Interferência do poliol copolímero de diferentes fornecedores nas características da espuma de poliuretano

Abstract

Copolymers are composed of two or more different monomeric units, which are linked together in a polymer chain. These monomeric units can be different in terms of their chemical structure, size, or physical and chemical properties. There are two main types of copolymers: random copolymers and block copolymers. The random copolymers are composed of monomeric units that are randomly alternated in the polymer chain. While block copolymers are composed of distinct blocks of monomeric units that alternate in the chain. It is known that this compound has unique physical and chemical properties that are different from homopolymers, which are polymers composed of a single monomeric unit that depend on the composition of the monomeric units and the sequence in which they are linked in the polymer chain. After these objections, the objective of the research emerged, which will be to analyze the impact on the foam block when using copolymer from different suppliers. The methodology used will be qualitative, comparative and descriptive, where laboratory tests will be carried out, which took place in a bulge industry in the municipality of Maracanaú, Ceará, Brazil. The period of this research was in the third quarter of 2023. The following procedures were adopted to carry out the tests: three foam blocks will be made, each block will have the same quantity of all materials. But what sets them apart will be the suppliers of copolymer polyol. During the tests, the viscosity of the three copolymers and the density, hardness and resilience of the three foam blocks tested will be analyzed. At the end of the tests, there was a framework to relate viscosity to changes in foam characteristics due to the use of copolymers from different suppliers. In relation to cost-benefit, the feasibility of each supply is analyzed considering the characteristics of the foam provided in each test.