Kata Pengantar
ISO (Organisasi Internasional untuk Standardisasi) adalah federasi global badan standar nasional (badan anggota ISO). Pengembangan standar internasional biasanya dilakukan melalui komite teknis ISO. Setiap kelompok anggota yang berminat pada mata pelajaran yang telah dibentuk panitia teknis berhak untuk diwakili dalam panitia. Organisasi internasional, pemerintah dan LSM yang bekerja sama dengan ISO juga terlibat dalam upaya ini. ISO bekerja sama dengan Komisi Elektroteknik Internasional (IEC) tentang semua masalah standardisasi elektroteknik.

Bagian 1 Petunjuk ISO/IEC menjelaskan prosedur yang digunakan untuk mengembangkan dokumen ini serta prosedur yang digunakan untuk pemeliharaan lebih lanjut. Secara khusus, perhatian harus diberikan pada kriteria persetujuan berbeda yang diperlukan untuk berbagai jenis dokumen ISO. Dokumen ini telah disusun sesuai dengan aturan editorial Bagian 2 dari Petunjuk ISO/IEC (lihat iso.org/directives).

Harap dicatat bahwa elemen tertentu dari dokumen ini mungkin memiliki hak paten. ISO tidak bertanggung jawab untuk mengidentifikasi salah satu atau seluruh hak paten tersebut. Details of any patent rights identified during the development of the document will be in the profile and/or in the list of ISO patent claims received (lihat iso.org/patents).

Any trade names used in this document are provided as information for the convenience of users and do not constitute an endorsement thereof.

Interpretasi sukarela, related standards and conformity assessment related ISO specific terminology and express the meaning of and the ISO in the technical barriers to trade (TBT) adhere to the principle of the world trade organization (WTO) information, please see the iso.org/iso/foreword.html.

ISO 6504-3-2019 – Penentuan daya sembunyi cat dan pernis – Bagian 3: Penentuan kekuatan persembunyian pasangan bata, cat beton dan interior

This document is prepared by Technical Committee ISO/TC 35, Cat dan pernis, Sub Komite SC 9, Metode pengujian umum untuk cat dan pernis.

The third edition eliminates and replaces the technically revised second edition (ISO 6504-3:2006). Perubahan utama dari edisi sebelumnya adalah sebagai berikut:

– The title and scope are limited to masonry and concrete coatings;

– Added the definition of light paint;

— Introduction of a new method applicable only to water-based coatings (Metode C);

— The determination of mass per unit area of dry coating and the determination of actual spread rate have been deleted (ISO 3233-3 can be used instead);

– The reference to a fixed spread rate has been removed from the introduction, scope and test report (it was removed from the previous version of the program);

— Historical precision values for methods A and B have been removed from the specification section, and information on new inter-laboratory comparisons for Method C has been added to the informational annex, Lampiran A;

— Updated normative citation documents.

A list of all parts of the ISO 6504 seri dapat ditemukan di situs web ISO.

ISO 6504-3-2019 – Penentuan daya sembunyi cat dan pernis – Bagian 3: Penentuan kekuatan persembunyian pasangan bata, cat beton dan interior

Perkenalan
When determining the hiding power of masonry and concrete coatings, there are two techniques that can be used for substrate preparation and measurement:

A) Apply to colorless transparent foil, and then place the coated foil on the black and white panels in turn;

B) Direct application to black and white charts.

The spread rate is important for determining the covering power ratio. The spread rate can be determined according to ISO 3233-3 or according to another simplified method described in the standard specified in EN 13300 applicable to interior wall and ceiling coatings.

Because different operators using the same pull-down device will obtain coatings with significantly different thicknesses, this document describes an absolute opacity determination method. Collaborative trials between expert groups from multiple countries/regions have shown that reproducible results can be obtained by interpolating between measurements at two or more nearby measured coating thickness and including the specified spread rate to determine the covering power corresponding to the accurately specified spread rate. Stakeholders may agree on a specified transmission rate.

These methods are based on the observation that the hiding power is approximately a linear function of the inverse of the spread rate over a limited range of coating thickness that also corresponds to normal application of white or light paint. Dengan demikian, it is possible to interpolate between the results obtained with coatings of different thicknesses either graphically or by calculation with satisfactory accuracy.

ISO 6504-3-2019 – Penentuan daya sembunyi cat dan pernis – Bagian 3: Penentuan kekuatan persembunyian pasangan bata, cat beton dan interior

1 Lingkup aplikasi
This document specifies the method for determining the hiding power, white or light color tristimulus values Y and Y 10 lebih besar dari 25 paint coating applied to black and white charts or colorless transparent foil. In the latter case, the tristimulus values Y and Y 10 are measured on the black and white panels. Kemudian, the hiding power was calculated from these tristimulus values.

The document also provides for a simple method to calculate the diffusivity of coatings with low volatile matter content and low evaporation rates, such as interior wall and ceiling coatings specified in EN 13300.

2 Dokumen referensi normatif
Ketika dokumen-dokumen berikut dirujuk dalam teks, sebagian atau seluruh isinya merupakan persyaratan dokumen ini. Untuk referensi bertanggal, hanya versi yang dikutip yang berlaku. Untuk kutipan tak bertanggal, versi baru dari dokumen kutipan (termasuk revisi apa pun) berlaku.

ISO 1513, Cat dan pernis — Inspeksi dan persiapan sampel uji

ISO 2811 (semua bagian), cat dan pernis — Penentuan kepadatan

ISO 3251, Cat, pernis dan plastik – Penentuan kandungan zat yang tidak mudah menguap

ISO 3233-3:2015, Paints and varnishes-determination of percentage of nonvolatile matter by volume – Bagian 3: Nonvolatile matter content, density of coating materials and density of solvents in coatings as determined in accordance with ISO 3251

ISO 15528, Cat, pernis dan bahan baku cat dan pernis — Contoh

DI DALAM 13300, Cat dan pernis – Water-based paints and coating systems for interior walls and ceilings – Classification

ISO 6504-3-2019 – Penentuan daya sembunyi cat dan pernis – Bagian 3: Penentuan kekuatan persembunyian pasangan bata, cat beton dan interior

3 Istilah dan definisi

Untuk tujuan dokumen ini, istilah dan definisi berikut berlaku.

ISO dan IEC memelihara database terminologi untuk standardisasi di alamat berikut:

– Platform penjelajahan online ISO iso.org/obp

– Elektropedia IEC: tersedia di electropedia.org/

3.1 Cat ringan

Pelapisan dengan nilai tristimulus Y dan Y 10 lebih besar dari 25 diukur dengan spektrofotometer pada substrat hitam putih

[Sumber: ISO 6504-1:2019, 3.1]

3.2 Transmission rate

A certain amount of paint can cover the surface area to provide the desired thickness of the dry film

Catatan 1: Expressed as m 2 /l or m 2 /kg.

Catatan masuk 2: See also application rate, actual spread rate, and theoretical spread rate.

[Sumber: ISO 4618:2014, 2.238]

3.3 Actual seeding rate

Actual spread rate obtained on the specific substrate to be coated (3.2)

[Sumber: ISO 4618:2014, 2.203]

3.4 Theoretical spread rate

Diffusivity based only on the volume of non-volatile matter (3.2)

[Sumber: ISO 4618:2014, 2.256]

ISO 6504-3-2019 – Penentuan daya sembunyi cat dan pernis – Bagian 3: Penentuan kekuatan persembunyian pasangan bata, cat beton dan interior

3.5 Hiding Power

The ability of a coating to eliminate the color or chromatic aberration of a substrate

Catatan Masuk 1: The German expressions “Deckkraft” Dan “Deckfahigkeit” should be avoided.

Catatan Masuk 2: Syarat “coverage” is ambiguous because it is used in some contexts to refer to coverability and in others to refer to transmission rate. More precise terms for covering power and spread rate should always be used.

[Sumber: ISO 4618:2014, 2.138]

3.6 Tristimulus value (color stimulus)

Dalam sistem tiga warna tertentu, the number of the three reference stimuli needs to match the color of the stimulus under consideration

Catatan 1: In the CIE standard chrominance system, the tristimulus values are represented by the symbols X, Y, Z and X 10, Y 10, Z 10.

[Sumber: ISO 11664‑2:2007, 3.14]

Hanya komponen informasi standar yang tersedia untuk umum. Untuk melihat konten selengkapnya, Anda harus membeli standar melalui jalur formal.