Reciclagem de resíduo de espuma rígida de poliuretano através da incorporação de polímeros termoplásticos, ABS, PSAI e OS

AUTOR(ES)

Luciano Luckmann

DATA DE PUBLICAÇÃO

2005

RESUMO

Nowadays, the refrigeration industry uses the rigid polyurethane foam (PUR) as a thermal insulation and structural component in doors and cabinets of refrigerators and freezers. The waste of PUR generated in the manufacturing represents great volumes, which are considered an environmental problem. Some attempts of recycling this material have already been explored, such as the use in the manufacturing of bricks, roofing tiles, vases; lining confection with isolating properties; in the civil construction, etc... This work presents an alternative for the recycling of rigid polyurethane foam. A study of the incorporation of rigid polyurethane foam residues in thermoplastic matrices of Polystyrene (PS), High Impact Polystyrene (HIPS) and Acrylonitrile-butadiene-styrene copolymer (ABS) was done. The PUR waste was prepared through the milling of the material. The incorporation of PUR in PS, HIPS and ABS was realized through the extrusion of the materials in different mass concentrations. The laboratorial tests were carried through in agreement with standard norms ASTM D1238 (Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion) and D638 (Standard Test Method for Tensile Properties of Plastics). The increasing of PUR concentration over the mix with the three termoplastic matrices decreases the Melt Flow Rates of the mixtures. It was showed the possibility to know a thermoplastic polymer viscosity through Melt Flow Tests. Also mechanical properties determination and comparison through tensile test analysis have been carried through: maximum tension and tension of rupture, deformation at the elastic limit and at the rupture and determination of Youngs modulus in function of the mass concentration of PUR in the thermoplastic matrixes.

ASSUNTO(S)

poliuretano polymers, recycling, polyurethane, polystyrene reciclagem poliestireno polímeros polimeros

Documentos Relacionados

• Alternativa de reciclagem de resíduos de espuma rígida de poliuretano com ABS
• Estudo comparativo do coeficiente de condutividade térmica de espuma rígida de poliuretano obtida por reciclagem mecânica e química
• Caracterização dinâmica de vigas "sandwich" com núcleo de espuma rígida de poliuretano
• Tratamento químico superficial e metalização de ABS, PVC e blendas de PVC/ABS
• Estudo da relação entre os parâmetro do processo de injeção em alta pressão de espuma rígida de poliuretano na indústria de refrigeração