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维生素B1场效应传感器的研制及应用 总被引:1,自引:0,他引:1
本文以四苯硼酸盐为载体,制成了维生素B_1SOS型半导体场效应传感器.该传感器的线性范围为10~(-1)~ 7.9×10~(-5)mol/L,pH范围2.3~4.8.用该传感器测定了维生素B_1针剂和片剂的含量,与药典法比较,结果无显著差异. 相似文献
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含铝PSBR复合橡胶的制备及其力学性能 总被引:2,自引:0,他引:2
利用铝的醇盐与PSBR季铵盐乳液反应,制成含铝有机-无机杂化弹性体胶片,再与天然橡胶进行并用,制得含铝PSBR复合硫化胶,这种复合硫化胶具有优良的力学性能和独特的抗震作用,用IR和NMR以及其它方法分析了其相关结构. 相似文献
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含硅聚氨酸弹性体的合成初探 总被引:1,自引:0,他引:1
从酸化的水玻璃中提取活性硅醇,然后与聚醚二醇混合,再与异氰酸酯反应,制得含硅的聚氨酯弹性体。并用固体核磁共振仪和热重分析仪对硅醇的混合物的结构进行了分析。结果表明:当硅醇添加量在一定范围内,弹性体的力学性能有所提高;在多元醇和硅醇之间没有产生明显的化学结合。 相似文献
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PMMA wrapped alumina-siloxane gel was obtained by using poly (methyl methacrylate) (PMMA) to wrap alumina-siloxane sol which was made from water glass, aluminum nitrate and a-methacrylic acid. Meanwhile, rare earth ions were used to dope in the course of reaction, and stable suspensions was produced by putting PMMA wrapped microcapsule powder doped with rare earths into methy-silicon oil. It is found that its electrorheologlcal (ER) effect improves strikingly after loading electric field. At a certain concentration, the immediate viscosity increases from 95 to 178 Pa‘s compared to the system without doping. 相似文献
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Poly(methyl methacrylate) (PMMA) was used to wrap alumina-siloxane sol through emulsion polymerization. A kind of suspensions with notable ER effect was produced by fully mixing the prepared microcapsule with silicon oil. Meanwhile a series of PMMA wrapped alumina - siloxane gel doped with rare earths was obtained and its ER effect was tested, like viscosity of different rare earth ion doped samples in different powder concentrations and at different temperatures, at the same time, leak current density and dielectric constant were measured. Resuits show that the ER effect of this suspension is remarkable, and its stability is much better. The condition of emulsion polymerization and the mechanism of effect are discussed. 相似文献
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Preparation of Dysprosium Ferrite/Polyacrylamide Magnetic Composite Microsphere and Its Characterization 总被引:2,自引:0,他引:2
Researchofmagneticpolymermicrospherehasbeenstudiedsincethe 1970s .Themagneticpolymermicrospherecombinesthepropertyofmagneticparticlewiththatofmacromoleculeparticle .Itnotonlycanbeseparatedfromthemediumeasily ,butalsocanbesurface modifiedinorderthatthesurf… 相似文献
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离子敏感场效应传感器(简称 ISFET)是1970年由 P.Bergveld 首先报道的,此后国内外不少学者如此做了研究。作者利用高锰酸十六烷基三甲基铵缔合物为电活性物质,用二正辛基苯基磷酸酯为增塑剂,研制成新型 Mn~(2+)-ISFET。经测定该器件的性能参数为:线性范围10~(-1)~3.2×10~(-4)mol/L,检测下限可达1.6×10~(-4)mol/L,灵敏度为29±1mV。 相似文献