Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Vicat softening temperatures

ISO 306, Plastics Thermoplastic Materials-Determination of Vicat Softening Temperature, ISO, Geneva, Swit2eiiand, 1987. [Pg.159]

The Vicat softening temperature is the temperature at which a standard deflection occurs for defined test samples subjected to a given linear temperature increase and a compression loading from a defined indenter of a specified weight. The load used is often ION (Vicat A) or SON (Vicat B) and must be indicated with the results. In either case the polymer cannot be used under this compression load at this temperature. [Pg.159]

Figure 4.26 displays examples of Vicat softening temperatures (VST) versus VA content. The other important parameter for VST is the melt flow index. [Pg.284]

All these polymers are very flexible with low melting points, low Vicat softening temperatures, and very low moduli. [Pg.304]

ISO 2507-2 1995 Thermoplastics pipes and fittings - Vicat softening temperature - Part 2 Test conditions for unplasticized poly(vinyl chloride) (PVC-U) or chlorinated poly(vinyl chloride) (PVC-C) pipes and fittings and for high impact resistance poly(vinyl chloride) (PVC-HI) pipes... [Pg.331]

ISO 727-1 2002 Fittings made from unplasticized poly(vinyl chloride) (PVC-U), chlorinated poly(vinyl chloride) (PVC-C) or acrylonitrile/butadiene/styrene (ABS) with plain sockets for pipes under pressure - Part 1 Metric series ISO 727-2 2002 Fittings made from unplasticized poly(vinyl chloride) (PVC-U), chlorinated poly(vinyl chloride) (PVC-C) or acrylonitrile/butadiene/styrene (ABS) with plain sockets for pipes under pressure - Part 2 Inch-based series ISO 2507-3 1995 Thermoplastics pipes and fittings - Vicat softening temperature - Part 3 Test conditions for acrylonitrile/butadiene/styrene (ABS) and acrylonitrile/styrene/acrylic ester (ASA) pipes and fittings... [Pg.362]

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]

Table V. Vicat Softening Temperatures for duPont Ionomer Samples... Table V. Vicat Softening Temperatures for duPont Ionomer Samples...
ASTM D1525, Vicat Softening Temperature of Plastics, Vol. 8.01, ASTM, Philadelphia, Pa., 1991. [Pg.158]

At elevated temperatures al polymers soften, dependent on their glass-rubber transition points, Tg, and/of their melting points, Tm. These temperatures limit the practical use of plastics. To characterize the softening behaviour, in practice various types of standard tests are being carried out, resulting in values for the softening temperature , defined in different ways. The values mostly used are the ISO Heat Deflection Temperature (HDT) and the Vicat Softening Temperature (VST or... [Pg.145]

Another standard heat distortion test is the Vicat test where a flat-ended needle (diameter 1 mm) penetrates to the depth of 1 mm under a specific load of 50 N (Vicat A) or 10 N (Vicat B). It will be clear that the penetration depth is again determined by the Young modulus, although in a much more complicated way than in the bending test. A rough estimate yields Vicat softening temperatures where E 1000 MPa (Vicat A) or E 200 MPa (Vicat B). [Pg.849]

VanKrevelen-Hoftijzer viscosity-temperature relationship, 539 Van t Hoff equation, 751 Velocities of sound waves, 390 Velocity gradient, 526 Vertical Burning Test, 854 Vicat softening temperature, 849 Vickers hardness test, 837 Viscoelasticity, 405... [Pg.1004]

The heat distortion resistance of finished HIPS parts is dependent on their shape, the production conditions, the type of heat source and the duration of heating, and also on the HIPS grade in question. Parts produced without application of an external load and having low internal stresses can be heated for a short time to about 15 °C below the Vicat softening temperature without undergoing distortion. [Pg.252]

Product Deflection temperature (0.45 MPa) IS075-1, -2 (°C) Vicat softening temperature ISO306 (B50, 50c C/h50N) (°C) CLTE parallel to flow ISOl 1359-1, —2 (cm/cm/ C)... [Pg.252]

See other pages where Vicat softening temperatures is mentioned: [Pg.1052]    [Pg.191]    [Pg.158]    [Pg.152]    [Pg.414]    [Pg.157]    [Pg.159]    [Pg.175]    [Pg.261]    [Pg.284]    [Pg.291]    [Pg.292]    [Pg.292]    [Pg.323]    [Pg.898]    [Pg.40]    [Pg.4]    [Pg.168]    [Pg.82]    [Pg.319]    [Pg.4]    [Pg.152]    [Pg.158]    [Pg.80]    [Pg.191]    [Pg.683]    [Pg.683]   
See also in sourсe #XX -- [ Pg.19 , Pg.511 ]

See also in sourсe #XX -- [ Pg.159 , Pg.175 ]

See also in sourсe #XX -- [ Pg.145 , Pg.187 ]

See also in sourсe #XX -- [ Pg.481 ]

See also in sourсe #XX -- [ Pg.26 ]

See also in sourсe #XX -- [ Pg.186 ]

See also in sourсe #XX -- [ Pg.225 ]

See also in sourсe #XX -- [ Pg.97 , Pg.525 ]

See also in sourсe #XX -- [ Pg.395 ]



SEARCH



Polymers Vicat softening temperature

SOFTEN

Softening temperatures

Softens

Vicat

Vicat softening

Vicat softening point temperature

Vicat softening temperatur

Vicat temperature

© 2024 chempedia.info