CN101628441A - Manufacturing method of steam cured bamboo building block supporting plate - Google Patents

Manufacturing method of steam cured bamboo building block supporting plate Download PDF

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Publication number
CN101628441A
CN101628441A CN200910304315A CN200910304315A CN101628441A CN 101628441 A CN101628441 A CN 101628441A CN 200910304315 A CN200910304315 A CN 200910304315A CN 200910304315 A CN200910304315 A CN 200910304315A CN 101628441 A CN101628441 A CN 101628441A
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CN
China
Prior art keywords
bamboo
supporting plate
impregnation
building block
time
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN200910304315A
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Chinese (zh)
Inventor
杜春贵
刘志坤
于红卫
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Zhejiang A&F University ZAFU
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Zhejiang Forestry College
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Forestry College filed Critical Zhejiang Forestry College
Priority to CN200910304315A priority Critical patent/CN101628441A/en
Publication of CN101628441A publication Critical patent/CN101628441A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a manufacturing method of a steam cured bamboo building block supporting plate, which aims to solve the technical problem of providing a bamboo building block supporting plate with the advantages of temperature resistance, moisture resistance and small deformation rate and can be reused. The manufacturing method of the invention comprises the following steps: thermally processing a plurality of bamboo mats and bamboo curtains formed by knitting bamboo strips; dipping the bamboo mats and the bamboo curtains in phenolic resin and then drying; overlapping according to the required thickness; thermally pressing; and sealing peripheries. The invention is characterized in that the bamboo strips are taken from surfaces of parts near to the green part of bamboo, the green part of which is removed, wherein the thickness of the bamboo strips is less than or equal to 1 mm; in the gum dipping process, the bamboo mats and the bamboo curtains are dipped in the phenolic resin, the molecular weight of which is 200-400, for several times; in the thermally pressing process, the plate is firstly preheated at low temperature and then pressed at high temperature and high pressure, and finally, the pressure of the plate is released in a sectional type; and in the periphery sealing process, the four peripheries of the supporting plate, the edges of which are cut, are sealed by epoxy resin gum or phenolic resin coating.

Description

The manufacture method of steam cured bamboo building block supporting plate
Technical field
The present invention relates to a kind of building maintenance facility, specifically is a kind of manufacture method of steam cured bamboo building block supporting plate.
Background technology
The forbidding of solid clay brick is for vast market has been opened up in the development of this novel wall material of building block.Building block is based on concrete segment, and it must be through the maintenance link in manufacture process.In the north, often building block is positioned on the supporting plate in the winter time, behind lamination, put into kiln, maintenance is 8 ~ 20 hours under the atmospheric steam condition, and this requires supporting plate that good rigidity and dimensional stability must be arranged.
When steam curing, that supporting plate often is in is dried, under the working environment of wet alternate, wooden, bamboo matter supporting plate is easy to crack, distortion and damaging, and the plastics supporting plate is also yielding and damage steel supporting plate easy-to-rust.
Summary of the invention
The technical issues that need to address of the present invention are, in order to overcome the shortcoming of above-mentioned supporting plate, provide a kind of can heatproof, moisture-proof, deformation rate be little, the bamboo building block supporting plate that can use repeatedly.
The manufacture method of steam cured bamboo building block supporting plate of the present invention, by the some bamboo mats and the bamboo curtain splint heat treatment of thin bamboo strips used for weaving braiding, impregnated phenolic resin, drying, thickness lamination on request, hot pressing, border seal is characterized in that:
Described thin bamboo strips used for weaving is taken from the close surf green portion of the bamboo wood surface behind the removal surf green, thickness≤1mm; Because density maximum, intensity near surf green part bamboo in the bamboo wood are the highest, therefore can improve the intensity of supporting plate, reduce its deflection.
Described heat treatment is with some bamboo mats and bamboo curtain splint, logical steam in hermetically sealed can, and heat treatment temperature is 100~120 ℃, and heat treatment time is 1~2h, and steam pressure is 0.2~0.4MPa; This step is for reducing suction, the moisture pick-up properties of supporting plate.
Described impregnation is that the phenolic resins of molecular weight 200~400 (is seen " synthesizing of Water Solvable Low-molecular Weight Phenol-formaldehyde ", " timber industry ", deliver July calendar year 2001), the impregnation time is 3~5min for the first time, impregnation for the second time after the drip-dry, dip time is 1~3min; The impregnation molecular weight that adopts is low, and then impregnability is good; The gradation impregnation can make glue be penetrated in bamboo wood lumen and the cell membrane and go, and not only supporting plate is had enhancing, increases hard effect, and improve the damp proof and anti-water function of supporting plate, has improved dimensional stability.
Described lamination is the crisscross lamination of each layer, and the bamboo curtain splint behind the impregnation is in the centre, and the bamboo mat behind the impregnation is on two surfaces; Crisscross can be individual layer, every two-layer or per three layers staggered.As required, often fold 25~45 layers.
Described hot pressing is first unit pressure 0.8~1.5MPa, and 60~70 ℃ of preheating 5~8min of temperature are heated to 135~155 ℃ again, unit pressure 3.0~4.5MPa pressing plate, and last segmented release obtains the burr plate, and its thickness is generally between 20~40mm; Low pressure preheating in the hot pressing has makes sheet material be difficult for bubbling, can shorten the good action of hot pressing time.
Described border seal is meant the supporting plate after the cutting edge, and with epoxide-resin glue (having commercially available) or phenolic resin coating (for prior art is general, having commercially available), four peripheries of sealing supporting plate are to improve the damp proof and anti-water function of supporting plate.
The produced bamboo building block supporting plate of the inventive method has heatproof, moisture-proof, indeformable advantage, and maintenance is 8 ~ 20 hours under 80 ~ 100 ℃ steam condition, and is indeformable, do not ftracture, can reuse.
The specific embodiment
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment 1: steam cured bamboo building block supporting plate is made by the following method
1) thin bamboo strips used for weaving manufacturing
With the transversal on request well-thought-out plan section of bamboo wood, behind surf green to be removed, the tabasheer, cut open the thin bamboo strips used for weaving of system thickness degree 1.0mm in nearly surf green portion.
2) bamboo curtain splint and bamboo mat heat treatment
Bamboo strip knitting is made into bamboo curtain splint and bamboo mat, places hermetically sealed can afterwards, feed steam and heat-treat.120 ℃ of the heat treated temperature of bamboo curtain splint and bamboo mat, heat treatment time 2h, steam pressure 0.4MPa.
3) bamboo curtain splint and bamboo mat impregnation
Bamboo curtain splint and bamboo mat are rolled into volume, and putting into and filling molecular weight is that the impregnation pond (groove) of 300 pf resin of low molecular weight glue (according to the disclosed technology preparation of front article) is flooded.Go for glue is penetrated in bamboo wood lumen and the cell membrane, improve the damp proof and anti-water function of supporting plate,, adopt the method for graded impregnation during dipping to improve dimensional stability.The impregnation time is 4min for the first time, carries out the impregnation second time again behind the about 20min of glue, and dip time is 2min, drips except that behind the unnecessary adhesive and carries out lamination.
4) lamination
By two-layer one group, each organizes the crisscross lamination that carries out with the bamboo curtain splint behind the dipping, and the individual layer bamboo mat behind the impregnation is (staggered with next-door neighbour's bamboo curtain splint) on supporting plate two surfaces, is combined into the slab of supporting plate.
5) hot pressing
Afterwards slab is put into hot press, under low pressure (unit pressure 1.0MPa), carry out middle low temperature (70 ℃) preheating 5min earlier, be heated to high temperature (140 ℃) afterwards again, under high pressure (unit pressure 4.0MPa) condition, suppress, make steam cured bamboo building block supporting plate burr plate.This routine burr plate thickness is 20mm.
6) border seal
With the bamboo building block supporting plate burr plate cutting edge that makes, seal four peripheries of supporting plate afterwards with 2122 type phenolic resin coatings, to improve the damp proof and anti-water function of supporting plate.

Claims (1)

1. the manufacture method of a steam cured bamboo building block supporting plate, by the some bamboo mats and the bamboo curtain splint heat treatment of thin bamboo strips used for weaving braiding, impregnated phenolic resin, drying, thickness lamination on request, hot pressing, border seal is characterized in that:
Described thin bamboo strips used for weaving is taken from the surface of the close surf green portion of bamboo wood behind the removal surf green, thickness≤1mm;
Described heat treatment is with some bamboo mats and bamboo curtain splint, logical steam in hermetically sealed can, and heat treatment temperature is 100~120 ℃, and heat treatment time is 1~2h, and steam pressure is 0.2~0.4MPa;
Described impregnation is the phenolic resins of molecular weight 200~400, and for the first time the impregnation time is 3~5min, impregnation for the second time after the drip-dry, and dip time is 1~3min;
Described lamination is the crisscross lamination of each layer, and the bamboo curtain splint behind the impregnation is in the centre, and the bamboo mat behind the impregnation is on two surfaces;
Described hot pressing is first unit pressure 0.8~1.5MPa, and 60~70 ℃ of preheating 5~8min of temperature are heated to 135~155 ℃ again, unit pressure 3.0~4.5MPa pressing plate, last segmented release;
Described border seal is meant the supporting plate after the cutting edge, with epoxide-resin glue or phenolic resin coating, and four peripheries of sealing supporting plate.
CN200910304315A 2009-07-14 2009-07-14 Manufacturing method of steam cured bamboo building block supporting plate Pending CN101628441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200910304315A CN101628441A (en) 2009-07-14 2009-07-14 Manufacturing method of steam cured bamboo building block supporting plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910304315A CN101628441A (en) 2009-07-14 2009-07-14 Manufacturing method of steam cured bamboo building block supporting plate

Publications (1)

Publication Number Publication Date
CN101628441A true CN101628441A (en) 2010-01-20

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Application Number Title Priority Date Filing Date
CN200910304315A Pending CN101628441A (en) 2009-07-14 2009-07-14 Manufacturing method of steam cured bamboo building block supporting plate

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CN (1) CN101628441A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104400870A (en) * 2014-10-27 2015-03-11 浙江凯森板业有限责任公司 Method for mixing bamboo woods and bamboo broken materials to manufacture brick machine supporting plate
CN106166771A (en) * 2016-07-18 2016-11-30 中南林业科技大学 A kind of manufacture method of Vitex chinensis Mill. sham wood
CN112776116A (en) * 2021-01-26 2021-05-11 运城学院 Directional staggered bamboo reed filament plate and manufacturing method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104400870A (en) * 2014-10-27 2015-03-11 浙江凯森板业有限责任公司 Method for mixing bamboo woods and bamboo broken materials to manufacture brick machine supporting plate
CN106166771A (en) * 2016-07-18 2016-11-30 中南林业科技大学 A kind of manufacture method of Vitex chinensis Mill. sham wood
CN112776116A (en) * 2021-01-26 2021-05-11 运城学院 Directional staggered bamboo reed filament plate and manufacturing method thereof

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Open date: 20100120