Modified Polyethylene Foam for Critical Environments

Abstract

One of the most important priorities for all countries with property beyond the Arctic Circle and territories located in permafrost areas is the development of special construction technologies and systems. The required conditions are met by insulation systems based on seamless insulation shells made of polyethylene foam. The study of the strength and performance properties of polyethylene foam and its combinability was carried out according to standard methods and using the methods of experimental design and the analytical processing of the results. The change in material properties at negative temperatures was determined based on the results of climatic tests, followed by an evaluation of creep under load. The evaluation of the effectiveness of the design solutions was carried out using special computer programs. It was found that the performance characteristics of products made of polyethylene foam (rolls, mats) meet the requirements for insulation materials used at temperatures down to −60 °C. The resulting material is moderately combustible, which must be taken into account when developing recommendations for its use in insulation systems. A nomogram has been developed that makes it possible to predict the properties of a material and solve formulation problems. Insulation systems were developed, and a visualisation of the thermal fields of the insulation systems of the external walls and ceilings of a building was carried out.

Investigation of Soft Matter Nanomechanics by Atomic Force Microscopy and Optical Tweezers: A Comprehensive Review

“…Then, Young’s modulus can be obtained from Equation (1). Tensile testing experiments have been carried out to address the mechanical properties of biodegradable cornstarch- [ 112 ], starch/dolomite- [ 113 ] or lignocellulosic- [ 114 , 115 ] based polymers, hydrogels made by carbon dots, hydroxyapatite and polyvinyl acetate [ 116 ] or chitosan-poly (acrylic acid-co-acrylamide) double network [ 117 ], natural-rubber-modified flame-retardant organic montmorillonite [ 118 ] or chlorhexidine-loaded poly (amido amine) [ 119 ] dendrimers, blends consisting of fibrillar polypropylene and polyethylene terephthalate [ 120 ] or poly ε-caprolactone/poly-(lactide-co-ε-caprolactone (PLCL) [ 121 ], polyurethane [ 122 ] and polyethylene [ 123 ] foams, organosilicone elastomer liquid crystals [ 124 ], and skeletal muscle tissues [ 125 ] or PLCL layered sheets with mesenchymal stem cells [ 126 ].…”

Barbier polymerization towards synthesizing polar polyolefin analogues for polyolefin modification

“…Polyolefins are a series of polymers with wide-ranging applications and abundant production, mainly due to their low costs, ease of processing and molding, and excellent properties. [1][2][3][4] Some of the most important commodity polymers in this category include polypropylene, high-density polyethylene, and linear low-density polyethylene (LLDPE). In fact, these polymers account for over 50% of the total production by weight.…”

Cost-Effective and Scalable Solar Interface Evaporators Derived from Industry Waste for Efficient Solar Steam Generation

“…43 The market demand for high-quality polyethylene foam is continuously increasing, particularly with the development of the construction industry and e-commerce. 44 Regrettably, waste disposal would become a problem because the polymer does not decompose, 45,46 leading to dire consequences such as global climate change and environmental pollution commonly referred to as "white pollution". 44 Traditional incineration of waste plastics increases CO 2 emissions, while landfilling them takes up land resources and may lead to secondary pollution.…”

“…Among them, polyethylene foam (EPE) is a gas-filled cross-linking thermoplastic polymer with an obturator structure and is widely applied as packaging and insulation materials due to its low thermal conductivity, low density, and excellent mechanical properties . The market demand for high-quality polyethylene foam is continuously increasing, particularly with the development of the construction industry and e-commerce . Regrettably, waste disposal would become a problem because the polymer does not decompose, , leading to dire consequences such as global climate change and environmental pollution commonly referred to as “white pollution” .…”

“…44 Regrettably, waste disposal would become a problem because the polymer does not decompose, 45,46 leading to dire consequences such as global climate change and environmental pollution commonly referred to as "white pollution". 44 Traditional incineration of waste plastics increases CO 2 emissions, while landfilling them takes up land resources and may lead to secondary pollution. Mechanical recycling often results in the production of lowquality products.…”