CN100387414C - Chipboard made with light-wt. cement and its prodn. method - Google Patents
Chipboard made with light-wt. cement and its prodn. method Download PDFInfo
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- CN100387414C CN100387414C CNB2006100921539A CN200610092153A CN100387414C CN 100387414 C CN100387414 C CN 100387414C CN B2006100921539 A CNB2006100921539 A CN B2006100921539A CN 200610092153 A CN200610092153 A CN 200610092153A CN 100387414 C CN100387414 C CN 100387414C
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Abstract
The present invention relates to a light cement-bonded wood chipboard which mainly comprises raw materials and portions by weight: 1.0 portion of absolute dry shavings, 0.5 to 3.0 portions of cement and 0.02 to 0.24 portion of auxiliary agent, wherein the length of the shavings is from 30mm to 150mm, and the density of the board is from 0.5 g/cm3 to 0.8 g/cm3. The light cement-bonded wood chipboard has the production process that 1.0 portion of absolute dry shavings by weight (the same as follows) with the length larger than 30mm is selected, 0 to 0.5 portion of absolute dry stuffing is selected, 0.5 to 3 portions of cement are selected, 0.02 to 0.24 portion of auxiliary agent is selected, and 1.0 to 2.0 portions of water are selected; the raw materials are stirred or sprayed uniformly; the raw materials are paved into a blank board and are pressed in a cold mode; the pressure is from 0.2MPa to 1MPa, and the cold pressing time is from 20 to 40 hours. The molded board is maintained naturally under the condition of room temperature. The light cement-bonded wood chipboard can be widely used for buildings such as quakeproof buildings, studios and indoor top surfaces. Compared with the prior art, the present invention has the advantages of light weight, high strength and good sound insulation effect.
Description
Technical field
The present invention relates to a kind of with cement make adhesive, the bamboo wood wool is the lightweight synthetic plate producing process of primary raw material.
Background technology
With the particieboard that organic synthesis adhesive such as Lauxite, phenolic resins are made, because of it contains free formaldehyde, frost resistance is poor, application is subjected to necessarily placing restrictions on, and is not the suitable material as body of wall.Along with the raising of people's living standard, the fast development of building industry proposes higher requirement to materials for wall: light-weight aseismatic, fire protection flame retarding, sound-insulating, high strength, environment-friendly type.In view of the above, cement-bonded wood chipboard arises at the historic moment.Make a general survey of the research and the production of international and domestic cement-bonded wood chipboard, be absorbed in density at 1.0-1.3g/cm
3The cement-bonded wood chipboard that is used for Side fascia, to density less than 1.0g/cm
3Cement-bonded wood chipboard do not set foot in so far.Be difficult to satisfy the demand of light-high-strength cement-bonded wood chipboard.
At present, press the cement-bonded wood chipboard of the usual explained hereafter of the industry, the amount ratio of its cement and wood shavings (being called for short ash wood ratio), the outdoor use plate is got 2.3-3.0, panel density 1.2-1.3g/cm
3Indoor plate is got 1.5-2.0, panel density 1.0-1.7g/cm
3In the common process, the wood shavings size of employing is: length is 20-30mm, width 4-8mm, thickness 0.2-0.4mm.
CN1098226C discloses the patented technology of six Mr.'s designs such as Ye Liangming " a kind of quick-setting wooden cement shaving board and preparation method thereof ", will cold pressing to change hot pressing into to quicken curing, shortens the production cycle of cement-bonded wood chipboard, boosts productivity.But this patented technology does not relate to the development problem of light cement particieboard yet.
Summary of the invention
The objective of the invention is to design that a kind of prior art still fails to touch, and in the actual life, particularly the good light cement particieboard production method of light-high-strength, sound insulation and fire resistance that in building industry, very needs again.
Purpose of the present invention can realize by following measure: production process is: select for use over dry wood shavings 1.0 weight portions, over dry filler 0-0.5 weight portion, cement 0.5-3 part, auxiliary agent 0.02-0.24 weight portion, the stirring of water 1.0-2.0 weight portion and the spraying of length＞30mm even, mat formation into slab, cold pressing, pressure 0.2-1MPa, the time 20-40 hour min that colds pressing, the sheet material of moulding is in room temperature condition natural curing.
Purpose of the present invention can also be come perfect with following measure: the suitable dimension of wood shavings is: length is 30-150mm, width 4-18mm, thickness 0.2-0.6mm.
Description of drawings
Accompanying drawing is technological process of production figure of the present invention.
The specific embodiment
The present invention will now be further detailed embodiment: auxiliary agent is at least a in phosphorus trichloride, calcium sulfate, calcium chloride, magnesium chloride, iron chloride, sodium fluoride, the diethanol amine; Also has 0.5 part of broken wood shavings and sawdust in the raw material as filler.
The raw material of ten embodiment and the proportioning of weight portion thereof are listed as into following table:
Embodiment 1 (weight portion proportioning numeral in showing in the contrast):
With length greater than wood shavings (over dry) 1 weight portion of the little timber of the density of 3cm (100kg for example, do same conversion down), filler 0.3 weight portion (broken wood shavings and the sawdust of 30kg) of over dry, surpass portland cement 0.5 weight portion (50kg), the selection of auxiliary calcium chloride of 425 labels, consumption 0.03 weight portion (3kg), water 1.5 weight portions (150kg) mix are even, carrying out air-flowing type or mechanical type mats formation, adopt into the buttress pressurization, cold pressing, pressure 1.0MPa, pressurizeed 30 hours, and checked classification, warehouse-in after the room temperature natural curing.
Embodiment 2-10 can make this light cement particieboard with embodiment 1 identical method by the weight portion proportioning of last each raw material of table.
The present invention is preferred with embodiment 2,3,6.
For obtaining comparatively ideal lightweight, high strength, light cement particieboard that the sound isolating and flame-retardant performance is good, need there emerged a reasonable range to ash wood ratio, wood shavings length, the aspects such as pressure of colding pressing, for this reason, length, the ash wood that wood shavings is divided into Three Estate is 0.6g/cm than increasing progressively, design over dry density gradually
3, pressure is 1.0MPa, adopts Portland cement, 0.03 weight portion calcium chloride to make auxiliary agent, thickness of slab 10mm, the compacting and repeat (process conditions are listed in the table below) 5 times of dividing into groups:
| Group number | Wood shavings size (mm) | The wooden water ratio of ash | (h) colds pressing the time |
| 1 | 30-35 * 8-18 * 0.2-0.6 length is representative with 3cm | 0.5∶1∶1.5 1∶1∶1.5 1.5∶1∶1.5 2∶1∶1.5 | 20 |
| 2 | 54-66 * 8-18 * 0.2-0.6 length is representative with 6cm | 0.5∶1∶1.5 1∶1∶1.5 1.5∶1∶1.5 2∶1∶1.5 | 20 |
| 3 | 84-100 * 8-18 * 0.2-0.6 length is representative with 9cm | 0.5∶1∶1.5 1∶1∶1.5 1.5∶1∶1.5 2∶1∶1.5 | 20 |
The plate (moisture content 12%) that each group is repeated 5 times carries out density (g/cm
3) measure, then see the following form than the density mean value under the different situations at wood shavings length, ash wood:
By last two tables as seen, under the process conditions in the table, select the wood shavings of the little seeds of density of wood such as China fir wood shavings, paulownia wood wood shavings for use, the density＜0.8g/cm of the cement-bonded wood chipboard that makes
3The change of the length variations of wood shavings and grey wooden ratio, the former is less to the influence of density, and the latter is bigger.
The slab that above-mentioned group system is got carries out the mensuration of MOR again, and MOR (MPa) mean value of different wood shavings length, different grey wooden ratios sees the following form:
The MOR and the wood shavings length that reflect slab in the table have extremely significant positive correlation, and the influence of the MOR of ash wood comparison slab is also very remarkable.
The slab that above-mentioned group system is got carries out elastic modulus detection again, and the mean value of the elastic modelling quantity (GPa) of different wood shavings length, different grey wooden ratios sees the following form:
Find out in the table that when wood shavings length increased at ash wood ratio, the elastic modelling quantity trend increased.
The influence of above-mentioned slab being carried out variance analysis, the different variance analysis wood shavings of two sample length, ash wood comparison MOR, elastic modelling quantity is extremely significant.
Analysis-by-synthesis and test, select wood shavings length 5-8cm, grey wooden for use than 1-2: 1, the process conditions of pressure 0.8MPa get off to produce the requirement that the light cement particieboard more can reach light-high-strength.In concrete production practices, it is fixed that the employing of process conditions should come with the customer requirements of varying strength, sound insulation, quality size.
The difference of the cement-bonded wood chipboard MOR (MPa) that following table explanation the present invention and conventional method are produced:
Numeral reflection wood shavings length surpasses 3cm in the table, when pressure is controlled at 1.0MPa, with same grey wooden ratio, the MOR of the light cement particieboard of production surpasses the cement-bonded wood chipboard that wood shavings length is produced greater than the conventional method of 2MPa less than 3cm, pressure, reaches the purpose of light-high-strength.
This light cement particieboard has light weight, intensity height compared to existing technology, and good advantages such as soundproof effect are arranged, and is particularly suitable in antiseismic structure, broadcasting studio, the architectural application of indoor top surface.
Claims (2)
1. light cement particieboard production method, it is characterized in that production process is: select for use over dry wood shavings 1.0 weight portions, over dry filler 0-0.5 weight portion, cement 0.5-3 weight portion, auxiliary agent 0.02-0.24 weight portion, the stirring of water 1.0-2.0 weight portion and the spraying of length＞30mm even, mat formation into slab, in press, cold pressing, pressure 0.2-1MPa, colded pressing time 20-40 hour, the sheet material of moulding is in room temperature condition natural curing.
2. light cement particieboard production method as claimed in claim 1 is characterized in that the suitable dimension of wood shavings is: length is 30-150mm, width 4-18mm, thickness 0.2-0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100921539A CN100387414C (en) | 2006-06-02 | 2006-06-02 | Chipboard made with light-wt. cement and its prodn. method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100921539A CN100387414C (en) | 2006-06-02 | 2006-06-02 | Chipboard made with light-wt. cement and its prodn. method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1861347A CN1861347A (en) | 2006-11-15 |
| CN100387414C true CN100387414C (en) | 2008-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100921539A Active CN100387414C (en) | 2006-06-02 | 2006-06-02 | Chipboard made with light-wt. cement and its prodn. method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103372901B (en) * | 2012-04-12 | 2017-03-29 | 上海杰事杰新材料(集团)股份有限公司 | A kind of preparation method of manufacturing hemp stalk composite materials |
| CN103121815A (en) * | 2013-02-01 | 2013-05-29 | 福建农林大学 | Light cement and bamboo composite and manufacturing method thereof |
| WO2014137294A1 (en) * | 2013-03-06 | 2014-09-12 | Eidgenoessische Technische Hochschule Zurich (Swiss Federal Institute Of Technology Zurich) | Bamboo composite material for structural applications and method of fabricating the same |
| CN104072064B (en) * | 2014-07-11 | 2016-05-04 | 福建农林大学 | Adopt paper white sludge to prepare the method for light cement/bamboo wood composite |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11245204A (en) * | 1998-02-27 | 1999-09-14 | Koa Funenban Kogyo Kk | Manufacture of wood chip and wood cement board using wood chip |
| WO2001096256A2 (en) * | 2000-06-13 | 2001-12-20 | Meinhard Meier | Component in the form of a plate, a strand or a moulded body made out of natural fibres or shavings linked by a binding agent, having the form of a semi-finished or finished product, method for the production thereof, and method for coating or repairing the surface of such moulded bodies |
| CN1098226C (en) * | 2000-06-15 | 2003-01-08 | 浙江林学院 | Quick-solidified wooden cement shaving board and its production method |
| CN1537822A (en) * | 2003-10-24 | 2004-10-20 | 南京新人类板业有限公司 | Xylon reinforced cement slab and its production technology |
-
2006
- 2006-06-02 CN CNB2006100921539A patent/CN100387414C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11245204A (en) * | 1998-02-27 | 1999-09-14 | Koa Funenban Kogyo Kk | Manufacture of wood chip and wood cement board using wood chip |
| WO2001096256A2 (en) * | 2000-06-13 | 2001-12-20 | Meinhard Meier | Component in the form of a plate, a strand or a moulded body made out of natural fibres or shavings linked by a binding agent, having the form of a semi-finished or finished product, method for the production thereof, and method for coating or repairing the surface of such moulded bodies |
| CN1098226C (en) * | 2000-06-15 | 2003-01-08 | 浙江林学院 | Quick-solidified wooden cement shaving board and its production method |
| CN1537822A (en) * | 2003-10-24 | 2004-10-20 | 南京新人类板业有限公司 | Xylon reinforced cement slab and its production technology |
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| CN1861347A (en) | 2006-11-15 |
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Address after: 311300 No. 88 North Ring Road, Jincheng Town, Ling'an City, Zhejiang Province Patentee after: ZHEJIANG A & F University Address before: 311300 Zhejiang city of Ling'an Province Jin town Kam Street No. 252 Patentee before: Zhejiang A&F University |
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Effective date of registration: 20160608 Address after: 323800 Zhejiang Province, Lishui City Qingyuan Qingyuan Industrial Park (KIKUSUI industrial district) Patentee after: ZHEJIANG JIUCHUAN BAMBOO & WOOD Co.,Ltd. Address before: 311300 No. 88 North Ring Road, Jincheng Town, Ling'an City, Zhejiang Province Patentee before: Zhejiang A & F University |