluid paraffin gradually, clear up 2-3 time, the whiteruss on removing lithium powder surface, add the normal hexane of 30-50ml, serpentine condenser is installed, gets 10-15ml n-propylcarbinyl chloride and add constant pressure funnel, dropwise in 1-2h, ice-water bath reaction 4-6h.Then temperature is risen to 80-100 DEG C gradually, logical water of condensation, condensing reflux reaction 1-3h, after reaction, is shifted n-butyl lithium initiator by interior transfer method, logical argon gas low-temperature storage;
(2) styrene-butadiene rubber(SBR) polymerization: polymerization bottle is cleaned, and 10-12h is dried at 100-120 DEG C, vacuumize/continuous three times of applying argon gas, with the air in removing system, 30-50ml hexanaphthene, 2-5ml n-butyl lithium initiator, 6-10g divinylic monomer and 10-20ml styrene monomer is added respectively to polymerization bottle, at 50-80 DEG C of temperature, confined reaction 4-6h, after reaction, add 1-2ml degassed absolute ethanol termination reaction, then add 20-50ml washes of absolute alcohol precipitation polymers, obtain styrene butadiene rubber latex.
The preparation technology of pitch improving agent of the present invention is as follows:
By each component according to styrene-butadiene rubber(SBR), deionized water, 1, the order of 4-butyleneglycol, ethyl phenol polyoxyethylene polyoxypropylene ether, Virahol, acetone, polyvinylpyrrolidone adds blender respectively, with the rotating speed of 200-300r/min, at 60-90 DEG C, stir 2-4h and namely obtain pitch improving agent of the present invention.
the invention has the beneficial effects as follows:
1, anionoid polymerization of the present invention make divinyl and styrene monomer conversion rate high, productive rate is high, few side effects;
2, the synergy of each binder component, makes pitch improving agent of the present invention can effectively improve Bituminous stabilized, intensity and toughness;
3, the present invention have that preparation technology is simple, easy to operate, raw materials cost etc. advantage, be conducive to industrialization expanding production.
Embodiment
Below in conjunction with specific embodiment, the present invention will be further described, and specific embodiment does not limit the present invention.
embodiment 1:the invention provides a kind of pitch improving agent, be made up of the component of following weight part:
30 parts, styrene-butadiene rubber(SBR);
Deionized water 15 parts;
BDO 8 parts;
10 parts, ethyl phenol polyoxyethylene polyoxypropylene ether;
Virahol 10 parts;
2 parts, acetone;
Polyvinylpyrrolidone 1 part.
The preparation technology of pitch improving agent of the present invention is as follows:
(1) initiator synthesis: with normal hexane replacement fluid paraffin gradually, clear up 2 times, the whiteruss on removing lithium powder surface, add the normal hexane of 30ml, serpentine condenser is installed, gets 10ml n-propylcarbinyl chloride and add constant pressure funnel, dropwise in 1h, ice-water bath reaction 4h.Then temperature is risen to 80 DEG C gradually, logical water of condensation, condensing reflux reaction 1h, after reaction, is shifted n-butyl lithium initiator by interior transfer method, logical argon gas low-temperature storage;
(2) styrene-butadiene rubber(SBR) polymerization: polymerization bottle is cleaned, and 10h is dried at 100 DEG C, vacuumize/continuous three times of applying argon gas, with the air in removing system, 30ml hexanaphthene, 2ml n-butyl lithium initiator, 6g divinylic monomer and 10ml styrene monomer is added respectively to polymerization bottle, at 50 DEG C of temperature, confined reaction 4h, after reaction, add 1ml degassed absolute ethanol termination reaction, then add 20ml washes of absolute alcohol precipitation polymers, obtain styrene butadiene rubber latex, productive rate is 98.6% as calculated.
(3) above-mentioned each component is added blender respectively, with the rotating speed of 200r/min, at 60 DEG C, stir 2h and namely obtain pitch improving agent of the present invention.
embodiment 2:the invention provides a kind of pitch improving agent, be made up of the component of following weight part:
32 parts, styrene-butadiene rubber(SBR);
Deionized water 16 parts;
BDO 10 parts;
12 parts, ethyl phenol polyoxyethylene polyoxypropylene ether;
Virahol 13 parts;
3 parts, acetone;
Polyvinylpyrrolidone 2 parts.
The preparation technology of pitch improving agent of the present invention is as follows:
(1) initiator synthesis: with normal hexane replacement fluid paraffin gradually, clear up 2 times, the whiteruss on removing lithium powder surface, add the normal hexane of 35ml, serpentine condenser is installed, gets 12ml n-propylcarbinyl chloride and add constant pressure funnel, dropwise in 1.5h, ice-water bath reaction 4h.Then temperature is risen to 85 DEG C gradually, logical water of condensation, condensing reflux reaction 1.5h, after reaction, is shifted n-butyl lithium initiator by interior transfer method, logical argon gas low-temperature storage;
(2) styrene-butadiene rubber(SBR) polymerization: polymerization bottle is cleaned, and 11h is dried at 110 DEG C, vacuumize/continuous three times of applying argon gas, with the air in removing system, 35ml hexanaphthene, 3ml n-butyl lithium initiator, 7g divinylic monomer and 12ml styrene monomer is added respectively to polymerization bottle, at 55 DEG C of temperature, confined reaction 4.5h, after reaction, add 1.5ml degassed absolute ethanol termination reaction, then add 25ml washes of absolute alcohol precipitation polymers, obtain styrene butadiene rubber latex, productive rate is 99.0% as calculated.
(3) above-mentioned each component is added blender respectively, with the rotating speed of 250r/min, at 70 DEG C, stir 2.5h and namely obtain pitch improving agent of the present invention.
embodiment 3:the invention provides a kind of pitch improving agent, be made up of the component of following weight part:
38 parts, styrene-butadiene rubber(SBR);
Deionized water 18 parts;
BDO 11 parts;
14 parts, ethyl phenol polyoxyethylene polyoxypropylene ether;
Virahol 15 parts;
4 parts, acetone;
Polyvinylpyrrolidone 2 parts.
The preparation technology of pitch improving agent of the present invention is as follows:
(1) initiator synthesis: with normal hexane replacement fluid paraffin gradually, clear up 3 times, the whiteruss on removing lithium powder surface, add the normal hexane of 40ml, serpentine condenser is installed, gets 14ml n-propylcarbinyl chloride and add constant pressure funnel, dropwise in 2h, ice-water bath reaction 5h.Then temperature is risen to 90 DEG C gradually, logical water of condensation, condensing reflux reaction 2h, after reaction, is shifted n-butyl lithium initiator by interior transfer method, logical argon gas low-temperature storage;
(2) styrene-butadiene rubber(SBR) polymerization: polymerization bottle is cleaned, and 11h is dried at 115 DEG C, vacuumize/continuous three times of applying argon gas, with the air in removing system, 45ml hexanaphthene, 4ml n-butyl lithium initiator, 9g divinylic monomer and 18ml styrene monomer is added respectively to polymerization bottle, at 70 DEG C of temperature, confined reaction 5h, after reaction, add 1.5ml degassed absolute ethanol termination reaction, then add 45ml washes of absolute alcohol precipitation polymers, obtain styrene butadiene rubber latex, productive rate is 97.9% as calculated.
(3) above-mentioned each component is added blender respectively, with the rotating speed of 280r/min, at 80 DEG C, stir 3h and namely obtain pitch improving agent of the present invention.
embodiment 4:the invention provides a kind of pitch improving agent, be made up of the component of following weight part:
40 parts, styrene-butadiene rubber(SBR);
Deionized water 20 parts;
BDO 12 parts;
15 parts, ethyl phenol polyoxyethylene polyoxypropylene ether;
Virahol 16 parts;
5 parts, acetone;
Polyvinylpyrrolidone 3 parts.
The preparation technology of pitch improving agent of the present invention is as follows:
(1) initiator synthesis: with normal hexane replacement fluid paraffin gradually, clear up 2-3 time, the whiteruss on removing lithium powder surface, add the normal hexane of 50ml, serpentine condenser is installed, gets 15ml n-propylcarbinyl chloride and add constant pressure funnel, dropwise in 2h, ice-water bath reaction 6h.Then temperature is risen to 100 DEG C gradually, logical water of condensation, condensing reflux reaction 3h, after reaction, is shifted n-butyl lithium initiator by interior transfer method, logical argon gas low-temperature storage;
(2) styrene-butadiene rubber(SBR) polymerization: polymerization bottle is cleaned, and 12h is dried at 120 DEG C, vacuumize/continuous three times of applying argon gas, with the air in removing system, 50ml hexanaphthene, 5ml n-butyl lithium initiator, 10g divinylic monomer and 20ml styrene monomer is added respectively to polymerization bottle, at 80 DEG C of temperature, confined reaction 6h, after reaction, add 2ml degassed absolute ethanol termination reaction, then add 50ml washes of absolute alcohol precipitation polymers, obtain styrene butadiene rubber latex, productive rate is 98.8% as calculated.
(3) above-mentioned each component is added blender respectively, with the rotating speed of 300r/min, at 90 DEG C, stir 4h and namely obtain pitch improving agent of the present invention.
Claims (8)
1. a pitch improving agent, is made up of following raw material, and described number is weight part:
Styrene-butadiene rubber(SBR) 30-40 part;
Deionized water 15-20 part;
BDO 8-12 part;
Ethyl phenol polyoxyethylene polyoxypropylene ether 10-15 part;
Virahol 10-16 part;
Acetone 2-5 part;
Polyvinylpyrrolidone 1-3 part.
2. a kind of pitch improving agent of claim 1, it is characterized in that: the preparation method of described polystyrene latex is: respectively by sodium lauryl sulphate, 1,4-butyleneglycol, deionized water add polymermaking autoclave, after stirring, the Potassium Persulphate added, then passes into styrene monomer, after reaction 6-8h, add 1.2-2.4g Resorcinol terminator, discharging after cooling, obtains polystyrene latex.
3. the preparation method of the polystyrene latex of claim 2, is characterized in that: the addition of sodium lauryl sulphate is 12.3-15.6g.
4. the preparation method of the polystyrene latex of claim 2, is characterized in that: the addition of BDO is 3.9-10.2g.
5. the preparation method of the polystyrene latex of claim 2, is characterized in that: the addition of deionized water is 12.9-17.5g.
6. the preparation method of the polystyrene latex of claim 2, is characterized in that: the addition of Potassium Persulphate is 1.2-3.8g.
7. the preparation method of the polystyrene latex of claim 2, is characterized in that: the addition of styrene monomer is 9.8-13.7g.
8. the preparation method of a kind of pitch improving agent according to claim 1, it is characterized in that: by each component according to styrene-butadiene rubber(SBR), deionized water, 1, the order of 4-butyleneglycol, ethyl phenol polyoxyethylene polyoxypropylene ether, Virahol, acetone, polyvinylpyrrolidone adds blender respectively, with the rotating speed of 200-300r/min, at 60-90 DEG C, stir 2-4h and namely obtain pitch improving agent of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410636247.2A CN104327523A (en) | 2014-11-13 | 2014-11-13 | Asphalt improver and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410636247.2A CN104327523A (en) | 2014-11-13 | 2014-11-13 | Asphalt improver and preparation method thereof |
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| CN104327523A true CN104327523A (en) | 2015-02-04 |
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| CN201410636247.2A Pending CN104327523A (en) | 2014-11-13 | 2014-11-13 | Asphalt improver and preparation method thereof |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1114844A1 (en) * | 1999-05-28 | 2001-07-11 | JSR Corporation | Emulsion of thermoplastic elastomer and process for producing the same |
| CN1519277A (en) * | 2003-01-22 | 2004-08-11 | 中国石油化工股份有限公司北京燕山分 | Modified compsn. of asphaltum and preparation method |
| CN1618862A (en) * | 2004-09-06 | 2005-05-25 | 山西省交通科学研究院 | Manufacturing method of liquid asphalt modifier |
-
2014
- 2014-11-13 CN CN201410636247.2A patent/CN104327523A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1114844A1 (en) * | 1999-05-28 | 2001-07-11 | JSR Corporation | Emulsion of thermoplastic elastomer and process for producing the same |
| CN1519277A (en) * | 2003-01-22 | 2004-08-11 | 中国石油化工股份有限公司北京燕山分 | Modified compsn. of asphaltum and preparation method |
| CN1618862A (en) * | 2004-09-06 | 2005-05-25 | 山西省交通科学研究院 | Manufacturing method of liquid asphalt modifier |
Non-Patent Citations (2)
| Title |
|---|
| 刘建平等: "《高分子科学与材料工程实验（第1版）》", 30 April 2005, 化学工业出版社 * |
| 黄建帆: "《化工产品技术经济手册 合成橡胶》", 31 July 1982, 化学工业部科学技术情报研究所 * |
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Application publication date: 20150204 |