一种正畸用复合材料的制备及其力学性能评价

发布时间：2018-03-25 03:28

本文选题：形状记忆聚氨酯　切入点：玻璃纤维　出处：《浙江工业大学学报》2017年04期

【摘要】：具有形状记忆功能的高分子材料(SMPs,Shape memory ploymers)可应用于口腔正畸,但是其弹性模量比较低,形状回复力比较小.为了提高PU材料在口腔正畸中的应用可行性,以聚氨酯为基体,短切玻璃纤维为增强填料,探究具有不同质量分数的玻璃纤维增强聚氨酯(GFRPU)复合材料的制作工艺并制备出长方体状样条,通过静态拉伸实验测试、差示扫描量热仪(DSC,Differential scanning calorimeter)测试和扫描电镜(SEM,Scanning electron microscope)观察,从弹性模量、玻璃化转变温度和微观断口形貌三个方面评估GFRPU复合材料用于正畸治疗的可行性.研究结果表明:温度为36℃,玻纤质量分数为35%时,GFRPU复合材料与纯PU材料相比,其弹性模量提高了218%~546%,力学性能有较大改善,其应用于口腔正畸的可能性明显提高.
[Abstract]:The polymer material with shape memory function (SMPs, Shape memory Ploymers) can be used in orthodontics, but its elastic modulus is relatively low, shape recovery stress is relatively small. In order to improve the feasibility of application of PU material in orthodontic treatment, using polyurethane as matrix, chopped glass fiber as reinforcing fillers with different mass fraction of inquiry the glass fiber reinforced polyurethane (GFRPU) composite material production process and preparation of rectangular spline, through static tensile testing, differential scanning calorimeter (DSC Differential, scanning calorimeter test and scanning electron microscopy (SEM), Scanning electron microscope) from observation, elastic modulus, glass transition temperature and the micro fracture morphology of three aspects of evaluation of GFRPU composite materials for the feasibility of orthodontic treatment. The results show that: the temperature of 36 DEG, the mass fraction of glass fiber was 35%, and the GFRPU composite material Compared with pure PU, the modulus of elasticity is increased by 218%~546%, and the mechanical properties are greatly improved, and the possibility of its application to orthodontic is obviously improved.

【作者单位】：浙江工业大学特种装备制造与先进加工技术教育部重点实验室;浙江工业大学材料科学与工程学院;
【分类号】：R783.1

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