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Polyamide acid solution functional protective paint as well as preparation method and application thereof

A kind of polyamic acid and the technology of making polyamic acid are applied in the direction of surface coating liquid device, semiconductor/solid-state device manufacturing, coating, etc., which can solve the limitation of display product design and diversity, fragility, and non-bendability and other problems, to achieve the effects of avoiding foaming defects, improving adhesion and heat resistance, and good film-forming properties

Inactive Publication Date: 2020-12-11
苏州聚萃材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the glass itself is thick, heavy, fragile and inflexible, limiting the design and variety of display products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] In a flask equipped with a stirrer, stirring blades, nitrogen protection and a condensation device, 74.70 g of NMP, 25.0 mmol of BPDA, 25.0 mmol of PMDA, 5.0 mmol of ODA and 45.0 mmol of pPDA were put into the flask. Then, the reaction was carried out at room temperature for 5 hours under nitrogen flow. A reaction solution having a solid content of 20.0% was obtained. The commercially available DMAc solution of silica nanoparticles and the obtained reaction solution were uniformly mixed in a ratio of 60:40 to obtain a polyamic acid solution functional protective paint with a solid content of 20.0%.

[0067] A previously prepared solution of BPDA / PMDA / pPDA=70 / 30 / 100 was coated on the substrate, and the thickness of the coating film was controlled to be 20 μm by the slit method. After drying, polyamic acid solution functional protective paint is applied, and the thickness of the coating film is also controlled by the slit method to obtain a protective layer with a thickn...

Embodiment 2

[0069] In a flask equipped with a stirrer, stirring blades, nitrogen protection and a condensation device, 74.70 g of NMP, 25.0 mmol of BPDA, 25.0 mmol of PMDA, 5.0 mmol of ODA and 45.0 mmol of pPDA were put into the flask. Then, the reaction was carried out at room temperature for 5 hours under nitrogen flow. A reaction solution having a solid content of 20.0% was obtained. The commercially available DMAc solution of silica nanoparticles and the obtained reaction solution were uniformly mixed in a ratio of 50:50 to obtain a polyamic acid solution functional protective paint with a solid content of 20.0%.

[0070] A previously prepared solution of BPDA / PMDA / pPDA=70 / 30 / 100 was coated on the substrate, and the thickness of the coating film was controlled to be 20 μm by the slit method. After drying, polyamic acid solution functional protective paint is applied, and the thickness of the coating film is also controlled by the slit method to obtain a protective layer with a thickn...

Embodiment 3

[0072] In a flask equipped with a stirrer, stirring blades, nitrogen protection and a condensation device, 74.70 g of NMP, 25.0 mmol of BPDA, 25.0 mmol of PMDA, 5.0 mmol of ODA and 45.0 mmol of pPDA were put into the flask. Then, the reaction was carried out at room temperature for 5 hours under nitrogen flow. A reaction solution having a solid content of 20.0% was obtained. The commercially available DMAc solution of silica nanoparticles and the reaction solution obtained from the reaction were uniformly mixed in a ratio of 40:60 to obtain a polyamic acid solution functional protective paint with a solid content of 20.0%.

[0073] A previously prepared solution of BPDA / PMDA / pPDA=70 / 30 / 100 was coated on the substrate, and the thickness of the coating film was controlled to be 20 μm by the slit method. After drying, polyamic acid solution functional protective paint is applied, and the thickness of the coating film is also controlled by the slit method to obtain a protective l...

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PUM

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Abstract

The invention discloses a polyamic acid solution functional protective paint, and a preparation method and application thereof. The invention particularly discloses a method for preparing polyamic acid solution functional protective paint, the polyamic acid solution functional protective paint prepared by the method, a method for preparing a film by using the polyamic acid solution functional protective paint, and application of the polyamic acid solution functional protective paint in a display substrate. The polyamide acid solution functional protective paint provided by the invention has good film-forming property, and can play a protective role when being applied to a main body film. The polyamic acid solution functional protective paint provided by the invention can effectively improve the adhesiveness and heat resistance (such as thermal decomposition temperature) of the main body film, avoids the foaming defect, and is suitable for being used as a substrate material of a flexible display.

Description

technical field [0001] The invention relates to a polyamic acid solution functional protective paint, its preparation method and its application, in particular to the functional protective paint of a polyamic acid solution as a heat-resistant polyimide precursor, its preparation method and its application. Background technique [0002] Flexible displays are light, thin, and non-fragile, and have a variety of appearances. Compared with liquid crystal displays (LCDs), organic light-emitting diode (OLED) displays have a simpler structure and are more suitable for making flexible displays. OLEDs have high luminous efficiency and high contrast, and can be widely used in mobile phones, digital cameras, navigators, commercial signs, and the like. In order to meet the requirements of low energy consumption, fast response, and high resolution, the development of active matrix OLED (AMOLED) display devices has been accelerated, thereby promoting its application in mobile phones and o...

Claims

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Application Information

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IPC IPC(8): C09D179/08C09D7/61C08G73/10G09F9/30H01L51/50H01L51/56H01L27/32B05D7/24B05D1/26
CPCC09D179/08C09D5/18C09D7/61C08G73/1071C08G73/1007G09F9/301B05D7/24B05D1/26B05D7/544C08K2201/011C08L2201/08H10K59/12H10K77/111H10K71/00C08K3/36Y02E10/549
Inventor 李臻陈超张东
Owner 苏州聚萃材料科技有限公司
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