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Influence of moisture on mechanical properties of carbon-reinforced plastics with various porosities

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Mechanics of Composite Materials Aims and scope

Conclusions

  1. 1.

    Water sorption does not have any significant effect on those mechanical characteristics of carbon-reinforced plastic that are determined mainly by the properties of the reinforcing material, even with porosities of the plastic up to 15%. The values of the elastic characteristic, which are considerably dependent on the properties of the matrix, are lowered by 10–16%.

  2. 2.

    An increase in porosity of carbon-reinforced plastic does not have any great adverse effect on the mechanical characteristics. This means that only the moisture present in the intermolecular interstices is active in terms of effects on the mechanism of deformation and fracture.

  3. 3.

    The change in elastic and strength properties of CFRP as a result of moisture absorption are partially reversible.

  4. 4.

    The kinetics of moisture absorption depend not only on the total porosity, but also on the ratio of open and total porosities.

  5. 5.

    The porosity of carbon-reinforced plastic shows a significant correlation with moisture absorption; it is necessary, however, to take into account the mechanism of moisture transport.

  6. 6.

    From the results obtained in measurements of moisture content, not only the magnitude of the porosity can be judged, but also the uniformity of pore distribution through the volume of the carbon reinforced plastic.

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Authors and Affiliations

  1. Obninsk Scientific-Industrial Association Tekhnologiya, USSR

    Yu. Yu. Perov & E. Yu. Kruzhkova

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  1. Yu. Yu. Perov
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  2. E. Yu. Kruzhkova
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Translated from Mekhanika Kompozitnykh Materialov, No. 2, pp. 223–229, March–April, 1991.

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Perov, Y.Y., Kruzhkova, E.Y. Influence of moisture on mechanical properties of carbon-reinforced plastics with various porosities. Mech Compos Mater 27, 144–151 (1991). https://doi.org/10.1007/BF00614729

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  • DOI: https://doi.org/10.1007/BF00614729

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