中国医疗设备2017，Vol.32Issue(10)：27-29,3.DOI:10.3969/j.issn.1674-1633.2017.10.007
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
摘要
Abstract
The present study aimed to prepare oral impression material based on polysiloxane via optimized process and formulation, using α, 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 kind of oral impression material was of low preparation cost and easy to be popularized. Impression accuracy was analyzed by molding shrinkage. Curing time was confirmed by the velocity of cross-linking. Mechanical properties were characterized by tensile strength and tear strength. The results showed that curing time, impression accuracy and mechanical properties were optimum with 100 g polysiloxane, 6 mL cross-linking agent, 7 mL catalyst, 16 g reinforcing filler, 56 g compatibilizer fillers, and 30 mL plasticizer respectively. Curing time was 10 minutes and molding shrinkage was below 0.79％. Tensile strength, elongation at break and tearing strength of oral impression material were 1.19 kPa, 24％ and 3.87 kN/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Key words
α/ω-dihydroxy polydimethylsiloxane/oral impression material/impression accuracy/tearing strength/tensile strength分类
医药卫生引用本文复制引用
张亮,马锋,邵雯,李帅帅..聚硅氧烷口腔印模材料的研制与性能[J].中国医疗设备,2017,32(10):27-29,3.基金项目
陕西省教育厅科研计划项目资助项目(2013JK0920). （2013JK0920）
