Transfer molding of close-tolerance parts. Final report. [Electronics packaging module]
The objective of this project was to determine the optimum molding processes for selected transfer molding materials such as phenolic, epoxy, and diallyl phthalate filled with mineral and glass fibers, macerated fabric, woven glass, and glass microballoons. The need for this project was dictated by the trend in product designs toward more complex part configurations and more stringent dimensional and structural requirements. Rapid advancements in the plastics industry made it difficult to fully evaluate a material before using it to mold products. Sometimes this resulted in retrofits to assemblies when it was subsequently learned that a part was not compatible with its environment. Difficulties were also experienced in testing materials when vendor results were different from Bendix results. This was a result of different testing procedures and changes in properties caused by different storage and handling procedures. The development studies conducted during this project utilized statistically designed experiments to efficiently produce the desired data. These studies consisted of altering the molding parameters and determining the resulting effects on material moldability, dimensional stability, visual part quality, and physical properties.
- Research Organization:
- Bendix Corp., Kansas City, MO (United States)
- DOE Contract Number:
- EY-76-C-04-0613
- OSTI ID:
- 7091491
- Report Number(s):
- BDX-613-1542(Rev.)
- Country of Publication:
- United States
- Language:
- English
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