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

Method for preparing high-performance cellulose/resin composite film by UV curing process

A light-curing resin and resin composite technology, which is applied in the field of preparing regenerated cellulose/resin composite films, can solve the problem that the cellulose fibers are not strictly arranged in one direction, the diameter of electrospun cellulose is not uniform, and the light transmission is affected and mechanical properties, to achieve excellent mechanical properties, simple preparation methods, and improved mechanical properties

Inactive Publication Date: 2012-11-28
JIANGNAN UNIV
View PDF2 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past research on the composite of cellulose and resin, due to the poor dispersion of cellulose in the resin, its application was greatly limited
Some researchers can obtain a high-performance cellulose film by using a composite system formed by natural cellulose nanofibers and epoxy resin, but the light transmittance of the film is poor, and its light transmittance can reach 71% after polishing ( Masaya Nogi, Shinichiro Iwamoto, Antonio Norio Nakagaito, and Hiroyuki Yano, Optically Transparent Nanofiber Paper, Adv. Mater. 2009, 21, 1595-1598)
Liao et al prepared an optically transparent cellulose / epoxy resin composite film by combining epoxy resin with unidirectionally arranged electrospun cellulose, but the diameter of the electrospun cellulose prepared by this method is not uniform, Moreover, the obtained cellulose fibers are not strictly arranged in one direction, which affects their uniform distribution in the resin, and further affects their light transmittance and mechanical properties (Aligned electrospun cellulose fibers reinforced epoxy resin composite films with high visible light transmittance.Liao Huangqiang , Wu Yiqiong, Zhan Xianrong, Liu Haiqing, Cellulose 2011, 19, 111-119.)

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
  • Method for preparing high-performance cellulose/resin composite film by UV curing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A regenerated cellulose film was prepared by dissolving natural cellulose with a degree of polymerization of 500 in a NaOH / urea / water (7wt% / 12wt% / 81wt%) solvent system to obtain a 4wt% cellulose solution. The cellulose membrane is washed with water to remove inorganic salts and other impurities, and then the water therein is gradually replaced with acetone solvent. Then it is immersed in polyurethane acrylic resin 6112-100 photocurable resin / photoinitiator 184 (1-hydroxycyclohexyl phenyl ketone) / acetone solution (photocurable resin content 5%, photoinitiator content 2%) 2 Hour. At this point the mixed solution can penetrate into the cellulose membrane. Then it was taken out, cured under ultraviolet light for 10 minutes, and then dried to obtain a cellulose composite film.

Embodiment 2

[0020] Adopt NaOH / urea / water (7wt% / 12wt% / 81wt%) solvent system, method is the same as embodiment 1. The cellulose membrane is washed with water to remove inorganic salts and other impurities, and then the water therein is gradually replaced with acetone solvent. Then it is immersed in polyurethane acrylic resin 6112-100 photocurable resin / photoinitiator 184 (1-hydroxycyclohexyl phenyl ketone) / acetone solution (photocurable resin content 15%, photoinitiator content 3%) 4 Hour. At this point the mixed solution can penetrate into the cellulose membrane. Then it was taken out, cured under ultraviolet light for 20 minutes, and then dried to obtain a cellulose composite film.

Embodiment 3

[0022] Adopt NaOH / urea / water (7wt% / 12wt% / 81wt%) solvent system, method is the same as embodiment 1. The cellulose membrane is washed with water to remove inorganic salts and other impurities, and then the water therein is gradually replaced with acetone solvent. Then it is immersed in polyurethane acrylic resin 6112-100 photocurable resin / photoinitiator 184 (1-hydroxycyclohexyl phenyl ketone) / acetone solution (photocurable resin content 35%, photoinitiator content 3%) 7 Hour. At this point the mixed solution can penetrate into the cellulose membrane. Then it was taken out, cured under ultraviolet light for 30 minutes, and then dried to obtain a cellulose composite film.

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

No PUM Login to View More

Abstract

The invention discloses a method for preparing a high-performance cellulose / resin composite film by a UV curing process, which comprises the following steps: washing prepared a regenerated cellulose film with water, replacing water in the film with an organic solvent (such as methanol, ethanol, acetone or the like), immersing the film in a photocuring resin / photoinitiator mixed solution for 2-12 hours, and photocuring under UV irradiation to obtain the high-performance cellulose / resin composite film. The method is simple to operate, and has the characteristics of high efficiency, energy saving and environmental protection; and the prepared product has favorable light transmission and mechanical properties, and has wide application prospects in the fields of packaging, solar energy, flexible electronic materials and the like.

Description

technical field [0001] The invention relates to a method for preparing a regenerated cellulose / resin composite film by photocuring. The prepared composite film can be widely used in the field of polymer materials, including packaging of food, medicine, clothing, etc., and flat panel display substrates. Background technique [0002] With the gradual depletion of petroleum resources and the deteriorating environmental problems, it is more and more important to develop renewable natural polymer materials to replace traditional petrochemical products. As the most abundant biomass on earth, cellulose has broad application prospects. Regenerated cellulose film has high light transmittance, mechanical strength and modulus, but due to its good hydrophilicity, its mechanical properties will be seriously affected after moisture absorption, which limits its application range. In order to improve its performance, it is usually first chemically modified to obtain cellulose derivatives,...

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
IPC IPC(8): C08J7/12C08J7/02C08L1/02
Inventor 刘石林陶丹丹胡楠楠刘敬成刘仁张胜文刘晓亚
Owner JIANGNAN UNIV
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