乙二醇中黏度检测方案(粘度计)

京都電子工業株式会社KYOTO ELECTRONICSMANUFACTURING CO.，LTD.APVS-0104en APVS-0104en6. Procedure Application Note Temperature dependence of viscosity of ethylene glycol IndustryPetroleum， EnergyInstrumentViscometerMeasurement method：Electro Magnetically Spinning MethodStandards 1. Scope Ethylene glycol is a kind of dihydric alcohol widely used as a solvent， antifreeze solution，synthetic raw material， etc. The viscosity rises as the concentration of ethylene glycol increase in the minus temperaturerange. In addition， the rise in viscosity causes degradation of circulation flow rate and coolingcapacity. An example of measuring the temperature dependence of the dynamic viscosity of ethyleneglycol using an EMS viscometer that can be measured by sealing， sterilization and non-contactwas shown below. 2.Precautions When performing measurement below the ambient temperature， make sure to introduce dry airto the instrument before starting measurement in order to prevent dew condensation. 3. Post-measurement procedure The sample container and the sample are discarded appropriately. 4.Apparatus EMS Viscometer Control Laptop PC Dry Air Unit Compressor 5.Reagents Sample ：Ethylene glycol 京都电子工业株式会社-可睦电子(上海)商贸有限公司 上海市徐汇区宜山路333号1201室电话：021-54488867 电邮： kemu-kem@163. com 网址： http：//www.kem-china.com 1) Enter the following conditions in measurement condition of the sequence mode of controlsoftware. Measurement mode ：Sequence mode Measurement temperature ：0-200℃ (10℃ interval) Motor rotation speed ：1，000 rpm Measurement time ：I(1 second) Repeat count ：10 times Measurement interval ：5 seconds VWaiting time for temperature stability ：10 minutes 2) Place an aluminum spherical probe of o 2 mm and a sample of 300 uL in a container， coverwith a cap and packing， set the sample container in the EMS Viscometer， and click themeasurement button. 7.Example The viscosity measurement results about the temperature dependence of ethylene glycol areshown in Figure 1 and Table 1，2. The result is confirmed to be corresponding to the value described in the reference below well. The difference of measurement results is seen to be large in the high temperature， however， itcan be measured stably within R.S.D.3% even in the vicinity of boiling point (197.3℃). For your information， it takes about 4 and half hours to measure the temperature dependence ofthe viscosity with sequence measurement. Figure 1. Measurement result about the temperature dependence of the viscosity of ethylene glycol 京都电子工业株式会社-可睦电子(上海)商贸有限公司 上海市徐汇区宜山路333号1201室电话：021-54488867 电邮： kemu-kem@163.com 网址： http：//www.kem-china. com Table 1. Measurement result about the temperature dependence of the viscosity (0-100℃) (mPa's) Frequencyofmeasurement Temperature (℃) 0 10 20 30 40 50 60 70 80 90 100 1st 53.8 31.4 20.0 13.2 9.29 6.65 4.88 3.82 2.98 2.53 2.05 2nd 53.8 31.4 20.0 13.2 9.26 6.69 4.88 3.82 2.98 2.53 2.05 3rd 53.8 31.5 20.0 13.2 9.28 6.67 4.88 3.82 2.99 2.53 2.06 4th 53.8 31.4 20.0 13.2 9.29 6.68 4.89 3.83 2.99 2.53 2.05 5th 53.8 31.5 20.0 13.2 9.28 6.67 4.89 3.83 2.99 2.53 2.06 6th 53.8 31.5 20.0 13.2 9.29 6.66 4.88 3.82 2.98 2.53 2.05 7th 53.7 31.5 20.0 13.2 9.28 6.67 4.88 3.82 2.98 2.53 2.05 8th 53.7 31.5 20.0 13.2 9.28 6.67 4.89 3.83 2.98 2.53 2.05 9th 53.7 31.4 20.0 13.2 9.28 6.67 4.88 3.82 2.98 2.53 2.05 10th 53.7 31.5 20.0 13.2 9.29 6.67 4.88 3.82 2.98 2.53 2.05 Mean 53.8 31.5 20.0 13.2 9.28 6.67 4.88 3.82 2.98 2.53 2.05 Standard deviation 0.1 0.1 0.0 0.0 0.01 0.01 0.00 0.00 0.00 0.00 0.00 RSD(%) 0.1 0.2 0.0 0.0 0.1 0.2 0.1 0.1 0.2 0.0 0.2 Reference data 19.9 13.2 9.13 4.95 3.02 1.99 Table2. Measurement result about the temperature dependence of the viscosity (110-200℃) (mPa's) Frequency of measurement Temperature (℃) 110 120 130 140 150 160 170 180 190 200 1st 1.84 1.51 1.39 1.24 1.12 1.01 0.92 0.85 0.79 0.70 2nd 1.83 1.52 1.39 1.24 1.12 1.01 0.92 0.85 0.78 0.77 3rd 1.83 1.51 1.39 1.25 1.12 1.00 0.92 0.85 0.77 0.76 4th 1.83 1.51 1.39 1.25 1.11 1.01 0.93 0.85 0.81 0.74 5th 1.82 1.51 1.40 1.24 1.12 1.01 0.92 0.85 0.81 0.74 6th 1.83 1.51 1.39 1.24 1.12 1.01 0.92 0.84 0.80 0.72 7th 1.83 1.51 1.39 1.24 1.12 1.00 0.92 0.86 0.79 0.74 8th 1.83 1.51 1.39 1.24 1.12 1.01 0.92 0.83 0.80 0.74 9th 1.83 1.51 1.39 1.26 1.13 1.01 0.92 0.85 0.80 0.74 1Oth 1.83 1.51 1.39 1.25 1.12 1.01 0.92 0.85 0.80 0.74 Mean 1.83 1.51 1.39 1.25 1.12 1.01 0.92 0.85 0.80 0.74 Standard deviation 0.00 0.00 0.00 0.01 0.00 0.00 0.00 0.01 0.01 0.02 RSD (%) 0.3 0.2 0.3 0.6 0.4 0.4 0.5 1.0 1.7 2.6 Reference data 1.40 1.04 8. Summarv Temperature dependence of viscosity of ethylene glycol can be measured in a wide temperaturerange of 0-200℃. Even the high hygroscopic sample like ethylene glycol can be confirmed themeasurement stability under sealing without absorbing moisture. 9. References Chemical Handbook (Revision the fifth edition) Basic course ⅡI-40 [Table 7.15 Temperature 0 dependence of viscosity coefficient n of organic compound] 京都电子工业株式会社-可睦电子(上海)商贸有限公司 上海市徐汇区宜山路333号1201室电话：021-54488867 电邮：kemu-kem@163.com 网址： http：//www. kem-china. com /京都電子工業株式会社KYOTO ELECTRONICSMANUFACTURING CO.，LTD 乙二醇在不同温度下黏度变化的研究 乙二醇是一种二元醇，广泛用作溶剂、防冻剂、合成原料等，在负温度范围内，随着乙二醇浓度的增加，粘度增大。此外，粘度的上升会导致循环流量和冷却能力的下降。使用EMS电磁旋转粘度计测量乙二醇动态粘度随温度变化的应用范例，该粘度计可以通过密封、灭菌和非接触式测量乙二醇的动态粘度。 在温度范围为0~200°C时，乙二醇粘度随温度而变化。即使是乙二醇这样高吸湿性的样品，也可以在密封条件且不吸收水分的情况下，确保测量的稳定性。