4 PrincipleA test portion of the latex concentrate is diluted to by mass total solids content and stirred at high speed.The time required to initiate visible flocculation is recorded, this being regarded as a measure of the mechanical stability.5 ReagentsThe ammonia solutions (5.1 and 5.2) shall be prepared from ammonium hydroxide of recognized analytical reagent…
Apparatus4.1 Balance—An analytical balance capable of reading 0.0001 g.4.2 Oven, capable of maintaining uniform temperatures of 50 ± 3°C [122 ± 5.4°F] and of 105 to 110°C [221 to 230°F]. Test Specimen5.1 The test specimen for molded plastics shall be in the form of a disk 50.8 mm [2 in.] in diameter and 3.2 mm…
13.1 Test MeansTest means and the main test conditions are given in table 7. 13.2 Test conditions for first characteristic numerals 1, 2, 3, 4The object probe is pushed against any openings of the enclosure with the force specified in table 7. 13.3 Acceptance conditions for first characteristic numerals 1, 2, 3, 4The protection is…
AHP5748-174 test fixture meets ASTM D5748 requirements. ASTM D5748 is used for testing the puncture resistance of stretch wrap film. The fixture consists of a 19mm (0.75 in.) diameter, pear-shaped and clamping fixture having a 102 mm (4 in.) diameter opening and 200 mm depth. PUNCTURE FIXTURESto test geotextiles, plastic films, protective clothing, etc. according…
Apparatus5.1 The apparatus shall be constructed essentially as shown in Fig. 1, using the following components common to both test methods: 5.1.1 Dart Well—If the dart impact machine utilizes an enclosed dart well, it must contain a single unobstructed vent with a minimum area of 625 mm2 (~1 in.2 ) to provide adequate venting.NOTE 3—Some…
8.2.6 Maintain the temperature of the cooling water at 21 +- 2°C. Determine the temperature of the cooling water immediately after it leaves the test apparatus for each cooling plate. 8.2.7 If an electric chilling apparatus is used to control the cooling plate temperature, maintain the required temperature as noted in 8.2.6. Measure the temperature…
5 Apparatus5.1 Heating equipment, consisting of one of the following (5.1.1, 5.1.2 or 5.1.3) that will accept aminimum of two test frame assemblies and a cooling device (5.1.4).The heating equipment shall be provided with means of temperature control, enabling the temperatureto be raised at a uniform rate of (50 ± 5) K/h or (120 ±…
6.6 Preparation of test specimens to determine compliance with the requirements for creep, dimensional change and compressive strength6.6.1 TemperaturePrepare specimens at (23 +- 2) ºC, unless specified otherwise.6.6.2 MixingMix a mass of the amalgam sufficient to make a test cylinder (8 +- 1) mm high after condensation into the die shown in Figure 1. If…
6 Apparatus6.1 Blanking Die—A die suitable for cutting test specimens to the dimensions and tolerances shown in Fig. 1.NOTE 1—The length of the specimen can be changed to suit the design of the test apparatus. However, there should be a constant neck section with length at least 13 mm (0.5 in.) long. The width should…
