Temperature and humidity aging of poly(p-phenylene-2,6-benzobisoxazole) fibers: Chemical and physical characterization

Chin, Jik; Forster, Amanda L.; Clerici, Cyril; Sung, Li‐Piin; Oudina, Mounira; Rice, Kirk D.

doi:10.1016/j.polymdegradstab.2007.03.030

Cited by 69 publications

(61 citation statements)

References 20 publications

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“…The samples were mounted in the cells and irradiated for 36, 72, 108 and 154 h. To monitor temperature and relative humidity more accurately in the large chamber area, a number of temperatures and RH sensors were distributed throughout the interior of the chamber as well as in the interior of the panels. The temperature and RH sensor data were logged and stored via a data acquisition system and a desktop computer [17][18][19].…”

Section: Light Agingmentioning

confidence: 99%

Effect of Museum Conditions on Historical Dyed Silk Fabric with Madder Dye

Ahmed

Darwish

2012

J Polym Environ

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Historical textiles suffer from deterioration as a result of exposure to uncontrolled environmental conditions in museums. To establish standard conditions for display of undyed and dyed silk fabrics in Egyptian museums, different artificial aging procedures (thermal, light and chemical) were applied to examine their effects on the physical, mechanical and chemical structure of the silk fiber. Samples of undyed silk and silk dyed with madder with different mordants, iron II sulphate; iron III chloride and copper sulphate were used for this purpose. These aged samples were examined for their surface morphology, color parameters (CIE Lab), mechanical properties, degree of crystallinity, secondary structure analysis and amino acids content.

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Section: Light Agingmentioning

confidence: 99%

Effect of Museum Conditions on Historical Dyed Silk Fabric with Madder Dye

Ahmed

Darwish

2012

J Polym Environ

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“…TGC was calculated as follows TGC ¼ S Â 7:4ð24 h=YÞ (2) where Y is the amount of time per d that the turnout gear is exposed to sunlight (h), TGC is the number of days the turnout gear is exposed to Y h of sunlight, and the other parameters are described above. Assuming that in 1 d of routine activities the turnout gear is exposed to the experimental conditions for 1 h …”

Section: Uv Irradiationmentioning

confidence: 99%

“…Chin et al [2] has shown that poly(p-phenylene-2,6-benzobisoxazole) fibers lost 30% tensile strength after a sequential exposure of 50 C/60% relative humidity (RH) for 84 d and 60 C/37% RH for 73 d. Attenuated Total Reflectance Infrared (ATR-IR) spectral analysis revealed with increasing exposure duration that there was an increase in benzoxazole ring cleavage (loss of 914 cm À1 , 1056 cm À1 , and 1362 cm À1 peak) and an increase in acid, alcohol, and amine group formation (1690 cm À1 , 3300 cm À1 ). The impact of ultraviolet (UV) irradiation was not investigated.…”

Section: Introductionmentioning

confidence: 99%

Accelerated weathering of polyaramid and polybenzimidazole firefighter protective clothing fabrics

Davis

Chin

Lin

et al. 2010

Polymer Degradation and Stability

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“…It should be noted that polymeric materials are often completely water-tight but still allow the humidity diffusion [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Changes of Insulation Properties of Photovoltaic Cables Caused by Ageing Treatment

Packa

Kujan

Štrkula

et al. 2020

TEE

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-An important part of the photovoltaic power plants are cable systems. The dielectric properties of cables, reliability and durability depend on quality of production processes, operating conditions and degradation factors, as well. Expected lifetime of the cable systems is more than 20-30 years in general. Their failure free operation and longterm stability of properties has a direct impact on the economic return of the investments. According to our experiences the tests in compliance with valid standards are not adequate to verify the real life time during operation. The photovoltaic cables intended for use in outdoor applications for the connection between the solar panels and possible connection between panels and inverter were chosen for our experiments. The changes of the insulation resistance and breakdown voltage caused by some degradation factors, mainly water, are presented. This research was inspired by a real failure in operation.

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Temperature and humidity aging of poly(p-phenylene-2,6-benzobisoxazole) fibers: Chemical and physical characterization

Cited by 69 publications

References 20 publications

Effect of Museum Conditions on Historical Dyed Silk Fabric with Madder Dye

Effect of Museum Conditions on Historical Dyed Silk Fabric with Madder Dye

Accelerated weathering of polyaramid and polybenzimidazole firefighter protective clothing fabrics

Changes of Insulation Properties of Photovoltaic Cables Caused by Ageing Treatment

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