Nylon resin is a durable engineering thermoplastic used in various industrial applications. The specific use of each type of nylon resin varies depending on the crystallization of the polymer molecules. Nylon 6 is desirable due to its ability to be reprocessed many times, making it cost-effective. Nylon 66 is popular for injection molded gear, bearing, and housing construction. Other types of resin can be reinforced with minerals or glass fibers to improve strength and resist deformation from extreme temperatures.
Nylon resin, also known as polyamide resin, is a type of engineering thermoplastic synthesized from ethylenediamine to produce a variety of products for industrial use, such as films, hot-melt adhesives, binders, insulators, fiberglass and filaments . Generally, these resins are grouped as a class of polyamides, known for their stability and adaptability when it comes to mechanical engineering applications. However, the specific use of each type of nylon resin varies depending on the crystallization of the polymer molecules, which determines its properties and the type of end product it will end up in. In the United States, the majority of the resin produced is nylon 66, which is most often used in the production of extruded and molded parts. Some Western European countries, and especially Japan, are at the forefront of world production of nylon 6, mainly used to make fibers and filaments.
While the polymer crystallization of most nylon resins provides exceptional durability, the strength of some can be chemically increased by promoting the formation of new crystal nuclei in a process known as nucleation. However, there is an inherent difference between nylon resin compounds that drives their application and an increasing trend towards reuse of raw materials has created a global shift in product availability, performance and cost effectiveness. For example, nylon 6, which is somewhat resistant to modified crystallization, can be reprocessed many times more than many other types of nylon resins. This feature makes this particular resin more desirable in terms of cost savings by virtue of a longer life and the variety of end products it can be used to produce. In fact, most of the nylon resin sold between manufacturer and manufacturer is actually a blend of virgin and reclaimed raw materials.
Nylon 66 and its subgrades 525 through 528 are particularly popular for their application in injection molded gear, bearing and housing construction as they provide excellent weathering and friction properties. These resins also help improve performance and reduce noise from these parts as they require little or no lubrication. Other types of resin, such as nylon 612 and its sub-grades B925LH and B930LH, are plasticized to resist extreme heat and ultraviolet radiation.
Nylon 6 is a type of resin that can be reinforced with minerals or glass fibers to improve strength and resist deformation from extreme temperatures. Nylon 612 and 12 can also be infused with glass or minerals to varying degrees depending on its application. Additionally, some grades of nylon 12 that resist melt-processing methods are further strengthened with powdered or aqueous solutions of polytetrafluoroethylene.
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