The use of CaCl{sub 2} and other salts to improve surface finish and eliminate vacuoles in ICF microencapsulated shells
Journal Article
·
· Fusion Technology
OSTI ID:328365
- General Atomics, San Diego, CA (United States)
Polystyrene and poly({alpha}-methylstyrene) (PAMS) shells made by microencapsulation are prone to having vacuoles in the walls and a concomitant surface roughness. These defects can be detrimental to the implosion required for ICF shots. The authors have found that adding sufficient salt (typically CaCl{sub 2} or NH{sub 4}Cl) to the exterior polyvinylalcohol (PVA) solution during the drying phase inhibits the formation of vacuoles and decreases the surface roughness of the shells. The use of such salts does affect other shell specifications, for which other process variables must be adjusted.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-95SF20732
- OSTI ID:
- 328365
- Journal Information:
- Fusion Technology, Vol. 35, Issue 2; Other Information: PBD: Mar 1999
- Country of Publication:
- United States
- Language:
- English
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