ARMY L-P-380 C-1973 PLASTIC MOLDING MATERIAL METHACRYLATE《甲基丙烯酸酯的塑料成型原料》.pdf

1、L-P-3OC 93 = 7797774 0070b7 b W 57-05 L-P-380C August 24, 1973 SUPERSEDING Fed. Spec L-P-38B January 5, 1968 FEDE? documents, of the issues in effect on the date of invitation for bids or rccjucst for proposal, form a part of this s2ccification to the extcnt specified herein. Yedcral Specifications:

2、 PPP-D-723 - Crums, Fiber. PPP-D-729 - Drums, S!iipping arc? Storac;c, Steel, 55-ailon. Federal Staridarc?: Fed. Std. No. 123 - Karking for Dorwst.Fc Shii:ner.t (Civil Agrr.ciec). Fea. StC. ?io. 595 - Color. (Activities outside the Federal Government nay ohtai? copies of Federal Specifica- tions, St

3、andards, and IIandi;oo!;s as eutlincd under General Information in the Index of Federal Specifications and Standards ancl at thc ?rices indicate6 in the Index. The Iccx, which includes cumulative mnnthly sup;ll.eer.ts as issuecl, is for salo on a SUS- scription basis hy the Superintendent of Docuoen

4、ta, i!. S. Govcrriment Printin5 Office, Washington, DC 20402. (Single copies of this specification and ot?wr Fderal sp=ci.ficetions required by activities outside the Federal Government for bidding piiroses are availahle without charge from Business Service Cezters at the General Services Administra

5、tiori Regional Offices in Boston, Rei.: York, Washington, DC, Alanta, ChicPqe, Kansas City, KO, Fort Worth, Denver, San Francisco, Los Angeles, an6 Seattl., WP (Federal Government activities may obtain coCies of Federal Specifications, Stan6- aras, and Handbooks and the Index of Federal Specificatio

6、ns and Standards fron? established distriliution points in their agencies). FSC 9330 /7. THIS DOCUMENT CONTAINS 3 PAGES. I I Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- L-P-3OC 73 W 7777774 0007Ob 8 W L-P-380C Military Standards: MIL-STD-105 - S

7、ampling Procedures and Tables for Inspection by Attributes. MIL-STD-129 - Marking for Shipment and Storage. (Copies of Military Specifications and Standards required by suppliers in con- nection with specific procurement functions should be obtained from the procuring activity or as directed by the

8、contracting officer.) 2.2 Other publications. The following documents fonn a part of this specification to the extent specified herein. Unless a specific issue is identified, the issue in effect on date of invitation for bids or request for proposal shall apply. American Society for Testing and Mate

9、rials (ASTM) Standards: D 149-64 (1970) - D 150-70 - D 257-66 (1972) - D 542-50 (1970) - D 570-63 (1972) - D 618-61 (1971) - D 638-72 - D 648-72 - D 792-66 (1970) - D 1003-61 (1970)- G 21-70 - Dielectric Breakdown Voltage and Dielectric Strength of Electrical Insulating Materials at Commercial Power

10、 Frequencies. A-C Loss Characteristics and Dielectric Constant (Permittivity) of Solid Electrical Insulating Materials. D-C Resistance or Conductance of Insulating Materials. Index of Refraction of Transparent Organic Plastics. Water Absorption of Plastics. Conditioning Plastics and Electrical Insul

11、ating Materials for Tensile Properties of Plastics. Deflection Temperature of Plastics Under Flexural Load. Specific Gravity and Density of Plastics by Displacement. Haze and Luminous Transmittance a Transparent Plastics. Resistance of Synthetic Polymeric Materials to Fungi. Testing. (Application fo

12、r copies should be addressed to the American Society for Testing and National Motor Freight Traffic Association, Inc., Agent: National Motor Freight Classification. (Applicatin for copies should be addressed to the American Trucking Associations, Uniform Classification Committee, Agent: Uniform Frei

13、ght Classification. (Application for copies should be addressed to the Uniform Classification Committee, (Technical society and technical association specifications and standards are Materials, 1916 Race Street, Philadelphia, PA 19103.) Inc., Tariff Order Section, 1616 P Street, N. W., Washington, D

14、C 20036.) Room 1106, 222 South Riverside Plaza, Chicago, IL 60606. generally available for reference from libraries. technical groups and using Federal agencies.) They are also distributed among 3. REQUI-NTS 3.1 .Material. The methacrylate material shall consist of virgin compression, injection or e

15、xtrusion molding compounds to which no scrap or reworked material has been added. of acrylic monomers containing at least 80 percent methyl methacrylate. shall not be considered reworking. The methacrylate material shall consist or resins nade by polymerization Pelletizing 3.2 Property values. When

16、tested as specified in the applicable procedure of 4.3, type I material shall conform to the property values specified in tables I and II. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L-P-3OC 73 797977q 0007067 T W L-P-380C TABLE I. Property val

17、ues, excluding electrical properties Property values for types I and II Property Class 1 Class 2 Class 3 Specific gravity 23O/23“C. (73.4“/73.4“F.): Maximum 1.19 1.19 Minimum 1.18 1.18 Maximum 1.50 1.50 Minimum 1.48 1.48 Index of refraction 2/ (ND 23OC.I Total luminous transmittance, 2/ Water absorp

18、tion, 24 hour immersion, 1/8 inch thickness, percent, minimum 90 90 percent, maximum: Weight gain plus soluble matter loss 0.5 0.5 Soluble matter loss 0.1 0.1 Defection temperature under load i/, at 264 pounds per square inch stress 1/8 inch thick annealed specimen: “C. (OF.) minimum 67 “C. (“F.) ma

19、ximum 75 OC. (OF.) minimum 69 “C. (“F.) maximum 79 1/4 inch thick annealed specimen: Tensile strenght, pounds per cq. inch, minimum 8000 153) 76 (169) 167) 84 (183) 156) 80 (176) 174) 86 (187) 8000 1.19 1.18 1.50 1.48 90 0.5 0.1 9000 - 1/ - 2/ 3J Either thickness may be used for determining this pro

20、perty. Applicable only to colorless and to those transparent colors which transmit at the sodium D line. Otherwise, a correction must be made. Applicable to colorless material only. material. Correction must be made for colored TABLE II. Electrical property values (for type II only) Property value f

21、or type II, Property all classes Insulation resistance, megohms, minimum Dielectric strength, flatwise, step-by-step, Dielectric constant, maximum: Dissipation factor, maximum: volts per mil., minimum At 60 HzlJ 1 KHZ . At 60 FIZoncnts. In accordance with 4.1, the supplier is responsible for insurin

22、 that natericls and components uscd were manu- factured, tested, and inspectec? in accorancc with the remirevnts of referenced subsidiary specifications- and standaros to the oxtcnt r;recifi-d. conflict , this specification shall govcrri. A supl irrs certificate of com;iliancc with 3.1 and 3.5 shall

23、 be furnishec7,: In the event of 4.2.2 Inspection of material. 4.2.2.1 Examination of the rLateria1. Excmination of tbe Fatcrial shall Sa made in accordance with the list of defects, irispcction Icvcls an? accc;:tahle ciuality lcvcls (AQL) set forth below. Thc lot siz?, for Furizosti of c%terr?ifiin

24、G the sample size in accordance with EIIL-STD-105, shall be ex;rccsid in upits of 300 pounds for exmination in 4.2.2.1.1, anfi in units of shiy;Jing ccntainnrs for examination in -4.2.2.1.2. 0.2.2.1.1 Examination of the matcrial fer dcfccts in appearance and w0rkmanshi.p. The sample Enit for this ex

25、amication, specifi?. ir, takle III, shall be approximately one pound. TAELE III. Exmication of the matcricl for dcfccts in apFearance and wYor!mai:siiip E: am i ne Dcfectz hp2earance and workmanship t?ot colorlcss , un3 css othervise specif ieA . Color not as specifie? when color required. Por= or c

26、olor not uniform. Forn not as specified. Not clean, presence of foreign material or other contapination. 4.2.2.1.2 Inspection of prcparation for deliver;. requirements. An inspection shall be made to determine whether the packing and niarking comply wit!i the re- quirements in section 5. Defects sha

27、ll be scored. in acccrdanco with table IV. The sample unit for this inspection shall be one shippin5 container fully prepared for shipment. When specified by the procuring agency, the shipping container shall be selected just prior to the closing operation. Sampling and inspection shall be in accord

28、ance with 4.2.2.1.3. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L-P-3C 73 m 777777q 0007071 B m .Cj .- 0 o- L-P-PC . _ . TABLE IV. Examination of prcparaticr fer .7s,-c. .! , I L Jot level spec! f?.d-; not in acccrdance with contract. my nonco

29、rforr.ing component , component I_. -. ,. ._- xissing, damage8 or otherwise defective Liner ir, fibcr erums not properly sealed. affecting cervice per 100 units shall be as follows: Examination Inspection paragraph levo1 AQL 4.2.2.1.1 . 4.2.2.1.2 II . s22 . - 2.5 2.5 4.2.3 Testing. The material shal

30、l be tested for the characteristics listed in tables I and II, as applicable, in accordance with the test methods specified here- in. The lot size, for the purpose of detcmininq.the sample size for testing shall be expressed in units of 300 Pounds. The sample unit shall consist of sufficient materia

31、l to 2repare all required specimens. Tho ins,iect%on level shall ha S-1 with an acceptance number of O defects. The results for each test shall bc the averaged results of the specimens. 4.3 Test methods. 4.3.1 Specimen preparation and conditioning. ,Spcinens shall be prepares by 4.3.1.1 -Specimen an

32、nealins.: Speci ta room tompra- ture. The specimens shall remain ir, the containnr until- -r?dy. tc test. (Annealin5 is ;tiona1 fcr specimens to be usei! fcr cthcr -tr?sts.) . injection moldins under conditicns spccif iei! k; thc nnr.nfactiirer. -. . . i -. :,.: - - . . . .- I ., , TABLE V. Annealin

33、g temperaturco . Pamaling tcqcratures Class Y (OC.) (Or.) EQ + 3 14i.t 5.4 71 5 3 160 T 5.1 82 5 3 iuc. 5 5.4 I/ XjpliCable to types I ar.6 II. _. 8;3.l?!2 Specimen GonditionicG; Specimens for all tcsts other thar, those specifiee in 4.3.1.1, shall be conditioned in iccorflancc with procedur2 P. of

34、ASTP! D 618-61 (1971) and the ninimum conditioing tim s%ll be 24 hows. . 5 . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-L-P-3 8 OC 4.3.2 Testing conditions. Unless otherwise specified by the applicable test method, all tests shall be performed a

35、t 23 t 2OC. (73.4 5 3.6OF.) and 50 f 5 per- cent relative humidity. 4.3.3 Specific gravity. One specimen shall be tested in accordance with method A-1 or A-2 of ASTM D 792-66 (1970). 4.3.4 Index of refraction. One specimen shall be tested in accordance with ASTM D 542-50 (1970). 4.3.5 Total luminous

36、 transmittance. One specimen, 1/8 + 1/100 inch thick, shall be tested in accordance with procedure A of ASTM D 1003-61 71970). 4.3.6 Water absorption. One specimen shall be tested in accordance with ASTM D 570-63 (1972). 4.3.7 Deflection temperature under load. Three specimens, each either 1/ 1/8 1/

37、100 inch, or 1/4 f 1/100 inch thick, shall be tested in accordance with ASTM D 648-72. 4.3.8 Tensile strength. Five specimens, each 1/8 2 1/100 inch thick shall be tested in accordance with ASTM D 638-72, using testing speed B. Dimensions of each specimen shall conform to type I of figure 1 of ASTM

38、D 638-72. 4.3.9 Insulation resistance (for type II material only). Three specimens shall be tested in accordance with ASTM D 257-66 (1972) using the electrodes specified in figure 3 of this test method. 4.3.10 Dielectric strength (for type II material on1 ). Three specimens shall be tested in accord

39、ance with ASTM D 149-64, usins electr5des as specified in table I of this test method, and the short time test. conforms to the specified in ASTM D 149-64 (1970). Three specimens shall be tested in accordance with ASTM D 150-70, using any electrode system specified in this test method. Tests shall b

40、e mad; under oil which 4.3.11 Dielectric constant and dissipation factor (for type II material only). 4.3.12 Fungus resistance (applicable only when specified by the procuring agency). Three specimens shall be prepared and tested in accordance with ASTM G 21-70. Specimens shall be 2 by 2 inch pieces

41、 as specified in ASTM G 21-70. 5. PREPARATION FOR DELIVERY 5.1 Packing. Packing shall be levels A, B, or C, as specified (see 6.2). 5.1.1 Level A. Unless otherwise specified (see 6.2) the material shall be packed in one of the following types of containers: a. Fiber drums conforming to PPP-D-723, ty

42、pe II, grade A, or type III,. b. Metal drums conforming to PPP-D-729, type III, or type IV, in quantities grade A in quantities of 200 pounds maximum. of 400 pounds maximum. Insofar as practical, drums shall be of uniform shape and size, with minimum cube and tare consistent with the protection requ

43、ired. Drums shall contain identical quantities and shall be closed in accordance with the applicable container specifi- cation. properly heat sealed. packed in one of the following types of containers: Fiber drums shall be furnished with a 0.004 inch thick polyethylene liner 5.1.2 Level B. Unless ot

44、herwise specified (see 6.2) the material shall be a. b. Metal drums conforming to PPP-D-729, type III or type IV, in quantities Fiber drums conforming to PPP-D-723, type I, grade A in quantities of 200 pounds maximum. of 400 pounds maximum. 6 Provided by IHSNot for ResaleNo reproduction or networkin

45、g permitted without license from IHS-,-,-L-P-3OC 73 777777q 0007073 L W L-P-380C Insofar as practical, drums shall be of uniform shape and size, with minimum cube tare consistent with the protection required. Drums shall contain identical quantities and.shal1 be closed in accordance with the applica

46、ble container specifi- cation. Fiber drums shall be furnished wiht a 0.004 inch thick polyethylene liner heat sealed. 5.1.3 Level C. Packing shall be in a manner to insure acceptance and safe delivery at destination at the lowest transportation rate for such supplies. Containers shall be in accordan

47、ce with Uniform Freight Classification Rules or National Motor Freight Classification Rules, as applicable. 5.2 Marking. 5.2.1 Civil agencies. In addition to any special marking specified in the contract or order, shipping containers shall be marked in accordance with Fed. Std. No. 123. 5.2.2 Milita

48、ry agencies. In addition to any special marking specified in the contract or order, containers shall be marked in accordance with MIL-STD-129. 6. NOTES 6.1 Intended use. Methacrylate plastics may be used in applications requiring excellent clarity and transparency, resistance to sunlight and outdoor

49、 weathering, and an optimum comnination of flexibility with shatter resistance and rigidity. Examples are edge lighted cockpit and interior control panels. The classes having higher heat distortion temperatures may be used for applications requiring greater heat resistance. A chief disadvantage of these plastics is a lack of abrasion re- sistance and a tendency to craze.un6er stress, paraticularly when simultaneously exposed to active solv