Method for preparing polyester film for photovoltaic cell backplane
A polyester film and photovoltaic cell technology, which is applied in applications, circuits, electrical components, etc., can solve the problems of reducing the aging resistance of polyester films, and achieve the effects of high fluorine content, good aging resistance, and high weather resistance
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[0037] The present invention will be further described with specific embodiments below, and the described embodiments can be easily grasped and verified by those skilled in the art. The embodiments are used to illustrate the present invention, but not to limit the invention.
[0038] Terephthalic acid (PTA), ethylene glycol (EG), triethyl phosphate (TEP), antimony acetate and antioxidant 1010, the specific formulations of the five substances are as follows:
[0039] Table 3 Ratio of PET synthetic monomer
[0040]
[0041] On the polyester batch polymerization unit, first add terephthalic acid (PTA), ethylene glycol (EG) and antimony acetate into the reactor according to the above formula, and raise the temperature to 265℃ for esterification reaction. Phosphate (TEP) and antioxidant 1010 are formulated with ethylene glycol (EG). When the esterification rate reaches 95%, triethyl phosphate and antioxidant 1010 formulated with ethylene glycol are added. Under a pressure of 25 Pa, the ...
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