Defects related mainly to poor adhesion



Brittleness in a film can arise in a number of ways. The following are probably the most common:
  1. (i)

    by the use of a medium of too short oil length (the effects are apparent very early);

  2. (ii)

    by oxidation and weathering of externally exposed films;

  3. (iii)

    by the use of reactive pigments such as zinc oxide — formation of zinc soaps is accompanied by embrittlement of the film;

  4. (iv)

    the use of insufficient or unsuitable plasticizer in non-convertible films such as cellulose nitrate or chlorinated rubber.



Poor Adhesion Paint Film Urea Formaldehyde reSin Galvanize Iron Priming Coat 
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  1. [1]
    König, W. (1962), Fatipec Congress Book,p. 424.Google Scholar
  2. [2]
    Saarnak, A., Nilsson, E. and Kornum, L.O. (1976), JOCCA, 59, 427.Google Scholar
  3. [3]
    Walker, P. (1967), Paint Tech., 31, No. 8, 22; No. 9, 15.Google Scholar
  4. [4]
    Walker, P. (1974), JOCCA, 57, 241.Google Scholar
  5. [5]
    Schurr, G.G. and van Loo, M. (1967), J. Paint Tech., 39, 128.Google Scholar
  6. [2]
    Broockmann, K. (1954), Farbe Lack, 60, 445.Google Scholar
  7. [4]
    Selden, G. and Prutton, C.F. (1940), Techn. Proc. Ann. Convention Fed of P. and V. Prod. Clubs,October 1940, p. 231, and ibid.,1941, p. 149, point out that oil and grease inhibit adhesion through absorption forces (residual valencies), because they are so strongly absorbed on to metal surfaces owing to their polar character that they prevent the polar groups of the coating material from making intimate contact with the base. On the example of the ‘greasy’ stearic acid these workers demonstrate that long straight hydrocarbon chains, because they are ‘slippery ones, without turns or twists’, cannot anchor themselves in the organic coating film.Google Scholar
  8. [5]
    Selden, G. and Prutton, C.F. ibid,1940, pp. 252–4. distinguish between two types of interstitial adhesion: The first is that produced by the penetration of the coating into the interstices of the metal surface, and the second by the penetration through a densely adhering coat of metallic oxide, sulphide, phosphate, etc, to the base metal below.Google Scholar
  9. [7]
    Brittleness due to drying in infra-red plants, see Section 4.12.Google Scholar
  10. [8]
    Sutton, H. (1943), J. of Sc. Instr., No. 61, 89.Google Scholar
  11. [9]
    Hess, M., (1944), Paint Tech., 9, No. 98, p. 29.Google Scholar
  12. [10]
    Marks, S. (1940), Paint Man.,p. 154.Google Scholar
  13. [11]
    Staudinger, H. (1952), Z. f. Angew. Ch.,64, p. 152. How tenaciously parts of solvents can be occluded purely mechanically by macromolecules may be judged from the observation that cyclohexane or carbon tetrachloride held in such a manner by cellulose could not be removed in spite of applying high vacuum for several days and in addition temperatures at 80–100°C.Google Scholar
  14. [13]
    Scherzinger, R.A. (1960), Off Dig., 1198.Google Scholar
  15. [15]
    Valentine, L.A., (1963), JOCCA, 46, 674.Google Scholar
  16. [1]
    Hooper, W.H.L. and Inglis, N.P. (1954), Chem. Ind., 44, 1344.Google Scholar
  17. [2]
    Hess, M. (1944), Paint Tech., 9, No. 98, 29.Google Scholar
  18. [3]
    Wallington, R.H. (1970), RS/T/21/70, Paint Research Association.Google Scholar
  19. [4]
    Zinc Development Association (1966), Painting of hot dip galvanized steel.Google Scholar
  20. [5]
    Whiteley, P. (1962), Tropical Building Studies,No. 4, 25, HMSO.Google Scholar
  21. [6]
    Low, C. and Vorster, O.C. (1972), JOCCA, 55, 901.Google Scholar
  22. [7]
    Reeve, J.S. (1966), Review of current literature on Paint and Allied Industries,39, 1.Google Scholar
  23. [8]
    U.S. Patent No. 2035 380.Google Scholar
  24. [1]
    Scott, F.L. (1959), Plating (U.S.A.), 46, No. 3, 261.Google Scholar
  25. [4]
    Sutton, H. (1943), J. of Sc. Instr., 20, 90.Google Scholar
  26. [1]
    Broockmann, K. (1954), Farbe Lack, 60, 445.Google Scholar
  27. [2]
    I.C.I. Pretreatment News No. 14, July 1958.Google Scholar

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© M. Hess, H.R. Hamburg and W.M. Morgans 1979

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