ASTMD

For the above polyol blend viscosity (Brookfield, ASTM D-2196) = 1500 mPa-S at 23° C. For the reaction mixture working (pot) life 20 min Gardner circular dry times [72°F, 54% relative humidity (RH)] surface dry = 1.0 h, hard dry = 2.0 h, mar free = 3.5 h. For the finished coating gloss (ASTM D-523) = 90+ at 60° impact (ASTM D-2794) = 60 in.-lb direct, 10 in.-lb reverse Tabor abrasion (ASTMD-4060,1000 g load, 1000cycles, CS-17 wheel) = 95.6 mg pendulum hardness = 180 s MEK double rubs (ASTM D4752-95, 50 double rubs) = softened. 

Standard cut points from ASTMD 2887 simulated distillation were used for liquid product yield calculation gasoline was defined as the C5-221°C fraction, light cycle oil (LCO) as the 221°C-343°C fraction and slurry oil as the 343°C fraction. Gasoline quality was determined by gas chromatography using PONA column and a variation of the methodology described by Anderson [1]. 

LCO quality was determined by two different methods. Before 2-D chromatography was available, liquid product aromatics were measured for all samples using a variation of the ASTMD 5186-96 method. A selected number of samples were cut between 221°C and 343°C using a TBP column to produce an LCO fraction for direct ASTMD 3747 cetane index determination. The cetane values of the LCO cuts were then correlated to the total liquid product aromatics (Figure 2.1) and the correlation was used to estimate the LCO quality of the other samples. 

Occasionally, cetane improvers are added to distillate fuel and are capable of increasing the cetane number of diesel fuel from 1 to 14 numbers. The reason for this range of response is due to the differences in the chemical nature of the fuel. Fuel containing a higher level of aromatic compounds will typically respond less effectively to cetane improver treatment than fuels with fewer aromatic compounds. Fuel cetane number determination is evaluated by a standardized engine method ASTMD-613. 

Look for increased amounts of high-molecular-weight, high-boiling-point components in fuel by ASTMD-86. High-... 

ASTMD 635, Standard Test Method for Rate of Burning and/or Extent and Time of Burning of Self-Supporting Plastics in a Horizontal Position, Annual Book ASTM Standards, American Society for Testing and Materials, West Conshohocken, PA. 

Epoxy equivalent weight. Via direct titration (ASTMD-1652). 

According to the Rossi-Picesa technique standardized in the USA by ASTMD 569-82, ( The Method of Measuring Flow Properties of Thermoplastic Molding Materials), the flowability of thermoreactive materials is determined by measuring the effort and time of flow in a vertical cylindrical channel of 3.18 0.013 mm diameter and 38 mm in length. Pressure on the material in the 25.4 mm diameter die amounts to 0.62 — 1.03 MPa. 

Flowability determinations on reactoplasts according to the method set out in ASTMD 31 23-72 (USA) involve the forming of a spiral of a specified cross-section. Use is made of a pressing machine for transfer pressing. The 20 0.1 g of the material is placed in a chamber 25.4 mm in diameter. Tests are carried out at 150 3 °C, at a pressure of 6.9 0.17 MPa, and a piston velocity of25-100 mm/s. The cross-section of the spiral formed is a half-circle with a radius of 1.6 0.5 mm. The maximum length of the spiral is 1270 mm. 

ASTMD 883 (2002) Terminology relating to plastics. Filadelfia, Brazil... 

The specific gravity of product gases, including LPG, may be determined conveniently by a number of methods and a variety of instruments (ASTM D-1070,ASTMD-4891). 

Aromatic content is a key property of low-boiling distillates such as naphtha and gasoline because the aromatic constituents influence a variety of properties including boiling range (ASTM D-86, IP 123), viscosity (ASTM D-88,ASTMD-445,ASTM D-2161,IP71),stability (ASTMD-525, IP 40), and compatibility (ASTM D-1133) with a variety of solutes. 

ASTMD 882. Standard Test Method for Tensile Properties of Thin Plastic Sheeting. 

ASTMD 1922-03. Standard Test Method for Propagation Tear Resistance of Plastic Film and Thin Sheeting by Pendulum Method. 

ASTMD-2863 sponsor ASTM (LOl limiting oxygen index)... 

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