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Use of calcium carbonate – fumed silica mixtures as filler in polyurethane adhesives
Author(s) -
SepulcreGuilabert José,
del Pilar FerrandizGómez Teresa,
MartínMartínez José Miguel
Publication year - 2001
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200105)169:1<185::aid-masy185>3.0.co;2-e
Subject(s) - fumed silica , adhesive , calcium carbonate , polyurethane , materials science , filler (materials) , composite material , rheology , adhesion , precipitated silica , chemical engineering , layer (electronics) , natural rubber , engineering
Natural ultramicronized calcium carbonate and mixtures of fumed silica‐natural ultramicronized calcium carbonate are proposed as fillers of solvent based polyurethane (PU) adhesives. PU adhesive containing only calcium carbonate shows similar rheological, thermal, mechanical, surface and adhesion properties than the PU adhesive without filler. Addition of 90 wt% fumed silica +10 wt% calcium carbonate mixture to PU adhesive produced a similar performance than the PU adhesive containing only famed silica. The increase in the amount of natural calcium carbonate in respect to fumed silica in the filler mixture produced detrimental effect on the rheological and mechanical properties of the PU adhesives (in respect to those provided by the PU adhesive only containing fumed silica), although the surface and adhesion properties were not noticeably modified.