EXTRA FLEXIBLE COAXIAL CABLE,
Abstract
New freeze-resistant materials were evaluated for radiofrequency coaxial cables. MIL-C-17 coaxial cables having Type A polyethylene dielectric cores and Type IIa noncontaminating (nitrile rubber plasticized) polyvinyl chloride jacketing were found too stiff at subzero temper atures; vinyl jacketing cracked even above -40C. A blend of poly-alphaolefin with polyethylene was found to be electrically equivalent to polyethylene up to at least 10 Gc, and only 1/3 as stiff at -40 and -55C. Two thermoplastic polyester type urethanes and an ethylene copolymer jacketing material were found more flexible than vinyl down to -55C. The urethanes degrade after a long period of time at high humidity, but should be considerably better than polyolefins in abrasion resistance. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1963
- Accession Number
- AD0603188
Entities
People
- Dan Lichtenstein
Organizations
- United States Army Communications-Electronics Command