Titlebook: Integral/Structural Polymer Foams; Technology, Properti Fjodor A. Shutov,G. Henrici-Olivé,S. Olivé Book 1986 Springer-Verlag Berlin Heidelb

Conflagration

delusion

無目標(biāo)

Integral Foam Based on PolyurethanesIntegral PUR foams are manufactured using the same raw materials as those used for non-integral PUR foams, viz., hydroxyl-bearing oligomers, usually oligoethers or oligoesters, and di- or polyisocyanates, with tertiary amines, organometallic compounds and metal salts as catalysts, together with surfactants and foaming agents.

ALT

平項(xiàng)山

initiate

Secondary Processingnd fastening) are similar to those used on unfoamed and non-integral foamed plastics. However, secondary finishing for IF’s is in some ways specific because of the large size, complex shape and imperfect surface of most of the parts ..

minion

確定的事

Frenetic

Injection Molding: Gas Counter Pressure Process the injection of the melt. If the counter pressure is too high, however, the surface quality is diminished. The mold cavity is filled completely by the melt and the density reduction occurs by volume contraction of the raw material ..

nerve-sparing

Comparison and Selection of Integral Foam Processesst always interested in the technical aspects of an IF process, and, of course, in cost comparisons with similar parts made from unfoamed or foamed (but non-integral) plastics. Non-plastic producers and consumers are mainly interested in cost comparisons with wood, metal or concrete solutions to their problems ..