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

Polyvinyl alcohol coating film-forming solution for coating composite film and its preparation method and application

A polyvinyl alcohol and composite film technology, which is applied in the field of polyvinyl alcohol coating film-forming solution and its preparation to achieve the effects of improving composite quality, improving water resistance and moisture resistance, and stabilizing application performance

Active Publication Date: 2018-04-13
SHENGZHEN SAILONG FIBERGLASS CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since polyvinyl alcohol is a completely water-soluble polymer material, its chemical properties are extremely polar and hydrophilic, which also makes it subject to many restrictions in the preparation of high-barrier performance composite films and in applications.

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
  • Polyvinyl alcohol coating film-forming solution for coating composite film and its preparation method and application
  • Polyvinyl alcohol coating film-forming solution for coating composite film and its preparation method and application
  • Polyvinyl alcohol coating film-forming solution for coating composite film and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The ratio of each combination of modified polyvinyl alcohol:

[0038]

[0039]

[0040] After the above-mentioned components are measured in proportion, first dissolve polyvinyl alcohol 2099 in water and heat to 90-95°C to fully dissolve. The ratio of polyvinyl alcohol 2099 to water is 8:92 (weight ratio). After fully dissolving the polyvinyl alcohol aqueous solution, keep the solution temperature at 60°C and stir, start adding hydrogen peroxide dropwise for 60 minutes; after adding the hydrogen peroxide, raise the temperature to 80°C and continue the reaction for 30 minutes. Then use triethylamine to adjust the pH of the solution to 10.0, add the carbonamide measured above while maintaining the solution temperature at 80°C, and carry out the methylolation reaction at 80°C for 60 minutes; cooling to room temperature is a coating compound of the present invention. The film-forming solution is coated with polyvinyl alcohol (PVA) for the film, and the permeability of...

Embodiment 2

[0042] The ratio of each combination of modified polyvinyl alcohol:

[0043]

[0044]After the above-mentioned components are measured in proportion, first dissolve polyvinyl alcohol 1799 and polyvinyl alcohol 0599 in water, and heat to 90-95°C to fully dissolve. The ratio of polyvinyl alcohol to water is 15:85 (weight ratio) . After fully dissolving the polyvinyl alcohol aqueous solution, keep the solution temperature at 70°C and stir, start adding hydrogen peroxide dropwise for 45 minutes; after adding the hydrogen peroxide, raise the temperature to 75°C and continue the reaction for 45 minutes. Then use diethylamine to adjust the pH of the solution to 9.0, add the carbonamide measured above while maintaining the solution temperature at 75°C, and carry out the methylolation reaction at 75°C for 80 minutes; then cooling to room temperature is a coating of the present invention. The polyvinyl alcohol (PVA) that composite film is used is coated with film-forming solution, a...

Embodiment 3

[0046] The ratio of each combination of modified polyvinyl alcohol:

[0047]

[0048] After the above-mentioned components are measured in proportion, first dissolve polyvinyl alcohol 2488 and polyvinyl alcohol 0588 in water, and heat to 90-95°C to fully dissolve. The ratio of polyvinyl alcohol to water is 12:88 (weight ratio) . After fully dissolving the polyvinyl alcohol aqueous solution, keep the solution temperature at 80°C and stir, start adding hydrogen peroxide dropwise for 60 minutes; after adding the hydrogen peroxide, cool down to 75°C and continue the reaction for 60 minutes. Then use triethanolamine to adjust the pH of the solution to 8.0, add the carbonamide measured above while maintaining the solution temperature at 75°C, and carry out the methylolation reaction at 75°C for 90 minutes; The film-forming solution is coated with polyvinyl alcohol (PVA) for the film, and the permeability of the composite film to oxygen is 8.8cm after film-forming with this coati...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to polyvinyl alcohol coating film-forming solution for coating composite films, a method for preparing the polyvinyl alcohol coating film-forming solution and application thereof. The method includes completely dissolving polyvinyl alcohol in water, oxidizing partial hydroxyl in the polyvinyl alcohol by means of oxidation reaction and generating chemically active aldehyde groups from the partial oxidized hydroxyl; carrying out similarly hydroxymethyl reaction on obtained solution and amide substances under alkaline conditions to generate similarly hydroxymethyl derivatives. The polyvinyl alcohol coating film-forming solution, the method and the application have the advantages that condensation reaction is carried out on the similarly hydroxymethyl derivatives to form partially self-crosslinking formed films in coating film-forming procedures at the temperatures of 80-100 DEG C; the composite films are excellent in oxygen barrier property after the modified polyvinyl alcohol (PVA) is coated and the films are formed, and the composite films are particularly excellent in barrier property under the condition of high humidity as compared with polyvinyl alcohol (PVA) films which are not modified.

Description

technical field [0001] The invention relates to a polyvinyl alcohol (PVA) coating film-forming solution, in particular to a polyvinyl alcohol (PVA) coating film-forming solution for coating a composite film and a preparation method thereof. Background technique [0002] Polyvinyl alcohol (PVA) is a material with high barrier performance, especially at low humidity, its barrier performance is almost comparable to that of metal aluminum, and it is different from other barrier materials commonly used in the production of composite films (such as EVOH, PVDC, etc. ) Compared with polyvinyl alcohol (PVA), the oxygen barrier performance of polyvinyl alcohol (PVA) can reach 8-10 times of these barrier materials; and polyvinyl alcohol (PVA) has excellent film-forming properties at the same time, so it is a kind of preparation with high barrier performance Composite film material. However, since polyvinyl alcohol is a completely water-soluble polymer material, its chemical properties...

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): C08F8/06C08F8/30C08F16/06C08J5/18
CPCC08F8/06C08F8/30C08J5/18C08J2329/04C08F16/06
Inventor 崔跃飞
Owner SHENGZHEN SAILONG FIBERGLASS CO LTD
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