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Improving the low-temperature toughness of PPR pipe by compounding with PERT
Journal of Polymer Research, 2021In this research, multi-layer co-extrusion technology was adopted to prepare Polypropylene random copolymer (PPR)/Polyethylene of raised temperature resistance (PERT) composite pipes. The structures and mechanical properties of PPR/PERT composite pipe were investigated by scanning electron microscopy (SEM), Dynamic thermomechanical analysis (DMA) and ...
Yunqi Wu +4 more
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Low temperature impact toughness of high strength structural steel
Thin-Walled Structures, 2018Abstract Impact toughness properties of four kinds of high strength steel (HSS) were investigated with the nominal yield strength 460, 690, 800 and 960 MPa, respectively. The specialty of impact toughness among base metal, heat affected zone (HAZ) and weld metal were also compared and discussed.
Lewei Tong +4 more
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Evaluation of Fracture Toughness of Semirigid Asphalt Concretes at Low Temperatures
Transportation Research Record: Journal of the Transportation Research Board, 2011The fracture characteristics of semirigid asphalt concrete (SRAC) prepared from a highly porous asphalt mixture (matrix) with 18% to 22% air voids and cement paste were evaluated. Two asphalt binders and several polymer-modified cement pastes that were grouted into the porous matrix were used.
Sung-Hyun Baek +4 more
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Fracture toughness of polymer-modified asphalt concrete at low temperatures
Canadian Journal of Civil Engineering, 2003The fracture toughness of asphalt concrete increases at low temperature and then decreases at temperatures below a certain level. Some polymers are known to have the property of improving the temperature susceptibility of asphalt binder at low temperatures.
Kwang W Kim +3 more
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Variation of fracture toughness of asphalt concrete under low temperatures
Construction and Building Materials, 1997Abstract This study presents the results of experimental evaluation on fracture toughness of asphalt concrete at various low temperatures (from −5°C to −30°C in 5°C steps). An asphalt cement, penetration grade of 85/100 and two aggregates, a granite and a limestone, were used to prepare asphalt concrete beam specimens which were conditioned using two
Kim, K. W., Elhussein H. Mohamed
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Effect of the low‐temperature relaxation on toughness of cured epoxy resins
Journal of Applied Polymer Science, 1994AbstractThe relation between the magnitude of low‐temperature relaxation and toughness was investigated for epoxy resins cured with some position isomers of naphthalenediols. A well‐defined relaxation was observed near room temperature for a system cured with 2,6‐dihydroxynaphthalene. The relaxation was denoted here as the β′‐relaxation.
Mitsukazu Ochi +3 more
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Low-temperature fracture toughness of a heat-treated mild steel
Journal of Materials Engineering and Performance, 1995Specimens from a 0.14 % C mild steel were austenitized at 1000 °C for 1 h and thereafter furnace-cooled or isothermally transformed at 700 °C for 0.5,2, and 8 h. The microconstituents present in the as-received material were ferrite and pearlite and their amounts did not substantially change even after heat treatment.
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Effect of residual aluminum on impact toughness of steel at low temperatures
Metal Science and Heat Treatment of Metals, 19591. The transitional embrittlement of low carbon steel depends on the contents of aluminum and the ferritic grain size. 2. The higher the rate of cooling of steel from the austenite range, the finer the grain and the lower the tough-to-brittle transition temperature.
E. I. Rabinovich +2 more
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Improvement in low-temperature toughness of poly(vinylchloride) by cocrosslinking with polyethylene
Journal of Polymer Science Part C: Polymer Letters, 1987Diminution de la fragilite de plant du PVC rigide, par coreticulation partielle avec le ...
Yoshoro Nakamura +4 more
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Toughness Tests of Tool Stees for Work at Low Temperature
2018On scrapyard, outside of building, scrap shear with parallel knifes were used to cut large pieces of scrap metal on requested size to fill electric arc furnace. Because of several blades damages and failures, Fig 1, two different steels for blades have been analyzed to increase service life of blades and knifes at low temperature conditions.
Domazet, Željko +2 more
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