自制可塑性光固化纤维增强树脂根管钉的机械性能研究  

Study on Mechanical Properties of Self-made Light-curable Plastic FRC Post

作　　者：刘玉红[1] 高菊荣[1] 宋扬[1] 

机构地区：[1]解放军三二三医院口腔科,陕西西安710054

出　　处：《中国美容医学》2017年第8期73-76,共4页Chinese Journal of Aesthetic Medicine

摘　　要：目的:采用不同含量的玻璃纤维来增强树脂根管钉基体,筛选出能够形成较为理想的互穿聚合物网络结构的树脂基体配比方案,通过合成材料的力学性能测试,确定其含量配方。方法:制备双酚A双甲基丙烯酸缩水甘油酯(Bisphenol A glycidyl methacrylate,Bis-GMA)和甲基丙烯酸甲酯(Methyl methacrylate,MMA)聚合物互穿网络结构,进行玻璃化转变温度测定以及弯曲性能测试,检测不同纤维含量对玻璃纤维增强树脂基复合材料机械性能的影响。结果:MMA的加入使材料的力学性能有所提高,当MMA的含量为20%时,材料的弯曲强度和弯曲模量提高最大。树脂丙酮比为1︰1.4,其纤维含量为75.3%,试件的三点弯曲强度达到最大值,其弯曲模量也更接近于牙本质。结论:Bis-GMA和MMA在一定工艺条件下可以形成IPN结构,并且在MMA含量为20%时,其IPN结构最佳,其弯曲强度和弯曲模量也达到最大值。Objective Using different content of fiber reinforced composites（FRC） to enhance the resin matrix to select the ideal interpenetrating polymer network structure resin matrix matching scheme, the content formula was determined by testing the mechanical properties of the composites. Methods Bis-GMA/MMA interpenetrating polymer network（IPN） was prepared, glass transition temperature was measured and bending performance was measured. Results The mechanical properties of the material increased with the addition of MMA, When the content of MMA is 20%, the flexural strength and flexural modulus of the material increase the maximum, and the bending strength of the sample reached the maximum value when the resin acetone ratio was 1：1.4, the fiber content was up to 75.3% and its bending modulus is closer to dentin. Conclusion Bis-GMA and MMA can form IPN structure under certain process conditions, when the content of MMA is 20%, the IPN structure is the best, and the bending strength and bending modulus also reach the maximum value.

关 键 词：纤维增强树脂基复合材料 互穿聚合物网络 根管桩钉 弹性模量 

分 类 号：V258[一般工业技术—材料科学与工程]