Experimental investigation for modeling the hardening of thermosetting polymers during curing
نویسندگان
چکیده
During curing of thermosetting polymers, crosslinking results in hardening or stiffening the material. In electronics, for example encapsulating integrated circuits (die bonding), thermosets are fully cured a controlled environment (under UV-light within thermal oven) such that highest stiffness possible has been achieved. building materials, specifically used fastening systems (adhesive anchoring), occurs at environmental temperature. Daily temperature variations alter process and possibly lead to lower stiffness. We demonstrate modeling approach mechanical response dependency on degree cure by means rheometer measurements under specific profile. Precisely, we perform oscillatory rheometric tests convert storage loss moduli material parameters depending cure. Moreover, as well chemical shrinkage have determined same experimental protocol. The presented applied commercially available (epoxy) thermoset an adhesive. observed after gelation point 0.7 adequate fit polynomial functions four.
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ژورنال
عنوان ژورنال: Polymer Testing
سال: 2021
ISSN: ['1873-2348', '0142-9418']
DOI: https://doi.org/10.1016/j.polymertesting.2021.107310