Application of Nitrogen Piezoelectric Direct Discharge for Increase in Surface Free Energy of Polymers

Plasma

Florian Hoppenthaler¹  Sophia Guentner¹  Simona Lerach¹  Thomas Andres¹  Dariusz Korzec¹ 

[1] Relyon Plasma GmbH, Osterhofener Straße 6, 93055 Regensburg, Germany;

关键词: atmospheric pressure plasma (APP);    resonant piezoelectric transformer;    piezoelectric direct discharge (PDD);    high-density polyethylene (HDPE);    surface free energy (SFE);   

DOI  :  10.3390/plasma5010009

来源: DOAJ

【 摘 要 】

The subject of this study is the application of the piezoelectric direct discharge (PDD) operated with nitrogen to control the surface free energy (SFE) of polymers. The activation area, defined as the area of the zone reaching the SFE of 58 mN/m for high-density polyethylene (HDPE) and poly (methyl methacrylate) (PMMA), is characterized. For HDPE, the activation area was characterized as a function of the distance from 1 to 16 mm, the nitrogen flow from 5 to 20 SLM, and the treatment time from 1 to 32 s. For larger distances, where SFE does not exceed 58 mN/m, the water contact angle is evaluated. The activation area for nitrogen PDD is typically a factor of 3 higher than for air with all other conditions the same. A maximum static activation area of 15 cm${}^2$ is reached. The plasma treatment of lens panels made of PMMA is presented as application example.

【 授权许可】

Unknown