This Technical Specification specifies a test method for assessing the resistance of a coating to impact on a defined and carefully selected wooden substrate for coatings on wood components in exterior use. The method is preferably used on coatings that have not been exposed to weathering. The method is suitable for use either as a means of comparing different coating systems or as a quality control test to ensure that a specified performance level is being achieved or maintained. The nature of the substrate will have a major effect on the results obtained in the test. Therefore use of any other substrate than the one specified should be clearly stated in the test report.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 4<\/td>\n | Contents Page <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 4 Principle 5 Apparatus and materials Figure 1 \u2014 Impact on surface <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 6 Procedure 6.1 Wood panels 6.2 Coating application 6.3 Assessment of resistance to impact 6.3.1 General Figure 2 \u2014 Impact points on surface <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 6.3.2 Impact test 6.3.3 Examination of test panel 6.3.4 Assessment of results <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Table 1 \u2014 Descriptive numerical rating code Figure 3 \u2014 Visible changes <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | 7 Test report <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Paints and varnishes. Coating materials and coating systems for exterior wood. Assessment of resistance to impact of a coating on a wooden substrate<\/b><\/p>\n |