HUEC 2045 Chapter : Exam 3 Review Chapters 9 10 11 Spring 2014
Document Summary
A natural or synthetic polymer which at room temperature can be stretched repeatedly to at least twice its original length and which after removal of the tensile load will immediately and forcibly return to approximately its original length. Isoprene repeating units - not good long-term stretch recovery. The process where fibers are formed by splitting thin film of crosslinked with sulfur rubber. Stabilizers - remove water - increase rubber content polymers into fine strands. Over 200 f sunlight oils petroleum aging polymer comprised of at least 85% of a segmented polyurethane. Better resistance to body oils, perspiration, chemicals, & aging. Cross section - round, peanut, dog bone, rectangular. Erasers - waterproof fabrics - elastic bands - balls, tires. A manufactured fiber in which the fiber-forming substance is a long-chain synthetic. Asahi kasei group - roica spandex - bayer developed. Strength weak - more durable than rubber. Perspiration, seawater, cosmetic lotions, body oils - oils & solvents.
