ASTM C1511-2004 Standard Test Method for Determining the Water Retention (Repellency) Characteristics of Glass Fiber Insulation (Aircraft Type)《玻璃纤维绝缘材料(飞行器型)的水分保持(抵抗性)特征测定的标准试验方法》.pdf
《ASTM C1511-2004 Standard Test Method for Determining the Water Retention (Repellency) Characteristics of Glass Fiber Insulation (Aircraft Type)《玻璃纤维绝缘材料(飞行器型)的水分保持(抵抗性)特征测定的标准试验方法》.pdf》由会员分享,可在线阅读,更多相关《ASTM C1511-2004 Standard Test Method for Determining the Water Retention (Repellency) Characteristics of Glass Fiber Insulation (Aircraft Type)《玻璃纤维绝缘材料(飞行器型)的水分保持(抵抗性)特征测定的标准试验方法》.pdf(2页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: C 1511 04Standard Test Method forDetermining the Water Retention (Repellency)Characteristics of Fibrous Glass Insulation (Aircraft Type)1This standard is issued under the fixed designation C 1511; the number immediately following the designation indicates the year oforiginal adoption or
2、, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers a laboratory procedure forevaluating the water absorpt
3、ion potential of blanket insulationfor aircraft, thereby providing a measure of potential weightincrease due to water retention in an aircraft.1.2 The water repellency (or retention) characteristics ofmaterials may be affected by conditions such as contaminationor temperature of the water. Values ob
4、tained as a result of thistest method may not adequately describe the water repellencycharacteristics of materials subject to these conditions.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standar
5、d to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C 168 Terminology Relating to Thermal InsulationC 390 Criteria for Sampling and Acceptance of PreformedInsulation LotsC 800 Speci
6、fication for Fibrous Glass Blanket Insulation(Aircraft Type)E 691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3. Terminology3.1 DefinitionsTerminology C 168 shall be considered asapplying to the terms used in this specification.4. Summary of Test Method
7、4.1 The insulation is weighed then submerged in de-ionized(or distilled) water for 15 min; it is drained for 60 s andreweighed. The amount of water retained is the difference inspecimen weights and is expressed in grams.5. Significance and Use5.1 The water retention of the insulation can result in a
8、nincrease in weight and a resultant potential degradation in theproperties of the insulation.6. Apparatus6.1 The water repellency test apparatus is shown in Fig. 1.6.2 Scale, accurate to 0.1 g.7. Sampling, Test Specimens, and Test Units7.1 Three specimens shall be tested, taken from across thewidth
9、of a representative package. Sampling techniques shallbe in accordance with Criteria C 390.7.2 The specimens shall be 10- by 10-in. (254- by 254-mm)by full sample thickness; samples shall be no thicker than 4-in.(100-mm)7.3 The insulation shall be tested without facing or jacket-ing.8. Conditioning8
10、.1 No conditioning of the specimen is required.9. Procedure9.1 Weigh each specimen to the nearest 0.1 g.9.2 Float each specimen on the surface of a vat of de-ionized (or distilled) water at 70 6 4F (21 6 2C). Lay a0.25-in. (6.4-mm) mesh rigid screen on top of each specimenand slowly submerge it to a
11、 level that is 5 in. (127 mm) belowthe surface of the water. Fix the screen in position as shown inFig. 1. After 15 6 1 min, release the screen and raise thespecimens slowly until they float. Remove the screen. Grip1This test method is under the jurisdiction of ASTM Committee C16 on ThermalInsulatio
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