1、- 7 flIL-A-A5qqS bA 9999906 0123635 5 MI L-A-854 95 (As ) 6 October 1981 MI LI TARY SPEC1 FI CATI ON u - 1s- ZJ ANTIOXIDANT, T-BUTYLPHENOL TYPE, 2, 2-METHYLENEBIS (4-METHY L-6-t-BUTYLPHENOL) This specification is approved for use by the Naval Air Systems Comnand, Department of the Navy, and is avail
2、able for use by all Departments and Agencies of the Department of Defense. 1. SCOPE. 1.1 z- Scope. This specification establishes the requirements for an antfoxidant of the t-butylphenol type, 2, 2- methylenebis (4-methyl- 6-t-butyl phenol ) . 2. APPLICABLE DOCUMENTS. 2.1 Issues of documents. The fo
3、llowing documents of the issue in effect on date of invitation for.bids or request for proposal form a part of this specification to the extent specified herein. SPECIFICATIONS MI L ITARY MI L- C-854 98 Curing Agents, Dimeryl-di-isocyanate and Isophorone di -i socyanate STANDARDS M I L I TARY MIL-ST
4、D-129 Marking for Shipment and Storage. MI L-STD-1218 ACS Chemical s. - DRAWINGS Naval Air Systems Comand (Code Ident 30003) 639AS4616 Polybutadiene Polymer. Beneficial comments (recomnendations, additions, deletions) and any pertinent data which may be of use in improving this document should be ad
5、dressed to : Comnandi ng Off i Cer , Naval Air Engi neering Center, Engineering Specifications and Standards Department (ESSD) Code 93, Lakehurst, NJ 08733, by using the self-addressed Stan- dardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
6、Licensed by Information Handling ServicesMIL-A-5q95 b = 4779906 0323636 7 Property Min MIL-A-85495( AS) Max (Copies of specifications, standards, drawings, and pub1 ications required by contractors in connection with specified procurement functions should be obtained from the procuring activity or a
7、s directed by the contracting officer.) Isocyanate (NCO) uptake, Melting point range, (OC) (equivalent NCO/grams antioxidant) 3. REQUIREMENTS. - .O05 120 130 3.1 Product characteristics. The antioxidant covered by this specification shall be a pale cream to white color, and shall be a crystal 1 i ne
8、 powdery sol i d. 3.2 Chemical and physical properties. The chemical and physical properties of the antioxidant shall conform to Table I. TABLE I. Chemical and physical properties. I I I I 3.3 Toxic products and safety. Safety regulations and guidelines applicable to the use of antioxidant should be
9、 complied with to preclude personal injury and damage to equipment and facilities. 3.4 Workmanship. Workmanship shall be such that the antioxidant is uniform, of consistent high quality, and free from contamination. 4. QUALITY ASSURANCE PROVISIONS. 4.1 Responsibility for inspection. Unless otherwise
10、 specified in the contract or purchase order (see 6.2.1), the contractor shall be responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the contractor may utilize his own facilities or any commercial 1 aboratory acceptable to the Governmen
11、t. reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements. The Government ! c;) Licensed by Information Handling ServicesMIL-A-85495 68 9977706 0123637 9
12、MIL-A-85495(AS) Number of containers sampled (primary sample) 4.2 Sampling. The lot shall be sampled in accordance with Table II. Number of composite samples TABLE II. Sampling plan. Number of containers in lot 100 or more 51 - 99 11 - 50 1 - 10 10% (nearest who1 e number) 10 10 ALL 4.2.1 Primary sa
13、mples. Physical properties tests shall be run on each primary sample (see Table II). sampled by use of a clean glass tube, rod, or pipet. is small enough to be handled safely, the sample may be obtained by pouring. The smallest sample size possible that is consistent with test requirements shall be
14、taken. The minimum sample size shall be two ounces. Glass containers shall be used for all liquid samples. Each sample shall be labeled with date, lot number, and manufacturers container identification number. all of the physical-properties tests herein-shall result in rejection of the lot represent
15、ed. The material container may be If the container Failure of any primary sample to pass 4.2.2 Composite samples. Chemical properties tests shall be run on each composite sample. Divide the primaw samples equally into the number of composites shown in Table- II. Blend each compGite thoroughly by man
16、ipulation of the container. Label each composite with Roman numerals, also include date, lot numbers, and manufacturers container identification numbers. The remainder of the primary samples shall be retained pending acceptance,or rejection of the lot. Failure of any composite sample to pass all of
17、t.he chemical-properties tests herein shall result in rejection of the lot represented. c Licensed by Information Handling ServicesMIL-A-85V75 68 7799706 0123638 O = MIL-A-85495( AS) 4.3 Quality conformance inspections and tests. Acceptance inspections and tests shall consist of the following: a. b.
18、 Test of Table I properties (see 4.4). Inspection of filled containers (see 4.5.1). c. Visual inspection (see 4.5.2). 4,.4 Test methods. Tests shall be performed using apparatus, reagents, and procedures specified herein. or procedures shall require prior written approval of the procuring activity.
19、The use of alternate apparatus, reagents, . 4.4.1 NCO uptake. 4.4.1.1 Apparatus. a. Infrared spectrophotometer , Perki n-Elmer Model 21 , equipped with 1 .O mil 1 imeter (mm) sodium chloride (NaCl ) ce1 1 s , or equal. b. Absorbance chart paper, Perkin-Elmer No. 021-6313, or equal. c. Snap cap bottl
20、es, Wheaton, 6 or 10 dram, or equal. 4.4.1.2 Reagents. a. Polybutadine polymer (phenyl -beta-napthylamine removed) (Drawing 639AS4616). b. Isophorone di-isocyanate (IPDI) in accordance with MIL-C- 85498, Type II. . b c. Carbon tetrachl oride, spectrophotometry grade in accordance with MIL-STD-1218.
21、4.4.1.3 Determination of NCO uptake. Weigh accurately 0.1000 gram Ism) of sample, 2.5 gm of polybutadine polymer and 0.184 gm of IPDI in a snap cap bottle. Mix well and weigh accurately 0.35 gm of this solution into a 20-milliliter (ml) beaker. transfer quantitatively to a 25-1111 volumetric flask,
22、dilute to volume with carbon tetrachloride, and mix thoroughly. Prepare a blank in like manner. Measure the infrared absorbance at 2270 centimeters-1 in a 1.0 mm NaC1 cell for both the sample and blank. Place cap on both sample and blank solutions remaining in the initial bottle and place in 60 degr
23、ee Celsius (OC) oven for 3 days. absorbance of 0.35 gm of sample and blank in a 25-1111 volumetric flask with carbon tetrachloride as above. Using the initial and final absor- bance values, calculate the amount of NCO which has reacted with the sampl e. Dissolve in a few ml of carbon tetrachloride,
24、Again determine the infrared 4 4 .- e Licensed by Information Handling ServicesMIL-A-85475 68 7979906 0323637 2 MIL-A-85495( AS) Cal cul ation: W1xFxA NCO uptake, (equivalent = NCO/gm antioxidant) w Where: W1 = weight of IPDI, gm F = 0.8975 equivalent NC0/100 gm IPDI = 0.008975 W = weight of antioxi
25、dant, gm Al = absorbance of sample at O time A2 = absorbance of sample after 3 days A3 = absorbance of blank at O time A4 = absorbance of blank after 3 days Report the NCO uptake to the nearest 0.0001 equivalent NCO/gm antioxidant. 4.4.2 Melting point range. 4.4.2.1 Apparatus. a. Idel ting point app
26、aratus, filled with mineral oil, or equal. b. Melting point capillary tubes, 100 mn by 1.5 to 2.0 m. c. Thermometer, O to 150C, or equal, graduated in 0.1“C. 4.4.2.2 Determination of melting point range. Collect a small amount of sample in the open end of a capillary melting tube. into about 3 mm of
27、 the capillary tube, of the expected melting point. with the sample adjacent to the mercury bulb and lower the assembly into the melting point apparatus until the thermometer bulb is below the side arm. melting occurs. Adjust heating so that the temperature rise .is approxi- mately 1C per minute whe
28、n approaching the melting point. Record the temperature when the sample first begins to melt and again when the sample has completely melted. Report the melting point range as these two temperatures to the nearest 0.1“C for each. Pack the sample Preheat the batch to within 3C Attach the capillary to
29、 the thermometer The liquid level of the batch should be near the 0C mark when 5 Licensed by Information Handling ServicesMIL-A-5475 68 7777706 0123640 7 m MIL-A-85495( AS) 4.5 Exami na t i ons . 4.5.1 Inspection of filled containers. All filled containers shall be inspected prior to shipment or use
30、 for accuracy or markings and for defects in containers and closures. All defective container; and closures shall be repaired or replaced, and contents therein shall be reinspected prior to shipment or use. 4.5.2 Visual inspection. All samples shall be visually inspected to 4.6 Records. Certificatio
31、n and test data shall be prepared as 5. PACKAGING. determine conformance to the requirements of 3.4. required by the procuring activity (see 6.2.21. 5.1 Packaging and packing. Unless otherwise specified in the contract or purchase order (see 6.2.1 1, packaging and packing of the antioxidant shall be
32、 in accordance with commercial practice to insure carrier accep- tance and shall be of such construction and materials that the contents will be adequately protected against loss or contamination. 5.2 Container marking. Unless otherwise specified in the contract or purchase order (see 6.2.1), each s
33、hipping container shall be marked in accordance with the requirements of MIL-STD-129. shall include the following: Container marking a. The suppliers lot number. b. Procuring activity purchase order number. c. Contai ner i denti f i cati on number (appl i ed in numeri cal sequence as the containers
34、are filled). d. Date of manufacture. e. Manufacturers Code Ident. f. Net and tare weight of the container. g. Material identification. 6. NOTES AND CONCLUDING MATERIAL. 6.1 Intended use. The intended use of the material described herein is to prevent oxidatton of liquid polymers. 6.2 Ordering data.
35、6.2.1 Procurement requirements. Procurement documents should specify the following: ? 6 -i ”) Licensed by Information Handling ServicesMIL-A-85475 68 m 7777706 OL23641 O m - MI L-4-85495 (AS) a. Title, number and date of this specification. c. Special packaging, packing, or shipping requirements, if
36、 applicable (see Section 5). 6.2.2 Data requirements. When this specification is used in a pro- curement which incorporates a Contract Data Requirements List (DD Form 1423) and invokes the provisions of 7-104.9(n of the Defense Acquisi- tion Regulations (DAR), the data requirements identified below
37、will be developed as specified by an approved Data Item Description (DID) (DD Form 1664) and delivered in accordance with the approved DD Form 1423 Tncorporated into the contract. When the provisions of DAR-7-104.9(n) are not invoked, the data specified below will be delivered by the contractor in a
38、ccordance with the contract requirements. Deliverable data required by this specification is cited in the following paragraphs: Appl i ca bl e DID Pa rag rap h Data Requirement 4.6 . Certification UDI-A-23264B Test data DI -T-4024 (Copies of DIDs required by the contractors in connection with specif
39、ic procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 6.3 Definitions. 6.3.1 - Lot. At place of manufacture, a lot consists of antioxidant from one manufacturers batch or blend, or if manufactured by a con- tinuous process, any quantity o
40、f material made from homogeneous raw materials and during a period of uninterrupted operations. -At place of received in a single shipment. single shipment at the option of the procuring activity. ments of this specification in past procurement actions is marketed by herican Cyanamid Company, Code I
41、dent 89457, as Antioxidant 2246R. This information is for the convenience of the procuring activity and is not to be construed as a waiver of any requirement of this specification nor as any limitation of additional potential sources of supply. i delivery, a lot consists of antioxidant from one manufacturers lot Partial shipment may be considered a A product that has met the require- 6.4 Suggested source of, supply. -. Preparing activity: (Project 681 0-NB21 ) Navy - AS *US. GOVERNMENT PRINTING OFFICE: 1981-505-022/8507 7 Licensed by Information Handling Services
