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Investigation of the cavitation resistance of elastic polymer coatings

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Hydrotechnical Construction Aims and scope

Conclusions

  1. 1.

    Through modification of epoxy resins by means of liquid rubbers (NVB-2 thiokol, SKN-10-1A carboxylate, etc.), use of thermoplastic and elastomer powder fillers, and thermal jet spreading of powdered polymers on epoxy primings, it is possible to increase significantly the cavitation resistance of epoxy coatings.

  2. 2.

    High cavitation resistance, close to that of 1Kh18N9T chrome-nickel steel, is obtained from coatings made from highly resilient materials (chlorosulfated polyethylene, divinylstyrene thermoelastoplastic, chloropene, polyurethane, soft rubber).

  3. 3.

    Resilient coatings, cushion and absorb the force of the cavitation impacts and reduce the effect of the impulses which tend to remove the superficial material. The protective capacity of resilient coatings against cavitation wear increases as the coatings are made thicker.

  4. 4.

    For practical utilization of resilient, polymer coatings for protection of hydraulic machines against wear, it is necessary to follow carefully the techniques for preparation of the surface, preparation of the composition, and application of the coating and for establishment of the composition of combined coatings, to take into account the operating characteristics of the particular machine, and, primarily, the intensity of the cavitation.

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Literature Cited

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Authors
  1. I. M. Kats
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Additional information

Translated from Gidrotekhnicheskoe Stroitel’stvo, No. 6, pp. 28–32, June, 1974.

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Kats, I.M. Investigation of the cavitation resistance of elastic polymer coatings. Hydrotechnical Construction 8, 539–544 (1974). https://doi.org/10.1007/BF02399153

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  • DOI: https://doi.org/10.1007/BF02399153

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