condescend
发表于 2025-3-25 05:47:00
Integral Foam Based on Poly(vinyl chloride)e properties which underlie the remarkably rapid growth in the output of these materials, once the technological problems related to the narrow temperature range of processing of this polymer were overcome.
唠叨
发表于 2025-3-25 08:19:40
pidly growing fields, the terminology seems to have grown even faster. Thus there are two names for the material structure itself. In the United States and in Japan the term for these plastics is Structural Foams, whereas in Europe and the USSR the term used is usually Integral Foams. We have adhere
DEAWL
发表于 2025-3-25 13:43:15
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Cholesterol
发表于 2025-3-25 18:20:42
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CRAB
发表于 2025-3-25 21:41:28
Extrusionrusion methods are particularly economic for fabricating finished articles that do not require any secondary processing (furniture parts, complicated cross sections, etc.), and where new sorts of articles are to be produced, like, for example, “integrated” pipes (see Chapters 15 and 17).
arousal
发表于 2025-3-26 01:00:02
Reaction Injection Molding Process material in addition to the time needed for the reaction. Recently, technology has been developed for rapid . polymerization to form articles directly from monomeric or oligomeric liquids. This process has come to be known as ., and its modification as the .. process.
深陷
发表于 2025-3-26 07:02:43
Starting Materialsrtained to integral polystyrene foam ., and were later used as a basis in Europe and the USA for the production of the first commercial grades. Integral polystyrene foam was followed by integral polyolefin and poly(vinyl chloride) foams.
罐里有戒指
发表于 2025-3-26 10:09:05
Injection Molding: Gas Counter Pressure Processhe integral structure and an improved surface quality are achieved by pressurizing the mold to a pressure higher than that of the foaming gas prior to 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 t
结构
发表于 2025-3-26 16:16:18
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类似思想
发表于 2025-3-26 19:29:59
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