粘着テープの基礎と物性
6. 遅延スペクトルによる粘着剤物性の評価
2004 年 77 巻 9 号 p. 324-329
詳細
2004 年 77 巻 9 号 p. 324-329
A pressure sensitive adhesive is a lightly cross-linked polymer with the capability of 1, 000-2, 000% of large deformation. The behavior completely differs from the behavior of linear viscoelasticity. Numerical differentiation of the large-deformation creep data was carried out, and the retardation spectrum was obtained.
As a result, the followings became clear.
(1) It became clear that the influence of the cross-linking degree of PSA appears in a long-term region, while the effect of chemical composition of a PSA appears in a short-term region.
(2) In polymer/tackifier PSA system, it became clear that the short-term region of the retardation spectrum shape depends on the chemical structure of the tackifier, while the long-term region of it depends on the softening point.
