Polymer Gels Exhibiting High Pressure-Sensitive Adhesion to Polytetrafluoroethylene
Toshiya Yamasaki, Yuchen Mao, Hiroshi Ito, Jin Gong
TL;DR
Researchers developed a polymer gel that strongly adheres to PTFE without surface treatment, which is useful for high-frequency communication applications.
Contribution
A new copolymer gel with high adhesion to PTFE was developed, avoiding the need for surface treatments.
Findings
The copolymer gel P(DEAE-co-DA) showed the highest adhesive strength (430.0 N/m) and peel energy (713.4 J/m²) to PTFE.
Surface roughness had minimal impact on adhesion, with the smoothest gel surface showing the best performance.
Balancing viscoelastic deformation and cohesion in the gel explains its superior adhesion to PTFE.
Abstract
Polytetrafluoroethylene (PTFE) is attractive for high-frequency communications but adheres very poorly to other materials due to its very low surface energy. Conventionally, surface treatments of PTFE are used to increase the polarity of the PTFE surface and enable bonding to materials with increased surface free energy. However, surface treatments are difficult to scale, can damage surfaces, and often lack reproducibility. Therefore, developing a material that can make PTFE adhere well to other materials without surface treatment is highly desirable. In this study, we aimed to develop a new material with strong adhesion to PTFE. We synthesized three polymer gels from dodecyl acrylate (DA) and 2-(dimethylamino) ethyl acrylate (DMAE): the homopolymer gels PDEAE and PDA, and the copolymer gel P(DEAE-co-DA). The copolymer gel P(DEAE-co-DA) exhibited high pressure-sensitive adhesion to…
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Taxonomy
TopicsTribology and Wear Analysis · Polymer Nanocomposite Synthesis and Irradiation · Surface Modification and Superhydrophobicity