SU641322A1 - Device for measuring mean-viscosity molecular weight of polymer - Google Patents
Device for measuring mean-viscosity molecular weight of polymerInfo
- Publication number
- SU641322A1 SU641322A1 SU772466969A SU2466969A SU641322A1 SU 641322 A1 SU641322 A1 SU 641322A1 SU 772466969 A SU772466969 A SU 772466969A SU 2466969 A SU2466969 A SU 2466969A SU 641322 A1 SU641322 A1 SU 641322A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- polymer
- molecular weight
- capillaries
- viscosity molecular
- measuring mean
- Prior art date
Links
Description
с соотношением диаметров большего и меньшего капилл ров в пределах 1,5-1,25.with a ratio of the diameters of the larger and smaller capillaries in the range 1.5-1.25.
На чертеже представлена схема устройства дл измерени средиев зкостного молекул рного веса полимера.The drawing shows a diagram of a device for measuring the viscosity molecular weight of a polymer.
Устройство состоит из задатчика 1 посто нного расхода, коротких капилл ров 2, 3, длинных капилл ров 4, 5, межкапилл рных 6 и 7, регистрирующего прибора 8. Все элементы расположены последовательно по направлению потока контролируемой среды . Короткий капилл р 2, межкапилл рна камера 6 и длинный капилл р 4, образующие одну пару капилл ров, включены перед задатчиком 1 посто нного расхода, а длинный капилл р 5, межкапилл рна камера 7 и короткий капилл р 3, образующие вторую пару капилл ров, включены за задатчиком 1. Длинные капилл ры 4 и 5 имеют больший внутренний диаметр, чем короткие капилл ры 2 и 3.The device consists of a constant flow setting device 1, 2, 3 short capillaries, 4, 5 long capillaries, 6 and 7 intercapillaries, a recording device 8. All elements are arranged in series in the direction of flow of the controlled medium. A short capillary p 2, intercapillary chamber 6 and a long capillary p 4, forming one pair of capillaries, are included in front of unit 1 of constant flow, and a long capillary p 5, intercapillary chamber 7 and a short capillary 3, forming the second pair of capillaries , included behind the setting device 1. Long capillaries 4 and 5 have a larger internal diameter than short capillaries 2 and 3.
Прокачиваемый через короткий капилл р 2, межкапилл рную камеру 6 и длинный капилл р 4 раствор полимера будет находитьс в двух режимах деформировани . Перепад давлений на малом капилл ре 2 пропорционален эффективной в зкости раствора полимера при большей скорости сдвига, а перепад давлений на большем капилл ре 4 пропорционален эффективной в зкости того же раствора при меньшей скорости сдвига. Скорости сдвига определ ютс соотношением расхода контролируемой среды и внутреннего диаметра капилл ров. Давление в межкапилл рной камере 6, соедин ющей капилл ры 2 и 4, определ етс разностью эффективных в зкостей при двух различных скорост х сдвига.The polymer solution pumped through the short capillary tube 2, the intercapillary chamber 6 and the long capillary tube 4 will be in two modes of deformation. The pressure drop on a small capillary 2 is proportional to the effective viscosity of the polymer solution at a higher shear rate, and the pressure drop on a larger capillary 4 is proportional to the effective viscosity of the same solution at a lower shear rate. Shear rates are determined by the ratio of the flow rate of the controlled medium and the internal diameter of the capillaries. The pressure in the intercapillary chamber 6 connecting the capillaries 2 and 4 is determined by the difference in effective viscosities at two different shear rates.
При изменении качественного показател раствора полимера, например увеличении его в зкости по Муни или среднев зкостиого молекул рного веса, будет расти эффективMB 103107,8When the quality of a polymer solution changes, such as increasing its Mooney viscosity or its average molecular weight, the efficiency will increase. MB 103107.8
4 Р вых 4 P out
824 ( ммвд. ст.)824 (mmvd. Art.)
Учитыва св зь между среднев зкостным молекул рным весом и в зкостью по Муни каучука, устройство можно примен ть дл измерени этих параметров полимеров непосредственно в процессе полимеризации.Taking into account the relationship between the average molecular weight and Mooney rubber viscosity, the device can be used to measure these polymer parameters directly in the polymerization process.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772466969A SU641322A1 (en) | 1977-03-25 | 1977-03-25 | Device for measuring mean-viscosity molecular weight of polymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772466969A SU641322A1 (en) | 1977-03-25 | 1977-03-25 | Device for measuring mean-viscosity molecular weight of polymer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU641322A1 true SU641322A1 (en) | 1979-01-05 |
Family
ID=20701248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772466969A SU641322A1 (en) | 1977-03-25 | 1977-03-25 | Device for measuring mean-viscosity molecular weight of polymer |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU641322A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4644781A (en) * | 1984-12-07 | 1987-02-24 | The United States Of America As Represented By The Secretary Of The Army | Fluid property measuring device |
-
1977
- 1977-03-25 SU SU772466969A patent/SU641322A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4644781A (en) * | 1984-12-07 | 1987-02-24 | The United States Of America As Represented By The Secretary Of The Army | Fluid property measuring device |
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