1、MIL-P-Zb5C 68 W 777970b OLL3625 7 W =- .I H-57-3fMETRICl MIL-P-265C(EA) SUPERSEDING MIL-P-O0265B(MU) 18 June 1968 MIL-P-265A 25 March 1957 - MILITARY SPECIFICATION POLYVINYL ALCOHOL, GRANULAR (METRIC) This specification is approved for use by US Army Armament Research and Development Command, Depart
2、ment of the Army, and is available or use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers two grades and two classes of polyvinyl alcohol. 1.2 Classification. Polyvinyl alcohol shall be of the following grades and classes, as specified (see
3、 6.2): Grade A - Saponification No. 125 to 167 Grade B - Saponification No. O to 18.7 Class 1 - For use as a dispersing agent Class 2 - For use in munitions 2. APPLICABLE DOCWNTS 2.1 Issues of documents. The following documents of the issue in effect on date of invitation for bids or request for pro
4、posal, form a part of this specification to the extent specified herein. FSC 6810 : Beneficial comments (recommendations, additions, deletions) and any perti- : : nent data which may be of use in improving this document should be addressed: : to: Commander, US Army Armament Research and Development
5、Command, ATTN: : DRDAR-TSC-S, Aberdeen Proving Ground, MD 21010 by using the self-addressed : : Standardization Document Improvement Proposal (DD Form 1426) appearing at : : the end of this document or by letter. 9 THIS DOCUFflENT CONTAINS - PAGES. Provided by IHSNot for ResaleNo reproduction or net
6、working permitted without license from IHS-,-,-SPECIFICATIONS FEDERAL RR-S-366 - Sieve, Test PPP-D-729 - Drums, Shipping and Storage, Steel, 55 Gallon (208 Liters) MILITARY MIL-B-117 - Bags, Sleeve and Tubing - Interior Packaging STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for In
7、spection by At t ri but es MIL-STD-129. - Marking for Shipment and Storage MIL-STD-147 - Palletized Unit Loads MIL-STD-1188 - Commercial Packaging of Supplies and Equipment (Copies of specifications, standards, drawings and publications required by contractors in connection with specific procurement
8、 functions should be ob- tained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. The following documents om a part of this spec- ification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or
9、request for proposal shall apply* UNIFORM FEIGKT CLASSIFICATION RULES (Application Tor copies should be addressed to the Uniform Classification Committee, Room 1106, 222 South RFverside Plaza, Chicago, IL 60606.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) STANDARDS D445 - Kinematic Viscosity
10、of Transparent and Opaque Liquids (and D1193 - Reagent Water the Calculation of Dynamic Viscosity) (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Technical society and technical association specifications and
11、 standards are generally available or reference from libraries. among technical groups and using Federal agencies.) They are also distributed 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MIL-P-265C 68 m 9999906 OLL3627 O = MIL-P-265C( EA) 3. R
12、EQUIREMENTS 3.1 Chemical and physical characteristics. Polyvinyl alcohol shall conform to applicable chemical and physical characteristics OE table I when tested as specified therein. TABLE I. Chemical and physical characteristics - I_- : Test : Characteristic : Grade A : Grade B :paragraph: : Volat
13、ile matter, percent by weight, . : maximum 5.0 : 5.0 : 4.2.4.1 : : Saponification number (dry basis) : 125 to 167 : O to 18.7 4.204.2 : : (dry basis) 1.25 : 1.25 : 4.2.4.3 : : Ash, percent by weight, maximum : Absolute viscosity of 4.0 percent by : cent ipoises : 35 - + 10 : 25 - + 7 : 4.2.4.4 : : w
14、eight solutton at 20.0 - + 0.loC, t : : Water insoluble matter, percent by : : weight, maximum (dry basis) . 1.5 : - : 4.2.4.5 : : pH of 4.0 percent by weight solution : 6.0 - + 1.0 : 6.5 - + 1.5 : 402.4.6 - : : 3.2 Particle size. Polyvinyl alcohol shall conform to the particle size characteristics
15、of table II when tested as specified in the applicable portion of 4.2.4.7. TABLE II, Particle size characteristics : Minimum percent by weight passing : Class 1 : Class 2 : : NO. iosieve : 99.0 : - : : No. 20 sieve : 95.0 : - : : 99.0 : : No. 80 sieve O - . 4. QUALITY ASSURANCE PROVISIONS 4.1 Respon
16、sibility for inspection. Unless otherwise specified in the con- Except as otherwise specified in the tract, the contractor is responsible for the performance of all inspection requirements as specified herein. contract, the contractor may use his own or any other facilities suitable for the performa
17、nce of the inspection requirements specified herein, unless disap- proved by the Government, The 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 specified require- me
18、nts. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-265C (EA) 4.2 Quality conformance inspection. 4.2.1 Lotting. A lot shall consist of the polyvinyl alcohol of one grade and class produced by one manufacturer, at one plant, from the same ma
19、terials, and under essentially the same manufacturing conditions provided the operation is continuous. constitute a lot (see 6.3). In the event the process is a batch operation, each batch shall 4.2.2 Sampling. 4.2.2.1 For examination of packaging. Sampling shall be conducted in ac- cordance with MI
20、L-STD-105. 4.2.2.2 For polyvinyl alcohol test. Sampling shall be conducted in accord- A representative specimen of approximately 400 grams (n) ance with table III. shall be removed from each sample container and placed in a suitable Clean, dry container labeled to identify the lot and container from
21、 which it was taken. TABLE III. Sampling for polyvinyl alcohol test : Number of containers in batch or lot : Number of sample containers : 2 to 25 . 2 26 to 150 3 151 to 1,200 5 1,201 to 7,000 8 7,001 to 20,000 . Over 20,000 20 . . . 10 . : 4.2.2.3 For container leakage test. Sampling shall be condu
22、cted in ac- cordance with MIL-STD-105. 4.2.3 Inspection procedure. 4.2.3.1 For examination of packaging. The sample unit shall be one shipping Sample shipping containers shall be examined for container ready for shipment. the following defects grouped collectively using an AQL of 4.0 percent defecti
23、ve: (a) (b) Container not as specified (c) (d) Container damaged or leaking (e) (f) (8) Unitization not as specified Contents per container not as specified Container closure not as specified Marking incorrect, missing, or illegible Liner bag missing or not as specified (when required) 4 (a Provided
24、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_. MIL-P-2bSC b W 999990b 0333629 4 W I MIL-P-265C(EA) 4.2.3.2 For polyvinyl alcohol test. shall be tested as specified in 4.2.4. Each sample specimen taken in 4.2.2.2 Failure of any test by any specimen shall
25、be cause for rejection of the lot represented. . 4.2.3.3 For container leakage test. The sample unit shall be one container. The sample containers selected in 4.2.2.3 -shall be tested as specified in 4.2.5 using an AQL of 2.5 percent defective. 4.2.4 Tests. Water in accordance with ASTM D1193 and re
26、agent grade chemi- Test6 cals shall be used throughout the tests. Where applicable, blank determinations shall be run and corrections applied where significant. shall be conducted as follows: 4.2.4.1 Volatile matter. Weigh, to the nearest 0.01 g, approximately 10 g of the specimen into a tared cryst
27、allization dish approximately 50 millimeters (mm) in diameter and 35 mm high. Cool to room temperature in a desiccator and weigh. volatile matter as follows: Heat in an oven at 105 to 110C for 3 hours. Calculate the percent Percent volatile matter = 100 (A - B) (A - C) where: A = Weight of dish and
28、specimen before heating in grams, B = Weight of dish and specimen after heating in grams, and C - Weight of empty dish in grams. i 4.2.4.2 Saponification number. Weigh to the nearest milligram (mg) approxi- mately 1 g of specimen previously dried at 100 i- SOC for 3 hours, and quanti- tatively trans
29、fer to a 250-milliliter (ml), wide=mouth Erlenmeyer flask having a standard taper ground glass connection. Add 50 ml of methanol and swirl the flask. Add 1 ml of a 0.1 percent ethanol solution of phenolphthalein and neutralize with 0.1N sodium hydroxide solution or 0.1N hydrochloric acid, as require
30、d. solutin and a few glass beads. Prepare a second flask for use as a blank as specified for the first flask except omit the specimen. the flasks to cool to room temperature and titrate each with 0.1N hydrochloric acid using phenolphthalein as indicator. (S) as follows: Add 50 ml of water and swirl
31、again. Add 10.0 ml of 0.5N sodium hydroxide Connect the flask to a reflux condenser. Reflux the specimen and the blank for 1 hour. Allow Calculate the saponification number S 5,610 A (B - C) W where: S = Number of milligrams of potassium hydroxide required to saponify A = Normality of hydrochloric a
32、cid used, B = Milliliters of hydrochloric acid used to titrate blank, C = Milliliters of hydrochloric acid used to titrate specimen, and W = Weight of dried specimen in grams. 1 g of dried specimen, 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4
33、.2.4.3 Ash. Weigh to the nearest milligram approximately 2 g of the - specimen into a tared platinum crucible. until most of the carbon is burned off. 1 to 1 sulfuric acid, carefully evaporate to dryness over a burner, and then place in a muffle furnace at 800 + 20C for 30 minutes. perature in a des
34、iccator and weighT oxide) as follows: Ignite over a burner at low heat Cool to room temperature, add 1 ml of Cool to room tem- Calculate the percent ash (as sodium Percent ash = 4,360 A W (100 - B) where: A = Weight of ash in grams, B = Percent volatile matter (see 4.2.4.1), and W = Weight of specim
35、en in grams. 4.2.4.4 Absolute viscosity. (a) Preparation of solution. wide-mouth Erlenmeyer flask equipped with a stirrer. (on a dry basis) of the specimen to the water in the flask with sufficyent agitation to prevent the specimen from forming an agglomerated mass. Heat the solution to 90C with con
36、tinued gentle agitation for at least 1 hour until the specimen is completely dissolved. content by measuring duplicate amounts of about 10 ml each into separate tared aluminum foil or moisture dishes (approximately 58 mm in diameter and 18 mm in depth) that were previously dried by heating and coole
37、d in a desiccator. After obtaining the solution weight to the nearest 0.01 g, dry in an oven at 105 to llOC to constant weight, cooling to room temperature in a desiccator prior to each weighing. Calculate the percent solids as follows: Add 300 ml of water to a tared 500-1111 Slowly add 15.0 + 0.1 g
38、 Cool the solution and determine the solids Percent solids = 100 W P where: W = Weight of solids after drying in grams, and P = Weight of solution in grams. Prepare a 4.0-percent solution by appropriate dilution of 200 g.of the solution prepared above. (b) Procedure. Determine the viscosity of the 4
39、.0-percent solution prepared in (a) at 2OoC in accordance with ASTM D445, by employing a No. 300 Ostwald type Cannon-Fenske viscometer that has a calibrated instrument constant. pipet that was filled by drawing up the solution through a clean piece of cotton held over the bottom tip. at 20.0 + O.lC,
40、 and measure the flow time through the viscometer capillary at least twice to obtain agreement of results. Determine the density of the solu- tion at the same temperature as the viscosity to the nearest 0.001 g per cubic centimeter with a hydrometer or other applicable method. grams per milliliter a
41、re numerically equal.) Fill the viscometer by transferring 10 ml of solution from a 10-1111 Mount the viscometer in a thermostated bath (Density values in 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-! (c) Calculation. Calculate the kinematic vi
42、scosity in centistokes Calculate the absolute from the measured flow time as specified in ASTM D445. (dynamic) viscosity in centipoise6 from the kinematic viscosity as specified in ASTM D445. 4.2.4.5 Water insoluble matter. Adjust the pH of 50 g of the 4.0-percent solution prepared in 4.2.4.4(a,) so
43、 that is is just alkaline to phenolphthalein. Dilute with 450 ml of water. screen, and wash the residue after filtration with three separate 50-ml por- tions of water. cooling in a desiccator to room temperature prior to each weighing. the percent water insoluble matter as follows: Filter the soluti
44、on through a tared No. 100 meah Dry the screen in an oven at 105“ to llOC to constant weight, Calculate Percent water insoluble matter = 50 (A - B) where: A = Weight of screen and residue after drying in grams, and B = Weight of screen in grams. . 4.2.4.6 pH of 4.0-percent solution. Determine the pH
45、, to the nearest tenth, of the 4.0-percent solution prepared in 4.2.4.4(a) , using a suitable pH ineter and electrode compensated for temperature change. 4.2.4.7 Particle size. (a) Class 1. Use sieves conforming to RR-S-366. Nest a No. 10 sieve on top of a No. 20 sieve and place a receiving pan on t
46、he bottom. 100.0 g of the specimen on the top sieve, cover, and place in a mechanical shaker geared to produce 300 + 20 gyrations and 150 + 10 taps of the striker per minute. Shake for 15 mintes, weigh the specimen retained on each sieve and on the bottom pan and calculate the percent specimen passi
47、ng through each sieve. Place (b) Class 2. Determine percent passing as specified in (a) except use a No. 80 sieve conforming to RR-S-366 instead of the No. 10 and No. 20 sieves. 4.2.5 Container leakage test. Place the sample drum on its side and roll it Open the a distance of approximately 2 meters
48、forwards and 2 meters backwards. drum and examine the bag liner for evidence of leakage (sifting of contents from the bag). 5. PACKAGING 5.1 Unit packing. Unit packing shall be level A, B, or commercial as speci- fied (see 6.2). 5.1.1 Level A. A quantity of 45.4 (+ 0.5 or -0) kilograms of polyvinyl
49、alcohol shall be unit packed in a removable head steel drum furnished with a bag liner. The drum shall conform to Uniform Freight Classification (UFC) Rule 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-265 C ( EA) 40, and its exterior shall be coated as specified for the steel drums of PPP-D-729. to NIL-B-117, type I, class E, style optional. The bag s
