[The biological safety evaluation of a new developed silicone rubber for inflatable silastic prosthesis]. [PDF]
Hua Xi Kou Qiang Yi Xue Za Zhi, 2014 Ai T +6 more
europepmc +1 more source
Dianci bileiqi复合绝缘子由于其优良的憎水性和憎水迁移性而广泛应用于特高压输电线路中。在雨、雾、露水等潮湿天气条件下，复合绝缘子表面分离的水滴将大幅度降低其表面闪络电压。由于硅橡胶复合绝缘子表面水滴的直流闪络电压通常低于交流闪络电压，因此研究直流电场下硅橡胶表面水滴的闪络现象具有重要意义。通过试验研究了长时间直流电场作用下水滴的荷电闪络过程，并从理论上分析了其荷电闪络机理。研究结果表明，硅橡胶表面单水滴由于负极性端的电晕放电而荷上正电荷，荷电的水滴会在长时间直流电场的作用下出现“鼓包”现象，降低了硅橡胶表面的闪络电压 ...
谢超, 钟昆禹, 任飞, 杨洁民
doaj
[Effect of different polymerization methods on shear bond strength between polymethyl methacrylate and silicone soft liner]. [PDF]
Hua Xi Kou Qiang Yi Xue Za Zhi, 2014 Zhang F +5 more
europepmc +1 more source
Dianci bileiqi目前对复合绝缘子的热老化研究主要依赖试验方法进行，缺乏热老化过程中材料的微观动态变化认识。文章基于反应力场分子动力学方法，在微观原子层面对复合绝缘子的热解过程开展研究。研究发现，复合绝缘子热老化主要是硅橡胶材料发生Si-CH3、C-H、Si-O断裂，形成的产物主要包含了CH4、C2H4、H2和一些小分子硅氧烷。随着热解的持续，硅橡胶分子结构中新生成的Si-Si、Si-H键的数量不断上升，Si-Si键使得硅橡胶材料的交联度增加，Si-H键易水解形成OH。对老化后的硅橡胶进行介电常数计算发现 ...
刘海林 +4 more
doaj
[Simultaneous determination of seven dimethylcyclosiloxanes in cosmetics of different formulation systems by gel permeation chromatography purification-gas chromatography-tandem mass spectrometry]. [PDF]
Se Pu, 2022 Xiao G, Yuan L, Luo C, Luo X, Huang Y.
europepmc +1 more source
[Digital aesthetic-driven flowable resin injection restoration]. [PDF]
Hua Xi Kou Qiang Yi Xue Za ZhiLi Y +6 more
europepmc +1 more source
[Fitness of onlays fabricated with direct and indirect CAD/CAM technology <i>in vitro</i>]. [PDF]
Beijing Da Xue Xue Bao Yi Xue BanQian K, Liu Y.
europepmc +1 more source
A case of precise prosthesis under the direction of target restoration space analysis after multidisciplinary combination therapy. [PDF]
Hua Xi Kou Qiang Yi Xue Za Zhi, 2022 Yang L, Qin H, Zhang J, Han X.
europepmc +1 more source