A water bath circulation device for organic crystal growth
A technology of water bath circulation and organic crystals, applied in crystal growth, single crystal growth, single crystal growth, etc., can solve problems such as crystal growth solution instability, crystal growth device vibration, unfavorable crystal growth, etc., to reduce the risk of spontaneous nucleation Probability, uniform water temperature, and the effect of improving the stability of the solution
Inactive Publication Date: 2018-12-28
QINGDAO UNIV
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Problems solved by technology
However, in actual operation, the rotation of the stirring rod connected to the water pump can easily cause the vibration of the crystal growth device, resulting in the instability of the crystal growth solution, which is not conducive to crystal growth.
Moreover, liquid seals or oil seals are generally used to seal the water bath device, which is cumbersome to operate.
Method used
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Embodiment
[0023] The main structure of this embodiment includes a sealing cover 1, a water inlet pipe 2, a glass water bathtub 3, an electric heating rod 4, a crystal growth bottle 5, a water outlet pipe 6, a polytetrafluoroethylene bracket 7, a water pump 8, a governor 9, a temperature controller control device 10 and thermocouple 11; the glass water bathtub 3 of transparent circular large-diameter structure is built with polytetrafluoroethylene support 7, and the crystal growth bottle 5 is placed on the 10cm high polytetrafluoroethylene support 7, and placed in the transparent circle In the middle position of the large-diameter glass water bathtub 3, the temperature control device 10 is placed on the outside of the glass water bathtub 3, and the temperature control device 10 is electrically connected with the thermocouple 11 and the electric heating rod 4 respectively, and is used for feedbacking the temperature of the water bath and controlling the glass water bathtub 3 temperature; t...
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Abstract
Belonging to the technical field of crystal growth equipment, the invention relates to an organic crystal growth water-bath circulation device. A glass water bathtub has a built-in polytetrafluoroethylene bracket, a crystal growth bottle is placed on the polytetrafluoroethylene bracket, and is disposed at a middle position of the glass water bathtub, a temperature control apparatus is placed outside the glass water bathtub, and is electrically connected to a thermocouple and an electrical heating rod respectively, a water inlet pipe and a water outlet pipe are respectively fixed on the upper end and lower end of the polytetrafluoroethylene bracket, and round holes are evenly distributed on the water inlet pipe and the water outlet pipe, and the water inlet pipe and the water outlet pipe are respectively connected to a water pump hung above the glass water bathtub, and is connected to a speed regulator, the top end of the glass water bathtub is covered with a seal cap, the seal cap is provided with a groove and small holes, and the water pump is fixed on the seal cap. With the characteristics of simple structure, convenient operation and low cost, the organic crystal growth water-bath circulation device provided by the invention ensures a uniform temperature of solution in a crystal growth bottle, reduces the probability of spontaneous nucleation at the bottom, improves the solution stability, and is easy to grow large-size single crystals.
Description
Technical field: [0001] The invention belongs to the technical field of crystal growth equipment, and relates to a crystal growth equipment by solution method, in particular to a water bath circulation device for organic crystal growth using an organic solvent as a solvent. The vibration of the device is conducive to the growth of large-sized crystals. Background technique: [0002] With the development of optics and electronics technology, organic nonlinear optical crystals have become an indispensable key material in high-tech. However, most organic crystals have problems such as easy hydrolysis, low chemical stability, and large molecular weight. Compared with inorganic crystals, crystals have more complicated growth process and poorer mechanical properties. Therefore, the preparation and application of organic nonlinear optical crystals need to be further studied. [0003] The organic nonlinear optical crystal 4-(4-dimethylaminostyryl)picoline p-toluenesulfonate (DAST)...
Claims
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IPC IPC(8): C30B29/54C30B7/08
CPCC30B7/08C30B29/54
Inventor 滕冰曹丽凤钟德高纪少华孙箐武华策
Owner QINGDAO UNIV