On Monday we provided a review of cure kinetics (Part 9) and set the stage for an exciting series on Thermoset Cure Kinetics by Dr. R. Bruce Prime and Dr. John Avila. Over the next six weeks, the following guest posts will be presented: Thermoset Cure Kinetics Part 10: Autocatalytic Equations Thermoset Cure Kinetics Part 11: A Mathematical Approach to Kinetics ... [Click to Continue...]
Thermoset Cure Kinetics Part 9: Review of Thermoset Cure Kinetics
Guest Post by Dr. R. Bruce Prime and Dr. John Avila Like cooking, thermoset curing is a time-temperature process. Kinetics addresses relationships between time and temperature. For the next seven weeks we continue the series of 8 blogs on Thermoset Cure Kinetics posted in October, November and December 2014. The previous series covered the basic concepts of kinetics, ... [Click to Continue...]
Happy Labor Day
Wishing all my loyal readers a safe and relaxing Labor Day weekend. I am excited to announce that next week, Dr. Bruce Prime will be back with an extensive series of guest posts on Kinetics of Thermosetting Polymers. Dr. Prime is a former IBM colleague and Principal Consultant at InnoCentrix. Bruce and I have collaborated on several projects including our comprehensive book ... [Click to Continue...]
Polymers in Electronic Packaging: Introduction to Filler Dispersion Techniques
The last several posts have provided details of the rheological properties of highly filled thermoset resins. Fumed silica was shown to be a very effective rheology modifier when a yield point and shear thinning are required or to control sagging, such as for die attach or coil bond adhesive. Silica fillers are used extensively to reduce the coefficient of thermal expansion ... [Click to Continue...]
Polymers in Electronic Packaging: Impact of Particle Geometry on Rheological Properties of Highly Filled Compositions
In previous posts, the characterization and rheological properties of highly filled systems was discussed. In particular, the rheological response of epoxies filled with the common thixotrope, fumed silica filler was covered in detail. Recall that the particle-particle interactions during shearing control to a large extend the viscosity shear rate relationship. When using ... [Click to Continue...]