IPX Ultra-high-molecular-weight polyethylene
IPX 2000 Ultra-high-molecular-weight polyethylene (IPX 2000, IPX UHMW, IPX UHMW-PE, IPX-UHMW-PE) is an engineered polyethylene compound developed to maintain many traits of UHMW, while increasing abrasion resistance, UV stability and decreasing friction and thermal expansion. IPX UHMW was developed in the early 2000s by material scientists at Interstate Plastics in Sacramento, CA and was first brought to market in 2005 by Interstate Plastics, under the trademark IPX. The acronym IPX-UHMW-PE stands for Interstate Plastics eXtra ultra-high-molecular-weight polyethylene.
IPX 2000 UHMW is naturally red in color, and not approved for direct food contact like virgin UHMW. IPX maintains a high resistance to corrosive chemicals except oxidizing acids; and offers even lower moisture absorption and a lower coefficient of friction versus UHMW. IPX UHMW is self-lubricating; and is highly resistant to abrasion.
Its coefficient of friction is significantly lower than that of traditional UHMW, and greatly lower than nylon and acetal. While polytetrafluoroethylene (PTFE, Teflon) is normally regarded as having a lower coefficient of friction versus UHMW, IPX UHMW has a comparable coefficient at .09, measuring almost as low as PTFE's coefficient of .07 in a standard ATSM D1894 test.
Uses and Applications
Applications for IPX are the same as UHMW and include Gears, Springs, Plates, Bushings and Housings. IPX UHMW is not approved for food contact. IPX is regarded as being easier to machine versus traditional UHMW.
Conveyor Guide Rails, Belt Scrapers, Chain Guides, Suspension Wear Plates, Rider Plates, Idler Rollers, Guide Shoes, Wear Strips and Shoes.
Sprockets, Wheels, Bearings, Component Parts, Pinion Gears, Flanged Rollers.
- Interstate Plastics (2013). "Material Specs of IPX 2000 UHMW" (PDF).
- Interstate Plastics Material Specifications Manual (2013), pp. 7-8
- D.W.S. Wong, W.M. Camirand, A.E. Pavlath J.M. Krochta, E.A. Baldwin, M.O. Nisperos-Carriedo (Eds.), Development of edible coatings for minimally processed fruits and vegetables. Edible coatings and films to improve food quality, Technomic Publishing Company, Lancaster, PA (1994), pp. 65–88
- Interstate Plastics (2013). "Material Specs of UHMW" (PDF).
- Tam, Garvin (2004). Elert, Glenn (ed.). "Coefficients of friction for teflon". The Physics Factbook. Retrieved 2019-07-28.