GB/T 39490-2020Test method for liquid impingement erosion resistance of fiber-reinforced plastics—Rotating apparatus method (English PDF)

1 Scope

This standard specifies the principles, test equipment, samples, test conditions,

Test procedure, test report.

This standard is applicable to the determination of the liquid impact resistance of fiber-reinforced plastics and their protective coatings by the rotating device method.

The method and erosion-time curve method are applicable to fiber reinforced plastics and protective coatings, and the degradation state method is only applicable to protective coatings.

This standard does not apply to continuous liquid jet erosion and liquid or mud erosion erosion.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this document.

For undated references, the latest version (including all amendments) applies to this document.

GB/T 1446 General Principles of Test Methods for Performance of Fiber Reinforced Plastics

GB/T 1463 Fiber-reinforced plastic density and relative density test method

GB/T 3854 Barcol hardness test method for reinforced plastics

GB/T 3961 Terminology for fiber reinforced plastics

GB/T 5206 Paints and varnishes terms and definitions

GB/T 13452.2 Determination of film thickness of paints and varnishes

GB/T 30789.1 Evaluation of paint and varnish coating ageing. Identification of the number and size of defects and the degree of uniform change in appearance. Part 1.General rules and identification system

GB/T 30789.2 Evaluation of paint and varnish coating aging. Identification of the number and size of defects and the degree of uniform change in appearance. Part 2.Evaluation of blistering level

GB/T 30789.4 Evaluation of paint and varnish coating ageing. Identification of the number and size of defects and the degree of uniform change in appearance. Part 4.Evaluation of cracking level

GB/T 30789.5 Evaluation of paint and varnish coating ageing. Identification of the number and size of defects and the degree of uniform change in appearance. Part 5.Evaluation of peeling grade

GB/T 30789.6 Evaluation of paint and varnish coating ageing. Identification of the number and size of defects and the degree of uniform change in appearance. Part 6.Evaluation of chalking grade by tape method

ISO 13076 Lighting and procedures for visual evaluation of paint and varnish coatings

ISO 19403-2 Paints and varnishes wettability Part 2.Determination of the free energy of solid surfaces by measuring the contact angle

3 Terms and definitions

The following terms and definitions defined in GB/T 3961 and GB/T 5206 apply to this document.