简介:通过微弧氧化法在新型医用近β钛合金Ti-3Zr-2Sn-3Mo-25Nb表面制备一层含Ca、P多孔薄膜,再将其在胺基化溶液中活化处理以在薄膜表面引入NH-2。借助XRD、SEM和EDS研究该多孔复合薄膜的组成和表面形貌,并通过模拟体液浸泡实验、体外细胞培养实验和动物体内植入实验研究经上述表面改性处理后的Ti-3Zr-2Sn-3Mo-25Nb合金的骨诱导活性。结果表明:该薄膜主要由金红石型TiO2和锐钛矿型TiO2组成,是一种含有Ca、P的陶瓷混合物;薄膜在模拟体液中具有很好的生物活性,成骨细胞能够很好地在薄膜上分化、生长;表面覆膜处理的Ti-3Zr-2Sn-3Mo-25Nb合金的体内骨诱导活性优于未处理的Ti-3Zr-2Sn-3Mo-25Nb合金的。
简介:合成了一种新型磷-氮复合膨胀型阻燃剂2,6,7-(三氧杂-1-氧代-1-磷杂双环[2.2.21辛烷-4-亚甲基)一二(4-.氨基苯基磷酸酯)(PDAP),并对其结构进行了测定。研究了其作为活性阻燃剂在挠性覆铜板(FCCL)的应用,对比实验证实其比传统的改性环氧树脂具有更好的阻燃性和耐高温性,其剥离强度达到1.8N/cm。
简介:SY509-3-01[篇名]Characterizationofsaltparticle-inducedcorrosionprocessesbysynchrotron-generatedX-rayfluorescenceandcomplementarysurfaceanalysistools;SY509-3-09[篇名]ChemicalandElectricalTechniquesforConditionAssessmentofCompositeInsulators;……
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