Adhesive Dispensing Process Analysis: Steady-State Dispensing of One-Component Adhesives
| Autor: | Ray A. Dickie, C. Li |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Materials science
Steady state Flow (psychology) Fluid mechanics Surfaces and Interfaces General Chemistry Mechanics Epoxy Surfaces Coatings and Films Physics::Fluid Dynamics Viscosity Rheology Mechanics of Materials visual_art Materials Chemistry visual_art.visual_art_medium Newtonian fluid Adhesive Composite material |
| Zdroj: | The Journal of Adhesion. 35:115-134 |
| ISSN: | 1545-5823 0021-8464 |
| DOI: | 10.1080/00218469108030441 |
| Popis: | The process of dispensing one-component heat-cure adhesives was investigated in order to understand current application processes and to guide new process development. Typical one-component adhesives exhibit non-Newtonian rheological behavior, and hence Newtonian fluid mechanics does not adequately describe the dispensing process. In the present study, the adhesives were modeled as Bingham fluids possessing a yield stress and a steady state viscosity. The model of the dispensing apparatus includes four major flow sections connected in a serial configuration. The fluid mechanics equations derived for Bingham fluids in the individual flow sections were solved by numerical methods in order to understand the interrelationships between the material variables (e.g. yield stress, viscosity, temperature dependencies) and process variables (e.g. pressure, flow geometry, temperature, output). The concept of the model is generic and the details of the model can be modified for any forced-flow adhesive appli... |
| Databáze: | OpenAIRE |
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