Composite curing agent for MUF resin adhesive, and application of composite curing agent in production of medium-high density fiberboards
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A composite curing agent and resin adhesive technology, applied in the direction of adhesive additives, adhesives, non-polymer adhesive additives, etc., can solve the problem of few patents on MUF curing agents, achieve excellent latent properties, superior curing performance, Promotes fast curing effect
Active Publication Date: 2019-11-26
大亚木业(肇庆)有限公司 +1
View PDF4 Cites 1 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, judging from the published patents at home and abroad, there are very few patents on the MUF curing agent used in the production of fiberboard by the pipeline air drying method that is suitable for sizing first and then drying
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0023] A kind of preparation of composite curing agent for MUF resin adhesive:
[0024] 1. Weigh each component according to the following weight:
[0040] 2. Add the above components into the reaction kettle one by one, and stir evenly.
[0041] The main technical indicators of the obtained composite MUF resin curing agent are as follows:
[0042]
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
PUM
Login to view more
Abstract
The invention belongs to the field of wood adhesives, relates to a curing agent, especially relates to a composite curing agent for an MUF resin adhesive. The composite curing agent comprises 15-35 wt% of ammonium persulfate, 20-28 wt% of hexamethylenetetramine, 18-27 wt% of p-toluenesulfonic acid and 18-27 wt% of ethanolamine. The invention also relates to an application of the composite curing agent for the MUF resin adhesive in the production of medium-high density fiberboards. The composite curing agent disclosed by the invention has an excellent latency and a high hydrogen ion release starting temperature, can promote rapid curing of the resin at a high temperature, and also has the advantages of excellent curing performance and long working life. The curing agent is blended with theadhesive to effectively prevent the pre-curing problem of the adhesive in pipeline airflow drying, and can rapidly release hydrogen ions in the high-temperature hot pressing process to rapidly cure the adhesive, so the comprehensive performances of the boards is improved, and the production efficiency is greatly improved.
Description
technical field [0001] The invention belongs to the field of wood adhesives and relates to curing agents, in particular to a composite curing agent for MUF resin adhesives and its application in the production of medium and high density fiberboards. Background technique [0002] Urea-formaldehyde resin (UF) adhesives are widely used in the wood adhesive industry, but the shortcomings of high free formaldehyde content, easy aging and brittle cured products limit the further promotion of UF adhesives. Therefore, it is urgent to develop high-performance and low-toxicity adhesives. Low free UF. Melamine is alkaline, and after copolymerization and modification with UF, it forms melamine urea-formaldehyde resin (MUF), which can block the hydrophilic groups in urea-formaldehyde resin, increase the triazine benzene ring, and effectively improve the water resistance and heat resistance of the resin; Reacts with formaldehyde to form methylol melamine, reducing the free formaldehyde c...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more