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دانلود رایکان مقاله انگلیسی ISI با موضوع شرایط مختلف عمل آوری یا پخت برای کنترل بافت میکرو الیاف یا نانو الیاف PTFE

عنوان فارسی مقاله:

شرایط مختلف عمل آوری یا پخت برای کنترل بافت میکرو الیاف یا نانو الیاف PTFE یک سطح پوششی فراآبگریز بیونیک

عنوان انگلیسی مقاله:

Various curing conditions for controlling PTFE micro/nano-fiber texture of a bionic superhydrophobic coating surface

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بخشی از مقاله انگلیسی :

3. Results and discussion 

3.1. The control of the MNBS by curing temperature

Fig. 1 shows the effect of the curing temperature on the WCA and WSA of the PTFE/PPS superhydrophobic surfaces upon stainless steel substrate, respectively. It can be clearly seen that theWCA increases slightly with increasing curing temperature up to approximately at 370 ◦C and then increases sharply. The WCA changed from about 155◦ to 159◦ and the WSA from 13◦ to 10◦, respectively, when the curing temperature increased from 340 ◦C to 370 ◦C. At the highest curing temperature up to about 400 ◦C, the PTFE/PPS superhydrophobic coating surface has the largest WCA with about 169◦ and the smallest WSA of about 3◦ (similar to the WSA of the lotus leaf), and water droplets could be moved upward easily even if the surface is only slightly tilted or shaken. Accordingly, the PTFE/PPS superhydrophobic coatings cured at higher temperature possess better superhydrophobicity.