TY - JOUR
T1 - Polyethylene fibers‐polyethylene matrix composites
T2 - Preparation and physical properties
AU - Teishev, Albert
AU - Incardona, Silvia
AU - Migliaresi, Claudio
AU - Marom, Gad
PY - 1993/10/15
Y1 - 1993/10/15
N2 - Drawing on the difference in melting points of UHMPE fiber (150°C) and HDPE matrix (130°C), single‐polymer composites were fabricated under various processing conditions. Because of the chemical similarity of the composite components, good bonding at the fiber‐matrix interface could be expected. The matrix, the fiber, and unidirectional composite laminae were studied using TMA and DSC analyses, a hot‐stage crystallization unit attached to a polarizing microscope, and an universal tensile testing machine. The TMA showed negative thermal expansion of the fiber over the complete temperature range of the experiment. Three regimes of contraction according to the values of the thermal expansion coefficient were detected. DSC analyses of either the fiber or the composite specimens did not show any appreciable changes after various thermal treatments. They also showed no evidence of fiber relaxation during manufacture, probably because of the pressure‐related transverse constraint. The tensile strength and modulus values of the composite appeared to be fairly high and close to those reported for other composites reinforced with polyethylene (PE) fibers. An apparent maximum on the temperature dependencies of tensile properties was observed. A study of the matrix microstructure did not give any proof of transcrystalline growth at the fiber‐matrix interface even for chemical or plasma surface‐treated fibers. © 1993 John Wiley & Sons, Inc.
AB - Drawing on the difference in melting points of UHMPE fiber (150°C) and HDPE matrix (130°C), single‐polymer composites were fabricated under various processing conditions. Because of the chemical similarity of the composite components, good bonding at the fiber‐matrix interface could be expected. The matrix, the fiber, and unidirectional composite laminae were studied using TMA and DSC analyses, a hot‐stage crystallization unit attached to a polarizing microscope, and an universal tensile testing machine. The TMA showed negative thermal expansion of the fiber over the complete temperature range of the experiment. Three regimes of contraction according to the values of the thermal expansion coefficient were detected. DSC analyses of either the fiber or the composite specimens did not show any appreciable changes after various thermal treatments. They also showed no evidence of fiber relaxation during manufacture, probably because of the pressure‐related transverse constraint. The tensile strength and modulus values of the composite appeared to be fairly high and close to those reported for other composites reinforced with polyethylene (PE) fibers. An apparent maximum on the temperature dependencies of tensile properties was observed. A study of the matrix microstructure did not give any proof of transcrystalline growth at the fiber‐matrix interface even for chemical or plasma surface‐treated fibers. © 1993 John Wiley & Sons, Inc.
UR - http://www.scopus.com/inward/record.url?scp=0027909940&partnerID=8YFLogxK
U2 - 10.1002/app.1993.070500314
DO - 10.1002/app.1993.070500314
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AN - SCOPUS:0027909940
SN - 0021-8995
VL - 50
SP - 503
EP - 512
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
IS - 3
ER -