CN109626952A - A kind of water plant fibrous plate - Google Patents
A kind of water plant fibrous plate Download PDFInfo
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- CN109626952A CN109626952A CN201910153701.1A CN201910153701A CN109626952A CN 109626952 A CN109626952 A CN 109626952A CN 201910153701 A CN201910153701 A CN 201910153701A CN 109626952 A CN109626952 A CN 109626952A
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- plant
- blender
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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
- C04B28/34—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 cold phosphate binders
- C04B28/344—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 cold phosphate binders the phosphate binder being present in the starting composition solely as one or more phosphates
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0071—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability making use of a rise in pressure
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0082—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability making use of a rise in temperature, e.g. caused by an exothermic reaction
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a kind of water plant fibrous plates, including the mixing bed of material and plant fiber layer, plant fiber layer is laid in the mixing bed of material by layer, the mixing bed of material is made of magnesium phosphate cement, dead burned magnesia, adhesive, blender mixing, the present invention solves water hyacinth plant fiber and burns that particle is small can not to be collected and internal bond strength is inadequate, the problems such as being easily broken off, and by the way that magnesium phosphate cement, dead burned magnesia, adhesive, blender are mixed the composition mixing bed of material, it is laid with plant fiber layer between the layers.It is prepared using method of the invention the result shows that: the formaldehydeless discharge of the plate, bending strength are 2 times or so of common medium-density plate material, and internal bond strength reaches as high as its about 3 times, and furthermore the plate also has fabulous fire prevention, waterproof performance.
Description
Technical field
The present invention relates to vegetable fibre board manufacture technology field, specially a kind of water plant fibrous plate.
Background technique
In recent years, the mass propagation of China's most area water hyacinth is that lake treatment brings great difficulty, only yellow
For Pujiang basin, the average daily quality of water hyacinth for spreading unchecked phase salvaging is 500-2000 tons or so, and the phase of spreading unchecked salvages accumulative more than 5
Ten thousand tons.The water hyacinth salvaged is constantly accumulated due to that can not utilize, become a kind of novel solid waste and at waiting
Reason.Simultaneously as water hyacinth is different from traditional plant fiber, fiber finer, moisture content height, wadding fibrous delicacy, using powder
Broken machine forms the lesser shot-like particle of particle after crushing, and can not collect and utilize, it is caused to make the mechanical property and resistance to compression of plate
Performance is poor, and intensity is difficult to reach mechanics standard required for plate is formed.It actually appears static bending strength deficiency and causes plate
Material fracture, is not achieved satisfied using effect.And the contact area that the plant fiber and adhesive of crushing is not added is inadequate, directly
Influence the internal bond strength of plate.Thus, cost can not only be saved and can by preparing high-intensitive water hyacinth fibre plate
It is influenced so that water hyacinth is effectively reduced for lake ecological environment.
In addition, the phosphate cement that people use at present belongs to chemical bonding cement, i.e., using metal and salt as basic component
It is formed by chemical reaction, can be used to be made a variety of heat-resisting and stabilizing materials and anti-corrosion and electrically-insulating paint and efficiently
Energy glue etc..Its certain performance is similar to ceramic material, with good stability under high-temp and high-strength pressure.Its main component
It matches to be formed in proportion for magnesia, phosphate, retarder and a variety of ores.In structural material field, phosphate cement can be with
In conjunction with earth materials, as lime stone, sandstone or even traditional cement concrete have stronger adhesiveness, and be not in
Polymerized organics inflammable and the shortcomings that issue toxic gas, can help to the durability for improving plant fiber.In addition, magnesium phosphate
Cement wearability and frost resistance are good, and cubic deformation is small, have fabulous stability after aquation, air shrinkage value is only normal silicate
1/10 or so of cement.Meanwhile will appear a large amount of MgO particle in configuration process, itself has fabulous wearability, largely
Unhydrated MgO particle can play the role of wear-resisting fine aggregate, so that practical phosphate cement can increase substantially plant fibre
The wearability of Wiki material.
Third there is now a large amount of stalk plant fiber plate example for reference.Stalk plant fiber plate low cost,
Source of drawing material it is extensive.However it is unfavorable for glued substance since stalk surface majority has, thus use traditional Lauxite
Or phenolic resin glue, it is difficult to obtain satisfied bonding strength.Up to the present, both at home and abroad built flakeboard factory nearly all with
Isocyanic acid is extremely adhesive, and price is 8-10 times of Lauxite, and absolute cost is high；Followed by haftplatte problem, such as directlys adopt
Isocyanate adhesive, it will generate serious haftplatte phenomenon in hot pressing, reduce product service life.
Summary of the invention
The purpose of the present invention is to provide a kind of water plant fibrous plates, to solve mentioned above in the background art ask
Topic.
To achieve the above object, the invention provides the following technical scheme: a kind of water plant fibrous plate, including mixture
Layer and plant fiber layer, the plant fiber layer are laid in the mixing bed of material by layer, and the mixing bed of material component is in parts by weight
Including 100-200 parts of magnesium phosphate cement, 30-60 parts of dead burned magnesia, 10-20 parts of adhesive, 4-10 parts of blender, sodium metasilicate
10-20 parts, 30-40 parts of water.
Preferably, the adhesive is made of the resulting ashes of low temperature calcination dolomite.
Preferably, the blender uses water-soluble magnesium salt.
Preferably, the plant fiber layer uses water hyacinth fibre.
Preferably, preparation method includes the following steps:
A, water hyacinth fibre is solidified as curing agent using sodium metasilicate and modified magnesium-cement first, to guarantee to enhance
Its static bending strength improves sheet mechanical property and requires to enhance its internal bond strength in bonding；
B, magnesium phosphate cement, sodium metasilicate, water are successively poured into stirring container, water is added to stir rapidly；
C, infusion method is then used, the water hyacinth of drying is immersed in solidify liquid, is dehydrated and takes after standing 30-60 minutes
Out；
D, the water hyacinth after having fully absorbed the same drying of curing agent, which is put into blender, to be stirred, and adds adhesive and tune
And agent, it is poured into mold again after mixing well it, often topples over mixed once material, one layer of plant fibre is toppled on the mixture
Dimension；
E, the material being sufficiently mixed is put into a press, is warming up to 50 DEG C of progress hot pressing, production can be obtained in this way
This water plant fibrous plate.
Compared with prior art, easy to operate the beneficial effects of the present invention are: production method of the present invention is simple, it is fabricated to
Timber intensity it is high and formaldehydeless, it is durable.The present invention has intensity high, and low in cost, source of drawing material is wide, not damage to land
The advantages that resource, is also with good stability simultaneously；The present invention solves water hyacinth plant fiber and burns that particle is small to collect
And internal bond strength is inadequate, the problems such as being easily broken off, and by mixing magnesium phosphate cement, dead burned magnesia, adhesive, blender
It is combined into the mixing bed of material, is laid with plant fiber layer between the layers.It is prepared using method of the invention the result shows that:
The formaldehydeless discharge of the plate, bending strength are 2 times or so of common medium-density plate material, and internal bond strength reaches as high as it
About 3 times, furthermore the plate also has fabulous fire prevention, waterproof performance.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment one:
The invention provides the following technical scheme: a kind of water plant fibrous plate, including the mixing bed of material and plant fiber layer,
The plant fiber layer is laid in the mixing bed of material by layer, and the mixing bed of material component includes magnesium phosphate cement in parts by weight
100 parts, 30 parts of dead burned magnesia, 10 parts of adhesive, 4 parts of blender, 10 parts of sodium metasilicate, 30 parts of water.
In the present embodiment, adhesive is made of the resulting ashes of low temperature calcination dolomite.
In the present embodiment, blender uses water-soluble magnesium salt.
In the present embodiment, plant fiber layer uses water hyacinth fibre.
The preparation method of the present embodiment the following steps are included:
A, water hyacinth fibre is solidified as curing agent using sodium metasilicate and modified magnesium-cement first, to guarantee to enhance
Its static bending strength improves sheet mechanical property and requires to enhance its internal bond strength in bonding；
B, magnesium phosphate cement, sodium metasilicate, water are successively poured into stirring container, water is added to stir rapidly；
C, infusion method is then used, the water hyacinth of drying is immersed in solidify liquid, is dehydrated and takes out after standing 30 minutes；
D, the water hyacinth after having fully absorbed the same drying of curing agent, which is put into blender, to be stirred, and adds adhesive and tune
And agent, it is poured into mold again after mixing well it, often topples over mixed once material, one layer of plant fibre is toppled on the mixture
Dimension；
E, the material being sufficiently mixed is put into a press, is warming up to 50 DEG C of progress hot pressing, production can be obtained in this way
This water plant fibrous plate.
Embodiment two:
A kind of water plant fibrous plate, including the mixing bed of material and plant fiber layer, the plant fiber layer are laid with by layer
In the mixing bed of material, the mixing bed of material component includes 200 parts of magnesium phosphate cement, 60 parts of dead burned magnesia, glue in parts by weight
20 parts of mixture, 10 parts of blender, 20 parts of sodium metasilicate, 40 parts of water.
In the present embodiment, adhesive is made of the resulting ashes of low temperature calcination dolomite.
In the present embodiment, blender uses water-soluble magnesium salt.
In the present embodiment, plant fiber layer uses water hyacinth fibre.
The preparation method of the present embodiment the following steps are included:
A, water hyacinth fibre is solidified as curing agent using sodium metasilicate and modified magnesium-cement first, to guarantee to enhance
Its static bending strength improves sheet mechanical property and requires to enhance its internal bond strength in bonding；
B, magnesium phosphate cement, sodium metasilicate, water are successively poured into stirring container, water is added to stir rapidly；
C, infusion method is then used, the water hyacinth of drying is immersed in solidify liquid, dehydration after sixty minutes is stood and takes out；
D, the water hyacinth after having fully absorbed the same drying of curing agent, which is put into blender, to be stirred, and adds adhesive and tune
And agent, it is poured into mold again after mixing well it, often topples over mixed once material, one layer of plant fibre is toppled on the mixture
Dimension；
E, the material being sufficiently mixed is put into a press, is warming up to 50 DEG C of progress hot pressing, production can be obtained in this way
This water plant fibrous plate.
Embodiment three:
A kind of water plant fibrous plate, including the mixing bed of material and plant fiber layer, the plant fiber layer are laid with by layer
In the mixing bed of material, the mixing bed of material component includes 140 parts of magnesium phosphate cement, 40 parts of dead burned magnesia, glue in parts by weight
12 parts of mixture, 5 parts of blender, 12 parts of sodium metasilicate, 32 parts of water.
In the present embodiment, adhesive is made of the resulting ashes of low temperature calcination dolomite.
In the present embodiment, blender uses water-soluble magnesium salt.
In the present embodiment, plant fiber layer uses water hyacinth fibre.
The preparation method of the present embodiment the following steps are included:
A, water hyacinth fibre is solidified as curing agent using sodium metasilicate and modified magnesium-cement first, to guarantee to enhance
Its static bending strength improves sheet mechanical property and requires to enhance its internal bond strength in bonding；
B, magnesium phosphate cement, sodium metasilicate, water are successively poured into stirring container, water is added to stir rapidly；
C, infusion method is then used, the water hyacinth of drying is immersed in solidify liquid, dehydration after forty minutes is stood and takes out；
D, the water hyacinth after having fully absorbed the same drying of curing agent, which is put into blender, to be stirred, and adds adhesive and tune
And agent, it is poured into mold again after mixing well it, often topples over mixed once material, one layer of plant fibre is toppled on the mixture
Dimension；
E, the material being sufficiently mixed is put into a press, is warming up to 50 DEG C of progress hot pressing, production can be obtained in this way
This water plant fibrous plate.
Example IV:
A kind of water plant fibrous plate, including the mixing bed of material and plant fiber layer, the plant fiber layer are laid with by layer
In the mixing bed of material, the mixing bed of material component includes 150 parts of magnesium phosphate cement, 45 parts of dead burned magnesia, glue in parts by weight
15 parts of mixture, 7 parts of blender, 15 parts of sodium metasilicate, 35 parts of water.
In the present embodiment, adhesive is made of the resulting ashes of low temperature calcination dolomite.
In the present embodiment, blender uses water-soluble magnesium salt.
In the present embodiment, plant fiber layer uses water hyacinth fibre.
The preparation method of the present embodiment the following steps are included:
A, water hyacinth fibre is solidified as curing agent using sodium metasilicate and modified magnesium-cement first, to guarantee to enhance
Its static bending strength improves sheet mechanical property and requires to enhance its internal bond strength in bonding；
B, magnesium phosphate cement, sodium metasilicate, water are successively poured into stirring container, water is added to stir rapidly；
C, infusion method is then used, the water hyacinth of drying is immersed in solidify liquid, is dehydrated and takes out after standing 45 minutes；
D, the water hyacinth after having fully absorbed the same drying of curing agent, which is put into blender, to be stirred, and adds adhesive and tune
And agent, it is poured into mold again after mixing well it, often topples over mixed once material, one layer of plant fibre is toppled on the mixture
Dimension；
E, the material being sufficiently mixed is put into a press, is warming up to 50 DEG C of progress hot pressing, production can be obtained in this way
This water plant fibrous plate.
Experimental example:
Using technical solution of the present invention to respectively it is obtained having a size of 500 × 500 × 7 multi-layer board and Φ 15mm ×
The fire-proof plate of 50mm tests its static bending strength, water sucting thickness expansion according to GB/T 17657-1999 and GB8624-2012 respectively
Rate, moisture content, burst size of methanal, bonding strength and combustibility obtain data and are as follows:
Production method of the present invention is simple, easy to operate, and the timber intensity being fabricated to is high and formaldehydeless, durable.This hair
Bright to have intensity high, low in cost, source of drawing material is wide, also not with good stability simultaneously the advantages that destroyed land resource；
The present invention solves water hyacinth plant fiber and burns that particle is small can not to be collected and internal bond strength is inadequate, the problems such as being easily broken off,
And by the way that magnesium phosphate cement, dead burned magnesia, adhesive, blender are mixed the composition mixing bed of material, it is laid between the layers
Plant fiber layer.It is prepared using method of the invention the result shows that: the formaldehydeless discharge of the plate, bending strength
It is 2 times or so of common medium-density plate material, internal bond strength reaches as high as its about 3 times, and furthermore the plate also has fabulous anti-
Fire, waterproof performance.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (5)
1. a kind of water plant fibrous plate, it is characterised in that: including the mixing bed of material and plant fiber layer, the plant fiber layer
It is laid in the mixing bed of material by layer, the mixing bed of material component includes 100-200 parts of magnesium phosphate cement, reheating oxygen in parts by weight
Change magnesium 30-60 parts, 10-20 parts of adhesive, 4-10 parts of blender, 10-20 parts of sodium metasilicate, 30-40 parts of water.
2. a kind of water plant fibrous plate according to claim 1, it is characterised in that: the adhesive is by low temperature calcination
The resulting ashes of dolomite is made.
3. a kind of water plant fibrous plate according to claim 1, it is characterised in that: the blender is using water-soluble
Magnesium salts.
4. a kind of water plant fibrous plate according to claim 1, it is characterised in that: the plant fiber layer uses water
Cucurbit fiber.
5. realizing a kind of preparation method of water plant fibrous plate described in claim 1, it is characterised in that: preparation method
The following steps are included:
A, water hyacinth fibre is solidified as curing agent using sodium metasilicate and modified magnesium-cement first, to guarantee enhancing, its is quiet
Qu Qiangdu improves sheet mechanical property and requires to enhance its internal bond strength in bonding；
B, magnesium phosphate cement, sodium metasilicate, water are successively poured into stirring container, water is added to stir rapidly；
C, infusion method is then used, the water hyacinth of drying is immersed in solidify liquid, is dehydrated and takes out after standing 30-60 minutes；
D, the water hyacinth after having fully absorbed the same drying of curing agent, which is put into blender, to be stirred, and adds adhesive and reconciliation
Agent is poured into mold again after mixing well it, often topples over mixed once material, and one layer of plant fiber is toppled on the mixture；
E, the material being sufficiently mixed is put into a press, is warming up to 50 DEG C of progress hot pressing, can be obtained make this water in this way
Raw vegetable fibre plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153701.1A CN109626952A (en) | 2019-03-01 | 2019-03-01 | A kind of water plant fibrous plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910153701.1A CN109626952A (en) | 2019-03-01 | 2019-03-01 | A kind of water plant fibrous plate |
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| CN109626952A true CN109626952A (en) | 2019-04-16 |
Family
ID=66066172
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|---|---|---|---|---|
| JPS6077182A (en) * | 1983-10-05 | 1985-05-01 | 川崎炉材株式会社 | Lightweight refractory heat-insulating block |
| CN1436646A (en) * | 2003-03-18 | 2003-08-20 | 刘光良 | Artificial fiber board of common water rathathinth and its making process |
| CN102011444A (en) * | 2010-11-15 | 2011-04-13 | 易科美德（天津）环保建材有限公司 | High-strength wood-like low-carbon base plate and preparation method thereof |
| CN102786285A (en) * | 2012-01-19 | 2012-11-21 | 南京航空航天大学 | Sulfur and phosphate cement insulation mortar or insulation board |
| CN103481567A (en) * | 2013-10-10 | 2014-01-01 | 林燕兵 | Biomass polymer hybrid laminated composite material and preparation method |
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| BR102019001638A2 (en) * | 2019-01-28 | 2020-08-11 | Uenf Universidade Estadual Do Norte Fluminense Darcy Ribeiro | RED CERAMIC PASTA WITH AQUATIC MACROPHYTE BIOMASS INCORPORATION |
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| JPS6077182A (en) * | 1983-10-05 | 1985-05-01 | 川崎炉材株式会社 | Lightweight refractory heat-insulating block |
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| CN105418050A (en) * | 2015-11-02 | 2016-03-23 | 卓达新材料科技集团有限公司 | Magnesium phosphate floor bearing plate for buildings and preparation method for magnesium phosphate floor bearing plate |
| CN109024942A (en) * | 2018-08-02 | 2018-12-18 | 天津市建筑材料科学研究院有限公司 | A kind of straw board multilayer filled composite fire-retardant heat insulation plate |
| BR102019001638A2 (en) * | 2019-01-28 | 2020-08-11 | Uenf Universidade Estadual Do Norte Fluminense Darcy Ribeiro | RED CERAMIC PASTA WITH AQUATIC MACROPHYTE BIOMASS INCORPORATION |
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| Title |
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| 刘福胜: "《混凝土夹心秸秆砌块抗震节能生态宜居村镇建筑》", 30 April 2018, 中国建材工业出版社 * |
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Application publication date: 20190416 |