1、MIL-A-24179A(SHIPS) SUPERSEDXNG 15 May 1969 MIL-A-24179 (SHIPS) 18 October 1965 (see 6.5) MILITARY SPECIFICATION ADHESIVE, FLEXIBLE UNICELLULAR-PLASTIC THERMAL INSULATION 1. SCOPE contact type adhesives for bonding flexible unicellular-plastic thermal insulation to and to metal surfaces. 1.1 Scope.
2、This specification covers high initial strength, heat and water resi, stant , itself types and classes, as specified (see 6.2) : 1.2 Classification. Adhesives covered by this specification shall be of the following % Type I - Dispersed in water. Type II - Dispersed in non-halogenated organic solvent
3、. Class 1 - Low Flash Point. Class 2 - Intermediate Flash Point. Type III - Dispersed in non-flammable organic solvent. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or requests for proposal form a part of this specification to the extent s
4、pecified herein. SPECIFICATIONS FEDERAL TT-P-645 - Primer, Paint, Zinc-Chromate, Alkyd Type. MILITARY MIL-P-15280 - Plastic laterial, Unicellular (Sheets and Tubes). STANDA-WS FEDERAL F FED-STD-141 - Paint, Varnish, Lacquer, and Related Materials; Method of In- FED-STD-601 - Rubber: Sampling and Tes
5、ting. spection, sampling and Testinq. MILITARY MIL-STD-129 - Marking for Shipment and Storage. in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) vitation for bids or request for proposal shall apply. the exten
6、tzi!ied herein. Unless otherwise indicated, the issue in effect on date of in- (Copies of specifications, standards , drawings, and publications required by suppliers 2.2 Other ublications. The following documents form a part of this specification to UNIFORM CLASSIFICATION COMMITTEE Uniform Freight
7、Classification Rules 202 Union Station, 516 Nest Jackson Blvd., Chicago, Illinois 60606. (Application for copies should be addressed to the Uniform Classification Committee, DEPARTMENT OF TRANSPORTATION Title 49, Parts 171-178 - Interstate Commerce Commission Rules and Regulations for Transportation
8、 of Explosives and Other Dangerous Articles. Office, Washington, D.C. 20402.) (Copies may be obtained from the superintendent of Docments, Government Printing ,. / FSC 8040 FSC 8040 . . THIS DOCUMENT CONTAINS / / PAGES TL. - -:. Provided by IHSNot for ResaleNo reproduction or networking permitted wi
9、thout license from IHS-,-,-MIL-A-Z4179A(SHIPS) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D-1084 - Tests for Consistency of Adhesives. _* Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103.) (Application for copies should be addressed to the American Society for Testing and MANUFAC
10、TURING CHEMISTS ASSOCIATION MANUAL L-1 Warning Labels. Street, N.W., Washington, D. C. 20006.) (Copies may be obtained from the Manufacturing Chemists Association, Inc., 1625 Eye available for reference from libraries, They are also distributed among technical groups and using Federal agencies.) (Te
11、chnical Society and Technical Association Specifications and Standards are generally 3. REQUIREMENTS 3.1 Qualification. Adhesives furnished under this specification shall be products which are qualified for listing on the applicable qualified products list at the time set for opening of bids (see 4.
12、2 and 6.3). solved in volatile organic solvents. The dispersion or solution shall be free from grit, persed. The adhesive shall not adversely affect, initially or in service, the plastic insu- lumps, skin, gel, and contaminants and shall not form sediment which cannot be readily dis- lation to which
13、 it is applied. 3.2 Material. The adhesive shall be dispersed in an aqueous medium or shall be dis- shall have dtionable odor and shall not contain any benzene or carbon tetrachloride, 3.2.1 Toxicit . Any solvent, dispersing medium, or volatile component of the adhesive when the adhesive is heated t
14、o any temperature up to 100C (212OF.). The dried adhesive shall not emit nauseaus, irritating, or toxic volatile matter or aerosols 3.2.2 Dispersinq medium or solvent, # 3.2.2.1 Tm I adhesive. The dispersing medium shall contain no chlorine or other halogen (see 4.5.2); The adhesive shalI not have a
15、 flash point below 6OOC. (140OF.) or a fire point below 75OC. (167OF.I when tested in accordance with 4.5.3. # 3.2.2.2 Tpe II adhesive. The solvent shall contain no chlorine or other halogen (see 4.5.2). 3.2.2.2.1 Class 1. The adhesive shall have a flash point below minus 3.9OC. (25OF.I. 3.2.2.2.2 C
16、lass 2. The adhesive shall not have a flash point below 15.6OC. (60OF.). The flash point shall be determined as specified in 4.5-3. a (ZOOOF.) when testenn accordance with 4.5.3. 3.2.2.3 Type III adhesive. The adhesive shall not have a fire point below 93.3C. 3.3 A lication re uirement. The adhesive
17、 shall be suitable or application by brush or roller w-hnt, except for stirring. A one-coat application to both requirements specified herein. the insulation and to the primed metal surfaces shall be sufficient to meet all the other 3.4 Sforage life. The adhesive, as furnished by the supplier, shall
18、 meet all require- 3.5 Physical requirements. The adhesive shall conform to the requirements of table I. ments of this specmation after storage for one year, when tested as specified in 4.5.4. Table I - Physical requirements. * Property Requirement Method Test Tensional adhesion -I 1 Under load of 1
19、0 pounds per square foot at 37.8C(1000F) for 168 hours in air. Sus tain load 4.5.5 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Property Under load of 10 pounds per square foot at 71.1OC (160F) for 24 hours in air. Under load of 10 pounds per sq
20、uare foot at -6.70C(20F) for 24 hours in air. Under load of 10 pounds per square foot at 37.8OC (100OF) for 168 hours in dis- tilled water. Tensile strength of cemented joints (Type II and III only) After accelerated aging, psi, minimum Immediate, psi minimum Thermal shrinkage displacement of bonded
21、 insulation at primed steel interface Viscosity, range, centipoises Corrosive Effect Requirement Sus tain load Sustain load Sustain load 30 20 No displacement of insulation 200 to 3,000 No corrosion of steel Method Test 4.5.5 4.5.5 4.5.5 4.5.6 4.5.6.2 4.5.6.3 4.5.7 4.5.8 4.5.9 L Tensional adhesion b
22、etween insulation and primed steel shall be conducted in sequence on the same specimens. 3.6 Volume of adhesive. The volume of the adhesive shall not differ by more than 3.0 percenw =e volume marked on the container when determined in accordance with 4.5.10. B shall be marked to provide the followin
23、g information: specification number, and volume of adhesive in container. Instructions for use shall .cover application procedure, includina 3.7 Identification markings and instructions for use. Each container of adhesive recommended film thickness and expected coverage for the unit container, air d
24、;ying time- ommended storage temperature and expected life,. method of cleaning equipment, safety precau- for given temperature and humidity, open time of adhesive coated material after drying, rec- tions and any other information required for proper use. Use of manufacturers commercial label shall
25、be permitted, provided the aforementioned information is provided. The sides of Containers of Type I material shall also be marked “Prevent From Freezing“. all containers, including shipping containers shall be marked “Store In A Cool Place“. f shipping containers for hazardous chemicals shall carry
26、 appropriate warning labels. Addi- 3.7.1 Hazardous chemicals. All interior unit and intermediate packages and exterior tional information required by the Department of Transportation Regulations, Title 49, Parts 171-178, and the Manufacturing Chemists Association Manual L-1 shall be included in the
27、marking on the container. packaged product. Occurence of defects shall not exceed the applicable rejection number (see 4.3.2). 3.8 Workmanship. Workmanship shall be of the quality necessary to insure a uniform 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specif
28、ied in the contract or ments as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspec- reserves the right to perform any of the inspections set forth in the specification where tion re
29、quirements specified herein, unless disapproved by the Government. The Government requirements. such inspections are deemed necessary to assure supplies and services conform to prescribed # purchase order, the supplier is responsible for the performance of all inspection require- satisfactory to the
30、 Naval-Shcp Engineering Center. Qualification tests shall conskt of the 4.2 Qualification tests. Qualification tests shall be conducted at a laboratory with “Provisions Governing Qualification SD-6“ I“;ee 6.3 and 6.3.1). tests specified in 4.5. Application for qual+.fication tests shall be made in a
31、ccordance Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-24179A(SHIPS) 4.3 Samplinq for gualitx conformance inspection. 300 gallons and shall consist of all the material.produced in one plant under essentially 4.3.1 Lot. For purposes of sampli
32、ng, examination and tests, a lot shall not exceed the same conditions and offered for delivery at one time. 4.3.2 Sam lin for examination of filled containers. Representative samples of filled containers shal! betzn at random fzmeachlot in accordance with the sampling plan given in table II for the
33、examinations specified in 4.4.1. Table II - Sampling for examination. I Number of Number of containers containers Number of defective containers filled filled Major defects Total defects in lot to be sampled Acceptance i number number up to 8 all O O 1 3 3 I 5 10 9 to 90 5 i O 91 to 280 13 i 1 20 28
34、1 to 500 501 to 1200 32 1201 to 3200 50 ! 2 5 i 1 materially the usability ?f the lot represented by the sample. 4.4.1 Examination. Each of the filled container sanlples, selected in accordance with Table III - List of defects. Examine I Containers Major Warninq markinq or labels not provided to pro
35、tect personnel Evidence of unit container leakage. Container metal thickness (cans only) not in accordance Container not type specified; not new. with established commercial practice for type of con- tainer. (a) Screw cap. (b) Multiple friction plug. (d) Tight head plug and vent. (c) Lug cover. Size
36、 (capacity) not as specified. Gasket missinq, not seated or damaged. Inner seal (metal friction type) not seated: damaged. Gaskets not of material compatible with the product Marking (as to content) not as specified, incomplete or Container coating (internal) not compatible with product from burns,
37、toxicity, asphyxiation, or explosion. Closure not the type specified: not tight. contained. illegible; damaqed. contained: external coating damaqed. 4 “-“ Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Examine Packing Shipping containers Shipping co
38、ntainers Table III - List of defects (Continued) Major Product containers not all of same type and capacity. Arrangement of product containers not as specified. Separators, buffer-pads, cell spacers not as specified; Commercial packing (level C) (when specified) not con- closures, handles, or bails
39、not protected. sure safe delivery at destination. forming to carriers rules and regulations; does not in- Not conforming to the applicable specification; damaged. Closing and strapping (level A) not as specified. Not filled. Reinforcing tape (fiber boxes) (when used) not applied Steel strappiny not
40、the type specified. Palletized unit loads (when authorized for pails and Closing of class 1 fiber boxes (level B packing) (when as specified; not type of tape specified. drums) not palletized as specified. specified by Army) not accomplished as specified. Minor Dents, scratches, not clean. Evidence
41、of rust or corrosion. Closures damaged (burrs , sharp edges). Bail or handle missing or damaged. Bail grip damaged. Marking of intermediate container incorrect, Marking of shipping container incorrect, incomplete, incomplete, not legible. not legible. be subjected to the Following teztr 4.4.2 Qualit
42、y conformance tests. The samules selected in accordance with 4.3.3 shall T& Test Paragraph - Flash Point (Types I and II only) Halogens (Types I and II only) 4.5.2 Fire Point (Type II only) 4.5.3 Tensional adhesion (37.8OC only) 4.5.3 Tensile strength, immediate (Types II and III only) 4.5.5.2 Visco
43、sity 4.5.6.2 Volume 4.5.8 4.5.10 II 4.4.2.1 Action in case of nonconformance. If a sample tested is found not to be in conformance withthe j?qGmts of this specification, this shall be cause for rejection of the lot which it represents. 4.5 Test methods. conform to th-irements of MIL-P-15280, type II
44、. Unless otherwise specified (see 6.21, 4.5.1 Plastic insulation. The plastic insulation used for testing the adhesive shall the insulation thickness shall be nominally one inch. 4.5.2 Presence of halogenated material dispersin2 medium or solvent.&/ # a clean, wide-mouth one half pint can with the a
45、dhesive. Seal the can immediately and store 4.5.2.1 Test. The adhesive shall be well stirred. Brush coat the inside, bottom of for 24 5 1/4 hours at 25O 5 1.2“C (77 5 2F). After 24 hours, remove the lid and immedi- dicates the presence of a halogen in the tested material. If a green or blue color is
46、 not ately sample the head space vapors with a halide leak detect0r.y A greenblue flame in- obtained, the material is considered to be free of halogenated hydrocarbons. i/ This test will not indicate: the presence of the halogen, fluorine. 2 Bernz-O-Matic Leak Detector, Model No. TX-3, or A Turner H
47、alide Gas Leak Detector, Model LP777, or Equivalent. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-24179A (SHIPS) 4.5.2.2 Confirmator tests. Since a positive test for chlorine or other halogen may be due to the presence ofYthfelements in th
48、e polymer, but not in the dispersing medium or solvent, it is necessary to confirm their presence in the latter materials. in a covered glass container shall be frozen. After freezing, the container shall be allowed 4.5.2.2.1 Confirmatory tests (type I only). Thirty milliliters (ml) of type I adhesi
49、ve to stand at ambient temperature for not less than 16 hours to completely melt the contents. The coagulated material shall then be separated from the liquid. The latter shall be tested for the presence of halogen (see 4.5.2.1). from 100 ml of type II adhZ5.K Clean glasswire shall be used for the still, condenser, and receiver. Care must be taken to prevent foaming over of the adhesive. All of the dis- halogen (see 4.5.2.1) . tilled liquid shall be condensed.
