MEASURING APPARATUS FOR SURFACE TENSION OF THERMOPLASTIC RESIN

MEASURING APPARATUS FOR SURFACE TENSION OF THERMOPLASTIC RESIN

PURPOSE:To reliably and accurately measure the surface tension of thermoplastic resins with a simple apparatus, by vertically movably providing a gas extruder, a gas-introducing pipe and a die with a horizontal blow-off surface in a closed vessel which can be heated as well as evacuated. CONSTITUTIO...

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Hauptverfasser: SHIMONARI MASASHI, SUZUOKA AKIO
Format: Patent
Sprache:eng
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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creator SHIMONARI MASASHI
SUZUOKA AKIO
description PURPOSE:To reliably and accurately measure the surface tension of thermoplastic resins with a simple apparatus, by vertically movably providing a gas extruder, a gas-introducing pipe and a die with a horizontal blow-off surface in a closed vessel which can be heated as well as evacuated. CONSTITUTION:Polyester pellets or other pulverulent and granular bodies are placed in a measuring container 27, which is mounted on a holder 26 of a vessel 1 and hermetically sealed. After a nitrogen replacement, the inside of the vessel 1 is reduced in pressure and maintained under a high vacuum. At the same time, the vessel 1 is heated by a heater 2 to melt the sample. After a predetermined temperature is confirmed by means of a thermometer inserted in a detecting end 19, the vacuum suction is suspended, and nitrogen gas having a predetermined temperature is introduced from a supply nozzle 23. Then, a pinion 17 is rotated to immerse a parallel surface 12 of a die 10 attached to an introducing pipe 9 into the sample in the measuring container 27. Nitrogen is released into the sample by employing an extruder 14 to form a bubble on the parallel surface 12. The size of the bubble is measured through a peep window 6 to measure the surface tension of the sample.
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
title MEASURING APPARATUS FOR SURFACE TENSION OF THERMOPLASTIC RESIN
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