TY - JOUR
T1 - P-V-T-C equation for epoxy molding compound
AU - Hwang, Sheng Jye
AU - Chang, Yi San
N1 - Funding Information:
Manuscript received May 11, 2004; revised February 20, 2005. This work was supported in part by National Science Council, Taiwan, R.O.C., (NSC 91-2212-E-006-083). This work was recommended for publication by Associate Editor C. P. Wong upon evaluation of the reviewers’ comments.
PY - 2006/3
Y1 - 2006/3
N2 - The isothermal and isobaric volume shrinkage is measured by a single-plunger-type dilatometer for epoxy molding compound (EMC). This device has been found suitable for measuring volume change of thermosetting materials such as commercial EMC under isothermal and isobaric conditions. Moreover, the degree of cure (conversion) was determined by a differential scanning calorimetry (DSC). Combining volume change and conversion, a mathematic pressure-volume-temperature-cure (P-V-T-C) model is proposed to describe the relationship between volume shrinkage, pressure, temperature and conversion. The P-V-T-C equation can be simply expressed as VS (P,T,C) = F1 (P,T) · CF2(P,T). This equation can well describe historical profiles of volume shrinkage under specified isothermal and isobaric states. From the predicted results, volume shrinkage under different pressure levels in any specified temperature can be approximated as and it obeys the principle of linearity. With the help of this model, together with three-dimensional mold filling simulation, engineers will be able to predict warpage and residual stresses for a package after molding.
AB - The isothermal and isobaric volume shrinkage is measured by a single-plunger-type dilatometer for epoxy molding compound (EMC). This device has been found suitable for measuring volume change of thermosetting materials such as commercial EMC under isothermal and isobaric conditions. Moreover, the degree of cure (conversion) was determined by a differential scanning calorimetry (DSC). Combining volume change and conversion, a mathematic pressure-volume-temperature-cure (P-V-T-C) model is proposed to describe the relationship between volume shrinkage, pressure, temperature and conversion. The P-V-T-C equation can be simply expressed as VS (P,T,C) = F1 (P,T) · CF2(P,T). This equation can well describe historical profiles of volume shrinkage under specified isothermal and isobaric states. From the predicted results, volume shrinkage under different pressure levels in any specified temperature can be approximated as and it obeys the principle of linearity. With the help of this model, together with three-dimensional mold filling simulation, engineers will be able to predict warpage and residual stresses for a package after molding.
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U2 - 10.1109/TCAPT.2005.853171
DO - 10.1109/TCAPT.2005.853171
M3 - Article
AN - SCOPUS:33644806428
SN - 1521-3331
VL - 29
SP - 112
EP - 117
JO - IEEE Transactions on Components and Packaging Technologies
JF - IEEE Transactions on Components and Packaging Technologies
IS - 1
ER -