Polyester film for electronic tag and preparation method thereof

Abstract

The invention discloses a polyester film for an electronic tag and a preparation method thereof. The preparation raw materials of the polyester film for the electronic tag comprises the following components in percentage by weight: 0.1-35.6 percent of functional chip A, 0.1-42.2 percent of functional chip B, 20-68 percent of recycled particle of waste polyester material, 40-90 percent of common polyester chip, 1-12 percent of polyester chip containing IPA (isopropyl alcohol), and 5-92 percent of silicon chip, wherein the mass percentage content of shell micro powder in the functional chip A is 0.1-13.5 percent; the mass percentage content of nano-montmorillonite in the functional chip B is 0.5-32.6 percent; the mass percentage content of the IPA in the polyester chip containing the IPA is0.2-7.8 percent; and the mass percentage content of silicon oxide in the silicon chip is 200-18900PPM (parts per million). Compared with the polyester film for the electronic tag in the prior art, the polyester film for the electronic tag disclosed by the invention has the outstanding advantages that: the polyester film for the electronic tag has longitudinal thermal shrinkage being within 0-1 percent at the high temperature of 180 DEG C, dielectric constant being within 1-3 under a test condition of 1 GHz, and dielectric loss tangent value being 0.2 percent to 0.8 percent; meets the use requirement of the electronic tag; has good practical applicability; and can make better economic benefits and social benefits.

Description

technical field [0001] The invention belongs to the technical field of new polymer materials for electronic products, and in particular relates to a polyester film for electronic labels and a preparation method thereof. Background technique [0002] Radio Frequency Identification (RFID), commonly known as electronic tags, is a non-contact automatic identification technology, which automatically identifies target objects and obtains relevant data through radio frequency signals, used to control, detect and track objects, and can work in various It can identify high-speed moving objects and identify multiple tags at the same time. The identification work does not require manual intervention, and the operation is fast and convenient. RFID is a simple wireless system, including an interrogator (or reader) and many transponders (or tags), its basic structure is composed of tags, readers and antennas; tags (Tag) are composed of coupling elements and chips , each tag has a unique ...

AI Technical Summary

Problems solved by technology

6) Compared with RFID products in other frequency bands, the data transmission rate of this frequency band is relatively slow

7) The price of the sensor is high

3) Radio waves in the ultra-high frequency band cannot pass through many materials, especially suspended particles such as water, dust, and fog

5) This frequency band has a good reading distance, but it is difficult to define the reading area

In China, although it has been reported that the longitudinal shrinkage rate of polyester film used for electronic labels is ≤0.1% under the condition of 150°C / 30min, the polyester film prepared by the existing production technology has poor processability and poor electrical properties. The disadvantages of stability and poor dimensional stability still cannot meet the requirements for the use of electronic tags, so it is necessary to innovate and improve the existing polyester film and its preparation method