溶融ポリエチレンのぬれと接着性について(第 2 報)

概要

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In the previous paper, the keinetics of wetting and adhesion of various adherends by molton polyethylene in argon gas were investigated. In this paper, the keinetics of wetting and adhesion of glass plate by molten polyethylene containing 0.5mm length glass fibers were investigated. Relation among wettability, adhesiveness and surface tension γ_L and viscosity η of this composite polyethylene was also studied. The results are summarized as follows : (1) It was experimentally confirmed that the time constant τ of cos θ-t curve obtained on plain polyethylene or the polyethylene which contains glass fibers is in proportion to η/γ_L, where θ is contact angle, and τ is mainly affected by the change in η than that in γ_L, when the temperature changes. (2) According as polyethylene contains more glass fibers, τ and η increase and the rate of the increase of τ is far greater than that of η. (3) Because of the existence of glass fibers in polyethylene, wettability is reduced but the adhesive strength considerably increases and this is due to the fact that the cohesive failure occurs in the polyethylene layer and the polyethylene is reinforced by glass fibers.
社団法人溶接学会の論文
1979-10-05