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Effects of Recycled Polyethylene on Natural Rubber Composite Blends Filled with Aluminum Trihydroxide and Polyurethane Waste: Mechanical and Dynamic Mechanical Properties, Flammability
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Researchers formulated natural rubber composites combining recycled polyethylene, polyurethane waste, silica, and aluminum trihydroxide, finding that silica and ATH together improved both mechanical performance and flame retardancy, while polyurethane waste helped prevent flame spread — producing V-0 rated materials suitable for building applications.
This research studies natural rubber (NR) composite blends prepared with recycled polyethylene (PE), polyurethane waste (PU), silica (SiO2), and aluminum trihydroxide (ATH) under the proper mixing conditions using an internal mixer and a two-roll mill. The mechanical, impact, dynamic mechanical, and thermal properties, together with flammability, were investigated. NR/PU composites filled with a specific SiO2/ATH concentration resulted in excellent flame-retardant properties without using PE. Adding PE causes poor flammability, while using PU and SiO2 prevents flame extensibility of the composites. In addition, SiO2 and ATH synergistically improved both mechanical and dynamical mechanical properties. This is attributed to the reinforcement of SiO2 particles inside the matrix, whereas the ATH releases water as a flame retardant. The V-0 composites tested with UL-94 showed acceptable heat resistance, strength, and durability, making them suitable for interior and exterior applications in buildings without the lightweight requirement.
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Biodegradable Polymer Materials Based on Polyethylene and Natural Rubber: Acquiring, Investigation, Properties
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Researchers developed biodegradable polymer materials by blending polyethylene with natural rubber to create more environmentally friendly alternatives to conventional synthetic packaging materials, investigating the acquisition methods, structural properties, and performance characteristics of the resulting composites.
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Researchers incorporated chemically treated ground tire rubber powder into flexible polyurethane foam and found that adding 20% by weight improved both thermal and mechanical properties while shifting sound absorption toward lower frequencies, suggesting potential applications in noise reduction and underwater acoustics.
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Researchers evaluated thermal, chemical, and mechanical recycling methods for ground tire rubber from end-of-life tires to improve its compatibility in thermoplastic vulcanizate (TPV) composites, finding that optimizing recycling procedures and vulcanization systems reduced interfacial issues and produced materials with competitive mechanical properties for automotive and construction applications.
The Effect of the Recycling Process on the Performance of Thermoplastic Vulcanizates Containing Recycled Rubber from End-of-Life Tires
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This study applied thermal, chemical, and mechanical recycling methods to ground tire rubber powder from end-of-life tires and evaluated the resulting thermoplastic vulcanizates, finding that optimized recycling processes can improve interfacial compatibility and mechanical properties enough to yield industrially competitive rubber products.
Natural Rubber Latex-Modified Concrete with PET and Crumb Rubber Aggregate Replacements for Sustainable Rigid Pavements
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Researchers tested concrete mixes that replaced conventional aggregates with recycled PET plastic and crumb rubber waste, modified with natural rubber latex. The results show that waste plastic can be incorporated into road pavement concrete, offering a way to divert plastic waste from landfills while creating durable construction materials.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.