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Melt Index ASTM

Melt Index ASTM D.1238 (300 C) g/10 min Notched impact strength ASTM D.256 hod ftlbfin jin Recommended processing method... [Pg.564]

The following polymer characteristics were obtained on the variously irradiated test specimens melt index (ASTM 1238-62T), Vicat softening temperature (modified ASTM 1525-58T) heat distortion (ASTM D 1220-63T) physical strength yield strength ultimate tensile strength percent elongation at break (ASTM D 412-64T) chemical resistance to boiling toluene. [Pg.167]

Evaluating the Melt Index (MI) from the Flow Curve Develop a methodology and computer program logic to evaluate the Melt Index (ASTM Standard D) of a material from its flow curve (non-Newtonian viscosity as a function of shear rate). [Pg.135]

MI = Melt index (ASTM D 1238, condition E) HLMI = Flow rate (ASTM D 1238, FR = Flow ratio ratio of melt index HLMI to melt index MI... [Pg.138]

High load melt index ASTM D1238 High 34.14 23.22... [Pg.2851]

Hardness, Shore D See Sections G and H Impact Strength, Izod See Secticns G ard H Low Temperature BritOeness See Sector G and E Melt Index (ASTM Method D 1238-57T)... [Pg.729]

Testing. Melt index or melt flow rate at 190°C, according to ASTM D1238, is the test most frequently appHed to the characterization of commercial acetal resins. The materials are typically grouped or differentiated according to their melt flow rate. Several other ASTM tests are commonly used for the characterization and specification of acetal resins. [Pg.57]

Melt Index or Melt Viscosity. Melt index describes the flow behavior of a polymer at a specific temperature under specific pressure. If the melt index is low, its melt viscosity or melt flow resistance is high the latter is a term that denotes the resistance of molten polymer to flow when making film, pipe, or containers. ASTM D1238 is the designated method for this test. [Pg.372]

Flowability MFI melt flow index, ASTM D 1238 Procedure A Extrusion plastometer... [Pg.325]

Table 3.8 Test Conditions and Shear Stress at the Capillary Wall for Melt Index Testing as Prescribed by ASTM D1238-04c [15]... Table 3.8 Test Conditions and Shear Stress at the Capillary Wall for Melt Index Testing as Prescribed by ASTM D1238-04c [15]...
The T of crystalline polymers may be determined by observing the first-order transition (change in heat capacity value) by DTA or by DSC (ASTM-D3418). Some comparative information on thermal properties of polyolefins may be obtained from the melt index. To determine the melt index, the weight of extrudate or strand under a specified load and at a specified temperature is measured. Melt index values are inversely related to the melt viscosity. [Pg.35]

According to ASTM D1248. HDPE materials are divided into various classifications based on propetties. Two of the most easily measured characteristics are density and melt index the former determines the type of HDPE. the latter its category. [Pg.1143]

Values in the table refer to products having comparable melt index of 0.4-2.0 (ASTM-D 1238-52 T). [Pg.101]

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