Weather-resistant composite urea resin and production method thereof

A technology of urea-formaldehyde resin and weather resistance, which is applied in the field of weather-resistant composite urea-formaldehyde resin and its production, which can solve the problems of poor water resistance, warping and deformation of boards, etc., and achieve the effect of increasing the solid content of glue, increasing the strength and strengthening the strength of wood boards

Inactive Publication Date: 2017-01-04
南宁市创锦胶合板有限责任公司
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned technical defects, the purpose of the present invention is to provide a weather-resistant composite urea-formaldehyde resin and its production method, which can solve the problem of poor water resistance of wood-based panels made of raw materials such as straws and nut shells, and differences in swelling force after moisture absorption. To solve the problem of warping and deforming the board, develop a weather-resistant composite urea-formaldehyde resin with strong water resistance, high bond strength, low formaldehyde residual, and good weather resistance

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
  • Weather-resistant composite urea resin and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A weather-resistant composite urea-formaldehyde resin is composed of the following raw materials in parts by weight:

[0050] 50 parts of melamine modified urea-formaldehyde resins;

[0051] 20 parts of oxidized starch;

[0052] 1 part polyvinyl alcohol;

[0053] 3 parts hydrogenated rosin;

[0054] 2 parts of propylene glycol polyoxypropylene polyvinyl ether;

[0055] 4 parts polyisocyanate;

[0056] 0.5 parts of isobutyltriethoxysilane;

[0057] 5 parts of phenolized lignin;

[0058] 100 parts of water;

[0059] 1 part UV absorber;

[0060] Antioxidant 1 part.

[0061] The ultraviolet absorber is nano titanium dioxide.

[0062] Described antioxidant is dibutyl hydroxytoluene.

[0063] A production method of a weather-resistant composite urea-formaldehyde resin: first put clear water in parts by weight into a reaction kettle, heat it to 80°C, and then add parts by weight of hydrogenated rosin, isobutyltriethoxysilane, nano-titanium dioxide, Dibutyl hydroxyto...

Embodiment 2

[0065] A weather-resistant composite urea-formaldehyde resin is composed of the following raw materials in parts by weight:

[0066] 70 parts of melamine modified urea-formaldehyde resins;

[0067] 24 parts of oxidized starch;

[0068] 2 parts polyvinyl alcohol;

[0069] 5 parts hydrogenated rosin;

[0070] 2.4 parts of propylene glycol polyoxypropylene polyvinyl ether;

[0071] 5 parts of polyisocyanate;

[0072] 2 parts of isobutyltriethoxysilane;

[0073] 7 parts of phenolized lignin;

[0074] 140 parts of water;

[0075] 1.4 parts of ultraviolet absorber;

[0076] Antioxidant 1.4 parts.

[0077] The ultraviolet absorber is nano titanium dioxide.

[0078] Described antioxidant is dibutyl hydroxytoluene.

[0079] A method for producing a weather-resistant composite urea-formaldehyde resin: first put clear water in parts by weight into a reaction kettle, heat it to 85°C, and then add parts by weight of hydrogenated rosin, isobutyltriethoxysilane, nano-titanium dioxi...

Embodiment 3

[0081] A weather-resistant composite urea-formaldehyde resin is composed of the following raw materials in parts by weight:

[0082] 90 parts of melamine modified urea-formaldehyde resins;

[0083] 27 parts of oxidized starch;

[0084] 2.5 parts of polyvinyl alcohol;

[0085] 7 parts of hydrogenated rosin;

[0086] 2.7 parts of propylene glycol polyoxypropylene polyvinyl ether;

[0087] 5.5 parts of polyisocyanate;

[0088] 4 parts of isobutyltriethoxysilane;

[0089] 8 parts of phenolized lignin;

[0090] 170 parts of water;

[0091] 1.7 parts of ultraviolet absorber;

[0092] Antioxidant 1.7 parts.

[0093] The ultraviolet absorber is nano titanium dioxide.

[0094] Described antioxidant is dibutyl hydroxytoluene.

[0095] A production method of a weather-resistant composite urea-formaldehyde resin: first put clear water in parts by weight into a reaction kettle, heat it to 90°C, and then add parts by weight of hydrogenated rosin, isobutyltriethoxysilane, nano-tita...

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
shear strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
shear strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses weather-resistant composite urea resin and a production method thereof. The weather-resistant composite urea resin comprises the following raw materials: melamine modified urea-formaldehyde resin, oxidized starch, polyvinyl alcohol, hydrogenated rosin, polyoxyethylene polyoxypropylene propylene glycol ether, polyisocyanate, triethoxyisobutylsilane, phenolic lignin, clean water, an ultraviolet light absorber and an antioxidant. The production method comprises the following steps: firstly adding the clean water into a reaction kettle, and heating to the temperature of 80-100 DEG C; adding the oxidized starch, the triethoxyisobutylsilane, the ultraviolet light absorber, the antioxidant and the polyoxyethylene polyoxypropylene propylene glycol ether, stirring for 10-30 minutes, adding polyvinyl alcohol and phenolic lignin for dissolving, adding melamine modified urea-formaldehyde resin and oxidized starch, maintaining the temperature of 80-90 DEG C, stirring and reacting for 2-5 hours, adding polyisocyanate within 10-20 minutes before use, and uniformly mixing and stirring, thereby obtaining the product. The weather-resistant composite urea resin disclosed by the invention is high in water resistance, high in bonding strength, low in residual formaldehyde volume and high in weather resistance and serves as a main adhesive of artificial boards, and the weather resistance of the artificial boards can be improved.

Description

technical field [0001] The invention belongs to the field of adhesive production, in particular to a weather-resistant composite urea-formaldehyde resin and a production method thereof. Background technique [0002] With the development of China's economy and the improvement of people's living standards, the requirements for home decoration are also constantly increasing. Because of its natural and beautiful texture and good texture, wooden floor has become the first choice material for home floor decoration. Solid wood composite flooring overcomes the shortcomings of solid wood flooring wet expansion and shrinkage, has good dimensional stability, and at the same time retains the natural wood grain and comfortable foot feel of solid wood flooring, thus becoming an important variety in flooring. The production of solid wood composite flooring The amount of urea-formaldehyde resin floor glue used has also increased. Urea-formaldehyde resin or modified urea-formaldehyde resin...

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 & AuthorityApplications(China)
IPC IPC(8): C08L61/32C08L3/10C08L29/04C08L93/04C08L97/00C08L71/02C08K3/22C08K5/13C08K5/5419
CPCC08K2201/011C08L61/32C08L2205/035C08L2205/06C08L3/10C08L29/04C08L93/04C08L97/005C08L71/02C08K2003/2241C08K5/13C08K5/5419
Inventor张一甫王飞虎胡海强唐贤明蓝玉姣
Owner南宁市创锦胶合板有限责任公司