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首页> 外文期刊>Journal of oral rehabilitation >The effect of the addition of poly(methyl methacrylate) fibres on some properties of high strength heat-cured acrylic resin denture base material.
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The effect of the addition of poly(methyl methacrylate) fibres on some properties of high strength heat-cured acrylic resin denture base material.

机译：添加聚甲基丙烯酸甲酯纤维对高强度热固化丙烯酸树脂假牙基体材料某些性能的影响。

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摘要

The self-reinforcement of acrylic resin with butadiene styrene surface treated poly(methyl methacrylate) fibres has been reported to have the potential to substantially improve the transverse bend strength of conventional heat-cured acrylic resin. The aim of this study was to investigate the effect of the addition of butadiene styrene surface treated poly(methyl methacrylate) fibres in cross-ply arrangement to high impact acrylic resin on the transverse and impact strength. Specimens were prepared as specified in the International Standard Organization and British Standards for the Testing of Denture Base Resins (ISO 1567, 1988; BS 2487, 1989) and the British Standard Specification for Orthodontic resins (BS 6747, 1987) for transverse bend and impact testing. The impact strength was measured using a Zwick pendulum impact tester and the transverse bend strength measured using a Lloyds Instruments testing machine. The results showed that the impact strength was not improved with the addition of fibres, high impact acrylic resin with fibres (LF) 11.1 kJ m-2 and high impact acrylic resin (L) (12.5 kJ m-2). The modulus of rupture was decreased with the addition of fibres (57.8 MPa) for (LF) compared with (60.4 MPa) for (L). The modulus of elasticity was also reduced with the addition of fibres (1834.9 MPa) (LF) and 2086.2 MPa (L) as was the peak load (LF) (50.8 N) and (L) (55.8 N). It was concluded that the addition of surface treated poly(methyl methacrylate) fibres in cross-ply arrangement to high strength acrylic resin did not produce an improvement in the impact or transverse strength and cannot be recommended as a method of reinforcement.
机译：据报道，用丁二烯苯乙烯表面处理过的聚（甲基丙烯酸甲酯）纤维对丙烯酸类树脂进行自增强，具有显着改善常规热固化丙烯酸类树脂的横向弯曲强度的潜力。这项研究的目的是研究将丁二烯苯乙烯表面处理过的聚甲基丙烯酸甲酯纤维以交叉排列的方式添加到高抗冲丙烯酸树脂中对横向和冲击强度的影响。按照国际标准组织和英国义齿基托树脂测试标准（ISO 1567，1988; BS 2487，1989）和英国正畸树脂英国标准规范（BS 6747，1987）的规定制备试样，以进行横向弯曲和冲击测试。使用Zwick摆式冲击测试仪测量冲击强度，并且使用Lloyds Instruments测试机测量横向弯曲强度。结果表明，添加纤维，高抗冲丙烯酸树脂纤维（LF）11.1 kJ m-2和高抗冲丙烯酸树脂（L）（12.5 kJ m-2）不会提高抗冲击强度。与（L）相比，添加纤维（LF）的断裂模量降低（57.8 MPa），而（L）则降低（60.4 MPa）。弹性模量还通过添加纤维（1834.9 MPa）（LF）和2086.2 MPa（L）而降低，峰值载荷（LF）（50.8 N）和（L）（55.8 N）也是如此。得出的结论是，以交叉层的形式将表面处理的聚甲基丙烯酸甲酯纤维添加到高强度丙烯酸树脂中并没有改善冲击强度或横向强度，因此不推荐用作增强方法。

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