Comportamento das Forças de Aderência do Adesivo Selante de Silicone e do Mastic Butílico
Behavior of Adherence Forces of the Butyl Mastic and Silicone Sealant Adhesives
Costa, Wanderley da; Silva, Leonardo G. A.; Wiebeck, Hélio
http://dx.doi.org/10.1590/S0104-14282011005000013
Polímeros: Ciência e Tecnologia, vol.21, n1, p.23-26, 2011
Resumo
A pesquisa demonstra como é o comportamento de dois materiais conhecidos comercialmente como mastic em relação às forças de cisalhamento de selantes. No mercado existem dois tipos de mastic, um da família de silicones e outro da borracha butílica. A pesquisa teve o objetivo de esclarecer junto à receita federal e ao mercado, que as propriedades dos dois tipos são muito diferentes, apesar de ambos sofrerem um processo de cura. Com o tempo há aumento das forças de coesão e adesão de ambos, o que evidencia o processo de cura.
Palavras-chave
Adesivo, selante, silicone, mastic butílico
Abstract
This study reveals the response to shear forces for two materials known as mastic. There are two kinds of mastic in the market, one of the silicone family and another made with butyl rubber. The aim was to demonstrate to the Inland Revenue and to the market that these materials exhibit very distinct properties, although both undergo the curing process. As time goes by, there is an increase in the forces of cohesion and adhesion for both types of mastic, which is evidence of the curing process.
Keywords
Adhesives, sealant, silicone, butyl mastic
References
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2. Bodnar, M. J. - “Structural adhesives bonding”, Interscience, New York (1966).
3. Leite, C. A. P.; Castro S.; Soares R. F. & Galembeck, F. - Polímeros, 5, p.23 (1995).
4. Garcia, F. G.; Sampaio, E. M.; Neves, A. F. & Oliveira, M. G. - Polímeros, 18, p.30 (2008).
5. Jackson, B. S. - “Industrial adhesives and sealants”, Hutchinson, London (1976).
6. Flick, E. W. - “Adhesive and sealant compound and their formulations”, Noyes, New Jersey (1978).
7. Houwink, R. & Salomon, G. - “Adhesion and adhesives”, Elsevier, Amsterdan, (1965).
8. Skeist, I. - “Handbook of adhesives”, 2. ed.; Van Nostrand Reinhold, New York (1977).
9. Costa, M. L.; Rezende, M. C. & Pardine, L. C. – Polímeros, 9, p.37 (1999).
10. American Society for Testing and Materials – “ASTM D1002: apparent shear strength of single-lap-joint adhesively bonded metal specimens by tension loading (Metal-to-Metal)”, Philadelphia (2001).
11. Skeist, I. - “Handbook of adhesives”, 3. ed., Ed.; Van Nostrand Reinhold, New York, (1990).
12. Buonocore, M. G. - J. Am. Dental Association, 67, p.382 (1963).
13. Lee, H. & Orolowski, J. A. - “Adhesive dental composite restoratives”, Lee Pharmaceuticals, South El Monte, (1973).
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