CN102001122A - Method for manufacturing structural mould-pressing bamboo/wooden sectional material - Google Patents
Method for manufacturing structural mould-pressing bamboo/wooden sectional material Download PDFInfo
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- CN102001122A CN102001122A CN 201010510008 CN201010510008A CN102001122A CN 102001122 A CN102001122 A CN 102001122A CN 201010510008 CN201010510008 CN 201010510008 CN 201010510008 A CN201010510008 A CN 201010510008A CN 102001122 A CN102001122 A CN 102001122A
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Abstract
The invention relates to a method for manufacturing a structural mould-pressing bamboo/wooden sectional material. The structural mould-pressing bamboo/wooden sectional material is prepared by using edge bamboo strips, bamboo tips or minor-diameter bamboos as bamboo materials and using slabs, firewood or wooden cores as wooden materials through the steps of soaking the bamboo materials in alkalescent liquid to carry out softening process and soaking the wooden materials in hot water to carry out softening process; then mixing the obtained bamboo materials and wooden materials, and carrying out mechanical rolling on the obtained mixture so as to obtain a reticular bamboo/wood bunch, wherein in the reticular bamboo/wood bunch, the structures of the bamboo/wood materials are loose, and the fiber parts of the bamboo/ wood materials are connected; and drying the obtained reticular bamboo/wood bunch until the moisture content of the reticular bamboo/wood bunch is 8 to 15 percent, then sequentially carrying out sizing, combined die compression, heating and solidification on the dried bamboo/wood bunch so as to obtain the sectional material. The invention provides a method for manufacturing a structural mould-pressing bamboo/wooden sectional material which is prepared by using the surplus bamboo/wood processing materials as raw materials through the steps of carrying out mixed rolling processing on bamboo/wooden materials and then carrying out compression molding, so that a bamboo/wooden sectional material with high strength and large section can be processed, and the processed bamboo/wooden sectional materials can be used as the beams and columns of wood-framed houses.
Description
Technical field
The present invention relates to the manufacture method of a kind of structure with mold pressing bamboo wooden profile material.
Background technology
At present, use separately wooden, bamboo matter is a lot of as the method that raw material manufacture section bar, as the processing of wooden profile material: a kind of is that timber is processed into fiber, wood shavings or veneer, applying glue, pressing mold, hot-press gluing becomes pressing then.Another kind is after plank or thicker wood plywood are processed into lath, applying glue again.The wooden profile material intensity that preceding a kind of method is produced is lower, and sectional area is less, can not bear bigger load as structural material; Though the wooden profile material intensity that the latter processed is higher, sectional area is bigger, can bear bigger load and as structural material, existing to be raw material with the high-quality timber of China's shortage, and the low shortcoming of processing and utilization rate.The processing of bamboo matter section bar generally is that mao bamboon is split into silk, applying glue, pressing mold.This processing mode is many to be that raw material are processed with full bamboo, and it is single to draw materials, the raw material supply anxiety, and destroy the bamboo fiber structure easily.It is that raw material are processed the well-thought-out plan wooden profile material that material therefor of the present invention all utilizes wood machining residues and China's south reserves to enrich the strong bamboo surplus material of processing of power of regeneration.
Summary of the invention
Technical problem to be solved by this invention provides a kind of with bamboo and wood material industrial wood waste---and thin bamboo strips used for weaving edge strip, bamboo wood taper or dwarf bamboo are as the bamboo raw material, slab, firewood carbon material or reel are as wood material, adopt bamboo wood to mix roll-in processing, the method of compression molding, process the intensity height, the bamboo wooden profile material that sectional area is big, it can be as the beam of wooden house, the material of post.
For addressing the above problem, technical scheme of the present invention is:
A kind of structure manufacture method of mold pressing bamboo wooden profile material, with thin bamboo strips used for weaving edge strip, bamboo wood taper or dwarf bamboo as the bamboo raw material, with slab, firewood carbon material or reel as wood material, described bamboo matter is handled through the alkalescent soaked with liquid is softening, described wooden through the softening processing of hydro-thermal, the bamboo matter that to handle then and wooden mixing, obtain the netted bamboo wood bundle that the loose and bamboo and woods fiber of bamboo wood structure partly links to each other through mechanical roll-in, then netted bamboo wood bundle is dried to moisture content 8～15%, applying glue, the combination pressing mold is heated and cured into section bar.
Preferably, described alkalescent liquid is NaOH solution, and concentration is 1～3%, and soak time is 60 ~ 84h.
Preferably, in the softening processing of described wooden hydro-thermal of carrying out, the hot water temperature is 50 ~ 95 ℃, and soak time is 24 ~ 48h.
Preferably, it is 8 ~ 12% that described drying steps makes the raw material water content, and baking temperature is 60 ~ 95 ℃, and be 24 ~ 48h drying time.
Preferably, the roll squeezer that uses in the described mechanical roll-in step is made up of many rollers that groove is carved with on the surface.
Preferably, the adhesive in the described applying glue step is phenolic resins or Lauxite.
Preferably, adopt the high pressure impregnation in the described applying glue step, the vacuum mode of coming unstuck.
Preferably, during applying glue bamboo wood is restrainted in the adhesive that is soaked in the hermetically sealed can, charging into pressure-air in hermetically sealed can makes adhesive under a plurality of atmospheric pressures, it is intrafascicular that the degree of depth enters netted bamboo wood, in hermetically sealed can, vacuumize the manufacturing negative pressure then, the intrafascicular unnecessary adhesive of netted bamboo wood is extracted out, thus the consumption of reduction adhesive.
Preferably, described combination pressing mold step is specific as follows: the wood of the bamboo after applying glue bundle paralled laminate is mated formation, send press then to and carry out horizontal direction and vertical direction pressurization, its unit pressure is 15 ~ 30MPa, will make up the pressing mold locking positioning again.
The invention provides a kind of with bamboo and wood material industrial wood waste---with thin bamboo strips used for weaving edge strip, bamboo wood taper or dwarf bamboo as the bamboo raw material, with slab, firewood carbon material or reel as wood material, adopt bamboo wood to mix roll-in processing, the method of compression molding, process the intensity height, the bamboo wooden profile material that sectional area is big, it can be as the beam of wooden house, the material of post.
The specific embodiment
Further describe the present invention below in conjunction with embodiment, but protection scope of the present invention is not limited to this.
Concrete implementation step of the present invention is:
1. with bamboo and wood material industrial wood waste---with thin bamboo strips used for weaving edge strip, bamboo wood taper or dwarf bamboo as the bamboo raw material, with slab, firewood carbon material or reel as wood material.The bamboo raw material directly soaks softening in alkalescent liquid, and described alkalescent liquid is NaOH solution, and concentration is 2%, and soaking temperature is a normal temperature, and the time is 72 h.The softening mode of wood material is a hydrothermal treatment consists, and hydrothermal treatment consists is to soak in temperature is 75 ℃ water, and soak time is 36h.
2. bamboo matter, wooden mixing after will softening then, by carrying out roll-in by the many surface is carved with on the Continuous Roller press that the roller of groove forms, it is looser to be processed into structure, and the netted bamboo wood bundle that the bamboo and wood pars fibrosa is connected.
3. netted bamboo wood bundle is carried out drying in dry kiln, baking temperature is 75 ℃, and be 36h drying time, makes its moisture content be reduced to 10%.
4. bamboo wood bundle is soaked in the adhesive in the hermetically sealed can, applies phenolic resin glue or melamine resin glue (in glue, can add fire-retardant fireproof agent and anticorrisive agent in case of necessity) that low content of free formaldehyde discharges, adopt high pressure impregnation, the vacuum mode of coming unstuck during applying glue.Adopt the high pressure impregnation, the vacuum mode of coming unstuck, needing to add in hermetically sealed can pressure-air makes adhesive under a plurality of atmospheric pressures, the degree of depth enters netted bamboo wood bundle, also in hermetically sealed can, vacuumize the manufacturing negative pressure after finishing, the intrafascicular unnecessary adhesive of netted bamboo wood is extracted out, thus the consumption of reduction adhesive.Use the chain-type pneumatic conveying dryer dry once more behind the impregnation, to reduce the moisture content of bamboo wood bundle.Its baking temperature is 60 ℃, and be 16h drying time, to reduce its moisture content.
5. earlier according to the cross sectional shape and the size of different wooden profile materials, design and process the combination pressing mold that constitutes by a plurality of parts.In the combination pressing mold, the netted bamboo wood bundle after the applying glue is mated formation by the multidirectional lamination of design combination collocation according to the requirement of strength of section bar in the combination pressing mold, send special-purpose press then to it is carried out horizontal direction and vertical direction pressurization, its unit pressure is 23MPa, parts by the combination pressing mold produce relative displacement, netted wood bundle is compressed into required cross sectional shape and certain size De Pi material, will makes up the pressing mold locking positioning with several bolts again.After treating special-purpose press release,, release special-purpose press, and deliver to and add hot gluing in the curing room the blank in combination pressing mold after the bolt locking and the combination pressing mold.
6. the blank in the combination pressing mold is under 100 ℃ of conditions solidifying indoor temperature, and heating 36h makes the synthetic resin adhesive curing in the blank, and when making its moisture content be reduced to 12% left and right sides, stops heating.When being reduced to below 40 ℃, kiln temperature goes out curing room, under normal temperature laboratory, placed 1 day, dismounting combination pressing mold takes out it from mould, in the balance cylinder, placed ten days, carry out wet process such as isothermal, the internal stress that makes it in mold process to be produced discharges fully, avoids deforming, expand, ftractureing because of the variation of moisture content.
7. after the burr of bamboo and wood matter section bar limit, angular position being rejected, carry out sanding surface and repairing, carry out incrustation (as sticking bamboo, wooden thin slice etc.), at last at its spraying 3 roads, surface paint.
Claims (9)
1. a structure is with the manufacture method of mold pressing bamboo wooden profile material, it is characterized in that, with the thin bamboo strips used for weaving edge strip, bamboo wood taper or dwarf bamboo are as the bamboo raw material, with slab, firewood carbon material or reel are as wood material, described bamboo matter is handled through the alkalescent soaked with liquid is softening, described wooden through the softening processing of hydro-thermal, the bamboo matter that to handle then and wooden mixing, it is loose to obtain the bamboo wood structure through mechanical roll-in, and the netted bamboo wood bundle that bamboo and woods fiber partly links to each other, then netted bamboo wood bundle is dried to moisture content 8～15%, applying glue, the combination pressing mold is heated and cured into section bar.
2. structure according to claim 1 is characterized in that with the manufacture method of mold pressing bamboo wooden profile material described alkalescent liquid is NaOH solution, and concentration is 1～3%, and soak time is 60 ~ 84h.
3. structure according to claim 1 is characterized in that with the manufacture method of mold pressing bamboo wooden profile material in the softening processing of described wooden hydro-thermal of carrying out, the hot water temperature is 50 ~ 95 ℃, and soak time is 24 ~ 48h.
4. structure according to claim 1 is characterized in that with the manufacture method of mold pressing bamboo wooden profile material it is 8 ~ 12% that described drying steps makes the raw material water content, and baking temperature is 60 ~ 95 ℃, and be 24 ~ 48h drying time.
5. structure according to claim 1 is characterized in that with the manufacture method of mold pressing bamboo wooden profile material, and the roll squeezer that uses in the described mechanical roll-in step is made up of many rollers that groove is carved with on the surface.
6. structure according to claim 1 is characterized in that with the manufacture method of mold pressing bamboo wooden profile material the adhesive in the described applying glue step is phenolic resins or Lauxite.
According to claim 1 or 6 described structures with the manufacture method of mold pressing bamboo wooden profile materials, it is characterized in that, adopt high pressure impregnation, the vacuum mode of coming unstuck in the described applying glue step.
8. according to claim 1 or 6 described structures manufacture method with mold pressing bamboo wooden profile materials, it is characterized in that, during applying glue bamboo wood is restrainted in the adhesive that is soaked in the hermetically sealed can, charging into pressure-air in hermetically sealed can makes adhesive under a plurality of atmospheric pressures, it is intrafascicular that the degree of depth enters netted bamboo wood, in hermetically sealed can, vacuumize the manufacturing negative pressure then, the intrafascicular unnecessary adhesive of netted bamboo wood is extracted out, thus the consumption of reduction adhesive.
9. the structure according to claim 1 manufacture method of mold pressing bamboo wooden profile material, it is characterized in that, described combination pressing mold step is specific as follows: the wood of the bamboo after applying glue bundle paralled laminate is mated formation, send press then to and carry out horizontal direction and vertical direction pressurization, its unit pressure is 15 ~ 30MPa, will make up the pressing mold locking positioning again.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010510008 CN102001122A (en) | 2010-10-18 | 2010-10-18 | Method for manufacturing structural mould-pressing bamboo/wooden sectional material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010510008 CN102001122A (en) | 2010-10-18 | 2010-10-18 | Method for manufacturing structural mould-pressing bamboo/wooden sectional material |
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| CN102001122A true CN102001122A (en) | 2011-04-06 |
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| CN 201010510008 Pending CN102001122A (en) | 2010-10-18 | 2010-10-18 | Method for manufacturing structural mould-pressing bamboo/wooden sectional material |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352117A (en) * | 2011-08-16 | 2012-02-15 | 浙江大学 | Interfacial compatibilization method for natural fiber reinforced resin-based composite material |
| CN104354205A (en) * | 2014-09-23 | 2015-02-18 | 德清德沃装饰材料有限公司 | Growth ring surface decorated wood veneer |
| CN104626330A (en) * | 2015-03-11 | 2015-05-20 | 邵武市美好竹木有限公司 | Method for producing plybamboos by using bamboo three-remains |
| CN105940983A (en) * | 2016-04-26 | 2016-09-21 | 南京林业大学 | Method for manufacturing degradable flower pot with bamboo shoot shells |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104143A (en) * | 1993-12-20 | 1995-06-28 | 蒋道友 | Bamboo plywood and bamboo woven plywood production method |
| CN2611145Y (en) * | 2002-10-28 | 2004-04-14 | 南京林业大学 | Composite material made up of wood and bamboo |
| CN1994704A (en) * | 2006-01-05 | 2007-07-11 | 赵仁杰 | Method for manufacturing moulded wood section bar for construction |
| CN101537648A (en) * | 2009-04-30 | 2009-09-23 | 福建建州竹业科技开发有限公司 | Process for producing bamboo fiber |
-
2010
- 2010-10-18 CN CN 201010510008 patent/CN102001122A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104143A (en) * | 1993-12-20 | 1995-06-28 | 蒋道友 | Bamboo plywood and bamboo woven plywood production method |
| CN2611145Y (en) * | 2002-10-28 | 2004-04-14 | 南京林业大学 | Composite material made up of wood and bamboo |
| CN1994704A (en) * | 2006-01-05 | 2007-07-11 | 赵仁杰 | Method for manufacturing moulded wood section bar for construction |
| CN101537648A (en) * | 2009-04-30 | 2009-09-23 | 福建建州竹业科技开发有限公司 | Process for producing bamboo fiber |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352117A (en) * | 2011-08-16 | 2012-02-15 | 浙江大学 | Interfacial compatibilization method for natural fiber reinforced resin-based composite material |
| CN104354205A (en) * | 2014-09-23 | 2015-02-18 | 德清德沃装饰材料有限公司 | Growth ring surface decorated wood veneer |
| CN104626330A (en) * | 2015-03-11 | 2015-05-20 | 邵武市美好竹木有限公司 | Method for producing plybamboos by using bamboo three-remains |
| CN105940983A (en) * | 2016-04-26 | 2016-09-21 | 南京林业大学 | Method for manufacturing degradable flower pot with bamboo shoot shells |
| CN105940983B (en) * | 2016-04-26 | 2019-03-05 | 南京林业大学 | The method of Compositions of Bamboo Shoot Shell production degradative flower bowl |
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Application publication date: 20110406 |