The Experts below are selected from a list of 84 Experts worldwide ranked by ideXlab platform
Honghai Zhang - One of the best experts on this subject based on the ideXlab platform.
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Investigation on urea-formaldehyde resin as an in-Powder Adhesive for the fabrication of Al2O3/borosilicate–glass composite parts by three dimensional printing (3DP)
Journal of Materials Processing Technology, 2015Co-Authors: Shu Cao, Xing-fang Wei, Zhen-jun Sun, Honghai ZhangAbstract:Abstract Using Adhesive to bond Powdered material is the foundation of three dimensional printing (3DP), which necessitates the need for addressing problems with current 3DP Adhesives, such as printhead blockage and complicated material preparation processes. To solve such problems, this paper introduces a novel in-Powder Adhesive of urea-formaldehyde (UF) resin, which can improve 3DP primarily via its high bonding strength, convenient material preparation and Adhesive-free printing liquid. A self-developed 3DP machine tailored for this new Adhesive, which features a low-cost commercial piezoelectric printhead, is also presented. A feasibility study was conducted with UF resin as the in-Powder Adhesive for 3DP fabrication of high-performance alumina/borosilicate–glass composites. Furthermore, the measurements taken throughout fabrication revealed that a double-smoothing (DS) layering method, capable of dispensing intact and thinner Powder layers, resulted in better specimen properties. The Al 2 O 3 green specimens obtained maximum tensile strength and flexural strength values of 9.5 MPa and 14.6 MPa, respectively. The green specimens were then sintered and infiltrated with borosilicate glass to form alumina/borosilicate–glass composites, which exhibited maximum values for tensile strength, flexural strength, compressive strength, Young's modulus, Vickers hardness and fracture toughness of 86.7 MPa, 200.7 MPa, 1503.4 MPa, 278.7 GPa, 14.1 GPa and 4.2 MPa m 1/2 , respectively. The composite also exhibited a low coefficient of thermal expansion (CTE) of 4.6 × 10 −6 °C −1 . For demonstrational purposes, such composites, as rapid tools and functional parts, were also printed to show the technological potential in engineering applications.
Shu Cao - One of the best experts on this subject based on the ideXlab platform.
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Investigation on urea-formaldehyde resin as an in-Powder Adhesive for the fabrication of Al2O3/borosilicate–glass composite parts by three dimensional printing (3DP)
Journal of Materials Processing Technology, 2015Co-Authors: Shu Cao, Xing-fang Wei, Zhen-jun Sun, Honghai ZhangAbstract:Abstract Using Adhesive to bond Powdered material is the foundation of three dimensional printing (3DP), which necessitates the need for addressing problems with current 3DP Adhesives, such as printhead blockage and complicated material preparation processes. To solve such problems, this paper introduces a novel in-Powder Adhesive of urea-formaldehyde (UF) resin, which can improve 3DP primarily via its high bonding strength, convenient material preparation and Adhesive-free printing liquid. A self-developed 3DP machine tailored for this new Adhesive, which features a low-cost commercial piezoelectric printhead, is also presented. A feasibility study was conducted with UF resin as the in-Powder Adhesive for 3DP fabrication of high-performance alumina/borosilicate–glass composites. Furthermore, the measurements taken throughout fabrication revealed that a double-smoothing (DS) layering method, capable of dispensing intact and thinner Powder layers, resulted in better specimen properties. The Al 2 O 3 green specimens obtained maximum tensile strength and flexural strength values of 9.5 MPa and 14.6 MPa, respectively. The green specimens were then sintered and infiltrated with borosilicate glass to form alumina/borosilicate–glass composites, which exhibited maximum values for tensile strength, flexural strength, compressive strength, Young's modulus, Vickers hardness and fracture toughness of 86.7 MPa, 200.7 MPa, 1503.4 MPa, 278.7 GPa, 14.1 GPa and 4.2 MPa m 1/2 , respectively. The composite also exhibited a low coefficient of thermal expansion (CTE) of 4.6 × 10 −6 °C −1 . For demonstrational purposes, such composites, as rapid tools and functional parts, were also printed to show the technological potential in engineering applications.
S.w. Lye - One of the best experts on this subject based on the ideXlab platform.
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Powder Adhesive moulding of recycled expandable polystyrene
Plastics Rubber and Composites, 2003Co-Authors: S.w. LyeAbstract:Expandable polystyrene (EPS) has been used in numerous and varied applications. Its products are commonly made via the steam injection moulding process. This paper discusses a new process approach using ground recycled EPS mixed with Powder Adhesive to produce the specimens. Adopting the design of experiment approach, the amount of recycled EPS was found to be the most significant controlling parameter for this process. The optimal process conditions and empirical relationships for good bead fusion were also established and the specimens derived were found to be good and comparable with those of steam injected moulded ones. Common causes of failures were also identified.
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Adhesives for bead fusion of recycled expandable polystyrene
Journal of Applied Polymer Science, 2002Co-Authors: S.w. Lye, S. G. LeeAbstract:Expandable polystyrene (EPS) is a plastic cellular material that is commonly used in the packaging industry. Its growing uses have led to environmental concerns over resource sustainability and the dwindling availability of landfill spaces. Although existing approaches to control and manage EPS wastes are available, much effort is still needed to recycle as much of the used materials via developing new processes or applications. This article looks into a new approach using Adhesives to promote EPS bead fusion. Two sets of test specimens made of 100% recycled EPS using spray Adhesive and Powder Adhesive were investigated. Their mechanical behaviors of these two Adhesive EPS samples were studied. These specimens were compared with the commercially available ones produced using steam injection molding and direct microwave molding. From the findings, the Powder Adhesive specimens were found to be quite comparable to the steam-injected ones in terms of better cushioning property, shape definitions, smaller dimensional and density variations than those of sprayed Adhesive and microwave ones. The results highlight that Powder Adhesive mixed with 100% recycled EPS offer a new “green” approach in EPS production with low initial capital outlay and shorter production lead time. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 86: 456–462, 2002
Zhen-jun Sun - One of the best experts on this subject based on the ideXlab platform.
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Investigation on urea-formaldehyde resin as an in-Powder Adhesive for the fabrication of Al2O3/borosilicate–glass composite parts by three dimensional printing (3DP)
Journal of Materials Processing Technology, 2015Co-Authors: Shu Cao, Xing-fang Wei, Zhen-jun Sun, Honghai ZhangAbstract:Abstract Using Adhesive to bond Powdered material is the foundation of three dimensional printing (3DP), which necessitates the need for addressing problems with current 3DP Adhesives, such as printhead blockage and complicated material preparation processes. To solve such problems, this paper introduces a novel in-Powder Adhesive of urea-formaldehyde (UF) resin, which can improve 3DP primarily via its high bonding strength, convenient material preparation and Adhesive-free printing liquid. A self-developed 3DP machine tailored for this new Adhesive, which features a low-cost commercial piezoelectric printhead, is also presented. A feasibility study was conducted with UF resin as the in-Powder Adhesive for 3DP fabrication of high-performance alumina/borosilicate–glass composites. Furthermore, the measurements taken throughout fabrication revealed that a double-smoothing (DS) layering method, capable of dispensing intact and thinner Powder layers, resulted in better specimen properties. The Al 2 O 3 green specimens obtained maximum tensile strength and flexural strength values of 9.5 MPa and 14.6 MPa, respectively. The green specimens were then sintered and infiltrated with borosilicate glass to form alumina/borosilicate–glass composites, which exhibited maximum values for tensile strength, flexural strength, compressive strength, Young's modulus, Vickers hardness and fracture toughness of 86.7 MPa, 200.7 MPa, 1503.4 MPa, 278.7 GPa, 14.1 GPa and 4.2 MPa m 1/2 , respectively. The composite also exhibited a low coefficient of thermal expansion (CTE) of 4.6 × 10 −6 °C −1 . For demonstrational purposes, such composites, as rapid tools and functional parts, were also printed to show the technological potential in engineering applications.
Xing-fang Wei - One of the best experts on this subject based on the ideXlab platform.
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Investigation on urea-formaldehyde resin as an in-Powder Adhesive for the fabrication of Al2O3/borosilicate–glass composite parts by three dimensional printing (3DP)
Journal of Materials Processing Technology, 2015Co-Authors: Shu Cao, Xing-fang Wei, Zhen-jun Sun, Honghai ZhangAbstract:Abstract Using Adhesive to bond Powdered material is the foundation of three dimensional printing (3DP), which necessitates the need for addressing problems with current 3DP Adhesives, such as printhead blockage and complicated material preparation processes. To solve such problems, this paper introduces a novel in-Powder Adhesive of urea-formaldehyde (UF) resin, which can improve 3DP primarily via its high bonding strength, convenient material preparation and Adhesive-free printing liquid. A self-developed 3DP machine tailored for this new Adhesive, which features a low-cost commercial piezoelectric printhead, is also presented. A feasibility study was conducted with UF resin as the in-Powder Adhesive for 3DP fabrication of high-performance alumina/borosilicate–glass composites. Furthermore, the measurements taken throughout fabrication revealed that a double-smoothing (DS) layering method, capable of dispensing intact and thinner Powder layers, resulted in better specimen properties. The Al 2 O 3 green specimens obtained maximum tensile strength and flexural strength values of 9.5 MPa and 14.6 MPa, respectively. The green specimens were then sintered and infiltrated with borosilicate glass to form alumina/borosilicate–glass composites, which exhibited maximum values for tensile strength, flexural strength, compressive strength, Young's modulus, Vickers hardness and fracture toughness of 86.7 MPa, 200.7 MPa, 1503.4 MPa, 278.7 GPa, 14.1 GPa and 4.2 MPa m 1/2 , respectively. The composite also exhibited a low coefficient of thermal expansion (CTE) of 4.6 × 10 −6 °C −1 . For demonstrational purposes, such composites, as rapid tools and functional parts, were also printed to show the technological potential in engineering applications.