ARMY A-A-59719-2003 100 PERCENT POLYURETHANE SPRAYED ON LININGS《百分之百的聚氨酯喷涂内衬》.pdf
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1、INCH-POUND A-A-59719 April 14, 2003 COMMERCIAL ITEM DESCRIPTION 100% POLYURETHANE SPRAYED ON LININGS The General Services Administration has authorized the use of this commercial item description, for all federal agencies. 1. SCOPE. This commercial item description (CID) covers a two-component polyu
2、rethane lining used in protecting profiled, cleaned and primed (when required) wood, concrete, rigid plastic, fiberglass, elastomeric plastic and metal substrates. The polyurethane coating is intended for protection against abrasion, stone pecking, impact, corrosion, vibration and sound emission. 2.
3、 SALIENT CHARACTERISTICS. 2.1 Materials. Materials shall be in accordance with the manufacturers material specifications for sprayable polyurethane lining. The use of recovered material made in compliance with regulatory requirements is acceptable providing that all requirements of this CID are met
4、(see 4). 2.1.1 Materials deteriation, prevention and control. The material shall be a sprayable polyurethane, consisting of two liquid components, both of which are 100 percent (%) solids and combine to form a 100% solids lining. 2.1.2 Polyurethane. The two liquid components, are 100% solids that cu
5、re through an exothermic reaction to form an elastomeric sprayed on polyurethane lining which shall meet the zero volatile organic compound requirement and be compatible with the chemical agent resistant coating (CARC) primers and top coats per Army Drawing 12369000 (see 6.1.6 and 2.1.2.5). 2.1.2.1
6、Resin component. The material shall be polyether-based resin blend. Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent by letter to: U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-E/ESA, 6501 E.
7、 11 Mile Road, Warren, MI 48397-5000. AMSC N/A FSC 8030 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59719 2 2.1.2.1.1 Characteristics of the resin component. Th
8、e characteristics of the polyether-based resin component shall be established by the following: a. 100% solids, liquid resin b. 8.5 pounds (lb), weight per gallon (gal) (1.02 kilograms (kg) per liter (L) c. 750 centipoise 77 degrees Fahrenheit (F), (750 millipascal (mPa) 25 degrees Celsius (C) d. Po
9、lyether polyol-based 2.1.2.2 Isocyanate component. The material shall be 4,4 diphenylmethane diisocyanate-based. 2.1.2.2.1 Characteristics of the isocyanate component. The characteristics of the diphenylmethane diisocyanate-based isocyanate component shall be established by the following: a. 100% so
10、lids, liquid isocyanate b. 10 lb weight per gal (1.20 kg/L) c. 195 centipoise 77 F, (195 mPa 25 C) d. 4,4-diphenylmethane diisocyanate 2.1.2.3 Characteristics of the mixed components. The characteristics of the mixed components of 2.1.2.1.1 and 2.1.2.2.1 (tolerance ranges) shall be established by th
11、e following (see 6.1.3): a. Hardness, Shore A 90 - 95 ASTM D2240 b. Tensile Strength, pounds per square inch (psi) 2700 - 2900 ASTM D412 c. Elongation (%) 376 - 400 ASTM D412 d. Flexural Modulus (psi) 5600 - 6400 ASTM D790 e. Tabor Abrasion, (mg) of loss/1000 cycles CS17 wheel 10 - 15 ASTM D1044 f.
12、Tear Resistance, Die C, pound feet per inch (lb-ft/in.) 140 - 150 ASTM D624 g. Ross Flex, % crack growth /50 000 cycles 0 ASTM D1052 h. Water Absorption, % 1.6 ASTM D570 i. 20-25 second tack free time at 77 F (25 C) j. Minimum dry film thickness of 1/16 inch (in.) (0.1587 centimeter (cm) k. Maximum
13、dry film thickness is unlimited l. Mixed cured components classified as inert, no danger to the environment Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59719 3 2.1.2.4 Optional additives. The sprayed on polyurethane shall allow for the additi
14、on of sand, garnet, quartz, slags, rubber granules and other aggregates for non-skid performance broadcast throughout the profile of the lining or limited to the top surface. 2.1.2.5 Color. The sprayed on polyurethane lining shall be able to be pigmented to any color requested as defined by FED-STD-
15、595 (see 2.1.2 and 6.1.2). 2.1.2.6 Flame resistance. The sprayed on polyurethane lining shall pass the Federal Motor Vehicle Safety Standards and Regulations (FMVSSR), Standard No. 302, motor vehicle burn test with self-extinguishing (SE) rating (see 6.1.7). 2.2 Configuration. The coating compositio
16、n shall be applied by spraying and be compatible with CARC primers and top coats per Army Drawing 12369000 (see 6.1.6). 2.3 Performance. Unless otherwise specified (see 6.3), the performance of the sprayed on polyurethane lining shall be verified by the following. 2.3.1 Adhesion. The pull-off adhesi
17、on after ultra violet (UV) exposure, shall be greater than 4079 psi (286.5 kg per square centimeter (cm2 ) (see ASTM D4541). UV exposure shall not be detrimental to the basic coating material. Cross-cut adhesion shall have a rating of 5 over steel and aluminum as measured in accordance with ASTM D33
18、59, Methods A and B. 2.3.2 Flexibility. The flexural modulus shall meet 5600 - 6400 psi (393.7 - 450 kg/cm2 ) when tested in accordance with ASTM D790. The elongation shall meet 376 - 400% when tested in accordance with ASTM D412. 2.3.3 GM9540P Accelerated Corrosion Testing. Testing shall be conduct
19、ed for a period of more than 40 cycles, with 8 cycles being equivalent to one year of “real world“ exposure in this environment. After 40 cycles, the coating shall have a corrosion rating of 10 when applied to steel and a corrosion rating of 10 when applied to aluminum (see 6.1.5). 2.3.4 Appearance.
20、 The cured coating shall have uniform texture, free of sags, pits, holidays or blisters. 2.3.5 Operational temperature range. The operational temperature range required shall be -40 to +180 F (-40 to +82.2 C) for continual exposure and shall exhibit the typical physical properties (see 2.1.2.3). An
21、operational range of -55 to +220 F (-48.3 to +104.4 C) for short, spike, intermittent exposures of 60 seconds shall be acceptable. 2.3.6 Dimensional stability (maximum shrinkage). The maximum shrinkage shall be 1% in total. Provided by IHSNot for ResaleNo reproduction or networking permitted without
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