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Manufacturing method of particle board based on soybean meal adhesive

A particleboard and soybean meal technology, applied in the field of particleboard, can solve the problems of high viscosity, non-uniform performance and short storage period of soybean meal adhesive, and achieve the effects of short storage period, simple preparation process and high viscosity.

Inactive Publication Date: 2018-10-09
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problems to be solved: In order to solve the potential formaldehyde release problem of the particleboard produced by the existing technology, the soybean meal adhesive has high viscosity, difficult to spray, short storage period, uneven performance and other problems

Method used

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  • Manufacturing method of particle board based on soybean meal adhesive
  • Manufacturing method of particle board based on soybean meal adhesive
  • Manufacturing method of particle board based on soybean meal adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add the modified glue, soybean meal powder, waterproofing agent, and curing agent into a beaker according to the ratio of 20:5:15:1 (mass ratio), stir evenly, and set aside. Weigh 0.60kg of fine shavings and pour them into the mixing equipment and stir continuously. At the same time, add half of the compounded soybean meal adhesive into the mixing equipment equipped with fine shavings. After stirring, discharge, weigh and divide into two parts on average . Weigh 0.90kg of coarse shavings and add them to the mixing equipment, and add the remaining soybean meal adhesive to the mixing equipment in the same way to stir, stir evenly, and discharge the material for use. Then, take one of the fine shavings and spread evenly into a mold frame of a certain specification as the lower surface of the particleboard, then spread the coarse shavings as the core layer of the particleboard, and then spread the remaining part of the fine shavings as the particleboard of the upper surfac...

Embodiment 2～ Embodiment 8

[0035] Examples 2 to 8 are carried out according to the method and steps in Example 1, and the composition ratio, hot-pressing temperature and hot-pressing time of the adhesive are shown in Attached Table 1.

[0036] See Attached Table 2 for the test results of Examples 1 to 8.

[0037] Schedule 1

[0038]

[0039] Schedule 2

[0040]

[0041] Example Results Discussion

[0042] It can be seen from Table 1 and Table 2 that the composition ratio, hot-pressing temperature and hot-pressing time of the two-component soybean meal adhesive have great influence on the internal bonding strength, static bending strength, elastic modulus, water absorption thickness expansion rate of soybean meal adhesive particleboard The physical and mechanical properties are greatly affected. The formaldehyde emission of soybean meal glue particleboard is low, all of which meet the national standard.

[0043] The indicators of the soybean meal glue particleboard prepared in Example 5 and Exa...

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PUM

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Abstract

The invention discloses a manufacturing method of a particle board based on a soybean meal adhesive. The manufacturing method comprises the following steps that under a normal temperature condition, amodified glue solution is prepared by utilizing a composite modification technology, and then the modified glue solution is compounded with a water-proofing agent, a curing agent and soybean meal powder to obtain the double-component soybean meal adhesive; the soybean meal adhesive is correspondingly added into a stirrer filled with fine wood shavings and a stirrer filled with coarse wood shavings for stirring until discharging is achieved; the fine wood shavings are divided into two equal parts which are correspondingly used as an upper surface layer and a lower surface layer of the particleboard, and the coarse wood shavings are used as a core layer; the lower surface layer, the core layer and the upper surface layer are sequentially subjected to mat formation and pre-pressing so as toform a plate blank; hot pressing process parameters are set, and slab hot pressing is carried out; and after hot pressing is finished, post-treatment procedures such as cooling, sanding and edge sawing are carried out so as to obtain the soybean meal adhesive particle board. According to the manufacturing method of the particle board based on the soybean meal adhesive, the soybean meal adhesive particle board manufactured by adopting the three-layer structure type method has good physical and mechanical properties, good mechanical machining performance and good environmental protection performance, the adhesive which is used is a biomass wood adhesive, does not contain toxic and harmful substances such as formaldehyde and phenol, and is environment-friendly.

Description

technical field [0001] The invention relates to a particle board, in particular to a preparation method of a soybean meal glue particle board, and belongs to the technical field of wood-based panels. Background technique [0002] Particle board (PB) is also called particle board and particle board. It is one of the types of wood-based panels. , screening, separation, and then through sizing, batch paving, pre-pressing, hot pressing, post-processing and other processes to produce a man-made board. The development of the particleboard industry has realized the efficient utilization of wood resources and alleviated the shortage of wood resources in my country. In addition, particle board has been highly valued by the wood-based panel industry because of its wide range of raw material sources, less pollution in the production process, easy laying and forming, secondary processing, and simple operation. Good bearing capacity, high environmental protection factor, stable perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27N3/00B27N3/10B27N3/18B27N3/20
CPCB27N3/002B27N3/10B27N3/18B27N3/203
Inventor 王利军南静娅王春鹏储富祥
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY