46 Shipping 6 2013-10-01 2013-10-01 false Acceptance criteria. 164.120-7 Section 164.120-7 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL MATERIALS Fire Retardant Resins for Lifeboats and Rescue Boats
§ 164.120-7 Acceptance criteria.

(a) The laminating resin must pass the inspections and tests specified in this section. The inspections and tests required by this section, including weathering of samples, are the responsibility of the manufacturer and must be performed by an independent laboratory.

(1) Polyester resins. (i) The resin must meet the specifications of Grade A, Class O resin of MIL-R-7575C (incorporated by reference, see § 164.120-5 of this subpart) and meet the specifications conforming to Grade A (standard flame resistance) of MIL-R-21607E(SH) (incorporated by reference, see § 164.120-5 of this subpart).

(ii) MIL-R-21607E(SH) Grade B resins will be given consideration upon request.

(2) Vinyl ester resins. The resin must meet the specifications of Grade B (fire retardant) resin of MIL-R-24719(SH) (incorporated by reference, see § 164.120-5 of this subpart) and must be tested and meet the requirements of weathering and post-weathering mechanical testing as shown in Table 164.120-7 of this section. Samples for the weathering must be prepared in accordance with MIL-R-7575C paragraph 4.3.1.1.

(3) All other resins. Each resin formulation submitted for Coast Guard approval, other than those addressed in paragraphs (a)(1) and (2) of this section, must be tested and meet the requirements of Table 164.120-7 of this section.

(b) [Reserved]

Table 164.120-7—Alternative Test Method Standards for Laminating Resins for Use in Lifeboats, Rescue Boats, and Other Lifesaving Equipment 1 Property Test methods (c) Material Identification Tests 2 (1) Uncatalyzed Liquid Resin: (i) Specific gravity ISO 1675 or ASTM D 1045. (ii) Viscosity ISO 2555 or ASTM D 1824. (iii) Acid number ISO 2114 or ASTM D 1045. (2) Catalyzed Resin: (i) Max gel time ISO 2535 or ASTM D 2471. (ii) Peak exotherm ASTM D 2471. (3) Cured Unfilled Resin: (i) Barcol hardness ISO 2039-2 or ASTM D 2583. (ii) Specific gravity/density ISO 1183 or ASTM D 792. Property Test method Requirements 3 (d) Lengthwise Mechanical & Physical Properties of Glass Cloth Base Plastic Laminate (Lengthwise direction of test specimens is parallel to the warp direction of glass fabric.) (1) Tested Under Standard Conditions: (i) Ultimate strength, flatwise ISO 14125 or ASTM D 790 345 MPa (50,000 lb/in2). (ii) Initial modulus of elasticity, flatwise ISO 14125 or ASTM D 790 18,616 MPa (2.7 × 10E6 lb/in2). (iii) Ultimate tensile strength ISO 527 or ASTM D 638 278 MPa (40,000 lb/in2). (iv) Ultimate compressive strength, edgewise ISO 604 or ASTM D 695 241 MPa (35,000 ln/in2). (v) Fire retardant MSC Circ. 1006 Pass. (vi) Water absorption, 24-hour immersion ISO 62 or ASTM D 570 0.5% max change in weight. (vii) Barcol hardness ISO 2039-2 or ASTM D 2583 55. (viii) Specific gravity/density ISO 1183 or ASTM D 792 (2). (ix) Resin content, percentage ISO 1172 or ASTM D 2584 (2). (2) Tested Under Wet Conditions (Specimens must be immersed for 2 hours in boiling distilled water as per ASTM D 570 paragraph 7.5. The specimens must then be cooled in water at 23 °C and tested wet at standard conditions immediately after removal from the water.): (i) Ultimate strength, flatwise ISO 14125 or ASTM D 790 310 MPa (45,000 lb/in2). (ii) Initial modulus of elasticity, flatwise ISO 14125 or ASTM D 790 17,237 MPa (2.5 × 10E6 lb/in2). (iii) Ultimate tensile strength ISO 527 or ASTM D 638 278 MPa (40,000 lb/in2). (iv) Ultimate compressive strength, edgewise ISO 604 or ASTM D 695 241 MPa (35,000 ln/in2). (3) Tested Under Elevated Temperature Conditions (Specimens must be exposed to 70 °C for 1 hour and tested at that temperature.): (i) Ultimate strength, flatwise ISO 14125 or ASTM D 790 276 MPa (40,000 lb/in2). (ii) Initial modulus of elasticity, flatwise ISO 14125 or ASTM D 790 15,858 MPa (2.3 × 10E6 lb/in2). (4) Tested After Exposure to Liquid Chemicals (Standard test chemical reagents.) (i) Change in mass & dimensions ISO 175 or ASTM D 543 0.1% max. (ii) Ultimate strength ISO 14125 or ASTM D 790 (2). (5) Tested After Weathering (Specimens must be weathered by either: 1 year per MIL-R-7575C or 500-hour exposure per ASTM G154 Table X2.1 Cycle 1 or 3.): (i) Ultimate strength, flatwise ISO 14125 or ASTM D 790 310 MPa (45,000 lb/in2). (ii) Initial modulus of elasticity, flatwise ISO 14125 or ASTM D 790 17,237 MPa (2.5 × 10E6 lb/in2). (iii) Fire retardant MSC Circ. 1006 Pass. 1 Each standard in this table is incorporated by reference, see § 164.120-5 of this subpart. 2 There are no requirements for these properties, but the values must be determined and reported. Calculations for ultimate flexural strength after immersion in chemical fluids must be based on the dimensions of the specimens before immersion. 3 The specimens must show no cracking, crazing, softening, delamination, or any other visible deterioration after conditioning exposure or immersions.