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UHMWPE髋臼的厚度对摩擦磨损的影响研究UHMWPE髋臼的厚度对摩擦磨损的影响研究UHMWPE髋臼的厚度对摩擦磨损的影响研究
2022-07-08T14:07:35+00:00
Ultrahigh molecular weight polyethylene (UHMWPE) for
May 1, 2021 1 Introduction Since its introduction in 1962, ultrahigh molecular weight polyethylene (UHMWPE) remains the most commonly used bearing material in joint ABSTRACT Ultrahigh molecular weight polyethylene (UHMWPE) materials have played a significant role in the field of reconstructive surgery, particularly as acetabular Six decades of UHMWPE in reconstructive surgeryJul 1, 2017 Ultra high molecular weight polyethylene (UHMWPE) is a semicrystalline polymer that has been applied, as a bearing surface in total human joint replacements Advances in ultra high molecular weight polyethylene
Effects of UHMWPE viscoelasticity on the squeeze‐film
May 25, 2021 A typical 28 mm diameter hard on soft hip replacement, consisting of a metal or ceramic head and a UHMWPE liner, was considered The materials and geometrical May 16, 2014 Ultra high molecular weight polyethylene (UHMWPE) is a material commonly used in total hip and knee joint replacements Numerous studies have assessed the The Biomechanical Effect of Loading Speed on Metalon Jan 1, 2022 UHMWPE is a highly oriented thermoplastic fibre with a high crystalline structure and crystallinity of more than 90%, as well as good biocompatibility, chemical Mechanical and wear performances of UHMWPE
Update on UHMWPE research From the bench to the
Abstract Ultrahigh molecular weight polyethylene (UHMWPE) is the key material for achieving excellent longterm results in total joint arthroplasties Despite the fact that Feb 27, 2015 As the gold standard material for artificial joints, ultrahighmolecularweight polyethylene (UHMWPE) generates wear debris when the material is used in Wear Performance of UHMWPE and Reinforced UHMWPE 1 Introduction Since its introduction in 1962, ultrahigh molecular weight polyethylene (UHMWPE) remains the most commonly used bearing material in joint arthroplasties, Ultrahigh molecular weight polyethylene (UHMWPE) for
Chemically Cross‐Linked UHMWPE With Superior
Jun 17, 2019 Crosslinking is used to reduce the wear rate of ultrahighmolecularweight polyethylene (UHMWPE), 1 which is the preferred bearing surface used in total joint May 28, 2022 Ultrahigh molecular weight polyethylene (UHMWPE) and composites of such kind have been extensively used in medical implants, notably in the bearings of the hip, knee, and other joint prostheses, owing to its biocompatibility and high wear resistance For the Anterior Cruciate Ligament (ACL) graft, synthetic UHMWPE is an ideal candidate due Functional UltraHigh Molecular Weight Polyethylene Composites Jul 1, 2017 Abstract Ultra high molecular weight polyethylene (UHMWPE) is a semicrystalline polymer that has been applied, as a bearing surface in total human joint replacements and artificial bones UHMWPE has a superior wear resistance, lowfriction surface, biological inertness, high levels of strength, creep resistance and low friction Advances in ultra high molecular weight polyethylene PubMed
Characterization of Ultrahigh Molecular Weight Polyethylene
UHMWPE, we recommend you submit a PreSubmission to the appropriate review division to determine what level of characterization is needed for the UHMWPE materialDec 20, 2017 Ultrahigh molecular weight polyethylene (UHMWPE) is a unique thermoplastic polymer with excellent performances It has ultrahigh molecular weight and extreme rheological behaviour, which make it a worldwide challenge to process UHMWPE continuously with little or without processing aids Although the polymer processing Extrusion Processing of UltraHigh Molecular Weight Polyethylene二、UHMWPE纤维 UHMWPE 纤维是目前已工业化纤维材料中比强度和防弹性能最高的纤维。其纺丝工艺根据使用溶剂及脱除方式不同，可分为干法路线和湿法路线，目前国内外可生产不同旦数、纤维强度 17~43cN/dtex 的高、中、低端纤维产品。[行业前沿]超高分子量聚乙烯材料研究进展（上篇之UHMWPE树脂
Tensile properties of UHMWPE prepared by compression molding
Preparation and characterization of UHMWPE/HDPE/ MWCNT meltblended nanocomposites Abstract The nanocomposite blends of ultrahighmolecularweight polyethylene (UHMWPE) and highdensity PE (HDPE May 9, 2022 One of the greatest challenges in joint arthroplasty is to enhance the wear resistance of ultrahigh molecular weight polyethylene (UHMWPE), which is one of the most successful polymers as acetabular bearings for total hip joint prosthesis In order to improve UHMWPE wear rates, it is necessary to develop efficient methods to predict its wear Prediction of Wear Rates of UHMWPE Bearing in Hip Joint HindawiThe compression molded (95/5) UHMWPE/HDPE samples extruded using the tapered die yielded the highest tensile strength (501 MPa), which was about 40% higher than that of the neat UHMWPE samplesThermal properties of the UHMWPE/HDPE/PEG blends
UHMWPE Biomaterials Handbook Google Books
Apr 27, 2009 UHMWPE Biomaterials Handbook describes the science, development, properties and application of of ultrahigh molecular weight polyethylene (UHMWPE) used in artificial joints This material isApr 13, 2022 Ultrahigh molecular weight polyethylene (UHMWPE) has great potential in the field of waterlubricated bearings However, waterlubricated bearing made of pure UHMWPE produce significant heat and undergo physical damage under low speed and heavy load conditions These performance issues can be improved by reinforcement with An Investigation into Water Lubrication Performance of UHMWPE the UHMWPEcounterbearing interface by applying soft hydrophilic polymer coatings to the UHMWPE surface Pavoor et al17 dipcoated UHMWPE with polyelectrolyte multilayers (PEMs), which reduced the wear rate of the UHMWPE by forming a lubricious transfer film on the counterbearing Such a mechanism is unlikely to be effective in the body,Characterization and tribology of PEGlike coatings on
High Molecular Weight Polyethylene an overview ScienceDirect
Abstract Ultrahigh molecular weight polyethylene (UHMWPE) wear continues to be an important factor in the longterm survivability of orthopedic implants As established in Chapter 28, periprosthetic osteolysis occurs secondary to the generation of UHMWPE wear debris in total hip arthroplasty (THA) In the last decade, efforts have been made Características El UHMWPE es inodoro, insípido y no es tóxico [4] Incorpora todas las características del polietileno de alta densidad con las características añadidas de ser resistente a ácidos y álcalis concentrados, así como a numerosos disolventes orgánicos [5] Es muy resistente a los productos químicos corrosivos excepto a los ácidos oxidantes, Polietileno de ultra alto peso molecular Wikipedia, la Sep 5, 2016 We demonstrate a new kind of ultrahigh molecular weight polyethylene (UHMWPE)/woven fabric composite microporous membrane via a thermally induced phase separation (TIPS) method A dilute UHMWPE/liquid paraffin (LP) solution with a concentration lower than 8 wt% was used in the preparation of the composite membraneDevelopment and evaluation of UHMWPE/woven fabric
Functional UltraHigh Molecular Weight Polyethylene Composites
May 28, 2022 Ultrahigh molecular weight polyethylene (UHMWPE) and composites of such kind have been extensively used in medical implants, notably in the bearings of the hip, knee, and other joint prostheses, owing to its biocompatibility and high wear resistance For the Anterior Cruciate Ligament (ACL) graft, synthetic UHMWPE is an ideal candidate due Jul 1, 2017 Ultra high molecular weight polyethylene (UHMWPE) is a semicrystalline polymer that has been applied, as a bearing surface in total human joint replacements and artificial bones UHMWPE has a superior wear resistance, lowfriction surface, biological inertness, high levels of strength, creep resistance and low friction coefficientAdvances in ultra high molecular weight polyethylene PubMedDespite the recognized success and worldwide acceptance of total joint arthroplasty, wear is a major obstacle limiting the longevity of implanted UHMWPE components Efforts to solve the wear problem in UHMWPE have spurred numerous detailed studies into the structure, morphology, and mechanical prope Advances in the processing, sterilization, and crosslinking of ultra
Characterization of Ultrahigh Molecular Weight Polyethylene
UHMWPE, we recommend you submit a PreSubmission to the appropriate review division to determine what level of characterization is needed for the UHMWPE materialFor the crosslinked UHMWPE cup with relatively large diameters up to 48 mm and a fixed outside diameter of 50 mm, the predicted wear, which was found to increase with increasing femoral head radius, remained small owing to the small wear factor associated with these materials Furthermore, if the head diameter increases beyond 42 mm, a rapid A simple fully integrated contactcoupled wear prediction for ultra Radiation crosslinking decreases the wear of ultrahigh molecular weight polyethylene (UHMWPE) used in total joint implants and creates residual free radicals, which are the precursors of oxidative degradation It is desirable to obtain a simultaneously wear and oxidationresistant UHMWPE in order to prolong the longevity of implantsImproved oxidation and wear resistance of ultrahigh molecular
Extrusion Processing of UltraHigh Molecular Weight Polyethylene
Dec 20, 2017 Ultrahigh molecular weight polyethylene (UHMWPE) is a unique thermoplastic polymer with excellent performances It has ultrahigh molecular weight and extreme rheological behaviour, which make it a worldwide challenge to process UHMWPE continuously with little or without processing aids Although the polymer processing 有研究表明，UHMWPE的固含量影响微孔的结构和孔隙率，进而影响离子的渗透性；淬火温度影响UHMWPE/石蜡油体系相分离机理和孔结构，较高淬火温度对应的是液液相分离，形成花边状多孔结构，而较低淬火温度对应的是结晶诱导相分离，形成树叶状多孔结构。 此外，对于UHMWPE/环烷油的体系，二氧化硅引入后有助于提高UHMWPE基体含油率，从 [行业前沿]超高分子量聚乙烯材料研究进展（上篇之UHMWPE树脂 Jan 27, 2021 Tensile strength was however reduced by almost half Ethanol mixed sample without CNF (EMUHMWPE/0) on the other hand showed slight decrement in all mechanical properties tested At 05% CNF inclusion, the mechanical properties of meltblended bionanocomposites (MBUHMWPE/05) were improved as compared to NeatUHMWPEMelt vs NonMelt Blending of Complexly Processable UltraHigh
Tensile properties of UHMWPE prepared by compression molding
Ultrahigh molecular weight polyethylene (UHMWPE) are widely used as a biomaterial for manufacturing of prostheses, implants and other biomedical components with complex geometry and shapesWe found that 03wt% vitamin Eblended UHMWPE could not be crosslinked above a crosslink density achieved at a radiation dose of 65kGy for virgin UHMWPE and 10wt% vitamin Eblended UHMWPE could not be crosslinked above a crosslink density achieved at a radiation dose of 25kGy for virgin UHMWPE even when the these UHMWPEs were The effects of high dose irradiation on the crosslinking of vitamin May 9, 2022 One of the greatest challenges in joint arthroplasty is to enhance the wear resistance of ultrahigh molecular weight polyethylene (UHMWPE), which is one of the most successful polymers as acetabular bearings for total hip joint prosthesis In order to improve UHMWPE wear rates, it is necessary to develop efficient methods to predict its wear Prediction of Wear Rates of UHMWPE Bearing in Hip Joint Hindawi
Thermal properties of the UHMWPE/HDPE/PEG blends
Ultrahigh molecular weight polypropylene (UHMWPP), with a molecular weight of more than 10⁶ g/mol, is expected to have superior properties, such as high mechanical strength, high thermalApr 13, 2022 Ultrahigh molecular weight polyethylene (UHMWPE) has great potential in the field of waterlubricated bearings However, waterlubricated bearing made of pure UHMWPE produce significant heat and undergo physical damage under low speed and heavy load conditions These performance issues can be improved by reinforcement with An Investigation into Water Lubrication Performance of UHMWPE