Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Sung Woon Cha"'
Publikováno v:
Polymers, Vol 16, Iss 16, p 2242 (2024)
Four-dimensional (4D) printing adds the dimension of time to 3D-printed specimens, causing movement when external stimuli are applied. This movement enables applications across various fields, including the soft robotics, aerospace, apparel, and auto
Externí odkaz:
https://doaj.org/article/8d7a5f88828d45d8945c192309cc57bb
Autor:
Kwan Hoon Kim, Jae Hoo Kim, Dong Hwan Lim, Byung Chul Kwon, Jin Hong, Ho Sub Yoon, Sung Woon Cha
Publikováno v:
Polymers, Vol 16, Iss 9, p 1276 (2024)
In previous studies, difficulties were encountered in measuring changes within high-pressure vessels owing to limitations such as sensor connectors and sensor failures under high-pressure conditions. In addition, polymer–gas mixtures experience ins
Externí odkaz:
https://doaj.org/article/2524fe917ade4b48a0ab4afd4465c3b7
Publikováno v:
Lubricants, Vol 11, Iss 8, p 322 (2023)
Bacterial cellulose (BC) is a biodegradable, non-toxic, natural substance that can be obtained by culturing bacteria. It can be approached in various ways from physical, chemical, and biological points. BC nanoparticles have been applied as lubricati
Externí odkaz:
https://doaj.org/article/c23720368121483a9b212eda4ba3fe96
Publikováno v:
Polymers, Vol 15, Iss 5, p 1153 (2023)
This study proposes a novel process that integrates the molding and patterning of solid-state polymers with the force generated from the volume expansion of the microcellular-foaming process (MCP) and the softening of solid-state polymers due to gas
Externí odkaz:
https://doaj.org/article/07c1c5722f524ac09f6763a63d6999ae
Autor:
Jin Hong, Sung Woon Cha
Publikováno v:
Materials, Vol 15, Iss 6, p 2007 (2022)
Noise pollution critically degrades the quality of human life, and its effects are becoming more severe due to rapid population growth and the development of industry and transportation. Acoustic wave aggregation in the 30–8000 Hz band can have a n
Externí odkaz:
https://doaj.org/article/1352072b51fe4eab82a7d02d1eb751a2
Publikováno v:
Polymers, Vol 14, Iss 3, p 596 (2022)
Several researchers have investigated the phenomenon of polymer–gas mixtures, and a few have proposed diffusion coefficient values instead of a diffusion coefficient model. There is a paucity of studies focused on the continuous change in the diffu
Externí odkaz:
https://doaj.org/article/3ee0030dab40438c8e6259b198e57049
Publikováno v:
Polymers, Vol 14, Iss 1, p 173 (2022)
In this study, the vibration and sound response characteristics of composites produced via injection molding applied with a microcellular foaming process (MCPs) were improved. The study was conducted using PA6 and glass fiber composites, which are re
Externí odkaz:
https://doaj.org/article/2a124a4d1a644a9dbbce888af98ca1f4
Publikováno v:
Polymers, Vol 13, Iss 17, p 2930 (2021)
Injection research using aluminum flakes has been conducted to realize metallic textures on the surface of plastic products. Several studies have focused on the effect of the orientation and quality of the flakes when using conventional injection mol
Externí odkaz:
https://doaj.org/article/07aee3152adf447e900b115fabd2bb95
Autor:
Ju-Heon Lee, Dong Hwi Kim, Youngjae Ryu, Kwan Hoon Kim, Seong Ho Jeong, Tae Yang Kim, Sung Woon Cha
Publikováno v:
Polymers, Vol 13, Iss 10, p 1602 (2021)
Sesame oil cakes (SOC) produced during sesame oil production can be classified as plant residues. This study aims to use SOC as a composite material for injection molding. A biocomposite containing polypropylene (PP) and SOC, namely PP/SOC, was devel
Externí odkaz:
https://doaj.org/article/b9e207ab8c574fb7be5302142cdf1016
Autor:
Jin Hong, Soo-hyun Cho, Chang-Seok Yun, Dong Hwi Kim, Youngjae Ryu, Sung Woon Cha, Yong Hoon Jang
Publikováno v:
Polymers, Vol 13, Iss 11, p 1817 (2021)
Ceramics are non-metallic inorganic materials fabricated from natural or high-purity raw materials through heating and cooling processes. Urethane is a three-dimensional plastic with both elasticity and chemical resistance; moreover, it is used as a
Externí odkaz:
https://doaj.org/article/e9f4f1c573254ac7b4150a99fbdea3fd