Effect of Radiation-Induced Cross-Linking on Thermal Aging Properties of Ethylene-Tetrafluoroethylene for Aircraft Cable Materials

Zhang, Xiaodong; Chen, Fei; Su, Zhimin; Xie, Taiping

doi:10.3390/ma14020257

Cited by 7 publications

(4 citation statements)

References 22 publications

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“…an increase in crystallinity [11,[28][29][30]. This is consistent with the XRD analysis of the crystallization behavior of the PPS/GF composites at different cooling temperatures.…”

Section: Thermal Properties Of Pps/gf Compositessupporting

confidence: 86%

“…As shown in Figure 3, the melting points (T m ) and crystallization temperatures (T c ) of the PPS composites at each cooling temperature exhibited similar trends and gradually increased. The higher the cooling temperature, the finer were the densely stacked crystals; moreover, the melting enthalpy increases, resulting in an increase in crystallinity [11,[28][29][30]. This is consistent with the XRD analysis of the crystallization behavior of the PPS/GF composites at different cooling temperatures.…”

Section: Thermal Properties Of Pps/gf Compositessupporting

confidence: 85%

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Effect of Cooling Temperature on Crystalline Behavior of Polyphenylene Sulfide/Glass Fiber Composites

Hong

Cho

2023

Polymers

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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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“…an increase in crystallinity [11,[28][29][30]. This is consistent with the XRD analysis of the crystallization behavior of the PPS/GF composites at different cooling temperatures.…”

Section: Thermal Properties Of Pps/gf Compositessupporting

confidence: 86%

Section: Thermal Properties Of Pps/gf Compositessupporting

confidence: 85%

Effect of Cooling Temperature on Crystalline Behavior of Polyphenylene Sulfide/Glass Fiber Composites

Hong

Cho

2023

Polymers

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“…This is because the linear or branched molecular structures of thermoplastics become more brittle during thermal aging [ 36 ]. Researchers attributed this to the cross-linking and crystallinity, which depended on the temperature and the exposure time, as reported by Zhang et al [ 37 ] and Lee et al [ 38 ]. Molecular chain scission, post-crosslinking, and crystallinity increment also occur in the GF/PPS composite samples during thermal aging [ 39 ].…”

Section: Resultsmentioning

confidence: 84%

Thermal Aging Effects on the Mechanical Behavior of Glass-Fiber-Reinforced Polyphenylene Sulfide Composites

Deng

Song

et al. 2022

Polymers

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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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“…According to the thermogravimetric analysis of X-ETFE insulation materials for aviation in Morelli et al, 30 Zen et al, 31 and Zhang et al 32 the X-ETFE insulation materials begin to decompose when the temperature reaches 350°C, and slight discoloration occurs on the surface of the material. When the temperature reaches 550°C, the decomposed insulating material is almost completely gasified.…”

Section: Resultsmentioning

confidence: 99%

Study on the optimal process parameters for stripping the X-ETFE insulation layer of aviation wires by a small semiconductor laser

Zhou

Huang

et al. 2022

Advances in Mechanical Engineering

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A reasonable laser wire stripping process parameter set is a prerequisite for high-quality and high-efficiency wire stripping. For the X-ETFE insulated wire used in aviation, this study explores the method of obtaining the optimal stripping process parameters based on a 405 nm wavelength semiconductor laser. Build energy conversion model, mobile heat source model, and finite element simulation numerical model of the laser stripping insulating layer process. Based on the single-factor analysis method, simulate the effect of laser power, scanning speed, and processing time on the kerf width, heat-affected zone width, and cutting seam depth of the insulating layer. The results show that increasing the laser power to improve the stripping efficiency will also increase the width of the kerf and heat-affected zone, and increasing the scanning speed can effectively reduce the kerf width. A reasonable combination of laser power and scanning speed can improve stripping efficiency while ensuring quality. According to the single-factor simulation analysis results, select the possible value levels for each parameter to carry out the actual laser wire stripping orthogonal test. There is a good correspondence between the range analysis results of the test data of each stripping quality evaluation index and the conclusions obtained from the single-factor simulation, which verifies the reliability of getting the optimal combination of laser stripping process parameters through the orthogonal test.

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Effect of Radiation-Induced Cross-Linking on Thermal Aging Properties of Ethylene-Tetrafluoroethylene for Aircraft Cable Materials

Cited by 7 publications

References 22 publications

Effect of Cooling Temperature on Crystalline Behavior of Polyphenylene Sulfide/Glass Fiber Composites

Effect of Cooling Temperature on Crystalline Behavior of Polyphenylene Sulfide/Glass Fiber Composites

Thermal Aging Effects on the Mechanical Behavior of Glass-Fiber-Reinforced Polyphenylene Sulfide Composites

Study on the optimal process parameters for stripping the X-ETFE insulation layer of aviation wires by a small semiconductor laser

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