Rapid Prototyping involved creating a working model of various parts of the system at a very early stage, after a relatively short investigation. The method used in building it is usually quite informal, the most important factor being the speed with which the model is provided.
There are water-and solvent-based -- also called oil-based -- polyurethane varnishes. Water-based polyurethanes are more environmentally friendly and safer to use than solvent-based, but they are not as resistant to wear and tear as solvent-based products.
N-Methylpyrrolidone (NMP) is a water-miscible organic solvent. NMP is widely used in the petrochemical industry, and in the manufacturing of various compounds, including pigments, cosmetics, insecticides, herbicides, and fungicides.NMP increasingly is used as a substitute for chlorinated hydrocarbons. Copyright (c) 2015 NMP Producers Group.All rights reserved.MP is widely used in the petrochemical industry, and in the manufacturing of various compounds, including pigments, cosmetics, insecticides, herbicides, and fungicides. NMP increasingly is used as a substitute for chlorinated hydrocarbons. Copyright (c) 2015 NMP Producers Group. All rights reserved.