Reactive polyurethane hot melt adhesive for edge sealing

A polyurethane hot-melt adhesive and reactive technology, applied in polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve problems such as poor high and low temperature resistance, insufficient bonding strength, and affecting product quality , to achieve the effects of low production cost, low melting temperature, improved work efficiency and automation

Active Publication Date: 2019-08-23
永隆高新科技(青岛)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the bonding strength is not enough, the high and low temperature resistance is not good, and the bonded edge strip is easy to fall off due to temperature changes in hot summer and cold winter, which affects product quality.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A reactive polyurethane hot-melt adhesive for edge sealing, consisting of the following raw materials in parts by mass: 12 parts of diisocyanate, 70 parts of polyester diol, 24 parts of tackifying resin, 5 parts of filler, 1 part of pigment, and 0.3 parts of stabilizer 1.5 parts, 1.5 parts of maleic acid, 0.3 parts of graphene.

[0022] The diisocyanate is 4,4'-diphenylmethane diisocyanate; the tackifying resin is thermoplastic polyurethane elastomer TPU; the filler is calcium carbonate; the pigment is titanium dioxide; agent, antioxidant, water stabilizer;

[0023] The polyester diol is obtained by reacting a dicarboxylic acid and a low molecular weight diol, wherein the dicarboxylic acid is phthalic acid; the low molecular weight diol is ethylene glycol;

[0024] The polyurethane hot melt adhesive is prepared by the following steps: mixing polyester polyol, tackifying resin, pigment, filler, stabilizer, maleic acid glycoside, and graphene in proportion, adding them t...

Embodiment 2

[0026] A reactive polyurethane hot-melt adhesive for edge sealing, consisting of the following raw materials in parts by mass: 15 parts of diisocyanate, 60 parts of polyester diol, 30 parts of tackifying resin, 2 parts of filler, 2 parts of pigment, and 0.1 parts of stabilizer 2 parts, 2 parts of maleic acid, 0.1 part of graphene.

[0027] The diisocyanate is toluene diisocyanate; the tackifying resin is thermoplastic resin ethylene-vinyl acetate copolymer EVA; the filler is magnesium silicate; the pigment is carbon black; Oxidizing agents, water stabilizers;

[0028] The polyester diol is obtained through the reaction of a dicarboxylic acid and a low molecular weight diol, wherein the dicarboxylic acid is isophthalic acid; the low molecular weight diol is diethylene glycol;

[0029] The polyurethane hot melt adhesive is prepared by the following steps: mixing polyester polyol, tackifying resin, pigment, filler, stabilizer, maleic acid glycoside, and graphene in proportion, a...

Embodiment 3

[0031] A reactive polyurethane hot melt adhesive for edge sealing, which is composed of the following raw materials in parts by mass: 5 parts of diisocyanate, 80 parts of polyester diol, 10 parts of tackifying resin, 8 parts of filler, 0.5 part of stabilizer, 1 part of acid glycoside, 0.5 part of graphene.

[0032] The diisocyanate is isophorone diisocyanate; the tackifying resin is a thermoplastic resin terpene resin; the filler is calcium silicate; the stabilizer includes a light stabilizer, an antioxidant, and a water stabilizer;

[0033] The polyester diol is obtained by reacting a dicarboxylic acid and a low molecular weight diol, wherein the dicarboxylic acid is phthalic acid; the low molecular weight diol is 1.4-butanediol;

[0034] The polyurethane hot melt adhesive is prepared by the following steps: mixing polyester polyol, tackifying resin, pigment, filler, stabilizer, maleic acid glycoside, and graphene in proportion, adding them to a polymerization reactor, and ra...

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PUM

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Abstract

The invention discloses a reactive polyurethane hot melt adhesive for the edge sealing, and belongs to the technical field of adhesives. The reactive polyurethane hot melt adhesive comprises the following raw materials in parts by mass: 5-15 parts of diisocyanate, 60-80 parts of polyester diol, 10-30 parts of tackifying resin, 2-8 parts of a filler, 0-2 parts of a pigment, 0.1-0.5 part of a stabilizer, 1-2 parts of maleic anhydride, and 0.1-0.5 part of graphene. The product has excellent initial adhesion strength and final strength, relatively low melting temperature and extremely short curingtime, and good heat resistance and storage stability, and is particularly suitable for the edge sealing processing of boards, the edge sealing effect is good, and the hot melt adhesive is safe, greenand pollution-free; and the product has no drying process and simple operation, is conducive to improving work efficiency and automation, and has low production cost and broad application prospects.

Description

technical field [0001] The invention relates to a hot melt adhesive for edge sealing, in particular to a reactive polyurethane hot melt adhesive for edge sealing and a preparation method thereof, belonging to the technical field of adhesives. Background technique [0002] Because wood-based panels are easy to process, save materials, and have high production efficiency, particleboard, plywood, and medium-density fiberboard can become the main materials for modern panel furniture production. However, considering that after the wood-based panel is cut into plate parts, the side surface is uneven and easy to absorb moisture and deform, so it is necessary to carry out edge treatment around it. The edge treatment methods of panel parts mainly include painting method, edge trimming method, edge wrapping method and edge banding method, among which edge banding method is the most widely used in panel furniture production. The edge banding method is to press and paste the edge bandi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J175/04C09J123/08C09J145/00C09J11/04C09J4/06
CPCC08K2003/2241C08K2003/265C08L2201/08C08L2205/035C09J4/06C09J11/04C09J175/06C08L75/04C08L23/0853C08L45/00C08K3/26C08K3/22C08K3/042C08K3/34
Inventor 朱金水
Owner 永隆高新科技(青岛)有限公司
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