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

Grafting copolymer type adhesive, preparation method and application thereof as well as manufacturing method for artificial board

A copolymerization and adhesive technology, applied in the direction of graft polymer adhesives, adhesives, wood veneer bonding, etc., can solve the problems of poor wettability, graft copolymerization adhesives prone to condensation, and inconvenient use. , to achieve the effect of increasing the strength

Active Publication Date: 2018-07-24
FUJIAN HEQIZU FORESTRY SCI & TECH CO LTD
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high viscosity of the graft copolymerization adhesive, the graft copolymerization adhesive is prone to retrogradation, poor wettability and inconvenient use during use.

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

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The present invention also provides the preparation method of graft copolymerization adhesive, comprises the following steps:

[0030] (1) Dialdehyde starch solution and polyvinyl alcohol mixed solution are provided;

[0031] (2) mixing the polyvinyl alcohol mixed solution, the dialdehyde starch solution and vinyl acetate in the step (1), and carrying out a crosslinking reaction to obtain a precursor solution;

[0032] (3) mixing the precursor solution in the step (2) with the initiator and N-methylolacrylamide, and performing a crosslinking reaction to obtain a mixed solution;

[0033] (4) Mix the mixed solution obtained in the step (3) with urea and borax, and carry out a neutralization reaction to obtain a graft copolymerization adhesive.

[0034] The invention provides a dialdehyde starch solution. In the present invention, the mass concentration of the dialdehyde starch solution is preferably 30-50%, more preferably 32%-45%, more preferably 35-40%. In the presen...

Embodiment 1

[0093] 1. Preparation of graft copolymerization adhesive:

[0094] (1) Prepare a polyvinyl alcohol mixed solution with a mass fraction of 5%, keep the solution temperature at 85°C, add sodium dodecyl sulfonate, and keep warm for 40 minutes, wherein the amount of sodium dodecyl sulfonate is mixed with polyvinyl alcohol 5% of the mass fraction of the solution.

[0095] (2) Prepare a starch solution with a mass fraction of 30%, adjust the pH of the solution to 3.5, keep the solution temperature at 50°C, add an ammonium persulfate initiator to pre-initiate starch denaturation, and keep warm for 40 minutes to obtain a dialdehyde starch solution, wherein the persulfate The mass ratio of ammonium to starch in the starch solution is 0.5:30.

[0096] (3) Mix the polyvinyl alcohol mixed solution with the dialdehyde starch solution, stir evenly, and then slowly add vinyl acetate monomer, keep the solution temperature at 60°C, and keep warm for 180 minutes, wherein the polyvinyl alcohol ...

Embodiment 2

[0104] 1. Preparation of graft copolymer adhesive:

[0105] (1) Prepare a polyvinyl alcohol mixed solution with a mass fraction of 10%, keep the solution temperature at 90°C, add sodium dodecyl sulfonate, and keep warm for 30 minutes, wherein the amount of sodium dodecyl sulfonate is mixed with polyvinyl alcohol 10% of the mass fraction of the solution.

[0106] (2) Prepare a starch solution with a mass fraction of 35%, adjust the pH of the solution to 4.5, keep the solution temperature at 60° C., add ammonium persulfate initiator to pre-initiate starch denaturation, and keep warm for 30 minutes to obtain a dialdehyde starch solution, wherein persulfate The mass ratio of ammonium to starch in the starch solution is 1.5:35.

[0107] (3) Mix the polyvinyl alcohol mixed solution with the dialdehyde starch solution, stir evenly, and then slowly add vinyl acetate monomer, keep the solution temperature at 70°C, and keep warm for 165 minutes, wherein the polyvinyl alcohol and dialde...

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
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method for a grafting copolymer type adhesive, and the preparation method comprises the following steps: providing a dialdehyde starch solution and a polyvinyl alcohol mixed solution; mixing the polyvinyl alcohol mixed solution, the dialdehyde starch solution and vinyl acetate, and performing cross-linking reaction to obtain precursor solution; mixing the precursor solution with an initiator and N-hydroxymethyl acrylamide, and performing cross-linking reaction to obtain a mixed solution; mixing the mixed solution with urea and borax, and performing neutralizing reaction to obtain the grafting copolymer type adhesive. The grafting copolymer type adhesive prepared by the method is free of formaldehyde release and is relatively high in viscosity. The invention further provides the grafting copolymer type adhesive prepared by the preparation method and application of the adhesive in an artificial board manufacturing process. Besides, the invention further provides a manufacturing method for an artificial board, and the artificial board has the characteristics of being light and high in strength.

Description

technical field [0001] The invention relates to the field of adhesives, in particular to a graft copolymerized adhesive, a preparation method and application thereof, and a preparation method of an artificial board. Background technique [0002] Adhesives are widely used in construction decoration, furniture manufacturing, transportation and other industries. Most of the adhesives are synthetic resin adhesives, namely urea-formaldehyde resin, phenolic resin and melamine-formaldehyde resin. The release of free formaldehyde has a serious impact on indoor and outdoor homes and the healthy environment. With the implementation of national environmental protection laws and regulations, strengthening supervision and management, protecting and improving the environment has become an inevitable trend in the development of adhesives. Formaldehyde-free environmentally friendly adhesives are an important research direction, and graft copolymerization adhesives are one of the most potent...

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): C09J151/00C09J151/02C09J11/06C09J11/04C08G81/02C08F251/00C08F218/08C08F220/58B27D1/08B27G11/00
Inventor 侯伦灯郑忠福吴黄贵俞艳郭福思
Owner FUJIAN HEQIZU FORESTRY SCI & TECH 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