1) ultrasonic vibration time
超声分散时间
1.
It has researched the effects of ultrasonic vibration time and nano-SiO2 addition on mechanical properties of acrylic resin.
文章通过依次研究超声分散时间、纳米添加量对丙烯酸树脂力学性能的影响规律,确定当纳米S iO2含量为3%,超声分散时间为15m in时树脂胶粘剂具有最佳抗拉伸强度和较高拉伸剪切强度,都较未超声分散时提高近21%;当超声分散15m in,纳米S iO2添加量为3%时,具有最佳抗拉强度和拉伸剪切强度,较未添加纳米S iO2时分别提高4%和7%;以胶料比为2∶1加入w 40金刚石后,经3%纳米S iO2改性胶粘剂抗拉伸强度提高40%,拉伸剪切强度提高36%;采用3%纳米S iO2改性后的丙烯酸树脂胶粘剂配制的金刚石柔性磨轮较未改性金刚石柔性磨轮磨削性能有大大提高,同时证明了胶粘剂力学性能与金刚石柔性磨轮磨削性能的相对应性。
2) ultrasonic time
超声时间
1.
Centrifugal speed and ultrasonic time notably affect the SWNTs purification.
单层碳纳米管在它的纯化过程中,超声时间和离心速度对它的纯化效果有着显著的影响。
2.
The results show that the shape and size of products are strongly depended on the ultrasonic time.
结果表明:超声时间对所制备的CeF3纳米晶的形貌有很大的影响。
3) ultrasonic dispersion
超声分散
1.
The contact mass prepared with ultrasonic dispersion method was proved to hold higher activity than that of prepared with simple mixing method.
采用简单混合法和超声分散法2种催化剂触体制备方法,将自制铜粉与适量的氧化锌助催化剂混合,由直接法合成甲基氯硅烷,并建立了毛细管气相色谱法定量分析甲基氯硅烷的方法。
2.
A PVDF/Polyacrylate composite emulsion was prepared by emulsion polymerization using mixture of polyvinylidene fluoride,methyl methacrylate and butyl acrylate monomers in presence of fluorine-containing surfactant by ultrasonic dispersion process.
在含氟表面活性剂存在下,将聚偏氟乙烯超声分散于甲基丙烯酸甲酯和丙烯酸丁酯的混合单体中进行乳液聚合,制备了聚偏氟乙烯/聚丙烯酸酯复合乳液。
3.
The influence of ultrasonic dispersion time,seed type and DVB concentration were discussed.
利用超声分散改进的二步溶胀法制备4~9μm的聚苯乙烯-二乙烯苯(PSt-DVB)多孔微球,并以防晒剂parsol 1789为模型组分考察了其缓释性能。
4) Ultrasonic dispersion
超声波分散
1.
Ni-based nano-composite coatings with nano-Si3N4 particles were prepared on pure copper matrix by using ultrasonic dispersion technique plus magnetic stirrer technique.
采用超声波分散加机械搅拌技术在纯铜板上制备了含有纳米Si3N4颗粒的镍基纳米复合镀层,研究了分散方式对复合镀层中纳米颗粒含量、复合镀层组织结构、显微硬度和磨损性能的影响。
2.
And dispersion effects on fibrous brucite were compared using ultrasonic dispersion and mechanism dispersion.
试验研究了不同类型的分散剂、不同加入量以及不同的搅拌速度和搅拌时间对纤维水镁石的分散效果,并且对超声波分散与机械分散效果进行了比较。
3.
Nano-MgO was surface modified under ultrasonic dispersion using titanate coupling agent as modifier.
以钛酸酯偶联剂为改性剂,采用超声波分散的方法对纳米氧化镁(MgO)进行了表面改性。
5) ultrasonic technique
超声分散法
1.
Objective To prepare solid lipid nanoparticles containing praziquantel(PZQ-SLN) by ultrasonic technique,and investigate the main factors in the process of preparing PZQ-SLN.
目的采用超声分散法制备吡喹酮固体脂质纳米粒,并考察制备过程中的主要影响因素。
2.
Aim To prepare solid lipid nanoparticles (SLN) loaded with all-trans retinoic acid using an ultrasonic technique with Compritol 888 ATO as matrix material, and investigate properties of nanoparticles in vitro and in vivo.
目的 以山嵛酸甘油酯(Compritol888ATO)为脂质材料,采用超声分散法制备维甲酸固体脂质纳米粒,并考察其体内外性质。
6) ultrasonic vibration
超声波分散
1.
The attapulgite was dispersed in the water by stirring and ultrasonic vibration, observing the shape of the attapulgite with TEM after the process.
采用超声波分散方法将凹凸棒土(简称凹土AT)在水中进行分散,然后用硅烷偶联剂KH570对凹凸棒土纳米棒晶进行表面处理,采用X射线光电子能谱(XPS)对表面结构进行了表征。
2.
The attapulgite was dispersed in the toluene by stirring and ultrasonic vibration, and then was treated with a silane coupling agent KH570 and in situ graft polymerization of methyl methacrylate on the AT surface.
利用超声波分散处理凹凸棒土,分别采用硅烷偶联剂KH570对其进行表面修饰和溶液聚合法在修饰后的凹土表面原位接枝聚合MMA单体,将经上述处理的凹土与LDPE(低密度聚乙烯)复合制备LDPE/AT纳米复合材料。
3.
Attapulgite was dispersed in toluene via stirring and ultrasonic vibration, and subsequently treated with a silane coupling agent KH570.
采用超声波分散方法将凹凸棒土 (AT)在甲苯中进行分散 ,然后采用硅烷偶联剂KH5 70对凹凸棒土纳米棒晶进行表面处理 ,将经上述处理的凹凸棒土与低密度聚乙烯 (PE LD)复合制备纳米粒子复合材料 ,研究了纳米粒子复合材料的晶体结构与性能。
补充资料：超声
超声
UltrasofliCS
是指超出人耳听力范围的高频声(频率超过20000Hz）。超声具有与一般声音共同的物理性质，还具有一些其他重要的物理特性，如能够成束发射，直线传导，方向性好。传导过程中遇有声阻抗不同的反射界面时产生反射、折射、聚焦和散焦等现象。用于临床诊断的超声频率一般为2～7.5MHz。频率越高，对组织结构的分辨力越强，但远场声能容易被组织吸收、衰减，不易穿透较深的层次。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条