ASTM D7514-2014 red 4837 Standard Test Method for Evaluating Ink Stainblocking of Architectural Paint Systems by Visual Assessment《采用目视评价法评估建筑涂料系统墨水片块染色的的标准试验方法》.pdf
《ASTM D7514-2014 red 4837 Standard Test Method for Evaluating Ink Stainblocking of Architectural Paint Systems by Visual Assessment《采用目视评价法评估建筑涂料系统墨水片块染色的的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM D7514-2014 red 4837 Standard Test Method for Evaluating Ink Stainblocking of Architectural Paint Systems by Visual Assessment《采用目视评价法评估建筑涂料系统墨水片块染色的的标准试验方法》.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D7514 09D7514 14Standard Test Method forEvaluating Ink Stainblocking of Architectural Paint Systemsby Visual Assessment1This standard is issued under the fixed designation D7514; the number immediately following the designation indicates the year oforiginal adoption or, in the case of r
2、evision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This standard provides a method for evaluating the ability of an architectural paint system to bl
3、ock ink stains from markersand writing instruments from bleeding through a primer into a topcoat.1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.3 This standard does not purport to address all of the safety concerns, if
4、any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.2. Referenced Documents2.1 ASTM Standards:2D823 Practices for Producing Films of Uniform Thick
5、ness of Paint, Varnish, and Related Products on Test PanelsD1640 Test Methods for Drying, Curing, or Film Formation of Organic Coatings at Room TemperatureE177 Practice for Use of the Terms Precision and Bias in ASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study to Determine the
6、Precision of a Test Method3. Terminology3.1 Definitions:3.1.1 stainblocking, nthe ability of a paint or coating to prevent stains from bleeding through into the top finish.4. Summary of Test Method4.1 Asubstrate, typically a painted surface or an uncoated building material, is stained using a series
7、 of ink writing implements.4.2 The stained substrate is coated with the test paints and allowed to dry for a specified interval.4.3 The test paints are top-coated with a wall paint and the test paint/topcoat system is evaluated for stainblocking effectiveness.5. Significance and Use5.1 This standard
8、 may be used by paint companies and raw material suppliers to assess effectiveness of interior architecturalprimers for blocking stains from bleeding through to a topcoat.5.2 In practice, different ink-stained substrates may give various results for stainblocking performance for a primer and topcoat
9、system. As such, this test method may be used for a number of different ink-stained surfaces.6. Apparatus6.1 Film applicator, such as a drawdown bar, capable of applying 0.075 to 0.100 mm (3 to 4 mil) wet film thickness with aminimum film width as needed to cover the test area defined in 9.2.6.2 Rul
10、er or suitable straight edge instrument.1 This test method is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility ofSubcommittee D01.42 on Architectural Coatings.Current edition approved Feb. 1, 2009Jan. 1, 2014. Pu
11、blished February 2009February 2014. Originally approved in 2009. Last previous edition approved in 2009 as D7514 09. DOI: 10.1520/D7514-09.10.1520/D7514-14.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM
12、 Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically pos
13、sible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, W
14、est Conshohocken, PA 19428-2959. United States17. Reagents and Materials7.1 Substrate desired for testing. The substrate must be able to accept a variety of ink marks and must have a uniform flat surfaceto enable paint films to be applied with a drawdown bar applicator.Asealed drawdown chart coated
15、with a base paint is commonlyused.7.2 Staining media selected from among the following materials:7.2.1 Permanent marker.7.2.2 Washable marker.7.2.3 Dry erase marker.7.2.4 Ink pen.7.2.5 Highlighter.7.2.6 Other suitable writing implements as agreed upon between purchaser and seller.NOTE 1Parties invol
16、ved in comparing ink stainblocking results between laboratories must ensure the selected writing implements are from a commonsupply. This is important as inks may produce different staining effects depending on their age, storage conditions, or manufactured lot. Additionally, itmay be useful when re
17、placing ink pens or markers with a new supply to conduct a comparison of old and new to validate if new ink stainblocking resultswill correlate to historical findings.8. Hazards8.1 The user of this standard should refer to appropriate MSDS for hazards associated with handling of paint samples or oth
18、erlaboratory items used as specified in this standard.9. Procedure9.1 Substrate Preparation:9.1.1 If the primer/topcoat system is to be evaluated directly over an existing substrate that will accept ink stains, proceeddirectly to the ink-staining procedure in 9.1.3.9.1.2 If no specific substrate is
19、identified for the evaluation, a test substrate shall be prepared by coating a drawdown chart witha suitable basecoat as follows.9.1.2.1 Select a paint to use as a basecoat. Any commercially available white flat wall paint may be used for this purpose.NOTE 2Because different basecoat paints will var
20、y in how they accept the ink stains, performance can only be compared for tests using the samesubstrate system.9.1.2.2 Apply the selected basecoat paint to an all-white sealed drawdown chart to achieve a wet-film thickness ofapproximately 0.075 mm (3.0 mils). The application shall be conducted in ac
21、cordance with any appropriate practice described inPractices D823.9.1.2.3 The basecoat paint must cover enough of the width of the drawdown chart to enable smooth passage of the drawdownbar for subsequent coats of test paint. The progression of paint applications for this standard beginning with the
22、 basecoatapplication is represented in Fig. 1.9.1.2.4 Allow basecoat paint to dry overnight. Environmental conditions during drying of the basecoat paint are not critical tothe end test result, however, the basecoat paint should be Dry-Through as described in Test Methods D1640 before continuing.9.1
23、.3 Using a straight edge as a guide, make a series of solid stain lines perpendicular to the direction of the drawdown withvarious ink markers and pens as specified in 7.2. It is generally suggested to select inks of varying chemical composition such asthose having different carrier solvents.9.1.4 A
24、minimum of 2 colors of each marker and pen is recommended. Leave a minimum of 3 mm unstained area between eachstain line.D7514 142NOTE 3Selecting a variety of colors for each stain is recommended as this gives an indication of a coating systems stainblocking ability using acommon ink composition but
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