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

A high adhesion toughening primer for transparent pi substrates

A technology of high adhesion and primer, applied in the direction of coating, primer, polyether coating, etc., can solve problems such as high warpage, toughness deviation, cracks, etc., and achieve the effect of dispersing interlayer stress and high adhesion

Active Publication Date: 2021-08-10
新纶光电材料(常州)有限公司 +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a high-hardness hardened coating is selected, problems of high warpage and deviation of toughness usually occur, and cracks may appear when the elongation at break is 1%.

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 high adhesion toughening primer for transparent pi substrates
  • A high adhesion toughening primer for transparent pi substrates
  • A high adhesion toughening primer for transparent pi substrates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3 and comparative example 1-3

[0033] 1) each component ratio table of embodiment and comparative example undercoating:

[0034]

[0035]Note: The Tg of custom-made low Tg acrylic resin A is -27°C, and the Tg of Photomer 6628 (IGM) is 80°C.

[0036] 2) Preparation method of customized low Tg acrylic resin A:

[0037] Weigh 25kg of n-butyl acrylate, 8kg of isooctyl acrylate, 3kg of 2-hydroxyethyl acrylate, 8kg of methyl methacrylate, 6kg of acrylic acid, 0.3kg of initiator BPO, 10kg of methyl isobutyl ketone, ethyl acetate Mix 20kg of ester and 10kg of butyl acetate fully for later use, add 1 / 3 of the above mixed liquid to the bottom of the kettle, heat up to 80°C, react for 1 hour, slowly add the remaining 2 / 3 dropwise for 3 hours, and keep it warm for 1 hour. Add 0.5 kg of initiator and 10 kg of butyl acetate, keep the temperature for 2 hours, cool down to 50°C, filter the material with a 100-mesh filter element, and obtain a customized low Tg acrylic resin A. Its glass transition temperature is -27°C...

Embodiment 4-6 and comparative example 4-6

[0056] 1) each component ratio table of embodiment and comparative example undercoating:

[0057]

[0058] Note: The Tg of custom low Tg acrylic resin B is -8°C, custom low Tg acrylic resin

[0059] The Tg of C is -55°C, the Tg of Photomer 4335 (IGM) is 100°C, and the Tg of Photomer 5429 (IGM) is 45°C.

[0060] 2) Preparation method of customized low Tg acrylic resin B:

[0061] Weigh 13kg of n-butyl acrylate, 12kg of isooctyl acrylate, 3kg of 2-hydroxyethyl acrylate, 16kg of methyl methacrylate, 6kg of acrylic acid, 0.3kg of initiator BPO, 10kg of methyl isobutyl ketone, ethyl acetate Mix 20kg of ester and 10kg of butyl acetate fully for later use, add 1 / 3 of the above mixed liquid to the bottom of the kettle, heat up to 80°C, react for 1 hour, slowly add the remaining 2 / 3 dropwise for 3 hours, and keep it warm for 1 hour. Add 0.5 kg of initiator and 10 kg of butyl acetate, keep the temperature for 2 hours, cool down to 50°C, filter the material with a 100-mesh filter el...

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
thicknessaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
glass transition temperatureaaaaaaaaaa
Login to View More

Abstract

The invention provides a high adhesion toughened primer for transparent PI substrates. The formula of the primer includes the following parts by weight: 10 parts of low Tg high adhesion resin, 5 to 25 parts of high Tg high hardness resin, aliphatic 1~8 parts of epoxy resin, 0.5~3 parts of curing agent, 0.1~0.5 parts of photoinitiated free radical initiator, 0.1~0.5 parts of photoinitiated cationic initiator, and 150~250 parts of diluent. The invention proposes a high adhesion toughening primer for a transparent PI base material, which not only has high adhesion, but also can disperse interlayer stress.

Description

technical field [0001] The invention belongs to the technical field of composite coatings, and in particular relates to a high-adhesion toughening primer for transparent PI substrates. Background technique [0002] As one of the important components of the 5G era, flexible display technology has attracted increasing attention. At present, flexible display covers mainly include transparent PI (polyimide) hardened film and ultra-thin glass. Among them, the transparent PI hardened film has better bending performance. Good gradually become the current mainstream trend. Because of the large number of conjugated structures in the molecular chain of ordinary polyimide materials, its products are all yellow, and its film products usually have low transmittance and high YI value. The modification method of transparent PI is usually to introduce fluorine-containing groups into the molecular chain, fluorinate the aromatic ring, replace part of the aromatic ring with an aliphatic ring,...

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): C09D133/08C09D175/14C09D167/06C09D171/00C09D163/00C09D133/12C09D5/00C08J7/043C08L79/08
CPCC08J2379/08C08J2433/08C08J2433/12C08J2463/00C08J2475/14C08L2205/03C08L2205/04C09D5/002C09D133/066C09D167/06C09D171/00C09D175/14C08J7/043C08L75/14C08L63/00C08L33/066C08L67/06C08L71/00
Inventor 王权张毓浩苏兆梁林海赵丹鹤
Owner 新纶光电材料(常州)有限公司