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Preparation method of adhesive-free medium and high density plant fiber board

A plant fiber, high-density technology, applied in the field of composite materials, can solve the problems of the release of formaldehyde and other toxic substances, high-density plant fiber composite materials can not be completely degraded, etc., to achieve good mechanical processing performance, strong interlayer bonding, water use The effect of low battery

Inactive Publication Date: 2018-04-20
张静
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention: Aiming at the problem that high-density plant fiber composite materials in the current market cannot be completely degraded and toxic substances such as formaldehyde are released during use, a method for preparing medium-high-density plant fiber board without glue is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0027] Air-dry the soybean meal naturally and put it into a pulverizer to crush it, pass through a 40-mesh sieve, put the sieved soybean meal powder on the evaporator, and heat-treat it in a water vapor atmosphere for 1 hour, control the temperature at 160°C, and cool it to room temperature to obtain pretreatment For soybean meal, air-dry the cassava dregs naturally, put them into a pulverizer and grind them, pass through a 40-mesh sieve, put the sieved cassava dregs powder on the evaporator, heat-treat for 1 hour in a steam atmosphere, control the temperature at 180°C, and cool to room temperature After obtaining pretreated cassava dregs powder, take 200g pretreated soybean meal and 200g pretreated cassava dregs powder, add them to 10L deionized water, stir at 300r / min at 35°C for 20min, and then transfer them to a refiner for grinding until the degree of knocking is 15°SR, and use 1% hydrochloric acid to adjust the pH to 4.0, then add 0.4g potassium persulfate, heat to 65°C, ...

example 2

[0029] Air-dry the soybean meal naturally, put it into a pulverizer and grind it, pass through a 40-mesh sieve, put the sieved soybean meal powder on the evaporating pot, heat-treat it in a steam atmosphere for 1 hour, control the temperature at 170°C, and cool it to room temperature to obtain pretreatment Soybean meal, air-dry the cassava dregs naturally, add them to the pulverizer and grind them, pass through a 40-mesh sieve, put the sieved cassava dregs powder on the evaporator, heat-treat for 1 hour in a steam atmosphere, control the temperature at 190°C, and cool to room temperature After obtaining pretreated cassava dregs powder, get 250g pretreated soybean meal and 250g pretreated cassava dregs powder, add 12L deionized water, stir at 350r / min at 38°C for 25min, and then transfer to a refiner for grinding until the degree of knocking is 18°SR, and use 1% hydrochloric acid to adjust the pH to 4.2, then add 0.5g potassium persulfate, heat to 68°C, and continue to stir for ...

example 3

[0031] Air-dry the soybean meal naturally and put it into a pulverizer to crush it, pass through a 40-mesh sieve, put the sieved soybean meal powder on the evaporator, heat-treat it in a steam atmosphere for 2 hours, control the temperature at 180°C, and cool it to room temperature to obtain pretreatment Soybean meal, air-dry the cassava dregs naturally, put them into a pulverizer and grind them, pass through a 40-mesh sieve, put the sieved cassava dregs powder on the evaporator, heat-treat it in a steam atmosphere for 2 hours, control the temperature at 200°C, and cool it down to room temperature After obtaining pretreated cassava dregs powder, take 300g pretreated soybean meal and 300g pretreated cassava dregs powder, add them into 15L deionized water, stir at 400r / min for 30min at 40°C, and then transfer them to a refiner for grinding until the degree of knocking is 20°SR, and use 1% hydrochloric acid to adjust the pH to 4.5, then add 0.6g potassium persulfate, heat to 70°C,...

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Abstract

The invention relates to a preparation method of an adhesive-free medium and high density plant fiber board, and belongs to the technical field of composite materials. According to the preparation method, soybean meal and cassava residues are used as raw materials, and an adhesive is not added; soybean isolate protein and starch, which are rich in the soybean meal and the cassava residues, are utilized, and sugar and colloidal substances are released under the action of high temperature and are crossly linked to obtain an adhesive for connecting plant fibers; then the plant fibers are hotly pressed to prepare a medium and high density board which nearly comprises all plant fibers, and hydrogen bonding between the fibers is improved; furthermore, the quality of a medium and high density plant fiber functional material is improved; the adhesive-free medium and high density plant fiber board can be completely degraded, and toxic substances including formaldehyde and the like are not released in a utilization process; the adhesive-free medium and high density plant fiber board has the advantages of simple raw material components, wide source, low price, no toxin and no harms; the plantfiber board has a good machining property and has very good stiffness, flexibility, toughness, tensile force and waterproof performance; the rigidity, bonding strength and toughness reach the advanced international level of like products.

Description

technical field [0001] The invention relates to a method for preparing a glue-free medium-high-density plant fiber board, which belongs to the technical field of composite materials. Background technique [0002] Under the background of advocating ecological and environmental protection, environmentally friendly composite materials have attracted more and more attention. Plant fiber composite materials have many excellent characteristics such as environmental protection, degradability, sound absorption, heat insulation, etc., and are the materials with the fastest growing demand among all composite materials in recent years. Plant fibers have obvious advantages in industries such as construction, automobiles, furniture manufacturing, and interior decoration. [0003] Natural plant fiber resources are very rich in nature. Plants can produce a large amount of organic renewable fibers through photosynthesis, and the global production of 10 12 Tons of naturally synthesized cel...

Claims

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Application Information

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IPC IPC(8): C08L1/02C08L89/00C08L3/02C08J3/24
Inventor 张静王文新蔡静
Owner 张静
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