417 Characterization of Polymer Composite Dispersed Metal Powder to Utilize for Automobile and Robot

Ebihara, Yoshihide; Kanda, Masae; Kunikyo, Nobuaki; Suenaga, Ryuichi; Ohyama, Ryu-ichiro; Nishi, Yoshitake

doi:10.1299/jsmemp.2009.17._417-1_

Cited by 2 publications

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“…Pd (5 mass%)-Al 2 O 3 powders with 1 to 10 mm in diameter were mixed to the LaNi 5 hydrogen storage alloy powders before dispersing in the polyurethane (PU) solution. [11][12][13] A mover device in a uni-morph structure dispersed with powder hydrogen storage alloy was proposed. Two kinds of polyurethane sheets were prepared in order to construct a bi-metal structure.…”

Section: Sample Preparationmentioning

confidence: 99%

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Giant Bending Strain of Reversible Motion of Uni-Morph Soft Mover Composites Driven by Hydrogen Storage Alloy Powders Dispersed in Polyurethane Sheet

et al. 2009

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In order to generate the bending motion operated by pressure change in hydrogen gas, soft uni-morph composites were prepared, in which composites dispersed with not only driving particles of LaNi 5 hydrogen storage alloy with Pd-Al 2 O 3 catalyst powders to get high responsiveness, were piled up on a simple polyurethane sheet. Since the highest values of irreversible bending strain at the first hydrogenation (" 1) under 0.3 MPa H 2 gas and the maximum irreversible bending strain during hydrogenation cycles (" m) were remarkably obtained at the 35 vol% of LaNi 5 powders dispersed in polyurethane composites, the bending strain of reversible motion was detected from the first to the 8th hydrogenation (" r 1 and " r 8) under 0.2 MPa H 2 gas. The bending strain of reversible motion of polyurethane composites sheet is more than 2000 ppm, which was approximately equal to that of silicone rubber composites and is extremely larger than that (300 ppm) of ABS resin composites. Responsiveness (d"=dt) of cyclic motion of elastic deformed mover composites, which were constructed with 35 vol%LaNi 5 dispersed powder and matrix of polyurethane or silicone rubber, were more than 10 times higher than that of ABS composite.

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Section: Sample Preparationmentioning

confidence: 99%

“…To enhance the stiffness of mover composites rods with the good formability, the polyurethane prepared by solution casting (SC), [11][12][13] is selected in the present paper. It exhibits the high elasticity, as well as high limit value of elastic strain.…”

Section: Introductionmentioning

confidence: 99%

Giant Bending Strain of Reversible Motion of Uni-Morph Soft Mover Composites Driven by Hydrogen Storage Alloy Powders Dispersed in Polyurethane Sheet

et al. 2009

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“…Pd (5 mass%)-Al 2 O 3 powders with 1 to 10 mm in diameter were mixed to the LaNi 5 hydrogen storage alloy powders before dispersing in the polyurethane (PU) solution. [11][12][13] Driving sheet was polyurethane (Estane Company, 58888 NAT 021) composite dispersed with hydrogen storage alloy powders, which was mixed with Pd (5 mass%)-Al 2 O 3 powders to enhance the responsiveness. The driving sheet was prepared by a simple solution cast method.…”

Section: Sample Preparationmentioning

confidence: 99%

“…The polyurethane exhibits the high elasticity, as well as high limit value of elastic strain. In order to enhance the stiffness of mover composites rods, the polyurethane composites dispersed with powders mixture of LaNi 5 hydrogen storage alloy (35 vol% of LaNi 5 ) and Pd-Al 2 O 3 catalyst powders were prepared by solution cast method, [11][12][13] which easily controlled the shape and mixed ratio of the composites. The unimorph (PU+LaNi 5 /PU) sheet constructed with the driving polyurethane composites and pure polyurethane supporting sheet.…”

Section: Introductionmentioning

confidence: 99%

Reversible Bending Motion of Unimorph Composites Driven by Combining LaNi<SUB>5</SUB> Alloy Powders Dispersed Polyurethane and Thin Supporting Copper Sheet under Partial Hydrogen Gas Pressure

et al. 2010

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The polyurethane composites dispersed with powders mixture of LaNi 5 hydrogen storage alloy (35 vol% of LaNi 5 ) and Pd-Al 2 O 3 catalyst powders were prepared by solution cast method, which easily controlled the shape and mixed ratio of the composites. In order to generate the bending strain of reversible up motions at vertical and horizontal directions, the unimorph (PU+LaNi 5 /Cu) sheet constructed with the driving polyurethane composite and supporting copper thin sheet of 10 mm thickness with high specific stiffness (apparent hardening modulus per specific weight) was prepared.Although the bending motion of the unimorph sheet operated by hydrogenation under 0.3 MPa H 2 gas was irreversible, the reversible motion was detected under 0.2 MPa H 2 gas. The maximum strain of reversible bending motion (" max ) of the PU+LaNi 5 /Cu sheet is more than 1520 and 1120 ppm on vertical and horizontal directions, respectively. The " max of the PU+LaNi 5 /Cu sheet at vertical direction was slightly higher than that of the ABS resin unimorph (ABS+LaNi 5 /ABS) sheet constructed with the driving ABS resin composites and pure ABS resin supporting sheet, whereas it was slightly lower than that of the silicone rubber unimorph (SR+LaNi 5 /SR) sheet constructed with the driving silicone rubber composites and pure silicone rubber supporting sheet. It can be estimated that the responsiveness (d"=dt) of cyclic motion of the (PU+LaNi 5 /Cu) sheet is slightly higher than ABS+LaNi 5 /ABS sheet.

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417 Characterization of Polymer Composite Dispersed Metal Powder to Utilize for Automobile and Robot

Cited by 2 publications

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Giant Bending Strain of Reversible Motion of Uni-Morph Soft Mover Composites Driven by Hydrogen Storage Alloy Powders Dispersed in Polyurethane Sheet

Giant Bending Strain of Reversible Motion of Uni-Morph Soft Mover Composites Driven by Hydrogen Storage Alloy Powders Dispersed in Polyurethane Sheet

Reversible Bending Motion of Unimorph Composites Driven by Combining LaNi<SUB>5</SUB> Alloy Powders Dispersed Polyurethane and Thin Supporting Copper Sheet under Partial Hydrogen Gas Pressure

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