Arti dan Tujuan
3.1 Efek apa pun, seperti perubahan warna, melepuh. Amati dan catat hilangnya adhesi, softening or brittleness.

Ruang lingkup
1.1 The practice consists of determining the failure resistance of organic finishes immersed in detergent solutions in an accelerated manner.

1.2 Nilai yang dinyatakan dalam satuan SI harus dianggap sebagai standar. Nilai dalam tanda kurung hanya untuk referensi.

1.3 Standar ini tidak dimaksudkan untuk mengatasi semua masalah keselamatan (meaning and purpose) terkait dengan penggunaannya

4.1 Untuk banyak aplikasi, the ability of a paint or coating to resist deterioration of physical and optical properties due to exposure to light, panas, and water may be very important. This practice aims to cause changes in attributes related to end-use conditions, including the effects of sunlight, kelembaban, and heat. The exposures used in this practice are not intended to model the deterioration caused by local weather phenomena such as atmospheric pollution, biological attack, and saline-water exposure.

4.2 Caveats – Results may change when different operating conditions are used. Karena itu, no reference to the use of this practice may be made unless accompanied by a report prepared under Section 10 describing the specific operating conditions used. See Practice G151 for details of the caveats applicable to the use of the results obtained under this practice.

ASTM D 5031-2018 “Uji Paparan Busur Karbon Tertutup untuk Cat dan Pelapis Terkait”

Catatan 2: Untuk informasi tambahan tentang sumber variabilitas dan strategi mengatasi variabilitas dalam desain, eksekusi, and data analysis of laboratory accelerated exposure trials, lihat Panduan G141.

4.2.1 The spectral power profiles of light from a closed carbon arc are significantly different from those generated by light and water exposure devices using other carbon arc configurations or other light sources. The type and rate of degradation and performance ranking generated by exposure to closed carbon arcs may be quite different from those generated by exposure to other types of laboratory light sources.

4.2.2 Inter-laboratory comparisons are valid only if all laboratories use the same type of carbon arcs, filters, and exposure conditions.

4.3 The reproducibility of test results between laboratories has been shown to be good when evaluating the stability of the material according to the performance class compared to other materials or controls. IV,5 Karena itu, it is highly recommended to expose similar materials with known properties (kontrol) bersamaan dengan materi tes. At least three replications of each material are recommended to allow statistical evaluation of the results.

4.4 Test results will depend on the degree of care taken to operate the equipment according to practice G153. Important factors include regulation of line voltage, absence of salt or other water deposits, temperature and humidity control, and electrode conditions.

4.5 All exposures referred to in accordance with this practice shall include a complete description of the test period used.

ASTM D 5031-2018 “Uji Paparan Busur Karbon Tertutup untuk Cat dan Pelapis Terkait”

Ruang lingkup
1.1 This procedure covers the selection of test conditions for accelerated exposure testing of coatings and related products in closed carbon arc units operated in accordance with practices G151 and G153. The practice also includes preparation of specimens, suitable test conditions for coatings, and evaluation of test results. Meja 1 describes the commonly used test conditions.

1.2 This practice does not include filtered open-flame carbon arc exposure of paints and associated coatings, as described in Practice D822/D822M. Practice D3361/D3361M covers an additional procedure for exposing these products, where specimens are exposed to radiation from an unfiltered open flame carbon arc that produces shorter wavelengths and higher levels of shorter-wavelength radiation than a filtered open flame or closed carbon arc.

Catatan 1: Practice D3361/D3361M requires the use of an open flame carbon arc device with automatic humidity control.

1.3 Nilai yang dinyatakan dalam satuan SI atau satuan inci-pon harus diperlakukan secara terpisah sebagai nilai standar. Nilai-nilai yang ditentukan dalam setiap sistem mungkin tidak sama persis; Karena itu, setiap sistem harus digunakan secara independen satu sama lain. Penggabungan nilai-nilai kedua sistem dapat mengakibatkan ketidakpatuhan terhadap kriteria.

1.4 Standar ini tidak dimaksudkan untuk mengatasi semua masalah keselamatan, jika ada, terkait dengan penggunaannya. Pengguna standar ini bertanggung jawab untuk menetapkan keselamatan yang sesuai, praktik kesehatan dan lingkungan dan untuk menentukan penerapan pembatasan peraturan sebelum digunakan.

ASTM D 5031-2018 “Uji Paparan Busur Karbon Tertutup untuk Cat dan Pelapis Terkait”

1.5 Standar internasional ini telah dikembangkan sesuai dengan prinsip-prinsip standardisasi yang diakui secara internasional yang ditetapkan dalam Keputusan Prinsip-Prinsip Pengembangan Standar Internasional, Pedoman dan Rekomendasi yang dikeluarkan oleh Komite Hambatan Teknis Perdagangan Organisasi Perdagangan Dunia. If any). Pengguna standar ini bertanggung jawab untuk menetapkan keselamatan yang sesuai, praktik kesehatan dan lingkungan dan untuk menentukan penerapan pembatasan peraturan sebelum digunakan.

1.4 Standar internasional ini telah dikembangkan sesuai dengan prinsip-prinsip standardisasi yang diakui secara internasional yang ditetapkan dalam Keputusan Prinsip-Prinsip Pengembangan Standar Internasional, Pedoman dan Rekomendasi yang dikeluarkan oleh Komite Hambatan Teknis Perdagangan Organisasi Perdagangan Dunia.