ASTM C910-16 (R2021) pdf free download.Standard Test Method for Bond and Cohesion of One-Part Elastomeric Solvent Release-Type Sealants.
1.1 This test method determines the bond and cohesion of one-part. elastomeric, solvent release-type sealants after high- and low-temperature aging.
1.2 The subcommittee with jurisdiction is not aware of any similar ISO standard.
3. Terminology
3.1 Definitions—Refer to Terminology C717 for definitions of the following terms used in this test method: elastomer, elastomeric, sealant, standard conditions, solvent-release sealant.
4. Apparatus
4. 1 Extension Machine, as shown in Fig. 1. so designed that the test specimen can be automatically extended at a constant rate of 3.18 mm (½ in.)/h from a joint width of 12.7 mm (½ in.) to 14.29 mm (16 in.) at —23 ± 3 °C (—10 ± 5 °F).
4.2 Oven, forced-draft type, having temperature controlled at 70 ± 2 °C (158 ± 3.6 °F). See Specification E145.
4.3 Oven, convection type. having temperature controlled at 50 ± 1 °C (122 ± 2°F).
4.4 Freezer Chest or (“old Box, having temperature controlled at —23 ± 3 °C (—10 ± 5 °F).
4.5 Mortar Blocks, six, prepared as described in Test Methods Dl 191, except that the blocks shall be approximately 25.4 mm (1 in.) wide by 76.2 mm (3 in.) long by 25.4 mm (1 in.) thick and surfaced by wet grinding on an iron lap with No. 60 silicon carbide or a1uiiinurn oxide grain.
4.6 Plates, six, of water-white polished tloat or plate glass approximately 25.4mm (1 in.) wide by 76.2 mm (3 in.) long by 6.35 mm (¼ in.) thick.
4.7 Aluminum Alloy Plates, six, 6063—T5 or 6061 —T6 clear anodized a minimum of 20 mm over a scale-free finish, approximately 25.4 mm (1 in.) wide by 76.2 mm (3 in.) long by 6.35 mm (1/4 in.) thick.
7.2 Precondition the unopcned containers of sealant at standard conditions for a minimum of 24 h.
7.3 Prepare three test specimens for each substrate to be tested, as follows: Using the polyethylene spacer bars to control the joint dimensions, form a bead of sealant 1 2.7 mm (½ in.) wide by 12.7 mm (½ in.) thick by 50.8 mm (2 in.) long between the parallel 25.4 mm (1 in.) by 76.2 mm (3 in.) long faces of two similar blocks or plates.
7.4 Condition these specimens by allowing them to set for
24 h at standard conditions, then drying them in a convection oven for 7 days at 50 ± 1 °C (122 ± 2 °F).
7.5 Place the specimens in freezer for 24 h at —23 ± 3 °C (—10 ± 5 °F). Dislodge spacer bars from sealant, but do not remove spacer bars from assembled specimens.
7.6 Remove specimens from the freezer and condition them for I h at standard conditions.
7.7 Place the specimens in a forced-draft oven for 7 days at
70 ± 2 °C (158 ± 3.6 °F).
7.8 Remove the specimens from the oven. Place them in a freezer for 24h at —23 ± 3 °C (—10 ± 5 °F).ASTM C910 pdf download.