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A kind of high-strength straw glue-free plate production process and plate

A production process and straw technology, which is applied in the field of high-strength straw pressing and forming board, can solve the problems of complex plant fiber, complex process and complex structure, etc.

Active Publication Date: 2021-06-08
JIANGSU VOCATIONAL INST OF ARCHITECTURAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, the existing technology of plant fiber extraction is very complicated, such as the Chinese patent (CN200710143948.2 method and equipment for extracting straw fiber), the whole set of equipment needs complex structure, followed by complicated process
[0006] The strength of the existing non-adhesive board is insufficient, and the board formed by simple straw short rods has a lot of internal voids, and the irregularities are easy to form stress concentration, resulting in low strength of the board

Method used

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  • A kind of high-strength straw glue-free plate production process and plate
  • A kind of high-strength straw glue-free plate production process and plate
  • A kind of high-strength straw glue-free plate production process and plate

Examples

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Effect test

no. 1 example

[0031] (1) If Figures 1 to 7 The production process of a kind of straw glue-free board shown, the first embodiment, includes the following steps:

[0032] 1) Fiber extraction: select straws of 30-50 cm, arrange them in parallel, fix one end in the fixed frame 10, superimpose 2-4 layers of straws vertically, soak in normal temperature water for 1-3 hours, put the fixed frame 10 together with the soaked straws Put it on the belt 20 for combing, there are three combing belts 20, fixed and evenly distributed spikes on the belt 20, the diameter of the spikes is within the range of 1-2mm, and the gaps between the spikes on each combing belt 20 are different, There are three types of 3-5mm, 2-3mm, and 0.5-1mm. The straw is combed by the comb belt 20 with the gap of 3-5mm, 2-3mm, and 0.5-1mm in turn, and the straw is combed to 0.5-1mm. The plant fibers are cut from the fixed frame to obtain 20-40cm long plant fibers, the moisture content of the fibers is controlled at 5.6-6.3%, and ...

no. 2 example

[0045] (2) A production process of a straw-free glue-free plate, the second embodiment, comprising the following steps:

[0046] 1) Fiber extraction: select straws of 30-50 cm, arrange them in parallel, fix one end in the fixed frame 10, superimpose 2-4 layers of straws vertically, soak in normal temperature water for 1-3 hours, put the fixed frame 10 together with the soaked straws Put it on the belt 20 for combing, there are three combing belts 20, fixed and evenly distributed spikes on the belt 20, the diameter of the spikes is within the range of 1-2mm, and the gaps between the spikes on each combing belt 20 are different, There are three types of 3-5mm, 2-3mm, and 0.5-1mm. The straw is combed by the comb belt 20 with the gap of 3-5mm, 2-3mm, and 0.5-1mm in turn, and the straw is combed to 0.5-1mm. The plant fibers are cut from the fixed frame and cut into 5-8cm long fibers, the moisture content of the fibers is controlled at 5.6-6.3%, and mixed with 3.2-3.7% alkali soluti...

no. 3 example

[0052] (3) A production process of a straw-free glue-free board, the third embodiment, comprising the following steps:

[0053] 1) Fiber extraction: select straws of 30-50 cm, arrange them in parallel, fix one end in the fixed frame 10, superimpose 2-4 layers of straws vertically, soak in normal temperature water for 1-3 hours, put the fixed frame 10 together with the soaked straws Put it on the belt 20 for combing, there are three combing belts 20, fixed and evenly distributed spikes on the belt 20, the diameter of the spikes is within the range of 1-2mm, and the gaps between the spikes on each combing belt 20 are different, There are three types of 3-5mm, 2-3mm, and 0.5-1mm. The straw is combed by the comb belt 20 with the gap of 3-5mm, 2-3mm, and 0.5-1mm in turn, and the straw is combed to 0.5-1mm. The plant fibers are cut from the fixed frame to obtain 20-40cm long plant fibers, the moisture content of the fibers is controlled at 5.6-6.3%, and the alkali solution is mixed ...

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Abstract

A straw-free glue-free board and its production process, comprising the following steps: 1) extracting fiber: extracting plant fiber from straw, steam-exploding the plant fiber and mixing it with an alkali solution to activate it; 2) short-stem steam-exploding: making the straw Short rod, steam-explode the short rod and mix it with alkali solution to activate; 3) Steam explosion of powder: make straw into powder, steam-explode the powder and mix it with alkali solution to activate; To 3) the obtained materials are mixed and pressed into sheets. The plate produced by this process has a dense structure, strong continuity, and excellent mechanical properties.

Description

technical field [0001] The invention relates to a straw pressed board, in particular to a high-strength straw pressed board. Background technique [0002] The way to completely solve the above problems is to find the glueless bonding technology of straw wood-based panels. The glueless bonding technology mainly relies on the three major components of the straw itself, cellulose, hemicellulose and lignin, to react under high temperature and pressure to form an insoluble resin, and then glue the fibers in the straw together and press them into a board. Due to the compactness of the raw material structure of straw and the low content of the active groups of the three major components in the raw material, it is necessary to activate the straw to destroy the cell wall structure and improve its reactivity. [0003] Activation treatment mainly includes physical method, chemical method and biological method. Physical methods mainly include mechanical thermal grinding method and ste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B27N1/00B27L11/08B27N3/04D01B1/10D02G3/04D02J1/00D03D15/267D03D15/217D03D13/00
CPCB27L11/08B27N1/00B27N3/04D01B1/10D02G3/04D02J1/00D03D13/00D10B2101/06D10B2201/01D03D15/47B27N1/02B27N3/007B27N3/02
Inventor 赵晓倩解恒参陈宏振刘盛贤
Owner JIANGSU VOCATIONAL INST OF ARCHITECTURAL TECH