Solvent-free two-component reactive type polyurethane adhesive applied to woodworking industry and using method of adhesive

A polyurethane adhesive and solvent-free technology, which is applied in the field of solvent-free two-component reactive polyurethane adhesives, can solve the problems of non-continuous production, many processing restrictions, and inconvenient use, so as to improve adhesion, increase production efficiency, and expand The effect of market prospects

Inactive Publication Date: 2018-09-14
广东中粘新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing technology is mainly single-component PUR adhesive, the disadvantage is that it has high viscosity and is solid at room temperature. It needs to be heated in the middle of the construction process and cannot be continuously produced.
Therefore, it is inconvenient to use, and there are many processing restrictions, and the viscose needs to be heated, and additional heating equipment is required

Method used

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  • Solvent-free two-component reactive type polyurethane adhesive applied to woodworking industry and using method of adhesive
  • Solvent-free two-component reactive type polyurethane adhesive applied to woodworking industry and using method of adhesive
  • Solvent-free two-component reactive type polyurethane adhesive applied to woodworking industry and using method of adhesive

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A kind of solvent-free two-component reactive polyurethane adhesive applied to the woodworking industry described in Example 1 of the present invention includes component A and component B:

[0030] ——The component A includes a prepolymer with a partially blocked or completely blocked isocyanate group in the side chain or main chain, an end-capping agent, an auxiliary agent, and a first catalyst; wherein the functionality of the prepolymer is equal to 1 , whose isocyanate content is 15%;

[0031] The prepolymer in the component A is polymerized by polyisocyanate and polyhydroxy compound b, and then reacted with blocking agent to generate, wherein the polyisocyanate is polyisocyanate is isophorone diisocyanate (IPDI) and diphenyl Methyl methane diisocyanate (MDI) according to the composition of IPDI:MDI=1.5, accounts for 55% of the total mass of component A; The polyhydroxy compound b is polyester polyol, selects Risheng Chemical Co., Ltd. P-2707 polymer The hydroxyl va...

Embodiment 2

[0044] The present invention described in Embodiment 2 of the present invention also relates to a method for using a two-component solvent-free reactive polyurethane adhesive for wood bonding, including the following steps:

[0045] (1) Before use, component A and component B are packaged with independent airtight containers respectively, and the airtight containers are tinplate barrels, PET / Al / Nylon / PP films, etc.;

[0046] (2) In the process of use, put the A component and the B group into the glue melting machine at room temperature and output them in proportion (100:100) through the metering pump to the static mixing tube for mixing or mechanical mixing so that the two components are evenly mixed to obtain Two-component solvent-free reactive polyurethane adhesive that meets the specified conditions;

[0047] (3) Preheating the glue-coated wood substrate until the surface of the substrate reaches 50°C;

[0048] (4) After heating the uniformly mixed polyurethane glue to 100...

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Abstract

The invention discloses a solvent-free two-component reactive type polyurethane adhesive applied to a woodworking industry. The polyurethane adhesive disclosed by the invention is a two-component reactive type polyurethane adhesive, and through self-researched formulas and production processes of a component A and a component B, the two-component reactive type polyurethane adhesive is prepared; and the adhesive has low viscosity, is a liquid at normal temperature, has low construction viscosity in the early stage, and is more easily penetrated into wood textures to improve adhesion; and the adhesive is quickly cured in the later stage to generate adhesion, and the adhesive can be used for continuous production and improve production efficiency.

Description

technical field [0001] The invention relates to a two-component solvent-free reactive polyurethane adhesive and a method for using the same, in particular to a solvent-free two-component reactive polyurethane adhesive used in the woodworking industry and a method for using the same. Background technique [0002] The existing technology is mainly a single-component PUR adhesive, which has the disadvantages of high viscosity, solid at room temperature, heating is required in the middle of the construction process, and continuous production is not possible. Therefore, it is inconvenient to use, and there are many processing restrictions, and the viscose needs to be heated, and additional heating equipment needs to be configured. Therefore, Ruhe has developed a kind of adhesive that does not require heating, has extremely low viscosity, and is convenient for bonding wood construction. It is a problem to be solved urgently by technical personnel in the industry. The convenience,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C08G18/80C08G18/76C08G18/75C08G18/67C08G18/66C08G18/42C08G18/32C08G18/10
CPCC09J175/04C08G18/10C08G18/42C08G18/6705C08G18/755C08G18/7671C08G18/3814C08G18/807
Inventor 黄世斌刘立华吴义强
Owner 广东中粘新材料科技有限公司
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