Kevlar Fiber Reinforced Composites Based on Waste Polyethylene: Impact of Ethylene‐Vinyl Acetate and Gamma Irradiation

Elnaggar²,

et al. 2021

Preprint

Self Cite

With the remarkable increase in whether heat in many countries, many scientific researchers aim to deal with this problem by developing polymeric materials that have good mechanical and thermal properties and are resistant to heat and fire. Polyvinyl chloride is used for decoration and construction materials. This article goals to the usage of waste polyvinyl chloride (WPVC) as based polymer composites containing zinc borate particles (ZnB) prepared via two different techniques equipped by melt mixing WPVC/ZnB (M) and casting WPVC/ZnB (C). The fabricated composites by the two methods were irradiated in an electron beam accelerator (EB) at 30 kGy. A comparative study of the mechanical, and thermal properties, as well as the rate of heat burning for the two methods, has been performed. Furthermore, activation energy calculation, FTIR, and XRD have been considered. The observed improvement in the mechanical, thermal, and flammability behavior of the samples was reached by the incorporation of ZnB particles and EB irradiation. Also, composites films prepared by melt mixing reveal superior properties than those equipped by casting for the most investigated factors.

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 94%

Section: Thermogravimetric Analysis (Tga)mentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Zinc Borate Composites Based on Recycled PVC Wastes Via Comparing Melt Mixing and Casting Procedures Under the Effect of Electron Beam Irradiation

Elnaggar²,

et al. 2021

Preprint

Self Cite

“…Numerous examinations were implemented on the influence of ionizing rays on polymers. [18][19][20][21] X-rays and gamma rays are self-possessed of photons in the electromagnetic range, whereas electron beams stand a particulate radiation with an altered energy level. 22 Electron beam radiation has many benefits such as: (a) relatively short procedure time, (b) in-line development, (c) highly operative, (d) includes rare variables, (e) low temperature, (f) small release period, (g) low apparatus cost and (h) orderly dose.…”

Section: Introductionmentioning

confidence: 99%

Thermal aging and automotive oil effects on the performance of electron beam irradiated styrene butadiene rubber/waste and microwave devulcanized rubber blends

Progress in Rubber, Plastics and Recycling Technology

Aal

2022

Self Cite

Replacement of virgin polymer with its waste become one of the special technique that capture the efforts of many researchers and industrialists alike. In this context, this work discussed the partial replacement of waste tire rubber (WR) and microwave devulcanized rubber (DWR) at different ratios on the properties of virgin styrene butadiene rubber (SBR) as one of the most essential components of synthetic rubber in the tire production. Fixed percent of tetramethylthiuram disulfide and spindle oil were added at the first, then the WR mixture was exposed to different microwave times. Microwave devulcanization value at time 6 min gave the highest devulcanization percent. The prepared blends were exposed in an electron beam accelerator (EB) at 50 and 100 kGy. FTIR, different mechanical parameters, thermal stability (TGA) and scanning electron microscopy of the fabricated specimens have been explained. Effect of automotive oil and thermal aging at different temperature, 70oC and 100oC on the tensile strength and elongation at break (E%) of the unirradiated and irradiated prepared blends have been estimated. Mechanical measurements of all examined specimens after thermal aging and oil immersion were least affected. Moreover, these factors before and after oil dipping and thermal aging revealed that unirradiated and irradiated SBR/DWR blends have superior properties than SBR/WR.

“…Several studies were interested in the effect of ionizing radiation on polymers. [6][7][8] X-rays and gamma rays are composed of photons in the electromagnetic spectrum, while electron beams are particulate radiation with a different energy level. 9 Electron beam irradiation has various advantages for example: (a) comparatively short process time, (b) in-line process, (c) very effective, (d) includes few variables, (e) low heat, (f) short release time, (g) low equipment cost and (h) controlled dose.…”

Section: Introductionmentioning

confidence: 99%

Zn[B₃O₄(OH)₃] composites fabrication based on PVC pipes scrap via comparing melt mixing and casting procedures under the effect of electron beam irradiation

Elnaggar

Progress in Rubber, Plastics and Recycling Technology

et al. 2022

Self Cite

In several works, scientific researchers targeted the development of polymeric materials with good mechanical and thermal properties and resist heat and fire propagation. In a new approach, this article goals to the usage of waste polyvinyl chloride (WPVC) based polymer composites derived from PVC pipes scrap filled with fixed percent of zinc borate particles (ZnB), which were prepared via two different techniques named melt mixing WPVC/ZnB (M) and casting WPVC/ZnB (C). The fabricated composites by the two methods were irradiated in an electron beam accelerator (EB) at 30 kGy. A comparative study of the thermal and mechanical properties based on stress-strain curves, tensile strength (TS), elongation at break (E %), and tear strength were evaluated. Furthermore, the rate of heat burning (%) for the two methods has been performed. Moreover, differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA), Infrared spectroscopy analysis (FTIR), X-ray diffraction (XRD), and the activation energy (Ea) calculation of the prepared samples have been considered. The observed improvements in the mechanical, thermal, and flammability behavior of WPVC were succeeded by incorporating ZnB particles. The irradiated WPVC loaded with zinc borate presented a superior flame propagation fraction when matched with their corresponding unirradiated composites. Also, WPVC composite films prepared via the melt mixing method reveal more excellent properties than those equipped by the casting process for the most investigated factors.