ARMY MIL-W-13945 D-1977 WAX HYDROCARBON (FOR ORDNANCE USE)《(军火用的)烷属烃》.pdf

1、r Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-W-1394 5D a SPECIFICATION FEDERAL PPP-B-636 - Boxes, Shipping, Fiberboard STANDARDS FEDERAL FED-STD-595 - Colors MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes

2、MIL-STD-129 - Harking for Shipment and Storage (Copies of specifications and standards required by contractors in connection with specific procurement functions should be obtained from the procuring issue in effect on date of invitation for bids or request for proposal shall apply: I c AMERICAN SOCI

3、ETY FOR TESTING AND MATERIALS D 5 Penetration of Bituminous Materials D 88 Saybolt Viscosity B 92 Flash and Fire Points by Cleveland Open Cup D 94 Saponification Number of Petirolewn Products D 127 Drop Melting Point of Petroleum Wax, Including Petrolatum D 664 Neutralization Number by Potentiometri

4、c Titra tion D 721 oil Content of Petroleum Waxes D 974 Neutralization Number by Color-Indicator Titration i9 1748 D 1959 Iodine Value of Drying Oils and Fatty Acids D 2266 Wear Preventive Characteristics of Lubricating Grease Rust Protection by Metal Preservatives in the Humidity Cabinet (Four-Ball

5、 Method) (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103 .) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Provided by IHSNot for ResaleNo reproduction or netw

6、orking permitted without license from IHS-,-,-MIL-W-13795D 71 W 777770b 0100515 1 MIL-W-13945D * 3.3 Physical properties The hydrocarbon waxes shall conform to the physical Fequirements specified in table II, when tested as specified in 4.5, I TABLE II, Physical properties Type I Type II Type III Ty

7、pe IV Type V Min Max Min Max Min Max Min Max Min Max Melting point, OF 183 192 162 172 162 190 192 197 156 163 I I (“0 (84) (89) (72) (78) (72) (88) (89) (82) (69) (73) Viscosity at 210F, 75 100 - - - - 80 95 - - (99C) s .u.s . 8 - _- Needle penetration at 7 16 6 12 - 30 2 77 OF( 25C) Flash point, C

8、leveland 500 - - - - - _- - - - Fire point, Cleveland 575 - - - - - - - -u - - - . . 0.C. F(OC) (260) O,C, F(C) (302) a 3.4 =ox. The color of the hydrocarbon waxes (type I and II) shall be no darker than color No. 30099 of FED-STD-595. 3.5 Coosns_rcton. _(all- type-s) . The three test panels shall p

9、ass the L Corrosive Protection test after exposure of the panels in the humidity cabinet for a minimum of 100 hours, when tested as specified in 4.5, I 3.6 Steel on steel wear (all types)., The wear scar shall not be more than 1,OO m in diameter when tested as Specified in 4.5. 3.7 Eut-up., Unless o

10、therwise specified, the waxes shall be put-up in 11 pound (5 kg) slabs conforming to standard commercial practice. appearance, and free from any foreign matter which may impair its utility. 3.8 Workma.nship, The finished product shall be clean, homogeneous in 3.9 Labeling. Waxes shall be labeled as

11、follows: Suspected carcinogen, I avoid skin contact. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1-1 IL-w-13 94 5D 4.3.1.2 Examination_lr net we

12、_ighc. The sample unit for this examination shall be one wax slab. net weight is less than specified. The lot shall be unacceptable if the average sample * 4.3.1.3 Packaging inspection. An examination shall be made to determine that the packing and marking comply with the section 5 requirements, Def

13、ects shall be scored in accordance with the list below. one shipping container fully prepared for delivery except that it need not be closed, Examination for closure defects shall be made on shipping containers fully prepared for delivery. containers in the end item inspection lot. The sample unit s

14、hall be The lot size shall be the number of shipping - Examine Defect Markine (exterior) Omitted, incorrect, illegible, of improper size, location, sequence or method of application. Mat er ia 1s Any component missing, damaged or not as specified. Wor kmanship Inadequate application of components, s

15、uch 6 Incomplete closure of container flaps, loose strapping, improper taping or inadequate stapling. Bulged or disGorted containers, Content w 1/ For this defect, one shipping container in the sample shall be examined. 4.4 Inspection levels and acceptable _quality levels (_A_Ls) for examina- -. tio

16、n. acceptable quality levels (AQLs) expressed in defects per 100 units shall be as follows: The inspection levels for determining the sample size an the -_1-_*1- Examination parasraph - Insection -. level -. AQL 4.3.1.1 s -3 2.5 4.3 . 1 . 2 s -2 N.A. 4.3.1.3 s-2 2.5 Provided by IHSNot for ResaleNo r

17、eproduction or networking permitted without license from IHS-,-,-. MIL-W-13745D 71 77777Ob 0100518 7 MIL-W-13945D 4.5 Testing of the end item. A composite sample of the end item shall be tested for the characteristics listed in table III for each lot. For purposes of sampling, a lot shall consist of

18、 the finished hydrocarbon wax of one type made in a single batch. The sample unit for testing shall be a 2-pound (0.91 kg) composite. The sample size shall be as indicated below. The portions selected for the composite sample shall be melted together, mixed thoroughly and cast in a mold prior .to te

19、sting. be stored in a clean, dry, sealed container for testing. Care shall be exercised to prevent contamination or alteration of the composite during the sampling, compositing, storage and testing. All test reports shall contain the individual values utilized in expressing the final result. The lot

20、 shall be unacceptable if the composite sample fails to meet any specified requirement. The composite sample shall - Lot size (pounds) 800 or less 2 801 up to and including 22,000 3 22,001 or more 5 Sample size 1 I 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without licens

21、e from IHS-,-,-. MIL-1.1-1 294 5D c- rlb- CLC : :-: r H H a G (., H rn al a ? U u k Y 5 C fi o -rl U m U .rl w -4 K O V, 2 n 3 H F 9 2 R H H U ms GH OH .rl H U a- LH UH al a rn alal $I- n H al U h“ W U C *rl O a rn m ri cii rr n H al U W U c .li O al & rl k R a n al Q h U W U G Y u c c U rl -4 O C O

22、 ar( u U al U O &I a d O *?i rn O & &l O U & rb rl al al u (II G O rl al al U WY Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-the weighed sample shall be dissolved in 50 milliliters (mi) of hot xylene before starting the test. point of titrations,

23、 ASTM Method D 664 shall be used with the above modifica- tion. If difficulty is encountered in observing the end * 4.6.2 Determination of saponificationi3_umber (types I and II only). The saponification number shall be determined in accordance with ASTI4 Nethod D 94, except that an accurately weigh

24、ed sample of approximately 10 grams (g) shall be taken and dissolved in 50 ml of hot xylene before beginning the test. * 4.6.3 Determination of iodine number (tvDec II and IV onlvl. The iodine 4.6.4.1 Types I, II and III. An accurately weighed portion of approximately sample shall be dissolved in ab

25、out 200 ml of be&ene on a steam bath. The solution shall be filtered through a tared Gooch crucible which has previously been heated and washed with hot benzene. the beaker shall be dissolved in hot benzene. The washings shall be transferred to the crucible and the crucible washed with hot benzene u

26、ntil the residue and crucible are wax-free. use as specified in 4.6.5 and 4.6.6. The crucible and contents shall be dried for 1 hour at 100“ to 105“C, cooled in a desiccator, and weighed, The gain in weight of the crucible shall be calculated to percentage of benzene insoluble material. The wax whic

27、h adheres to I The filtrate of type III wax shall be saved for further - 4.6.4.2 Type V Only. Use clean medium porosity glass filtering crucibles which will allow 20 ml of hot benzene to flow through them, under suction, within 15 seconds or less. Condition the crucibles prior to use as follows: was

28、h three (3) 20 ml portions of hot benzene thru the crucible with the aid of suction, wash one (1).20 mi. portion of acetone through the crucible, back wash the crucible with one (i) 20 ml portion df acetone, dry the crucible in an oven, cool the crucible in a desiccator, weigh the crucible and recor

29、d weight, return crucible to oven and maintain at 100 2 5C until used. I Weigh approximately 5 grams of the sample to the nearest 0.1 milligram and transfer to a 400 ml beaker. Add approximately 250 mi of benzene to the beaker. Dissolve the wax in the benzene solvent by placing the beaker aiid 9 Pro

30、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-TJ-13945D contents on a steam bath and heat at a temperature of 65C minimum, heating until the wax dissolves (stirring may be used). solution through the previously conditioned and tared hot crucible w

31、ith the aid of suction. Maintain the crycible and contents at above 6C to prevent the wax from coming out of the solution. available equipment to maintain the temperature of the benzene solution. Wash the wax which adheres to the beaker with hot benzene and transfer the ticishings to the crucible, W

32、ash the crucible with hot benzene until the residue and crucible are free from wax, or until approximately 5 ml of the washings, when evaporated to dryness, leaves no residue. Continue Filter the hot Use a heat gun or other commercially Retain the filtrate for the determination of acidity or alkalin

33、ity as speci- fied in 4.6.5, During filtration air must not be sucked through the crucible. This is to prevent the air from cooling the filtering surface which could cause the wax to come out of solution and clog the crucible. Dry crucible and contents in an oven for 30 minutes at 100C to 105“C, coo

34、l in a desiccator, and weigh. follows : The percentage of benzene insoluble matter is calculated as Percent insoluble matter = I3 Where: A = increase in weight of filtering crucible, in g B = weight of sample, in g 4 fil be 6.5 D-e$erminatio,n, of mineral acidsty or alkalinity (types III and V . tra

35、te from the determination of benzene-insoluble matter (see 4.6.4) shall transferred to 500 nil separatory funnel, and the flask rinsed with two 10 ml portions of benzene, be adde to the funnel, the mixture shaken, the phases allowed to separate, and the aqueous layer withdrapm. The procedure of addi

36、ng water, shaking, and separating shall be repeated two or more times. The aqueous extracts shall then be combined, and tested with blue and red litmus papers of such sensitivity that their colors are completely changed in one minute by N/250 sulfuric acid or eodium hydroxide solutions, respectively

37、. If inorganic acidity or alkalinity ia present, it shall be determined by noting if the trater extract changes the color of either paper within 30 seconds. Twenty-five milliliters of distilled water shall 4.6.6 DetermnEion of organic acidity., (tze III only), Three drops of phenolphthalein indicato

38、r shall be added to the water extract obtained as directed in 4.6.5 and the solution titrated with an accurately standardized sodium hydroxide solution, approximately N/10. A blank determination shall be made of tho same quantities of benzene and water as were used in dissolv- ing and extracting the

39、 sample. percentage of acetic acid in the sample as follows: Any organic acidity shall be calculated to 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IH

40、S-,-,-a mL-W-139 4 5D (a) Coating Test Panels: Three test panels shall be immersed in the molten compound, maintained at Che recommended temperature for application, until the temperature of the panels reach that of the compound. The panels shall then be withdrawn mechanically at the rate of four in

41、ches per minute so that a film of compound 1.5 - i- 0.2 mils in thickness shall adhere to the panels. (b) Film Thickness: The thickness of the applied film may be de- termined by using similar panels dipped in the same manner and using the specific gravity-weight surface area method or any other sui

42、table method. (c) The panels should be allowed to hang for approximately 16 hours before being placed in the humidity cabinet, (d) On completion of the test, the compound shall be removed by a suitable solvent and the panels evaluated as specified. 4.6.14 Steel on steel wear. This test shall be dete

43、rmined in accordance with ASn lfethod D 2266. 5. PACKAGING 5.1 paca. 5.1.1 -_LI Level A. Packing shall be level A, B, or C, as specified (see 6.2). J: Five slabs of wax of one type only, put up as specified (see 3,7), shall be packed in a snug-fitting fiberboard shipping container conforming to styl

44、e CSSC, grade V2s of PPP-E-636. Each slab of.wax shall be completely separated with a sheet of polyethylene film or other material in Buch a manner as to effectively prevent adjacent slabs of wax from sticking together, waterproofed in accordance with method V, and reinforced as specified in the app

45、endix of PPP-3-636, except that the inspection shall be in accordance with 4.3.1.3. Each shipping container shall be closed in accordance with method III, 2.: 5.1.2 Level Iz. Five slabs of wax of one type only, put up as specified (see 3 ,i), shall be packed in a snug-fitting fiberboard shipping con

46、tainer conforming to style CSSC, type CF, (variety SW) or SF, class domestic, grade 275 of PPP-3-636. polyethylene film or other material in such a manner as to effectively prevent adjacent slabs of wax from sticking together. shall be closed in accordance with method II as specified in the appendix

47、 of PPP-B-636, except that the inspection shall be in accordance with 4.3.1.3. the fiberboard shipping container shall be grade VC, VS, or V4s fiberboard box fabricated in accordance with PPP-13-636 and closed in accordance with method III as specified in the appendix of PPP-B-636, except that the i

48、nspec- tion shall be in accordance with 4.3.1 3, Each slab of wax shall be completely separated with a sheet of Each shipping container * 5,1,2.1 Ether-resistant fiberboard container. When specified (see 6.2), 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-HIL-W-1137Ll5D 711 M 7777906 01100524 2 O a * * a I1 I L -W-13 9 4 5u 5.1.3 Level C (Commercial Packing). Wax shall be packed in a manner to insure carrier acceptance and safe delivery at destination at the lowest transportation rate for suc