排序方式: 共有21条查询结果,搜索用时 15 毫秒
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Dynamic vulcanization of rubber in rubber/plastic blend thermoplastic elastomers poses challenge to the traditional concept on morphology of thermoplastic elastomers. TEM and SEM micrographs of OsO_4-stained samples and samples with EPDM dissolved by heptane or etched with CrO_3/H_2SO_4 reveal that the blends with uncrosslinked EPDM have a predominant component as the continuous phase, while the blends with crosslinked EPDM always have PP as the continuous phase even at R/P>50/50. In the latter case, crosslinked EPDM exists as the micro-domains imbedded in the PP matrix. This explains the plasticity and higher strength of the crosslinked blends. 相似文献
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基于C语言STC89C52单片机电子密码锁的设计与仿真 总被引:1,自引:0,他引:1
介绍一种通过Protues软件成功仿真的电子密码锁的实现过程。它采用高可靠性的STC89C52单片机来实现开锁和密码的识别,采用具备I^2C总线接口的E^2PROM芯片来完成密码的存储,通过1602液晶显示器提示程序运行状态和使用步骤,利用蜂呜器模拟报警,发光二极管模拟锁的开关。该系统用C语言编写程序,与汇编语言相比具备更好的移植性和可读性,便于修改和增减功能。 相似文献
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The novel perfluorinated vinyl ether containing sulfonimide functionality CF2 = CFORfSO2NHSO2CF3 was synthesized by multiple reaction steps. It could be copolymerized with tetrafluoroethylene by radox initiator to give a novel perfluorinated ionomer polymer. Its physical and chemical properties were studied. 相似文献
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研究了一类L形和矩形谐振腔侧面耦合MDM结构亚波长表面等离激元滤波器的色散关系和透射谱。研究结果表明等效折射率的实部和虚部在短波部分变化较大,在长波部分(800 nm-2000 nm)趋于稳定值,传播距离随着波长的增加和介质层厚度的增加均增加,当波导宽度在50 nm以上时,SPPs的传播距离在所研究的波长范围为4-9 um,可以满足纳米光子器件的尺寸要求;通过对侧面 型谐振腔和矩形谐振腔耦合的透射谱研究表明在保持腔体总长度不变的情况下,两种耦合方式所产生的光谱曲线完全相似,说明禁带的出现只与谐振腔的长度有关系,对集成光子器件的研发具有一定的参考意义。 相似文献
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