Drying device for EVA (Ethylene Vinyl Acetute) sample crosslinking degree test

Abstract

The invention provides a drying device for an EVA (Ethylene Vinyl Acetute) sample crosslinking degree test. The drying device comprises a thermal-insulating oven, a tank cover, a fluid removal barrel, a motor, a drainage electromagnetic reversing valve, a fluid drainage tube, a gas transmission electromagnetic reversing valve, a hot air inlet tube and a hot air exhaust tube, wherein the fluid removal barrel driven by the motor is arranged in the thermal-insulating oven; the fluid drainage tube and the hot air inlet tube are arranged at the bottom of the thermal-insulating oven; in the height direction, the fluid drainage tube is positioned under the hot air inlet tube; the fluid drainage tube is communicated with the cavity of the thermal-insulating oven; the hot air inlet tube is communicated with the cavity of a closed drying tank body; and the hot air exhaust tube is communicated with the upper side of the cavity of the thermal-insulating oven. By using the device, an extracted EVA rubber sample can be directly subjected to fluid removal and drying, a toxic dimethylbenzene solvent is concentrically recycled, so that the toxic dimethylbenzene solvent is prevented from overflowing to pollute the environment and hurting operators; and drying is carried out by adopting hot air flow at the temperature of between 30 and 50 DEG C, so that burning accidents of the dimethylbenzene in a drying process can be effectively prevented, and the EVA rubber sample can be dried quickly.

Description

Technical field: [0001] The invention relates to a detection device for encapsulation materials in the production process of solar battery modules, in particular to a drying device for testing the crosslinking degree of EVA samples. Background technique: [0002] Solar cells use the quantum effect of semiconductor silicon materials to generate electricity, directly converting light energy into electrical energy. If the silicon wafer is directly exposed to the atmosphere, its photoelectric conversion energy-saving effect will be attenuated due to the influence of various environmental factors. It will be used for 20-25 years under outdoor conditions, and it must have good packaging to meet the requirements of windproof, dustproof, moistureproof, and corrosion-resistant conditions for solar cell modules in use. Research experiments have shown that the failure of batteries often lies in the packaging of solar cell components. For this reason, solar cells are generally encapsul...

AI Technical Summary

Problems solved by technology

At present, the direct drying method of oven heating is usually used. Since the EVA glue sample is extracted with a xylene solvent, the extracted EVA glue sample also contains xylene, and xylene is a toxic and flammable solvent. Therefore, It is dangerous to directly dry the extracted EVA rubber sample. The operator must wear protective equipment and be careful in operation. If the temperature control is not good, it will cause the burning of xylene. If the ventilation is not good, it will cause damage to the operator causing injury

Operators in solar cell production enterprises are unwilling to be engaged in the work of this post. Therefore, it is necessary to design a drying device for testing the degree of crosslinking of EVA samples, which can directly deliquify and dry the extracted EVA glue sample. It can not only prevent the overflow of toxic xylene solvent from polluting the environment, harming the operator, and prevent the burning of xylene during the drying process, but also can dry quickly

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