scholarly journals Fiber Morphological Properties of Three Promising Abaca (Musa textilis Nee) Cultivars

2013 ◽  
Vol 10 (1) ◽  
pp. 83-97
Author(s):  
Luz Moreno ◽  
Keyword(s):  
Tensile Strength ◽  
Fiber Quality ◽  
Germplasm Collection ◽  
Pulp And Paper ◽  
Morphological Properties ◽  
Cell Diameter ◽  
Low Grade ◽  
High Tensile Strength ◽  
Paper Production ◽  
Very High

The fiber morphological properties of three promising abaca (Musa textilis Nee) cultivars found in the abaca germplasm collection of the National Abaca Research Center were investigated to assess their suitability for pulp and paper production. It was found that Inosa produced the longest fibers (4.58mm) followed by Laylay (3.43mm), while Gomez hybrid had the shortest (2.45mm). The three cultivars did not vary in fiber cell diameter, lumen width and cell wall thickness. Tensile strength of Inosa was highest at 84.68 cN/tex compared to Laylay (69.27 cN/tex) while Gomez hybrid had the lowest at 25.65 cN/tex). The very high tensile strength of Inosa as well as its high slenderness and runkel ratios make it very suitable for the production of high quality pulp and paper. Slenderness and runkel ratios of the Gomez hybrid were the lowest while its flexibility ratio was the highest indicating poop fiber quality. Such properties, however, still make its fibers acceptable for low-grade pulp and paper products such as newsprint paper production.

Mechanical Properties of a β Containing Ti-Al-Cr-Alloy at Ambient and Elevated Temperatures

1994 ◽  
Vol 364 ◽  
Author(s):  
W. R. Chen ◽  
J. Wang ◽  
B. Zhang ◽  
X. Wan ◽  
W. J. Chen
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Ambient Temperature ◽  
Strain Rate ◽  
Temperature Dependence ◽  
Elevated Temperatures ◽  
High Tensile Strength ◽  
Tial Alloys ◽  
Β Phase ◽  
Very High

AbstractThe mechanical properties of a β-containing Ti-Al-Cr alloy were investigated at ambient and elevated temperatures. The results show that the Ti-Al-Cr alloy containing the β phase has a very high tensile strength but a poor ductility at ambient temperature, and that higher ductility is obtained at high temperatures. The temperature dependence of mechanical properties is found to be sensitive to the strain rate during the test. Fractography shows that the fracture mode changes from fully brittle to ductile-brittle mixture with the increased temperature. All the results suggest that the triple-phased TiAl alloys (α2+β+γ) may have the combined mechanical properties of the dual-phased T13Al ((α2+β) and dual-phased TiAl (α2+γ) alloys.

Polymerization of Ethylene with Propylene by Soluble Titanium (III) Catalyst

1990 ◽  
Vol 63 (5) ◽  
pp. 713-721
Author(s):  
Kenya Makino ◽  
I. Hattori ◽  
M. Watanabe
Keyword(s):  
Tensile Strength ◽  
Catalytic Activity ◽  
Metal Chloride ◽  
High Tensile Strength ◽  
Elongation At Break ◽  
Hydrocarbon Solvent ◽  
Catalytic Activities ◽  
Halogenated Hydrocarbon ◽  
Very High ◽  
Low Crystallinity

Abstract Soluble TiCl3 complex catalysts were prepared by reduction of TiCl4 with hydrogen in the presence of Pd-carbon and ether in a halogenated hydrocarbon solvent. When copolymerization of ethylene with propylene was carried out with the soluble TiCl3 catalysts, the catalytic activities were very high, and copolymers obtained showed low crystallinity. When a small amount of a metal chloride was added to the soluble TiCl3 catalysts, it was found that the catalytic activity increased and the crystallinity of copolymers obtained was lower compared with those of the copolymers prepared by the original soluble TiCl3 catalysts. The copolymers obtained by the soluble TiCl3 catalysts showed high tensile strength (TB) and elongation at break (EB). From these results, it is concluded that the large values of TB and EB are caused from the microblock sequences of ethylene.

Properties of HDPE/Biodegradable Polymer Blends Using Modified Rubber

2017 ◽  
Vol 873 ◽  
pp. 101-106 ◽  
Author(s):  
Chanon Wiphanurat ◽  
Pran Hanthanon ◽  
Thiti Kaisone ◽  
Rathanawan Magaraphan ◽  
Tarinee Nampitch
Keyword(s):  
Tensile Strength ◽  
Polymer Blends ◽  
Biodegradable Polymer ◽  
Tensile Tests ◽  
Morphological Properties ◽  
Poly Lactic Acid ◽  
High Tensile Strength ◽  
Elongation At Break ◽  
Compatibilization Effect ◽  
Scanning Electron

Biodegradable blends consisting of poly(lactic acid) (PLA), poly(butylene adipate-coterephthalate) (PBAT) and epoxidized natural rubber (ENR) were blended in two proportions at PLA/PBAT/ENR ratios of 70/10/20 and 70/20/10. Then, blends these biodegradable polymers (PLA/PBAT/ENR) with HDPE at various ratios of 20/80, 10/90 and 5/95 wt%, the mechanical and morphological properties were investigated. Tensile tests of PLA/PBAT/ENR blends revealed high tensile strength and modulus but low elongation compared with HDPE. The tensile strength, elongation at break and impact strength of HDPE/biodegradable polymer blends decreased with increasing biodegradable polymer contents. Morphological properties of HDPE/biodegradable polymer blends were investigated by scanning electron microscope, which showed smoother surface of HDPE/biodegradable (70/10/20) than those of (70/20/10) polymer blends according to ENR compatibilization effect.

DURIMPHY

Alloy Digest ◽  
2007 ◽  
Vol 56 (2) ◽  
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
Yield Strength ◽  
Physical Properties ◽  
Precipitation Hardening ◽  
Heat Treating ◽  
High Yield ◽  
High Yield Strength ◽  
Precision Alloys ◽  
Very High

Abstract Durimphy is a maraging steel with 1724 MPa (250 ksi) tensile strength and a very high yield strength due to precipitation hardening. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: FE-140. Producer or source: Metalimphy Precision Alloys.

LUCEFIN GROUP C30 (1.0528), C30E (1.1178), C30R (1.1179)

Alloy Digest ◽  
2020 ◽  
Vol 69 (9) ◽  
Keyword(s):  
Tensile Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Tensile Strength ◽  
Medium Carbon ◽  
Alloy Steels ◽  
Cold Worked ◽  
Lower Carbon

Abstract Lucefin Group C30, C30E, and C30R are medium-carbon, non-alloy steels that are used in the normalized, cold worked, or quenched and tempered condition. C30E and C30R may also be flame or induction hardened. C30, C30E, and C30R are widely used for small, moderately stressed parts, where higher strength levels are needed than can be achieved in the lower carbon grades, and also where toughness is more important than high tensile strength. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: CS-206. Producer or source: Lucefin S.p.A.

KAISER ALUMINUM ALLOY 7050

Alloy Digest ◽  
2000 ◽  
Vol 49 (1) ◽  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Tensile Strength ◽  
Aluminum Alloy ◽  
Heat Treating ◽  
High Fracture Toughness ◽  
High Fracture ◽  
Kaiser Aluminum ◽  
Structural Parts ◽  
Very High

Abstract Kaiser Aluminum Alloy 7050 has very high mechanical properties including tensile strength, high fracture toughness, and a high resistance to exfoliation and stress-corrosion cracking. The alloy is typically used in aircraft structural parts. This datasheet provides information on composition, physical properties, hardness, tensile properties, and shear strength as well as fracture toughness and fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: AL-366. Producer or source: Tennalum, A Division of Kaiser Aluminum.

VASCO 9-4-20

Alloy Digest ◽  
1997 ◽  
Vol 46 (10) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Strength ◽  
High Temperature ◽  
Ultimate Tensile Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Tensile Strength ◽  
Temperature Performance

Abstract Vasco 9-4-20 (0.20 wt% C) is a premium quality aircraft steel that combines high tensile strength with good fracture toughness. It is a heat-treatable alloy capable of developing an ultimate tensile strength greater than 190 ksi. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as heat treating, machining, and joining. Filing Code: SA-489. Producer or source: Vasco, An Allegheny Teledyne Company.

USS STRUX

Alloy Digest ◽  
1960 ◽  
Vol 9 (7) ◽  
Keyword(s):  
United States ◽  
Tensile Strength ◽  
High Strength ◽  
Notch Toughness ◽  
United States Steel Corporation ◽  
Treated Condition ◽  
High Strength Level ◽  
Heat Treated ◽  
Heat Treated Condition ◽  
Very High

Abstract USS STRUX is an alloy steel designed for use in the heat treated condition at a minimum tensile strength of 280,000 psi. At this very high strength level the steel has adequate ductility and notch toughness for critical applications. This datasheet provides information on composition and tensile properties. Filing Code: SA-100. Producer or source: United States Steel Corporation.

NJZ ALLOY No. 55

Alloy Digest ◽  
1976 ◽  
Vol 25 (12) ◽  
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
New Jersey ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Tensile Strength ◽  
High Stiffness ◽  
Zinc Cadmium ◽  
Forming Characteristics

Abstract NJZ Alloy No. 55 is a zinc-cadmium alloy characterized by high tensile strength and hardness but low ductility. It has high stiffness and resiliency but low drawing and forming characteristics. Its applications include hardware and medallions. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as creep and fatigue. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, and joining. Filing Code: Zn-30. Producer or source: New Jersey Zinc Company.

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