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The effect of sand surface treatment on sand‐filled composites
Author(s) -
Rodriguez E. L.,
Newaz G. M.
Publication year - 1988
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.750090112
Subject(s) - materials science , composite material , silane , thermogravimetric analysis , ultimate tensile strength , composite number , modulus , shear modulus , glass transition , styrene , dynamic mechanical analysis , acoustic emission , copolymer , polymer , chemistry , organic chemistry
Sand/unsaturated polyester composites, 50/50 composition by weight, were prepared from sand treated with different silane solutions. N‐2‐aminoethyl‐3‐aminopropyl‐trimethoxy silane (A0700) and 3‐aminopropyltriethoxy silane (A0750) were used. Water and styrene solutions were employed to treat the sand. It was found that A0750 in styrene produced better composites than other surface treatments. As the interfacial bond was improved, the tensile strength and the tensile modulus increased whereas the strain to failure decreased. The acoustic emission data was a function of the sand surface treatment where a better interfacial bond resulted in more acoustic activity. Dynamic mechanical analysis showed that the interfacial bond affects the dynamic shear modulus, the loss shear modulus, and the damping of the sand‐filled composites. The glass transition temperature ( T g ) of the composite was also affected by the surface treatment. The thermogravimetric analysis did not show a well‐defined trend between the decomposition temperature and the surface treatment.