• 제목/요약/키워드: Continuous Spinning

검색결과 31건 처리시간 0.036초

현무암의 용융특성과 연속섬유 방사 연구 (Studies on the Melting Characterization of Basalt and its Continuous Fiber Spinning)

  • 박혜정;박선민;이재원;노광철;김재근
    • Composites Research
    • /
    • 제23권3호
    • /
    • pp.43-49
    • /
    • 2010
  • 제주도 표선리 현무암 원광을 이용하여 연속 방사에 의해 현무암 섬유를 제조하였다. 먼저 현무암의 용융특성을 확인하기 위하여 현무암 원광을 백금도가니에 넣고 $1550^{\circ}C$로 용융시킨 후, 물속에서 급냉하였다. 냉각한 후 X-선 회절, 열팽창, 고온 점도, 고온 전기전도도와 고온 현미경을 측정 분석하여 연속방사 조건을 조사하였다. 연속 섬유를 제조하기 위한 최적의 방사 온도와 고온 점도는 각각 $1264^{\circ}C$$10^{2.8}$ poise이었다. 제조된 방사 섬유의 특성은 인장강도, 전자현미경 관찰, 내열시험 등으로 확인하였다. 부싱 온도 $1240^{\circ}C$와 와인더 속도 4600rpm의 방사 조건에서 제조된 섬유의 인장 강도는 3660MPa을 나타내었다.

실의 방출 조건이 Hairiness에 미치는 영향 (Influence of spinning Condition For Hairiness)

  • 김보환
    • 기술사
    • /
    • 제33권5호
    • /
    • pp.38-44
    • /
    • 2000
  • High Quality is requested by Consumers more and more, Accordingly, the Quality of Yarns should be followed to satisfy the Desire of Consumers. Therefore, Yarn Hairiness, which has effects on Touch, Handle, iud Dyeing, is one of important factor. In order to reduce Yarn Hairiness, various tests were made in Spinning process and the following Spinning conditions can be suggested. -. The Speed should be as lower as possible. -. Using proper Tension Disc on Winding process. -. Using Colletor on Ring Spinning process. -. Using proper Ring and Traveller :n Ring Spinning process To get the best results, continuous Trial tests should be carried-on.

  • PDF

Studies on Melt Spinning of PET Hollow Fibers

  • O Tae-Hwan;Lee Mu-Seok;Kim Sang-Yong;Sim Hyeon-Ju
    • 한국섬유공학회:학술대회논문집
    • /
    • 한국섬유공학회 1998년도 봄 학술발표회 논문집
    • /
    • pp.111-115
    • /
    • 1998
  • Fiber spinning is a continuous deformation process by which material is converted into a fiber. The melt spinning process was analyzed mainly by employing an asymptotic method of the so-called thin filament equations which formulates dynamics of spinning process by averaging over the cross-section of filament the set of fundamental equations. The method gives the approximate results for commonly used circular fiber spinning.(omitted)

  • PDF

섬유화 온도 변화에 따른 E-glass fiber의 물리적 특성 (Physical Properties of E-glass Fiber According to Fiberizing Temperature)

  • 이지선;이미재;임태영;이영진;전대우;현승균;김진호
    • 한국재료학회지
    • /
    • 제27권1호
    • /
    • pp.43-47
    • /
    • 2017
  • E (Electric) -glass fibers are the most widely used glass fibers, taking up 90 % of the long glass fiber market. However, very few papers have appeared on the physical characteristics of E-glass fibers and how they depend on the fiberizing temperature of fiber spinning. Glass fiber was fabricated via continuous spinning process using bulk E-glass. In order to fabricate the E-glass specimen, raw materials were put into a Pt crucible and melted at $1550^{\circ}C$ for 2hrs; mixture was then annealed at $621{\pm}10^{\circ}C$ for 2hrs. The transmittance and adaptable temperature for spinning of the bulk marble glass were characterized using a UV-visible spectrometer and a viscometer. Continuous spinning was carried out using direct melting spinning equipment as a function of the fiberizing temperature in the range of $1175{\sim}1250^{\circ}C$, while the winder speed was fixed at 500 rpm. Subsequently we investigated the physical properties of the E-glass fiber. The average diameter of the synthesized glass fiber was measured by optical microscope. The mechanical properties of the fiber were confirmed using a UTM (universal materials testing machine); the maximum tensile strength was measured and found to be $1843{\pm}449MPa$ at $1225^{\circ}C$.

Advances in liquid crystalline nano-carbon materials: preparation of nano-carbon based lyotropic liquid crystal and their fabrication of nano-carbon fibers with liquid crystalline spinning

  • Choi, Yong-Mun;Jung, Jin;Hwang, Jun Yeon;Kim, Seung Min;Jeong, Hyeonsu;Ku, Bon-Cheol;Goh, Munju
    • Carbon letters
    • /
    • 제16권4호
    • /
    • pp.223-232
    • /
    • 2015
  • This review presents current progress in the preparation methods of liquid crystalline nano-carbon materials and the liquid crystalline spinning method for producing nano-carbon fibers. In particular, we focus on the fabrication of liquid crystalline carbon nanotubes by spinning from superacids, and the continuous production of macroscopic fiber from liquid crystalline graphene oxide.

대두 단백섬유의 제조에 관한 연구 (Soyprotein Fiber Formation)

  • 변시명;권종훈;김철진;이양희
    • 한국식품과학회지
    • /
    • 제10권2호
    • /
    • pp.143-150
    • /
    • 1978
  • 저자들은 전보(Korean J. Food Sci. Techno., 9,123(1997)에서 분리 대두 단백의 식품학적 성질을 조사하였다. 본 연구에서는 이 성질을 응용하여 대두 단백섬유를 제조하고저 분실 험실에서 고안 설계하여 의뢰제작한 protein spinning apparatus를 사용하여 분리 대두단백으로 대두단백섬유 제조실험을 행한결과 texture가 우수한 제품을 얻었다. 제조조건은 15-18% 단백질용액을 알카리 (0.6%)로 처리하여 50-100 PSI spinning press로 사출한 후 12% Nacl-1 N acetic acid bath에서 응고시켰다. 12% 단백질 용액은 생성된 단백섬유의 texture가 불량하여 일정한 모형을 유지하지 못하였다. 제품의 성질을 Instron기기와 texturometer를 사용하여 측정하였다. 아울러 대두 단백섬유의 형성기작을 제시하였다.

  • PDF

병렬구조 모션 시뮬레이터 이클립스-II 를 위한 가상현실 시험경로 개발 (Development of the Virtual Test Path for Eclipse-II, A Parallel Mechanism Motion Simulator)

  • 인우성;김종원
    • 한국정밀공학회:학술대회논문집
    • /
    • 한국정밀공학회 2004년도 추계학술대회 논문집
    • /
    • pp.965-968
    • /
    • 2004
  • This paper describes the development of the test path for Eclipse-II, a parallel mechanism motion simulator. Eclipse-II which can be used as a base for general motion simulators, enables unlimited continuous 360-degree spinning in any rotational axes plus finite X, Y, and Z translation motions. The advantage of enabling continuous 360-degree spinning allows various motions for virtual reality. In this paper, the development of the test path to verify the robustness of the Eclipse-II motion simulator is described. The test motions, which satisfy the requirements of test path, are suggested and washout filter enables these motions reproduced in the limited workspace. The trial run is conducted to verify the robustness of the Eclipse-II motion simulator. Additionally the standard data format of virtual reality for Eclipse-II One Man Ride is suggested.

  • PDF

저유전율을 가지는 D-Glass Fiber의 제조 및 특성 (Fabrication and Properties of D-Glass Fiber with Low Dielectric Constant)

  • 정보라;이지선;이미재;임태영;이영진;전대우;신동욱;김진호
    • 한국재료학회지
    • /
    • 제28권4호
    • /
    • pp.254-259
    • /
    • 2018
  • General D-glass(Dielectric glass) fibers are adaptable to PCBs(Printed circuit boards) because they have a low dielectric constant of about 3.5~4.5. However, very few papers have appeared on the physical characteristics of D-glass fibers. D-glass fibers were fabricated via continuous spinning process using bulk D-glass. In order to fabricate the D-glass, raw materials were put into a Pt crucible, melted at $1650^{\circ}C$ for 2 hrs, and then annealed at $521{\pm}10^{\circ}C$ for 2 hrs. We obtained transparent clear glass. The transmittance and adaptable temperature for spinning of the bulk marble glass were characterized using a UV-visible spectrometer and a viscometer. Continuous spinning was carried out using direct melting spinning equipment as a function of the fiberizing temperature in the range of $1368^{\circ}C$ to $1460^{\circ}C$, while the winder speed was between 100 rpm and 200 rpm. We investigated the physical properties of the D-glass fibers. The average diameters of the glass fibers were measured by optical microscope and FE-SEM. The average diameters of the D-glass fibers were 21.36 um at 100 rpm and 34.06 um at 200 rpm. The mechanical properties of the fibers were confirmed using a UTM(Universal materials testing machine). The average tensile strengths of the D-glass fibers were 467.03 MPa at 100 rpm and 522.60 MPa at 200 rpm.

카디 운동을 통해서 본 복식의 의미에 관한 연구 (A Study on the Significance of the Costume with Khadi Campaign)

  • 이자연
    • 복식문화연구
    • /
    • 제9권1호
    • /
    • pp.1-10
    • /
    • 2001
  • This study is to reconsider the symbolic potential of the costume by investigating the role of cloth in Indian culture, noting the fact that Indians wore hand-woven cloth and adopted a flag with the spinning wheel in the center as part of their nationalistic programs for independence. The results are as follows; The Indian cotton industry had held the fist position in the world and spinning and weaving had been an Indian national industry until the early part of the 19th century. As for the Indian cotton industry under the rule of Britain, Indian was reduced to being a colony producing raw materials and a market of cheap British finished goods, and eventually fell into anarchy with economic poverty of the general public and peasants'uprising mixed with the complaint of the intellectuals. The Indian National Movement started as a resort to escape the British rule because of continuous poverty and social exhaustion, and its pivot was Gandhi. Gandhi launched a revolutionary noncooperation movement in Indian society with diverse races, religions and castes, and developed nation-wide campaigns such as Boycott, Swadeshi, the encouragement of spinning wheels, etc. Gandhi urged that Indians' weak identity and poverty were caused by the dissolution of their native craft and that the Indians should wear Indian products for economic independence. Accordingly, leaders of Indian National Congress regarded a spinning wheel as an economic necessity and national symbol, and approved manual spinning and weaving as part of their nationalistic programs in order to drew the general public to the nationalistic movement in 1920. They also decided that all Congressmen should wear hand-woven cloth, Khadi, and adopted spinning wheels as the logo type of Indian National Congress. Khadi, Indian national cloth, was a symbol of national unification, freedom and equality, and also a means of economic self-sufficiency, Swadeshi, and eventually led India to autonomy, Swaraji. Therefore, it can be concluded that the cloth converted Indias economic and political identity.

  • PDF