著者

佐藤 祐輔

出版者

一般社団法人 プラスチック成形加工学会

雑誌

成形加工 (ISSN:09154027)

巻号頁・発行日

vol.24, no.4, pp.196-199, 2012-03-20 (Released:2020-12-25)

被引用文献数

1

著者

山本 洋之 大久保 雄司 小川 一文 内海 邦広

出版者

一般社団法人 プラスチック成形加工学会

雑誌

成形加工 (ISSN:09154027)

巻号頁・発行日

vol.22, no.2, pp.104-114, 2010

被引用文献数

3

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In this study, the physical performance (adhesion resistance, heat resistance, abrasion resistance, chemical resistance) extremely thin, highly durable and chemically adsorbed fluorocarbon film with low surface energy on the metal surface (the thickness is about 1 nm order.) was evaluated, and the evaluation results (durability, demolding resistance) on the actual injection molding performance up to 100,000 shots using a test mold were reported. <BR>The demolding resistance could be drastically decreased without losing the mold shape and dimensional accuracy by using the chemically adsorbed and highly durable fluorocarbon film.<BR>From these results, this technique should be useful for molding various elastomers such as silicone and urethane resin which are difficult to release from a mold for making high precision products such as optical components and chemical chips.

著者

工藤 素 村田 健司 鎌田 悟 濱田 文男

出版者

一般社団法人 プラスチック成形加工学会

雑誌

成形加工 (ISSN:09154027)

巻号頁・発行日

vol.21, no.3, pp.153-160, 2009 (Released:2010-01-06)

参考文献数

14

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In this paper, a new aerial shell made of biodegradable plastics was developed and explosion tests were carried out using 2.5-10 gou-size firework aerial shells at a ground test site in order to observe the fragmentation. The dispersed fragments were then collected and their size and distribution measured. In order to monitor the fragmentation visually, a high-speed camera was used to film the ignition of the bursting charge and the scattering of the shell fragments. The shell fragments became much smaller, because mechanical properties of biodegradable plastics that were added improved polyvinyl alcohol (PVA) and chaff powder (CP). Fibrillation was seen in PBS/PVA/CP, and it seemed effective for mechanical properties. As a result, safer aerial shells which disperse into smaller fragments on explosion were successfully developed.

著者

山本 智

出版者

一般社団法人 プラスチック成形加工学会

雑誌

成形加工 (ISSN:09154027)

巻号頁・発行日

vol.17, no.4, pp.250-257, 2005-04-20 (Released:2021-03-26)

参考文献数

26

被引用文献数

1

著者

椋田 宗明

出版者

一般社団法人 プラスチック成形加工学会

雑誌

成形加工 (ISSN:09154027)

巻号頁・発行日

vol.25, no.10, pp.460, 2013-09-20 (Released:2020-12-25)

著者

田口 宏之

出版者

一般社団法人 プラスチック成形加工学会

雑誌

成形加工 (ISSN:09154027)

巻号頁・発行日

vol.31, no.4, pp.142-145, 2019-03-20 (Released:2020-11-30)

参考文献数

6

著者

中山 喜萬

出版者

一般社団法人 プラスチック成形加工学会

雑誌

成形加工 (ISSN:09154027)

巻号頁・発行日

vol.29, no.3, pp.82-86, 2017-02-20 (Released:2020-09-10)

参考文献数

16

著者

木村 照夫 井野 晴洋 西田 優一 青山 尚樹 柴田 勝司

出版者

一般社団法人 プラスチック成形加工学会

雑誌

成形加工 (ISSN:09154027)

巻号頁・発行日

vol.22, no.3, pp.153-159, 2010 (Released:2010-07-24)

参考文献数

5

被引用文献数

2 2

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This study investigated a compression molding method of carbon fiber reinforced thermoplastics (CFRTP) made of carbon fiber extracted from CFRP waste. The short carbon fibers were mixed with polyester fibers using a papermaking method to make the preform sheet of compression molding. The waste obtained from a textile water jet loom was used as a matrix material. The setting speed of each fiber during the papermaking process was regulated by using a dispersing agent to obtain the good dispersion of each fiber. Laminated preform sheets combined with polyester fibers and carbon fibers were compressed with heating at 300 ℃ and then the polyester fiber was melted as a matrix material. It was cleared from the experimental results that the mechanical properties of molded CFRTP largely depends on both the fiber dispersion and the content of carbon fiber in the preform.

著者

水谷 治靖 小泉 順二 奥本 忠興

出版者

一般社団法人 プラスチック成形加工学会

雑誌

成形加工 (ISSN:09154027)

巻号頁・発行日

vol.6, no.6, pp.426-433, 1994-06-20 (Released:2009-11-18)

参考文献数

7

被引用文献数

1

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In the injection molded parts of glass fiber reinforced PP (PPG), the increase of fiber content to improve the mechanical properties, results in protruding the surface at weld-line region, where melt flows unite in at injection mold, and deteriorates the surface appearance.In this study, the optimum material design were discussed to improve both surface appearance quality and mechanical property of PPG.The weld-line protrusion height as the surface appearance quality and izod impact strength as the mechanical property were measured for PPG's with various fiber contents. The influences of fiber content, short-fiber/long-fiber ratio and flowability of matrix PP were discussed. It can be found that the low-flowability PP with a proper quantity of long fiber is effective for solving the weld-line protrusion without reducing the impact strength.