CN107311549A - A kind of processing technology decorated with plasticity composite - Google Patents
A kind of processing technology decorated with plasticity composite Download PDFInfo
- Publication number
- CN107311549A CN107311549A CN201710468119.5A CN201710468119A CN107311549A CN 107311549 A CN107311549 A CN 107311549A CN 201710468119 A CN201710468119 A CN 201710468119A CN 107311549 A CN107311549 A CN 107311549A
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- Prior art keywords
- standby
- processing
- corn stalk
- mixed
- processing technology
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Classifications
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/023—Chemical treatment
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
-
- 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
-
- 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
Abstract
The invention discloses a kind of processing technology of decoration with plasticity composite, comprise the following steps：（1）Raw material selection preparation,（2）Raw material mixed processing,（3）Pressing mold is molded.The present invention has carried out rational improvement to the processing technology of plasticity composite, enhances the compatible associativity between material composition, the characteristics such as the consistency, intensity, rotproofness of finished product are finally improved well, use value is higher, better economic benefit.
Description
Technical field
The invention belongs to building decoration art work field, and in particular to a kind of processing of decoration plasticity composite
Technique.
Background technology
Various sheet materials, such as plasterboard, cement plate, stone plate, wood plank can be used in existing home decoration, it makes
Each has something to recommend him with characteristic, its certain shortcoming is also evident from, and such as panel strength is low, is easily damaged；Cement plate weight is big, surface
It is coarse of low grade；Stone plate quality is hard, processes transport difficult；Wood plank weatherability is poor, a large amount of to use the guarantor for being unfavorable for environment
Shield.Substantial amounts of crop material waste material can be produced in agricultural planting, people are more before is recycled by way of burn and recycle in field,
But this mode is larger to the destructiveness of environment, and forbidden to use, the amount being used as in feed stripped is smaller, still can not be very
The Utilizing question of such waste material is solved well.This people is constantly explored and stalk waste material etc. is gradually used for the making of house ornamentation sheet material
In, such as Application No.：201510089075.6 disclosing a kind of plasticity composite, it is with corn stalk powder and straw silk
Primary raw material, make use of such discarded object well, be that good contribution has been made in the protection of environment.But used in actual processing
It is middle to find that intensity, anti-corrosive properties of sheet material that this raw material is made etc. still effectively reach the use requirement of people, it is necessary to further
Improvement processing.
The content of the invention
The purpose of the present invention is that there is provided a kind of processing work of decoration plasticity composite the problem of being directed to existing
Skill.
The present invention is achieved by the following technical solutions：
A kind of processing technology decorated with plasticity composite, comprises the following steps：
（1）It is prepared by raw material selection：
A. 80 mesh will be crossed after corn stalk powder drying and crushing standby；
B. its length is controlled to be not more than 1.5cm straw silk drying and crushing standby；
C. commercially available 325 mesh dry powder is chosen standby；
D. commercially available 425 mesh cement flour is chosen standby；
E. the sodium silicate solution that commercially available Baume degrees is 0.40 ~ 0.50 is chosen standby；
F. commercially available waterproofing agent of organosilicon is chosen standby；
（2）Raw material mixed processing：
A. by step（1）Described each raw material is weighed standby by following correspondence parts by weight：12 ~ 16 parts of corn stalk powder, straw silk 4
~ 8 parts, 2 ~ 5 parts of dry powder, 2 ~ 6 parts of cement flour, 8 ~ 12 parts of sodium silicate solution, 0.003 ~ 0.005 part of waterproofing agent of organosilicon；
B. the corn stalk powders that weigh of a and straw silk will be operated to be mixed, be then placed in immersion treatment 25 in enzymolysis liquid ~
30min, after the completion of filter out drying for standby；Each composition and its correspondence percentage by weight are in described enzymolysis liquid：Cellulase 0.3
~ 0.5%, hemicellulase 0.1 ~ 0.2%, pectase 0.03 ~ 0.06%, surplus is water；
C. the corn stalk powder after b processing and straw silk mixture will be operated to be put into radiation chamber and carry out at ultraviolet light irradiation
Corn stalk powder and straw silk mixture are taken out standby after reason, 40 ~ 50min；
D. the dry powder, cement flour, sodium silicate solution and the waterproofing agent of organosilicon that operate a to weigh are mixed jointly, is then incorporated it
The clear water that 1 ~ 1.5 times of gross mass, stir to obtain mixed liquor A, then adds into mixed liquor A the silane of its gross mass 0.4 ~ 0.7%
Coupling agent, stir mixed liquid B is standby；
E. the corn stalk powder after c processing and straw silk mixture will be operated to put into immediately in the mixed liquid B obtained by operation d,
Heating keeps the temperature of mixed liquid B to be 65 ~ 70 DEG C, and it is standby to obtain slurries C after 3 ~ 4min of high-speed stirred processing；After treatment with ultraviolet light
Corn stalk powder and straw silk mixture put into immediately in mixed liquid B, prevent under overlong time treatment with ultraviolet light effect
Drop, the temperature that mixed liquid B is kept in immersion treatment is 65 ~ 70 DEG C, equally ensure that corn stalk powder and straw silk, Yi Jishuan
Fly the enhancing of the active maximization, more conducively end properties of powder, cement flour etc.；
（3）Pressing mold is molded：
A. by step（2）Final obtained slurries C is taken out, and processing is thermally dried to it, its quality is concentrated into original
Pureed mixture D is obtained after half standby；
B. the pureed mixture D obtained by a will be operated to put into mould to carry out after heated die, demoulding cooling treatment.
Further, step（2）Heating keeps the temperature of enzymolysis liquid to be 35 when operating the enzymolysis liquid immersion treatment described in b
~40℃。
Further, step（2）Operate the entirety of corn stalk powder and straw silk mixture after the drying process described in b
Water content is 30 ~ 35%.
Further, step（2）Wavelength control when operating the ultraviolet light irradiation processing described in c is 270 ~ 280nm, spoke
According to power be 500 ~ 600W.
Further, step（2）It is silane coupler kh550, silane coupler to operate the silane coupler described in d
Any one in kh560, silane coupler kh570.
Further, step（2）High-speed stirred described in operation e controls the speed of stirring to be 800 ~ 1000 when handling
Rev/min.
It is directly to be mixed each raw material mostly in the existing pressing mold manufacture processing for raw materials such as stalk, wood powders,
Then pressing mold manufacture is carried out to the mixture of gained, is eventually fabricated finished product, this mode mainly by HTHP by raw material into
Divide and pressed, the contact interface observation finds the compositions such as stalk and remaining composition is carried out its internal organizational structure
Gap is still suffered from, the bond strength at interface is not high, and then overall mechanical characteristic can be caused on the weak side, corrosion resistant water resistance declines etc.
Problem.Rational adjustment is carried out to the technique of working process to this present invention to improve, the surface of corn stalk powder and straw silk
Activity is relatively poor, both is immersed in enzymolysis liquid handled before processing, its surface is digested using a variety of enzymes,
Substantial amounts of small lines is etched, contact surface area is added, is easy to follow-up working process to operate, purple is carried out to it again afterwards
Outer light irradiation processing, wherein appropriate ultraviolet luminous energy effectively lifts the surface-active of corn stalk powder and straw silk, is improved
Its surface active groups content, beneficial to its combination mutually and between remaining composition, the silane added afterwards in mixed liquid B
Coupling agent can effectively improve the surface characteristic of the inorganic raw materials such as dry powder, cement flour, improve itself and corn stalk powder and rice
The compatible associativity of grass fiber, finally effectively improves overall characteristic.
The present invention has advantages below compared with prior art：
The present invention has carried out rational improvement to the processing technology of plasticity composite, enhances the compatible knot between material composition
Close property, the characteristics such as the consistency, intensity, rotproofness of finished product are finally improved well, use value is higher, economic benefit compared with
It is good.
Embodiment
Embodiment 1
A kind of processing technology decorated with plasticity composite, comprises the following steps：
（1）It is prepared by raw material selection：
A. 80 mesh will be crossed after corn stalk powder drying and crushing standby；
B. its length is controlled to be not more than 1.5cm straw silk drying and crushing standby；
C. commercially available 325 mesh dry powder is chosen standby；
D. commercially available 425 mesh cement flour is chosen standby；
E. the sodium silicate solution that commercially available Baume degrees is 0.40 ~ 0.50 is chosen standby；
F. commercially available waterproofing agent of organosilicon is chosen standby；
（2）Raw material mixed processing：
A. by step（1）Described each raw material is weighed standby by following correspondence parts by weight：12 parts of corn stalk powder, straw silk 4 parts,
2 parts of dry powder, 2 parts of cement flour, 8 parts of sodium silicate solution, 0.003 part of waterproofing agent of organosilicon；
B. the operation a corn stalk powders weighed and straw silk are mixed, are then placed in immersion treatment 25min in enzymolysis liquid,
After the completion of filter out drying for standby；Each composition and its correspondence percentage by weight are in described enzymolysis liquid：Cellulase 0.3%, half fibre
The plain enzyme 0.1% of dimension, pectase 0.03%, surplus is water；
C. the corn stalk powder after b processing and straw silk mixture will be operated to be put into radiation chamber and carry out at ultraviolet light irradiation
Corn stalk powder and straw silk mixture are taken out standby after reason, 40min；
D. the dry powder, cement flour, sodium silicate solution and the waterproofing agent of organosilicon that operate a to weigh are mixed jointly, is then incorporated it
The clear water that 1 times of gross mass, stir to obtain mixed liquor A, then adds into mixed liquor A the silane coupler of its gross mass 0.4%,
Stir mixed liquid B is standby；
E. the corn stalk powder after c processing and straw silk mixture will be operated to put into immediately in the mixed liquid B obtained by operation d,
Heating keeps the temperature of mixed liquid B to be 65 DEG C, and it is standby to obtain slurries C after high-speed stirred processing 3min；
（3）Pressing mold is molded：
A. by step（2）Final obtained slurries C is taken out, and processing is thermally dried to it, its quality is concentrated into original
Pureed mixture D is obtained after half standby；
B. the pureed mixture D obtained by a will be operated to put into mould to carry out after heated die, demoulding cooling treatment.
Further, step（2）Heating keeps the temperature of enzymolysis liquid to be 35 when operating the enzymolysis liquid immersion treatment described in b
℃。
Further, step（2）Operate the entirety of corn stalk powder and straw silk mixture after the drying process described in b
Water content is 30%.
Further, step（2）Wavelength control when operating the ultraviolet light irradiation processing described in c is 270nm, irradiation
Power is 500W.
Further, step（2）It is silane coupler kh550 to operate the silane coupler described in d.
Further, step（2）High-speed stirred described in operation e controls the speed of stirring to be 800 revs/min when handling.
Embodiment 2
A kind of processing technology decorated with plasticity composite, comprises the following steps：
（1）It is prepared by raw material selection：
A. 80 mesh will be crossed after corn stalk powder drying and crushing standby；
B. its length is controlled to be not more than 1.5cm straw silk drying and crushing standby；
C. commercially available 325 mesh dry powder is chosen standby；
D. commercially available 425 mesh cement flour is chosen standby；
E. the sodium silicate solution that commercially available Baume degrees is 0.40 ~ 0.50 is chosen standby；
F. commercially available waterproofing agent of organosilicon is chosen standby；
（2）Raw material mixed processing：
A. by step（1）Described each raw material is weighed standby by following correspondence parts by weight：16 parts of corn stalk powder, straw silk 8 parts,
5 parts of dry powder, 6 parts of cement flour, 12 parts of sodium silicate solution, 0.005 part of waterproofing agent of organosilicon；
B. the operation a corn stalk powders weighed and straw silk are mixed, are then placed in immersion treatment 30min in enzymolysis liquid,
After the completion of filter out drying for standby；Each composition and its correspondence percentage by weight are in described enzymolysis liquid：Cellulase 0.5%, half fibre
The plain enzyme 0.2% of dimension, pectase 0.06%, surplus is water；
C. the corn stalk powder after b processing and straw silk mixture will be operated to be put into radiation chamber and carry out at ultraviolet light irradiation
Corn stalk powder and straw silk mixture are taken out standby after reason, 50min；
D. the dry powder, cement flour, sodium silicate solution and the waterproofing agent of organosilicon that operate a to weigh are mixed jointly, is then incorporated it
The clear water that 1.5 times of gross mass, stir to obtain mixed liquor A, then adds into mixed liquor A the silane coupled of its gross mass 0.7%
Agent, stir mixed liquid B is standby；
E. the corn stalk powder after c processing and straw silk mixture will be operated to put into immediately in the mixed liquid B obtained by operation d,
Heating keeps the temperature of mixed liquid B to be 70 DEG C, and it is standby to obtain slurries C after high-speed stirred processing 4min；
（3）Pressing mold is molded：
A. by step（2）Final obtained slurries C is taken out, and processing is thermally dried to it, its quality is concentrated into original
Pureed mixture D is obtained after half standby；
B. the pureed mixture D obtained by a will be operated to put into mould to carry out after heated die, demoulding cooling treatment.
Further, step（2）Heating keeps the temperature of enzymolysis liquid to be 40 when operating the enzymolysis liquid immersion treatment described in b
℃。
Further, step（2）Operate the entirety of corn stalk powder and straw silk mixture after the drying process described in b
Water content is 35%.
Further, step（2）Wavelength control when operating the ultraviolet light irradiation processing described in c is 280nm, irradiation
Power is 600W.
Further, step（2）It is silane coupler kh570 to operate the silane coupler described in d.
Further, step（2）High-speed stirred described in operation e controls the speed of stirring to be 1000 revs/min when handling.
Comparative example 1
This comparative example 1 compared with Example 1, saves step（2）Operation b processing in raw material mixed processing, in addition
Method and step all same.
Comparative example 2
This comparative example 2 compared with Example 1, saves step（2）Operation c processing in raw material mixed processing, in addition
Method and step all same.
Comparative example 3
This comparative example 3 compared with Example 1, in step（2）In operation d in raw material mixed processing, whereabouts mixed liquor A is saved
The middle processing operation for adding silane coupler, method and step all same in addition.
Comparative example 4
This comparative example 4 compared with Example 1, in step（2）In operation e in raw material mixed processing, by the temperature of mixed liquid B
Degree is promoted to 80 DEG C, method and step all same in addition.
Comparative example 5
This comparative example 5 compared with Example 1, saves step（2）Operation b and operation c processing in raw material mixed processing, together
When save operation d in into mixed liquor A add silane coupler processing operation, method and step all same in addition.
In order to contrast effect of the present invention, to above-described embodiment 1, comparative example 1, comparative example 2, comparative example 3,
The obtained finished product sample of method correspondence described in comparative example 4, comparative example 5（Specification is processed into for long 80mm, width
20mm, high 10mm sample）Performance test is carried out, specific correction data is as shown in table 1 below：
Table 1
| Bending strength（MPa） | Impact strength（kJ/m2） | |
| Embodiment 1 | 21.8 | 12.6 |
| Comparative example 1 | 17.8 | 9.5 |
| Comparative example 2 | 17.3 | 9.2 |
| Comparative example 3 | 19.4 | 10.6 |
| Comparative example 4 | 20.0 | 11.2 |
| Comparative example 5 | 15.4 | 8.0 |
Note：Bending strength described in upper table 1 is tested with reference to GB/T 9314-1998, and described impact strength is with reference to GB/
T1043-93 is tested.
Processing method of the present invention can effectively lift the mechanical characteristic of finished-product material, performance it can be seen from upper table 1
Preferably.
Claims (6)
1. a kind of processing technology decorated with plasticity composite, it is characterised in that comprise the following steps：
（1）It is prepared by raw material selection：
A. 80 mesh will be crossed after corn stalk powder drying and crushing standby；
B. its length is controlled to be not more than 1.5cm straw silk drying and crushing standby；
C. commercially available 325 mesh dry powder is chosen standby；
D. commercially available 425 mesh cement flour is chosen standby；
E. the sodium silicate solution that commercially available Baume degrees is 0.40 ~ 0.50 is chosen standby；
F. commercially available waterproofing agent of organosilicon is chosen standby；
（2）Raw material mixed processing：
A. by step（1）Described each raw material is weighed standby by following correspondence parts by weight：12 ~ 16 parts of corn stalk powder, straw silk 4
~ 8 parts, 2 ~ 5 parts of dry powder, 2 ~ 6 parts of cement flour, 8 ~ 12 parts of sodium silicate solution, 0.003 ~ 0.005 part of waterproofing agent of organosilicon；
B. the corn stalk powders that weigh of a and straw silk will be operated to be mixed, be then placed in immersion treatment 25 in enzymolysis liquid ~
30min, after the completion of filter out drying for standby；Each composition and its correspondence percentage by weight are in described enzymolysis liquid：Cellulase 0.3
~ 0.5%, hemicellulase 0.1 ~ 0.2%, pectase 0.03 ~ 0.06%, surplus is water；
C. the corn stalk powder after b processing and straw silk mixture will be operated to be put into radiation chamber and carry out at ultraviolet light irradiation
Corn stalk powder and straw silk mixture are taken out standby after reason, 40 ~ 50min；
D. the dry powder, cement flour, sodium silicate solution and the waterproofing agent of organosilicon that operate a to weigh are mixed jointly, is then incorporated it
The clear water that 1 ~ 1.5 times of gross mass, stir to obtain mixed liquor A, then adds into mixed liquor A the silane of its gross mass 0.4 ~ 0.7%
Coupling agent, stir mixed liquid B is standby；
E. the corn stalk powder after c processing and straw silk mixture will be operated to put into immediately in the mixed liquid B obtained by operation d,
Heating keeps the temperature of mixed liquid B to be 65 ~ 70 DEG C, and it is standby to obtain slurries C after 3 ~ 4min of high-speed stirred processing；
（3）Pressing mold is molded：
A. by step（2）Final obtained slurries C is taken out, and processing is thermally dried to it, its quality is concentrated into original
Pureed mixture D is obtained after half standby；
B. the pureed mixture D obtained by a will be operated to put into mould to carry out after heated die, demoulding cooling treatment.
2. a kind of processing technology decorated with plasticity composite according to claim 1, it is characterised in that step
（2）Heating keeps the temperature of enzymolysis liquid to be 35 ~ 40 DEG C when operating the enzymolysis liquid immersion treatment described in b.
3. a kind of processing technology decorated with plasticity composite according to claim 1, it is characterised in that step
（2）The overall water content for operating corn stalk powder and straw silk mixture after the drying process described in b is 30 ~ 35%.
4. a kind of processing technology decorated with plasticity composite according to claim 1, it is characterised in that step
（2）It is 270 ~ 280nm to operate the wavelength control during ultraviolet light irradiation processing described in c, and the power of irradiation is 500 ~ 600W.
5. a kind of processing technology decorated with plasticity composite according to claim 1, it is characterised in that step
（2）The silane coupler described in d is operated in silane coupler kh550, silane coupler kh560, silane coupler kh570
Any one.
6. a kind of processing technology decorated with plasticity composite according to claim 1, it is characterised in that step
（2）High-speed stirred described in operation e controls the speed of stirring to be 800 ~ 1000 revs/min when handling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710468119.5A CN107311549A (en) | 2017-06-20 | 2017-06-20 | A kind of processing technology decorated with plasticity composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710468119.5A CN107311549A (en) | 2017-06-20 | 2017-06-20 | A kind of processing technology decorated with plasticity composite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107311549A true CN107311549A (en) | 2017-11-03 |
Family
ID=60181932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710468119.5A Pending CN107311549A (en) | 2017-06-20 | 2017-06-20 | A kind of processing technology decorated with plasticity composite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107311549A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003112955A (en) * | 2001-09-28 | 2003-04-18 | Aisawa Construction Co Ltd | Concrete reinforcing material and method for manufacturing the same |
| CN104649646A (en) * | 2015-02-27 | 2015-05-27 | 赵广清 | Plastic composite material |
-
2017
- 2017-06-20 CN CN201710468119.5A patent/CN107311549A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003112955A (en) * | 2001-09-28 | 2003-04-18 | Aisawa Construction Co Ltd | Concrete reinforcing material and method for manufacturing the same |
| CN104649646A (en) * | 2015-02-27 | 2015-05-27 | 赵广清 | Plastic composite material |
Non-Patent Citations (2)
| Title |
|---|
| 戴骏等: "紫外辐照改性芳纶纤维的研究", 《人工晶体学报》 * |
| 韩景泉: "水泥基麦秸碎料复合材的研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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