Products in Mining: Polyamides

VESTAMID® NRG 2901 BK is a high-viscosity, heat-stabilized compound with exceptional mold release properties. It is nucleated to reduce cycle time and shrinkage of molded parts. It is commonly used for gas pipes and fittings, with a proven record of safe and reliable performance in demanding applications, including fuel lines in passenger cars, air brake tubing in trucks, and offshore applications.

Nylacast Impact is a grade specifically developed for applications requiring high impact resistance and/or noise reduction capabilities. The important characteristics of these materials are their improved insensitivity against stresses, sharp edges, notches, scratches etc. Impact is ideally suited to applications such as support rollers for the aggregate processing industry, dollies used in conjunction with piledrivers and crane feet pads as well as roller coaster wheels in relation to noise reduction. However there are many industries and applications where this type of material would be very beneficial over the basic grade of Natural cast nylon.

Nylacast PA 6 Natural is the basic PA 6 grade from which all the other grades of cast nylon stem. Generally accepted as the primary engineering polymer, natural cast nylon is suitable for virtually any plain bearing application, not to mention a huge range of other applications for which this versatile grade finds a use. By varying the conditions of polymerisation the mechanical properties of cast nylon may be altered to suit specific applications and the performance of the basic polymer can be enhanced with the addition of various additives, fillers, lubricants and colorants (see further grades). Compared with injection molding and extrusion grades of polyamide, cast nylons stand out with their improved mechanical, thermal and chemical resistance properties.

Tarnamid® T- 27 CF20 is a 20% carbon fiber reinforced polyamide 6 compound, heat stabilized, good conductive and electrostatic properties.

Nylacast H.S Blue is heat stabilized cast nylon, easily distinguished by its blue color. Additives in the form of high temperature resistant colorants, heat stabilizers and UV stabilizers allow HS Blue to better retain its mechanical properties in applications operating at higher temperatures.

Nylacast Moly is a cast nylon material in which improved crystallization occurs by the addition of Molybdenum Disulphide. On account of this the superficial hardness increases (providing excellent machine ability) and simultaneously the general mechanical and anti-friction properties are improved. Due to the fact that the crystal structure breaks down immediately before the melting temperature is reached, the thermal properties of the material are improved over the basic grade.

Nylacast Aquanyl PA 6/12 is a copolymer of nylon 6 and nylon 12 produced via the anionic polymerization process using the monomer’s of caprolactam and Laurinlactam. Laurinlactam has a similar effect to a plasticizer, but being a copolymer does not suffer the “Leeching out” problems of many plasticisers. The aim is to impart a greater degree of resilience to the material, for which purpose the copolymerisation method is very successful.

Nylacast Nylube was introduced into the Nylacast product rangein 1989 as a logical progression to Oilon with already outstanding performance as a bearing material. Since that time, it has proved to be Nylacast’s supreme wear resisting grade and one of the most important developments from Nylacast in new materials. Nylube contains a combined liquid/solid lubricant system which allows for a coefficient of friction as low as 0.08. This is below that of almost any other polymer available at present.

Nylacast Oilon was a break through of the first magnitude in the world of cast nylons, developed in the early 70s by Nylacast and introduced to the market in 1974. Oilon was the very first authentic lubricated Nylon, havinga blended liquid lubricant system built in during the processstages, which obviously resulted in a substantial increase inbearing life, 5 times that of Natural cast nylon and 25 timesthat of phosphor bronze! The lubricant contained within thematerial will not drain, machine, spin, leech or dry out andnever needs replenishment.

Tarnamid® T- 27 CF40 is a 40% carbon fiber reinforced polyamide 6 compound, heat stabilized, good conductive and electrostatic properties.

Tarnamid® T- 27 CF10 is a 10% carbon fiber reinforced polyamide 6 compound, heat stabilized, good conductive and electrostatic properties.

Tarnamid® T- 27 CF30 is a 30% carbon fiber reinforced polyamide 6 compound, heat stabilized, good conductive and electrostatic properties.

Tarnamid® T- 27 CFHI is a reinforced polyamide 6 compound, heat stabilized and impact modified., good conductive and electrostatic properties.