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Additive agent for preparation of artificial board cementing compound and preparation method thereof

An additive and adhesive technology, applied in the direction of polymer adhesive additives, adhesive additives, etc., can solve the problems of no glue coating, low starch content, high protein and sugar content, etc., to eliminate uneven distribution and improve gluing. Performance, effect of uniform particle size distribution

Inactive Publication Date: 2013-01-23
张东成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the production of wood-based panels such as plywood, in order to reduce the cost of resin adhesives and improve the glue coating performance, starch or flour materials are often added to the preparation of adhesives, but using starch or flour as additives for adhesives not only wastes food, but also When the adhesive is mixed with starch or flour, lumps often appear. During the sizing process, the glue solution cannot be evenly applied to the surface of the wood-based panel substrates such as veneers to be glued, resulting in uneven distribution of the bonding strength, and in severe cases, a glued layer appears. Unglue
Wheat bran is the leftovers produced in the production of flour. It contains less starch, rich cellulose, higher protein and sugar, and has good solubility with resin binders commonly used in wood-based panels, but Wheat bran is flaky, and it must be pulverized to make the particle size distribution of the powder meet certain requirements, so that it can be well used as an additive for wood-based panel adhesives. If the pulverized particle size distribution does not meet the requirements, it will affect the bran particles in the glue. The uniformity of distribution in the liquid cannot make high-quality adhesives

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: Wheat bran raw material is put into pulverizer to pulverize, take raw material gross weight as basis, starch content is less than 40% in the raw material, ash content is lower than 8% and fiber content is 8-15%, pulverized material is in Before sieving, the iron-containing impurities in the powder are removed by magnetic separation, and the crushed material after magnetic separation is sent to the screening area, passing through the 40, 60 and 80 mesh multi-layer or single-layer vibrating screen, or passing through the 40, 60 and 40 mesh. The 80-mesh multi-layer or single-layer fixed sieve is used for sieving. After screening, the qualified powder is transported to the packaging area for weighing and packaging. The bran larger than 40 mesh will be sent back to the pulverizer for further crushing. Based on the total weight of the additive, the final particle size distribution and components of the additive are: 30% of the powder between 40-60 mesh (including...

Embodiment 2

[0020] Embodiment 2: Put at least one of wheat bran and wheat as a raw material into a pulverizer for pulverization, based on the total weight of the raw material, the starch content in the raw material is less than 40%, the ash content is lower than 8% and the fiber content is 8-15%, the crushed material is magnetically separated before screening to remove iron-containing impurities in the powder, and the crushed material after magnetic separation is sent to the screening area, and the 40, 60 and 80 mesh multi-layer or single-layer vibration is passed through the screen Sieve, or sieve through 40, 60 and 80 mesh multi-layer or single-layer fixed sieves. After screening, the powder that meets the requirements is transported to the packaging area for weighing and packaging, and the bran larger than 40 mesh will be sent back to the pulverizer for further crushing. . Based on the total weight of the additives, the final particle size distribution and components of the additives a...

Embodiment 3

[0021] Embodiment 3: At least one of wheat bran and wheat is put into a pulverizer as a raw material for crushing. Based on the total weight of the raw material, the starch content in the raw material is less than 40%, the ash content is lower than 8%, and the fiber content is 8-15%, the crushed material is magnetically separated before screening to remove iron-containing impurities in the powder, and the crushed material after magnetic separation is sent to the screening area, and the 40, 60 and 80 mesh multi-layer or single-layer vibration is passed through the screen Sieve, or sieve through 40, 60 and 80 mesh multi-layer or single-layer fixed sieves. After screening, the powder that meets the requirements is transported to the packaging area for weighing and packaging, and the bran larger than 40 mesh will be sent back to the pulverizer for further crushing. . Based on the total weight of the additive, the final particle size distribution and components of the additive are:...

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Abstract

The invention discloses an additive used for preparing artificial plate adhesive, and a method used for preparing the additive; at least one out of wheat bran and wheat is taken as raw material, total weight of the raw material is used as benchmark, the content of starch in the raw material is less than 40%, the ash content thereof is less than 8% and the fiber content is 8-15%; the raw material is crushed, magnetically selected, screened and mixed so as to prepare additive; the total weight of the additive is used as benchmark, and the granularity distribution and compositions of the additive are as follows: 10-40% of particles with the granularity of 40-60 meshes (including 40 meshs), 0-40% of particles with the granularity of 60-80 meshes (including 60 meshs), and 50-70% of the particles with the granularity of more than 80 meshes (including 80 meshs); the granularity of the additive is distributed uniformly, adhesive of high quality can be formed, defects that the starch or flour is not mixed distributed in the adhesive, massive starch or flour is always arranged in the adhesive, thus increasing the viscosity of the adhesive and leading the coating not to be carried out smoothly are eliminated, the coating performance on the surface of the wood such as single plate, and the like, is better than that of the adhesive mixed by starch or flour, the adhesion performance of the artificial plate such as veneer can be improved, the grain is saved, and the cost of the adhesive is reduced.

Description

technical field [0001] The invention relates to an additive for the preparation of wood-based panel adhesives, in particular to an additive and a preparation method thereof. Background technique [0002] In the production of wood-based panels such as plywood, in order to reduce the cost of resin adhesives and improve the glue coating performance, starch or flour materials are often added to the preparation of adhesives, but using starch or flour as additives for adhesives not only wastes food, but also When the adhesive is mixed with starch or flour, lumps often appear. During the sizing process, the glue solution cannot be evenly applied to the surface of the wood-based panel substrates such as veneers to be glued, resulting in uneven distribution of the bonding strength, and in severe cases, a glued layer appears. Open glue. Wheat bran is the leftovers produced in the production of flour. It contains less starch, rich cellulose, higher protein and sugar, and has good solu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J11/08
Inventor 张东成
Owner 张东成