CN111155670B - Radiation-proof lead plate composite gypsum board - Google Patents
Radiation-proof lead plate composite gypsum board Download PDFInfo
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- CN111155670B CN111155670B CN201811316872.3A CN201811316872A CN111155670B CN 111155670 B CN111155670 B CN 111155670B CN 201811316872 A CN201811316872 A CN 201811316872A CN 111155670 B CN111155670 B CN 111155670B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
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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
- C04B28/14—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 calcium sulfate cements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B2001/925—Protection against harmful electro-magnetic or radio-active radiations, e.g. X-rays
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Abstract
The invention discloses a radiation-proof lead plate composite gypsum board, which is sequentially provided with a coating-free environment-friendly decorative board, a first lead plate and a first paper-surface gypsum board from outside to inside; exempt from between application environmental protection decorative board and the first lead plate, all bond mutually through the mode that bonding gypsum point glues and bonding material point glues and combine together between first lead plate and the first thistle board. The composite gypsum board realizes the radiation protection, formaldehyde purification and self-decoration functions of the composite board by compounding the lead board between the formaldehyde-purifying paper-surface gypsum boards and compounding the coating-free environment-friendly decorative board on the surface; meanwhile, the composite units of the composite board adopt a staggered composite form, so that the composite board has an assembly function, the application range and the value of the gypsum plaster board are widened, and the problem of installation and fixation is solved.
Description
Technical Field
The invention relates to the field of building materials, in particular to a radiation-proof lead plate composite gypsum board.
Background
Numerous studies prove that ionizing radiation such as X-rays acts on organisms and interacts with cells, tissues, body fluid and the like of the organisms to cause atom or molecule ionization of substances, can directly destroy certain macromolecular structures in the organisms, such as breaking protein molecular chains, breaking ribonucleic acid or deoxyribonucleic acid, destroying enzymes which have significance to substance metabolism and the like, and even can directly damage cell structures; in addition, the rays can ionize water molecules in the organism to form a plurality of free radicals, and the indirect action of the free radicals is used for damaging the organism. The injury of radiation to human body cells can cause the self pathological changes of the body, and the injury to germ cells can affect offspring through heredity. Specifically, radiation can cause general weakness, appetite decrease, leukopenia, immunity decrease, chromosome rupture or gene mutation, premature senility, growth disorder, sterility, embryo malformation, etc., and even cause various cancers and death. Therefore, in daily work and life, the radiation protection is very important, and shielding measures are required to be taken in areas with ionizing radiation.
The paper-surface gypsum board has the advantages of fire resistance, water resistance, sound insulation, mildew resistance, aldehyde purification, energy conservation, environmental protection, breathing function, light weight, shock resistance, easy decoration, dry construction, recycling and the like, so that the paper-surface gypsum board is commonly used in public buildings and home decoration, particularly countries such as Europe, America, Japan and Korean.
The coating-free environment-friendly decorative board with decoration is characterized in that decorative materials such as PVC films, wallpaper and wall cloth are compounded with a gypsum board on the surface of the gypsum board through a special process, so that the gypsum board is used as a wall structure material and is also a decorative surface decorative material, belongs to a newly developed product in the gypsum board industry, and changes the history and the current situation that the gypsum board can only be used as a wall ceiling base board. In addition, the newly developed formaldehyde-free gypsum board in the market can decompose formaldehyde into inert solid compounds to be stored in the gypsum board core, so that the aim of thoroughly eliminating formaldehyde harm is fulfilled. In addition, some researches on gypsum boards with radiation protection functions have been carried out, but the radiation protection functions of the existing products are not strong enough and cannot be used in a large area; and no gypsum board product with the functions of radiation protection and formaldehyde purification is available in the market.
Disclosure of Invention
The present invention is directed to solving the problems described above. The invention aims to provide a radiation-proof lead plate composite gypsum board, which realizes that the composite gypsum board has radiation-proof, aldehyde-cleaning and self-decorative functions by compounding a lead plate between aldehyde-cleaning paper surface gypsum boards and compounding a coating-free environment-friendly decorative board on the surface; meanwhile, the composite units of the composite board adopt a staggered composite form, so that the composite board has an assembly function, the application range and the value of the gypsum plaster board are widened, and the problem of installation and fixation is solved.
According to one aspect of the invention, the invention provides a radiation-proof lead plate composite gypsum board, which is sequentially provided with a coating-free environment-friendly decorative board, a first lead plate and a first paper-surface gypsum board from outside to inside;
exempt from application environmental protection decorative board with between the first lead plate, all bond mutually through the mode that bonding gypsum point glues and bonding material point glues and combine together between first lead plate and the first thistle board.
The bonding gypsum comprises the following components in percentage by mass:
wherein the content of each component of the bonding gypsum is expressed by mass ratio as follows:
the point bonding operation of the bonding gypsum comprises the following specific operations: adding the bonding gypsum into water, stirring, preparing, and coating the prepared bonding gypsum on the back of the coating-free environment-friendly decorative board and the surface of the first paper surface gypsum board in a dot manner; or spot-coating the two sides of the first lead plate;
wherein the diameter of each bonding gypsum point is 40-70mm, the thickness is 5-10mm, and the distance between the bonding gypsum points is 300-400 mm.
The lead plate is subjected to sand blasting or sanding treatment, and the surface roughness Ra of the lead plate is 80-120.
The radiation-proof lead plate composite gypsum board also comprises a second lead plate and a second paper-faced gypsum board;
the second lead plate is arranged on the inner side of the first paper-surface gypsum plate, and the second paper-surface gypsum plate is arranged on the inner side of the second lead plate.
Wherein, exempt from to scribble environmental protection decorative board and first stereotype coincidence, and with first thistle board dislocation arrangement.
Wherein, the bonding material is a 3M double-sided adhesive tape or a structural adhesive.
Wherein, first paper face gypsum board, second paper face gypsum board are net aldehyde paper face gypsum board.
The coating-free environment-friendly decorative board is a paper-surface gypsum board with PVC films, wallpaper and wall cloth for surface decoration.
The radiation-proof lead plate composite gypsum board provided by the invention is sequentially provided with a coating-free environment-friendly decorative board, a first lead plate and a first paper-surface gypsum board from outside to inside; further, the gypsum board also comprises a second lead board and a second paper-surface gypsum board; the second lead plate is arranged on the inner side of the first paper-surface gypsum board, and the second paper-surface gypsum board is arranged on the inner side of the second lead plate.
The coating-free environment-friendly decorative plate is bonded with the first lead plate, and the first lead plate is bonded with the first paper-surface gypsum plate in a mode of combining point bonding of bonding gypsum and point bonding of bonding materials; similarly, the second lead plate is bonded with the first paper-surface gypsum plate and the second paper-surface gypsum plate by adopting the bonding mode.
The coating-free environment-friendly decorative board is a paper-surface gypsum board with PVC films, wallpaper, wall cloth and other surface decorations; the first paper-surface gypsum board and the second paper-surface gypsum board are paper-surface gypsum boards with aldehyde-purifying effect. The point bonding mode is mainly used for keeping gaps between the first paper-surface gypsum board and the second paper-surface gypsum board and between the first lead board and the second lead board, so that the formaldehyde cleaning effect is not influenced, and the use of bonding gypsum and bonding materials is saved.
In the present invention, the components of the bonding gypsum have been studied in order to further improve the adhesive force of the bonding gypsum in bonding metal and paper-faced gypsum boards. The bonding gypsum comprises the following components in percentage by mass: 100 parts of building gypsum; 0.4-2.4 parts of rubber powder; 0.15 mass part of retarder, 0.5-3 mass parts of heavy calcium powder; further preferably, 100 parts by mass of the building gypsum; 1.2-2.0 parts by mass of rubber powder; 0.5-2 parts of heavy calcium powder. Researches show that the building gypsum is added with a proper amount of rubber powder and heavy calcium carbonate powder, so that the building gypsum has a better bonding effect compared with the commercially available bonding gypsum. The rubber powder is preferably vinyl acetate rubber powder.
During bonding, adding bonding gypsum into water, stirring, preparing, and dot-coating the prepared bonding gypsum on the coating-free environment-friendly decorative board and the first paper-surface gypsum board or lead board; wherein the diameter of each bonding gypsum point is 40-70mm, the thickness is 5-10mm, and the distance between the bonding gypsum points is 300-400 mm. The setting of the parameters fully considers the bonding effect of the bonding gypsum, and the bonding effect can be ensured by adopting a point bonding mode of bonding gypsum points as few as possible; and can make and remain more spaces between thistle board and the stereotype, the air can freely pass in and out the compound coating-free of radiation protection stereotype and decorate clean aldehyde board through the gap between profile and the thistle board, can bring the formaldehyde molecule in the air into the compound gypsum board of radiation protection stereotype and fully combine with each clean aldehyde thistle board, guarantees clean aldehyde effect.
In order to further enhance the bonding effect between the plates, the bonding material is adopted for point bonding on the basis of point bonding of the bonding gypsum; the adhesive material can be 3M double-sided adhesive tape or structural adhesive, for example, the adhesive tape can be commercially available 3M adhesive tape, and the specification is generally 25mm × 0.8mm or 25mm × 1.1 mm. Evenly stuck between the bonding plaster points. Because the bonding gypsum has low price, convenient construction and high bonding strength of the 3M adhesive, the bonding strength can be ensured and the cost of the bonding material can be reduced by combining the two bonding modes; and the bonding gypsum has pores, so that the bonding gypsum is more favorable for the absorption and permeation of harmful gases such as formaldehyde and the like.
The composite gypsum board of the invention needs surface treatment, such as sand blasting or sanding treatment, on the first lead plate and the second lead plate, and the surface roughness Ra of the treated lead plates is 80-120, preferably 100. The roughness can effectively increase the contact area between the lead plate and the bonding material and improve the bonding strength. The lead plates are at least two layers, and the lead plates are arranged in a staggered manner, so that the lead plates of the whole wall body are free of through seams, the leakage of rays is prevented, and the radiation resistance of the lead plate composite gypsum board is improved; meanwhile, the structure is convenient for assembly type installation and dry construction. The formaldehyde-removing gypsum board is added into the composite gypsum board, so that the composite gypsum board has a radiation-proof function, also has a formaldehyde purification function, and improves the indoor air quality.
The coating-free environment-friendly decorative plate of the radiation-proof lead plate composite gypsum board is superposed with the first lead plate, and the first paper-surface gypsum board, the second lead plate and the second paper-surface gypsum board are superposed; the coating-free environment-friendly decorative plate, the first lead plate and the first paper-surface gypsum plate are arranged in a staggered manner. The combined units are compounded in a staggered mode, adjacent radiation-proof lead plate and composite gypsum boards are mutually overlapped when the combined units are installed, and the whole wall body is free of through seams, so that radiation leakage is prevented; meanwhile, the assembly type and dry construction of the radiation-proof lead plate composite gypsum board is facilitated.
Other characteristic features and advantages of the invention will become apparent from the following description of embodiments, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention, in which like reference numerals are used to designate like elements, and the drawings in the following description are some, but not all embodiments of the invention, and will enable one of ordinary skill in the art to make and use the invention.
FIG. 1 shows a cross-sectional view of one embodiment of a radiation protective lead sheet composite gypsum board according to the present invention;
wherein, 1 is a coating-free environment-friendly decorative plate, 2 is a first lead plate, 3 is a first paper-surface gypsum plate, 4 is a second lead plate, 5 is a second paper-surface gypsum plate, 6 is a bonding gypsum point, and 7 is a bonding material point;
fig. 2 shows a schematic view of the bonding gypsum dots and the adhesive material dots of one embodiment of a radiation protective lead sheet composite gypsum board according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The radiation-proof lead plate composite gypsum board provided by the invention is sequentially provided with a coating-free environment-friendly decorative board, a first lead plate and a first paper-surface gypsum board from outside to inside; in some embodiments, a second lead board and a second paper-faced gypsum board; the second lead plate is arranged on the inner side of the first paper-surface gypsum board, and the second paper-surface gypsum board is arranged on the inner side of the second lead plate.
The coating-free environment-friendly decorative plate is bonded with the first lead plate, and the first lead plate is bonded with the first paper-surface gypsum plate in a mode of combining point bonding of bonding gypsum and point bonding of bonding materials; similarly, the second lead plate is bonded with the first paper-surface gypsum plate and the second paper-surface gypsum plate by adopting the bonding mode.
The bonding gypsum comprises the following components in parts by mass: 100 parts of building gypsum; 0.4-2.4 parts of rubber powder; 0.15 part by mass of a retarder; 0.5-3 parts of coarse whiting powder; further preferably, 100 parts by mass of the building gypsum; 1.2-2.0 parts by mass of rubber powder; 0.5-2 parts of heavy calcium powder.
During bonding, adding bonding gypsum into water, stirring, preparing, and dot-coating the prepared bonding gypsum on the coating-free environment-friendly decorative board and the first paper-surface gypsum board or lead board; wherein the diameter of each bonding gypsum point is 40-70mm, the thickness is 5-10mm, and the distance between the bonding gypsum points is 300-400 mm.
The adhesive material points are double-sided adhesive tapes or structural adhesives, preferably 3M adhesive tapes, the specification is 25mm multiplied by 0.8mm or 25mm multiplied by 1.1mm, and the adhesive material points are uniformly stuck among the adhesive plaster points.
According to the composite gypsum board, the first lead plate and the second lead plate need to be subjected to sand blasting or sanding treatment, and the surface roughness Ra of the treated lead plates is 80-120, preferably 100.
The coating-free environment-friendly decorative plate of the radiation-proof lead plate composite gypsum board is superposed with the first lead plate, and the first paper-surface gypsum board, the second lead plate and the second paper-surface gypsum board are superposed; the coating-free environment-friendly decorative plate, the first lead plate and the first paper-surface gypsum plate are arranged in a staggered manner.
Examples
Example 1
The radiation-proof lead plate composite gypsum board is sequentially provided with a coating-free environment-friendly decorative board, a first lead plate and a first paper-surface gypsum board from outside to inside; exempt from between application environmental protection decorative board and the first lead plate, all bond mutually through the mode that bonding gypsum point glues and bonding material point glues and combine together between first lead plate and the first thistle board.
Wherein, the diameter of bonding gypsum point is 40mm, and thickness is 5mm, and the interval between bonding gypsum point is 300 mm. The content of each component of the bonding gypsum is expressed by mass parts as follows: 100 parts of building gypsum; 1.6 parts of rubber powder; 0.15 part by mass of a retarder; 2 parts of heavy calcium powder.
Example 2
The radiation-proof lead plate composite gypsum board is sequentially provided with a coating-free environment-friendly decorative board, a first lead plate and a first paper-surface gypsum board from outside to inside; exempt from between application environmental protection decorative board and the first lead plate, all bond mutually through the mode that bonding gypsum point glues and bonding material point glues and combine together between first lead plate and the first thistle board.
Wherein, the diameter of bonding gypsum point is 50mm, and thickness is 8mm, and the interval between bonding gypsum point is 350 mm. The content of each component of the bonding gypsum is expressed by mass parts as follows: 100 parts of building gypsum; 2.0 parts of rubber powder; 0.15 part by mass of a retarder; 1 part by mass of coarse whiting powder.
Example 3
The radiation-proof lead plate composite gypsum board is sequentially provided with a coating-free environment-friendly decorative board, a first lead plate, a first paper-surface gypsum board, a second lead plate and a second gypsum board from outside to inside; the panels of each layer are bonded by combining the point bonding of the bonding plaster and the point bonding of the bonding material.
Wherein the diameter of the bonding gypsum points is 60mm, the thickness is 5mm, and the distance between the bonding gypsum points is 400 mm. The content of each component of the bonding gypsum is expressed by mass parts as follows: 100 parts of building gypsum; 1.2 parts of rubber powder; 0.15 part by mass of a retarder; 0.5 part by mass of coarse whiting powder.
Example 4
The radiation-proof lead plate composite gypsum board is sequentially provided with a coating-free environment-friendly decorative board, a first lead plate, a first paper-surface gypsum board, a second lead plate and a second gypsum board from outside to inside; the panels of each layer are bonded by combining the point bonding of the bonding plaster and the point bonding of the bonding material.
Wherein the diameter of the bonding gypsum points is 70mm, the thickness is 10mm, and the distance between the bonding gypsum points is 400 mm. The content of each component of the bonding gypsum is expressed by mass parts as follows: 100 parts of building gypsum; 2.4 parts of rubber powder; 0.15 part by mass of a retarder; 1.5 parts of heavy calcium powder.
Test example
Test example 1
The aldehyde-cleaning effect of the radiation-proof lead plate composite gypsum board and the aldehyde-cleaning gypsum board is compared and tested. The specific test conditions are shown in table 1. The structure of the comparative composite board is the same as that of the embodiment 1, and the boards are bonded by adopting a bonding mode of fully bonding gypsum.
TABLE 1 comparison of aldehyde-cleaning effectiveness
| Example 1 | Example 2 | Example 3 | Example 4 | Aldehyde-removing gypsum board | Comparative composite sheet | |
| Aldehyde-cleaning effect | 93.3％ | 93.1％ | 92.8％ | 92.5％ | 93.9％ | 80.4％ |
As can be seen from the comparative data, in the examples 1 to 4 of the invention, the boards are bonded by combining the point bonding of the bonding gypsum and the point bonding of the bonding material, and the aldehyde-removing effect is equivalent to that of the aldehyde-removing gypsum board; and compared with the composite board, the formaldehyde-purifying effect is obviously greatly reduced.
Test example 2
The comparative tests of the bonding gypsum of the present invention and the conventional bonding gypsum in terms of bonding strength are shown below. Wherein, the numbers 1 to 6 are respectively bonding gypsum with different component contents, and the comparative example is common commercial bonding gypsum. The test standard is selected to test by using a method specified in JC/T1025-2007.
TABLE 2 bonding Gypsum compositions Nos. 1-6
| 1 | 2 | 3 | 4 | 5 | 6 | |
| Building gypsum | 100 | 100 | 100 | 100 | 100 | 100 |
| Rubber powder | 0.4 | 0.8 | 1.2 | 1.6 | 2.0 | 2.4 |
| Retarder | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 | 0.15 |
| Heavy calcium powder | 0.3 | 0.5 | 3 | 2 | 1.5 | 3.5 |
TABLE 3 comparison of the bond strengths of the Cement test blocks
As can be seen from the comparative data in Table 3, the bond strength of the gypsum composition of the present invention is significantly better for lead and gypsum board than for commercially available gypsum bonds.
In conclusion, according to the radiation-proof lead plate composite gypsum board provided by the invention, the lead plates are compounded between the aldehyde-purifying paper-surface gypsum boards, and the surface is compounded with the coating-free environment-friendly decorative board, so that the composite board has the functions of radiation protection, aldehyde purification and self decoration; meanwhile, the composite units of the composite board adopt a staggered composite form, so that the composite board has an assembly function, the application range and the value of the gypsum plaster board are widened, and the problem of installation and fixation is solved.
The above-described aspects may be implemented individually or in various combinations, and such variations are within the scope of the present invention.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (2)
1. The radiation-proof lead plate composite gypsum board is characterized in that a coating-free environment-friendly decorative board, a first lead plate and a first paper-surface gypsum board are sequentially arranged from outside to inside; the radiation-proof lead plate composite gypsum board also comprises a second lead plate and a second paper-faced gypsum board;
the second lead plate is arranged on the inner side of the first paper-surface gypsum board, and the second paper-surface gypsum board is arranged on the inner side of the second lead plate; the coating-free environment-friendly decorative plate is superposed with the first lead plate and is arranged in a staggered manner with the first paper-surface gypsum plate;
the first paper-surface gypsum board and the second paper-surface gypsum board are aldehyde-free paper-surface gypsum boards; the coating-free environment-friendly decorative board is a paper-surface gypsum board with PVC films, wallpaper and wall cloth surface decoration;
the coating-free environment-friendly decorative plate is bonded with the first lead plate, and the first lead plate is bonded with the first paper-surface gypsum plate in a mode of combining point bonding of bonding gypsum and point bonding of bonding materials; the adhesive material is a 3M double-sided adhesive tape, and the specification is 25mm multiplied by 0.8mm or 25mm multiplied by 1.1 mm;
the bonding gypsum comprises the following components in percentage by mass:
100 parts of building gypsum;
1.2-2.0 parts by mass of rubber powder;
0.15 part by mass of a retarder;
0.5-2 parts of heavy calcium powder;
the point bonding operation of the bonding gypsum comprises the following steps: adding the bonding gypsum into water, stirring, preparing, and coating the prepared bonding gypsum on the back of the coating-free environment-friendly decorative board and the surface of the first paper surface gypsum board in a dot manner; or spot-coating the two sides of the first lead plate;
wherein the diameter of each bonding gypsum point is 40-70mm, the thickness is 5-10mm, and the distance between the bonding gypsum points is 300-400 mm.
2. The radiation-proof lead plate composite gypsum board as claimed in claim 1, wherein the first lead plate and the second lead plate are subjected to sand blasting or sanding treatment, and the surface roughness Ra of the treated lead plates is 80-120.
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| CN116657780B (en) * | 2023-06-08 | 2023-11-21 | 北京城建集团有限责任公司 | Ionizing radiation protection double-layer suspended ceiling system and construction method thereof |
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| JP2013124533A (en) * | 2011-12-16 | 2013-06-24 | Koyo Sangyo Co Ltd | Lead board attached with gypsum board, and removable release sheet for application to the board |
| CN204983227U (en) * | 2015-07-31 | 2016-01-20 | 北新集团建材股份有限公司 | Modular walling body of decorating from area |
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| CN205955073U (en) * | 2016-07-20 | 2017-02-15 | 杭州华海木业有限公司 | Clean aldehyde ecological plate |
| CN108724451A (en) * | 2017-04-24 | 2018-11-02 | 北新集团建材股份有限公司 | A kind of net aldehyde environmental protection refractory plasterboard and its production method and production system |
| CN107500701A (en) * | 2017-09-30 | 2017-12-22 | 浙江杰林新材料有限公司 | A kind of filleting paste formulation |
| CN207572073U (en) * | 2017-11-20 | 2018-07-03 | 东莞市基一核材有限公司 | Nuclear Power Industry high intensity radiation protection isolation board |
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