共查询到19条相似文献,搜索用时 406 毫秒
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对于镀膜工序来说,基底的清洗是必不可少的一个环节,基底清洁程度是影响镀膜产品质量的关键因素之一,保障元件镀膜前表面高洁净度,降低薄膜内的杂质污染物,镀膜前的洁净清洗至关重要。综述光学滤光片镀膜前常用的基片清洗方法,包括擦拭清洗、超声波清洗、汽相清洗和离子束清洗方法,阐述光学滤光片镀膜前基片清洗工艺和其他清洗技术一样,主要朝绿色环保、全自动、高效、低成本的趋势发展。 相似文献
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超声在陶瓷膜处理乳化含油废水中的作用研究 总被引:2,自引:0,他引:2
Ultrasonic field was applied in the treatment of oil emulsification wastewater by ZrO2 ceramic mem-brane. The permeate flux, rejection ratio in the filtration process and recovery ratio of flux in the membrane cleaning process were measured. Great improvement in the permeate flux and rejection ratio have been observed for the membrane process enhanced by the ultrasonic field. The permeate flux of water through the membrane was about 210L.m^-2.h^-1 and the oil rejection ratio was over 99.9% under the optimal ultrasonic treatment conditions, which were 8W of ultrasonic power, 7cm of ultrasonic probe length introduced into the membrane channel and the same ultrasonic radiation direction as the wastewater flow. The resistance of the membrane process was compared between the cases with and without ultrasound, and the total resistance was reduced 68% by the use of ultrasound, Four methods including water cleaning, water cleaning under sonication, chemical cleaning and chemical cleaning under sonication were used to recover membrane flux. It was found that the flux recovery ratio increased with the increase of ultrasonic cleaning power. In addition, the use of chemical agents combining with ultrasonic irradiation showed a synergistic effect, which resulted in the highest cleaning efficiency and the shorter cleaning time. 相似文献
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《中国洗涤用品工业》2020,(1):57-67
在许多应用中,亚毫米微小器件的表面清洗依然是一个巨大的挑战。这种挑战可能是颗粒在微观尺度上的强黏附、样品的难以处理、黏附颗粒的小尺寸和不利的几何形状等中的一种或多种。尽管如此,在器件加工、组装、包装、应用和测量之前通常是需要深度清洗的。以前对CO2雪清洗的评估几乎完全是指清洗光滑度,凹陷或凸起的表面,通常检查的器件是晶片和光学元件。在本文中,我们研究了微型齿轮上复杂表面形状的CO2雪清洗。将CO2雪清洗的效果与超声波清洗和高速空气喷射清洗进行了比较。通过对清洗前后四个研究样品的光学显微镜图像的分析,评估了72次清洗实验。结果表明,CO2雪清洗方法可以清楚测试样品中超过95%的微米级污染物。相比较而言,超声波清洗只能除去88%的颗粒,高速空气喷射也仅能除去74%的颗粒。 相似文献
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Patrick Oser Oliver Düttmann Fabian Schmid Levin Schulte‐Spechtel Christian U. Große Datong Wu 《大分子材料与工程》2020,305(4)
In the last few years, extensive progress in ultrasonic wave generation by using multiwalled carbon nanotubes (MWCNTs) in combination with polydimethylsiloxane (PDMS), functional composites, has been achieved. Due to high optical absorption of MWCNTs as perfect absorbers for laser beams and the high thermal expansion coefficient of PDMS, a compact transducer for ultrasonic wave generation at higher frequency can be realized. This study reports a novel method to synthesize MWCNT–PDMS composites deposited on a glass substrate by spray coating, which is done in a short time of 2 h. The layers (0.9–32.2 µm) show low optical transmission properties of 13.9–0.0% at a wavelength of 1047 nm. Apart from using a 1% Triton‐X‐100 stock solution and then diluted to a 0.1% relatively nonhazardous solution, no toxic chemicals are used. The Triton‐X‐100 solution is not hazardous for lab handling and is a commonly used lab detergent for the treatment of biological cells. The achieved sound pressure level is 3.4 MPa with a frequency bandwidth of 9.7 MHz. These results show the potential for a fast and nontoxic production of laser‐generated ultrasonic transducers, which can be used well in the field of nondestructive material testing of layered materials or in medicine with an appropriate frequency range. 相似文献
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为优化超声波清洗-复苏药剂复苏受铁离子污染的阳离子交换树脂处理工艺,采用单因素试验和正交试验方法,考察了阳树脂在不同复苏试剂、超声波功率、超声波时长等因素影响下的复苏效果.试验结果表明:在超声波功率为60 W,超声波时长为90 min,采用亚硫酸钠复苏时,可将树脂的交换容量恢复至92.6%.复苏药剂的种类对树脂复苏效果... 相似文献