Journal
MATERIALS LETTERS
Volume 310, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2021.131132
Keywords
Polydimethylsiloxane; Polytetrafluoroethylene; Composite underwater adhesive; Electrostatic interaction; Crosslink reaction
Funding
- Special Project on Development of National Key Scientific Instruments and Equipment of China from the Ministry of Science and Technology of the People's Republic of China [2011YQ03013403]
- Suzhou medical apparatus and new medicine Fund from the Bureau of Science and Technology of Suzhou City [ZXY201440]
- Fundamental Research Funds for the Central Universities from the Ministry of Education of the People's Republic of China
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A hydrophobic composite underwater adhesive was developed by mixing liquid PDMS, micro particle PTFE, and TEOS, followed by a crosslinking reaction. The electrostatic interaction between PDMS and PTFE, along with the crosslinking reaction with TEOS, contributed to the adhesive properties and mechanical strength of the adhesive. The adhesive ability and sustainable time on various substrates were systematically evaluated to confirm its effectiveness.
A hydrophobic composite underwater adhesive was constructed through simultaneously mixing liquid polydimethylsiloxane (PDMS), micro particle polytetrafluoroethylene (PTFE) and tetraethyl silicate (TEOS) together according to the different mass ratio of component and subsequently heating crosslinking reaction. The electrostatic interaction between hydrogen atoms charged partially positively in PDMS and fluorine atoms charged partially negatively in PTFE contribute the adhesive captivity of PDMS/PTFE while the crosslinking reaction of TEOS with PDMS will enhance further effectively mechanical properties of adhesives. The adhesive ability and sustainable time to various substrate were evaluated systematically.
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