The Effect of Polyurethane Glycolysate on the Structure and Properties of Natural Rubber/Carbon Black Composites
TL;DR: In this article, the use of polyurethane chemical recycling product (i.e., glycolysis of polyuredane waste realized with the mass excess of polymer) as a plasticizer for natural rubber-based composites was proposed.
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Abstract: In this work the use of polyurethane chemical recycling product (i.e. glycolysis of polyurethane waste realized with the mass excess of polymer) as a plasticizer for natural rubber-based composites was proposed. The effect of plasticizer type (napthenic oil and polyurethane foam glycolysate) and amount (2, 4, 6 or 8 parts per 100 parts of natural rubber) on the processing properties of rubber mixtures and chemical structure, swelling, mechanical and thermo-mechanical properties of natural rubber/carbon black composites was investigated. The effect of applied plasticizer was studied in the context of accelerated thermal aging (thermo-oxidative aging) which was applied for the prepared natural rubber-based composites. The obtained results confirm that the polyurethane foam glycolysate can be successfully used as a plasticizer for the preparation of natural rubber composites. Moreover, it was found that glycolysate acts as a vulcanization accelerator and reduces decreasing of mechanical properties during the accelerated thermal aging.
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Citations
Recent Progress in the Accelerated Aging and lifetime Prediction of Elastomers : A review
TL;DR: In this article , the authors collected and compared the works carried out during the past two decades on the accelerated aging of elastomers to form a reference for future work, which helps us to understand the problem with the formulation and to know the proper time to change the elastomer parts used in applications that are not easy to inspect.
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Waste Polyurethane Reinforced Polyester Composite, Production, and Characterization
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Effect of protein on the thermogenesis performance of natural rubber matrix.
TL;DR: It is found that when the protein is almost removed, the heat generated by the vulcanized rubber increases rapidly, and after adding soy protein isolate to the secondary purification rubber, theHeat generation of the vulCANized rubber is reduced, and the heat generation is the lowest when the added amount is low.
Determination of thermo-mechanical properties of recycled polyurethane from glycolysis polyol
James K. Njuguna,Peter Muchiri,Fredrick Madaraka Mwema,Nancy Wangechi Karuri,Michael Herzog,Kiril Dimitrov +5 more
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TL;DR: In this article, the authors measured the glass transition temperatures (Tg) using differential scanning calorimetry (DSC) to determine the possible changes in thermo-mechanical properties between rigid polyurethane prepared using polyols derived from depolymerization of commercial polyurethsane foam with benchmark rigid polyuresthane (Ben PU).
Low molecular weight ‘liquid’ polymer extended compounds, impact on free volume and crosslink density studied by positron lifetime spectroscopy and stress-strain analysis according to Mooney-Rivlin
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