1、AEROSPACE MATERIAL SPECIFICATION AMS3907/1 Issued 1985-10 Reaffirmed 2014-08 Cloth, Aramid 5 oz per sq yd (170 g/m2) Basket Weave RATIONALE AMS3907/1 has been reaffirmed to comply with the SAE five year review policy. _ SAE Technical Standards Board Rules provide that: “This report is published by S
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5、ttp:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS3907/1 1. SCOPE:1.1 Form:cloth.This specification covers one weight and type of weave of aramid1.2 Application: Primarily for use in the fabrication of special
6、clothing.1.3 Classification: Shall consist of 5 oz par sq yd (170 g/m2) aramid clothwith a basket weave and the following classes:Class 1 - Type 456 fiberClass 2 - Type 452 fiberClass 3 - Type 457 fiber2. APPLICABLE DOCUMENTS: See AMS 3907.3. TECHNICAL REQUIREMENTS:3.1 Basic Specification: The compl
7、ete requirements for procuring the clothdescribed herein shall consist of this document and the latest issue of thebasic specification, AMS 3907.3.2 Properties: Shall conform to the requirements of Table I and the following:3.2.1 Yarn: Shall be spun into singles.3.2.2 Flame Resistance: The flame fro
8、m a Meker burner shall not pass from theflame side to the other side of a cloth due to the cloth breaking open.SAE INTERNATIONAL AMS3907/1 Page 2 of 5 3.2.3 Color: The color of each cloth shall be obtained by the use of dry spunsolution dyed fiber and shall be as shown below; colors shown are theman
9、ufacturers identification number for each color:Fiber Type Color457 Olive Green 106452 Sage Green 1565456 Sage Green 15903.2.3.1 Matching: The color of the finished cloth shall match the standardsample under artificial daylight having a correlated color temperatureof 7,000“ Kelvin + 500 and shall be
10、 a good approximation to the standardsample under incanaescent lamplight at 2,850“ Kelvin 100.3.2.3.2 Colorfastness: The dyed and finished cloth shall show colorfastness tolight and to laundering equal to or better than the standard sample.3.2.4 Weave: Shall be a 2 x 2 basket weave.3.2.5 Width: Shal
11、l be not less than 45 in. (1,140 mm) inclusive of theselvages. When the cloth has shuttleless loom selvages, the width of thecloth should be as specified and shall be not less than the width of thewoven cloth, excluding the selvages.3.2.6 Nonfibrous Material: Prior to application of the antistatic f
12、inish, thecloth shall contain not more than 1.0% starch and protein including thechloroform-soluble and water-soluble material.3.2.7 Finishing: Cloth shall be desized, scoured, heat set and given a suitabledurable antistatic finish to meet the requirements of Table I,3.2.7.1 Finishing Procedure: Clo
13、th should be finished by a procedure equivalentto the following:3.2.7.1.1 Scour open width on continuous scouring range at 70C 3 (160F 5)in the scouring solution of 0.14 oz per gal (1.0 g/L) oftrisodiumphosphate and detergent.3.2.7.1.2 Dry at 150C 5 (300F 9) to set construction.3.2.7.1.3 Autoclave h
14、eat set using the following procedure:5 min. pre-vacuum20 min. 30 psi (207 kPa) steam5 min. vacuum20 min. 30 psi (207 kPa) steam5 min. vacuumExhaust to airSAE INTERNATIONAL AMS3907/1 Page 3 of 5 3.2.7.1.3.13.2.7.1.3.23.2.7.1.3.33.2.7.1.3.43.2.7.1.3.53.2.7.1.3.6Prior to calendering, do not stretch th
15、e cloth during drying, ineither direction, such that the warp is raised and the filling isburied, or vice-versa. The calendering, to be uniform and developan uniform sheen on the cloth, shall score or line both warp andfill. If the calender has a polish roll, this should be by-passedor not used.The
16、calender should have a standard bottom roll with a hardness ofR 80 - 84 and a Schreiner roll with a maximum line variation fromthe horizontal (up to 90 degrees).Autoclaving should follow the calendering in sequence to set theeffects of calendering into the cloth.Each finisher should have a standard
17、sample on hand showing thedesired sheen in the finished cloth for comparison with, and forcontrol of, mill production.The calendering conditions, to match the standard, will beapproximately 30 ton (27,215 kg) pressure at 215C 6(425F 19,. The sheen should be checked after calendering andagain after;
18、autoclaving until the required conditions on the millsequipment are defined.The fabric selvage should not be so wide or so thick as to preventthe calendering from developing the desired sheen on the body cloth.3.2.7.1.4 Pad on the antistatic solution:6.6% antistatic material (See 8.2)2.7% accelerato
19、r material (See 8.2)Set pH at 6.5Wet pick up 50 to 60%Dry at 150C 6 (300F + 10)Cure at 175C 6 (35OF 10) for 10 minutes3.2.8 Curling: The finished cloth shall lie flat, without distortion, and showno evidence of curling.4. QUALITY ASSURANCE PROVISIONS: See AMS 3907.5. PREPARATION FOR DELIVERY: See AM
20、S 3907.6. ACKNOWLEDGMENT: See AMS 3907.7. REJECTIONS: See AMS 3907.SAE INTERNATIONAL AMS3907/1 Page 4 of 5 8. NOTES: See AMS 3907 and the following:8.1 Cloth requirements in this specification were based on a constructionusing 24/l warp and filling yarn. An in-loom construction of 86 ends x 86picks,
21、 reeded 2 per dent, has been successful in the production of thiscloth.8.2 The requirements for the durable antistatic treatment can be met withAston 123, and using Accelerator EN, Onyx Chemical Company, 190 WarrenStreet, Jersey City, NJ 07032. Other products considered for this useshall have prior
22、approval of the purchaser.SAE INTERNATIONAL AMS3907/1 Page 5 of 5 TABLE IPROPERTIESRequirementValueWeight, min5 oz per sq yd (170 g/m2)Yarns per in. (25.4 mm), minWarp90 per in. (25.4 mm)Filling88 per in. (25.4 mm)Breaking Strangth (Grab), minWarp100 lb (445 N)Filling100 lb (445 N)Tearing Strength,
23、minWarp and Filling 15 lb (65 N)Air Permeability at l/2 in. (12.5 mm)Water Pressure, min 100 cu ft/min./sq ft(30.4 m3/min./m2)Flame Resistance, maxFlaminq 2 secGlow Time 25 secAverage Char Length 3.5 in. (90 mm)Resistivity After Antistatic Finishing, maxBefore Laundering 3.0 x 1011ohms per squareAfter 5 Launderings 8.0 x 1011ohms per squarepH of Water Extract of Finished Cloth 5.0 to 8.0Dimensional Stability, Shrinkage After15 Launderings, maxWarp Direction 4.0%Filling Direction 1.5%Seam Efficiency, min 80%
