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Modified urea-formaldehyde resin adhesive for outdoor fiberboard and preparation method thereof

A technology of urea-formaldehyde resin and fiberboard, applied in the direction of non-polymer adhesive additives, applications, household components, etc., can solve the problems of unbearable production enterprises, markets and consumers, low production efficiency, high cost, etc., and achieve adhesive bonding Good performance, low cost, and the effect of improving the bonding strength

Inactive Publication Date: 2018-10-23
DARE WOOD BASED PANEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its high cost and low production efficiency make it unbearable for manufacturers, markets and consumers

Method used

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  • Modified urea-formaldehyde resin adhesive for outdoor fiberboard and preparation method thereof
  • Modified urea-formaldehyde resin adhesive for outdoor fiberboard and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. A melamine-phenol modified urea-formaldehyde resin for outdoor fiberboards, comprising the following raw materials in parts by mass: 57 parts of formaldehyde (37% content), 10 parts of melamine, 28 parts of urea, and 5 parts of phenol.

[0026] 2. A melamine-phenol modified urea-formaldehyde resin adhesive for outdoor fiberboards, comprising the following raw materials in parts by mass: melamine, 93 parts of phenol-modified urea-formaldehyde resin, 5 parts of isocyanate prepolymer, and 2.0 parts of ammonium sulfate.

Embodiment 2

[0028] 1. A melamine-phenol modified urea-formaldehyde resin for outdoor fiberboards, comprising the following raw materials in parts by mass: 52 parts of formaldehyde (37% content), 11 parts of melamine, 31 parts of urea, and 6 parts of phenol.

[0029] 2. A melamine-phenol modified urea-formaldehyde resin adhesive for outdoor fiberboards, comprising the following raw materials in parts by mass: melamine, 90 parts of phenol-modified urea-formaldehyde resin, 8 parts of isocyanate prepolymer, and 1.5 parts of ammonium sulfate.

Embodiment 3

[0031] 1. The weight and parts of melamine-phenol modified urea-formaldehyde resin for outdoor fiberboard are: 51 parts of formaldehyde (37% content), 12 parts of melamine, 30 parts of urea, and 7 parts of phenol.

[0032] 2. The weight and parts of a melamine-phenol-modified urea-formaldehyde resin adhesive for outdoor fiberboards are: 89 parts of melamine and phenol-modified urea-formaldehyde resin, 10 parts of isocyanate prepolymer, and 1.0 part of ammonium sulfate.

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Abstract

The invention relates to a urea-formaldehyde resin adhesive, especially to a modified urea-formaldehyde resin adhesive for an outdoor fiberboard and a preparation method thereof, belonging to the technical field of adhesives for artificial fiberboards. The adhesive disclosed in the invention comprises the following raw materials by mass: 85-95 parts of melamine-phenol modified urea-formaldehyde resin, 5-10 parts of an isocyanate prepolymer (EMDI), and 1.0-3.0 parts of ammonium sulfate. The invention also discloses a preparation method and application of the modified urea-formaldehyde resin adhesive for the outdoor fiberboard. The modified urea-formaldehyde resin adhesive for the outdoor fiberboard of the invention has good cementing performance and low cost. In the hot pressing process ofthe fiberboard, the modified urea-formaldehyde resin adhesive prepared through glue blending is sprayed onto fibers, stable chemical bonds are formed between the isocyanate prepolymer, the resin and the wood fibers, so the cementing strength, water resistance and aging resistance of the adhesive are further improved. With the adhesive, outdoor fiberboards meeting requirements prescribed in Standards GB / T 11718-2009 for Medium-Density Fiberboards can be produced.

Description

technical field [0001] The invention belongs to the technical field of adhesives for artificial fiberboards, and relates to urea-formaldehyde resin adhesives, in particular to a modified urea-formaldehyde resin adhesive for outdoor fiberboards and a preparation method thereof. Background technique [0002] According to the conditions of use, according to the classification of my country's national standard "GB / T 11718-2009 Medium Density Fiberboard Standard", outdoor fiberboard refers to the type that can withstand the aging effect of outdoor climate conditions, water immersion, or withstand the damp heat of water vapor in a ventilated place. MDF, mainly suitable for outdoor conditions. Outdoor MDF is mainly used in road signs, commercial signs, advertising posters, garden furniture components, sports field assemblies, cabin partitions, door and window panels, outdoor decoration panels, outdoor wall panels, mobile room wall panels, Manufacture of concrete formwork, etc. Out...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/34C09J175/04C09J11/04C08G14/10C08G14/08B27N3/00B27N3/04
CPCC09J161/34B27N3/002B27N3/04C08G14/08C08G14/10C09J11/04C08L75/04C08K2003/3054
Inventor 史国祥
Owner DARE WOOD BASED PANEL GRP
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