当前位置: X-MOL 学术Macromol. Mater. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Synthesis and Characterization of CNT Composites for Laser‐Generated Ultrasonic Waves
Macromolecular Materials and Engineering ( IF 4.2 ) Pub Date : 2020-03-03 , DOI: 10.1002/mame.201900852
Patrick Oser 1 , Oliver Düttmann 1 , Fabian Schmid 1 , Levin Schulte‐Spechtel 1 , Christian U. Große 2 , Datong Wu 1
Affiliation  

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.

中文翻译:

激光产生的CNT复合材料的合成与表征

在过去的几年中,通过结合使用多壁碳纳米管(MWCNT)和聚二甲基硅氧烷(PDMS)和功能性复合材料,在超声波产生方面取得了广泛的进展。由于作为用于激光束的理想吸收体的MWCNT的高光吸收和PDMS的高热膨胀系数,可以实现紧凑的换能器,用于产生更高频率的超声波。这项研究报告了一种通过喷涂法合成沉积在玻璃基板上的MWCNT-PDMS复合材料的新方法,该方法在2小时内即可完成。层(0.9–32.2 µm)在1047 nm的波长下显示出13.9–0.0%的低光学透射特性。除了使用1%Triton-X-100储备液然后稀释至0.1%相对无害的溶液外,不使用有毒化学物质。Triton-X-100解决方案对实验室处理没有危害,是用于处理生物细胞的常用实验室清洁剂。达到的声压级为3.4 MPa,带宽为9.7 MHz。这些结果表明,可以快速,无毒地生产激光产生的超声换能器,可以很好地用于分层材料的无损材料测试领域或适当频率范围的药物中。
更新日期:2020-03-03
down
wechat
bug