Prediction of the coefficient of thermal expansion of building materials based on polyvinyl chloride

Wang, C.; Кондращенко, В. И.; Matseevich, Andrey

doi:10.1088/1742-6596/1425/1/012094

Cited by 5 publications

(3 citation statements)

References 3 publications

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“…high temperature. Ti6Al4V shows indeed a specific heat of Sensitivity Dimensions [22] 5 fF/g 0.4 x 0.6 x 0.1 mm 3 [23] 8.7 pF/g 4 x 4 x 0.59 mm 3 [12] 33.16 fF/g 30.4 x 9 x 2 mm 3 [12] 31.44 fF/g 22.4 x 9 x 2 mm 3 [this work] 184 fF/g 28 x 23 x 15 mm 3 553J/Kg K, a thermal conductivity of 6.6-6.8W/m K and a thermal expansion coefficient of 8.6•10 -6 K -1 [24], that guarantee a much better thermal behavior than polymer based sensors, whose thermal expansion coefficients are usually at least one order of magnitude bigger [33]- [34] and that can only operate far below the glass-transition temperature [35]. A different consideration must be done if we want to compare metal sensors as the one here proposed, with polymer based sensors metallized through a Cu layer [12]- [14].…”

Section: Discussionmentioning

confidence: 99%

A 3D Printed Ti6Al4V Alloy Uniaxial Capacitive Accelerometer

et al. 2021

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3D-printing techniques are attracting a lot of interest in the sensors community as promising fabrication processes that guarantees customizability at low costs. In this work, the first uniaxial Ti6Al4V alloy accelerometer is designed, fabricated through the Laser Powder Bed Fusion (L-PBF) technique and tested. Experimental tests under accelerations show good agreement with theoretical predictions. With a differential sensitivity of 184fF/g and relative low dimensions (features as low as 500µm), the proposed accelerometer opens the path to a new class of 3D-printed metal sensors with high-performance, customizability and low-cost.

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Section: Discussionmentioning

confidence: 99%

A 3D Printed Ti6Al4V Alloy Uniaxial Capacitive Accelerometer

et al. 2021

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“…6b, at representative temperatures of the material, alpha 1 represents the CLTE at temperatures below Tg and alpha 2 represents the coefficient of thermal expansion for temperatures above Tg. It was found that the coefficient of thermal expansion CLTE decreases 70% under the Tg, for the PC sterilized by dry heat, After Tg, the CLTE of the PC with the two sterilization processes are practically the same, the change in the slope of the curves Expansion below and above Tg is related to the expansion of the free volume [44]. The coefficients of thermal expansion found differ from those presented according to [45] for PC (110-130 μm / (m • ° C)), this difference can be attributed to the fact that 3D printing has free space in its structure despite of a 100% print fill density.…”

Section: Resultsmentioning

confidence: 96%

Effects of Steam Heat and Dry Heat Sterilization on Thermal and Mechanical Properties of Nylon and Policarbonate in Fabrication with Fused Filament

Fuentes

Unda²,

Bou

et al. 2021

KEM

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In this article presents evidence about performance of mechanical properties of polycarbonate and nylon materials, which are used in the additive manufacturing by deposition of molten material and that have been subjected to sterilization processes by moist heat at 121°C and dry heat at 140°C. This study provides useful information to consider the use of these materials in sanitary and sterile settings. Mechanical tests of tensile, flex, hardness, Izod impact, thermal tests in Differential Scanning Calorimetry DSC, Thermomechanical analysis TMA and Scanning Electron Microscopy SEM were performed. It is concluded that the mechanical and thermal properties have not been altered through the effect of temperature in sterilization processes.

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“…However, due to their high coefficient of thermal expansion, plastics tend to change their dimensions significantly, which is a problem that must be considered for certain applications [61]. Furthermore, they are poor thermal conductors in general.…”

Section: Thermal Propertiesmentioning

confidence: 99%

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

et al. 2021

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Plastics are ubiquitous in our society and are used in many industries, such as packaging, electronics, the automotive industry, and medical and health sectors, and plastic waste is among the types of waste of higher environmental concern. The increase in the amount of plastic waste produced daily has increased environmental problems, such as pollution by micro-plastics, contamination of the food chain, biodiversity degradation and economic losses. The selective and efficient conversion of plastic waste for applications in environmental remediation, such as by obtaining composites, is a strategy of the scientific community for the recovery of plastic waste. The development of polymeric supports for efficient, sustainable, and low-cost heterogeneous catalysts for the treatment of organic/inorganic contaminants is highly desirable yet still a great challenge; this will be the main focus of this work. Common commercial polymers, like polystyrene, polypropylene, polyethylene therephthalate, polyethylene and polyvinyl chloride, are addressed herein, as are their main physicochemical properties, such as molecular mass, degree of crystallinity and others. Additionally, we discuss the environmental and health risks of plastic debris and the main recycling technologies as well as their issues and environmental impact. The use of nanomaterials raises concerns about toxicity and reinforces the need to apply supports; this means that the recycling of plastics in this way may tackle two issues. Finally, we dissert about the advances in turning plastic waste into support for nanocatalysts for environmental remediation, mainly metal and metal oxide nanoparticles.

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Prediction of the coefficient of thermal expansion of building materials based on polyvinyl chloride

Cited by 5 publications

References 3 publications

A 3D Printed Ti6Al4V Alloy Uniaxial Capacitive Accelerometer

A 3D Printed Ti6Al4V Alloy Uniaxial Capacitive Accelerometer

Effects of Steam Heat and Dry Heat Sterilization on Thermal and Mechanical Properties of Nylon and Policarbonate in Fabrication with Fused Filament

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

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