玻璃纤维增强聚酰胺树脂抗弯性能评价及动态力学分析。

IF 0.9 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Senem Unver, Arzu Zeynep Yildirim
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引用次数: 0

摘要

目的:研究热聚合聚甲基丙烯酸甲酯树脂、聚酰胺树脂和玻璃纤维增强聚酰胺树脂的抗弯强度、弹性模量和动态力学分析(DMA)。材料与方法:根据义齿基托材料分为聚甲基丙烯酸甲酯树脂(H)、聚酰胺树脂(P)和玻璃纤维增强聚酰胺树脂(R)三组。每种义齿基托材料制备16个样品,尺寸为64x10x3.3 mm,进行三点弯曲试验。每个义齿基托材料制备2个样品,尺寸为30x10x3 mm。根据制造商的建议制备聚甲基丙烯酸甲酯和聚酰胺样品。将硅烷涂于长度为4.5 mm、重量为2%的聚酰胺树脂玻璃纤维中,置于聚酰胺树脂软骨中注射到模具中。每种材料的一半试样(n=8)采用热时效程序。试件的抗弯强度和弹性模量采用5 mm/ min的三点弯曲试验,每组取1个试件进行DMA,评估粘弹性。数据分析采用单因素方差分析、Tukey检验和配对t检验。结果:两组义齿基托材料抗弯强度和弹性模量差异有统计学意义(p=0.00)。聚甲基丙烯酸甲酯组的抗弯强度和弹性模量最高。聚酰胺组与玻璃纤维增强聚酰胺组间差异无统计学意义(p=0.497)。三种基材在老化处理前后均无显著差异。结论:玻璃纤维增强对聚酰胺树脂的抗弯强度和弹性模量没有影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Evaluation of flexural properties and dynamic mechanical analysis of glass fiber-reinforced polyamide resin.

Evaluation of flexural properties and dynamic mechanical analysis of glass fiber-reinforced polyamide resin.

Evaluation of flexural properties and dynamic mechanical analysis of glass fiber-reinforced polyamide resin.

Evaluation of flexural properties and dynamic mechanical analysis of glass fiber-reinforced polyamide resin.

Purpose: The aim of this study was to evaluate flexural strength, elastic modulus and dynamic mechanical analysis (DMA) of heat-polymerized polymethyl methacrylate resin, polyamide resin and glass fiber-reinforced polyamide resin.

Materials and methods: Three groups were determined according to denture base materials as polymethyl methacrylate resin (H), polyamide resin (P) and glass fiber reinforced polyamide resin (R). Sixteen specimens for each denture base material were prepared with dimensions of 64x10x3.3 mm for three-point bending test. Two specimens for each denture base material were prepared with dimensions of 30x10x3 mm for DMA. Polymethyl methacrylate and polyamide specimens were prepared according to the manufacturer's recommendations. The silane was applied to glass fibers (4.5 mm length) 2% by weight of the polyamide resin, they were placed in polyamide resin cartilages and injected to the mold. The thermal aging procedure was applied to half of specimens of each material (n=8). Flexural strength and elastic modulus of the specimens were determined by three-point bending test at a speed of 5 mm/ min. DMA was performed to 1 specimen from each group to evaluate viscoelastic properties. Data were analyzed with one-way ANOVA, Tukey and Paired t tests.

Results: A statistically significant difference was found in flexural strength and elastic modulus values of denture base materials (p=0.00). The highest flexural strength and elastic modulus values were observed in polymethyl methacrylate group. There was no significant difference between polyamide and glass-fiber reinforced polyamide groups (p=0.497). No significant difference was determined in all threedenture base materials before and after aging procedure.

Conclusion: The reinforcement with glass-fibers did not affect the flexural strength and elastic modulus of polyamide resin.

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来源期刊
European Oral Research
European Oral Research DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
1.60
自引率
0.00%
发文量
23
审稿时长
12 weeks
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