Nanocellular thermoplastic foam and process for making the same
A thermoplastic polymer and foam technology, applied in the field of manufacturing the foam, can solve the problems that large foam samples have no practical significance and extreme engineering requirements, and achieve the effect of small cell size and high nucleation density
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[0084] The following examples use polymers selected from Table 1 or Table 2 as thermoplastic polymers. Table 1 lists three different polymethylmethacrylate-co-ethylmethacrylate (PMMA-co-EMA) copolymers obtained from Scientific Polymer Products. Table 2 lists the SAN copolymer (TYRIL TM 125, TYRIL is a trademark of The Dow Chemical Company).
[0085] Table 1
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[0087] Table 2
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[0089] The compositions of Comparative Examples (Comp Ex) and Examples (Ex), and the characteristics of the resulting thermoplastic polymer foams are provided below. Each Comparative Example and Example followed similar mixing and foaming procedures.
[0090] POSS masterbatch
[0091] A masterbatch of polyhedral silsesquioxane (POSS) suitable for use in the following selected examples was prepared as follows. POSS (Catalogue # MA0735) was obtained from Hybrid Plastics Inc. One gram of POSS was dissolved in four grams of ethanol, and the resulting solution was added to 49 gr...
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