pISSN : 1225-1089 / eISSN : 2288-6419
Textile Science and Engineering(Text. Sci. Eng.) is the journal of the Korean Fiber Society.
It was launched in 1964.
It is published bimonthly(February, April, June, August, October and December) in either Korean or English.
Total or a part of the articles in this journal are abstracted in Chemical Abstract Service, DOI/Crossref and Korea Citation Index.
Copyright by the Korean Fiber Society. All rights reserved. Reproduction in whole or in part in any form without permission in writing from the Korean Fiber Society is strictly prohibited.
It is published bimonthly(February, April, June, August, October and December) in either Korean or English.
Total or a part of the articles in this journal are abstracted in Chemical Abstract Service, DOI/Crossref and Korea Citation Index.
Copyright by the Korean Fiber Society. All rights reserved. Reproduction in whole or in part in any form without permission in writing from the Korean Fiber Society is strictly prohibited.
최근 발간 목록 (61권 2호, 4월 2024)
3D 프린팅 TPU 압력 센서를 이용한 보행 특징 모니터링이 가능한 스마트 신발에 관한 연구
백수진 김아현 정임주 이선희 김종욱
Walking is an exercise that can be easily started by people with weak physical strength and the elderly, which can have many effects, such as smoothing blood circulation and preventing diabetes and obesity, but walking in the right posture is important for effective walking exercise. In this paper, we propose a 3D printed TPU (thermoplastic polyurethane) pressure sensor manufactured using an electrically conductive filament rather than pressure sensors sold commecially, and using the data obtained therefrom, we implemented a system that monitors the user’s walking characteristics through a cloud system and attached it to the shoe to produce a smart shoes. Since the sensor is manufactured through 3D printing, it can be freely manufactured in the desired shape and size, and can be used not only as a shoe but also as a touch sensor that can act as the skin of a humanoid robot.
자외선 경화 프린팅을 이용한 면직물의 염색성 연구
이범훈
In this study, we investigated the dyeing properties of cotton fabric printed with UVcurable ink under conditions that included plasma pre-treatment and primer post-treatment. The presence or absence of plasma pre-treatment showed little change in the K/S value. However, The increase in K/S values was confirmed to be 20% for Cyan, 14% for Magenta, 17% for Yellow, and 15% for Black, respectively. The wash fastness of fabric treated with plasma and primer coating showed a grade 4 or higher for staining, with black showing grade 3 for fade and other colors showing grades 3-4.
페닐렌 디아민의 아렌 대체 패턴에 따른 에폭시 수지의 경화 거동과 열 및 기계적 특성 연구
박건환 권웅 천지연 정희제 임지훈 원종성 이만영 이승걸 정의경
To study the effect of arene substitution patterns of phenylenediamines, as curing agents, on curing behaviors, thermal and mechanical properties of epoxy resins, DGEBF(Diglycidyl ether of bisphenol F) and o, m, p-phenylenediamine(PDA) were selected. The cure kinetics of epoxy mixtures were analyzed under both dynamic and isothermal conditions using differential scanning calorimetry(DSC). The activation energy and curing initiation temperature were found to be lowest with p-PDA and highest with o-PDA and it resulted that the degree of cure and curing rate were highest and fastest with p-PDA and lowest with o-PDA. Tg and thermal stability of the epoxy samples were better with o-PDA and m-PDA than p-PDA. Tensile strength and fracture toughness were highest with m-PDA and lowest with p-PDA. These results indicated that m-PDA could be the best curing agent of isomeric PDAs. And mechanical properties of the epoxy resin could be different only by the isomeric structures of curing agents.
쇄연장제 용융 혼합이 재활용 PET 플레이크의 인장성질에 미치는 영향
남준식 정창성 이재만 오태환
In this study, recycled PET (r-PET) flakes were blended with pyromellitic dianhydride (PMDA) and poly(styrene-co-glycidyl methacrylate-co-methyl methacrylate) (ADR-4400) as chain extenders in the melt state at varying amounts, reaction times and temperatures. The rheological and mechanical properties of the r-PET/PMDA and r-PET/ADR-4400 were analyzed to confirm the effect of the reaction conditions. The molecular weight of recycled PET flakes increases with the addition of chain extenders and it was confirmed that PMDA, a low molecular weight chain extender, increased the molecular weight more than ADR-4400, a high molecular weight chain extender. The tensile strength of recycled PET increases due to the chain extension reaction, with a maximum value at an addition level of 0.5 phr. The effect of reaction temperature on tensile strength shows that ADR-4400 has a maximum value at 270 oC, while PMDA tends to decrease with increasing reaction temperature. For reaction time, ADR-4400 shows a maximum value at 5 minutes, while PMDA shows an increase with longer reaction time. The initial modulus is lower for ADR-4400 than for PMDA, which is attributed to the decrease in crystallinity and the change in entropy. A concentration of 0.5 phr, a reaction temperature of 270 °C, and a reaction time of 5 minutes were found to be the optimal conditions. Both PMDA and ADR-4400 in a 5:5 mixing ratio can be used to improve tensile strength and minimize the decrease in Young’s modulus.