Aplicações de cargas minerais em polímeros. / Application of minerals fillers in polymers.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

The mineral fillers have been used in admixtures with a large variety of polymers called composites with the purpose not only of reducing their prices but mainly due to the improvements of their physical and chemical characteristics. The polymer manufacturers have been looking for the development of new types of polymers and composites in a battle driven by the great existing market as well as the consumers needs for products with distinct physical and chemical properties and lower prices. In Brazil the mineral fillers are still mainly used in empirical admixtures with polymers. The understanding of the intrinsic properties of mineral fillers and polymers, the influence of the surface tensions in the mineral/polymer interactions, the development of new equipments for measuring the surface tension, as well as chemical agents to promote the surface compatibility between mineral and polymer, has contributed for a better understanding and foreseeing the properties of composites and nanocomposites. Many researches have been developed under this direction with the goal of comparing the effect of using mineral fillers with and without superficial treatment by by chemical agents in admixed with polymers. The physical and chemical properties of these composites, such as elongation, flexural tensile strength, heating behavior and many others are measured and defined, supporting the properties enhancement when compared with the same properties for the stand alone polymers.

ASSUNTO(S)

industrials minerals physic-chemistry (analitical-process) físico-química (análise-processo) polímeros (materiais) polymer (materials) minerais industriais

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