Epoxy polymer adhesive properties in the presence of fine powder silicas with modified surfaces

✍ Scribed by S. A. Tishin; V. A. Tishin; E. S. Bakaev; B. A. Shipilevskiy; V. N. Kestelman

• Publisher: Springer
• Year: 1993
• Tongue: English
• Weight: 329 KB
• Volume: 28
• Category: Article
• ISSN: 0022-2461
• DOI: 10.1007/bf00357802

✦ Synopsis

The introduction of fine powder silicas with modified surfaces into epoxy polymers was investigated. An increase in adhesive and cohesive properties was obtained. The greatest efficiency (up to 110% relative growth of adhesive strength) can be achieved by the introduction of butosil, a filler with a hydrophobic surface, and by the introduction of titanoaerosils obtained by the combined high-temperature hydrolysis of titanium and silicon chloride vapours. The mechanisms of these observed effects are discussed. The most probable causes are the decreasing inner concentration and increasing cohesive interaction as a result of macromolecular chain packing stimulated by the filler surface.