Theimprovementofadhesionpropertyofmicroresistpatternhasbeenrecognizedasoneimportantprobleminnano-devicefabrication.Bytheheattreatment,thethermalstressconcentratesatavicinityoflineedgeofresistpattern.Bythedirectpeelingmethodwithatomicforcemicroscope(AFM),itisclarifiedthatthepatternpeelismorelikelytooccuratthepatternedge.Bycombiningwithstressanalysis,thecloserelationshipbetweenthermalstressconcentrationandpeelingpropertyisconfirmed

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Inordertostudytheeffectofcoaltarcomponentsonadhesionstrengthofheavy-dutyanticorrosivecoatingsformedwithtar-urethaneresinonsteelplates,polyurethanecoatingsthatwerecompoundedwith15kindsofpolycyclicaromaticcompoumdsasmodelcoaltarcomponentswereprepared.Afterthecoatingscompoundedwithnaphthalene,quinoline,2-naphtholandphenanthrenohavinggoodcompatibilitywithresinwerecuredonsteelplates,theadhesionstrengthofthecuredcoatingsintheordinarystateandthechangewithtimeundersalt-waterspraytestweremeasured.Thesystemcompoundedwithnaphthalene,2-naphthol,andphenanthrenowerefoundgoodpropertiesintheadhesionstrength・Howeveratthechangewithtimeundersalt-waterspraytest,onlythesystemcompoundedwith2-naphtholwasfoundtobegoodproperties.Inordertostudythemechanismofadhesiondurabilitywith2-naphthol,thecuredcoatingscompoundedwith2-naphtholandphenanthrenoasthereferenceweremeasuredtherelationshipbetweendynamicviscoelasticityandtemperature.Wefoundthattheshiftoftan6peaktowardlowtemperatureinthesystemcompoundedwith2-naphtholwasbiggerthanthatwithphenanthrene・Further,thedecreaseofstoragemodulusoftheformerwasbiggerandsharperthanthatofthelatter.Weconsideredthat2-naphtholaddedtosomeNCOgroupsinpolyisocyanateandhangedthecurednetworksystem,andthat2-naphtholresultedingoodplasticizingeffect・Inotherwords,theinnerstressinducedbycuringshrinkagewasstronglyrelaxedandthenadhesionpropertieswereimproved

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Influences of phase structure on adhesive properties of IPN type adhesive films made from epoxy and acrylate resins were investigated. It was found that adhesive properties of the IPN films depended strongly on change of phase structure, which was caused due to change of composition of epoxy/acrylate mixtures. Especially, in the vicinity of the composition at which phase inversion occurred. The IPN adhesive film showed maximum value of adhesive force. This results suggest adhesive properties, such as peel strength, of the IPN films of epoxy/acrylate mixtures can be controlled by phase structure which is dominated with composition of the mixtures and amount of initiator of photo polymerization.

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Organic/inorganic hybrids containing 4wt% to 16wt% of titania were prepared from a diglycidyl ether of hydrogenated bisphenol-A (HDGEBA) and a titanium-tetra-iso-propoxide (TTIP) by utilizing a sol/gel process. In the HDGEBA/TTTP hybrids, the storage modulus in the rubbery region kept at a high value even in the high temperature. Observation using transmission electron microscopy (TEM) revealed that the titania network was uniformity dispersed in the hybrids. When the UV light was irradiated to the epoxy/titania hybrids, contact angle decreased suddenly, and thus the surface of the hybrid materials converted from the hydrophobic to the highly hydrophilic one. As a result, the uniformity dispersing titania network in the hybrids appeared super hydrophilic property.

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