Enhancing the Fatigue Property of Nylon 6 by Using Glass-Fiber Reinforcement and Injection Molding

Abstract

In this study, Nylon 6 (PA6) was reinforced with glass fibers and molded using different injection parameters. The PA6 samples were then subjected to fatigue tests, and the results were processed to study (i) how the glass fibers affected the PA6 fatigue displacement and (ii) which injection parameters influenced the PA6 fatigue property. To do so, single-factor experimental designs were implemented in which the control factors were the glass-fiber percentage, the melt temperature, the hold pressure, the hold time, the injection pressure, and the injection time. Correlational analyses were used to predict the relationships between the control factors and fatigue results. A two-factor design was then applied to determine the two factors that influenced the PA6 fatigue displacement the most, with analysis of variance being used to determine how the factors affected the fatigue property. In this study of injection plastic, the glass-fiber percentage of PA6 composite was found to be the main factor that affected the fatigue displacement the most.

Investigation on Modulus of Elasticity of Badminton String by Response Surface Methodology

“…At present, the most common badminton string in the market is made of nylon (polyamide, PA) with multilayer weaving technology, and its structure can be divided into core, outer, and coating from inside to outside [7]. Nylon (polyamide, PA) is a kind of plastic made of polyamide resin, and its properties are sensitive to the external environment, such as humidity, temperature and so on [8,9].…”

Tribological Performance of Nylon Composites with Nanoadditives for Self-Lubrication Purposes

“…Nylons stand out thanks to their ability to form a proper transfer film when sliding against metallic counterparts [ 20 , 21 ]. PA66 is one of the most commonly used nylons for mechanical purposes [ 22 , 23 ], as well as other relatively new engineering nylons, such as PA12 and PA46 [ 24 ]. In the case of PA46, it is expected to show superior performances to other nylons used in engineering parts and components, such as gears, because of its higher modulus and strength as a result of being highly crystalline.…”

“…Nevertheless, the engineering performance of nylons can be improved by means of developing new composites, combining the optimum processability of polymers and the excellent wear and mechanical properties of some solid lubricant nanoadditives. Nanostructures derived from carbon allotropes such as graphite and graphene have been widely proven to provide good properties for mechanical and tribological purposes in several polymeric matrices, such as PA [ 22 , 23 , 24 , 25 , 26 , 27 ], PTFE [ 28 ], PEEK [ 29 ] or PES [ 30 ].…”