华西口腔医学杂志

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聚乙烯纤维加强聚甲基丙烯酸甲酯的机械性能测试

王志刚,莫三心,吉雅丽,张秋霞,宋忠臣   

  1. 郑州大学口腔医院 修复科,河南 郑州450052
  • 收稿日期:2004-02-25 修回日期:2004-02-25 出版日期:2004-02-20 发布日期:2004-02-20
  • 通讯作者: 王志刚,Tel:0371-6993400
  • 作者简介:王志刚(1974-),男,河南人,医师,硕士

Mechanical Property Analysis of Polyethylene Fiber Reinforced Polymethyl Methacylate

WANG Zhi-gang,MO San-xin, JI Ya-li,ZHANG Qiu-xia,SONG Zhong-cheng   

  1. Dept.of Prosthodontics,Stomatological School of Zhengzhou University, Zhengzhou450052,China
  • Received:2004-02-25 Revised:2004-02-25 Online:2004-02-20 Published:2004-02-20

摘要:

目的 观察聚乙烯纤维对聚甲基丙烯酸甲酯是否有加强作用。方法 采用自制模具,制作化学固化聚甲基丙烯酸甲酯(PMMA)组、化学固化PMMA加0·25 mm结扎丝组、化学固化PMMA加Ribbond聚乙烯纤维组3组试样,共28个。用万能材料实验机进行三点弯曲实验,记录试样的弯曲强度和弹性模量值,并进行统计分析。结果 化学固化PMMA组的弯曲强度为(51·383±2·761)MPa,弹性模量为(179 1·2±113·760)MPa。化学固化PMMA加 0·25 mm结扎丝组的弯曲强度为(58·725±1·218)MPa,弹性模量为(209 2·76±120·280)MPa。Ribbond聚乙烯纤维加强组的弯曲强度为(80·975±2·580)MPa,弹性模量为(286 6·53±107·510)MPa。经单因素方差分析各组之间皆有显著性差异(P<0·001)。Newman-Keuls法检测各组之间均有显著性差异(P<0·05)。结论 Ribbond聚乙烯纤维加强能显著提高聚甲基丙烯酸甲酯的弯曲强度和弹性模量。

关键词: 纤维加强树脂基复合材料, 三点弯曲实验, 聚乙烯纤维, 树脂

Abstract:

Objective To investigate if the Ribbond polyethylene fiber has the effect of reinforcing polymethyl methacylate. Methods 28 specimens were fabricated and divided into 3 groups : group of chemical-cured PMMA, group of chemical-cured PMMA reinforced by stainless steel wire and group of chemical-cured PMMA reinforced by Ribbond polyethylene fiber. A three- point bending test was used to measure the flexural strength and flexural modulus of specimens. Then the data were analyzed with a one-way analysis of variance.Results The flexural strength of chemical-cured PMMA group was (51·383±2·761) MPa,the flexuralmodulus was (179 1·2±113·760) MPa; The flexural strength of stainless steel wire reinforced group was (58·725± 1·218) MPa, the flexural modulus was (209 2·76±120·28) MPa; The flexural strength of Ribbond polyethylene fiber reinforced group was (80·975±2·58) MPa,the flexural modulus was (286 6·53±107·51) MPa。The one-way analysis of variance showed that the resultswere significant (P<0·001). Newman-Keulsmethod showed thatthe differences among all groupswere significant (P<0·05).Conclusion The Ribbond polyethylene fiber can raise the flexural strength and flexural modulu of polymethyl methacylate.

Key words: fiber-reinforced composite material, 3-point bending test, polyethylene fiber, resin