Properties of Nylon PA6-based Nanocomposites Co-modified with Graphene Oxide/sodium Benzoate Complex Nucleating Agent

doi:10.11901/1005.3093.2021.248

Chinese Journal of Materials Research

2022, Vol. 36

Issue (6): 416-424 DOI: 10.11901/1005.3093.2021.248

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Properties of Nylon PA6-based Nanocomposites Co-modified with Graphene Oxide/sodium Benzoate Complex Nucleating Agent

HUANG Huan¹, ZHANG Xuntao¹, YANG Shangke¹, XIAO Liuxin¹, ZHANG Zhaoxin¹, YAN Lei¹, LIN Hailan¹, BIAN Jun¹(

), CHEN Daiqiang²

^1.College of Materials Science and Engineering, Xi-Hua University, Chengdu, Sichuan 610039, China
^2.College of Polymer Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, Chin

Cite this article:

HUANG Huan, ZHANG Xuntao, YANG Shangke, XIAO Liuxin, ZHANG Zhaoxin, YAN Lei, LIN Hailan, BIAN Jun, CHEN Daiqiang. Properties of Nylon PA6-based Nanocomposites Co-modified with Graphene Oxide/sodium Benzoate Complex Nucleating Agent. Chinese Journal of Materials Research, 2022, 36(6): 416-424.

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Abstract

Firstly, a complex nucleating agent (GO-SB) was synthesized by hydrothermal method with graphene oxide (GO) and sodium benzoate (SB) as raw material, and then nanocomposites of nylon 6 (PA6) /GO-SB were prepared by melt blending method with PA6 as matrix and GO-SB as complex nucleating agent. The effect of the introducing GO and SB separately, and GO-SB simultaneously on the morphology, mechanical and thermal-property of PA6 based nanocomposites were investigated. The results show that there are electrostatic interaction and π-π conjugation between GO and SB, and the addition of SB can promote the formation of γ-crystals in PA6. GO-SB was uniformly dispersed in PA6 matrix as heterogeneous nucleating agent, which could induce the increase of crystallization temperature, crystallinity, and thermal deformation temperature of PA6 based nanocomposites. The tensile strength and impact strength of PA6/GO-SB (100/0.05/0.25 in mass fraction) nanocomposites are 69.9%, and 157.1% higher than those of pure PA6, respectively. The tensile strength, impact strength and elastic modulus of PA6/GO-SB (100/0.05/0.25) nanocomposites were increased by 13.6%, 186.4% and 52.6%, respectively, compared with those of PA6/GO-SB (100/0.3/0) nanocomposites. Compared with k=0.238 W/m·k of the pure PA6, the thermal conductivity k=0.536 W/m·k of PA6/GO-SB (100/0.3/0) nanocomposite is increased by 125.2%; while the thermal conductivity k=0.854 W/m·k of PA6/GO-SB (100/0.05/0.25) nanocomposites is increased by 258.8%.

Key words: composite Nylon 6 (PA6) graphene oxide (GO) sodium benzoate (Sb) mechanical property thermal conductivity

Received: 16 April 2021

ZTFLH:

TQ332

Fund: Cooperation Project of Chunhui Plan of the Ministry of Education of China(Z2018088);Cooperation Project of Chunhui Plan of the Ministry of Education of China(Z2017070);Graduate Innovation Fund of Xi-hua University(SA2000002910);Interface Innovation Research Studio Project for College Students of Xi-hua University(2019-07);National Undergraduate Innovation and Entrepreneurship Training Program(202110623XXX);Sichuan Provincial First-Class Major Construction(RC2100001411);Sichuan Provincial First-Class Curriculum Construction Project(RC2100001374);Ideological and Political Curriculum Construction Project of Xihua University(RC2100001459)

About author: BIAN Jun, Tel: 13880538676, E-mail: bianjun2003@163.com

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	Huan HUANG
	Xuntao ZHANG
	Shangke YANG
	Liuxin XIAO
	Zhaoxin ZHANG
	Lei YAN
	Hailan LIN
	Jun BIAN
	Daiqiang CHEN

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https://www.cjmr.org/EN/10.11901/1005.3093.2021.248 OR https://www.cjmr.org/EN/Y2022/V36/I6/416

Table 1 DSC melt-crystallization parameters of PA6/GO-Sb nanocomposites

Fig.1 Preparation and reaction principle of GO-Sb composite nucleating agent

Fig.2 Schematic illustration of materials design (a) The aggregation state of pure PA6. (b) The increasing ordered area in PA6/GO nanocomposites due to the “heterogeneous nucleating effects” of GO. (c) The mechanism of the increasing ordered area and thermal conductivity paths of TPU/GO-Sb nanocomposites due to the better interfacial interactions and dispersion of GO-Sb compounding nucleator in the PA6 matrix

Fig.3 Infrared spectrum of filler (a) and PA6/GO-Sb nanocomposite (b)

Fig.4 XRD traces of PA6/GO-Sb nanocomposites

Fig.5 The FESEM images of pure PA6 and PA6/GO-Sb nanocomposites containing different nanofillers (a) P-G-Sb (100/0/0) nanocomposites, (b) P-G-Sb (100/0.3/0) nanocomposites, (c) P-G-Sb (100/0.25/0.05) nanocomposites, (d) P-G-Sb (100/0.05/0.25) nanocomposites

Fig.6 DSC curves of PA6/GO-Sb nanocomposites (a)-crystallization curves, (b)-melting curves

Table 2 VST of pure PA6 and PA6/GO-Sb nanocomposites

Fig.7 Mechanical properties of pure PA6 and PA6/GO-Sb nanocomposites (a) Stress-strain curves, (b) Tensile strength, (c) Elastic modulus, (d) Impact strength

Fig.8 Thermal conductivity of PA6 and PA6/GO-Sb nanocomposites

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