1
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Yang J, Li R, Hu L, Wang W. Influence of Thermal Aging on Space Charge Characteristics and Electrical Conduction Behavior of Cross-Linked Polyethylene Cable Insulation. Polymers (Basel) 2024; 16:1600. [PMID: 38891546 PMCID: PMC11174931 DOI: 10.3390/polym16111600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/30/2024] [Accepted: 06/03/2024] [Indexed: 06/21/2024] Open
Abstract
The aging of cable insulation presents a significant threat to the safe operation of cables, with space charge serving as a crucial factor influencing cable insulation degradation. However, the characteristics related to space charge and conduction current behavior during thermal aging remain unclear. This study focused on the thermal aging of cross-linked polyethylene (XLPE) material and utilizes a combined pulse electro-acoustic (PEA) and conduction current testing system to analyze the space charge and conduction current characteristics in the sample under varying electric fields and temperatures. The average charge density, short-circuit residual electric field, electric field distortion rate, and conduction current were studied. The findings indicate that the space charge in the samples following thermal aging is predominantly governed by the injected charge. The amorphous region of XLPE decreases, while the cross-linking degree increases after aging, thereby facilitating charge carrier migration within the sample and reducing the generation of charge carriers through thermal pyrolysis. The minimum temperature required for charge injection is reduced by thermal aging. Furthermore, modifications in conduction current, residual electric field, and average charge density indicate that thermal aging has the potential to alter the microstructure and trap characteristics of XLPE. This study provides empirical evidence to elucidate the underlying mechanism of cable insulation aging.
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Affiliation(s)
- Jie Yang
- Engineering Training Center of CAVTC, Chengdu Aeronautic Polytechnic, Chengdu 610100, China;
| | - Ruizhe Li
- State Key Laboratory of Electrical Insulation and Power Equipment, Department of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (R.L.); (L.H.)
| | - Leiyu Hu
- State Key Laboratory of Electrical Insulation and Power Equipment, Department of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (R.L.); (L.H.)
| | - Weiwang Wang
- State Key Laboratory of Electrical Insulation and Power Equipment, Department of Electrical Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (R.L.); (L.H.)
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2
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Ren Y, Li Z, Li X, Su J, Li Y, Gao Y, Zhou J, Ji C, Zhu S, Yu M. The Influence of Thermal Parameters on the Self-Nucleation Behavior of Polyphenylene Sulfide (PPS) during Secondary Thermoforming. MATERIALS (BASEL, SWITZERLAND) 2024; 17:890. [PMID: 38399144 PMCID: PMC10890424 DOI: 10.3390/ma17040890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 02/04/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024]
Abstract
During the secondary thermoforming of carbon fiber-reinforced polyphenylene sulfide (CF/PPS) composites, a vital material for the aerospace field, varied thermal parameters profoundly influence the crystallization behavior of the PPS matrix. Notably, PPS exhibits a distinctive self-nucleation (SN) behavior during repeated thermal cycles. This behavior not only affects its crystallization but also impacts the processing and mechanical properties of PPS and CF/PPS composites. In this article, the effects of various parameters on the SN and non-isothermal crystallization behavior of PPS during two thermal cycles were systematically investigated by differential scanning calorimetry. It was found that the SN behavior was not affected by the cooling rate in the second thermal cycle. Furthermore, the lamellar annealing resulting from the heating process in both thermal cycles affected the temperature range for forming the special SN domain, because of the refined lamellar structure, and expelled various defects. Finally, this study indicated that to control the strong melt memory effect in the first thermal cycle, both the heating rate and processing melt temperature need to be controlled simultaneously. This work reveals that through collaborative control of these parameters, the crystalline morphology, crystallization temperature and crystallization rate in two thermal cycles are controlled. Furthermore, it presents a new perspective for controlling the crystallization behavior of the thermoplastic composite matrix during the secondary thermoforming process.
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Affiliation(s)
- Yi Ren
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Collaborative Innovation Center of High-Performance Fibers and Composites (Province-Ministry Joint), Key Laboratory of High-Performance Fibers & Products, Ministry of Education, Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China
- Key Laboratory of Shanghai City for Lightweight Composites, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Zhouyang Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Collaborative Innovation Center of High-Performance Fibers and Composites (Province-Ministry Joint), Key Laboratory of High-Performance Fibers & Products, Ministry of Education, Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China
| | - Xinguo Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Collaborative Innovation Center of High-Performance Fibers and Composites (Province-Ministry Joint), Key Laboratory of High-Performance Fibers & Products, Ministry of Education, Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China
- Key Laboratory of Shanghai City for Lightweight Composites, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Jiayu Su
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Collaborative Innovation Center of High-Performance Fibers and Composites (Province-Ministry Joint), Key Laboratory of High-Performance Fibers & Products, Ministry of Education, Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China
- Key Laboratory of Shanghai City for Lightweight Composites, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yue Li
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai 201306, China
| | - Yu Gao
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Collaborative Innovation Center of High-Performance Fibers and Composites (Province-Ministry Joint), Key Laboratory of High-Performance Fibers & Products, Ministry of Education, Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China
- Key Laboratory of Shanghai City for Lightweight Composites, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Jianfeng Zhou
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Collaborative Innovation Center of High-Performance Fibers and Composites (Province-Ministry Joint), Key Laboratory of High-Performance Fibers & Products, Ministry of Education, Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China
| | - Chengchang Ji
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Collaborative Innovation Center of High-Performance Fibers and Composites (Province-Ministry Joint), Key Laboratory of High-Performance Fibers & Products, Ministry of Education, Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China
- Key Laboratory of Shanghai City for Lightweight Composites, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Shu Zhu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Collaborative Innovation Center of High-Performance Fibers and Composites (Province-Ministry Joint), Key Laboratory of High-Performance Fibers & Products, Ministry of Education, Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China
- Key Laboratory of Shanghai City for Lightweight Composites, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Muhuo Yu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Shanghai Collaborative Innovation Center of High-Performance Fibers and Composites (Province-Ministry Joint), Key Laboratory of High-Performance Fibers & Products, Ministry of Education, Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China
- Key Laboratory of Shanghai City for Lightweight Composites, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
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3
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Pereira dos Santos Lima G, Ait-Amar S, Velu G, Frezel P, Boudiba A, Lafqir S, Nicolay A, Herze PY, Poelman M. Thermal Evaluation of Silica-Based Insulated Magnet Wires from the Sol-Gel Process. Gels 2023; 9:619. [PMID: 37623074 PMCID: PMC10453791 DOI: 10.3390/gels9080619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/18/2023] [Accepted: 07/20/2023] [Indexed: 08/26/2023] Open
Abstract
The conventional enameling process used in the fabrication of magnet wires requires harmful processes and products. The target of the industry in the actual context of electrification is to increase the electrical machines' efficiency. Indeed, the electrical insulation systems (EIS) of an electrical machine undergo various environmental constraints that can shorten their lifespans. Consequently, aspects of the insulation need to be improved, such as its thermal resistance. One of the challenges is to implement sustainable technology without losing performance. This work consists of the thermal performance evaluation of new magnet wires insulated by three types of composites of silica-based solution from the Sol-gel process and amorphous polyamide-imide (PAI). These composite coats are overcoated by an extruded thermoplastic resin with and without fillers. Different types of insulation are tested and compared to determine the better configuration. Thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR) analysis, scanning electron microscopy (SEM) analysis, curing characteristics by tangent delta curve, and thermal-aging tests at three temperatures were carried out on the different EIS systems. Dielectric measurements were made between thermal-aging cycles. Their basic mechanical, electrical, and thermal characteristics are promising: the cut-through temperature is situated above 430 °C, their breakdown voltage values are between 5 kV and 9 kV (grade 3), and a good adhesion (overcoming more than 140 turns on a peel test). The thermal-aging results have been consistent with the TGA analysis results. The thermal index following the IEC standards was estimated for the selected EIS, which would have the main basic characteristics of a magnet wire of 200 class; moreover, it would be a greener enameled wire compared to the conventional one.
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Affiliation(s)
| | - Sonia Ait-Amar
- UR 4025, Laboratoire Systèmes Electrotechniques et Environnement (LSEE), Univ. Artois, 62400 Béthune, France;
| | - Gabriel Velu
- UR 4025, Laboratoire Systèmes Electrotechniques et Environnement (LSEE), Univ. Artois, 62400 Béthune, France;
| | | | - Abdelhamid Boudiba
- Materia Nova, ASBL, Parc Initialis, Av. Nicolas Copernic, 7000 Mons, Belgium; (A.B.); (S.L.); (M.P.)
| | - Soumaya Lafqir
- Materia Nova, ASBL, Parc Initialis, Av. Nicolas Copernic, 7000 Mons, Belgium; (A.B.); (S.L.); (M.P.)
| | - Arnaud Nicolay
- Esix Surface Technologies, 7000 Mons, Belgium; (A.N.); (P.-y.H.)
| | | | - Mireille Poelman
- Materia Nova, ASBL, Parc Initialis, Av. Nicolas Copernic, 7000 Mons, Belgium; (A.B.); (S.L.); (M.P.)
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4
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Hong SH, Cho BG. Effect of Cooling Temperature on Crystalline Behavior of Polyphenylene Sulfide/Glass Fiber Composites. Polymers (Basel) 2023; 15:3179. [PMID: 37571073 PMCID: PMC10420672 DOI: 10.3390/polym15153179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 07/23/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
Poly (phenylene sulfide) (PPS) is a super engineering plastic that has not only excellent rigidity and high chemical resistance but also excellent electrical insulation properties; therefore, it can be applied as an electronic cover or an overheating prevention component. This plastic has been extensively applied in the manufacture of capacitor housing as, in addition to being a functional and lightweight material, it has a safety feature that can block the electrical connection between the electrolyte inside and outside the capacitor. Moreover, the fabrication of PPS composites with high glass fiber (GF) content facilitates the development of lightweight and excellent future materials, which widens the scope of the application of this polymer. However, the crystallinity and mechanical properties of PPS/GF composites have been found to vary depending on the cooling temperature. Although extensive studies have been conducted on the influence of cooling temperature on the crystalline behavior of PPS-based composites, there has been limited research focused particularly on PPS/GF composites for capacitor housing applications. In this study, to apply PPS/GF composites as film capacitor housings, specimens were prepared via injection molding at different cooling temperatures to investigate the composites' tensile, flexural, and impact energy absorption properties resulting in increases in mechanical properties at high cooling mold temperature. Fracture surface analysis was also performed on the fractured specimens after the impact test to confirm the orientation of the GF and the shape of the micropores. Finally, the crystallinity of the composites increased with higher cooling temperatures due to the extended crystallization time.
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Affiliation(s)
| | - Beom-Gon Cho
- Chemical Materials R&D Department, Chassis & Materials Research Laboratory, Korea Automotive Technology Institute, 303 Pungse-ro, Pungse-myeon, Dongnam-gu, Cheonan-si 31214, Republic of Korea;
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5
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Wang J, Zhou W, Guo X, Su M, Ma L. Effects of thermal aging on damage evolution behavior of glass fiber reinforced composites with multilayer graphene by acoustic emission. J Appl Polym Sci 2022. [DOI: 10.1002/app.53524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Jie Wang
- Non‐destructive Testing Laboratory, School of Quality and Technical Supervision Hebei University Baoding China
- National and Local Joint Engineering Research Center of Metrology Instrument and System Hebei University Baoding China
- Hebei Key Laboratory of Energy Metering and Safety Testing Technology Hebei University Baoding China
| | - Wei Zhou
- Non‐destructive Testing Laboratory, School of Quality and Technical Supervision Hebei University Baoding China
- National and Local Joint Engineering Research Center of Metrology Instrument and System Hebei University Baoding China
- Hebei Key Laboratory of Energy Metering and Safety Testing Technology Hebei University Baoding China
| | - Xue‐yin Guo
- Non‐destructive Testing Laboratory, School of Quality and Technical Supervision Hebei University Baoding China
- National and Local Joint Engineering Research Center of Metrology Instrument and System Hebei University Baoding China
- Hebei Key Laboratory of Energy Metering and Safety Testing Technology Hebei University Baoding China
| | - Ming‐ming Su
- Non‐destructive Testing Laboratory, School of Quality and Technical Supervision Hebei University Baoding China
- National and Local Joint Engineering Research Center of Metrology Instrument and System Hebei University Baoding China
- Hebei Key Laboratory of Energy Metering and Safety Testing Technology Hebei University Baoding China
| | - Lian‐hua Ma
- Non‐destructive Testing Laboratory, School of Quality and Technical Supervision Hebei University Baoding China
- National and Local Joint Engineering Research Center of Metrology Instrument and System Hebei University Baoding China
- Hebei Key Laboratory of Energy Metering and Safety Testing Technology Hebei University Baoding China
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6
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Yang G, Zhang M, Su K, Li Z. OPPS Fibers with High Temperature Resistance and Excellent Antioxidant Properties by an Oxidation Method. ACS APPLIED MATERIALS & INTERFACES 2022; 14:50225-50234. [PMID: 36306440 DOI: 10.1021/acsami.2c15777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Polyphenylene sulfide (PPS) fiber products have been widely used for separation and filtration in harsh environments due to their excellent chemical resistance and relatively economical price. However, the poor temperature and weak oxidation resistance of PPS significantly shorten its service life under high temperature and strong oxidation environments. Herein, we report a type of oxidation-modified PPS (OPPS) fibers with excellent high temperature and oxidation resistance. This is achieved by oxidizing the thioether sulfide groups in PPS molecular chains into sulfoxide and sulfone groups and cross-linking the intermolecular chains. Both experiments and density functional theory (DFT) calculations indicate that hypochlorous acid (HClO) molecules can rapidly oxidize the PPS fiber surface. In addition, molecular dynamics (MD) simulations prove that there are strong hydrogen bonds and van der Waals interactions between HClO molecules and OPPS molecular chains, which promote the penetration of HClO molecules into the interior of the fiber to complete the layer-by-layer oxidation. The prepared OPPS-20 fibers exhibit excellent structural stability under high temperature and strong oxidant environments. Impressively, the OPPS-20 nonwoven filter still exhibits a high dust filtration efficiency of 99.95% after aging at 320 °C for 12 h, and the corresponding pressure drop is 24 Pa. In addition, the OPPS-20 nonwoven filter also maintains excellent filtration performance after aging in 60% HNO3 solution for 12 h, and the filtration efficiency and pressure drop are 99.96% and 29 Pa, respectively. This work demonstrates that the novel OPPS fibers have excellent application prospects in the field of separation and filtration in harsh environments.
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Affiliation(s)
- Guofeng Yang
- State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Materials Science and Engineering, Tiangong University, Tianjin300387, P. R. China
| | - Maliang Zhang
- State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Materials Science and Engineering, Tiangong University, Tianjin300387, P. R. China
| | - Kunmei Su
- School of Chemical Engineering and Technology, Tiangong University, Tianjin300387, P. R. China
| | - Zhenhuan Li
- State Key Laboratory of Separation Membranes and Membrane Processes/National Center for International Joint Research on Separation Membranes, School of Materials Science and Engineering, Tiangong University, Tianjin300387, P. R. China
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7
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Simple preparation of ZIF-8 modified polyphenylene sulfide melt-blown film material and its organic dye removal performance. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03109-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Deng J, Song Y, Xu Z, Nie Y, Lan Z. Thermal Aging Effects on the Mechanical Behavior of Glass-Fiber-Reinforced Polyphenylene Sulfide Composites. Polymers (Basel) 2022; 14:polym14071275. [PMID: 35406149 PMCID: PMC9003227 DOI: 10.3390/polym14071275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/13/2022] [Accepted: 03/15/2022] [Indexed: 12/04/2022] Open
Abstract
In this article, the thermal aging behavior of polyphenylene sulfide (PPS) composites, reinforced by 20% glass fibers (GFs), in thermal aging temperatures ranging from 85 to 145 °C was studied. Tensile and bending properties and color changes in the thermally aged samples were investigated. The results showed that thermal aging at this temperature range resulted in the degradation of mechanical properties. Both the tensile and flexural strength of the GF/PPS composites were significantly reduced after thermal aging at 145 °C. Decreased strength and brittle fracture were observed because thermal aging at high temperatures resulted in the deterioration of the interfaces between the GFs and PPS matrix. The degradation of the mechanical properties of the composite samples can be reflected by the color change, which means that the mechanical properties of the GF/PPS composite samples under thermal aging are predictable using color change analysis.
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Affiliation(s)
- Jiangang Deng
- Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute, Wuhan 430074, China; (J.D.); (Y.S.); (Z.X.); (Y.N.)
- State Grid Electric Power Research Institute, Nanjing 210000, China
| | - You Song
- Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute, Wuhan 430074, China; (J.D.); (Y.S.); (Z.X.); (Y.N.)
- State Grid Electric Power Research Institute, Nanjing 210000, China
| | - Zhuolin Xu
- Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute, Wuhan 430074, China; (J.D.); (Y.S.); (Z.X.); (Y.N.)
- State Grid Electric Power Research Institute, Nanjing 210000, China
| | - Yu Nie
- Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute, Wuhan 430074, China; (J.D.); (Y.S.); (Z.X.); (Y.N.)
- State Grid Electric Power Research Institute, Nanjing 210000, China
| | - Zhenbo Lan
- Wuhan Nari Limited Liability Company of State Grid Electric Power Research Institute, Wuhan 430074, China; (J.D.); (Y.S.); (Z.X.); (Y.N.)
- State Grid Electric Power Research Institute, Nanjing 210000, China
- Correspondence:
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9
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Yan P, Peng W, Yang F, Cao Y, Xiang M, Wu T, Fu Q. Investigation on thermal degradation mechanism of poly(phenylene sulfide). Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.109863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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10
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Thermal properties and hydrophilicity of antibacterial poly(phenylene sulfide) nanocomposites reinforced with zinc oxide-doped multiwall carbon nanotubes. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02931-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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11
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Montagna LS, Kondo MY, Callisaya ES, Mello C, Souza BRD, Lemes AP, Botelho EC, Costa ML, Alves MCDS, Ribeiro MV, Rezende MC. A review on research, application, processing, and recycling of PPS based materials. POLIMEROS 2022. [DOI: 10.1590/0104-1428.20210108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Effect of Thermal Aging on Mechanical Properties and Color Difference of Glass Fiber/Polyetherimide (GF/PEI) Composites. Polymers (Basel) 2021; 14:polym14010067. [PMID: 35012089 PMCID: PMC8747404 DOI: 10.3390/polym14010067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/27/2021] [Accepted: 11/29/2021] [Indexed: 11/16/2022] Open
Abstract
This research study is aimed at evaluating the mechanical characteristics in terms of tensile strength and flexural strength of glass fiber reinforced Polyetherimide (GF/PEI) under different thermal aging. Tensile testing and bending testing were performed on the thermally aged polyetherimide composites. The mechanical properties of the thermally aged samples were also correlated with their color difference. The experimental results showed that both the tensile strength and flexural strength of the GF/PEI composite samples decreased with increasing aging temperature. However, the elastic modulus of the composite samples is nearly independent on the thermal aging. The thermally aged samples exhibited brittle fracture, resulting in low strength and low ductility. The loss in strength after thermal aging could be also linked to the change of their color difference, which can indirectly reflect the change of the strength for the composites after thermal aging.
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13
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He Y, Li P, Ren H, Zhang X, Chen X, Yan Y. The fabrication and neutron shielding property of polyphenylene sulfide containing salicylic acid/Gd2O3 composites. HIGH PERFORM POLYM 2021. [DOI: 10.1177/09540083211021492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A series of neutron absorbing materials with good neutron absorbing capacity, high strength and good thermal property were designed and prepared in this work. First of all, polyphenylene sulfide containing different mole content of salicylic acid (SAPPS) in the main chain was synthesized by nucleophilic substitution polymerization under high pressure. Then the composites with different content of nano Gd2O3 and modified PPS were prepared by melt blending method. The testing results indicated that the copolymers SAPPS were synthesized successfully, there was an interface interaction between nano Gd2O3 and the matrix without the need for surfactants or coupling agents. Additionally, the content of nano Gd2O3 had no obvious influence on the thermal property of the composites. While following with the increase of the content of nano Gd2O3, the tensile strength of the composites increased firstly and then decreased, when the content of nano Gd2O3 was 10 wt%, the tensile strength of 10%Gd2O3/5%SAPPS reached the maximum value of 74.9 MPa. The results of neutron shielding testing indicated that the content of nano-particles had a large effect on the neutron shielding rate of composites. The neutron shielding rate of 50%Gd2O3/5%SAPPS composite was up to 83%. All of these results indicated that the Gd2O3/5%SAPPS had potential to be applied to the high-temperature resistance and thermal shielding materials in nuclear and aerospace applications.
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Affiliation(s)
- Yumin He
- College of Physics, Sichuan University, Chengdu, China
| | - Pengcheng Li
- College of Physics, Sichuan University, Chengdu, China
| | - Haohao Ren
- College of Physics, Sichuan University, Chengdu, China
| | - Xi Zhang
- College of Physics, Sichuan University, Chengdu, China
| | - Xiulian Chen
- College of Physics, Sichuan University, Chengdu, China
| | - Yonggang Yan
- College of Physics, Sichuan University, Chengdu, China
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