Plywood surface glue capable of improving water resistance

A plywood and surface glue technology, applied in the direction of non-polymer adhesive additives, non-polymer organic compound adhesives, adhesives, etc., can solve problems such as expansion deformation, long curing time, and insufficient smooth surface, and achieve fast curing , The preparation process is simple and convenient, and the effect of high hydrophobicity

Inactive Publication Date: 2021-11-19
广西完美木业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a plywood surface glue with improved internal water performance, so as to solve the problems that the current plywood is easy to absorb water in the humid environment in the south and cause swelling and deformation, and the curing time is long, the surface is not smooth enough, and it is easy to store moisture in the air. The plywood surface glue prepared by the formula of the present invention has a wide range of uses, can be used as the surface glue of various plywood, and has fast curing, smooth surface, strong moisture-proof and waterproof ability, increased service life of plywood, improved utilization rate of wood resources, and reduced resources. Waste, energy saving and environmental protection

Method used

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  • Plywood surface glue capable of improving water resistance

Examples

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Effect test

Embodiment 1

[0028] A plywood surface adhesive for improving water resistance, comprising the following raw materials in parts by weight: 800 parts of phenol, 1600 parts of formaldehyde, 50 parts of sodium hydroxide, 8 parts of isoleucine, 8 parts of propyl methacrylate, and hexametaphosphoric acid 4 parts of sodium, 40 parts of polytetrafluoroethylene, 15 parts of crosslinking agent, and 15 parts of curing agent, wherein the crosslinking agent is 5 parts of acrylic acid, 10 parts of divinylbenzene, 7 parts of curing agent is imidazole, and 8 parts of isocyanate.

[0029] The preparation method of face glue, comprises the following steps:

[0030] S1: In parts by weight, weigh 800 parts of phenol, 1600 parts of formaldehyde, and 50 parts of sodium hydroxide, first add the alkali to the reaction kettle, set the stirring speed at 120rpm, and keep stirring, and introduce high temperature into the reaction kettle Steam, control the temperature in the reactor to 40°C, add phenol into the reacto...

Embodiment 2

[0036] A plywood surface adhesive for improving water resistance, comprising the following raw materials in parts by weight: 1800 parts of phenol, 2500 parts of formaldehyde, 150 parts of ammonia water, 16 parts of isoleucine, 16 parts of propyl methacrylate, and 8 parts of sodium hexametaphosphate 30 parts, 30 parts of polytetrafluoroethylene, 25 parts of crosslinking agent, 10 parts of curing agent, wherein the crosslinking agent is 10 parts of acrylic acid, 15 parts of divinylbenzene, 5 parts of curing agent is imidazole, and 5 parts of isocyanate.

[0037] The preparation method of face glue, comprises the following steps:

[0038]S1: In parts by weight, weigh 1,800 parts of phenol, 2,500 parts of formaldehyde, and 150 parts of ammonia water, first add alkali to the reaction kettle, set the stirring speed at 150rpm, and keep stirring, and pass high-temperature steam into the reaction kettle, Control the temperature in the reactor to 55°C, add phenol into the reactor and ke...

Embodiment 3

[0044] A plywood surface adhesive for improving water resistance, comprising the following raw materials in parts by weight, 1500 parts of phenol, 2300 parts of formaldehyde, 80 parts of potassium hydroxide, 12 parts of isoleucine, 12 parts of propyl methacrylate, hexametaphosphoric acid 6 parts of sodium, 35 parts of polytetrafluoroethylene, 20 parts of cross-linking agent, 13 parts of curing agent, wherein the cross-linking agent is 7 parts of acrylic acid, 13 parts of divinylbenzene, 6 parts of curing agent is imidazole, 7 parts of isocyanate.

[0045] The preparation method of face glue, comprises the following steps:

[0046] S1: In parts by weight, weigh 1,500 parts of phenol, 2,300 parts of formaldehyde, and 80 parts of potassium hydroxide, first add alkali to the reaction kettle, set the stirring speed at 150rpm, and keep stirring, and introduce high temperature into the reaction kettle Steam, control the temperature in the reactor to 50°C, add phenol into the reactor ...

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Abstract

The invention discloses plywood surface glue capable of improving water resistance. The plywood surface glue comprises the following raw materials of: phenol, formaldehyde, alkali, isoleucine, propyl methacrylate, sodium hexametaphosphate, polytetrafluoroethylene, a cross-linking agent and a curing agent, wherein the alkali is one or more of sodium hydroxide, ammonia water and potassium hydroxide, the cross-linking agent is a mixture of acrylic acid and divinyl benzene, and the curing agent is a mixture of imidazole and isocyanate. By using the latent curing agent, the surface glue is faster to cure, so that a surface is smoother; and the surface glue has waterproof performance and can be used in a humid environment for a long time, so that the water resistance and the service life of a plywood are improved, and the resource consumption is reduced; and the surface glue is energy-saving and environment-friendly.

Description

【Technical field】 [0001] The invention belongs to the technical field of plywood adhesive preparation, and in particular relates to a plywood surface glue for improving water resistance. 【Background technique】 [0002] Plywood is a three-layer or multi-layer board-like raw material that is made of wood segments that are rotary-cut or veneer or sliced ​​into thin wood, and then glued with an adhesive. Usually, odd-numbered veneers are used, and adjacent veneers An industrial board formed by gluing the fiber directions perpendicular to each other. Usually the surface board and the inner layer board are symmetrically arranged on both sides of the center layer or the board core, and the slabs made of veneers after gluing are criss-crossed according to the direction of wood grain, and pressed under heating or without heating. made. Plywood can improve wood utilization and is a major way to save wood. [0003] The rapid growth of China's economy has become a strong traction for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/06C09J4/02C09J11/06C09J11/04
CPCC09J4/06C09J11/06C09J11/04
Inventor 潘甲贵
Owner 广西完美木业集团有限公司
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