首页> 外文期刊>Journal of Applied Polymer Science >EFFECTS OF SIMULATED CLINICAL FABRICATION HEAT TREATMENT AND ARTIFICIAL WEATHERING ON THE TENSILE TESTING OF PROSTHETICS ORTHOTICS POLYMERS
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EFFECTS OF SIMULATED CLINICAL FABRICATION HEAT TREATMENT AND ARTIFICIAL WEATHERING ON THE TENSILE TESTING OF PROSTHETICS ORTHOTICS POLYMERS

机译:模拟的临床热处理和人工气候对假体,矫形聚合物的拉伸测试的影响

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摘要

The tensile behavior was compared for five prosthetics/orthotics polymers: Durr-Plex (co-polyester), Polypropylene (polypropylene), Subortholen (polyethylene), Surlyn (ionomer), and Uvex (and cellulose acetate butyrate). Tensile properties, yield strength, and modulus of elasticity are related to a number of factors including composition and condition of polymers. The polymers were examined in the as-received and simulated clinical fabrication heat-treated conditions. The simulated clinical fabrication heat-treated specimens were subsequently treated to 2 weeks, 4 weeks, and 8 weeks of artificial weathering conditions, consisting of exposure to cycles of ultraviolet light and heated condensation. Tensile testing was performed on an Instron mechanical testing system, until fracture occurred. The ranges and respective rankings of yield strength and modulus of elasticity in tension were determined. Analysis of Variance (ANOVA) and post hoc Scheffe statistical analyses were performed for different polymers of the same treatment condition, and different treatment conditions of the same polymer. The analysis of variance (ANOVA) showed significant yield strength and modulus differences for the five polymers. The choice of material significantly influences the tensile properties for prosthetics/orthotics polymers. The Uvex polymer had the highest yield strength and elastic modulus, and the Surlyn polymer had the lowest yield strength and elastic modulus. The ranking trend was Uvex > Durr-Plex > polypropylene > Subortholen > Surlyn. (C) 1996 John Wiley & Sons, Inc. [References: 30]
机译:比较了五种修复/矫形聚合物的拉伸性能:Durr-Plex(共聚酯),聚丙烯(聚丙烯),Subortholen(聚乙烯),Surlyn(离聚物)和Uvex(和乙酸丁酸纤维素)。拉伸性能,屈服强度和弹性模量与许多因素有关,包括聚合物的组成和条件。在按原样和模拟的临床制造热处理条件下检查聚合物。随后将模拟的临床加工热处理标本置于2周,4周和8周的人工风化条件下进行处理,包括暴露于紫外线和热凝结的循环中。在Instron机械测试系统上进行拉伸测试,直到发生断裂。确定屈服强度和拉伸弹性模量的范围和各个等级。对具有相同处理条件的不同聚合物以及相同聚合物的不同处理条件进行了方差分析(ANOVA)和事后事后统计分析。方差分析(ANOVA)显示了五种聚合物的明显的屈服强度和模量差异。材料的选择会显着影响假肢/矫形聚合物的拉伸性能。 Uvex聚合物具有最高的屈服强度和弹性模量,而Surlyn聚合物具有最低的屈服强度和弹性模量。排名趋势是Uvex> Durr-Plex>聚丙烯> Subortholen> Surlyn。 (C)1996 John Wiley&Sons,Inc. [参考:30]

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