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A kind of preparation method of solvent-free polyurethane adhesive for fabric composite

A solvent-free polyurethane and adhesive technology, used in polyurea/polyurethane adhesives, adhesive types, adhesives, etc., can solve the problems of difficult to adapt to the construction process, difficult to control the thickness of the glue coating, and application process limitations. , to achieve the effect of good cloth composite effect, catalyst optimization and process condition optimization.

Active Publication Date: 2018-06-05
JIANGSU HUADA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, limited by the application process of this type of adhesive (requiring a series of process conditions such as gluing and rolling to be completed at room temperature), water-based polyurethane adhesives encounter the inherent problem that they cannot be cured at room temperature during construction.
The solvent-free polyurethane adhesive has a lower viscosity at room temperature, which is beneficial to the coating of the adhesive layer; but it is also difficult to adapt to the current construction process, because it is also difficult to form a better adhesion effect at room temperature , and the thickness of the glue is difficult to control

Method used

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  • A kind of preparation method of solvent-free polyurethane adhesive for fabric composite
  • A kind of preparation method of solvent-free polyurethane adhesive for fabric composite
  • A kind of preparation method of solvent-free polyurethane adhesive for fabric composite

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preparation example Construction

[0019] The preparation method of the solvent-free polyurethane adhesive used for fabric compounding of the present invention comprises the following steps: (a) stirring the first material evenly; Composition and catalyst composition, the first composition includes the first polyether polyol, and the catalyst is composed of the following components in mass fraction: 40-60% of the first amine catalyst, 20-40% of the second amine catalyst %, organic bismuth catalyst 10-20% (the first amine catalyst is selected from commercially available DABCO series products such as DABCO EG, the second amine catalyst is selected from commercially available DABCO series products such as RP201, DABCO 33-LX, etc., organic The bismuth catalyst is selected from commercially available DABCO series products (MB20); (b) the second material is stirred evenly; the raw material formula of the second material comprises isocyanate and the second polyether polyol; (c) the second material is mixed with The fi...

Embodiment 1

[0024] The present embodiment provides a kind of preparation method for the solvent-free polyurethane adhesive of fabric composite, and it comprises the following steps:

[0025] (a) Add the first material into the first container, heat to 40°C, stir to make it circulate, so as to prevent the temperature of the material from being uneven;

[0026] (b) Add the second material into the second container, heat to 40°C, stir to make it circulate, so as to prevent the temperature of the material from being uneven;

[0027] (c) The first material and the second material are mixed in the mixing head by the metering pump and sprayed out in the form of droplets (particle size: 120 μm) at 0.8 MPa; the mass ratio of the first material to the second material is 100:50 , and the first material is made up of the first composition and the catalyst that the mass ratio is 150:1; GY-3010E (functionality is 3, number average molecular weight is 3000, produced in Guodu), 1wt% 1,4-butanediol (chai...

Embodiment 2

[0029] The present embodiment provides a kind of preparation method for the solvent-free polyurethane adhesive of fabric composite, and it comprises the following steps:

[0030] (a) Add the first material into the first container, heat to 60°C, stir to make it circulate, so as to prevent the temperature of the material from being uneven;

[0031] (b) Add the second material into the second container, heat to 60°C, stir to make it circulate, so as to prevent the temperature of the material from being uneven;

[0032] (c) Make the first material and the second material spray out in the form of droplets (with a particle size of 320 μm) at 1.5 MPa after being mixed in the mixing head by a metering pump;

[0033] The mass ratio of the first material and the second material is 100:54, and the first material is made up of the first composition and the catalyst that the mass ratio is 200:1; The first composition comprises the polyether polyol of 96wt% (Guodu Chemical Industry The poly...

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Abstract

The invention relates to a preparing method for a solvent-free polyurethane adhesive for fabric-fabric combination. The preparing method comprises the following steps that firstly, a first material is stirred evenly, wherein the first material is prepared from a first composite and a catalyst at the mass ratio of (150-200):1, the first composite includes first polyether polyol, and the catalyst is prepared from, by mass, 40-60% of a first amine catalyst, 20-40% of a second amine catalyst and 10-20% of an organic bismuth catalyst; secondly, a second material is stirred evenly, wherein the second material is prepared from isocyanate and second polyether polyol; thirdly, the first material and the second material are mixed at the mass ratio of (100-50):54, and then the mixture is extruded at the room temperature. No solvent needs to be added, so that no solvent residue exists in the finished product, and the problems of pollution to the production environment and waste of solvents are avoided.

Description

technical field [0001] The invention relates to a polyurethane adhesive for fabric lamination, in particular to a preparation method of a solvent-free polyurethane adhesive for fabric lamination. Background technique [0002] Polyurethane adhesives refer to adhesives that contain urethane groups or isocyanate groups in the molecular chain. Polyurethane adhesives are divided into two categories: polyisocyanate and polyurethane. Polyurethane adhesive is an important part of the rapidly developing polyurethane resin. It has excellent shear strength, impact resistance and flexibility, as well as excellent rubber properties. It can adapt to the adhesion of different thermal expansion coefficient substrates. It forms a soft-hard transition layer between the substrates, which not only has strong adhesion, but also has excellent cushioning and shock absorption functions, so it is suitable for cloth composites. [0003] Polyurethane adhesives are divided into oil-based, water-based...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/40C08G18/32C08G18/63C08J9/08C09J175/08
CPCC08G18/3206C08G18/4072C08G18/4804C08G18/4854C08G18/632C08G18/6511C08G18/6674C08G2170/60C09J175/08C08G2110/0083
Inventor 吕少波陈伟初钦滨訾少宝高瑞芳刘少勇
Owner JIANGSU HUADA NEW MATERIAL CO LTD