Method and device for measuring rheological properties of sensitive medicine material
A technology of sensitive medicinal materials and rheological properties, which is applied in the direction of DC flow characteristic measurement, etc., can solve problems such as difficulties in testing rheological properties of sensitive medicinal materials, influence of pressure detection accuracy, threats to personal and property safety, etc., to achieve small errors , Guarantee the effect of accuracy, reliability and safety
Inactive Publication Date: 2013-01-02
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
In contrast, testing the rheological properties of sensitive pharmaceutical materials is difficult
On the one hand, under the influence of various factors such as impurity infiltration, temperature, pressure or load exceeding the upper limit of the process, it is very likely to cause combustion and explosion, threatening personal and property safety
On the other hand, due to the characteristics of various components, high viscosity and poor fluidity of sensitive materials such as gunpowder, when the temperature and pressure cannot exceed the safety critical value, when the plunger is used to pressurize it , it is easy to cause pressure fluctuations, which has a great impact on the accuracy of pressure detection
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Embodiment 1
[0027]A method and device for measuring the rheological properties of sensitive medicinal materials. The device is composed of a testing system, a data acquisition system 8 and a remote control system 9. The testing system includes a barrel 1, a plunger 2, a capillary 3, and a heating system 4. Transmission system 5, pressure sensor 6, temperature sensor 7, displacement sensor. The plunger 2 is set on the upper part of the barrel 1, which can go in and out of the barrel 1 and move up and down linearly driven by the transmission system 5; the capillary 3 is set on the lower end of the barrel 1 and can be replaced. The diameter of the pipe hole has 1.5mm, 2mm and 4mm, and the length-to-diameter ratio of the capillary 3 has 5, 10, 15 and 20. The present embodiment adopts two kinds of capillaries 3 whose pipe diameter is 4mm and the length-to-diameter ratio is 5 and 10; The heating system 4 is arranged around the barrel and the capillary, and is heated by an oil bath; the transmis...
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The invention relates to a method and a device for measuring rheological properties of a sensitive medicine material and belongs to the technical field of material testing. The testing device consists of a charging barrel, a plunger, a capillary, a heating system, a transmission system, a pressure sensor, a temperature sensor, a displacement sensor, a data acquisition system and a remote control system. According to the method, the rheological properties of powder and other sensitive medicine materials can be measured under safety conditions, and the error is small; the device has the advantages of high safety and simple structure, and is convenient to operate; and the related rheological data tested by the method and the device can be used for establishing constitutive equations of corresponding medicine materials, performing numerical calculation, facilitating the structural design of equipment in sensitive medicine material manufacturing industry, optimizing the machining process conditions and promoting the technical development in related fields.
Description
technical field [0001] The invention relates to a method and a device for measuring the rheological properties of sensitive medicinal materials, belonging to the technical field of material testing. Background technique [0002] The rheological properties of the material reflect the relationship between the viscosity of the material and the shear rate under certain temperature conditions. The study of the rheological properties of these special sensitive materials such as gunpowder plays an important role in guiding the processing and molding of these materials. The data can not only accurately reflect the performance characteristics of materials, but also can be used for numerical calculations to guide the design of related equipment and the setting of process conditions. [0003] Compared with these special sensitive materials such as gunpowder, polymers and other polymer materials have good fluidity under processing temperature and pressure, and it is easy to realize the ...
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Inventor 王建陈晋南彭炯
Owner BEIJING INSTITUTE OF TECHNOLOGYGY