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

Method for preparing natural polymer matrix light-cured resin

A natural polymer, curing resin technology, applied in the field of photocurable materials, can solve problems such as deficiencies, and achieve the effects of improving comprehensive performance, improving photocrosslinking reaction efficiency, and enhancing interaction and coalescence strength.

Active Publication Date: 2014-02-05
HUAZHONG AGRI UNIV
View PDF2 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nano-natural polymer materials such as nano-cellulose, chitin nano-crystals, nano-scale starch micro-crystals and konjac glucomannan are almost composed of units similar to glucose structures, each structural unit has a large number of hydroxyl groups and amino groups , this unique structure allows it to react with the half-capped prepolymer containing -NCO groups, thereby introducing it into the photocurable resin. The introduction of this material can improve some properties of the photocurable resin: such as hardness , Scratch resistance, wear resistance, adhesion, thermal stability, etc. However, the research based on nanometer natural polymer materials and resin modified synthetic photocuring is very lacking.

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 natural polymer matrix light-cured resin
  • Method for preparing natural polymer matrix light-cured resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A preparation method of a natural polymer-based photocurable resin, comprising the following steps:

[0035] 1) Using butyl acetate as the reaction solvent and dibutyltin dilaurate as the catalyst, fully react isophorone diisocyanate (IPDI) and polyethylene glycol (PEG400), and then add hydroquinone (blocking Polymerization agent) and hydroxyethyl methacrylate (HEMA) are fully reacted to obtain semi-terminated polyurethane prepolymer. The specific operations are as follows:

[0036] Add 0.2mol isophorone diisocyanate (IPDI) and 15ml butyl acetate to a 250ml four-necked flask equipped with a stirrer, a thermometer and a condensation reflux tube, add 0.1mol dropwise with a dropping funnel while stirring at room temperature, and remove by molecular sieve Polyethylene glycol (PEG400) in water and 0.4229g dibutyltin dilaurate (0.5% of the total mass of isophorone diisocyanate and PEG400) were added dropwise and reacted at 80°C for 3 hours; 0.013g of hydroquinone (accounting...

Embodiment 2

[0042] A preparation method of a natural polymer-based photocurable resin, comprising the following steps:

[0043]1) Using ethyl acetate as the reaction solvent and stannous octoate as the catalyst, fully react dimethylene phenyl diisocyanate and polytetrahydrofuran diol 1400, and then add p-methoxyphenol (polymerization inhibitor) and methyl alcohol. Hydroxypropyl acrylate is fully reacted to obtain a semi-terminated polyurethane prepolymer, and the specific operations are as follows:

[0044] In a 500ml four-necked flask equipped with a stirrer, a thermometer and a condensing reflux tube, 0.2mol of dimethylene phenyl diisocyanate and 15ml of ethyl acetate were added, and 0.1 mol of water removed by molecular sieve was added dropwise with a dropping funnel while stirring at room temperature. mol polytetrahydrofuran diol 1400 and 1.2432g stannous octoate (accounting for 0.7% of the total mass of dimethylene phenyl diisocyanate and polytetrahydrofuran diol), react at 40 ° C fo...

Embodiment 3

[0053] A preparation method of a natural polymer-based photocurable resin, comprising the following steps:

[0054] 1) Using propyl acetate as the reaction solvent and dibutyltin dilaurate as the catalyst, fully react isophorone diisocyanate (IPDI) and polyethylene glycol (PEG600), and then add hydroquinone (blocking polymerizing agent) and hydroxyethyl acrylate to fully react to obtain a semi-terminated polyurethane prepolymer. The specific operations are as follows:

[0055] Add 0.2mol isophorone diisocyanate (IPDI) and 15ml propyl acetate to a 250ml four-necked flask equipped with a stirrer, a thermometer and a condensing reflux tube, and use a dropping funnel to drop the water-removed molecular sieve solution at room temperature while stirring. Polyethylene glycol (PEG600) 0.1mol and 0.6275g dibutyltin dilaurate (accounting for 0.6% of the total mass of isophorone diisocyanate and PEG400.), react at 40°C after the dropwise addition; 0.0413 g of hydroquinone (accounting fo...

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 natural polymer matrix light-cured resin. The method comprises the following steps: (1) leading polyisocyanate, oligomer polyol and hydroxyl-containing acrylate to react according to a certain molar ratio to prepare a semi-end-blocked prepolymer; (2) dispersing a natural polymer nano-material in a solvent, and adding the semi-end-blocked prepolymer prepared in the step 1 to obtain a full-end-blocked prepolymer; (3) mixing the full-end-blocked prepolymer and a photo-initiator to prepare the natural polymer matrix resin with excellent performance under ultraviolet radiation. The method adopts the natural polymer material as a raw material, and has the advantages that: the prepared light-cured resin has high molecular weight and viscosity, the interaction and coagulation strength among resin molecules can be enhanced, the photo-crosslinking reaction efficiency can be improved, the strength and attachment performance of a curing film can be improved, the cost is low, the process is simple and controllable, and the product is more environment-friendly.

Description

technical field [0001] The invention belongs to the field of photocurable materials, and relates to a preparation method of a photocurable resin, in particular to a preparation method of a natural polymer-based photocurable resin. Background technique [0002] As a new and advanced material surface treatment technology, light-curing technology has achieved rapid development since its industrialization in the 1960s. widely. At present, almost all light-curable resins are derived from chemical reagents related to petroleum resources. In order to improve the mechanical properties of the surface of the photocurable coating, such as surface hardness, wear resistance, scratch resistance, etc., some researchers have introduced some inorganic substances, such as talc, glass microspheres, and silica. However, the above methods have problems such as the dispersion of inorganic fillers and the difficulty of modification, resulting in the insignificant improvement of the surface mecha...

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 Applications(China)
IPC IPC(8): C08F299/06C08F2/48C08G18/67C08G18/48C08G18/64C08G18/12C08G18/83
Inventor 刘石林李唯吴悦寒梁伟伟李斌
Owner HUAZHONG AGRI 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