Method for measuring intrinsic viscosity of polymer
A technology of intrinsic viscosity and determination method, applied in the direction of DC flow characteristic measurement, flow characteristic, measurement device, etc., can solve the problems of cumbersome and difficult determination of absolute viscosity of liquid, and achieve high measurement accuracy, reduced measurement cost, and measurement efficiency. high effect
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[0038] Examples:
[0039] The method for measuring the intrinsic viscosity of a polymer according to the present invention includes the following steps:
[0040] (a) Prepare a NaCl solution with a concentration of 1.00mol / L and place it in a constant temperature water bath at 30°C for standby; configure a polymer solution with a solvent of 1.00mol / L NaCl and a concentration of 0.001g / mL;
[0041] (b) Use a pipette to pipette 10-15 mL of NaCl solution with a concentration of 1.00 mol / L, add it to the Uzbek viscometer, keep the temperature in a water bath at 30±0.05°C for 10 minutes, and measure the time it takes to flow through lines a and b , Measure three times, the time difference between each time should not exceed 0.3 seconds, find the average value of the solvent flow time t 0 ;
[0042] (c) Wash the viscometer, after drying, use a pipette to pipette 10mL concentration C 0 =0.001g / mL polymer solution, add it to the Uzbekistan viscometer, keep the temperature in a 30±0.05℃ water b...
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