Journal of The Adhesion Society of Japan
Online ISSN : 2187-4816
Print ISSN : 0916-4812
ISSN-L : 0916-4812
Volume 47, Issue 8
Displaying 1-5 of 5 articles from this issue
Review
Review
Review
Original Paper
  • Zenichi MIYAGI, Yusuke KONDO, Soichi SAIGA
    2011 Volume 47 Issue 8 Pages 302-308
    Published: August 01, 2011
    Released on J-STAGE: June 30, 2014
    JOURNAL FREE ACCESS
    It is important to study the shearing properties of pressure sensitive adhesives (PSA) in the micro -deformation range because of the applications of PSA in industry. The standard test method has been used mainly for quality control purposes; however,such the test method lacks sufficient resolution to analyse the shear adhesion properties of PSA. Hence,a higher resolution test apparatus has been developed. The apparatus can be used to analyse the static visco-elastic properties of PSA with a maximum measurement resolution of 10 nm using a laser displacement sensor. In particular,the apparatus is useful for evaluating the cohesive properties of PSA because of its high resolution.In an experiment performed using the apparatus, the deformation and slippage of anacrylic PSA specimen were measured under different test conditions. The influence of cross-linking agent ratio and adherend temperature on the shearing properties of PSA were evaluated using a visco-elastic model that describe micro-deformation. As a result by using analysis of variance, the effects of the adherend temperature and of the cross-linking agent ratio were significant on the visco-elastic coefficients of PSA. The analysis results for creep compliance revealed that the effects caused by the cross linking agent ratio and the adherend temperature occurred at later loading times. In addition, the time-temperature superposition principle was applicable to the shear loading time and the adherend temperature within the experimental range of 15 to 65℃ in the micro-shearing adhesive test.
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Original Paper
  • Keiko ITO, Yoshiaki URAHAMA, Yoshinobu NAKAMURA
    2011 Volume 47 Issue 8 Pages 294-301
    Published: August 01, 2011
    Released on J-STAGE: June 30, 2014
    JOURNAL FREE ACCESS
    The pressure-sensitive adhesive (PSA) tapes are utilizing in a wide range of fields. The PSA properties are dependent strongly on the mechanical properties of PSA, especially the stringiness as the typical deformation behavior at peeling of PSA.So, the apparatus which can observe the top and side views of stringiness behavior of PSA was prepared. The stringiness behavior of the acrylic PSA with different crosslinking degree was observed with wide range of peeling load. The exact peel rate of each peeling was also measured. As a result, the true strain rate of PSA at peeling can be calculated from the measured exact peel rate and the stringiness width and length. Moreover, the stringiness width and length during the cohesive failure process can also be measured using the apparat us. In future, the peel strength of PSA expected to be designed by using the mechanical properties of PSA polymer such as the stress-strain curve at the tensile rate corresponding to the exact strain rate at peeling.
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