DLA L-P-390C-1971 PLASTIC MOLDING AND EXTRUSION MATERIAL POLYETHYLENE AND COPOLYMERS (LOW MEDIUM AND HIGH DENSITY) [Refer To ASTM D4976 REV A ASTM D4976 ASTM D4976 ASTM D4976 REV A.pdf

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1、FEDERAL SPECIFICATION PLASTIC, MOLDING AND EXTRUSION MATERIAL, POLYETHYLENE AND COPOLYMERS (LOW, MEDIUM, AND HIGH DENSITY) This specification was approved by the Commissioner, Federal Supply Service, Generai Services Administration, for the use of all Federal agencies. 1. SCOPE AND CLASSIFICATION 1.

2、 1 Scope. This specification covers low, medium, and high density polyethylene and copolymers molding and extrusion material for general purpose use, for use as dielectric material, and for weather-resistant applications (see 6. i). For the purpose oi this tJPec1flcation, the term polyethy lene is u

3、sed hen referring to any of the types, classes, grades, and categories. 1.1.1 Coverage. This specification does not cover all the types, classes, grades, and categories of polyethylene, but only those that are most generally used by the Federal Government. 1. 2 Classification. 1. 2. i Types, ciasses

4、, grades, and categories (see table nil. Polyethylene shaH be of the types, classes, grades, and categories shown in tables I and U, as specified (see 6.2). TABLE I. Types, classes, and grades Type Application Class ! Grade Color 1 “1 Land M 2 I General 1 Natural and colors, including black purpose

5、2 (see 6. 1. 1) H 3 5 -4 I J 1 Natural L 2 Colors, including black 3 Natural 4 ColorsJ including black II Dielectric 1 Natural (see 6. 1. 2) M 2 Colors, lncludlnl black 1 2 H 3 Natural and colors, including black 4 _ J 1 Black (carbon O. 5 O. 1 percent by weight) L 2 3 Black (carboa 2.50 0.5 percent

6、 by weight) Weather 4 m resistant 1 Black (carbon. 0.5 O. 1 percent by weight) (see 6. 1.3) M 2 3 ) Black (carbon i. 50 0.5 percent by weight) H 1 2 1/ L;:; low density; M : medium density; and H = high density. FSC 9330 Provided by IHSNot for ResaleNo reproduction or networking permitted without li

7、cense from IHS-,-,-L-P-39OC Category 1 2 3 4 5 1/ See 3.2.1. 2. APPLICABLE DOCUMENTS TABLE U“ Categories ieit - index i I (nominal flow rate; grans/10 minutes 25 10 to 25, inclusive 1. 0 to ! C, inclusive 0.4 to 1.0, inclusive O. 4 maxim um 2.1 The following documents, of the l;,sue in effect on dat

8、e of invitation for bids or request for proposa!l form a pari of the specificatiull tl) tli( extt:nt specified herein. Federal Standards: Fed. Std. 10. 123 - Marking tor toMlltlc Sb1Dt (Civil A8enc:lel). Fed. Teat !Vle1od Std. No. 406 - Plastics: Methods of TestL1g, Fed. Test Metlod Std. No. 601 - H

9、ubber: Sampling and Testing. (Activities outside the Federal Government may obtain copies of Federal Specifications, ;:)l.andardb, and Handbooks as outlined tmder General Information in the Index of Specifications and Standards and at the prices indicated in the Index. The Index, which includes cwnu

10、lative monthly supplements as issued, is for sale on a subscription basis by t he Superintendent of Documents, U. S. Government Printing Office, Washington, DC 20402. (Single copies of this specification and other product specifications required by activities outside the Federal Government for biddi

11、ng purposes are available without charge from Business Service Centers at the General Services Administration Regional Oiiices in Boslon, New York, WashingLon, DC, Atlanta, Chicago, Kansas City, MO, Fort Worth, Denver, San Francisco, Los Angeles, and Seattle! WA. (Federal Government activities may o

12、btain copies of Federal Specifications, Standards,and Handbooks and the Irtdex of Specifictions and Standrcts forn (trtblishcd distribution points :vlilitary Specifications: iVllL-T -116 - Preservation, Methods of. :x: L-C -45662 - C alibratiQn System Requirements. Military Standards: MIL-STD-12 9 -

13、 Marking for Shipment and Storage. MIL-STD-147 - Pilletized and Containerized Unit Loads 40“ x 481 Pallets, Skids, Runners. or Pallet-Type Base. (Copies of iviilitary Specifications and Standards required by C011tractors in con.J1ection I/ith specific rrocurement functions sh)uld be ohtained from th

14、e procuring activity or as directed by the contracting officer. ) 2.2 Other publications. The following documents, form a part nf this specification to the lALent specified hereL1, Unless a specific issue is identified; the issue lJl effect on date of invitation for bids or request for prorosa1 shal

15、l apply, -.#“ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L-P-390C Rural Electrification Administration (R EA) Publication: PE-200 - Polyethylene Raw Material. (Application for copies should be addressed to the United States Department of Agricul

16、ture, Rural Electrification Administration, Wash1ncton, DC 20402.) American Society for Testing and Materials (ASTM) Standard.: D 746 - Method of Test for Brittleness Temperature of Plastics and Elastomers by Impact. D 1238 - Method of Measuring Flow Rates of ThermopluUcs by Extrusion Plastometer. D

17、 1505 - Method of Test for Density of Plastics by the Density-Gradient Technique. o 1531 - Method of Test for Dielectric Constant and DissipaUon Factor of Polyethylene by Liquid Displacement Procedure. o 1603 - Method of Test for Carbon Black in Ethylene Plastics. D 1693 - Method of Test for Environ

18、mental Stress-Cracking of Type I Ethylene Plastics. o 1928 - Method for Preparation of Compression - Molded Polyethylene Test Samples. E 60 - Recommended Practice for Photometric Methods for Chemical Analysis of Metals. (Application for copis should be addressed to the American SocietyforTesUng and

19、Materials, 1916 Race Street, Phladelphia, PA 19103.) 3. REQUIREMENTS 3. 1 Material. The material shall be virgin polyethylene or a copolymer of at least 90 percent ethylene and other olefin monomers, containing a lubricant if necessary, and formulated to meet the requirements of this specification.

20、The material shall be suitable for molding or extrusion. 3. 1. 1 Color. Colors, as applicable (see table I), shall be as specified (see 6.2). Standards for color shall be in accordance with the color notations of REA Publication PE-200. 3. 1.2 Transparency. Polyethylene shall tJ either translucent o

21、r opaque, as specified (see 6.2). 3.1.3 Form. Polyethylene shall be in the form of powder, granules, or pellets, as specified (see 6.2).-3.1.4 Contamination. When examined as specified in 4.6.3.1, polyethylene shall be free from contamination (dirt, foreign matter, and burnt, streaked, or off-color

22、pellet). 3.1.5 Carbon-black. In accordance with suitable commercial milling procedures as recommended by the supplier, type TIl polyethylene shall contain uniformly well dispersed channel or furnace carbon-black. 3. 1. 5.1 Particle size. When tested as specified in 4.6.3.2, the average particle size

23、 shall be 20 nanometers (nm) or less. 3. 1. 5.2 Concentration. When tested as specified In 4.6.3.3, the concentratIon shall be 0.5 O. 1 percent by weight for classs Land M, grade 1 and 2.50 to. 5 percent by weight for class L; 2, 3, and 4; class M, grades 2 and 3; and class H, grades 1 and 2 (see 6.

24、1. 3 and 6.3). arad D-3. 1. 5. 3 Absorption coefficient. When tested as specified 1n 4.6.3.4, the absorption coefficient shall be not less than 3200. 3. 1. 6 Antioxidant. Types II and In polyethylene shall contain an antioxidant for milling stability (see 3.2.2 and 6.4). 3.2 Prope_yalues. Unless oth

25、erwise specified (see table OI (brittleness), the values obtained from each set of specimens for any property shall be averaged (see 4.6.2. 3), and the results obtained shall meet the requirements speCified in table llI. 3 - - - - Provided by IHSNot for ResaleNo reproduction or networking permitted

26、without license from IHS-,-,-I b I I l I I I , I , I f , ) ) . 5 i ) , 11 l “ “ TABLE m. Property values t-“-.- Value required Property Class Type I Type n Type m I-_ -.-_-.-:G:.-rclde Grade Grade 1 2 35 1 E 3 14 5 1 2 3( 4 D?nsity, annealed, range, L 0.910 to 0.9? _- - - - - I O. 910 to 0.925 - I 0

27、.910 to 0.925 mcl, D23C, g/ml .!/ M 0.926toO.940 -,-1. - :- ;0.9261,00.940 I - I - - 0.926 to 0.940 -_ -+-=-H=-+-._O._l!,941 to Q. 985 i 941 to 0 9R ,0.941 toO.985 - -TensIle strength, L 1,200 1 400 -:-:-+-=-=-=-L_:- 11, 4oo)0 1 400 1,400 - 1 400 1,400 1,400 1 400 mlnimum Ib /in2 M 1 600 1 800 - - -

28、 1, BOO:)Q - - - 1,800 1,800 1,800 -, f H 2,800 2,800 3,500 3,500 4 000 2,Boo 2,800 13 OO 3,500 4,00( 2 800 3 SOlO - -UltimatE elongation, L 400 400 - - - 400 4010 I 400 400 - 400 400 400 -(OO mmimum, percent M 400 400 - - - 400 400 I - I -:- - 400 400 400 -H - - - - 400 400 400 400 400 400 - -Bittl

29、enles tamperature L -50 -55 - -. -55 -60 -55 - -50 -50 -so -50 C, maxImum M -50 -55 - - - -60 -55 - - - -50 -5lJ -50 -H -55 - -55 - - -55 - -55 - - -55 -55 - - -Dielectric consta.,t, L -.-I-,.=-=-=-f- _ + - 2.35 2.5 2.35 2.35 - 2.50 2.75 2.75 2.80 maximum, 1 MHz M - - -._- - - 2.35 2.15 - - - 2.50 2

30、.75 2.80 -_ f-_H - - -._- - - 2.38 2.:J8 2.38 2.38 2.38 2.75 2.75 - - = Dissipaltion factor, L - - - - - 0.0005 0.01005 0.0005 0.0005 - 0.003 0.007 0.007 0.01 maximum, 1 MHz M - - - - - 0.0005 0.0005 - - - 0.003 0.007 0.01 - -H - - - 1 - - 0.OO()5 O.OOO,-005, 0.0005 0.0005, 0.005 0.007 - -1/ Uncolor

31、ed, unfilled, specimens shall be used. l?1 t“f I I to.) t.:) R Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L-P-390C 3.2.1 Melt-index. The melt-index (nominal flow rate) shaH be within the ranges given for the speciiic category (see tabie Ii) for

32、the type, ciass, ;tna grade specified; ana shall be as agreed to between the manufacturer and the purchaser (see 6.2). Melt-index values below 1.0 shall have 30 percent tolerance and 20 percent for values of 1.0 or greater. The values for each sample batch shall be recorded (see 6.5). 3.2.2 Mining s

33、tability. When specimens are prepared as specified in 4.6.3.10; these specimens shall meet the dielectric constant and dissipation factor requirements (see table m). 3.2.3 Crack resistance. 3.2.3.1 Crack failure (class L only). When tested as specified in 4.6. 3.1l.1, crack failure shall be as defin

34、ed in ASTM method D 1693. 3.2.3.2 Crack failure (class H onl . When tested as specified in 4.6. 3. 11. 2, there shall be no cracks visible to the unaided eye. For natural-color polyethylene specimens, flaws gene lly first appear as small white dots that are characteristic of a discontinuity in the r

35、efractive index .1. d act llKe small scauenng centers. The white area enlarges with time as the temperature is held constant and a crack appears within this region. The crack is always transverse to the direction of the applied stress and propagated in the same direction. ) 4. QUALiTY ASSURANCE PROV

36、ISIONS 4. 1 Responsibility for inspection. Unless otherwise specified in the contract or purchase ordt the supplier is responsible for the performance of all lnspection requirements as specified herein. Except as otherwise specified, the supplier may use his own facilities or 3.1y commercial laborat

37、ory acceptable to the Government. The Goverrunent reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that suplh ., and services conform to prescribed requirements. 4.1.1 Test eqUipment and inspection facilities. T

38、est equipment and inspection facilities shall be of sufficient accuracy t quality J and quantity LO permit performance of the required inspection. The supplier shall establish calibration of inspection equipment to the satisfaction of the Government. Caiibration of the standards that control the acc

39、uracy of the inspection equipment shall comply with the requirements of MIL-C-45662. 4.2 Classification of examinations and tests. The examination and testing of polyethylene shall be ciassiiied as foiiows: (a) Materials inspection (see 4. 3). (b) Q.!ality conformance inspection (see 4.5). 4.3 Mater

40、ials inspection. Materials inspection shall consist of certification supported by veri fying data that the items listed in table rv are in accordance with the applicable referenced specifi cations or requirements. TABLE IV. Materials inspection Material Percent content of ethylene and other olefin m

41、Onomers Color of materia! Requirement paragraph 3.1 3.1.1 . _ I! _ L.1 _ IPP U:i class L grades 3 and 4. Types I and n, class H, grades 1 and 3. Type nI, class H, grades 1 and 2. Type I, class L, grades 1 and 2 Types II and ill, class L, grades 1 through 4. Types I and II, class M, grades 1 and 2. T

42、ypes ill, class M, grades 1 through 3. T._ Y _ ,.I“ . 1, _ U , n,l t . lI rr“ I:. .lIVC“ .l G.J1.l Li, 1a.0303 I, 5O .10 I.III.VUf!oIl “. Type ill, class H, grades 1 and 2. Requlreillent paragraph 3.1. 4 (See table m) I (See table lll) I 3.2.3 3.2.1 Method patagraph 4.6.3.1 4.6.3.7 4.S.3.B 4.6.3. 11

43、 4.6.3.9 4.5.1. 2.1 Saaiifling flan. Batch sampling (see 4.6.1) and inection shall be made on each batch (see 4.5. 1. 1), shal be the basis for acceptance or rejection of the batch. 4. 5. 1. 3 Periodic-b3tch inspection. Periodic-batch inspection shali consist of the examination and .n . “ “,.ili:n:i

44、 . 1 1 “CO “nHr hln co.“ “PC-U.lCU Ul “.U.lC Y I., a.;:, a.PYU4UU:. 4.5. 1. 3.1mpling_l: -lUf! f : :.6.1). “ I I P1.TP I Ll Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L-P-39OC 4.5.1. 3. 2 Noncompliance. U a batch fails to pass periodic-batch ins

45、pection, the supplier shall take corrective action on the materials or process, or both, as warranted, and on all batches which can be corrected and which were manufactured under essentia!y the same cond!UOI18; with essen tially the same matE-rials, processes, etc., and which are considered subject

46、to the same failure. Acceptance of the product shall be discontinued until corrective action, acceptable to the Government, has been taken. After the corrective action has been taken, periodic-batch inspection shall be repeated. Batch inspection may be reinstituted; however, final acceptance shall b

47、e withheld until the periodic-batch reinspection has shown that the corrective action was successful. In the event of failure after reinspection, information concerning the failure and the corrective action taken shall be furnished to the cognizant inspection activity and the qualifying activit y. 4. 5. 1. 3. 3 Rejection. Failure to comply with any of the requirements of this specification shall be cause for rejection of the batch represented. Examination or test TABLE VI. Periodic -batch inspection Requirement Method Applicability paragraph paragraph -:-:.-+-=-.;:.-:-+-;. Carbon -black