Enhancement of the modulus of lightweight shoe sole polyurethanenanocomposites by nano-silica

Polyurethanes (PUs) are unique polymer materials with a wide range of physical andchemical properties. With a well-designed combination of monomeric materials, PUs can betailored to meet the diversified demands of various applications, such as coatings, adhesives, fibers,thermoplastic elastomers, and foams. A wide range of PU foams from flexible to rigid (or tough tostiff) elastomers allows them to be used in diverse applications. PU foams have many applications,including thermal insulation, cushioning, buoyancy, energy absorption (packaging), etc. However,PUs also have disadvantages, such as low thermal stability and mechanical strength. Nano silica isamong the most interesting nanoparticles many researchers have researched. The functionalizedsilanes as coupling agents can achieve stronger interaction between the organic and inorganiccomponents.In this article, the effect of adding nano silica particles was investigated and compared on the twoparameters of modulus and density of polyurethane, and according to the collected results, ۵phr wasfound the proper point for these two properties.

کلیدواژه ها:

Nanocomposites ، Polyurethane ، Nano silica ، Density ، Modulus