An open-type purification high-vacuum visible organic small molecule purification special equipment

Abstract

The invention discloses an open-type purifying high-vacuum visible organic small molecule purification special equipment, which comprises a furnace frame, a flange, a hot gas outlet, an armored thermocouple, a cold gas inlet, a protective casing, and a cleaning casing. device, test tube and display; the furnace rack is provided with an open-type furnace heating combination device, and the open-type furnace heating combination device includes upper and lower furnace combination heating plates, and a test tube is arranged between the upper and lower furnace combination heating plates; the present invention It is easy to observe the purified product in the vacuum tube under high temperature environment, the added armored thermocouple effectively protects the product from being damaged due to overheating, the dust filter trap and the cooling filter trap solve the traditional vacuum system without affecting the vacuum The material powder and hot gas are pumped into the molecular pump, which affects the service life of the equipment and effectively achieves the dual effects of filtration and cooling.

Description

technical field [0001] The invention belongs to the field of organic photoelectric material manufacturing, and relates to an open-type purification high-vacuum visualization technology, in particular to an open-type purification high-vacuum visualization special equipment for purifying small organic molecules. Background technique [0002] In order to meet the demand for materials in the field of organic optoelectronic devices, my country's organic optoelectronic material industry needs to produce high-quality, high-purity organic optoelectronic materials in order to obtain high-performance organic optoelectronic devices. In the prior art, vacuum sublimation technology is often used to purify organic small molecule materials. The currently used vacuum sublimation purification equipment adopts the design scheme of three-stage temperature control or five-stage temperature control, through the combination of mechanical pump and molecular pump to obtain a high vacuum atmosphere,...

AI Technical Summary

Problems solved by technology

[0003] However, in the specific operation, it often depends on the experience and feeling of the technicians to adjust the heating device, lacks effective monitoring of the purification process, cannot realize effective control of the vacuum sublimation purification process of organic small molecule materials, and is not easy to control the organic small molecule. Diffusion rate; so that when the diffusion rate is small, the purification speed is affected, thereby affecting the production efficiency; when the diffusion rate is high, small organic molecules will diffuse into the vacuum pump, causing serious pollution to the vacuum pump and waste of materials

[0004] At the same time, due to the inability to effectively control the vacuum sublimation purification process of organic small molecule materials, the purity and quality of the materials are poor

Images