E 465 Polyurethane is a two component, solvent free, high modulus, polyurethane elastomer. It provides excellent elasticity and high tear resistance properties with minimum shrinkage. Cures by reaction (cross linking) of the two components even at very low temperatures. Mixing Ratio (A : B) = 100:100 by weight. Advantages: • Solvent free • Shore hardness A 60-70 • Long pot life • Possibility of mounting in cold temperature (but with minimum moisture) • Minimal contraction • High tensile strength. • High impact resistance. • Chemically resistant
Use
Production of silent blocks
Manufacture of various types of wheels and shafts
Gasket manufacturing
Making various kinds of molds or stamps for concrete
Application: Preparation of Prototype Object Before casting, check that the surface or object to be copied (creation of mold) is free of any trace of moisture (Maximum surface moisture content should not exceed 4%). Moist gypsum and clay prototype objects need to be placed in an oven, to remove all humidity. If the object to be copied is porous (clay, gypsum, concrete, wood, etc.), it needs to be pretreated by sealing all pores with the Polistep E 495 resin/varnish (find it in Polistep assortment).
Mixing: Stir Polistep E 465 Component A well before using. Stir Polistep E 465 Component B well before using. Polistep polyurethane E 465 Component A and Component B should be mixed by low-speed mechanical stirrer, according to the indicated mixing ratio in this technical data sheet, for about 3 min. The mixing of the components has to be affected very thoroughly, especially on the walls and bottom of the pail, until the mixture becomes fully homogeneous. Apply polyurethane E 465 resin with a brush on the surface/object to be copied, to avoid entrapped air pockets. After 15-30 min create the mold by filling up with Polistep polyurethane E465 resin. RECOMMENDATION: Use a suitable sized vacuum apparatus (-1 bar), to remove entrapped air bubbles from the polyurethane E 465 A+B mixture, directly after mixing and before casting. Use of the Mold: When the mold, created out of the Polistep polyurethane E 465 resin, is to be used for gypsum/concrete objects production, please ensure that the mold is fully coated on the inside with the polyurethane E 498 liquid-applied mold release agent, in order for the parts to be removed easily. When the mold is to be used for resin objects production, please ensure that the mold is fully coated on the inside with the liquid-applied mold release agent, in order for the parts to be removed easily.