By Lieng-Huang Lee (auth.), Lieng-Huang Lee (eds.)
Since the 1st symposium on contemporary Advances in Adhesion, held September, 1971 in Washington, D. C. , this department of the yank Chemical Society has continually subsidized numerous symposia on adhesion and adhesives. The chemists have progressively learned the significance of adhesion in quite a few fields of technological know-how and expertise. in the course of those years, the technological know-how of adhesion has progressively grown besides growth in floor technology and fracture mechanics. additionally, new adhesives were invented and utilized in genuine constructions, for instance, structural and aerospace adhesives. in keeping with socio-economic calls for, new sorts of adhesives were brought to wrestle the issues of pollutants and to advertise energy-conservation. The advancements of hot-melt adhesives, waterborne adhesives, and radiation-curable adhesives are vibrant examples of successes in fixing the various difficulties. As chemists, our hatural hope is to appreciate how these new adhesives and new sorts of adhesives are made. therefore, we're drawn to studying in regards to the chemistry of adhesives in order that we may possibly create new generations of fabrics to meet destiny wishes. It used to be in line with this universal curiosity that w~ set forth to org'anize this Symposium on fresh advancements in Adhesive Chemistry. It was once held from March 21 via 23, 1983 within the Westin resort, Seattle, Washington. The Symposium was once rather well attended. in fact, for the 1st classes, we needed to stream from the smaller Mt. St.
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Extra resources for Adhesive Chemistry: Developments and Trends
E. Arnold, Polym. Chern. , (2) 246 (1975». -H. LEE 20 Table 2. High Temperature Adhesive Tape Properties ----Adhesive FM-34 Filler Tack Drape Flow Shelflife Volatiles, % Yes Yes Yes Good Poor . . 14 NR-056X Yes No No Good Poor . . 11 LARC-13 Yes No No Good Good <1 PPQ No No No Fair Good <1 (Ref: P. M. Hergenrother, "High-temperature Adhesives," lecture notes for the course on "Fundamentals of Adhesion," State University at New Paltz, New York, Nov. ) VI. ANAEROBIC AND STRUCTURAL ADHESIVES Acrylic polymers are one of the important structural adhesives (Fig.
New lines of acrylic HMPSA's have been reported (83), but further development is needed to warrant acrylic HMPSA as a competitive adhesive. One of the new developments in hot-melts is the application of foam technology. Several years ago, the Nordson Laboratory (84,85) discovered that the foamed hotmelts are easier to spread than the non-foamed hot-melts. Later, foamability (86) studies were carried out for the following hot-melt adhesives: polyethylene, polypropylene, polyamide, ethylene-v inyl aceta te copolymer, and polyester.
O II 0 0 II ~c~~_~c, 'c~ ~c» II o II 0 No other catalyst is needed. Solubilization of BTDA in the epoxide may be aided by slightly warming the mixture or by the addition of a mono anhydride, such as maleic anhydride (MA). The cured resin has high-temperature properties. -H. LEE Among new epoxides are two families containing fluorine and phosphorous, respectively. The fluoro-epoxides prepared by Griffith (76,77) at the Naval Research Laboratory have the following general structure: These epoxies are extremely low in water absorption and show good res istance to biolog ical fouling.