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HomeNorplex Micarta Product Info

Norplex Micarta Product Info

OVERVIEW
Norplex-Micarta is the leading manufacturer of high performance thermoset composite laminates. We work directly with customers to manufacture the highest quality specialty sheet products, pre-pregs, rods and molded shapes, and tubes available for our OEMs and fabricators around the world.

This cost-effective line of products consists of multiple plies of various papers impregnated with phenolic resins and laminated under heat and pressure to produce a thermoset composite. Both papers and resins can be modified to change the finished properties of the final laminate. These products offer thermal, mechanical isolation, and thermal and electrical insulation properties that meet or exceed those of most thermoplastic materials. The properties and cost-effectiveness of these products often make them the insulators of choice in low-voltage, dry-service electrical equipment.

These products consist of phenolic resin systems combined with several weights of cotton fabrics, from less than four ounces per square yard (commonly called "linen") to 6, 8, 10, and 25 ounces per square yard, used in bearing grades for ships. These products are easy to machine and operate with less noise than metal in numerous gear and bearing-type applications. In addition, they do not spark when struck, so they can be used in explosion-proof environments. These structural and electrical insulation materials are also less abrasive than fiberglass options in wear applications. Phenolic/canvas composites can be used to make a variety of parts, including gears, pulleys, rollers, and guides. In the phenolic/linen product line, grades include bleached linen to enhance moisture resistance, electrical insulation, and other properties. The resin systems can be modified in various ways to suit requirements, including the addition of lubricants that reduce wear. Phenolic/linen products offer a lower coefficient of thermal expansion than thermoplastic materials, as well as more strength and heat resistance than all but the most expensive thermoplastics.
Applications include small gears, pulleys, rollers, guides, and other parts that are more intricate than those made with canvas grades. Bearing grade laminates consist of multiple plies of a very heavy weight canvas cloth impregnated with phenolic resin and laminated under heat and pressure to produce a thermoset (non-melting) material. Canvas weights and resin formulations can be changed to modify the finished properties of the composite laminate. The load-bearing properties of these laminates are better than those of high-performance thermoplastics and roughly match those of brass and bronze. But unlike these metal options, these high performance thermoset composites will not seize to metal shafts or score them, speeding up bearing replacement and reducing equipment downtime and cost of replacement. With some of the highest load capacities of any bearing material, the composites are specifically designed for heavy load-bearing applications in ships, metal-rolling mills, and off-road construction equipment.

Consisting of electrical-grade epoxy resin systems combined with a variety of glass fabric substrates, these products come in low- and high-temperature versions. Low-temperature epoxy/glass materials offer good chemical resistance and electrical properties under dry and humid conditions. Some systems are flame retardant and meet the Underwriters Laboratories Flammability Class, V-0. They also feature high flexural, impact, and bond strength at temperatures up to 130°C. These materials are suitable for a variety of structural, electronic, and electrical applications.

High-temperature epoxy/glass products offer superior mechanical strength and insulative properties over a wider temperature range. These products feature high mechanical strength at continuous operating temperatures up to 180°C in mechanical applications. In response to customer requests, Norplex-Micarta can change the resins to enable products to withstand even higher continuous operating temperatures. Several standard grades can handle temperatures much higher than 180°C for short periods of time. At elevated temperatures, the products retain 50 percent of their flexural strength. Several types meet NEMA G-11 requirements, and the materials can also be produced on any glass style for applications that do not require NEMA G-11. Applications include solder pallets, corona dissipation, rotor slot insulation, and structural applications at elevated temperatures.

   (NORPLEX PRODUCTS) Norplex Micarta Product Info


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