Abstract
The adhesive strength of ethylene-tetrafluoroethylene copolymer (ETFE) was measured on silicate glass substrates. A value of over 300 kg/cm 2 obtained with a commercial soda-lime-silica glass and this initial adhesiveness was attributed to the marked wettability of molten ETFE and its chemical structure. Since the decrease in the adhesive strength was small after immersion in water for a dealkalized soda-lime-silica glass, Pyrex, and a soda-lime-silica glass coated witn In 2O 3, it was inferred that the sodium ions in the soda-lime-silica glass played a fundamental role in lowering the adhesive strength in the presence of water. Pretreatment with N-( β-aminoethyl)- γ-aminopropyl-trimethoxy silane markedly improved the water durability of the adhesive strength.
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