By Lieng-Huang Lee (auth.), Lieng-Huang Lee (eds.)
Since the 1st symposium on fresh Advances in Adhesion, held September, 1971 in Washington, D. C. , this department of the yank Chemical Society has consistently backed a number of symposia on adhesion and adhesives. The chemists have progressively learned the significance of adhesion in quite a few fields of technology and know-how. in the course of those years, the technological know-how of adhesion has gradually grown in addition to growth in floor technology and fracture mechanics. additionally, new adhesives were invented and utilized in genuine buildings, for instance, structural and aerospace adhesives. in line with socio-economic calls for, new types of adhesives were brought to strive against the issues of toxins and to advertise energy-conservation. The advancements of hot-melt adhesives, waterborne adhesives, and radiation-curable adhesives are bright examples of successes in fixing the various difficulties. As chemists, our hatural wish is to appreciate how these new adhesives and new sorts of adhesives are made. therefore, we're attracted to studying concerning the chemistry of adhesives in order that we may perhaps 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 contemporary advancements in Adhesive Chemistry. It was once held from March 21 via 23, 1983 within the Westin inn, Seattle, Washington. The Symposium used to be rather well attended. in general, for the 1st periods, we needed to flow from the smaller Mt. St.
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Extra resources for Adhesive Chemistry: Developments and Trends
New Developments in Acrylic Adhesives TOUGHNED ADHESIVESPERMANENT BONDING OF SMALL AND LARGE STRUCTURES IN MOST CONFIGURATIONS CAN OFTEN BE USED UNDER HARSH CONDITIONS (Ref: W. Fig. 11. UV CURING .. -H. LEE TEGDMA AND 'HOMOLOGUES' ARE REMARKABLE MOLECULES OR FOR THE 'HOMOLOGUES' Ac-X-R WHERE X IS ANY ESTER-BASED GROUP(S) AND R IS USUALLY, H, OH OR A FURTHER ACRYLIC ESTER. 12. Anaerobic Adhesives (Ref: W. A. Lees, Brit. polym. " These adhesives can be bonded rapidly at room temperature and are somewhat tolerant to an oilcontaminated surface.
The compositions, as claimed in patents (66,67), contain an elastomer that is colloidally dispersed in a monomer or in a monomer/oligomer/polymer solution. On the general subject of the rubber-reinforcement of acrylics, Drake et al. have written a recent review (68). However, they emphasize nitrile rubbers. Several recently developed epoxides deserve mention. Dow has introduced a series of new experimental resins based on triglycidylether of tris(hydroxyphenyl)methane isomers and higher oligomers (73): The cured epoxies have high heat distortion temperatures and improved thermal stability compared to similar epoxy resins.
For film adhesives, ultrasonic welding (112) at a frequency of approximately 15,000 kHz can be used instead of weld-bonding. The subsequent cur ing can also be completed in a regular oven. This technique has been applied to small RECENT DEVELOPMENTS: ADHESIVE AND SEALANT CHEMISTRY 39 access panels for the Air Force A-lO attack aircraft at Fairchild Republic Co. Plans are underway to treat large fuselages method. and fuselage doors by the same weld-bonding In the future, some of these new techniques will be used to cure high-temperature adhesives for building aircraft without rivets or bolts.
Adhesive Chemistry: Developments and Trends by Lieng-Huang Lee (auth.), Lieng-Huang Lee (eds.)