CONFORMAL COATINGS FOR PRINTED CIRCUIT ASSEMBLIES

reportActive / Technical Report | Accession Number: AD0293234 | Open PDF

Abstract:

Investigation of one-component epoxy, acrylic, and polystyrene-base coating compounds for use as conformal coatings on Type GB GLASS-EPOXY LAMINATE WAS CONDUCTED. To eliminate all corrosion effect other than those from the testing or the coating itself, a stepwise cleaning technique for the surface of the specimen panel was devised. A visual check of the coated test panels revealed no evidence of blistering, wrinkling, cracking and peeling of coating and no corrosion of printed conductors. All coatings showed good adhesion of specimen test panels. The effects of the thickness of coatings on insulation resistance and Q-factor under prolonged humidity conditions were studied. The effects of coatings on copper, gold and solder-plate conductors with respect to their effect on Q-factor an capacity at 1, 50 and 100mc were also studied.

Author(s):
Beccasio, Anthony J.
Author Organization(s):
MOTOROLA INC CHICAGO IL
Descriptive Note:
Quarterly rept. no. 5, 16 Jul-31 Oct 1962
Pagination:
0028

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
DA-36-039-SC-89136
Monitor Series:
DA
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.5.2_Task; JCA_5.5_Direct; JCA_5.3_Planning; JCA_6.4.1_Secure Information Exchange; JCA_5.3.3_Develop Strategy; JCA_5.3.4_Develop Courses of Action; JCA_5.3.5_Analyze Courses of Action; JCA_6.4_Information Assurance; JCA_6_Net Centric
Modernization Areas:
Microelectronics
Communities of Interest:
Advanced Electronics
Descriptor(s):
*LAMINATES, *COATINGS, *PLASTIC COATINGS, *PLASTICS, THICKNESS, PREPARATION, STYRENES, ACRYLIC RESINS, HUMIDITY, LAMINATED GLASS, HAND CRANKS, EPOXY RESINS, CLEANING, SURFACES, AGING(PHYSIOLOGY), ADHESION, POLYMERS
Field(s)/Group(s):
Inorganic Chemistry, Coatings, Colorants and Finishes, Laminates and Composite Materials
Keyword(s):
Q FACTOR
Report Date:
1962 Oct 31