Effect of particle size of MoS2 on non⁃isothermal crystallization behavior of Polyamide 10T

doi:10.19491/j.issn.1001-9278.2025.04.002

Abstract

Abstract:

Polyamide 10T （PA10T）/MoS₂ composites were prepared by incorporating MoS₂ into semi⁃aromatic polyamide PA10T through melt blending. Differential scanning calorimetry （DSC） was conducted to study the non⁃isothermal crystallization behavior of PA10T and its composites at different cooling rates. The effect of particle size of MoS₂ on the crystallization behavior of PA10T was investigated. The non⁃isothermal crystallization kinetics of PA10T and its composites was studied by using the Jeziorny's and Mo's methods， and their non⁃isothermal crystallization activation energy was calculated by using Kissinger’s method. The results indicated that the crystallization rate of PA10T was fastened and its crystallization time was shortened. After being filled with MoS₂， the PA10T composites demonstrated a larger crystallization temperature range， an extended half⁃crystallization time， a slowed crystallization rate， and a lower potential barrier required for nanoscale MoS₂ to overcome in the crystallization process of PA10T. The analysis results obtained from the Jeziorny's and Mo's methods indicated that the MoS₂ with different particle sizes had no significant effect on the non⁃isothermal crystallization rate of PA10T. In a certain range of cooling rates， incorporating nanometer or micron MoS₂ into PA10T can be adopted as an effective means to control the crystallization rate of PA10T in its processing.

Key words: semi-aromatic polyamide, poly（decamethylene terephthalamide）, filler, molybdenum disulfide, non-isothermal crystallization, differential scanning calorimetry

CLC Number:

TQ323.6

LIU Xinlei, WEI Lianchuan, ZHANG Weizhen, LI Yuan, ZHANG Qi, ZHUANG Yi, ZHANG Shijun. Effect of particle size of MoS₂ on non⁃isothermal crystallization behavior of Polyamide 10T[J]. China Plastics, 2025, 39(4): 8-13.

Figures/Tables 10

References 21

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样品	降温速率/ ℃·min^-1	T_o/℃	T_p/℃	T_e/℃	t_1/2/ min
PA10T	5	282.6	279.7	276.4	0.6
	10	279.3	276.1	272.0	0.4
	20	274.7	271.1	266.0	0.2
	40	268.7	263.9	256.0	0.1
PA10T⁃MoS₂⁃1	5	286.1	281.4	277.2	0.9
	10	283.9	277.1	270.9	0.7
	20	279.5	271.9	264.5	0.4
	40	272.9	265.8	256.8	0.2
PA10T⁃MoS₂⁃2	5	287.2	283.1	278.0	0.9
	10	285.5	278.8	271.6	0.7
	20	281.6	273.5	265.4	0.4
	40	275.5	266.6	256.7	0.2

样品	降温速率/ ℃·min^-1	T_o/℃	T_p/℃	T_e/℃	t_1/2/ min
PA10T	5	282.6	279.7	276.4	0.6
	10	279.3	276.1	272.0	0.4
	20	274.7	271.1	266.0	0.2
	40	268.7	263.9	256.0	0.1
PA10T⁃MoS₂⁃1	5	286.1	281.4	277.2	0.9
	10	283.9	277.1	270.9	0.7
	20	279.5	271.9	264.5	0.4
	40	272.9	265.8	256.8	0.2
PA10T⁃MoS₂⁃2	5	287.2	283.1	278.0	0.9
	10	285.5	278.8	271.6	0.7
	20	281.6	273.5	265.4	0.4
	40	275.5	266.6	256.7	0.2

样品	降温速率/℃·min^-1	n	Z_t	Z_c
PA10T	5	1.63	1.52	1.09
	10	1.69	3.95	1.15
	20	1.72	10.54	1.12
	40	1.76	20.70	1.08
PA10T⁃MoS₂⁃1	5	1.47	0.80	0.96
	10	1.62	1.37	1.03
	20	1.65	3.36	1.06
	40	1.68	11.06	1.06
PA10T⁃MoS₂⁃2	5	1.45	0.77	0.95
	10	1.69	1.29	1.03
	20	1.72	3.16	1.06
	40	1.71	8.65	1.06

样品	降温速率/℃·min^-1	n	Z_t	Z_c
PA10T	5	1.63	1.52	1.09
	10	1.69	3.95	1.15
	20	1.72	10.54	1.12
	40	1.76	20.70	1.08
PA10T⁃MoS₂⁃1	5	1.47	0.80	0.96
	10	1.62	1.37	1.03
	20	1.65	3.36	1.06
	40	1.68	11.06	1.06
PA10T⁃MoS₂⁃2	5	1.45	0.77	0.95
	10	1.69	1.29	1.03
	20	1.72	3.16	1.06
	40	1.71	8.65	1.06

样品	相对结晶度/%	F（T）	α
PA10T	20	1.16	1.39
	40	2.00	1.39
	60	2.83	1.42
	80	3.94	1.45
PA10T⁃MoS₂⁃1	20	2.37	1.34
	40	4.34	1.29
	60	6.10	1.29
	80	8.19	1.30
PA10T⁃MoS₂⁃2	20	2.11	1.53
	40	4.22	1.46
	60	6.22	1.44
	80	8.74	1.43

Effect of particle size of MoS₂ on non⁃isothermal crystallization behavior of Polyamide 10T

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