Differential scanning calorimetry standard tests

A differential scanning calorimetry (DSC) test was performed on an 11.4 mg polyethylene terephthalate (PET) sample using the standard ASTM D 3417 test method. The ASTM test calls for a temperature heating rate of 20°C/min (20°C rise every minute). The DSC output is presented in Fig. 2.69... 

ASTM D3895-07 Standard Test Method for Oxidative-Induction Time of Polyolefins by Differential Scanning Calorimetry, Book of Standards Vol. 08.02, ASTM International (formerly known as American Society for Testing and Materials), West Conshohocken, PA, USA. 

ASTM E 1356-98, ASTM Book of Standards 2002. Standard Test Method for Assignment of the Glass Transition Temperature by Differential Scanning Calorimetry or Differential Thermal Analysis . ASTM International, Conshohocken, PA. 

We have synthesized two small scale batches (PA-DBX 1 and 2) of 2-3 g each and one intermediate scale batch (PA-DBX 3) of 8-10 g of DBX-1 from our NaNT. The procedure used to synthesize DBX-1 was based on literature methods.[5,6] For each batch, sensitivity tests, thermal stability by differential scanning calorimetry (DSC), and performance tests were performed and compared to the standard DBX-1 that was obtained from PSEMC (Pacific Scientific Energetic Materials Company, inventors of DBX-1). 

As regards thermal properties, the techniques of interest are differential thermal analysis (DTA) and its variant differential scanning calorimetry (DSC). In these techniques heat losses to the surrounding medium are allowed but assumed to be dependent on temperature only. The heat input and temperature rise for the material under test are compared with those for a standard material. In DTA, the two test pieces are heated simultaneously under the same conditions and the difference in temperature between the two is monitored, whereas in DSC the difference in heat input to maintain both test pieces at the same temperature is recorded. 

ASTM E1269, 2004. Standard test method for determining specific heat capacity by differential scanning calorimetry. 

ASTM E1952, 2001. Standard test method for thermal conductivity and thermal diffusivity by modulated temperature differential scanning calorimetry. 

The remaining useful life evaluation routine (RULER) is a useful monitoring program for used engine oils. The RULER system is based on a voltammetric method (Jefferies and Ameye, 1997 Kauffman, 1989 and 1994). The data allows the user to monitor the depletation of two additives ZDDP and the phenol/amineH+ antioxidant. The RULER results were compared to other standard analytical techniques, differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), total base number (TBN), total acid number (TAN), and viscosity to determine any correlation between the techniques (Jefferies and Ameye, 1997 and 1998). The test concluded that the RULER instrument can... 

This would not be problematic if standardized, reliable, reproducible, and inexpensive laboratory tests were available to estimate each of the required properties. Although several specialized laboratory tests are available to measure some properties (e.g., specific heat capacity can be determined by differential scanning calorimetry [DSC]), many of these tests are still research tools and standard procedures to develop material properties for fire modeling have not yet been developed. Even if standard procedures were available, it would likely be so expensive to conduct 5+ different specialized laboratory tests for each material so that practicing engineers would be unable to apply this approach to real-world projects in an economically viable way. Furthermore, there is no guarantee that properties measured independently from multiple laboratory tests will provide accurate predictions of pyrolysis behavior in a slab pyrolysis/combustion experiment such as the Cone Calorimeter or Fire Propagation Apparatus. 

Differential scanning calorimetry (DSC) measurements were used to determine the decomposition temperatures of APX and ADNQ, and indicate that decomposition of APX starts with an onset temperature of 174 °C. In contrast to this behavior the decomposition temperature of the ionic compound ADNQ is 197 °C. In addition, both compounds were tested according to the UN3c standard in a Systag, FlexyTSC Radex oven at 75 °C for 48 hours with the result, that no weight loss or decomposition products were detected. 

ASTM D 3895 Standard Test Methodfor Oxidative Induction Time of Polyolefins by Differential Scanning Calorimetry Note of the author This procedure cannot be used for filled composite materials regarding Sampling section, particularly for those employing rather large filler particles. Instead of compression-molded test samples into sheet format prior to analysis to yield consistent sample morphology and weight and cut specimen disks (6.4-mm diameter) from the sheet to have a... 

ASTM D 5885 Standard Test Method for Oxidative Induction Time of Polyolefin Geosynthetics by High-Pressure Differential Scanning Calorimetry Principally, this is the same test as the above and is performed using a DSC, except now with a high-pressure cell that can sustain a pressure of 5500 kPa. The test is designed for highly stabilized materials. It is applicable only to materials whose... 

It is seen that the calibration constant disappears, which assumes that it is constant over the experimental conditions. The calculation is carried out using dedicated software. In some circumstances the crucible used for the sample may have to be different from that used for the calibrant. This means that a correction will be required to take into account the difference between the heat capacity of the two crucibles - readily calculated with sufficient accuracy. Measurements can be made at a series of temperatures but are meaningful only within the quasi-steady-state region of the experiment. The specific heat capacity of sapphire has been listed by ASTM in connection with the standard test method E 1269 (1999) for determining specific heat capacity by differential scanning calorimetry. 

Standard test method for assignment of the glass-transition temperatures hy differential scanning calorimetry or differential-thennal analysis Methods of test for determination of glass-transition temperature of electrical insulating materials... 

Thermal Heat Capacity - The heat capacity of SiOC-N312 BN 2-D composites was measured by differential scanning calorimetry (DSC). In this test a sample of dimensions 4.24 X 4.24 X 1 mm is placed in a calibrated heating chamber along with a known heat capacity standard, and the chamber is heated at a fixed heating rate. The temperature difference between the standard and the composite is recorded, and the heat capacity is calculated from the measured temperature difference, the heat capacity of the standard, and the calibration constraints for the system. 

ASTM D3418-99, Standard Test Method for Transition Temperatures of Polymers by Differential Scanning Calorimetry. 

ASTM American Standard Test Method BS British Standard CAB Cellulose acetate butyrate DGEBA Diglycidyl ether of bisphenol A DSC Differential scanning calorimetry ENR Epoxidized natural rubber EVA Ethylene-co-vinylacetate EPDM Ethylene propylene diene monomer ESC Environmental stress cracking HDT Heat deflection/distortion temperature HDPE High-density polyethylene HIPS High -impact polystyrene... 

Characterisation of SMPs by techniques such as cyclic thermomechanical tests and differential scanning calorimetry (DSC) is typically conducted in the dry state. Although such standard dry conditions are highly relevant to compare SMP properties with data from the literature, the impact of a physiological environment should generally be considered for SMP for biomedical applications. 

A standard test method of determination of heats of fusion and crystallization of polymers is given in ASTM D3417. This test method uses differential scanning calorimetry. 

ASTM D 3895-07. Standard test method for oxidative-induction time of polyolefins by differential scanning calorimetry. In Annual book of ASTM standards. Amer. Soc. for Testing and Materials, Philadelphia, PA, 2007. 

ASTM D5885 1995 Standard Test Method for Oxidative-Indnction Time of Polyolefin Geosynthetics by High-Pressnre Differential Scanning Calorimetry... 

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