ISO 7784-3:2016 塗料とワニス—耐摩耗性の測定—パート3：研磨紙で覆われたホイールと直線的に往復する試験片を使用する方法 | ページ 2

Foreword

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The committee responsible for this document is ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes.

This second edition cancels and replaces the first edition (ISO 7784-3:2000), which has been technically revised with the following changes:

• a) the title has been changed;
• b) the terms and definitions clause has been amended;
• c) a figure explaining the principle of the method was amended;
• d) the supplementary test conditions previously in Annex A have been integrated in the test report;
• e) the calibration of the apparatus previously in Annex B has been deleted;
• f) the test procedure has been re-arranged;
• g) the text has been editorially revised and the normative references have been updated.

ISO 7784 consists of the following parts, under the general title Paints and varnishes — Determination of resistance to abrasion:

• Part 1: Method with abrasive-paper covered wheels and rotating test specimen
• Part 2: Method with abrasive rubber wheels and rotating test specimen
• Part 3: Method with abrasive-paper covered wheel and linearly reciprocating test specimen

Introduction

This part of ISO 7784 is one of the three parts of ISO 7784 dealing with test methods for the determination of the resistance to abrasion of coatings using abrasive wheels. The characteristics and differences of these methods are summarized in Table 1.

The methods using abrasive-paper covered wheels (ISO 7784-1 and ISO 7784-3) are preferably to be applied.

1 Scope

This part of ISO 7784 specifies a method for determining the resistance to abrasion of coatings, for which a loaded, rigid abrasive-paper covered wheel affects the coating of the linearly reciprocating test specimen.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.

Bibliography