2024/09/18
Polyurea coatings
Polyurea coatings cure quickly, offering waterproofing, flexibility, and durability. They adhere to various surfaces and resist chemicals, temperatures, and abrasion. Used in automotive, pipelines, defense, healthcare, and construction, they protect against damage and deterioration.
ادامه مطلب 
2024/09/18
One-component polyurethane foam (OCF)
One-component polyurethane foam (OCF) is a pre-mixed, self-expanding foam used for insulation and sealing in construction. It comes in cans, expands upon application, and cures within hours. OCF is adhesive, weather-resistant, and requires safety precautions due to its flammability.
ادامه مطلب 
2024/09/18
Methods of recycling polyurethane
Recycling polyurethane (PU) involves thermal methods (incineration and pyrolysis), chemical methods (hydrolysis, alcoholysis, glycolysis), and mechanical methods (crushing and repurposing). Thermal methods can release toxins, chemical methods can be complex, and mechanical recycling is cost-effective but yields lower-quality materials.
ادامه مطلب 
2024/09/18
Hydroponic polyurethane foam as a cultivation media
Hydroponic polyurethane foam offers a sustainable soil alternative for efficient plant growth and resource use. With high water absorption and reusability, it supports long-term cultivation despite challenges with non-renewable materials. Future research aims to enhance its environmental benefits and food security contributions.
ادامه مطلب 
2024/09/18
Polyurethane floral foam
Rigid polyurethane foams (RPUFs) are used in floral design for their high water absorption and open-cell structure. Floral foams, available as wet and dry types, facilitate flower arrangement and vary in density. The synthesis process enhances water retention and balances hydrophilicity, though some foams may have limited strength for certain applications.
ادامه مطلب 
2024/09/18
Cosmetic sponge made of polyurethane foam
Polyurethane foam cosmetic sponges, or egg sponges, are ideal for makeup application due to their softness, bounce, and latex-free composition. They are available in polyether and polyester types, with polyether-based sponges offering better flexibility and durability. Proper cleaning is essential to avoid bacterial growth.
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