CN104774478A - SBS modified asphalt suitable for extruding and moulding modified petroleum asphalt erosion resistant layer - Google Patents
SBS modified asphalt suitable for extruding and moulding modified petroleum asphalt erosion resistant layer Download PDFInfo
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- CN104774478A CN104774478A CN201510161821.8A CN201510161821A CN104774478A CN 104774478 A CN104774478 A CN 104774478A CN 201510161821 A CN201510161821 A CN 201510161821A CN 104774478 A CN104774478 A CN 104774478A
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Abstract
The invention relates to SBS modified asphalt suitable for extruding and moulding a modified petroleum asphalt erosion resistant layer and the SBS modified asphalt is mainly used for solving the problem that the petroleum asphalt erosion resistant layer flows at high temperatures, embrittles at low temperatures, and is weak in adhesive and hard to extrude and mould by using an extruder. The SBS modified asphalt suitable for extruding and moulding the modified petroleum asphalt erosion resistant layer comprises the following components by weight percent: petroleum asphalt, styrene-butadiene-styrene and high-density polyethylene at a ratio of 100:(6-9):(5-10). The SBS modified asphalt suitable for extruding and moulding the modified petroleum asphalt erosion resistant layer has the characteristic of being corrosion-resistant and waterproof. The modified petroleum asphalt can be suitable for production by an existing plastic extruder and has a relatively good laminar adhesive force with a protective layer.
Description
Technical field
The present invention relates to a kind of SBS modifying asphalt in the technical field of anticorrosion of oil-gas field surface engineering, especially a kind of SBS modifying asphalt formula being applicable to the extrusion moulding of modified oil pitch preservative coat.
Background technology
Namely petroleum pitch obtain applying more widely in the sixties as pipeline anticorrosion coating, in order to improve the problem of the trickling of its high temperature, low temperature brittleness, all carry out large quantifier elimination both at home and abroad, as modified rubber petroleum pitch, resin modified petroleum pitch, modifying plastics petroleum pitch etc., and drop into application.But modified pitch is all adopt traditional pouring technology shaping, and the research being applicable to the high viscosity modified oil pitch aspect of asphalt coating extrusion moulding is relatively less.Through investigation, the melt of petroleum pitch is identical with thermoplasticss such as polyethylene, belong to pseudoplastic liquid, with the increase of shear-stress, apparent viscosity can decline, what this was extruded by 2 layers of PE forcing machine for asphalt coating provides prerequisite, but in the viscosity flow state of 190 DEG C of (the melt index determination temperature of vinyon) petroleum pitch, melting index is greater than 25, the melting index of high density polyethylene(HDPE) 5000S is then about 1.5, like this, that will try one's best when extruding petroleum pitch chooses lower extrusion temperature, namely near softening temperature, pitch just can be avoided to trickle and to cause uneven thickness, but outer protective polyethylene layer extrusion temperature 200 degree, pitch post-heating can be made to trickle the uneven thickness caused, and double-layer structure shrinks inconsistent, and cause splitting.Therefore, need to carry out certain modification to asphalt coating, except the problem such as fragility solving petroleum pitch self, also need the high temperature viscosity improving petroleum pitch, to solve the phenomenon of preservative coat uneven thickness and the splitting caused due to pitch trickling.Thus need to carry out modification to petroleum pitch, existing plastics extruder can be adapted to and produce, and and there is between protective layer good ply adhesion.
Summary of the invention
The invention reside in and overcome Problems existing in background technology, and a kind of SBS modifying asphalt being applicable to the extrusion moulding of modified oil pitch preservative coat is provided.This is applicable to the SBS modifying asphalt of modified oil pitch preservative coat extrusion moulding, has the feature of anticorrosion waterproof, and modified petroleum pitch can adapt to existing plastics extruder and produce, and and has good ply adhesion between protective layer.
The present invention solves its problem and reaches by following technical scheme: a kind of SBS modifying asphalt being applicable to the extrusion moulding of modified oil pitch preservative coat, its component and proportioning are as follows by weight percentage: petroleum pitch: styrene-butadiene-styrene: high density polyethylene(HDPE)=100:6 ~ 9:5 ~ 10.
Described petroleum pitch is 10# petroleum pitch, and styrene-butadiene-styrene is SBS1401, and high density polyethylene(HDPE) is 5000S polyethylene.
A kind of petroleum pitch feedstock 10# building petroleum asphalt that the present invention selects pipeline corrosion protection conventional, add the styrene-butadiene-styrene block copolymer good with its mutual miscibility, simultaneously for a change modified oil pitch in extrusion process with the ply adhesion of protective polyethylene layer, add polyethylene raw material, utilize existing plastics extruder, through disperseing the modified oil pitch preservative coat of extrusion moulding.
The present invention can have following beneficial effect compared with above-mentioned background technology: this is applicable to the SBS modifying asphalt of modified oil pitch preservative coat extrusion moulding, modified oil pitch preservative coat can be made by plastics extruder direct extrusion molding, change the technique of the traditional flow coat showering of asphalt coating, improve production efficiency, reduce environmental pollution and HUMAN HEALTH infringement, simplify production process, reduce production cost, improve the use properties of asphalt coating simultaneously, comprise the high temperature performance of petroleum pitch, mechanical property and splitting performance, antiseptic property etc., significant economic benefit and social benefit can be brought.
Embodiment:
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1
Take 10# petroleum pitch 100Kg, properties-correcting agent SBS14016kg, properties-correcting agent polyethylene 5000S 10kg, mixing, is modified oil pitch preservative coat through screw extrusion press extrusion moulding.
Embodiment 2
Take 10# petroleum pitch 100Kg, SBS1401 properties-correcting agent 7kg, polyethylene 5000S properties-correcting agent 10kg, mixing, is modified oil pitch preservative coat through screw extrusion press extrusion moulding.
Embodiment 3
Take 10# petroleum pitch 100Kg, SBS1401 properties-correcting agent 8kg, polyethylene 5000S properties-correcting agent 10kg, mixing, is modified oil pitch preservative coat through screw extrusion press extrusion moulding.
Embodiment 4
Take 10# petroleum pitch 100Kg, SBS1401 properties-correcting agent 6kg, polyethylene 5000S properties-correcting agent 5kg, mixing, is modified oil pitch preservative coat through screw extrusion press extrusion moulding.
In above-described embodiment, 10# petroleum pitch is granular, and SBS1401 all adopts Sinopec Ba Ling petrochemical complex limited liability company product, the 5000S product that polyethylene adopts Daqing petrochemical company to produce.
By Indoor Evaluating Experimentation, the modified oil pitch formula of above-described embodiment is made sample, carry out laboratory evaluation, parameter and the index request of laboratory evaluation see the following form.
| Sequence number | Test index | Index request | Testing method |
| 1 | Softening temperature (DEG C) | ≥90 | GB/T4507 |
| 2 | Penetration degree (0.1mm) | ≤20 | GB/T4509 |
| 3 | Ductility (cm) | ≥3 | GB/T4508 |
| 4 | Melt flow rate (MFR) (190 degree, 5kg) g/10min | ≤10 | GB/T3682 |
| 5 | Stripping strength (N/cm) | ≥70 | GB/T23257-2009 annex J |
| 6 | Antikathode stripping performance (65 DEG C, 48h) mm | ≤25 | GB/T23257-2009 Appendix D |
By the shop experiment to 6 test items, all indexs of this modified oil pitch preservative coat can meet the demands.
Bilayer structure pitch-polyethylene anticorrosion pipe that application the present invention produces applies 20 kilometers in Daqing oil field six factories of recovering the oil, and application process is during 1 year in the protection effect of pipeline better, does not occur the Safety production questions caused because pipeline corrodes outward.This product is compared with traditional asphalt anti-corrosion pipeline, and antiseptic property is excellent, and polyethylene external protection coating is sturdy and durable, heat-resisting ageing-resisting, applied range, can the low lying areas application such as in marsh, protective conduit.Shiny appearance, similar to PE pipeline, tension resistance to compression, transportation, slightly collides with and does not affect outward appearance.Constant product quality, can substitute traditional asphalt pipe applications completely.
Claims (2)
1. be applicable to a SBS modifying asphalt for modified oil pitch preservative coat extrusion moulding, its component and proportioning are as follows by weight percentage: petroleum pitch: styrene-butadiene-styrene: high density polyethylene(HDPE) is 100:6 ~ 9:5 ~ 10.
2. a kind of SBS modifying asphalt being applicable to the extrusion moulding of modified oil pitch preservative coat according to claim 1, it is characterized in that: described petroleum pitch is 10# petroleum pitch, styrene-butadiene-styrene is SBS1401, and high density polyethylene(HDPE) is 5000S polyethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161821.8A CN104774478B (en) | 2015-04-07 | 2015-04-07 | A kind of SBS modified pitch suitable for modified oil pitch erosion resistant coating extrusion molding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510161821.8A CN104774478B (en) | 2015-04-07 | 2015-04-07 | A kind of SBS modified pitch suitable for modified oil pitch erosion resistant coating extrusion molding |
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| CN104774478A true CN104774478A (en) | 2015-07-15 |
| CN104774478B CN104774478B (en) | 2018-06-08 |
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| CN201510161821.8A Active CN104774478B (en) | 2015-04-07 | 2015-04-07 | A kind of SBS modified pitch suitable for modified oil pitch erosion resistant coating extrusion molding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559538A (en) * | 2017-09-29 | 2018-01-09 | 江苏天时新材料科技有限公司 | Double-decker anticorrosive coat |
| CN109825100A (en) * | 2019-02-23 | 2019-05-31 | 南京国路沥青有限公司 | SBS modified pitch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058412A (en) * | 1990-07-26 | 1992-02-05 | 中国石油天然气总公司管道局第二工程公司 | A kind of modifying asphalt and preparation method thereof |
| CN101125957A (en) * | 2007-08-16 | 2008-02-20 | 中国海洋石油总公司 | Method for preparing polymer modified asphalt |
| US20100196648A1 (en) * | 2009-01-30 | 2010-08-05 | Susnata Samanta | Waterproofing Membrane |
| CN104119686A (en) * | 2014-07-01 | 2014-10-29 | 孟鋆辉 | New steel pipeline anti-corrosion process adopting modified asphalt and polyethylene |
-
2015
- 2015-04-07 CN CN201510161821.8A patent/CN104774478B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058412A (en) * | 1990-07-26 | 1992-02-05 | 中国石油天然气总公司管道局第二工程公司 | A kind of modifying asphalt and preparation method thereof |
| CN101125957A (en) * | 2007-08-16 | 2008-02-20 | 中国海洋石油总公司 | Method for preparing polymer modified asphalt |
| US20100196648A1 (en) * | 2009-01-30 | 2010-08-05 | Susnata Samanta | Waterproofing Membrane |
| CN104119686A (en) * | 2014-07-01 | 2014-10-29 | 孟鋆辉 | New steel pipeline anti-corrosion process adopting modified asphalt and polyethylene |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559538A (en) * | 2017-09-29 | 2018-01-09 | 江苏天时新材料科技有限公司 | Double-decker anticorrosive coat |
| CN109825100A (en) * | 2019-02-23 | 2019-05-31 | 南京国路沥青有限公司 | SBS modified pitch |
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| Publication number | Publication date |
|---|---|
| CN104774478B (en) | 2018-06-08 |
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