CN1351095A - Process for preparing modified building asphalt - Google Patents
Process for preparing modified building asphalt Download PDFInfo
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- CN1351095A CN1351095A CN 00123137 CN00123137A CN1351095A CN 1351095 A CN1351095 A CN 1351095A CN 00123137 CN00123137 CN 00123137 CN 00123137 A CN00123137 A CN 00123137A CN 1351095 A CN1351095 A CN 1351095A
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- polymkeric substance
- asphalt
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Abstract
A modified asphalt for building is prepared from basic asphalt with penetration of 60-150 1/10 mm and soft point of 30-70 deg.C and two or more polymers as modifier (10-25 wt%). The resultant asphalt features its improved high-and low-temp performance and themp sensing nature.
Description
The present invention relates to the production method of building asphalt, especially basic asphalt is carried out the method for composite modified production building asphalt with polymkeric substance.
Pitch is that black arrives the dun solid-state or thick material of semi-solid state, and it is present in nature or is made by petroleum refining process.Because it has good adhesivity and watertightness and weathering resistance, pitch has been widely used in road surface agglutinate and roof waterproof.
In recent years, though the quality and the operating technique that with waterproof and dampproof are the building asphalt of purpose improve a lot, but still exist that the trickling of cold cracking, high temperature, intensity are low, the problem of poor flexibility, restricted the raising in waterproofing work life-span, therefore, the various building asphalt method for quality of improving have appearred in succession.
A kind of method is a catalytic oxidation, adopts H
3PO
4Deng making catalyzer, basic asphalt is carried out catalyzed oxidation, not only can improve speed of response, can also improve bituminous temperature-sensitive performance.(for example Chinese patent, application number 97121664).
Another kind is a chemic modified method, promptly with a certain properties-correcting agent basic asphalt is carried out chemical modification, as US4, and 874,432, utilize lipid acid or resinous acid that saponified pitch is carried out chemical modification, can produce the building asphalt of better performances.
With above-mentioned two kinds of methods, though the high and low temperature performance and the temperature sensibility of building asphalt had some improvement, for increasing, concerning water resistance requires higher senior constructure, its performance still is apparent not enough.
Also having a kind of method, is exactly the method (for example US4,868,233) of more and more being produced building asphalt by polymer modification that people accepted.But these technology all are to adopt a certain polymkeric substance, basic asphalt is carried out single modification, though can improve the pitch degree of gelation effectively, the bituminous elastic deformability strengthens, temperature sensibility diminishes, but with single properties-correcting agent pitch is carried out modification, on the one hand according to different polymkeric substance, can only lay particular emphasis on the improvement to asphalt high-temperature stability or low-temperature cracking-resistance, it is difficult improving the high-temperature stability and the low-temperature cracking-resistance of bearing greatly owing to temperature variation simultaneously.On the other hand, even the minority polymkeric substance is obvious to bituminous high and low temperature improved performance, but because add-on more (generally being not less than 14%), and cost an arm and a leg, cause cost too high, make the user beyond affordability.
Purpose of the present invention just is based on above-mentioned situation, proposes a kind of production method of modified asphalt for construction, not only makes pitch have high-temperature stability, low-temperature cracking-resistance and temperature-sensitive performance preferably concurrently, and, the modifying asphalt cost is decreased.
The production method of modified asphalt for construction of the present invention is:
Use polymkeric substance that basic asphalt is carried out modification, described polymkeric substance is at least 2 kinds, it is the 10w%～25w% of modifying asphalt gross weight that polymkeric substance adds total amount, the add-on of every kind of polymkeric substance is the 1w%～20w% of modifying asphalt gross weight, the penetration degree that described basic asphalt is 25 ℃ is (60～150) 1/10mm (assay method is GB/T4509), and softening temperature is 30 ℃～70 ℃ (the softening point measurement method is GB/T4507).
The used basic asphalt of the present invention is the pitch that is obtained through various technologies by crude oil such as paraffin-intermediate base, cycloalkanes-intermediate base, intermediate base, cycloalkyl, comprising solvent deasphalting (de-oiled asphalts such as propane, butane), residual oil, oxidized bitumen and blending pitch and the pitch that obtained by their combination process.
The kind of described adding polymkeric substance is at least 2 kinds, generally can add 2～6 kinds, and the operable polymkeric substance of the present invention comprises, thermoplastic elastomer class such as SBS etc., rubber polymer such as SBR etc., type thermoplastic resin such as PE, APP, b-propylene copolymer etc.According to requirement to product, adopt the polymkeric substance of above-mentioned two or more, join in the basic asphalt according to a certain percentage and go.Because SBS has good modified effect, be first-selected polymkeric substance therefore, also can not select SBS, other polymkeric substance can be selected according to the performance of product.But selected polymkeric substance preferably has and a kind of the bituminous high-temperature behavior is improved obviously, has at least a kind of the bituminous low-temperature performance to be improved obviously.
The add-on of described every kind of polymkeric substance is preferably the 4w%～9w% of modifying asphalt gross weight, and described polymkeric substance adds 10w%～17w% that total amount is preferably the modifying asphalt gross weight.
The adding mode of polymkeric substance adopts direct addition method, installs to be high shearing mixing emulsor and colloidal mill, and mixing temperature is 150 ℃～220 ℃, is preferably 170 ℃～190 ℃, and mixing time is 0.5h～3h, is preferably 0.7h～2h.Polymkeric substance generally will be distinguished adding successively, also can add together, and the joining day is 1min～20min.Concrete method is: at first basic asphalt is heated to 150 ℃～160 ℃, when stirring with high shearing mixing emulsor or colloidal mill, add polymkeric substance successively or together with 1min～20min, behind whole adding polymkeric substance, pick up counting, mix 0.5h～3h continuously, temperature between mixing period preferably remains on 170 ℃～190 ℃.
The present invention will be further described below in conjunction with specific embodiment.
Embodiment 1
In basic asphalt, add SBS and two kinds of polymkeric substance of b-propylene copolymer.
The character of basic asphalt is listed in table 1.The SBS model is YH-792, linear structure, and block is 40/60 than S/B, molecular-weight average 10 * 10
4B-propylene copolymer is a Type B, ethylene content 10%, and melting index 20, Rockwell hardness 90, heat-drawn wire is 115 ℃.
At first basic asphalt is heated to 150 ℃～160 ℃, uses high shearing mixing emulsor, when stirring, SBS and b-propylene copolymer are joined in the pitch successively with 3min～5min.Make mixing temperature remain on 170 ℃～190 ℃ then, whole sample mixes 2h continuously.The add-on of SBS is 5.0%, and the b-propylene copolymer add-on is 7.0%.The character of institute's test sample product is listed in table 2.
The character of table 1 basic asphalt
| Project | 25 ℃ of 1/10mm of penetration degree | Softening temperature ℃ | 25 ℃ of cm of ductility | ????PI |
| Numerical value | ???.104 | ??45.4 | ???73 | ????-0.541 |
The composite modified test-results of table 2 SBS and b-propylene copolymer
| Project | 25 ℃ of 1/10mm of penetration degree | Softening temperature ℃ | Brittle point ℃ | ????PI | Steam output % | Flash-point ℃ |
| Modifying asphalt character | ???42 | ??110.0 | ??-14.0 | ???7.143 | ??0.032 | ??＞280 |
The ductilometers method is GB/T4508 in the table, and the brittle point assay method is GB/T4510, and the flashing test method is GB/T267, and atmometry is GB/T11964.Following data determination method is all identical therewith.
Table 1, table 2 data show, with SBS and b-propylene copolymer basic asphalt is carried out composite modifiedly, not only can improve its high and low temperature performance simultaneously, and the PI value increases more remarkable, illustrate that temperature sensibility also improves, can produce the modified asphalt for construction of better performances.The quality of the building asphalt of being produced meets Japanese water proofing asphalt JISK2207-1980 standard.
Embodiment 2
In pitch, add SBS and two kinds of polymkeric substance of PE.
The character of basic asphalt is with example 1, and polymkeric substance is SBS and two kinds of polymkeric substance of PE, and the model of SBS is with example 1, and PE is LLDPE (model is LL0209).The add-on of SBS is 8.0w%, and the add-on of PE is 4.0w%, and polymkeric substance adds in 3min～5min together.The character of institute's test sample product is listed in table 3.
The composite modified test-results of table 3 SBS and PE
| Project | 25 ℃ of 1/10mm of penetration degree | Softening temperature ℃ | Brittle point ℃ | ????PI | Steam output % | Flash-point ℃ |
| Modifying asphalt character | ????39 | ??96.0 | ??-16.5 | ??5.580 | ??0.02 | ?＞280 |
Table 3 data show that SBS and PE are to the building asphalt of the composite modified production of basic asphalt, and its high and low temperature performance and temperature sensibility all improve, and meet the standard of Japanese water proofing asphalt JISK2207-1980.
Embodiment 3
In pitch, add SBS, APP and three kinds of polymkeric substance of b-propylene copolymer.
The character of basic asphalt is with example 1, and the adding mode is with example 1.Polymkeric substance is SBS, APP (Atactic Polypropelene) and b-propylene copolymer, and the model of SBS and b-propylene copolymer is with example 1.The add-on of SBS is 4.0w%, and the add-on of APP is 6.0w%, and the add-on of b-propylene copolymer is 4.0w%.The character of institute's test sample product is listed in table 4.
The composite modified test-results of table 4 SBS, APP and b-propylene copolymer
| Project | 25 ℃ of 1/10mm of penetration degree | Softening temperature ℃ | Brittle point ℃ | ????PI | Steam output % | Flash-point ℃ |
| Modifying asphalt character | ????34 | ??95.8 | ??-15.5 | ??5.239 | ??0.035 | ??＞280 |
The result of table 4 shows, SBS, APP and b-propylene copolymer to basic asphalt carry out composite modified, can produce all modified asphalt for construction preferably of high and low temperature performance and temperature sensibility equally, meet Japanese water proofing asphalt JISK-1980 standard.
Claims (9)
1, a kind of production method of modified asphalt for construction, comprise and use polymkeric substance that basic asphalt is carried out modification, it is characterized in that described polymkeric substance is at least 2 kinds, it is 10%～25% of modifying asphalt gross weight that polymkeric substance adds total amount, the add-on of every kind of polymkeric substance is 1w%～20w%, the penetration degree that described basic asphalt is 25 ℃ is 60～150 1/10mm, and softening temperature is 30 ℃～70 ℃.
2,, it is characterized in that described basic asphalt comprises solvent deoiling pitch, residual oil, oxidized bitumen and blending pitch and the pitch that is obtained by their combination process according to the described modified asphalt for construction production method of claim 1.
3,, it is characterized in that described polymkeric substance is the 2-6 kind according to the described modified asphalt for construction production method of claim 1.
4,, it is characterized in that described polymkeric substance is selected from thermoplastic elastomer base polymer, rubber polymer and thermoplastic resin base polymer according to the described modified asphalt for construction production method of claim 1.
5, according to the described modified asphalt for construction production method of claim 1, have at least in the polymkeric substance that it is characterized in that being added and a kind of the bituminous high-temperature behavior is improved obviously, have at least and a kind of the bituminous low-temperature performance is improved obviously.
6, according to the described modified asphalt for construction production method of claim 1, it is characterized in that the polymkeric substance of described adding comprises SBS.
7, according to the described modified asphalt for construction production method of claim 1, the add-on that it is characterized in that described every kind of polymkeric substance is 1w%～20w%.
8,, it is characterized in that it is the 10w%～25w% of modifying asphalt gross weight that described polymkeric substance adds total amount according to the described modified asphalt for construction production method of claim 1.
9, according to the described modified asphalt for construction production method of claim 1, it is characterized in that described polymkeric substance adding method is direct addition method, to install and be that high shearing mixing emulsor and colloidal mill, mixing temperature are 150 ℃～220 ℃, mixing time is 0.5h～3h.Polymkeric substance generally will be distinguished adding successively, also can add together, and the joining day is 1min～20min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123137 CN1111567C (en) | 2000-10-26 | 2000-10-26 | Process for preparing modified building asphalt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00123137 CN1111567C (en) | 2000-10-26 | 2000-10-26 | Process for preparing modified building asphalt |
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| CN1351095A true CN1351095A (en) | 2002-05-29 |
| CN1111567C CN1111567C (en) | 2003-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 00123137 Expired - Fee Related CN1111567C (en) | 2000-10-26 | 2000-10-26 | Process for preparing modified building asphalt |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103804929A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Modified asphalt composition and preparation method thereof |
| CN103804925A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Modified asphalt and preparation method thereof |
| CN103992808A (en) * | 2014-05-21 | 2014-08-20 | 常熟市联邦化工有限公司 | Process for recycling C10 heavy aromatic residue oil |
| CN106317917A (en) * | 2016-08-12 | 2017-01-11 | 中国石油化工股份有限公司 | Building asphalt and preparing method thereof |
| CN108384253A (en) * | 2018-01-31 | 2018-08-10 | 中国石油天然气股份有限公司长庆石化分公司 | A kind of building asphalt prepared using hard de-oiled asphalt |
-
2000
- 2000-10-26 CN CN 00123137 patent/CN1111567C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103804929A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Modified asphalt composition and preparation method thereof |
| CN103804925A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Modified asphalt and preparation method thereof |
| CN103804925B (en) * | 2012-11-07 | 2016-01-20 | 中国石油化工股份有限公司 | A kind of modifying asphalt and preparation method thereof |
| CN103992808A (en) * | 2014-05-21 | 2014-08-20 | 常熟市联邦化工有限公司 | Process for recycling C10 heavy aromatic residue oil |
| CN106317917A (en) * | 2016-08-12 | 2017-01-11 | 中国石油化工股份有限公司 | Building asphalt and preparing method thereof |
| CN108384253A (en) * | 2018-01-31 | 2018-08-10 | 中国石油天然气股份有限公司长庆石化分公司 | A kind of building asphalt prepared using hard de-oiled asphalt |
| CN108384253B (en) * | 2018-01-31 | 2020-06-02 | 中国石油天然气股份有限公司长庆石化分公司 | Building asphalt prepared by hard deoiled asphalt |
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| Publication number | Publication date |
|---|---|
| CN1111567C (en) | 2003-06-18 |
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Granted publication date: 20030618 Termination date: 20111026 |