1、I .!i - .- MIL-C-005537B 68 W 77777Ob OLLqbO5 b W CJ- 57-07 Beneficial comments (recommendations, additions, deletions) and any pertinent dita which may be of use! in improving this document should be addressed to: Commander, MI Army Armament Research and Development Center, Attn: AMSMC-QA, Dover, N
2、ow Jew 07801-5001 by usng the self-addressed Standardization Document Improvernmt MIL-C- O055 37B (AR) 13 May 1986 Used in Lieu of 21 May 1953 MIL-C-5537A MILITARY SPEC1 FI CATION CELLULOSE ACETATE BUTYRATE (CAB) This specification is approved for use within the US Army Armament, Munitions and Chemi
3、cal Comand, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements and quality acceptance provisions for the manufacture and acceptance of two types of Cellulose Acetate Butyrate (CAB) (See 6.1): Type I: A
4、cetyl- Content 29.5%, Butyryl Content 17% Type II: Acetyl Content i3.5%, Butyryl Content 37% 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. Unless other- wise specified, the following specifications and standards of the issue listed in that issue of the Departm
5、ent of Defense Index of Specifications and Standards (DoDISS) specified in the sol-icitation form a part of this specification to the extent spec i fi ed here i n . SPECIFICATIONS FEDERAG O-A-51 - Acetone TT-P-141 - Paint, Varnish, Lacquer and Related Materials; O-A-396 - Alcohol, Ethyl Methods of I
6、nspection, Sampling and Testing MI LI TARY MIL-C- 21 6B - Cellulose, woodpulp ( sulf i te) MIL-A-48078 - Ammunition, Standard Quality Assurance Provis ions, General Specifications For AMSC NIA FSC: 6810 Approved for public release; distribution is unlimited. DISTRIBUTION STATEMENT A. THIS DOCUMENT C
7、ONTAINS !a -. PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL -C- O O 5 5 3 7B bdCF? 7Tq b OTL 4bob 8 = MIL-C-OO5537B (AR) c . STANDARDS MILITARY MIL-STD-1168 - Lot Numbering of Ammunition (Copies of specifications, standards , drawings a
8、nd publications required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the Contracting Officer .I of this specification to the extent specified herein. The issue of the documents which are indicated as DoD adopte
9、d shall be of that issue listed in the current DoDISS and the supplement thereto, if applicable. 2.2 Other publications. The following documents form a part AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM E 300-73 - Recommended Practice for Sampling Indus tr i al Chemical s ASTM D 618-61 - Co
10、nditioning Plastics and Electrical Insulating. Materials for Testing ASTM D 817-72 - Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate ASTM D 1343-69 - Test Method for Viscosity of Cellulose Derivatives by Ball-Drop Method ASTM D 2905-83 - Practice for Statement oh Number of Specim
11、ens Required to Determine the Average Quality Textiles. ASTM D 3951 - Standard Practice for Canmercial Packaging (Applications for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) 2.3 Order of precedence. In the event pf a confl
12、ict between the text of this specification and the references cited herein, the text of this specification shall take precedence. Specification , however , shall supersede applicable laws and regulations unless a specific exemption has been obtained. Nothing in this 2 Provided by IHSNot for ResaleNo
13、 reproduction or networking permitted without license from IHS-,-,-.- a o o MIL-C-005537B 68 W 7999906 OLL4607 T W MIL-C-OO5537B (AR) 3. REQUIREMENTS 3.1 Material. CAB shall be a product of esterification from newly purified cellulose. No reworked (material which previously did not meet requirements
14、 and was reprocessed) material shall be used in the production of the CAB. The CAE3 shall conform to the requirements given in this detailed specification. - 3.1.1 Chemical and physical properties of type I. The chemical and physical properties of Type 1 CAB shall conform with Table I when tested in
15、 accordance with the applicable test paragraph . TABLE I - TYPE I Chemical and physical properties Property Applicable Test Requirement Par a qr aph Butyryl content (by weight, %) 17.0 5 2.0 Acetyl content (by weight, %) 29.5 2 2.5 Hydroxyl content (by weight, %) 1.3 i 0.5 Free Acidity (as acetic 0.
16、12 Max Moisture, (by weight, %) 3.0 Max acid), (by weight, %) Viscosity, seconds 19 2 5 4.5.2 4.5.2 4.5.3 4.5.4 4.5.6 4.5.8 3.1.1.1 Bronzinq properties of type I CAB. A vehicle containing 10 percent of CAB and 90 percent acetone, conforming to specification O-A-51, by weight shall exhibit no gelatio
17、n after standing for 15 hours for the bronzing test as determined in accordance with 4.5.11. 3.1.1.2 Stability of type I CAB. 3.1.1.2.1 Boilinq water. The CAB when boiled in water for 7 hours, shall not show an increase in acidity of more than 0.10 percent calculated as acetic acid as determined in
18、accordance with 4.5.12. be any darker than a light tan, when heated at 190C (374OF) for 1 hour, as determined in accordance with 4.5.12. 3.1.1.2.2 Heat. The CAB shall not darken in spots, melt, or 3.1.1.3 Solubility of type I CAB. 3.1.1.3.1 Ethylene dichloride. A solution containing 12 parts of CAB
19、to 88 parts of ethylene dichloride by weight, shall be clear and smooth after agitation for 16 hours, as determined in accordance with 4.5.13. 4 3 -. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.1.1.3.2 Alcohol and acetone. CAB shall exhibit at
20、least 95 percent solubility when 1/10 gram is added to a mixture of 5 ml of acetone and 3 ml o ethyl alcohol, in accordance with Specification 0-A-396, and less than 70 percent solubility when 1/10 gram is added to a mixture of 5 ml of acetone and 8 ml o ethyl alcohol, at a temperature of 25OC (77OF
21、) , as determined in accordance with 4.5.13. 3.1.1,4 Color of type I CAB . A solution containing one part o CA3 to four parts acetone by weight shall exhibit a color value less than a standard No. 4 Hasen solution, as determined in accordance with 4.5.11. 3.1.1.5 Clarity of type I ,CAB . A solution
22、containing one part CAB to nine parts acetone by weight shall have a haze value of not: more than 11.5 percent when determined as specified in 4.5.14. 3.1.2 Chemical and physical properties fortype II. The chemical and physical properties of Type II CAB shall conform with Table II when tested in acc
23、ordance with the applicable test paragraph . TABU3 II - TYPE II Chemical and physical property Property Requirement Butyryl content (by weight, %) Acetyl content (by weight, %) Hydroxyl content (by weight ,%) Free acidity, as acetic acid, (by weight, %) Moisture, (by weight %) Cellulose Woodpulp (by
24、 weight , %) Viscosity, seconds Softening Point Range Ash, (by weight, %) 37.0 5 2.0 13.5 f 1.5 1.7 3 0.5 O. O 3-MAX 0.05 MAX 3.0 MAX 44.72 f: 7.08 20.5 C 3.5 nforiation Appl ica bl e Test Paragraph 4.5.2 4.5-2 4.5.3 4.5.4 4.5.5 4.5.6 4.5.7 4.5.8 4.5.9 3.2 First article inspection. This speciication
25、 contains technical Provisions for first article inspection. Requirements or the suhission of first article sample; by the mncractor shall be as specified in the contract. 3.3 Molecular weight distribution. The molecular weight distribution of the CAB shall be determined as tested in accordance with
26、 4.5.10. and shall be for information purposes only. 3.4 WorkmanshiE. The manufacturer shall use procedures and controls which assure that the CAB produced does not contain foreign materials such as dirt, rust, paint, or metal chips, etc. 4 Provided by IHSNot for ResaleNo reproduction or networking
27、permitted without license from IHS-,-,-c- r3 d MIL-C-005537B b 9999906 OLL11607 3 W MIL-C-005537B (AR) The determination of foreign matter shall be in accordance with 4.5.15. 4. QUALITY ASSURANcE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase ord
28、er, the contractor is responsible for the Berformance of all inspection requirements as specified herein. or purchase order, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The
29、Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items must meet all requirements of sections 3 and 5
30、. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the contractor of the responsibility of assuring that all products or supplies suhni
31、tted to the Government for acceptance comply with all requirements of the contract. Sampling i-n quality conformance does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to Except as otherwise specified in the contract acceptance af
32、 defective material. inspection shall be conducted on this item: 4.2 Classification of inspections. The following types of a. First article inspection (see 4.3). b. Quality conformance inspection (see 4.4). 4.3 First article inspection. 4.3.1 Submission. The contractor shall suhit a first article sa
33、mple as designated by the Contracting Officer for evaluation in accordance with provisions of 4.3.2. The first article sample shall be 3 1bs of CAB. The sample shall be obtained from the first production lot which has been produced by the contractor using the same production processes, procedures, a
34、nd equipnent as will be used in fulfilling the contract. All materials shall be obtained frm.the same sources of supply as will be used in regular production. may be subjected by the Government to any or all of the examina- tions or tests specified herein in this detail specification. 4.3.2 Inspecti
35、ons to be performed. The first article sample 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-C-0055378 68 9999906 OCL46iO T e. ? MIL -C-O O 5 53 7B (AR) 4.3.3 Rejection. If the first article sample fails to cmply with any of the applicable re
36、quirements, the lot shall be rejected. The Government reserves the right to terminate its inspection uwn any failure of a sample to comply with any of the s t at e d r e qui r eme n ts . ( S e e MIL -A -4 80 7 8) 4.4 Quality conformance inspection. 4.4.L Inspection lot formation. A lot shall consist
37、 of one or more batches of CAB produced by one manufacturer, in accordance with the same specification, or same specification revision, under one continuous set of operating conditions . Each lot shall be a homogeneous product, The lot shall cmply with the provisions for same unit chemical or physic
38、al process intended to make the final submission o product as specified in MIL-A-48078. The criteria and procedure for the assignment of lot numbers shall be in accordance with MIL-STD-116 8. 4.4.2 Samplinq. A representative sample of approximately 3 lbs shall be obtained from each lot being submitt
39、ed for acceptance. Sampling procedures provided in ASTM E 300-73 shall be employed. The sample shall be tested in accordance with procedures given in para. 4.5 to determine compliance with the requirements given in Section 3. If the sample fails to meet any of the test requirements, the lot represen
40、ted by that sample shall be rejected. 4.4.3 Inspction equipnent. For the performance of all tests and examinations specified within, commercial inspection equipnent should be employed. The contractor shall have available, and utilize correctly, this equipment and is charged with the responsi- bil-it
41、y of assuring that proper calibration procedures are followed. Government: approval of all inspection equipent is required prior to its use for acceptance purposes (see 6.3) . 4.5 Methods of inspection. All tests given in this section shall be pez: ormed using prescribed procedures for replicate det
42、ermination given in standard analytical chemistry textbooks or ASTM D 2905-83, Unless otherwise indicated, reagent grade chemicals shall be used in all tests, and they shall conform to the spcifications of the Canmittee on Analytical Reagents of the American Chemical Society. Other grades may be use
43、d, provided it is ascertained that the reagent is of sufficiently high purity to permit its use without lessening the accuracy of the determination. 23.0 + 20C and 50 5 5 percent relative humidity for not less than 40 hours prior to test (in accordance with ASTM D 618-61). 4.5.1 Conditioninq of samp
44、le. Condition the test specimen at Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1, W. MIL-C-005537B 68 = 7777706 OlL461L I W 4.5.2 Acetyl and butyryl contents. Determine the acetyl and butyryl contents of the sample as directed in ASTM Designation
45、: D 817-72 (1978), Sections 13 through 28, “Standard Method of Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate“. the sample as directed in ASTM Designation: D 817-72 (1978) , Sections 29-39, “Standard Method of Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate“
46、. 4.5.3 Hydroxyl content. Determine the hydroxyl content of 4.5.4 Free acidity, as acetic acid. Determine the free acidity as acetic acid as directed in ASTM Designation: D 817-72 (1978); Sections 8 through 12, “Standard Methods of Testing Cellulose Acetate Propionate and CeIlulose Acetate Butyrate“
47、 . 4.5.5 Ash content. Determine the ash content of the sample as directed in ASTM Designation: D 817-72 (1978), Sections 6 and 7, “Standard Methods of Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate“ . 4.5.6 Moisture content. Determine the moisture content of the sample as direct
48、ed in ASTM Designation: D 817-72 (1978), Sections 4 and 5, “Standard Methods of Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate“ . 4.5.7 Cellulose woodpulp content. The CAB shall consist of Butyryl, Acetyl, Hydroxyl, Free Acidity, Ash, and Moisture conforming to the requirements
49、of Table II of this specification. The remaining ingredient after subtraction of the aforementioned ingredients shall be only cellulose woodpulp conforming to MIL-C-216B (grade A or B) . 4.5.8 Viscosity determination, seconds. Determine the viscositv of the sample as directed in ASTM Designation: D 817-72 * (1978) , Sections 57 and .58, “Standard Methods of -Testing Cellulose Acetate Propionate and Cellulose Acetate Butyrate“, and ASTM Des
