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16 results on '"Qu, Minjie"'

8. Synthesis of Amorphous Poly (aryl ether ketone) Resin and its Anti‐Irradiation Properties under Gamma Ray.

Author

Teng, Rui, Wang, Honghua, Qu, Minjie, and Zhou, Guangyuan

Subjects
GAMMA rays, POLYETHERS, THERMODYNAMICS, KETONES, NUCLEAR energy, YOUNG'S modulus
Abstract

The stability of polymer materials used in nuclear environment directly determines the life and reliability of nuclear power equipment. Poly (aryl ether ketone) (PAEK) itself exhibits excellent irradiation resistance which can be widely used. The emphasis of this study lies in designing and synthesizing three different structures of amorphous PAEKs by the solution SN2 nucleophilic polycondensation. The thermodynamic properties and structural changes of the materials under gamma‐ ray (γ‐ray) irradiation were investigated and the irradiation‐resistance mechanism was discussed. The present results illustrate that the performance can be basically stable lower than 108 Gy. Up to 1013 Gy dose, γ‐ray has little effect on the impact resistance and Young ′s modulus of the three materials, the tensile strength and elongation at break decreased with the increase of irradiation dose. No new structures were formed after irradiation, and all the three materials decomposed slightly caused by oxidized. [ABSTRACT FROM AUTHOR]

Published
2023
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11. Synergistic effects of aluminium hypophosphite on the flame retardancy and thermal degradation behaviours of a novel intumescent flame retardant thermoplastic vulcanisate composite

Author

Mingshuai Fan, Qu Minjie, Zhang Yongjie, Guixia Zhang, Wang Zhichao, and Feng Na

Subjects
chemistry.chemical_classification, Thermoplastic, Materials science, Polymers and Plastics, General Chemical Engineering, Hypophosphite, Composite number, 02 engineering and technology, 021001 nanoscience & nanotechnology, Combustion, chemistry.chemical_compound, 020401 chemical engineering, chemistry, Materials Chemistry, Ceramics and Composites, Thermal stability, Char, 0204 chemical engineering, Composite material, 0210 nano-technology, Intumescent, Fire retardant
Abstract

The synergistic effects of aluminum hypophosphite (AHP) on the flame retardancy, thermal degradation behaviors of a novel intumescent flame retardant thermoplastic vulcanizate (TPV/IFR) composite were investigated. The results showed that the combination of AHP with IFR showed evident synergistic effects on the increase in the LOI value and reduction of the combustion parameters for the TPV/IFR/AHP composites at the optimum weight ratio of IFR/AHP (6/1) as evidenced by LOI, UL-94 and CCT. The TGA data revealed that AHP could change the degradation behavior of TPV/IFR composites and enhance the thermal stability of the TPV/IFR composites at high temperature. The results of FTIR, EDXS, LRS and SEM demonstrated that TPV/IFR/AHP composites could form more continuous, dense and stable char layer on the materials surface, and consequently improving the flame retardancy. Based on these results, the possible condensed flame retardant mechanism of TPV/IFR/AHP composites was concluded in detail.

Published
2019

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