1、PERFORMANCE SPECIFICATIONPLASTIC SHEET, ACRYLIC, MODIFIEDThis specification is approved for use by all Departments and Agencies of the Departmentof Defense.1. SCOPE1.1 Scope . This specification covers optical quality, transparent, modified acrylic plasticsheet.1.2 Classification . The plastic sheet
2、 is furnished in the following types and classes (see 6.2).1.2.1 Types . The types of plastic sheet are as follows:Type I - For “as cast“ applications or for stretching.Type II - For “as cast“ applications only; not for stretching.1.2.2 Classes . The classes of plastic sheet are as follows:Class 1 -
3、 Standard moisture absorption resista nce.Class 2 - Improved moisture absorption resistance.AMSC N/A FSC 9330DISTRIBUTION STATEMENT A . Approved for public release; distribution is unlimited.INCH-POUNDMIL-PRF-8184F5 October 1998SUPERSEDINGMIL-P-8184E1 February 1989Beneficial comments (recommendation
4、s, additions, deletions) and any pertinent data which maybe of use in improving this document should be addressed to: Commander, Naval Air WarfareCenter Aircraft Division, Code 414100B120-3, Highway 547, Lakehurst, NJ 08733-5100, byusing the Standardization Document Improvement Proposal (DD Form 142
5、6) appearing at theend of this document or by letter.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8184F22. APPLICABLE DOCUMENTS2.1 General . The documents listed in this section are specified in sections 3 and 4 of thisspecification. This
6、section does not include documents cited in other sections of this specificationor recommended for additional information or as examples. While every effort has been made toensure the completeness of this list, document users are cautioned that they must meet allspecified requirements documents cite
7、d in sections 3 and 4 of this specification, whether or notthey are listed.2.2 Government documents .2.2.1 Specifications . The following specifications form a part of this document to the extentspecified herein. Unless otherwise specified, the issues of these documents are those listed in theissue
8、of the Department of Defense Index of Specifications and Standards (DoDISS) andsupplement thereto, cited in the solicitation (see 6.2).SPECIFICATIONSFEDERALA-A-59107 - Toluene, TechnicalTT-I-735 - Iso propyl Alcohol(Unless otherwise indicated, copies of the above specifications are available from th
9、eStandardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA19111 -5094.)2.3 Non-Government publications . The following documents form a part of this documentto the extent specified herein. Unless otherwise specified, the issues of the documents which areDoD adopted are t
10、hose listed in the issue of the DoDISS cited in the solicitation. Unlessotherwise specified, the issues of documents not listed in the DoDISS are the issues of thedocuments cited in the solicitation (see 6.2).AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)ASTM-D542 - Index of Refraction of Transpa
11、rent Organic Plastics, StandardTest Method for (DoD adopted)ASTM-D570 - Water Absorption of Plastics, Standard Test Method for(DoD adopted)ASTM-D635 - Rate of Burning and/or Extent and Time of Burning ofSelf -Supporting Plastics in a Horizontal Position, StandardTest Method for (DoD adopted)Provided
12、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8184F3ASTM-D638 - Tensile Properties of Plastics, Standard Test Method for(DoD adopted)ASTM-D648 - Deflection Temperature of Plastics Under Flexural Load,Standard Test Method for (DoD adopted)ASTM-D696
13、- Coefficient of Linear Thermal Expansion of Plasti csBetween 30 Degrees C and 30 Degrees C, Standard TestMethod for (DoD adopted)ASTM-D792 - Density and Specific Gravity (Relative Density) of Plastics byDisplacement, Standard Test Methods for (DoD adopted)ASTM-D1003 - Haze and Luminous Transmitt an
14、ce of Transparent Plastics,Standard Test Method for (DoD adopted)ASTM-D1718 - Isobutyl Acetate (95% Grade), Standard Specification for(DoD adopted)ASTM-E831 - Linear Thermal Expansion of Solid Materials byThermomechanical Analysis, Standard Test Method forASTM-F733 - Optical Distortion and Deviation
15、 of Transparent Parts Usingthe Double-Exposure Method, Standard Practice for (DoDadopted)ASTM-G26 - Operating Light -Exposure Apparatus (Xenon -Arc Type) Withand Without Water for Exposure of Nonmetallic Materials,Standard Practice for (DoD adopted)(Application for copies should be addressed to the
16、American Society for Testing andMaterials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.)2.4 Order of precedence . In the event of a conflict between the text of this document andthe references cited herein, the text of this document takes precedence. Nothing in this document,however, sup
17、ersedes applicable laws and regulations unless a specific exemption has beenobtained.3. REQUIREMENTS3.1 Qualification . The plastic sheet furnished under this specification shall be a product thatis authorized by the qualifying activity for listing on the applicable qualified products list beforecon
18、tract award (see 4.2 and 6.3).3.2 Materials . The plastic sheet shall be an acrylic plastic that is transparent and meets allthe requirements of this specification.3.2.1 Color . Unless otherwise specified (see 6.2), the plastic sheet shall be colorless.Provided by IHSNot for ResaleNo reproduction or
19、 networking permitted without license from IHS-,-,-MIL-PRF-8184F43.2.2 Dimensions . Dimensions of the plastic sheet shall be as specified by applicabledrawings. Unless otherwise specified (see 6.2), the tolerance on length and width dimensionsshall be 0.063 inch (1.6 mm).3.2.3 Thickness . The actual
20、 thickness of the plastic sheet at any point shall be within thetolerances specified in table I. Thickness variations of sheets not included in table I shall be notgreater than the tolerance for the next larger thickness.3.3 Performance characteristics . The plastic sheet shall meet the requirements
21、 of table IIwhen tested in accordance with table IV.3.4 Formability . Formability shall be determined as specified in 4.5.4. The plastic sheet shallbe formed into a hemispheric shape with an outside diameter of 10 0.1 inches (25 0.2 cm) and adraw of not less than 4.5 inches (11.5 cm).3.5 Resistance
22、to weathering . After exposure to accelerated weathering as specified in4.5.11, the plastic sheet shall show no evidence of cracking, crazing, or other surface irregularitiesthat affect visibility.3.6 Optical uniformity .3.6.1 Optical defects . The plastic sheet shall contain no optical defects, suc
23、h as embeddedparticles, bubbles, scratches, or imperfections, that reduce visibility through the sheet and cause avariation in angular deviation of more than 5 minutes within a distance of not more than 20 inches(50 cm) on a grid board when tested as specified in 4.5.13.1. Blemishes that do not indi
24、viduallyreduce visibility through the sheet shall be disregarded unless they form a cluster. Optical defectswithin 1 inch (25.4 mm) from the edge of the sheet shall also be disregarded.3.6.2 Angular deviation . The plastic sheet shall contain no surface irregularities which causeangular deviations o
25、n either side of the undeviated position that are greater than the limitsspecified in table III when tested as specified in 4.5.13.2.3.7 Craze resistance . Craze resistance shall be determined as specified in 4.5.15. Stress tocraze results shall be not less than the values specified below:Isopropyl
26、Alcohol Toluene/Isobutyl AcetateDry Wet Dry WetClass 1, psi 2500 1500 2000 1500Class 2, psi 2500 2000 2000 1600Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE I. Thickness, tolerances, and requirements varying with thickness .THICKNESS TOLERANC
27、ES, Inch FLEXURAL WARPAGE AFTERNOMINAL Sheet larger than Sheet larger than DEFORMATION WATER ACCELERATEDSHEET 36 by 60 inches 60 by 80 inches TEMPERATURE ABSORPTION, FLAMMABILITY, WEATHERING,THICKNESS, Sheet up to up to up to Minimum Maximum Percent, Inch/Minute, Inch,Inch 36 by 60 inches 60 by 80 i
28、nches 72 by 100 inches F C F C Maximum Maximum Maximum0.060 0.012 0.020 189 87 234 112 1.00 1.60 0.0300.080 0.012 0.020 192 89 237 114 0.80 1.55 0.0200.100 0.012 0.020 196 91 241 116 0.70 1.45 0.0200.125 0.015 0.020 0.030 199 93 244 118 0.65 1.40 0.0150.150 0.017 0.020 0.030 201 94 246 119 0.60 1.37
29、 0.0150.187 0.020 0.023 0.030 205 96 250 121 0.50 1.35 0.0150.220 0.023 0.025 0.030 207 97 252 122 0.45 1.35 0.0150.250 0.025 0.030 0.035 209 98 253 123 0.40 1.35 0.0150.312 0.030 0.035 0.040 211 99 255 124 0.36 1.35 0.0150.375 0.035 0.040 0.045 212 100 257 125 0.30 1.30 0.0150.417 0.040 0.045 0.045
30、 212 100 257 125 0.28 1.30 0.0150.500 0.040 0.045 0.050 214 101 259 126 0.25 1.30 0.0150.625 0.050 0.050 0.055 214 101 259 126 0.23 1.20 0.0150.750 0.050 0.050 0.060 214 101 259 126 0.20 1.10 0.0150.875 0.050 0.050 0.070 214 101 259 126 0.20 1.10 0.0151.000 0.050 0.050 0.075 216 102 261 127 0.20 1.0
31、0 0.0151.250 0.063 0.063 0.095 216 102 261 127 0.20 1.00 0.0151.500 0.075 0.075 0.112 216 102 261 127 0.20 1.00 0.0151.750 0.088 0.088 0.131 216 102 261 127 0.20 1.00 0.0152.000 0.100 0.100 0.150 216 102 261 127 0.20 1.00 0.0152.250 0.113 0.113 0.168 216 102 261 127 0.20 1.00 0.0152.500 0.117 0.117
32、0.175 216 102 261 127 0.20 1.00 0.0103.000 0.120 0.120 0.190 216 102 261 127 0.20 1.00 0.0103.500 0.140 0.140 0.210 216 102 261 127 0.20 1.00 0.0104.000 0.160 0.160 0.225 216 102 261 127 0.20 1.00 0.010MIL-PRF-8184F5Provided by IHSNot for ResaleNo reproduction or networking permitted without license
33、 from IHS-,-,-MIL-PRF-8184F6TABLE II. Performance characteristics .CHARACTERISTIC REQUIREMENTSpecific gravity 1.19 0.01Water absorption See table ILong term water absorption (class 2), percent, maximum 2.90Flammability See table ICoefficient of thermal expansion per F ( C), maximum 0.000055 (0.00010
34、)Internal strain (dimensional change), percent, maximum 1Flexural deformation temperature See table ITensile strength, psi (MPa), minimum 9000 (62.1)Elongation, percent, minimum 2Ultraviolet transmittance (290 to 330 m range), percent,maximum2Index of refraction 1 / 1.49 0.01Luminous transmittance,
35、percent, minimum 1 /Thickness, inch:0.060 through 0.187As receivedAfter accelerated weatheringOver 0.187 through 0.312As receivedAfter accelerated weatheringOver 0.312 through 0.417As receivedAfter accelerated weatheringOver 0.417 through 1.250As receivedAfter accelerated weatheringOver 1.250 throug
36、h 2.250As receivedAfter accelerated weatheringOver 2.250 through 3.000As receivedAfter accelerated weatheringOver 3.000 through 4.000As receivedAfter accelerated weathering9190908989878886888585828080Haze, percent, maximum 1 /As receivedAfter accelerated weathering34Warpage after accelerated weather
37、ing See table IThermal stability No evidence of blistering, crazing,or other thermal instability1 / Requirement is for colorless plastic sheet.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8184F7TABLE III. Angular deviation .SHEET THICKNESS
38、 LIMITS OF PERMISSIBLE DEVIATION 1 /0.060 inch through 0.220 inch 7 minutes at any location more than 1 inch fromthe edge of the sheet.Over 0.220 inch through 0.250 inch 7 minutes at any location more than 3 inchesfrom the edge of the sheet and 9 minutesbetween 3 inches and 1 inch of the edge.Over 0
39、.250 inch through 0.375 inch 7 minutes at any location more than 3 inchesfrom the edge of the sheet and 12 minutesbetween 3 inches and 1 inch of the edge.Over 0.375 inch through 0.500 inch 7 minutes at any location more than 3 inchesfrom the edge of the sheet and 14 minutesbetween 3 inches and 1 inc
40、h of the edge.Over 0.500 inch through 1.000 inch 12 minutes at any location more than 3 inchesfrom the edge of the sheet and 20 minutesbetween 3 inches and 1 inch of the edge.Over 1.000 inch through 2.500 inches 20 minutes at any location more than 3 inchesfrom the edge of the sheet and 25 minutesbe
41、tween 3 inches and 1 inch of the edge.Over 2.500 inches through 4.000 inches 30 minutes at any location more than 3 inchesfrom the edge of the sheet and 35 minutesbetween 3 inches and 1 inch of the edge.1 / Surface irregularities within 1 inch from the edge of the sheet shall be disregarded.3.8 Inst
42、ruction sheet . An instruction sheet containing information relating to the necessaryprecautions to be observed in the use, forming, cementing, handling, and storage of the plasticsheet shall be included in each shipping container.3.9 Protective covering . A protective covering shall be applied to b
43、oth sides of the plasticsheet to protect the surfaces from scratches and abrasions. The covering shall be easily removedwithout injury or damage to the surface. The plastic sheet shall be identified on the protectivecovering by specification number, type, class, thickness, manufacturers code, and na
44、tional stocknumber.4. VERIFICATION4.1 Classification of inspections . The inspection requirements specified herein are classifiedas follows:a. Qualification inspection (see 4.2).b. Conformance inspection (see 4.3).Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
45、rom IHS-,-,-MIL-PRF-8184F84.2 Qualification inspection . Qualification inspection shall consist of all the tests specified intable IV.TABLE IV. Qualification inspection .REQUIREMENT TEST METHODCHARACTERISTIC PARAGRAPH OR PARAGRAPHThickness 3.2.3 4.5.1Specific gravity Table II ASTM-D792Water absorpti
46、on Table I ASTM-D570 1 /Long term water absorption Table II 4.5.2Flammability Table I ASTM-D635Coefficient of thermal expansion Table II 4.5.3Formability 3.4 4.5.4Internal strain Table II 4.5.5Flexural deformation temperature Table I 4.5.6Tensile strength Table II 4.5.7.1Elongation Table II 4.5.7.2U
47、ltraviolet transmittance Table II 4.5.8Index of refraction Table II 4.5.9Luminous transmittance Table II 4.5.10Haze Table II 4.5.10Resistance to weathering 3.5 4.5.11Warpage after accelerated weathering Table I 4.5.12Optical uniformity 3.6 4.5.13Thermal stability Table II 4.5.14Craze resistance 3.7
48、4.5.15Instruction sheet 3.8 VisualProtective covering 3.9 Visual1 / Test specimens shall be conditioned at a temperature of 221 to 230 F (105 to 110 C)for 1 hour, then immersed in water at room temperature for 24 hours prior to testing.4.2.1 Qualification test sample . The qualification test sample
49、shall consist of not less than10 square feet (1 square meter) of plastic sheet for each thickness. Individual sheet dimensionsshall be not less than 12 by 18 inches (30 by 45 cm). To be qualified for all thicknesses,manufacturers shall submit samples of plastic sheet with nominal thicknesses of 0.060 inch(1.5 mm), 0.250 inch (6.4 mm), 0.500 inch
