聚硅氧烷口腔印模材料的研制与性能  

Preparation and Properties of Oral Impression Material Based on Polysiloxane

作　　者：张亮[1] 马锋[2,3,4] 邵雯 李帅帅 ZHANG Liang;MA Feng;SHAO Wen;LI Shuaishuai(Department of Bidding and Purchase-Supply,the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an Shaanxi 710061, China;Surgery Dreamworks,the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an Shaanxi 710061, China;Department of State-Owned Property Management, the First Affiliated Hospital of Xi’an Jiaotong University, Xi’an Shaanxi 710061, China;Regenerative Medicine and Surgery Engineering Research Center of Shaanxi Province, Xi’an Shaanxi 710061, China;Research Institute of Advanced Surgical Techniques and Engineering, Xi’an Jiaotong University, Xi’an Shaanxi 710061, China;Department of Medical Consumables, Shaanxi Provincial People’s Hospital, Xi’an Shaanxi 710068, China)

机构地区：[1]西安交通大学第一附属医院招标采供办公室,陕西西安710068 [2]西安交通大学第一附属医院外科梦工场,陕西西安710068 [3]陕西省再生医学与外科工程研究中心,陕西西安710061 [4]西安交通大学先进外科技术与工程研究所,陕西西安710061 [5]西安交通大学第一附属医院国有资产管理办公室,陕西西安710068 [6]陕西省人民医院耗材试剂部,陕西西安710068

出　　处：《中国医疗设备》2017年第10期27-29,共3页China Medical Devices

基　　金：陕西省教育厅科研计划项目资助项目(2013JK0920)

摘　　要：本研究拟采用α、ω-二羟基聚二甲基硅氧烷为基体、正硅酸乙酯作为交联剂、二月桂酸二丁基锡为催化剂,添加补强填料白炭黑、增容填料轻质碳酸钙、增塑剂液体石蜡,优化工艺配方,制备成本较低而且易于普及聚硅氧烷口腔印模材料。最终制备的材料通过成型收缩率测定材料的印模精度,交联反应速率表征材料的定型时间,拉伸测试和撕裂强度试验评定材料的的力学性能。结果表明,当基体为100 g,交联剂为6 m L,催化剂为7 m L,补强填料16 g,增容填料为56 g,增塑剂为30 m L时材料的定型时间适宜、印模精度和力学性能最为优异,其定型时间为10 min,尺寸收缩率<0.79%,拉伸强度为1.19 k Pa,断裂伸长率为24%,撕裂强度为3.87 k N/m,且脱模性良好。The present study aimed to prepare oral impression material based on polysiloxane via optimized process and formulation,usingα,ω-dihydroxy polydimethylsiloxane as matrix,tetraethyl orthosilicate as cross-link agent,dibutyltin dilaurate as catalyst,fumed silica as reinforcing filler,precipitated calcium carbonate as compatibilizer fillers,liquid paraffin as plasticizer.This kindof oral impression material was of low preparation cost and easy to be popularized.Impression accuracy was analyzed by moldingshrinkage.Curing time was confirmed by the velocity of cross-linking.Mechanical properties were characterized by tensile strengthand tear strength.The results showed that curing time,impression accuracy and mechanical properties were optimum with100gpolysiloxane,6mL cross-linking agent,7mL catalyst,16g reinforcing filler,56g compatibilizer fillers,and30mL plasticizerrespectively.Curing time was10minutes and molding shrinkage was below0.79%.Tensile strength,elongation at break and tearingstrength of oral impression material were1.19kPa,24%and3.87kN/m respectively,and the demould property was fine.

关 键 词：α、ω-二羟基聚二甲基硅氧烷 口腔印模材料 印模精度 撕裂强度 拉伸强度 

分 类 号：R783.1[医药卫生—口腔医学]