摘要
作者用透射电镜对辐射等效材料的无机调节剂颗粒的形貌进行了观察，测量了颗粒的直径和长度。用扫描电镜对无机调节剂与高聚物的共况相容进行了观察。测定了制备的等效材料（高聚物与无机材料共混物）的CT值，改变了材质的均匀性和辐射等效性。与此同时用吸水法和激光光斑法测定了等效材料的致密性和弹性模量．实验结果表明无机调节剂经超细粉碎处理，表面粗糙，形状呈棒状的颗粒与高聚物结合的相容性、均匀性好，辐射等效性和弹性模量均有显著提高。
MorpLology of inorganic material powders before and after being treated by ultrafine crush was ob-served by transformite electron microscope. The length and diameter of granules were measured. Polymers and in-organic material powders before and after being treated by ultrafine crush were used for preparing radiological e-quivalent materials. Blending compatibility of inorganic meterials with polymer materials was observed by scanningelectron microscope. CT values of tissue equivalent materia1s were measured by X-ray CT. Distribution of inorgan-ic materials was examined. The compactness of materials was determined by the water absorbed method. The elas-tic module of materials was measured by laser speckle interferementry method.The results showed that the inorganic material powders treated by the ultrafine crush blent well with polymerand the distribution of these powders in the polymer was homogeneous. The equivalent errors of linear attenuationcoefficients and CT values of equivalent materials were small. Their elastic modules increased one order of magni-tude from 6. 028×102kg/cm2 to 9. 753×102kg/cm2. In addition, the rod inorganic material powders having rodgranule blent easily with polymer.The present study provides a theoretical guidance and experimental basis for the design and synthesis of radio-logical equivalent materials.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
1997年第1期42-49,91,共9页
Journal of Biomedical Engineering
基金
国家自然科学基金
关键词
组织等效材料
组成
结构
电子显微镜
辐射等效性
Radiological equivalent material Composition Structure Electron microscope
