Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of transparent polyimide film with excellent performance and preparation method thereof

A transparent polyimide and polyimide film technology, applied in the field of organic film manufacturing, can solve the problem of poor surface wettability and adhesion of polyimide film, unfavorable polyimide film coating, Bonding and cleaning, easy failure and other issues

Active Publication Date: 2021-05-11
RAYITEK HI TECH FILM CO LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the above polyimide films still have poor surface wettability and poor adhesion, which is not conducive to the coating, bonding and cleaning processes when the polyimide film is used as a substrate or cover material.
At this time, it is necessary to use corona or plasma treatment to improve the surface energy of the film, but corona and plasma treatment are time-sensitive and prone to failure

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
  • A kind of transparent polyimide film with excellent performance and preparation method thereof
  • A kind of transparent polyimide film with excellent performance and preparation method thereof
  • A kind of transparent polyimide film with excellent performance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Add 180g of N,N-dimethylacetamide solvent to a 500ml three-necked round bottom flask equipped with a nitrogen inlet and mechanical stirring, and then add 0.3mol of diamine A: 4,4'-diaminodiphenyl ether , 0.4mol diamine B: 1,4-cyclohexanediamine and 0.3mol diamine C: 4,4'-diamino-2,2'-ditrifluoromethyl-1,1'-biphenyl, the The mixture was stirred at room temperature to dissolve the diamine and obtain a clear solution, then slowly added 0.5 mol dianhydride A: 4,4-hexafluoroisopropylphthalic anhydride, 0.5 mol dianhydride B: 1,2,4, 5-cyclohexanetetracarboxylic dianhydride reacts with diamine, continues to add 0.015mol 4,4-hexafluoroisopropyl phthalic anhydride to end-capping, and then stirs the mixture in an ice-water bath for 24 hours to obtain a viscosity of 2000poise of polyamic acid solution, then add 0.0012mol trometamol and 0.0006mol D-glucosamine, mix well to obtain polyamic acid solution.

[0046] (2) Stir the polyamic acid solution obtained in step (1) with 0.0...

Embodiment 2-6

[0048] The difference from Example 1 is that the amount of some compounds in Examples 2-6 is different from that in Example 1, as shown in Table 1, and the rest are the same.

[0049] Table 1.

[0050]

Embodiment 7-11

[0052] The difference from Example 1 is that the types of some compounds in Examples 7-11 are different from those in Example 1, as shown in Table 2, and the rest are the same.

[0053] Table 2.

[0054]

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

PropertyMeasurementUnit
transmittivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a transparent polyimide film with excellent performance and a preparation method thereof, and relates to the technical field of organic film manufacture. The polyimide film is formed by polycondensation of a specific diamine and dianhydride, and contains an amino-terminated polyhydroxy compound, and the molar ratio of the diamine, dianhydride and amino-terminated polyhydroxy compound is 1:1-1.02:0.0011 ‑0.0024, prepared by a two-step method. The polyimide film has excellent optical properties, bending resistance, smaller water drop contact angle and better surface wettability.

Description

technical field [0001] The invention relates to the technical field of organic film manufacturing, in particular to a transparent polyimide film with excellent performance and a preparation method thereof. Background technique [0002] With the rapid development of foldable and flexible displays, optoelectronic devices are gradually showing the trend of large size, light weight, ultra-thin and flexible. Traditional transparent substrate materials are usually glass and transparent polymer materials. The hard and brittle nature of glass makes it difficult to process and bend freely in large and thin applications, so it cannot meet the development requirements of future flexible packaging technology. Transparent polymer materials such as polyethylene terephthalate (PET), polycarbonate (PC), polymethyl methacrylate (PMMA), polystyrene (PS), etc., despite excellent optical transparency However, the heat resistance is not enough (glass transition temperature does not exceed 220°...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/10C08J5/18C08L79/08
CPCC08G73/1017C08G73/1039C08G73/105C08G73/1064C08G73/1067C08G73/1075C08G73/1078C08J5/18C08J2379/08
Inventor 任茜王振中蒙义华
Owner RAYITEK HI TECH FILM CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com