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¹úÍâÎÄÏ×£º

  1. hanser, g., polyurethanes: chemistry, processing and applications, hanser publishers, munich, 2000.
  2. saunders, j.h., frisch, k.c., chemistry of polyurethanes, marcel dekker inc., new york, 1962.
  3. friedrichs, b., catalysts for polyurethane foams, journal of cellular plastics, vol. 45, issue 2, 2009.
  4. astm d2859-09, standard test method for foam stability of rigid polyurethane foams.

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