The heat distortion temperature the temperature which piece PVC, in heat medium a bending load applied it, reaches specified deflection temperature rises. Vicat softening temperature defined the temperature the needle shaped penetrator sinks the test piece a depth.
The Vicat softening temperature the temperature which circular indenter a cross-section 1 mm² a standard load 10 or 50 will penetrate specimen precisely 1 mm deep. Vicat softening temperature defined ISO 306 ASTM D1525. Classical VST instruments silicone oil heat transfer fluid.
The VST corresponds the temperature at thermoplastics to soften rapidly. ISO 306 specifies general test method determination the Vicat softening temperature (VST) thermoplastic materials. ASTM D1525 specifies standard test method the Vicat softening temperature of plastics. definitions the .
The temperature which needle penetrated a depth 1 6 0.01 mm recorded the Vicat softening temperature. 5. Significance Use 5.1 Data obtained this test method beis to compare heat-softening qualities thermoplastic materials.
Vicat softening temperature test a method measuring Vicat softening temperature of thermoplastic pipes fittings. is suitable thermoplastic plastic materials can measure temperature the pipe begins soften rapidly, is suitable crystalline semi-crystalline polymer materials.
Vicat softening temperature of plastics: is important? ASTM D1525 Vicat Softening Temperature (VST) test gauges ability a plastic product retain surface mechanical properties high temperatures. high temperature mechanical properties plastics limit widespread application. polymers capable .
3.1.2 Vicat softening temperature—the temperature which flat-ended needle 1-mm2 circular cross section penetrate thermoplastic specimen a depth 1 mm a specified load a selected uniform rate temperature rise. 4. Summary Test Method 4.1 flat-ended needle loaded a specified mass is
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Specifies particular test conditions determining Vicat softening temperature of PVC-U PVC-C pipes fittings well PVC-HI pipes (the general test method given ISO 2507-1). gives, information, corresponding basic specifications. General information. Status : Published.
Significance Use 5.1 Data obtained this test method used compare heat-softening qualities thermoplastic materials. 5.2 test method useful the areas quality control, development, characterization plastic materials.
Thermoplastics pipes fittings — Vicat softening temperature: General test method test conditions Vinyl chloride - based (PVC-U, PVC-C, PVC-Hi) Acryl nitrile - based (ABS, ASA) pipes fittings
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