Isocyanate adhesive composition and routing fiberboard prepared from isocyanate adhesive composition

An isocyanate and adhesive technology, used in adhesives, manufacturing tools, adhesive additives, etc., can solve the problems of difficulty in forming an adhesive layer, reducing production efficiency and economic benefits, poor dimensional stability, etc., to meet the production process and appearance. Requirements, the effect of smooth milling section without burrs, excellent dimensional stability

Active Publication Date: 2019-09-24
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the above-mentioned process method of aldehyde engraved fiberboard is applied to the formaldehyde-free engraved fiberboard processed by isocyanate adhesive, there are still problems such as board engraving hair and poor dimensional stability.
This is because when processing formaldehyde-free boards with isocyanate adhesives, the amount of glue applied is small, and the isocyanate will excessively penetrate into the fiber matrix, and the bonding method is point bonding, making it difficult to form an obvious bonding layer
At present, the formaldehyde-free milling fiberboard with isocyanate as adhesive on the market still needs to be milled multiple times to improve the hairiness and dimensional stability of the milling, which greatly reduces the production efficiency and economic benefits

Method used

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  • Isocyanate adhesive composition and routing fiberboard prepared from isocyanate adhesive composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] 1. Preparation of adhesive B1 component

[0071] (1) Inner crown grafting: disperse 100 kg of silica particles with 500 kg of water to obtain a suspension. This was added to 25 L of 3-(trimethoxysilylpropyl)dimethyloctadecylammonium chloride solution. The suspension was stirred and reacted at room temperature for 24 hours, and then the supernatant was discarded to obtain a crown-coated silica.

[0072] (2) Self-assembly of the outer crown: prepare a 10.5 wt% aqueous solution of tetradecyl polyoxyethylene ether potassium sulfate and adjust the pH to 10.5. Put the stirred and dispersed inner crown-coated silica in the reaction kettle, adjust to the same pH value, add 37.8 kg tetradecyl alcohol polyoxyethylene ether potassium sulfate aqueous solution, and react at 70 ° C for 24 hours to make the reaction fully proceed, then The solvent was removed, and the obtained product was washed with methanol and water respectively, and then dried at 100° C. for 48 hours, and the re...

Embodiment 2

[0090] The main preparation process of this embodiment is the same as Example 1, and has the following differences with Example 1:

[0091] 1. Preparation of adhesive B1 component

[0092] (1) Inner crown grafting: disperse 100 kg of silica particles with 500 kg of water to obtain a suspension. This was added to 25 L of 3-(trimethoxysilylpropyl)dimethyloctadecylammonium chloride solution. The suspension was stirred and reacted at room temperature for 20 hours, and then the supernatant was discarded to obtain a crown-coated silica.

[0093] (2) Self-assembly of the outer crown: prepare 10.5 wt% cetyl alcohol polyoxyethylene ether potassium sulfate aqueous solution and adjust the pH to 10. Put the stirred and dispersed inner crown-coated silica in the reaction kettle, adjust to the same pH value, add 33.6kg cetyl alcohol polyoxyethylene ether potassium sulfate aqueous solution, and react at 60°C for 20h to fully proceed the reaction, then The solvent was removed, and the obta...

Embodiment 3

[0102] The main preparation process of this embodiment is the same as Example 1, and has the following differences with Example 1:

[0103] 1. Preparation of adhesive B1 component

[0104] (1) Inner crown grafting: disperse 100 kg of silica particles with 500 kg of water to obtain a suspension. This was added to 28 L of 3-(trimethoxysilylpropyl)dimethylhexadecylammonium chloride solution. The suspension was stirred and reacted at room temperature for 20 hours, and then the supernatant was discarded to obtain a crown-coated silica.

[0105] (2) Self-assembly of the outer crown: prepare a 10.5 wt% aqueous solution of tetradecyl polyoxyethylene ether potassium sulfate and adjust the pH to 11. Put the stirred and dispersed inner crown-coated silica in the reaction kettle, adjust to the same pH value, add 37.8kg tetradecyl alcohol polyoxyethylene ether potassium sulfate aqueous solution, and react at 65°C for 20h to make the reaction fully proceed, then The solvent was removed, ...

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Abstract

The invention relates to an isocyanate adhesive composition for a fiberboard and a routing fiberboard prepared from the isocyanate adhesive composition. The isocyanate adhesive composition comprises an isocyanate adhesive, a double-crown-layer silicon dioxide composite material and a lignin wood material. The routing fiberboard is formed by mixing separated fibers and the adhesive and performing hot press molding. The fiberboard prepared by using the adhesive provided by the invention has good routing performance, and the dimensional stability is better maintained.

Description

technical field [0001] The invention belongs to the field of wood-based panel manufacture, and in particular relates to an isocyanate adhesive composite material and a milled fiberboard produced therefrom. Background technique [0002] Fiberboard is one of the three major fields of wood-based panels, and it has a wide range of use values ​​in furniture, vehicles, audio and other fields. Due to its uniform density, compact fibers and high internal bonding strength, the milled fiberboard can be carved and hollowed out. The milled board can obtain various patterns and patterns required by customers, so it is widely used in door frames, furniture, cabinets and other fields. There is a wider range of applications. [0003] However, the engraving and milling performance of ordinary fiberboards currently available on the market cannot meet the requirements of furniture manufacturers. The reason is that the ordinary fiberboard has shortcomings such as rough fibers, uneven cross-se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J11/04C08G18/64B27N1/00B27N1/02B27N3/00B27N3/12B27N3/20
CPCB27N1/00B27N1/02B27N3/002B27N3/12B27N3/203C08G18/6492C08K3/36C08K9/06C08K9/08C09J11/04C09J175/04
Inventor 王向硕涂松胡兵波
Owner WANHUA CHEM GRP CO LTD
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