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A water-based zero-formaldehyde plywood adhesive

An adhesive and plywood technology, applied in the direction of adhesive, monocarboxylate copolymer adhesive, adhesive type, etc., can solve the problems of poor comprehensive performance and difficult operation, improve aging resistance, prevent adhesive layer The effect of shrinkage, excellent water and solvent resistance

Active Publication Date: 2017-03-22
HEFEI KETIAN WATERBORNE TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide a water-based zero-formaldehyde plywood adhesive, which is used to overcome the problems of difficult operation and poor comprehensive performance of the adhesive used in plywood in the prior art. defect

Method used

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  • A water-based zero-formaldehyde plywood adhesive
  • A water-based zero-formaldehyde plywood adhesive
  • A water-based zero-formaldehyde plywood adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The vinyl acetate-ethylene copolymer emulsion in embodiment 1 is Celanese 1496; The polyether type water-based polyurethane-acrylic ester resin is Ketian chemical industry KTC701; The pH regulator is Guangzhou Yintian chemical YINTIAN-99, which is an organic alcohol amine; The pressure-sensitive adhesive is selected from FR-601 of Wuxi Changsheng, and its solid content is 50%, which is a silicone pressure-sensitive adhesive; the filler is heavy calcium carbonate; the curing agent is MDI-50; The agent is polyacrylamide, and its number-average molecular weight is 3 million; the thickener is Hemings 150, which is an aqueous alkali-swellable thickener; the defoamer is Airex902W.

Embodiment 2

[0051]The vinyl acetate-ethylene copolymer emulsion in Example 2 is Clariant Chemical Industry DI-4900; the polyether type water-based polyurethane-acrylate resin is Ketian Chemical KTC701; Ethanolamine; The pressure-sensitive adhesive is Zhongshan Dow self-adhesive, and its solid content is 55%, which is water-based polypropionate; The filler is 2500 mesh talcum powder; The curing agent is HMDI; The agent is Guangxi Tongxuan Rosin Emulsion 7050; the thickener is Deqian 1010, which is a water-based polyurethane associative thickener; the defoamer is BYK-044.

Embodiment 3

[0052] The vinyl acetate-ethylene copolymer emulsion in Example 3 is Celanese 8481; the polyether-type water-based polyurethane-acrylate resin is Ketian Chemical KTC701; the pH regulator is Hairun potassium methyl silicate BS168; the pressure-sensitive adhesive It is Danyang Zhongcai pressure-sensitive adhesive, its solid content is 54%, and it is water-based polyacrylate; the filler is ethyl cellulose; the curing agent is HDI; the tackifier is Guangxi Tongxuan TSR- 0065*50 water-based rosin thickening emulsion; the thickener is Hairun TS2751 water-based alkali-swellable acrylic thickener; the defoamer is DefomW-0506.

[0053] The adhesives in Examples 1 to 7 were prepared by a method comprising the following steps: First, adjust the pH of the vinyl acetate-ethylene copolymer emulsion to 7.0 with a pH regulator, add fillers to disperse and beat until there are no obvious small particles, and then mix with The polyether-based water-based polyurethane-acrylate resin is mixed slo...

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Abstract

The invention provides a water-based zero-formaldehyde adhesive for plywoods. The water-based zero-formaldehyde adhesive comprises the following materials in parts by weight: 30-60 parts of vinyl acetate-acetate copolymer emulsion, 20-50 parts of polyether-type water-based polyurethane-acrylate resin, 0.1-0.5 part of pH regulating agent, 2-10 parts of pressure-sensitive adhesive, 10-30 parts of filler, 1-10 parts of curing agent, 0.5-2 parts of viscosifying additive, 0.5-2 parts of thickening agent and 0.1-1 part of defoaming agent. The water-based zero-formaldehyde adhesive provided by the invention has the advantages that the generation of formaldehyde and an organic solvent is avoided from the source, the viscocity of the adhesive can be randomly adjusted according to the plate-manufacturing process, the storage stability is good, the bonding strength is high, the water resistance is good, the plate opening time is long, the production efficiency is high, and the cost is low, so that the water-based zero-formaldehyde adhesive is suitable for industrial production.

Description

technical field [0001] The invention relates to the field of adhesives, and specifically discloses a water-based plywood adhesive. Background technique [0002] With the rapid development of the world economy, the timber industry has played an increasingly important role in the economic development of many countries. With the rapid development of the building decoration and furniture industries in China, the demand for domestic timber has increased sharply, and the gap in timber supply has become more and more prominent. Plywood is one of the commonly used materials for furniture. It is a kind of wood-based panel. Plywood can improve the utilization rate of wood and is a main way to save wood. [0003] In the prior art, various adhesives are used in plywood to increase the utilization rate of wood and improve the performance of plywood. For example, the invention patent with domestic application number 2013107493683 discloses a formaldehyde-free water-resistant adhesive fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J131/04C09J175/14C09J11/04C09J11/06C09J11/08
Inventor 许金凤赵曦朱道金林磊金红攀赵春娥李维虎朱良元
Owner HEFEI KETIAN WATERBORNE TECH CO LTD
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