Banca de DEFESA: MATHEUS DIONYSIO SLONGO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : MATHEUS DIONYSIO SLONGO
DATA : 05/10/2022
HORA: 14:00
LOCAL: IFRS CAMPUS FARROUPILHA SALA 320
TÍTULO:

EVALUATION OF POLYMERIC BLENDS WITH MATRIX OF
POLYOXYMITYLENE FOR FURTHER ELASTOMER OVERINJECTION
THERMOPLASTIC

PALAVRAS-CHAVES:

: polyoxymethylene; thermoplastic elastomer, polymer blends, overmolding, adhesion

PÁGINAS: 68
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
ESPECIALIDADE: Polímeros, Aplicações
RESUMO:

Polyoxymethylene has good tensile strength, low friction coefficient, excellent dimensional stability. Polyoxymethylene has good tensile strength, low coefficient of friction and excellent dimensional stability. Thermoplastic elastomers have a rubbery, tacky surface and can be overmolding into a rigid substrate to increase friction and slip resistance. To obtain adhesion between the two materials, it is necessary that they are compatible and that the formation of polymeric blends is possible. The objective of this work is to evaluate the influence of the mechanical and thermal properties of polymeric blends with a polyoxymethylene matrix, after the addition of different percentages by weight of thermoplastic elastomer and the incorporation of a compatibilizing additive for subsequent overmolding of thermoplastic rubber and evaluation of adhesion between the materials. After the formation of the blends, it can be evidenced by the analysis of infrared spectroscopy by Fourier transform that there were interactions and miscibility between the materials, mainly in the samples that contained compatibilizing agent. The blends showed changes in morphology after scanning electron microscopy analysis of fractured samples in the impact strength test. The degree of crystallinity of the blends reduced with the incorporation of thermoplastic elastomer or the presence of the compatibilizing agent. The mechanical properties showed a reduction in tensile strength and elastic modulus with increasing percentage by weight of thermoplastic elastomer added to the mixture. The blends selected to receive the thermoplastic elastomer overmolding showed better adhesion in the mixtures that contained the compatibilizing agent, due to their chemical interactions and better interphase with the overmolding thermoplastic elastomer

MEMBROS DA BANCA:
Presidente - 1332290 - EDSON LUIZ FRANCISQUETTI
Interno - 3162537 - MARA ZENI ANDRADE
Interno - 1997577 - ALEXANDRE LUIS GASPARIN
Externo à Instituição - LAURA DE ANDRADE SOUZA - IFRS
Externo à Instituição - ANA PAULA BILCK - IFRS