Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

Inactive Publication Date: 2010-06-16
申达集团有限公司 +1
View PDF1 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This greatly reduces the aging resistance of the polyester film

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing polyester film for photovoltaic cell backplane
  • Method for preparing polyester film for photovoltaic cell backplane
  • Method for preparing polyester film for photovoltaic cell backplane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be further described below with specific examples, which are easily grasped and verified by those skilled in the art. The present invention is illustrated by examples, but not limited thereto.

[0038] Terephthalic acid (PTA), ethylene glycol (EG), triethyl phosphate (TEP), antimony acetate and antioxidant 1010, the specific formula of the five substances is as follows:

[0039] Table 3 PET synthesis monomer ratio

[0040]

[0041] On the polyester batch polymerization device, first add terephthalic acid (PTA), ethylene glycol (EG) and antimony acetate into the reactor according to the above formula, and the temperature rises to 265°C for esterification reaction. At this time, triethyl Phosphate ester (TEP) and antioxidant 1010 are formulated with ethylene glycol (EG), and when the esterification rate reaches 95%, triethyl phosphate ester formulated with ethylene glycol and antioxidant 1010 are added. Under the pressure of 25Pa, react at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for preparing a polyester film for a photovoltaic cell backplane, which comprises:1, a process step of synthesizing polyester chips, which is to first add terephthalic acid, glycol and antimony acetate serving as a catalyst into a reaction kettle to perform esterification, then to add triethyl phosphate and antioxidant 1010 which are blended with glycol to perform an reaction and finally to discharge the products of the reaction; 2, a process step of preparing mother particles, which is to crush the polyester chips synthesized by the step 1, dry the crushed polyester chips, add polycarbodiimide, an ultraviolet absorber MV 3638, triethyl phosphate and antioxidant 1010, mix the mixture and extrude the mixture by a double-screw extruder to produce the particles; and 3, a process step of producing a film by biaxial tension, which is to place the polyester chips synthesized by the step 1, the mother particles prepared by the step 2 and SiO2 3,000+ / -100ppm PET polyester chips into the double-screw extruder for blending the mixture, melt and extrude the mixture in the double-screw extruder, casting a piece by a casting piece machine and prepare the film by biaxial tension. The method of the invention can change an active terminal carboxyl group into a stable group, so the polyester film has high aging resistance.

Description

(1) Technical field [0001] The invention relates to a preparation method of a polyester film used for a photovoltaic battery back plate. The invention belongs to the technical field of polymer polymerization and processing. (2) Background technology [0002] The main purpose of the early invention of solar cells was to be applied to spacecraft. DuPont’s TPT three-layer composite film was selected as its back film, Tedlar (polyvinylidene fluoride film) ~ PET (polyethylene terephthalate) ~ Tedlar (polyvinylidene fluoride film) is composed of three layers. The inner layer and the outer layer are made of polyvinylidene fluoride. Due to the high bond energy of F~C bonds, the aging resistance is excellent. In the early days, a pure PET backsheet was tried, but due to the backwardness of PET synthesis technology at that time, it failed. In recent years, when it has been converted to civilian use, TPT is still used on the backplane of photovoltaic cells. The typical brand is TPT f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B29C55/12B29C47/92B29B9/06B29B13/06H01L31/18H01L31/0203C08L67/02C08K5/521B29L7/00B29C48/40B29C48/92H01L31/049
CPCB29C48/92B29C2948/92704B29C48/04B29C48/08B29C48/40B29C48/9185B29C2948/926B29C2948/92895B29C2948/92904
Inventor 魏文良薛志刚薛峰
Owner 申达集团有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com