ARMY MIL-C-20470 A-1961 CALCIUM RESINATE《树脂酸钙》.pdf

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1、MILITARY SPECIFICATIONCALCIUM RESINATENIIL-C-20470A22 DECEMBER1961SUPERSEDINGMIL-C-2047027 NOVEMBER19511.SCIOPEThis specification has been appvoved b the Department of Defen8e and ismandato for use by the Departments of the Army, the Navy, and the Air Force.1.1 Scope. This specification covers the r

2、e-quirements of calcium resinate.1.2 Classification. Calcium resinate shallbe of the following types, as specified (see6.2) .Type I l?used.Type 11 Precipitated.2. APPLICABLE DOCUMENTS2.1 The following documents, of the issuein effect on date of invitation for bids, forina, part of th specification t

3、o the extentspecified herein.SPECIFICATION ,FEDEIt RR-S-366 Sieves,. Standard, forTesting Purposes.,S!lLA.lNDARDMILITARYMIL-STD-129 Marking far Ship-ment and Storage.(Copies of specifications, standards, and drawingsrequired by contractors in connection with specificprocurement functions should be o

4、btained from theprocuring agency or as directed by the contractingofficer. )3. REQUIRENfENTS3.1Material.TypeI calciti resinate shallbe yellow or brown in color. TypQ II calciumresinate shall be a yellowish white amorp-hous powder, free from lumps, cakes andagglomerations.3.2 Composition The chemical

5、 and physi-cal properties shall conform to the require-ments in table I., ,.,. ,., ,.LE?lProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.MIC-204?4 -“-,. . . . . .,., , TABLEI.Chemical and physical p?operties. . .I .Tmex I Tme II, :. Calcium resinate

6、 content, percent 56.0 min. 77.0 min“Acid number 64 max 33 maxChloroform-insoluble matter, percent 2.0 max 3.0 maxWater content, percent . 2.0 max, 5.0 maxFlame test “Yellow-red Yellow-redGranulation through 60 sieve, percent ;.:. nope. “75 l+.Granulation through 4 “ .“,.,2 a71Provided by IHSNot for

7、 ResaleNo reproduction or networking permitted without license from IHS-,-,-o.0a“/oa71-.o4.4.2- ChloioformAnsobuble m,attw.4.4.2.1 Tjpe L Transfer approximately Zgrams of the sample accurately weighed to0.1 milligram, to a 250-rnilliiter beaker, add50 milliliters of chloroform, and allow tostand for

8、.1 hour, while swirling occasionally.-MILC-204!70AFilter through a Gooch crucible pireparedwith Powminco “acid washed Gooch asbestos(see 6.3) and transfer and wash the pre-cipitate with chloroform. Save !the filtrate forthe calcium resinate determination. Qry thecrucible at 105 C. for 1 hour, cool,

9、andweigh. Calculate as follows:Percent chloroform-insoluble matter = 6,J o,f residue . 100 “gm of sample4.4.2.2 Type 1. Proceed as with type I butuse a 1 gram sample.4.4.3 (7alcium resinate content.4.4.3.1 Rwgents. I” , ., .Buffer jolution. Dissolve 67 grams of.apmonium chloride in about W millilier

10、water, add 570 milliliters of anuhonium hy-droxide, and jdilute to 1 liter with .Water . .Eriochrome Black T indicator. Dissolve6.4 ;grams-.of Eriochrome Black T in 100milliliters of methyl alcohol.- kandard.aalcum” wluton. Dissolve 220grams” of, reagent grade calcium carbonatein a “mifiure of 20 mi

11、lliliters of water and 5rnillili$ers- of hydrochloric acid by boilinggently on the hot plate. Cool, and dilute to 2liters. Sl+ndardize as. follows: Pipet a 100Imilliliter aliquot into a 400 milliliter beaker,and add 100 milliliters of water and 5 milli-liters of hydrocloric acid. Heat to about 95C.

12、and add 50 milliliters of oxalic acid SOIU- .tion (2 percent) that has, also been heatedto about 95, Add ammonium hydroxidedropwise with stirring until the solutionsmells yfaintly of ammonia, Place on the ., Ibench. and allow to stand for” 2 hours. Filterthrough a filtered gkiss crucible. of mediump

13、orosity. Transfer the precipitate to $hecrucible and wash with 0.1 percent oxalic.acid solution. Finally wash theprecipitateonce with a small amount of water. Placethe crucible into a 600 milliliter beakercontaining 300 milliliters of water and 12milliliters of sulfuric acid. Stir, heat toabout 60 t

14、o dissolve and titrate with 0.1N potassium permanganate. Calculate as fol-lows: -” “ I,of KMnO, x Norm. of K.Mn04 x 0.05.0045 .,. .:Gins. of CaCo, per ml ofsolution=mlml of CaCo, :solution taken for titration.Versenate solution. Dissolve 8 grams of”,add 30 milliliters “of water, 10 milliliters of.Ve

15、cover and place on a brass pan. Set the neston a holder of a sieve machine and run for 10minutes. Weigh the amountrernaining in thesieve and pan separately and calculate thepercentage. The sieve machine used may be a omechanical shaker geared to produce 300plus or minus 15 gyrations and 152 plus orm

16、inus 10. taps of the strike per minute.a71,Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILG20470A4.4.6.2 Type 11. Proceed as with type Ibut use a No. 60 U. S. Standard sieve.4.5 Resubmission and retest. If the samplesubject to test fails to pass

17、the tests, thelot shall be rejeded subject to reworking andresubmission. The lot shall be considered ac-ceptable provided that a new sample, selectedin ,accordance with 4.2, passes all the testsrequired by this specification.5. PREPARATION5.1Packing.5.1.1Level C. TheFOR DELIVERY.calcium resinate sha

18、llbe packed and delivered in polyethylene bagsin airtight containers. The air space at thetop of the container should be kept at aminimum. Unless otherwise specified in thecontract or, order, the capacity of a packageshall not exceed 300 pounds.5.2 Marking.In addition to any specialmarking required

19、by the contract or order,shipments shall be marked in accordancewith Standard MIL-STD-129.5.2.1Precautionary Marking. Each con-tainer shall be marked Flammable andStore in a cool place away from areas ofacute fire hazard and open flame.6. NOTES6.1Intendeduse.Calcium resinate is in-tended for use in

20、pyrotechnic compositions.6.2 Ordering data. Procurement documentsshould specify the following:(a) Title, number, and date of thisspecification.(b) Type required (see 1.2 and 3.2).(c) Selection of packing and packaging.6.3 Powminco acid washed Gooch asbestosmay be obtained from the Arthur H. ThomasCo

21、, Philadelphia, Pa.6.4 Alexander-type moisture tubes areavailable commercially from Scientific GlassApparatus Co., Vineland, N. J. (CatalogueJ52 and No. J2078) and Kontes GlassWorks, Vineland, N. J. (No. K-75500).Notice. When Government drawings, specifications,or other data are used for any purpose

22、 other than inconnection with a definitely related Government pro-curement operation, the United States Governmentthereby incurs no responsibility nor any obligationwhatsoever and the fact that the” Government mayhave formulated, furnished, or in any way suppliedthe said drawings, specifications, or

23、 other data isnot to be regarded by implication or otherwise asin any manner licensing the holder or any otherperson or corporation, or conveying any rights orpermission to manufacture, use, or sell any patentedinvention that may in any way be related thereto.Custodians: Preparing activity:&myOrd Army-OralNavy-WepProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-