KR900006577A - Manufacturing method of anisotropic liquid crystal pitch for carbon fiber manufacturing - Google Patents

Manufacturing method of anisotropic liquid crystal pitch for carbon fiber manufacturing Download PDF

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Publication number
KR900006577A
KR900006577A KR1019880013527A KR880013527A KR900006577A KR 900006577 A KR900006577 A KR 900006577A KR 1019880013527 A KR1019880013527 A KR 1019880013527A KR 880013527 A KR880013527 A KR 880013527A KR 900006577 A KR900006577 A KR 900006577A
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KR
South Korea
Prior art keywords
manufacturing
liquid crystal
heat treatment
carbon fiber
anisotropic liquid
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Application number
KR1019880013527A
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Korean (ko)
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KR910004469B1 (en
Inventor
박양덕
최재훈
윤성호
Original Assignee
정명식
포항종합제철 주식회사
박태준
재단법인산업과학기술연구소
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Priority to KR1019880013527A priority Critical patent/KR910004469B1/en
Publication of KR900006577A publication Critical patent/KR900006577A/en
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Publication of KR910004469B1 publication Critical patent/KR910004469B1/en

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
    • D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
    • D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Inorganic Fibers (AREA)
  • Working-Up Tar And Pitch (AREA)

Abstract

내용 없음.No content.

Description

탄소섬유제조용 이방성 액정핏치의 제조방법Manufacturing method of anisotropic liquid crystal pitch for carbon fiber manufacturing

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제 1 도는 이방성 액정핏치의 편광현미경 사진으로서, (a)는 이방성 액정함유량이 50Vol%인 것을 , (b)는 이방성 액정함유량이 85Vol%인 것을, (c)는 이방성 액정함유량이 100Vol%인 것을 나타냄.1 is a polarized light micrograph of the anisotropic liquid crystal pitch, (a) is 50 vol% anisotropic liquid crystal content, (b) is 85 vol% anisotropic liquid crystal content, (c) is 100 vol% anisotropic liquid crystal content Indicates.

제 2 도는 이방성 액정핏치의 편광현미경 사진으로서 (a) 및 (b)는 이방성 액정함유량이 100Vol%인 것을, (c)는 이방성 액정함유량이 100Vol%이고 기공이 존재하고 있는 것을, (d)는 이방성 액정함유량이 90Vol%인 것을 나타냄.2 is a polarized light micrograph of the anisotropic liquid crystal pitch (a) and (b) is an anisotropic liquid crystal content of 100 Vol%, (c) is an anisotropic liquid crystal content of 100 Vol%, the presence of pores, (d) It shows that the anisotropic liquid crystal content is 90 Vol%.

제 3 도는 융점이 높은 이방성 액정핏치를 용융방사하여 제조한 핏치계 탄소섬유의 SEM 사진.3 is a SEM photograph of a pitch-based carbon fiber prepared by melt spinning anisotropic liquid crystal pitch having a high melting point.

제 4 도는 융점이 295℃인 이방성 액정핏치를 용융방사하여 제조한 핏치계 탄소섬유의 SEM 사진.4 is a SEM photograph of a pitch-based carbon fiber prepared by melt spinning anisotropic liquid crystal pitch having a melting point of 295 ° C.

Claims (1)

중질유를 열처리하여 탄소섬유제조용 액정핏치를 제조하는 방법에 있어서, 상기 열처리 공정이, 중질유를 유속 0.5-4㎖/sec.g의 불활성기체 흐름하에서 승온속도 3-10℃/min로 승온하여 온도 360-500℃의 범위내에서 0.5-2시간동안 열처리함으로써 비점 200℃이상의 열처리생성물을 얻는 제 1 단계 : 상기 제 1 단계에서 얻어진 비점 200℃이상의 열처리생성물을 얻는 제 1 단계 : 상기 제 1 단계에서 얻어진 비점 200℃이상의 열처리 생성물을 온도 350-500℃, 압력 5-30kg/㎠G 범위내에서 0.5-3시간 열처리하는 제 2 단계 : 및 온도 360-470℃, 압력 0.1-10torr에서 0.5-3시간 열처리하는 제 3 단계를 포함하는 것을 특징으로 하는 탄소섬유제조용 이방성 액정핏치의 제조방법.In the method of manufacturing a liquid crystal pitch for carbon fiber production by heat treating heavy oil, the heat treatment step is performed by heating the heavy oil at a heating rate of 3-10 ° C./min under an inert gas flow rate of 0.5-4 ml / sec.g at a temperature of 360 °. A first step of obtaining a heat treatment product having a boiling point of 200 ° C. or more by heat treatment within a range of −500 ° C. for 0.5-2 hours: A first step of obtaining a heat treatment product having a boiling point of 200 ° C. or more obtained in the first step: obtained in the first step The second step of heat-treating the heat-treated product having a boiling point of 200 ° C. or higher at a temperature of 350-500 ° C. and a pressure of 5-30 kg / cm 2 G for 0.5-3 hours: and a heat treatment of 0.5-3 hours at a temperature of 360-470 ° C. and a pressure of 0.1-10 torr Method for producing an anisotropic liquid crystal pitch for producing carbon fibers comprising a third step. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880013527A 1988-10-17 1988-10-17 The manufacturing process of anisotropic liquid crystal pitch for the use of carbon fibers KR910004469B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019880013527A KR910004469B1 (en) 1988-10-17 1988-10-17 The manufacturing process of anisotropic liquid crystal pitch for the use of carbon fibers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019880013527A KR910004469B1 (en) 1988-10-17 1988-10-17 The manufacturing process of anisotropic liquid crystal pitch for the use of carbon fibers

Publications (2)

Publication Number Publication Date
KR900006577A true KR900006577A (en) 1990-05-08
KR910004469B1 KR910004469B1 (en) 1991-06-29

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KR1019880013527A KR910004469B1 (en) 1988-10-17 1988-10-17 The manufacturing process of anisotropic liquid crystal pitch for the use of carbon fibers

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111303962A (en) * 2017-11-10 2020-06-19 李明 Lubricating oil additive

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018131896A1 (en) * 2017-01-10 2018-07-19 한국과학기술원 Liquid crystal composite carbon fiber and method for preparing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111303962A (en) * 2017-11-10 2020-06-19 李明 Lubricating oil additive

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KR910004469B1 (en) 1991-06-29

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