By M R Bowditch, J D Clarke, K J Stannard (auth.), K. W. Allen (eds.)
Each yr, approximately Easter time, we're reminded of the ongoing development within the use of adhesives. the yearly convention right here on the urban collage presents a focus for dialogue, either formal and casual, on growth and improvement. in the event you attend the convention its rewards and value are instant and noticeable, yet its impact extends to a much broader viewers throughout the typical booklet of the papers. right here in quantity eleven of the sequence we provide the newest instalment, the papers provided and mentioned in 1986. could I convey gratitude to all those that, via their carrying on with aid, either in offering papers and in attending the assembly, make the entire occasion such a success and profitable. thanks all, greatly. okay. W. ALLEN Vll Contents Preface . v 1. The power and sturdiness of Adhesive Joints Made Underwater M. R. Bowditch, 1. D. Clarke and ok. 1. Stannard (Admiralty study institution, Holton Heath,Poole, Dorset, united kingdom) 2. a few features of Silane expertise for floor Coatings and Adhesives 17 C. Kerr and P. Walker (SCT fabrics, Atomic guns learn institution, construction SB43, Aldermaston, interpreting, Berkshire RG74PR, united kingdom) three. Ester Polymers and their interplay with Alumina Studied by way of Inelastic Electron Tunnelling Spectroscopy . 38 J. Comyn, C. C. Horley, R. G. Pritchard and R. R. Mallik (Faculty of technological know-how, Leicester Polytechnic, PO field 143, Leicester LEI 9HB, united kingdom) four. Ultrasonic Exploration of Adhesive Bonds through Acoustic Microscopy fifty six D. M. Thaker and N. J.
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Hence plasma polymerization offers a new and complementary doping technique for polymers in addition to the liquidphase method. An obvious advantage of plasma polymerization is that it precludes the need for solvents and polymerization may be performed in inert atmospheres. Polymers with ester side groups find uses in a number of adhesives including PVA adhesives for paper cardboard and wood, and reaction setting modified acrylic adhesives for metal structures. 2. EXPERIMENTAL Polymers for solution doping were prepared by free radical addition polymerization (7).
It should be noted that all the specimens pretreated with silane failed cohesively, the additive specimens showed some component of adhesion failure. Table 15 shows that the epoxide adhesive failed cohesively in all cases. On mild steel (Table 16) all the silanes used as pretreatments produced an increase in bond strength, they were less effective as additives. 30 TABLE 13 Effect of MPS on Bond Strength of Epoxide Adhesive to Aluminium (Butt Tensile) ~ %MPS 1 1 I :2 I 4 I 8 Addi-I p . IAddi-l p .
Approx. 025% w/v 500 v/mV 44 TABLE 2 Peak No. Assignment for blank lET spectra obtained after devices exposed to glow-discharge in air. cm-1 Assignment 282 (m) Ai phonon 2 613 (w) r(COO-) and OH bend 3 919 (m) Al-O bulk phonon 4 1049 (wm) 5 1145 (w) 6 1307 (vw) 6 s (CH 3 ) 1371 (w) 6 a(CH 3 ) 8 1444 (w) V 9 1597 (vw) va(COO-) 10 1855 (vw) Al-O (2x) overtone 11 2879 (m) \) (CH 2 ), 12 3621 (m) v (OH), surface hydroxyls Footnote: r(CH 3 ) (C-O)? s(COO-) (CH 3 ) The following abbreviations and symbols are used in assignment tables.