CN1970493A - Extrusion-molded woody cement plate, and production method therefor - Google Patents
Extrusion-molded woody cement plate, and production method therefor Download PDFInfo
- Publication number
- CN1970493A CN1970493A CNA200410030038XA CN200410030038A CN1970493A CN 1970493 A CN1970493 A CN 1970493A CN A200410030038X A CNA200410030038X A CN A200410030038XA CN 200410030038 A CN200410030038 A CN 200410030038A CN 1970493 A CN1970493 A CN 1970493A
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- Prior art keywords
- wood
- minces
- extrusion
- cement
- meal
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00129—Extrudable mixtures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The object of this invention is using woody cement plate scrap pulverized products for an extrusion-molded woody cement plate in an amount as much as possible. This invention provides an extrusion-molded woody cement plate made of main mixed material including cement, woody pulp, woody cement plate scrap and water. Woody cement plate scrap is divided into coarsely pulverized products with a particle size of 75 to 100 mum and finely pulverized products with a particle size of 75 mum, and the extrusion-molded woody cement plate raw material is obtained by adding the coarsely pulverized products of 10 to 20 mass% and the finely pulverized products of 10 to 25 mass% by 20 to 45 mass% in total. This invention also provides producing method for said extrusion-molded woody cement plates.
Description
Technical field
The present invention relates to a kind of Wood cement board made from extrusion molding and manufacture method thereof.
Background technology
In the past, for example being used in the Wood cement board of outer wall material, is by being that the main raw mix and the mixing thing of water are made with the method for writing board shape extrusion molding to cement and wood pulp.
In above-mentioned extrusion molding cement plate, to utilize Wood cement board again, particularly utilize the waste wood crushed material of extrusion molding cement plate comparatively desirable (for example again as part of raw materials, with reference to Japanese patent laid-open 8-229913 communique, No. 2910285 communique of Japanese Patent, No. 3023057 communique of Japanese Patent, No. 3325005 communique of Japanese Patent, the Japanese Patent spy opens the 2001-139363 communique).
For example in Japanese patent laid-open 8-229913 communique, be to use extrusion-molded woody cement plates waste wood crushed material imposed as the fine aggregate of extrusion-molded woody cement plates to prevent the material that absorbs water and handle.
In the past, raw material as extrusion-molded woody cement plates, when utilizing Wood cement board waste wood crushed material again, addition is not in case below 20 quality %, be included in the moisture in the mixing thing of raw mix and water because of absorption as the wood substance component of this Wood cement board waste wood crushed material principal constituent, if so the ratio of water is increased, extrusion molding will worsen.If but the ratio of water is increased, the proportion of product just diminishes, so just the problem of rerum natura deterioration is arranged.
Summary of the invention
As solution to the problems described above, the present invention provides a kind of extrusion-molded woody cement plates, this extrusion-molded woody cement plates is by to cement, wood pulp, Wood cement board waste wood crushed material is that master's the raw mix and the mixing thing extrusion molding of water are made, it is that the fine powder that the meal of 75～1000 μ m minces and granularity is lower than 75 μ m minces that wherein said Wood cement board waste wood crushed material is classified into granularity, and setting makes that the interpolation combined amount that meal minces described in the described raw mix is 10～20 quality %, the interpolation combined amount that described fine powder minces is 10～25 quality %, and the total amount that described meal minces and described fine powder minces reaches 20～45 quality %.
Described Wood cement board waste wood crushed material is that the Wood cement board that is added with fine wood materials is comparatively desirable, and described Wood cement board waste wood crushed material is below the 3mm by hammer mill once to be crushed to granularity, with roller mill this crushed material secondary being crushed to granularity again is below the 1mm, then by this secondary crushed material of classification, it is comparatively desirable to be divided into that meal minces and fine powder minces.
And the present invention also provides a kind of manufacture method of extrusion-molded woody cement plates, it is by raw mix that cement, Wood cement board waste wood meal minces and water are mixing to be mixing thing once containing, add in this once mixing thing again that the Wood cement board fine powder minces and mixingly be the mixing thing of secondary, then to the mixing thing extrusion molding of this secondary, and make gained extrusion molding thing slaking sclerosis.
Granularity is that the meal of 75～1000 μ m minces and contains a large amount of wood substance components, and the wood substance component in the waste wood is because of almost having discharged the material that hinders hardening of cement, so do not hinder hardening of cement, thereby this meal wood substance component that contains by it that minces has reinforced effects.
Pulverize as carrying out secondary with roller mill again, the unhardened part of cement will be exposed to the outside of particle, thereby meal minces and have reactivity, and participation to a certain degree is extruded into the sclerosis of body.
Have again, in the secondary that carries out with roller mill is pulverized, the wood substance component fibrosis during meal minces, reinforced effects improves.
The fine powder that granularity is lower than 75 μ m minces and enters between the pore that is extruded into body or meal mince, and is suppressed to the water-absorbent of body, is suppressed to the expansion or the contraction of body with this, institute so that dimensional stability improve.And fine powder minces and enters between the pore of molding or meal mince by it, homodisperse in molding, and the intensity distribution of molding becomes evenly, makes the molding stabilization.
Be mixed with meal and mince in mixing thing once, this meal minces and absorbs and keep moisture in the once mixing thing.In this once mixing thing, mince also mixing as adding fine powder, moisture during this meal minces is just transferred to during this fine powder minces, this fine powder mince concentrate on that this meal minces around, mince by this fine powder and between this meal minces, to improve the flowability of the mixing thing of secondary, improve extrusion molding, prevent that the superficiality that is extruded into body from worsening.This fine powder minces to mince with this meal and compares, and is few because of its wood substance component, water-absorbent is low, so compare when meal minces with only adding, can reduce the ratio of water, is suppressed to the rerum natura deterioration of body.
Below describe the present invention in detail.
Embodiment
Be used in cement of the present invention, for example have: silicate cement, the portland blast-furnace cement that has perhaps mixed blast-furnace slag in silicate cement has mixed the pulverized fuel ash cement of flyash, has mixed the silica cement of silica materials such as volcanic ash or white scholar, luminite cement, portland blast-furnace slag cement etc.
Be used in wood pulp of the present invention, can use any in dissolving pulps such as sulfite cellulose, soda processes paper pulp, kraft pulp and the mechanical pulp, the comparatively ideal staple length of this wood pulp is 0.5～1.0mm.Have again, be to be that the block paper pulp of 30～50 quality % is pulverized as comparatively ideal wood pulp, and this water ratio be adjusted to the paper pulp of 20～35 quality % water ratio.So-called block paper pulp is meant in the way of system paper engineering, with aschistic stereo block official form for filing a lawsuit slurry dehydration back gains.The kind of block paper pulp is that the bleached kraft pulp (LBKP) of deciduous tree is comparatively desirable, also can sneak into acerose bleached kraft pulp (NBKP) in right amount.
Block paper pulp is so just pulverized easily, is pulled an oar if the water ratio of above-mentioned scope is pulverized better with hammer mill, makes the paper pulp fibrillation.This bulk paper pulp is compared with dry pulp, because of its proportion is little, so pulverize easily, is shortened the pulverizing time.
In addition, as the water ratio that makes the gained wood pulp have above-mentioned scope, the dispersiveness in the mixing thing of raw material just becomes well, and mixing thing has the flowability of appropriateness when extrusion molding.
Having, is above-mentioned scope by the staple length that makes this wood pulp again, just can give full play to reinforced effects, and the dispersiveness in the mixing thing is also good, also can make the extrusion molding raising.
The moisture adjustment of above-mentioned wood pulp usually with the drying of blowing, is undertaken by warm air drying if necessary.
Except that mentioned component, in the present invention, for example also can add: silica powder, silica sand, the powder of silica, water glass, diatomite, rhombspar, silica dioxide granule (silica hume), blast-furnace slag, flyash (volcanic ash), Silasballon (trade(brand)name), perlite etc. contain the material of silicic acid.
In the present invention, also can use Wood cement board waste wood crushed material as raw material.So-called Wood cement board is exactly to contain the cement plate of wood substance components such as wood chip, wood fibre bundle, wood pulp, wolline, wood powder as strongthener, this Wood cement board uses in building panels such as outer wall material in a large number, is absorbed in the utilization again of its waste wood of research recently.Yet most possible utilizing again is that the raw material of this waste wood crushed material as Wood cement board used.In order to improve utilising efficiency again, be this waste wood crushed material of interpolation as much as possible in the raw mix of Wood cement board.
At this, in the present invention, for example once being crushed to granularity with hammer mill is below the 3mm, with roller mill this crushed material secondary being crushed to granularity then is below the 1mm, waits with screening at last that this secondary crushed material is classified into granularity is that the fine powder that the meal of 75 μ m (200 order)～1000 μ m (16 order) minces and granularity is lower than 75 μ m (200 order) minces.In order to improve the efficient that this waste wood is pulverized, comparatively desirable with the waste wood of the Wood cement board of selecting to contain wood pulp or the such fine wood substance component of wood powder as waste wood.
It is broken because be difficult for fine powder to be contained in the wood substance component in this waste wood, so the content in coarse reduction is many, and inorganic components is because easily fine powder is broken, so only contain more a spot of wood substance component in fine powder minces.
Pulverize as carry out secondary with roller mill, outside the unhardened part of cement is exposed in meal minces, and the wood substance component fibrosis of this meal in mincing.Thereby this meal minces and just might participate in sclerous reaction together with cement, and has reinforced effects, so can save the addition that is added on the wood pulp in this part raw mix.
Thereby as described below, waste wood crushed material of the present invention can be more than the 20 quality % in the interpolation combined amount in the raw mix of extrusion-molded woody cement plates.
In extrusion-molded woody cement plates of the present invention, also can add water-absorbing polymer again, water-soluble polymers such as carboxy methyl cellulose, methylcellulose gum, methoxyl group Mierocrystalline cellulose, ethoxy cellulose, alginate, polyacrylic ester, the plastic foam material crushed material, the pre-frothing body of plastic foamed property bead, the complete foam of plastic foamed property bead, water-resisting agent, hydrophobizing agent, pigment, dyestuff etc.
General above-mentioned wood pulp is set in raw mix below the 10 quality %, and cement is set in about 50: 50～70: 30 with the mass ratio that contains the material of silicic acid.And the meal of Wood cement board waste wood crushed material minces and add 10～20 quality % in raw mix, and fine powder minces and add 10～25 quality % in raw mix, and described waste wood crushed material adds up to interpolation 20～45 quality %.
For making the Wood cement board lightweight comparatively desirable to add plastic foam material.This type of plastic foam material is as plastic foam material, particularly as the crushed material of plastic foam material waste, and the pre-frothing body of plastic foamed property bead, the complete foam of plastic foamed property bead waits and adds.As above-mentioned plastic foam material, for example have: foamed polystyrene body, foam polyethylene, polypropylene expanded body, phenol resins foam, melamine resin foam etc.
Plasticity when making extrusion molding improves, and improves the flowability of mixing thing to add water-soluble polymer, and adding water-absorbing polymer, to strengthen the water-retentivity of mixing thing comparatively desirable.
Add water when mixing in the above-mentioned raw materials mixture, for 100 mass parts raw mixs, the addition of water is generally 40～70 mass parts.
Above-mentioned mixing thing filling in forcing machine, and from this forcing machine the mouth mould extrude with tabular, extrusion pressure is set in the scope of 0.5～3MPa usually.Then under the heating and moistening state below 100 ℃ to after being extruded into above-mentioned tabular shaping thing and carrying out a slaking, carry out post cure with the high temperature and high pressure steam more than 100 ℃ again, and carry out suitable drying.
Below record and narrate embodiments of the invention.
Embodiment
It is below the 3mm that the extrusion molding woodboard waste wood that will contain wood pulp with hammer mill once is crushed to particle diameter, and then to be crushed to particle diameter with the roller mill secondary be below the 1mm, becomes meal to mince with sieve classification at last and fine powder minces.
Meal 75 μ m (200 order)～1000 μ m (16 order) that mince
Median size 80～100 μ m
Wood substance component 15～40 quality %
Inorganic components 60～85 quality %
Size-grade distribution
16～50 orders, 5～15 quality %
50～100 orders, 15～25 quality %
100～200 orders, 25～70 quality %
200～300 orders, 10～25 quality %
Fine powder minces and is lower than 75 μ m (200 order)
Median size 20～40 μ m
Wood substance component 10～20 quality %
Inorganic components 80～90 quality %
Size-grade distribution
50～200 orders, 10～20 quality %
200～300 orders, 20～40 quality %
Be lower than 330 orders, 40～70 quality %
Use above-mentioned waste wood meal to mince and fine powder minces and is modulated into the raw mix that cooperates as table 1.Make the comparative example 1 that does not contain Wood cement board waste wood crushed material as a comparative example again, addition is the following comparative examples 2 of 20 quality %, only adds the comparative example 3 that meal minces, and addition is the above comparative examples 4 of 45 quality %.
With the extrusion pressure is that 1MPa is to the mixing thing extrusion molding of above-mentioned raw materials, then under 60 ℃ the heating and moistening state to after being extruded into the slaking that body carries out 8 hours, again in autoclave, under 160 ℃, continue 5 hours post cure, use 120 ℃ dry a few hours of drying machine afterwards again, make extrusion-molded woody cement plates thus.The physical property measurement result of this Wood cement board is as shown in table 1.
[table 1]
| Cooperate | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | |
| Cement | 40 | 30 | 34 | 31 | 44.5 | 43 | 34 | 27 | |
| Silica sand | 25.5 | 23 | 24 | 21 | 44.5 | 32.5 | 25 | 19 | |
| The lightweight material | 10 | 10 | 10 | 1 | 1 | 10 | 1 | ||
| Wood pulp | 3.5 | 1 | 1 | 1 | 9 | 3.5 | 10 | 1 | |
| Tackifier | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| The Wood cement board waste wood | Meal minces | 10 | 10 | 20 | 20 | 5 | 30 | 23 | |
| Fine powder minces | 10 | 25 | 10 | 25 | 5 | 28 | |||
| Water | 60 | 62 | 60 | 63 | 61 | 60 | 65 | 61 | |
| Rerum natura | |||||||||
| Bending strength (N/mm 2) | 13.0 | 13.3 | 12.8 | 12.5 | 12.0 | 12.7 | 11.0 | 9.0 | |
| Proportion | 1.06 | 1.07 | 1.05 | 1.03 | 1.05 | 1.04 | 0.95 | 0.86 | |
| Frost resistance | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | △ | × | |
| Superficiality | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | × | × | |
| Dimensional stability | ◎ | ◎ | ◎ | ◎ | ◎ | ◎ | △ | × | |
As reference table 1, as seen embodiment 1,2,3,4 sample any and do not contain the sample of comparative example 1 of Wood cement board waste wood crushed material or the sample of comparative example 2 that contains the Wood cement board waste wood crushed material of 20 quality % following (10 quality %) has equal rerum natura.Can assert on the other hand, the sample and the embodiment 1,2,3 that only contain the comparative example 3 that meal minces, 4 sample and comparative example 1,2 sample is compared, and less and each rerum natura of its proportion, particularly superficiality reduce, and contains the sample and the embodiment 1 of the comparative example 4 of 45 quality % above (51 quality %), 2,3,4 sample is compared, and each rerum natura significantly reduces.
A kind of extrusion-molded woody cement plates of energy macro-mixing Wood cement board waste wood crushed material is provided in the present invention.
Claims (4)
1. extrusion-molded woody cement plates, it is by to cement, wood pulp, Wood cement board waste wood crushed material is that master's the raw mix and the mixing thing extrusion molding of water are made, it is that the fine powder that the meal of 75～1000 μ m minces and granularity is lower than 75 μ m minces that wherein said Wood cement board waste wood crushed material is classified into granularity, and setting makes that the interpolation combined amount that meal minces described in the described raw mix is 10～20 quality %, the interpolation combined amount that described fine powder minces is 10～25 quality %, and the total amount that described meal minces and described fine powder minces reaches 20～45 quality %.
2. extrusion-molded woody cement plates as claimed in claim 1, wherein said Wood cement board waste wood crushed material is the Wood cement board that is added with fine wood materials.
3. extrusion-molded woody cement plates as claimed in claim 1 or 2, it is below the 3mm that wherein said Wood cement board waste wood crushed material once is crushed to granularity by hammer mill, with roller mill a described crushed material secondary being crushed to granularity again is below the 1mm, then by the described secondary crushed material of classification, be divided into that described meal minces and described fine powder minces.
4. as the manufacture method of each described extrusion-molded woody cement plates in the claim 1～3, it is characterized in that, raw mix that cement, Wood cement board waste wood meal minces and water are mixing to be mixing thing once containing, add in described once mixing thing again that the Wood cement board fine powder minces and mixingly be the mixing thing of secondary, then to the mixing thing extrusion molding of described secondary, and make gained extrusion molding thing slaking sclerosis.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003074697A JP4235013B2 (en) | 2003-03-19 | 2003-03-19 | Extruded wood cement board and manufacturing method thereof |
| JP074697/2003 | 2003-03-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1970493A true CN1970493A (en) | 2007-05-30 |
| CN100500607C CN100500607C (en) | 2009-06-17 |
Family
ID=33290215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410030038XA Expired - Fee Related CN100500607C (en) | 2003-03-19 | 2004-03-18 | Extrusion-molded woody cement plate, and production method therefor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4235013B2 (en) |
| CN (1) | CN100500607C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731025A (en) * | 2011-04-14 | 2012-10-17 | 日吉华株式会社 | Inorganic plate and its manufacturing method |
| CN102731026A (en) * | 2011-04-14 | 2012-10-17 | 日吉华株式会社 | Inorganic plate and its manufacturing method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5006425B2 (en) * | 2010-03-31 | 2012-08-22 | ニチハ株式会社 | Wood cement board and manufacturing method thereof |
-
2003
- 2003-03-19 JP JP2003074697A patent/JP4235013B2/en not_active Expired - Fee Related
-
2004
- 2004-03-18 CN CNB200410030038XA patent/CN100500607C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102731025A (en) * | 2011-04-14 | 2012-10-17 | 日吉华株式会社 | Inorganic plate and its manufacturing method |
| CN102731026A (en) * | 2011-04-14 | 2012-10-17 | 日吉华株式会社 | Inorganic plate and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100500607C (en) | 2009-06-17 |
| JP2004277268A (en) | 2004-10-07 |
| JP4235013B2 (en) | 2009-03-04 |
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Granted publication date: 20090617 Termination date: 20170318 |