Thermally Bonded PET–Basalt Sandwich Composites for Heat Pipeline Protection: Preparation, Stab Resisting, and Thermal-Insulating Properties

Li, Ting‐Ting; Zhang, Xiayun; Peng, Hao‐Kai; Jiang, Qian; Dai, Wenna; Lou, Ching‐Wen; Lin, Jia‐Horng

doi:10.3390/app8040510

Cited by 9 publications

(4 citation statements)

References 22 publications

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“…For future testing, some sort of guarded hot plate setup [23,24], for heat exposure of the thermal insulation, may be considered. At lower temperatures this was done for developing pipeline thermal insulation by Li, et al [25], who also investigated their new low temperature thermal insulation properties by DSC. A guarded hot plate approach simulating the fire exposure may allow for more controlled heat exposure and more detailed analysis of the thermal insulation behavior during the heat exposure.…”

Section: Suggestions For Future Studiesmentioning

confidence: 99%

Study of Industrial Grade Thermal Insulation as Passive Fire Protection up to 1200 °C

Bjørge

Gunnarshaug

Log

et al. 2018

Safety

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It has recently been demonstrated that 50 mm thick industrial grade thermal insulation may serve as passive fire protection of jet fire exposed thick walled steel distillation columns. The present study investigates the performance of thermal insulation in conjunction to 3 mm, 6 mm, 12 mm and 16 mm steel walls, i.e., where the wall represents less heat sink, when exposed to 350 kW/m2 heat load. Regardless of the tested steel plate thicknesses, about 10 min passed before a nearly linear steel temperature increase versus time was observed. Thereafter, the thinnest plates systematically showed a faster temperature increase than the thickest plates confirming the wall heat sink effect. To study thermal insulation sintering, 50 mm thermal insulation cubes were heat treated (30 min holding time) at temperatures up to 1100 °C. No clear sign of melting was observed, but sintering resulted in 25% shrinkage at 1100 °C. Thermogravimetric analysis to 1300 °C revealed mass loss peaks due to anti-dusting material at 250 °C and Bakelite binder at 460 °C. No significant mass change occurred above 1000 °C. Differential scanning calorimetry to 1300 °C revealed endothermic processes related to the anti-dusting material and Bakelite mass losses, as well as a conspicuous endothermic peak at 1220 °C. This peak is most likely due to melting. The endothermic processes involved when heating the thermal insulation may to a large part explain the 10 min delay in steel plate temperature increase during fire testing. Overall, the tested thermal insulation performed surprisingly well also for protecting the thin steel plates.

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Section: Suggestions For Future Studiesmentioning

confidence: 99%

Study of Industrial Grade Thermal Insulation as Passive Fire Protection up to 1200 °C

Bjørge

Gunnarshaug

Log

et al. 2018

Safety

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“…As the knife blade deepens, the above process is repeated and simultaneously the knife stress value fluctuated until the crack reaches the maximum. Afterwards, the knife is no longer subjected to external forces, and the stress value drops sharply [36]. The maximum crack after knife stab can be confirmed by Figure 11(b) and (c)for SM12 plain aramid fabrics.…”

Section: Resultsmentioning

confidence: 87%

Rheological response and quasi-static stab resistance of STF/MWCNTs-impregnated aramid fabrics with different textures

Cen

Peng

et al. 2019

Journal of Industrial Textiles

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Terrorist attacks occur constantly, which subsequently arouses awareness of self-protection. In order to alleviate the harm caused by sharp objects of knives and daggers, a design of flexible stab-resistant materials that are impregnated with the shear thickening fluid (STF)/multi-walled carbon nanotubes (MWCNTs) system and different texture of fabrics is presented. STF/MWCNTs are composed of polyethylene glycol (PEG 200) as the dispersion medium and silica (SiO2) of 12 nm and 75 nm as disperse phase as well as MWCNTs as supplementary reinforcement, in expectation to provide the aramid fabrics with high strengths, low critical shear rate, and a short thickening response time. The textures of aramid fabrics—plain (P), twill (T), satin (S), or basket (B) weave—are saturated in the STF/MWCNTs system. The synergetic influences of silica size and texture on tensile strength, quasi-static knife, and spike stab resistances of the STF/MWCNTs-impregnated aramid fabrics are examined. Results show that the plain aramid fabric immersed in the STF/MWCNTs system containing 12 nm SiO2(SM12) exhibit the maximum tensile strength and quasi-static knife stab resistance, 14.7 MPa and 8.9 MPa, respectively, which is 1.15 and 1.43 times higher than pure aramid fabrics. Moreover, the basket-weave aramid fabric immersed in the STF/MWCNTs system containing 12 nm SiO2have the maximum quasi-static spike stab resistance of 17.12 MPa compared to other textures of fabrics, which is 1.05 times higher than those immersed in the 75 nm SiO2STF/MWCNTs (SM75) system and 1.33 times higher than that of pure basket aramid fabrics.

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“…The knife-shaped head first exerts a shear action over the yarns and then breaks the yarns. When the stab force reaches the maximum, the friction force resists the stab primarily [29]. Figure 9(b) shows that there are four stages involved.…”

Section: Resultsmentioning

confidence: 99%

Effects of bi-particle-sized shear thickening fluid on rheological behaviors and stab resistance of Kevlar fabrics

Zhang

Peng

et al. 2020

Journal of Industrial Textiles

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In this paper, the shear-thickening fluids(STFs) are prepared by 0.5 µm and 12 nm silica particles. The STFs rheological properties and the performance of stab resistance are studied. SiO2 particles with two sizes (12 nm and 0.5 µm) are mixed at different weight ratios to form shear thickening fluids and its rheological behaviors are tested. Next, the quasi-static spike and knife stab resistances, dynamic impact strength, and yarn pull-out of shear thickening fluid-impregnated Kevlar fabrics are tested. The investigation showed that the micro- and nano-sized particles of silica are present in the compound shear thickening fluid, and the rheological behavior was positively improved. Regardless of whether shear thickening fluid is composed of mono-sized or binary particle-sized SiO2 particles, the presence of shear thickening fluids can significantly strengthen Kevlar fabrics in terms of the quasi-static spike and knife stab resistances, dynamic impact strength, and promote the friction force of inter-yarn. In particular, shear thickening fluid-impregnated Kevlar fabrics have better performances when being composed of 12 nm and 0.5 µm SiO2 particles at ratios of 2:1, 1:1, and 1:2 than when being made of only micro-sized or nano-sized particles.

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Thermally Bonded PET–Basalt Sandwich Composites for Heat Pipeline Protection: Preparation, Stab Resisting, and Thermal-Insulating Properties

Cited by 9 publications

References 22 publications

Study of Industrial Grade Thermal Insulation as Passive Fire Protection up to 1200 °C

Study of Industrial Grade Thermal Insulation as Passive Fire Protection up to 1200 °C

Rheological response and quasi-static stab resistance of STF/MWCNTs-impregnated aramid fabrics with different textures

Effects of bi-particle-sized shear thickening fluid on rheological behaviors and stab resistance of Kevlar fabrics

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