A kind of aldehyde-free flour-based adhesive and preparation method thereof
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 flour and glue-based technology, applied in adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve problems such as poor water resistance bonding performance, environmental pollution of human settlements, free formaldehyde release, etc., to achieve enhanced glue Good bonding performance, improved cross-linking density, and good uniformity
Active Publication Date: 2021-02-02
山东千森木业集团有限公司
View PDF4 Cites 0 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
[0003] With the improvement of people's living standards, the pollution of human settlements has attracted attention. The use of biomass adhesives to prepare wood-based panels can solve the problem of free formaldehyde release from wood-based panels. It is an important way to solve the problem, but most biomass adhesives There is the problem of poor water-resistant adhesive performance of the agent, which limits its industrial application
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
[0035] This embodiment provides a preparation method of flour adhesive, and the adhesive is prepared according to the following weight ratio:
[0041] This embodiment also provides the preparation method of the above-mentioned adhesive, and the specific preparation steps are as follows:
[0042] (1) Weigh the components according to the weight ratio, add the surface-modified attapulgite to the dispersion medium water, ultrasonicate for 15 minutes, and then add half the weight of modified flour, use a high-pressure homogenizer, under 30MPa pressure and 0.5MPa Under the action of emulsifying force, homogeneously emulsify for 20 minutes;
[0043] (2) Add the remaining modified flour to the mixture obtained in step (1), mix well, add self-made multifunctional epoxy compound and t...
Embodiment 2
[0045] This embodiment provides a preparation method of flour adhesive, and the adhesive is prepared according to the following weight ratio:
[0051] The preparation method of the adhesive described in this embodiment is the same as that in Example 1.
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
Property
Measurement
Unit
particle size (mesh)
aaaaa
aaaaa
strength
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses an aldehyde-free flour-based adhesive and a preparation method thereof. 0.1-0.3 parts by weight of the regulator, 8-12 parts by weight of the crosslinking agent, and 0.5-1 parts by weight of the catalyst; prepared by the following method: weighing each component according to the weight ratio, adding the reinforcing agent to the dispersion medium water, and ultrasonicating for 15 minutes , and then add half the weight of the main agent, use a high-pressure homogenizer, under the action of 30MPa pressure and 0.5MPa emulsifying force, homogeneously emulsify for 20 minutes; add the remaining main agent to the mixture obtained above, mix well and then add cross-linking The adhesive and the remaining catalyst were reacted at 80°C for 30 minutes, and the material was discharged at a temperature of 30°C; the adhesive of the present invention is easy to form a cross-linked structure, has a high cross-linking density, a low reaction temperature, a simple preparation method, and the prepared adhesive has stable performance and weak interface. Significant drop in ply, lower cost, good dry / wet strength, and stable improvement in product quality.
Description
technical field [0001] The invention relates to the field of plywood preparation, in particular to an aldehyde-free flour-based adhesive and a preparation method thereof. Background technique [0002] my country's precious wood resources are relatively scarce, and artificial forest resources are abundant. Using artificial forest fast-growing wood to prepare wood-based panels through adhesives is the main raw material for furniture floors and interior decoration in the living environment. In 2017, the total output of my country's wood-based panels was 295 million cubic meters Rice, accounting for about 50% of the world's total output, of which more than 60% are plywood products. Based on the average production of 9 cubic meters of wood-based panels per ton of adhesive, the consumption of adhesives for plywood in my country in 2017 was about 18 million tons (solid content 50%), of which urea-formaldehyde resin and its modified products accounted for the total output of adhesive...
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