High strength electrospun fibers

Chen, Shouhui; Han, Donghua; Hou, Haoqing

doi:10.1002/pat.1864

Cited by 27 publications

(15 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…And later a new carbon layer was formed because of the IFR MPP, then the third and the fourth HRR peak appeared. [36] Compared with neat TPU, the ignition time (IT) of TPU composites was earlier; it may be because of the expansion of samples before ignition in the cone, which made the distance wileyonlinelibrary.com/journal/pat between the cone and the surface of samples smaller, and the thermal radiation flux becomes stronger, promoting the decomposition of polymers. It can also be seen from Fig.…”

Section: Heat Release Ratementioning

confidence: 99%

Synergistic effects between iron-graphene and melamine salt of pentaerythritol phosphate on flame retardant thermoplastic polyurethane

Chen

Jiao

2016

Polym. Adv. Technol.

View full text Add to dashboard Cite

A comparison of melamine salt of pentaerythritol phosphate (MPP), and a synergistic agents, iron–graphene (IG) was performed in thermoplastic polyurethane (TPU) by masterbatch‐melt blending on thermal and flame retardant properties. The flame retardant properties of TPU composites were characterized by limiting oxygen index (LOI), UL 94 and cone calorimeter test (CCT). The CCT results revealed that IG can significantly enhance flame retardant properties of MPP in TPU. The peak heat release rate of neat TPU and flame retardant TPU/MPP composites decreased from 2192.6 and 226.7 to 187.2 kW/m2 compared with that of TPU containing 0.25 wt% IG. The thermal stability and thermal decomposition of TPU composites were characterized by thermogravimetric analysis (TGA) and thermogravimetric/Fourier infrared spectrum analysis (TG‐IR). The results indicated IG and MPP can improve the thermal stability of TPU. The formation of thermal conductive network by IG can promote the decomposition of MPP into nonflammable melt, which can play the role of heat barrier and restrict the diffusion of fuels into combustion zone and access of oxygen to the unburned fuels. Copyright © 2016 John Wiley & Sons, Ltd.

show abstract

Section: Heat Release Ratementioning

confidence: 99%

Synergistic effects between iron-graphene and melamine salt of pentaerythritol phosphate on flame retardant thermoplastic polyurethane

Chen

Jiao

2016

Polym. Adv. Technol.

View full text Add to dashboard Cite

show abstract

“…The BP‐PI is a homo‐PI with rigid‐rod‐like chemical structures, and its macromolecular backbone consists of benzene rings and imide structures. It has been reported that electrospun BP‐PI nanofiber belt (prepared at the thermal imidization temperature of 430 °C) had the tensile stress and modulus as high as 663.7 MPa and 15.3 GPa, respectively . Note that the imidization temperature has a significant influence on mechanical properties; at the low imidization temperature of 300 °C, the BP‐PI nanofiber belt showed the tensile stress, modulus, and strain of 367.3 MPa, 9.1 GPa, and 4.68%, respectively .…”

Section: Resultsmentioning

confidence: 99%

“…First, the good compatibility and interfacial adhesion between BP‐PI nanofiber filler and HO‐PI matrix would make the resulting nanocomposite films to possess high tensile stress and modulus. Second, the BP‐PI nanofibers with rigid macromolecular backbone would become stronger after the hot‐pressing treatment at higher temperature of 350 °C (which was higher than the thermal imidization temperature of 300 °C), because of the thermal‐induced crystallization and molecular orientation . This was also the reason why the stress of neat BP‐PI nanofiber belt was increased from 300.5 to 388.0 MPa, and the modulus was increased from 7.79 to 8.27 GPa, after the hot‐pressing treatment.…”

Section: Resultsmentioning

confidence: 99%

High‐performance polyimide nanofibers reinforced polyimide nanocomposite films fabricated by co‐electrospinning followed by hot‐pressing

Ding

Huang

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

The objective of this study was to develop aligned electrospun polyimide (PI) nanofibers (with rigid macromolecular backbone) reinforced PI (with flexible macromolecular backbone) nanocomposite films. Owing to uniform dispersion of aligned PI nanofibers and excellent interfacial adhesion/interaction between filler and matrix, the resulting nanocomposite films exhibited superior mechanical and thermal properties. The nanocomposite films were fabricated by co-electrospinning of two polyamic acids (PAAs) including a rigid PAA of poly(p-phenylene biphenyltetracarboximide) (BPDA-PDA) and a flexible PAA of poly(1,4-bis (3 0 ,4 0 -dicarboxyphenoxy) phenyldiphenyl ether tetramine) (HQDA-ODA); upon thermal imidization, hybrid PAA nanofiber belts (with different weight ratios of BPDA-PDA/ HQDA-ODA) were converted into hybrid PI nanofiber belts. Subsequently, these nanofiber belts were hot-pressed to fabricate HQDA-ODA PI nanocomposite films reinforced with BPDA-PDA PI nanofibers; in specific, the nanocomposite film consisting of 80 wt % BP-PI nanofibers exhibited the highest tensile strength and modulus of 957 AE 18 MPa and 12.32 AE 0.32 GPa, respectively. The nanocomposite films also possessed excellent thermal/thermomechanical properties. Therefore, these fiber-reinforced PI nanocomposite films might be promising high-performance structural/engineering materials that would be particularly useful for high-temperature applications. Moreover, the strategy of co-electrospinning hybrid nanofiber belts followed by hot-pressing could provide an innovative approach for making highperformance polymer-matrix composites.

show abstract

“…Polyimide (PI) represents a class of high performance heteroaromatic polymers known as their high thermal resistance, good mechanical and dielectric properties, and excellent environmental stability [14][15][16]. Thus, PI materials, especially wholly aromatic ones have been considered to be one of the best candidates as high performance PUFs [17][18][19]. Various wholly aromatic PI fibers, including poly(pyromellitic anhydrideoxydianiline) (PMDA-ODA) and poly(biphenyl dianhydride-p-phenylenediamine) (BPDA-PDA) PUFs have been reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of High-whiteness Polyimide Ultrafine Fabrics by Electrospinning from Organo-soluble Semi-alicyclic Polyimide Resins

Guo

Liu

et al. 2018

J. Photopol. Sci. Technol.

View full text Add to dashboard Cite

A semi-alicyclic dianhydride monomer, 4,4'-dihydroxybiphenyldicyclohexanecarboxylate-3,3',4,4'-tetracarboxylic acid dianhydride (HTA-BP) was prepared according to a modified procedure reported in the literature with trimellitic anhydride as the starting material. A series of semi-alicyclic polyimide (PI) resins were synthesized from HTA-BP and aromatic diamines, including 4,4'-bis[(4-aminophenoxy-2-trifluoromethyl)] biphenyl (6FBAB) for PI-1, 2,2'-bis[(4-aminophenoxy)phenyl]hexafluoropropane (BDAF) for PI-2, 4,4'-diaminobenzanilide (DABA) for PI-3, and 2-chloro-4,4'-diaminobenzanilide (Cl-DABA) for PI-4 via a two-step chemical imidization procedure. The derived PI resins are easily soluble in polar aprotic solvents, such as N-methyl-2-pyrrolidone (NMP), N,N-dimethylacetamide (DMAc), and -butyrolactone (GBL). High-whiteness PI ultrafine fabrics with the yellow indices lower than 4.0 were successfully prepared by the electrospinning procedures from the PI solutions in DMAc. The PI fabrics exhibited good thermal stability with the 5% weight loss temperatures over 400 o C and glass transition temperatures higher than 190 o C.

show abstract

High strength electrospun fibers

Cited by 27 publications

References 57 publications

Synergistic effects between iron-graphene and melamine salt of pentaerythritol phosphate on flame retardant thermoplastic polyurethane

Synergistic effects between iron-graphene and melamine salt of pentaerythritol phosphate on flame retardant thermoplastic polyurethane

High‐performance polyimide nanofibers reinforced polyimide nanocomposite films fabricated by co‐electrospinning followed by hot‐pressing

Preparation and Properties of High-whiteness Polyimide Ultrafine Fabrics by Electrospinning from Organo-soluble Semi-alicyclic Polyimide Resins

Contact Info

Product

Resources

About