A density board produced by using soybean protein glue and its preparation method

A technology of soybean protein glue and density board, which is applied in applications, household components, flat products, etc., can solve problems such as harming health, limiting the scope of use, and poor waterproofness

Active Publication Date: 2017-02-22
SHANDONG BAIER BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is soft and impact resistant, has high strength, uniform density after pressing, and is easy to reprocess. It has been widely used in many fields in our country, but its disadvantage is poor water resistance, which also limits its scope of use to a certain extent.
[0003] Urea-formaldehyde resin glue is commonly used in the production of density boards. Using these glues to produce plywood has high efficiency and excellent product performance, but the formaldehyde emission of the product is also high, which destroys people's living environment and seriously harms people's health.

Method used

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  • A density board produced by using soybean protein glue and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A density board produced by using soybean protein glue and a preparation method; material preparation→air delivery→fiber separation→glue sizing and drying→pavement molding→prepressing→hot pressing→cooling board→edge trimming→sanding→separate inspection and storage. The bonding colloid is soybean protein glue, and the preparation of soybean protein glue includes: 30 parts of soybean protein raw materials, 100 parts of water, 25 parts of modifier, 10 parts of filler, 2 parts of thickener, anionic surfactant 3 parts, preservative 2 parts; soybean protein glue does not contain formaldehyde, green and environmentally friendly, non-toxic and harmless, and the volatility of protein adhesives is particularly low, no degumming, bonding strength and water resistance can meet the technical indicators of urea-formaldehyde resin . The density board made is non-toxic, harmless, green and environmentally friendly, and its formaldehyde emission is zero.

Embodiment 2

[0028] A method for preparing a density board produced by soybean protein glue, comprising the following steps;

[0029] Step 1), material preparation section:

[0030] The raw materials are all transported by cutting and loading machine: wood chips and broad-leaved materials are put into the silo in proportion, discharged quantitatively, transported by belt, magnetically separated, and then enter the storage hopper of the thermal mill.

[0031] Step 2), fiber preparation and drying:

[0032] The fiber preparation adopts a vertical preheating cylinder, and the manufactured fiber is directly sprayed into the airflow drying system by the heat refiner, so that the wet fiber is dried to the required moisture content, and the drying heat source is steam. The dried fibers are sent to the fiber warehouse by air after continuous weighing and moisture content determination. In order to ensure the drying quality, the drying system is equipped with a temperature control feedback system...

Embodiment 3

[0057] Embodiment 3: wherein the step 3 of embodiment 2) is: sizing:

[0058] Pipeline sizing is used; the preparation of soybean protein glue includes 50 parts of soybean protein raw materials, 100 parts of water, 35 parts of modifiers, 10 parts of fillers, 3 parts of thickeners, 5 parts of anionic surfactants, and anti-corrosion 2 doses;

[0059] The automatic glue blending machine mixes the various components of the rubber material in proportion, and sprays them directly into the discharge pipe of the heat refiner through the automatic metering device. The amount of glue applied is 8%-12% of the weight of the finished product. Use a metering pump to inject into the thermal grinder, and the dosage is 1-2% of the weight of the finished product. The sizing system adopts automatic monitoring to ensure the quantitative and uniform sizing.

[0060] The automatic glue adjuster sprays soybean protein glue directly into the discharge pipe of the heat refiner, and the glue amount i...

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PUM

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Abstract

The invention provides a medium density fiberboard produced by soybean protein adhesive and a preparation method and belongs to the technical field of building medium density fiberboards. A pipeline is adopted for applying the adhesive. The soybean protein adhesive is prepared from, by weight, 30 to 50 parts of soybean protein raw materials, 100 parts of water, 25 to 35 parts of modifiers, 10 parts of padding, 2 to 3 parts of thickening agent, 3 to 5 parts of anionic surfactant and 2 parts of corrosion remover. All the components of the adhesive are matched and mixed through an automatic adhesive mixing machine according to the proportion, the adhesive is directly sprayed into a discharging pipe of a thermal grinding machine through an automatic metering device, and the adhesive applying amount accounts for 8% to 12% of the weight of a finished product; the adhesive is injected into the thermal grinding machine through a metering pump and the use amount accounts for 1% to 2% of the weight of the finished product. An adhesive applying system is fully automatically monitored so as to guarantee that the adhesive can be applied quantitatively and evenly, the front face and the back face of each rough board are sanded through a sander at a time; the boards are checked, graded, stacked, packaged and stored in a warehouse. The medium density fiberboard produced by the soybean protein adhesive has the remarkable advantages of being environmental friendly and free of benzene and formaldehyde.

Description

technical field [0001] The invention relates to a density board produced by using soybean protein glue and a preparation method, belonging to the technical field of building density boards. Background technique [0002] Density board (English: Medium Density Fiberboard (MDF)), also known as fiberboard, is a man-made board made of wood materials such as trunk wood and branch wood or other plant fibers by heat grinding, sizing, drying, and paving. , The adhesive mainly uses urea-formaldehyde glue. It is soft and impact resistant, has high strength, uniform density after pressing, and is easy to reprocess. It has been widely used in many fields in our country, but its disadvantage is poor water resistance, which also limits its scope of use to a certain extent. . [0003] Urea-formaldehyde resin glue is commonly used in the production of density boards. Using these glues to produce plywood has high efficiency and excellent product performance, but the formaldehyde emission of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N3/04B27N1/02
CPCB27N1/02B27N3/002B27N3/04
Inventor 孙小力
Owner SHANDONG BAIER BUILDING MATERIAL CO LTD
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