Influência da fibra de vidro nas propriedades mecânicas de um polímero com adição de grafeno

Abstract

The material optimization representes competitiveness, productivity and evolution in engineering and industry. In this context, the present study has the objective to characterize a polyamide 6.6 with the addition of fiberglass and graphene comparing the mechanical performance of materials, using as a basis, material concepts and mechanical tests. Four raw materials were purchased from suppliers X and Y, polyamide 6.6 with the addition of 30% fiberglass, polyamide 6.6 with the addition of 30% fiberglass and 1% of graphene, polyamide 6.6 with the addition of 25% of fiberglass and polyamide 6.6 with the addition of 25% fiberglass and 3% graphene and used to manufacture the specimens trough the injection process. Thus, they were subdivided into twenty groups to perform traction and flexion test according to ASTM D638 and ASTM D790 standards. With the results of mechanical performance obtained, the interpretation of the data was performed and the properties between the groups of materials were compared, making it possible to verify that the composite with polyamide 6.6 base and 30% of fiberglass additive was the material that showed better tensile and flexural strength, but when 1% graphene is added there is loss of properties, however the one with a polyamide 6.6 matriz with 25% fiberglass and 3% graphene as additives resulted in an increase of the modulus of elasticity in relation to the material with only 25% additive fiberglass. The work was satisfactory and will serve as a basis for new studies and projects involving composite materials with fiberglass and graphene. [resumo fornecido pelo autor]