Buscar
Itens para a visualização no momento 21-30 of 58
Modificação da superfície do polidimetilsiloxano (PDMS) para aplicação biomédica
(2021-05-10)
This work proposes a comparative study between different gases seeking to modify the surface by plasma etching of a polymeric biomaterial (polydimethylsiloxane) widely used as a dressing base. This biomaterial has excellent ...
Influência do pré-tratamento mecânico de jateamento na aderência e na resistência anticorrosiva de um processo de pintura e-coat e top-coat
(2020-12-10)
Carbon steel is considered one of the most applied materials in engineering and in the industry, but it has some restrictions, especially when some properties are needed, such as resistance to corrosion, wear and weather. ...
Avaliação do uso de aditivos antichama halogenados e não halogenados na flamabilidade e nas propriedades mecânicas de compósitos de poliéster/fibra de vidro
(2021-05-08)
Over the years, the automobile industry has found itself in the obligation to manufacture automobiles made from polymeric parts, in order to reduce their weight. However, the parts made of composites that have fiber-reinforced ...
Obtenção e caracterização de compósitos de polipropileno e fibras de abacaxi utilizando agentes de acoplamento de fontes renováveis
(2020-07-13)
The preservation and recovery of the environment are issues that have been addressed for a long time, causing new materials and sustainable methods to be investigated. In this way, raw materials from natural and renewable ...
Avaliação do processo e determinação do teor de metais presentes em recheios compostos sabor chocolate obtidos por meio de moagem mecânica
(2020-12-07)
The consumption of chocolates and cocoa products is growing annually. At the same time, several studies have demonstrated possible contamination of heavy metals in these products, from raw materials or stages of the process, ...
Avaliação das propriedades mecânicas, térmicas e físicas de compósitos de polietileno de alta densidade reciclado reforçado com fibras das coroa do abacaxi
(2021-05-08)
The increased use of polymeric materials in various sectors of industry has resulted in several environmental problems, since, with this growth too, there was the generation of a large amount of polymeric waste. An alternative ...
Obtenção e caracterização de óxido de grafeno decorado com nanopartículas de cobre
(2020-07-03)
Graphene has been gaining prominence in recent research due to its unique properties. Its high cost of obtaining brought with it the alternative of studying derivatives of this material, such as graphene oxide (GO), being ...
Avaliação da adição de nanopartículas de alumínio no desempenho de propelente sólido utilizado em minifoguetes
(2020-12-09)
The solid propellant is commonly used as a propelling charge in rockets and has the function of inducing movement to the body, causing it to be propelled upwards. It has in its formulation a mixture between potassium nitrate ...
Desempenho à corrosão de corpos de prova de aço carbono revestidos com cromo trivalente e com posterior aplicação de um filme de passivação de cromo trivalente eletrolítico
(2021-06-29)
Currently, metallic electrodeposition is one of the most used ways to obtain protective barriers against corrosion media. For a long time, processes based on hexavalent chromium were used as a protective coating, but because ...
Avaliação das regiões de borda superficial após processos de cortes térmicos em um aço carbono com e sem pré-tratamento nanocerâmico e revestimento e-coat acrílico
(2021-06-29)
Thermal cuts are widely used in industries in order to obtain manufactured metal parts with good surface finish and preservation of their metallurgical properties, for use in subsequent production processes. Thus, many ...