CN1252168C - Method for modifying rheological performance of ultrahigh molecular weight polyethylene processing - Google Patents
Method for modifying rheological performance of ultrahigh molecular weight polyethylene processing Download PDFInfo
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- CN1252168C CN1252168C CN 03156222 CN03156222A CN1252168C CN 1252168 C CN1252168 C CN 1252168C CN 03156222 CN03156222 CN 03156222 CN 03156222 A CN03156222 A CN 03156222A CN 1252168 C CN1252168 C CN 1252168C
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- China
- Prior art keywords
- molecular weight
- weight polyethylene
- ultrahigh molecular
- uhmwpe
- processing
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 title abstract description 11
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 title abstract description 11
- 229920006149 polyester-amide block copolymer Polymers 0.000 claims abstract description 11
- 229920010741 Ultra High Molecular Weight Polyethylene (UHMWPE) Polymers 0.000 claims description 21
- 229920000587 hyperbranched polymer Polymers 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 abstract description 5
- 239000000155 melt Substances 0.000 abstract description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000004927 fusion Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 241000446313 Lamella Species 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000003484 crystal nucleating agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lubricants (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention discloses a novel method for improving processing rheological property of ultrahigh molecular weight polyethylene. The processing rheological property of the ultrahigh molecular weight polyethylene can be obviously improved after a small amount of hyper branched polyester-amide polymers are added into the ultrahigh molecular weight polyethylene and homogeneously mixed on a torque rheometer, and the melt viscosity of high molecular weight can be obviously reduced. The present invention has good application prospects in the processing field of the ultrahigh molecular weight polyethylene.
Description
Technical field
The invention belongs to the composite polyethylene material processing technique field, particularly a kind of novel method of improving the ultrahigh molecular weight polyethylene(UHMWPE) processing rheological property.
Background technology
Hyperbranched polymer has lower melt viscosity, and it is having very big using value aspect the modification of traditional polymer rheological behaviour.Report that in U.S. Pat 4487875 multipolymers cooperate the lubricant as ultrahigh molecular weight polyethylene(UHMWPE) (UHMW-PE) with stearate, can significantly improve the processing characteristics of UHMWPE, it can be processed on common single screw extrusion machine or injector.People such as Zhao Anchi have reported employing liquid crystal (LCP) modification UHMWPE in " the plastics science and technology " of 1997 the 6th phases, obtained breakthrough in the modification field of UHMWPE.Chinese Academy of Sciences's chemistry has worked out uses the silicate modified UHMWPE of nano level stratiform.Between their lamella bonding force relatively a little less than, frictional coefficient is very little, utilizes the relatively sliding between the lamella can improve the flowability of UHMWPE melt, thereby improves its processing characteristics; And lamella compact internal structure, rigidity are very high, and the performance to UHMWPE on two-dimensional directional has certain enhancement.When adding hyperbranched polyphenyl 5% in polystyrene, blend can reduce to original 80% at 120 ℃ melt viscosity.
UHMW-PE is a kind of thermoplastic engineering plastic of excellent combination property.Because of it has outstanding wear resistance (than wear-resisting 8～9 times of iron and steel), excellent shock-resistant (be 2 times of polycarbonate, 5 times of ABS, 15 times of polyoxymethylene), frictional coefficient is low, and (its kinetic friction coefficient is 0.10～0.22, can compare favourably with tetrafluoroethylene, be the ideal lubricant), chemical proofing, advantage such as lower temperature resistance and noise reduction, the three-dimensional molecular structure of the uniqueness of hyperbranched polymer makes it have low viscosity, high reaction activity and good premium propertiess such as intermiscibility, the end group of numerous correctabilities makes hyperbranched polymer have broad application prospects in paint field.So hyperbranched polymer might replace branch-shape polymer fully, mix the aspect developings such as constitution controller, functional film material, self-assembly of thing at coating, tackiness agent, medicinal slow release agent, polymer catalyst, consisting of phase-transferring agent, crystal nucleating agent, organic-inorganic and use.Thereby worldwide extremely people's favor.Its total quantity consumed keeps the impetus of sustainable growth always.Before the eighties, world's average growth rate is 8.5%, enters after the eighties, and rate of increase is up to 16%, nineteen ninety the world consumption total amount reach 50,000 tons.
But since ultrahigh molecular weight polyethylene(UHMWPE) to add the melt viscosity in man-hour high, up to 108Pas, mobile extreme difference, its melt flow index is almost nil, so be difficult to directly to extrude or injection molding, adopting the working method of common thermoplastics just can process UHMW-PE is the scientific research task of assaulting fortified position unexpectedly mutually in countries in the world.
Summary of the invention
The purpose of this invention is to provide a kind of novel method of improving the ultrahigh molecular weight polyethylene(UHMWPE) processing rheological property, it is characterized in that: with molecular weight is that 1,000,000-3,000,000 ultrahigh molecular weight polyethylene(UHMWPE) and weight ratio 1%-10% polyester-amides hyperbranched polymer manually stirred 5 minutes, mixing even on Haake Rheomix 600 torque rheometers, melting temperature is 180-280 ℃, rotating speed is under 5-60 rev/min the condition, mixing 5-50 minute, the record moment of torsion in time delta data to vary stable.
The invention has the beneficial effects as follows by adding a spot of hyper-branched polyester-amide polymer, can significantly improve the processing rheological property of ultrahigh molecular weight polyethylene(UHMWPE).Can significantly reduce the melt viscosity of ultra-high molecular weight.
Embodiment
The present invention is a kind of novel method of improving the ultrahigh molecular weight polyethylene(UHMWPE) processing rheological property.It is characterized in that: with molecular weight is that 1,000,000-3,000,000 ultrahigh molecular weight polyethylene(UHMWPE)s and weight ratio 1%-10% polyester-amides hyperbranched polymer manually stirred 5 minutes, mixing even on Haake Rheomix 600 torque rheometers, melting temperature is 180-280 ℃, rotating speed is under 5-60 rev/min the condition, mixing 5-50 minute, the record moment of torsion in time delta data to vary stable.
Embodiment:
1. molecular weight is 50 parts of 2,000,000 ultrahigh molecular weight polyethylene(UHMWPE)s, and 1 part of polyester-amides hyperbranched polymer mixes under the normal temperature, and on Haake Rheomix 600 torque rheometers, rotating speed is 30 rev/mins of mixing 15-30 minutes, and record data are to vary stable
2. polyester-amides hyperbranched polymer umber changes 2 parts into, and other is the same.
3. polyester-amides hyperbranched polymer umber changes 3 parts into, and other is the same.
4. polyester-amides hyperbranched polymer umber changes 5 parts into, and other is the same.
5. the molecular weight of ultrahigh molecular weight polyethylene(UHMWPE) changes 3,000,000 among the embodiment 1, and polyester-amides hyperbranched polymer umber changes 3 parts into, and other are the same
6. the poly molecular weight of superelevation changes 3,000,000 among the embodiment 1, and polyester-amides hyperbranched polymer umber changes 5 parts into, and other is the same.
Comparative example:
1. among the embodiment 1, adopt molecular weight be 2,000,000 ultrahigh molecular weight polyethylene(UHMWPE), directly record its fusion moment of torsion with HaakeRheomix 600 torque rheometers, other is identical.
2. among the embodiment 1, adopt molecular weight be 3,000,000 ultrahigh molecular weight polyethylene(UHMWPE), directly record its fusion moment of torsion with HaakeRheomix 600 torque rheometers, other is identical.
More than each example as shown in the table by the torque value that Haake Rheomix 600 torque rheometers record.
PF
2Influence to the rheology moment of torsion of ultrahigh molecular weight polyethylene(UHMWPE)
| Embodiment | PF 2Addition (wt%) | Blend melt moment of torsion (Nm) | Torque value reduces degree (%) |
| Comparative example 1 embodiment 1 embodiment 2 embodiment 3 embodiment 4 comparative examples 2 embodiment 5 embodiment 6 | 0 1 2 3 5 0 3 5 | 40 28 24 6 4 53 48 25 | 0 30 40 85 90 0 9 53 |
The comparative example can find, ultrahigh molecular weight polyethylene(UHMWPE) by modification all decreases by the fusion moment of torsion that Haake Rheomix600 torque rheometer records, when this property hyperbranched polymer content that adds 3% the time, the fusion moment of torsion that can fall pure ultrahigh molecular weight polyethylene(UHMWPE) reduces by 85% (2,000,000 grades) and 53% (3,000,000 grades), and modified effect is obvious.
Claims (1)
1.-plant the novel method of improving the ultrahigh molecular weight polyethylene(UHMWPE) processing rheological property, it is characterized in that: with molecular weight is that 1,000,000-3,000,000 ultrahigh molecular weight polyethylene(UHMWPE) and weight ratio 1%-10% polyester-amides hyperbranched polymer manually stirred 5 minutes, mixing even on Haake Rheomix 600 torque rheometers, melting temperature is 180-280 ℃, rotating speed is under 5-60 rev/min the condition, mixing 5-50 minute, the record moment of torsion in time delta data to vary stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156222 CN1252168C (en) | 2003-09-05 | 2003-09-05 | Method for modifying rheological performance of ultrahigh molecular weight polyethylene processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03156222 CN1252168C (en) | 2003-09-05 | 2003-09-05 | Method for modifying rheological performance of ultrahigh molecular weight polyethylene processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1488668A CN1488668A (en) | 2004-04-14 |
| CN1252168C true CN1252168C (en) | 2006-04-19 |
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| CN 03156222 Expired - Fee Related CN1252168C (en) | 2003-09-05 | 2003-09-05 | Method for modifying rheological performance of ultrahigh molecular weight polyethylene processing |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112014004831B1 (en) * | 2011-08-30 | 2021-08-03 | Chevron Phillips Chemical Company Lp | ISOLATED TOPOLOGICAL VARIATION POLYETHYLENE HOMOPOLYMER AND METHOD OF DOING THE SAME |
| CN103468011B (en) * | 2013-09-30 | 2015-11-11 | 张燕军 | Modifying asphalt anti-rutting additive and preparation method thereof |
| CN106189223A (en) * | 2016-08-18 | 2016-12-07 | 威海晨源分子新材料有限公司 | A kind of high stream nylon based on hyperbranched poly (esteramides) and preparation method thereof |
| CN108794847A (en) * | 2017-04-28 | 2018-11-13 | 中国石油化工股份有限公司 | Rotational moulding polyolefin composition and preparation method thereof |
| CN114516983A (en) * | 2022-02-24 | 2022-05-20 | 深圳市巍特环境科技股份有限公司 | Ultra-high molecular weight polyethylene composition and preparation method thereof |
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