Thin-wall injection molding of high-density polyethylene for infrared radiation system lenses
High-density polyethylene (HDPE) lenses are used for infrared radiation (IR) systems, such as radiation thermometers to transmit the IR of the 10 μm region. High IR transmittance and low visible ray (VR) transmittance are necessary for IR system lenses. This experimental investigation of thin-wall i...
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De Gruyter ; 2017 |
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7 |
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Walter de Gruyter Online Zeitschriften |
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Enthalten in: Journal of polymer engineering - Berlin : de Gruyter, 1984, 38(2017), 3 vom: 21. Juli, Seite 307-313 |
| Übergeordnetes Werk: |
volume:38 ; year:2017 ; number:3 ; day:21 ; month:07 ; pages:307-313 ; extent:7 |
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| DOI / URN: |
10.1515/polyeng-2017-0077 |
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| 520 | |a High-density polyethylene (HDPE) lenses are used for infrared radiation (IR) systems, such as radiation thermometers to transmit the IR of the 10 μm region. High IR transmittance and low visible ray (VR) transmittance are necessary for IR system lenses. This experimental investigation of thin-wall injection molding was conducted using 0.5 mm cavity thickness with a disk shape, finished to a mirror-like surface. As factors affecting transmittance, we evaluated the thickness, surface roughness, crystallinity, internal structure, and molecular chain orientation of molded parts, which were produced using four HDPE melt flow rates (MFRs). The changed molding conditions were mold temperature and holding pressure. Results showed that the thin-molded parts had higher IR transmittance. The thin-molded part was obtained with the smallest MFR of 5. Furthermore, the VR transmittance decreased when the molecular chain orientation in the molded parts was small and the crystallinity was high. The small orientation and high crystallinity were obtained simultaneously with the largest MFR of 42. Therefore, it was impossible to obtain high IR transmittance and low VR transmittance simultaneously by a change of MFR. This study confirmed that surface roughness and crystallinity do not affect transmittance. | ||
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| 700 | 1 | |a Hijikata, Motoharu |4 oth | |
| 700 | 1 | |a Ito, Hiroshi |4 oth | |
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10.1515/polyeng-2017-0077 doi articles2015-2020.pp (DE-627)NLEJ248142593 DE-627 ger DE-627 rakwb Thin-wall injection molding of high-density polyethylene for infrared radiation system lenses De Gruyter 2017 7 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier High-density polyethylene (HDPE) lenses are used for infrared radiation (IR) systems, such as radiation thermometers to transmit the IR of the 10 μm region. High IR transmittance and low visible ray (VR) transmittance are necessary for IR system lenses. This experimental investigation of thin-wall injection molding was conducted using 0.5 mm cavity thickness with a disk shape, finished to a mirror-like surface. As factors affecting transmittance, we evaluated the thickness, surface roughness, crystallinity, internal structure, and molecular chain orientation of molded parts, which were produced using four HDPE melt flow rates (MFRs). The changed molding conditions were mold temperature and holding pressure. Results showed that the thin-molded parts had higher IR transmittance. The thin-molded part was obtained with the smallest MFR of 5. Furthermore, the VR transmittance decreased when the molecular chain orientation in the molded parts was small and the crystallinity was high. The small orientation and high crystallinity were obtained simultaneously with the largest MFR of 42. Therefore, it was impossible to obtain high IR transmittance and low VR transmittance simultaneously by a change of MFR. This study confirmed that surface roughness and crystallinity do not affect transmittance. Walter de Gruyter Online Zeitschriften injection molding molecular chain orientation morphology optical property semi-crystalline polymer Kaneda, Ryo oth Takahashi, Toshihiro oth Takiguchi, Masayasu oth Hijikata, Motoharu oth Ito, Hiroshi oth Enthalten in Journal of polymer engineering Berlin : de Gruyter, 1984 38(2017), 3 vom: 21. Juli, Seite 307-313 (DE-627)NLEJ248236601 (DE-600)2602430-5 2191-0340 nnns volume:38 year:2017 number:3 day:21 month:07 pages:307-313 extent:7 https://doi.org/10.1515/polyeng-2017-0077 Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-DGR GBV_NL_ARTICLE AR 38 2017 3 21 7 307-313 7 |
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10.1515/polyeng-2017-0077 doi articles2015-2020.pp (DE-627)NLEJ248142593 DE-627 ger DE-627 rakwb Thin-wall injection molding of high-density polyethylene for infrared radiation system lenses De Gruyter 2017 7 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier High-density polyethylene (HDPE) lenses are used for infrared radiation (IR) systems, such as radiation thermometers to transmit the IR of the 10 μm region. High IR transmittance and low visible ray (VR) transmittance are necessary for IR system lenses. This experimental investigation of thin-wall injection molding was conducted using 0.5 mm cavity thickness with a disk shape, finished to a mirror-like surface. As factors affecting transmittance, we evaluated the thickness, surface roughness, crystallinity, internal structure, and molecular chain orientation of molded parts, which were produced using four HDPE melt flow rates (MFRs). The changed molding conditions were mold temperature and holding pressure. Results showed that the thin-molded parts had higher IR transmittance. The thin-molded part was obtained with the smallest MFR of 5. Furthermore, the VR transmittance decreased when the molecular chain orientation in the molded parts was small and the crystallinity was high. The small orientation and high crystallinity were obtained simultaneously with the largest MFR of 42. Therefore, it was impossible to obtain high IR transmittance and low VR transmittance simultaneously by a change of MFR. This study confirmed that surface roughness and crystallinity do not affect transmittance. Walter de Gruyter Online Zeitschriften injection molding molecular chain orientation morphology optical property semi-crystalline polymer Kaneda, Ryo oth Takahashi, Toshihiro oth Takiguchi, Masayasu oth Hijikata, Motoharu oth Ito, Hiroshi oth Enthalten in Journal of polymer engineering Berlin : de Gruyter, 1984 38(2017), 3 vom: 21. Juli, Seite 307-313 (DE-627)NLEJ248236601 (DE-600)2602430-5 2191-0340 nnns volume:38 year:2017 number:3 day:21 month:07 pages:307-313 extent:7 https://doi.org/10.1515/polyeng-2017-0077 Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-DGR GBV_NL_ARTICLE AR 38 2017 3 21 7 307-313 7 |
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10.1515/polyeng-2017-0077 doi articles2015-2020.pp (DE-627)NLEJ248142593 DE-627 ger DE-627 rakwb Thin-wall injection molding of high-density polyethylene for infrared radiation system lenses De Gruyter 2017 7 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier High-density polyethylene (HDPE) lenses are used for infrared radiation (IR) systems, such as radiation thermometers to transmit the IR of the 10 μm region. High IR transmittance and low visible ray (VR) transmittance are necessary for IR system lenses. This experimental investigation of thin-wall injection molding was conducted using 0.5 mm cavity thickness with a disk shape, finished to a mirror-like surface. As factors affecting transmittance, we evaluated the thickness, surface roughness, crystallinity, internal structure, and molecular chain orientation of molded parts, which were produced using four HDPE melt flow rates (MFRs). The changed molding conditions were mold temperature and holding pressure. Results showed that the thin-molded parts had higher IR transmittance. The thin-molded part was obtained with the smallest MFR of 5. Furthermore, the VR transmittance decreased when the molecular chain orientation in the molded parts was small and the crystallinity was high. The small orientation and high crystallinity were obtained simultaneously with the largest MFR of 42. Therefore, it was impossible to obtain high IR transmittance and low VR transmittance simultaneously by a change of MFR. This study confirmed that surface roughness and crystallinity do not affect transmittance. Walter de Gruyter Online Zeitschriften injection molding molecular chain orientation morphology optical property semi-crystalline polymer Kaneda, Ryo oth Takahashi, Toshihiro oth Takiguchi, Masayasu oth Hijikata, Motoharu oth Ito, Hiroshi oth Enthalten in Journal of polymer engineering Berlin : de Gruyter, 1984 38(2017), 3 vom: 21. Juli, Seite 307-313 (DE-627)NLEJ248236601 (DE-600)2602430-5 2191-0340 nnns volume:38 year:2017 number:3 day:21 month:07 pages:307-313 extent:7 https://doi.org/10.1515/polyeng-2017-0077 Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-DGR GBV_NL_ARTICLE AR 38 2017 3 21 7 307-313 7 |
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10.1515/polyeng-2017-0077 doi articles2015-2020.pp (DE-627)NLEJ248142593 DE-627 ger DE-627 rakwb Thin-wall injection molding of high-density polyethylene for infrared radiation system lenses De Gruyter 2017 7 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier High-density polyethylene (HDPE) lenses are used for infrared radiation (IR) systems, such as radiation thermometers to transmit the IR of the 10 μm region. High IR transmittance and low visible ray (VR) transmittance are necessary for IR system lenses. This experimental investigation of thin-wall injection molding was conducted using 0.5 mm cavity thickness with a disk shape, finished to a mirror-like surface. As factors affecting transmittance, we evaluated the thickness, surface roughness, crystallinity, internal structure, and molecular chain orientation of molded parts, which were produced using four HDPE melt flow rates (MFRs). The changed molding conditions were mold temperature and holding pressure. Results showed that the thin-molded parts had higher IR transmittance. The thin-molded part was obtained with the smallest MFR of 5. Furthermore, the VR transmittance decreased when the molecular chain orientation in the molded parts was small and the crystallinity was high. The small orientation and high crystallinity were obtained simultaneously with the largest MFR of 42. Therefore, it was impossible to obtain high IR transmittance and low VR transmittance simultaneously by a change of MFR. This study confirmed that surface roughness and crystallinity do not affect transmittance. Walter de Gruyter Online Zeitschriften injection molding molecular chain orientation morphology optical property semi-crystalline polymer Kaneda, Ryo oth Takahashi, Toshihiro oth Takiguchi, Masayasu oth Hijikata, Motoharu oth Ito, Hiroshi oth Enthalten in Journal of polymer engineering Berlin : de Gruyter, 1984 38(2017), 3 vom: 21. Juli, Seite 307-313 (DE-627)NLEJ248236601 (DE-600)2602430-5 2191-0340 nnns volume:38 year:2017 number:3 day:21 month:07 pages:307-313 extent:7 https://doi.org/10.1515/polyeng-2017-0077 Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-DGR GBV_NL_ARTICLE AR 38 2017 3 21 7 307-313 7 |
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10.1515/polyeng-2017-0077 doi articles2015-2020.pp (DE-627)NLEJ248142593 DE-627 ger DE-627 rakwb Thin-wall injection molding of high-density polyethylene for infrared radiation system lenses De Gruyter 2017 7 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier High-density polyethylene (HDPE) lenses are used for infrared radiation (IR) systems, such as radiation thermometers to transmit the IR of the 10 μm region. High IR transmittance and low visible ray (VR) transmittance are necessary for IR system lenses. This experimental investigation of thin-wall injection molding was conducted using 0.5 mm cavity thickness with a disk shape, finished to a mirror-like surface. As factors affecting transmittance, we evaluated the thickness, surface roughness, crystallinity, internal structure, and molecular chain orientation of molded parts, which were produced using four HDPE melt flow rates (MFRs). The changed molding conditions were mold temperature and holding pressure. Results showed that the thin-molded parts had higher IR transmittance. The thin-molded part was obtained with the smallest MFR of 5. Furthermore, the VR transmittance decreased when the molecular chain orientation in the molded parts was small and the crystallinity was high. The small orientation and high crystallinity were obtained simultaneously with the largest MFR of 42. Therefore, it was impossible to obtain high IR transmittance and low VR transmittance simultaneously by a change of MFR. This study confirmed that surface roughness and crystallinity do not affect transmittance. Walter de Gruyter Online Zeitschriften injection molding molecular chain orientation morphology optical property semi-crystalline polymer Kaneda, Ryo oth Takahashi, Toshihiro oth Takiguchi, Masayasu oth Hijikata, Motoharu oth Ito, Hiroshi oth Enthalten in Journal of polymer engineering Berlin : de Gruyter, 1984 38(2017), 3 vom: 21. Juli, Seite 307-313 (DE-627)NLEJ248236601 (DE-600)2602430-5 2191-0340 nnns volume:38 year:2017 number:3 day:21 month:07 pages:307-313 extent:7 https://doi.org/10.1515/polyeng-2017-0077 Deutschlandweit zugänglich GBV_USEFLAG_U ZDB-1-DGR GBV_NL_ARTICLE AR 38 2017 3 21 7 307-313 7 |
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thin-wall injection molding of high-density polyethylene for infrared radiation system lenses |
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Thin-wall injection molding of high-density polyethylene for infrared radiation system lenses |
| abstract |
High-density polyethylene (HDPE) lenses are used for infrared radiation (IR) systems, such as radiation thermometers to transmit the IR of the 10 μm region. High IR transmittance and low visible ray (VR) transmittance are necessary for IR system lenses. This experimental investigation of thin-wall injection molding was conducted using 0.5 mm cavity thickness with a disk shape, finished to a mirror-like surface. As factors affecting transmittance, we evaluated the thickness, surface roughness, crystallinity, internal structure, and molecular chain orientation of molded parts, which were produced using four HDPE melt flow rates (MFRs). The changed molding conditions were mold temperature and holding pressure. Results showed that the thin-molded parts had higher IR transmittance. The thin-molded part was obtained with the smallest MFR of 5. Furthermore, the VR transmittance decreased when the molecular chain orientation in the molded parts was small and the crystallinity was high. The small orientation and high crystallinity were obtained simultaneously with the largest MFR of 42. Therefore, it was impossible to obtain high IR transmittance and low VR transmittance simultaneously by a change of MFR. This study confirmed that surface roughness and crystallinity do not affect transmittance. |
| abstractGer |
High-density polyethylene (HDPE) lenses are used for infrared radiation (IR) systems, such as radiation thermometers to transmit the IR of the 10 μm region. High IR transmittance and low visible ray (VR) transmittance are necessary for IR system lenses. This experimental investigation of thin-wall injection molding was conducted using 0.5 mm cavity thickness with a disk shape, finished to a mirror-like surface. As factors affecting transmittance, we evaluated the thickness, surface roughness, crystallinity, internal structure, and molecular chain orientation of molded parts, which were produced using four HDPE melt flow rates (MFRs). The changed molding conditions were mold temperature and holding pressure. Results showed that the thin-molded parts had higher IR transmittance. The thin-molded part was obtained with the smallest MFR of 5. Furthermore, the VR transmittance decreased when the molecular chain orientation in the molded parts was small and the crystallinity was high. The small orientation and high crystallinity were obtained simultaneously with the largest MFR of 42. Therefore, it was impossible to obtain high IR transmittance and low VR transmittance simultaneously by a change of MFR. This study confirmed that surface roughness and crystallinity do not affect transmittance. |
| abstract_unstemmed |
High-density polyethylene (HDPE) lenses are used for infrared radiation (IR) systems, such as radiation thermometers to transmit the IR of the 10 μm region. High IR transmittance and low visible ray (VR) transmittance are necessary for IR system lenses. This experimental investigation of thin-wall injection molding was conducted using 0.5 mm cavity thickness with a disk shape, finished to a mirror-like surface. As factors affecting transmittance, we evaluated the thickness, surface roughness, crystallinity, internal structure, and molecular chain orientation of molded parts, which were produced using four HDPE melt flow rates (MFRs). The changed molding conditions were mold temperature and holding pressure. Results showed that the thin-molded parts had higher IR transmittance. The thin-molded part was obtained with the smallest MFR of 5. Furthermore, the VR transmittance decreased when the molecular chain orientation in the molded parts was small and the crystallinity was high. The small orientation and high crystallinity were obtained simultaneously with the largest MFR of 42. Therefore, it was impossible to obtain high IR transmittance and low VR transmittance simultaneously by a change of MFR. This study confirmed that surface roughness and crystallinity do not affect transmittance. |
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Thin-wall injection molding of high-density polyethylene for infrared radiation system lenses |
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https://doi.org/10.1515/polyeng-2017-0077 |
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Kaneda, Ryo Takahashi, Toshihiro Takiguchi, Masayasu Hijikata, Motoharu Ito, Hiroshi |
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Kaneda, Ryo Takahashi, Toshihiro Takiguchi, Masayasu Hijikata, Motoharu Ito, Hiroshi |
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10.1515/polyeng-2017-0077 |
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