Preparation and properties of pitch plasticized melt spinning polyacrylonitrile-based carbon fibers precursor

被引：0

作者：

Chen J. ^{[1
]}

Han N. ^{[1
]}

Wu C. ^{[1
]}

Sun Z. ^{[1
]}

Wu Y. ^{[1
]}

Sun Z. ^{[1
]}

Wang L. ^{[1
]}

Zhang X. ^{[1
]}

机构：

[1] State Key Laboratory of Separation Membranes and Membrane Processes, Key Laboratory of Advanced Fiber and Energy Storage Technology, School of Material Science and Engineering, Tiangong University, Tianjin

来源：

Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2022年 / 39卷 / 10期

关键词：

Carbon fiber; Melt spinning; Pitch; Plasticizer; Polyacrylonitrile (PAN); Precursor;

D O I：

10.13801/j.cnki.fhclxb.20211119.002

中图分类号：

学科分类号：

摘要：

In order to reduce the melting point of polyacrylonitrile (PAN) and improve the properties of melt-spun PAN fibers, the effects of isotropic naphthalene pitch (INP) and coal tar pitch (ICP) as plasticizers on 85:14:1 mole percent poly(acrylonitrile-methyl acrylate-4-acryloxy dibenzophenone) terpolymer (P(AN-MA-ABP)) were investigated in detail. The 1wt%INP/P(AN-MA-ABP) terpolymer fibers were prepared by mixing 1wt%INP with P(AN-MA-ABP), and then melting spinning and drawing. The effects of UV irradiation time on 1wt%INP/P(AN-MA-ABP) terpolymer fibers were studied. The results show that the long-chain sulfur heterocyclic INP has a better plasticizing effect than the ICP with a thick ring structure. The diameter of the 1wt%INP/P(AN-MA-ABP) terpolymer fibers is about 52 μm, and the tensile strength is about 250 MPa, which has a smooth surface and a dense structure. Delaying the UV irradiation from 0 min to 60 min, the oxygen content on the surface of 1wt%INP/P(AN-MA-ABP) terpolymer fibers increases from 17.3% to 26.0%. Under nitrogen conditions, the initial cyclization temperature decreases from 303.8℃ to 292.4℃, and the cyclization peak temperature decreases from 318.0℃ to 308.8℃. Under air conditions, the initial cyclization temperature decrease from 299.9℃ to 295.0℃, and the cyclization peak temperature decreases from 316.4℃ to 312.6℃. After UV irradiation for 20 min, the carbon yield of 1wt%INP/P(AN-MA-ABP) terpolymer fibers carbonized at 800℃ under nitrogen increases from 41.0% to 43.4%. UV irradiation decreases the initial cyclization temperature, peak temperature, and enthalpy value of 1wt%INP/P(AN-MA-ABP) terpolymer fibers and increases the carbon yield, which are beneficial to the subsequent heat-treatment process. © 2022, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.

引用

页码：4540 / 4550

页数：10

共 40 条

[1]

NEWCOMB B A., Processing, structure, and properties of carbon fibers, Composites Part A: Applied Science and Manufacturing, 91, pp. 262-282, (2016)

[2]

CHOI D, KIL H S, LEE S., Fabrication of low-cost carbon fibers using economical precursors and advanced processing technologies, Carbon, 142, pp. 610-649, (2019)

[3]

MIN B G, SON T W, JO W H, Et al., Thermal stability of polyacrylonitrile in the melt formed by hydration[J], Journal of Applied Polymer Science, 46, 10, pp. 1793-1796, (1992)

[4]

JIANG J X, SRINIVAS K, KIZILTAS A, Et al., Rheology of polyacrylonitrile/lignin blends in ionic liquids under melt spinning conditions[J], Molecules, 24, 14, (2019)

[5]

MARTIN H J, LUO H, CHEN H, Et al., Effect of ionic liquid structure on the melt processability of polyacrylonitrile (PAN) fibers[J], ACS Applied Materials & Interfaces, 12, 7, pp. 8663-8673, (2020)

[6]

TIAN Y C, HAN K Q, ZHANG W H, Et al., Influence of melt temperature on structure of polyacrylonitrile in ionic liquids during plasticized melt spinning process[J], Applied Mechanics and Materials, 268-270, pp. 483-486, (2012)

[7]

KOENIG S, KREIS P, REINDERS L, Et al., Melt spinning of propylene carbonate-plasticized poly(acrylonitrile)-co-poly(methyl acrylate)[J], Polymers for Advanced Technologies, 31, 8, pp. 1827-1835, (2020)

[8]

MILLER G C, YU J, JOSEPH R M, Et al., Melt-spinnable polyacrylonitrile copolymer precursors for carbon fibers, Polymer, 126, pp. 87-95, (2017)

[9]

BAJAJ P, SREEKUMAR T V, SEN K., Thermal behaviour of acrylonitrile copolymers having methacrylic and itaconic acid comonomers[J], Polymer, 42, 4, pp. 1707-1718, (2001)

[10]

HAN N, ZHANG X X, WANG X C., Various comonomers in acrylonitrile based copolymers: Effects on thermal behavior[J], Iranian Polymer Journal, 19, 4, pp. 243-253, (2010)

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