CN104710152B - A kind of semi-hydrated gypsum base material imitated wood floor board and preparation method thereof - Google Patents
A kind of semi-hydrated gypsum base material imitated wood floor board and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to chemical building material technical field, a kind of especially semi-hydrated gypsum base material imitated wood floor board and preparation method thereof, appropriate proportioning and design is carried out by raw materials such as semi-hydrated gypsum, cement, coagulant, fibers, so that the quality of semi-hydrated gypsum is improved, and then improve the activity of semi-hydrated gypsum, improve the toughness and plasticity of the product of semi-hydrated gypsum making, it is that raw material makes base material bending and compressive strength, improves the freezing and thawing performance of semi-hydrated gypsum product to enhance semi-hydrated gypsum, improves the weatherability and decay resistance of semi-hydrated gypsum product；After appropriately being matched to raw material, with reference to the control of technical parameter in preparation technology, and then cause that the compatibility of semi-hydrated gypsum, cement, coagulant, fiber etc. is more excellent, and then cause that the cell size of product is uniform, enhance the waterproof and dampproof performance and mechanical strength of semi-hydrated gypsum base material.
Description
Technical field
The present invention relates to chemical building material technical field, especially a kind of semi-hydrated gypsum base material imitated wood floor board and its preparation side
Method.
Background technology
Wooden profile material is indoor and outdoor furniture, paving or ornamental main material, but timber growth cycle is long, resource
Less, cost of manufacture is high.Occur in that on the market now and much replace the product of timber with composite.But, these are combined
Material not disclosure satisfy that the demand of Wood products, can not reach the performance and quality of Wood products.At present, for wood
What the replacement production of material sheet material was mainly utilized is Wood plastic composite, and this is a kind of ep-type material, is provided simultaneously with string
With the advantage of plastics, the use field of all of log, plastics, plastic-steel, aluminium alloy composite similar with other can be covered.
But, above-mentioned material of the prior art is but still difficult to meet the demand of timber performance in itself, and then causes the family of lignifying
The service life of the material of tool, paving or ornamental timber is shorter, second-rate, the poor-performing of the product of making；Especially
It is poor resistance to corrosion, weather resistance.
Meanwhile, the heat-insulating property of the product that semi-hydrated gypsum makes is more excellent, the lighter weight of product, and obtains the resistance to of product
Corrosive nature and weatherability are more excellent, but, make the base material of imitation products as raw material there is presently no using semi-hydrated gypsum
Document report；Also, gypsum is also one of more discarded object of current whole world volume of cargo in storage, and these are stored up will cause environment
A large amount of pollutions so that the land resource of large area is sustained damage.
Then, this researcher is by long-term exploration and research, and combines existing imitation wood coating, using gypsum as original
Material production base material, then the making of imitation wood product is carried out, and then imitated wood floor board is being made, for timber floor manufacture field provides one
New way；Timber resources has been saved, the denudation of forest has been reduced, ecological environment has been protected.
The content of the invention
In order to solve above-mentioned technical problem present in prior art, the present invention provides a kind of semi-hydrated gypsum base material imitation wood ground
Plate, the imitation wood excellent result of the imitated wood floor board, relatively low with insulation, anticorrosion, radioactivity, intensity is higher, freezing and thawing performance compared with
By force, weatherability is strong, the feature of lightweight.
Also, the present invention also provides a kind of preparation method of semi-hydrated gypsum base material imitated wood floor board, can enter semi-hydrated gypsum
Row activation, improves the activity of semi-hydrated gypsum, the toughness of enhancing semi-hydrated gypsum base material, improving the heat insulating ability and plasticity of base material, improves
The heat insulating ability and intensity of the product that semi-hydrated gypsum makes.
It is achieved particular by following technical scheme：
A kind of semi-hydrated gypsum base material imitated wood floor board, its raw material composition is in parts by weight semi-hydrated gypsum 70-100 parts, cement
1-20 parts, coagulant 0.1-3 parts, fiber 0.1-2 parts, 10-20 parts of imitation wood coating.
Described raw material composition is in parts by weight 85 parts of semi-hydrated gypsum, 10 parts of cement, 1.5 parts of coagulant, 1 part of fiber,
13 parts of imitation wood coating.
Described raw material composition is in parts by weight 80 parts of semi-hydrated gypsum, 15 parts of cement, 2 parts of coagulant, 0.7 part of fiber,
17 parts of imitation wood coating.
Described cement is magnesia oxychloride cement.
Described coagulant is the one kind in aluminum sulfate, calcium chloride, calcium nitrate, calcium nitrite.
Described fiber is the one kind in polyester fiber, bamboo-carbon fibre, ceramic fibre, glass fibre.
Described imitation wood coating is by polystyrene 8-10 parts in parts by weight, butadiene-styrene rubber 1-1.5 parts, polyamide resin
Fat 1.5-3 parts, foaming agent 0.05-0.15 parts, lubricant 0.05-0.3 parts, dispersant 0.07-0.13 parts；Its preparation method be by
Above-mentioned raw materials are added into mixing channel successively, and adjust temperature for 40-60 DEG C, use mixing speed for 70-80r/min stirrings at
Reason 3-7h, then it is 30-40 DEG C of storage treatment 1-3h to be placed on temperature, then used mixing speed to be stirred for 120-130r/min
Mix treatment 0.5-1h, you can.
Described foaming agent is fluoro trichloromethane；Lubricant is polytetrafluoroethylene (PTFE)；Dispersant is polyethylene glycol.
The preparation method of the semi-hydrated gypsum base material imitated wood floor board, comprises the following steps：
(1) in semi-hydrated gypsum, coagulant, fiber, cement being sequentially added into mixing channel, and the temperature adjusted in mixing channel is
40-60 DEG C, use mixing speed to be stirred for 90-110r/min, then be placed in the environment that temperature is 45-55 DEG C, it is old
After changing treatment 2-5h, then the ball mill is used to carry out ball milling, you can to obtain slurries, and slurries are cast in floor mold,
And moved on shake table together with mould, it is 60-80Hz vibration processing 10-20min to use vibration frequency, then is placed on temperature
5-10min is placed to be stood in 40-50 DEG C of environment, mould is removed, base material just base is obtained；
(2) by step 1) just base is moved to during temperature is 40-50 DEG C of environment for the base material that obtains, after placing 2-3 days, then by
It is 50-56 DEG C that it uses vapor (steam) temperature, and pressure is 1.5-1.7MPa, steam press maintenance treatment 10-20s, you can obtain base material；
(3) by step 2) base material that obtains is smooth using sand papering, then the half of imitation wood coating is instilled contain 5-
7kg, during temperature is for the 40-50 DEG C of dye cell of water, then is placed into dye cell by base material, and to dye cell using 30-45r/min's
Mixing speed stir process, after base material immersion reaches 1-3min, is drawn off being placed in the environment that temperature is 40-55 DEG C, puts
20-30min is put, then surface is sprayed on using other half imitation wood coating, and it is 30-45 DEG C to be used vapor (steam) temperature, pressure
For 1.3-1.45MPa steam press maintenances process 10-20s, you can obtain semi-hydrated gypsum base material imitated wood floor board.
Described spraying uses dual nozzle spray gun flush coater and is sprayed, a diameter of 3-7mm of muzzle of spray gun.
Compared with prior art, technique effect of the invention is embodied in：
1. appropriate proportioning and design is carried out by raw materials such as semi-hydrated gypsum, cement, coagulant, fibers so that half water stone
The quality of cream is improved, and then improves the activity of semi-hydrated gypsum, improve semi-hydrated gypsum making product toughness and
Plasticity, it is that raw material makes base material bending and compressive strength, improves the freezing and thawing performance of semi-hydrated gypsum product to enhance semi-hydrated gypsum,
Improve the weatherability and decay resistance of semi-hydrated gypsum product.
2. by appropriately being matched to raw material after, with reference to the control of technical parameter in preparation technology, so cause half water
The compatibility of gypsum, cement, coagulant, fiber etc. is more excellent, and then causes that the cell size of product is uniform, enhances semi-hydrated gypsum
The waterproof and dampproof performance and mechanical strength of base material.
Furthermore 3., the present invention combines treatment to paint spraying so that imitation wood coating can perfectly with semi-hydrated gypsum base
Material is combined so that the contact effect of contact surface is preferable, it is to avoid coating is easy to the technological deficiency for coming off after the completion of application,
Improve the quality of product.
4. the raw material in the present invention is easily obtained, and raw material sources are abundant and can reduce ardealite in natural environment
Heap high-volume, and then reduces the occupancy of land resource, alleviates the financial burden of Wet-process Phosphoric Acid Production enterprise, and ardealite is entered
Row recycling, reduces environmental pollution, with significant economic benefit and the value of environmental protection；Also, preparation work of the invention
Skill flow is short, with short production cycle, and technical parameter is easily controllable, and cost of manufacture is cheap.
Specific embodiment
Technical scheme is further limited with reference to specific embodiment, but claimed
Scope is not only limited to description.
Embodiment 1
A kind of semi-hydrated gypsum base material imitated wood floor board, its raw material composition is semi-hydrated gypsum 70kg, cement 1kg, coagulant
0.1kg, fiber 0.1kg, imitation wood coating 10kg.
Described cement is magnesia oxychloride cement.
Described coagulant is aluminum sulfate.
Described fiber is polyester fiber.
Described imitation wood coating is by polystyrene 8kg in parts by weight, butadiene-styrene rubber 1kg, polyamide
1.5kg, foaming agent 0.05kg, lubricant 0.05kg, dispersant 0.07kg；Its preparation method is to be added into above-mentioned raw materials successively
In mixing channel, and temperature is adjusted for 40 DEG C, it is 70r/min stir process 3h to use mixing speed, then it is 30 to be placed on temperature
DEG C storage treatment 1h, then it is 120r/min stir process 0.5h to be used mixing speed, you can.
Described foaming agent is fluoro trichloromethane；Lubricant is polytetrafluoroethylene (PTFE)；Dispersant is polyethylene glycol.
The preparation method of the semi-hydrated gypsum base material imitated wood floor board, comprises the following steps：
(1) in semi-hydrated gypsum, coagulant, fiber, cement being sequentially added into mixing channel, and the temperature adjusted in mixing channel is
40 DEG C, use mixing speed to be stirred for 90r/min, then be placed in the environment that temperature is 45 DEG C, after ripening 2h,
Being used ball mill again carries out ball milling, you can obtain slurries, and slurries are cast in floor mold, and together with mould movement
Onto shake table, it is 60Hz vibration processing 10min to use vibration frequency, then is placed in the environment that temperature is 40 DEG C to stand and puts
5min is put, mould is removed, base material just base is obtained；
(2) by step 1) base material that obtains during just base moves to the environment that temperature is 40 DEG C, after placing 2 days, then adopted
It it is 50 DEG C with vapor (steam) temperature, pressure is 1.5MPa, steam press maintenance treatment 10s, you can obtain base material；
(3) by step 2) base material that obtains is smooth using sand papering, then the half of imitation wood coating is instilled contain 5kg,
During temperature is 40 DEG C of dye cells of water, then base material is placed into dye cell, and dye cell is stirred using the mixing speed of 30r/min
Treatment is mixed, after base material immersion reaches 1min, is drawn off being placed in the environment that temperature is 40 DEG C, place 20min, then using another
Outer half imitation wood coating is sprayed on surface, and it is 30 DEG C to be used vapor (steam) temperature, and pressure is the treatment of 1.3MPa steam press maintenances
10s, you can obtain semi-hydrated gypsum base material imitated wood floor board.
Described spraying uses dual nozzle spray gun flush coater and is sprayed, a diameter of 3mm of muzzle of spray gun.
Embodiment 2
A kind of semi-hydrated gypsum base material imitated wood floor board, its raw material composition is semi-hydrated gypsum 100kg, cement 20kg, coagulant
3kg, fiber 2kg, imitation wood coating 20kg.
Described cement is magnesia oxychloride cement.
Described coagulant is calcium chloride.
Described fiber is bamboo-carbon fibre.
Described imitation wood coating is by polystyrene 10kg in parts by weight, butadiene-styrene rubber 1.5kg, polyamide
3kg, foaming agent 0.15kg, lubricant 0.3kg, dispersant 0.13kg；Its preparation method be above-mentioned raw materials are added into successively it is mixed
In conjunction groove, and temperature is adjusted for 60 DEG C, it is 80r/min stir process 7h to use mixing speed, then be placed on temperature for 40 DEG C
Storage treatment 3h, then it is 130r/min stir process 1h to be used mixing speed, you can.
Described foaming agent is fluoro trichloromethane；Lubricant is polytetrafluoroethylene (PTFE)；Dispersant is polyethylene glycol.
The preparation method of the semi-hydrated gypsum base material imitated wood floor board, comprises the following steps：
(1) in semi-hydrated gypsum, coagulant, fiber, cement being sequentially added into mixing channel, and the temperature adjusted in mixing channel is
60 DEG C, use mixing speed to be stirred for 110r/min, then be placed in the environment that temperature is 55 DEG C, ripening 5h
Afterwards, then the ball mill is used to carry out ball milling, you can to obtain slurries, and slurries are cast in floor mold, and together with mould
Move on shake table, it is 80Hz vibration processing 20min to use vibration frequency, then be placed on quiet in the environment that temperature is 50 DEG C
Placement location 10min, removes mould, obtains base material just base；
(2) by step 1) base material that obtains during just base moves to the environment that temperature is 50 DEG C, after placing 3 days, then adopted
It it is 56 DEG C with vapor (steam) temperature, pressure is 1.7MPa, steam press maintenance treatment 20s, you can obtain base material；
(3) by step 2) base material that obtains is smooth using sand papering, then the half of imitation wood coating is instilled contain 7kg,
During temperature is 50 DEG C of dye cells of water, then base material is placed into dye cell, and dye cell is stirred using the mixing speed of 45r/min
Treatment is mixed, after base material immersion reaches 3min, is drawn off being placed in the environment that temperature is 55 DEG C, place 30min, then using another
Outer half imitation wood coating is sprayed on surface, and it is 45 DEG C to be used vapor (steam) temperature, and pressure is the treatment of 1.45MPa steam press maintenances
20s, you can obtain semi-hydrated gypsum base material imitated wood floor board.
Described spraying uses dual nozzle spray gun flush coater and is sprayed, a diameter of 7mm of muzzle of spray gun.
Embodiment 3
A kind of semi-hydrated gypsum base material imitated wood floor board, its raw material composition is semi-hydrated gypsum 85kg, cement 10kg, coagulant
1.5kg, fiber 1kg, imitation wood coating 13kg.
Described cement is magnesia oxychloride cement.
Described coagulant is calcium nitrate.
Described fiber is ceramic fibre.
Described imitation wood coating is by polystyrene 9kg in parts by weight, butadiene-styrene rubber 1.3kg, polyamide
2kg, foaming agent 0.09kg, lubricant 0.15kg, dispersant 0.11kg；Its preparation method be above-mentioned raw materials are added into successively it is mixed
In conjunction groove, and temperature is adjusted for 50 DEG C, it is 75r/min stir process 5h to use mixing speed, then be placed on temperature for 35 DEG C
Storage treatment 2h, then it is 125r/min stir process 0.9h to be used mixing speed, you can.
Described foaming agent is fluoro trichloromethane；Lubricant is polytetrafluoroethylene (PTFE)；Dispersant is polyethylene glycol.
The preparation method of the semi-hydrated gypsum base material imitated wood floor board, comprises the following steps：
(1) in semi-hydrated gypsum, coagulant, fiber, cement being sequentially added into mixing channel, and the temperature adjusted in mixing channel is
50 DEG C, use mixing speed to be stirred for 100r/min, then be placed in the environment that temperature is 50 DEG C, ripening 3h
Afterwards, then the ball mill is used to carry out ball milling, you can to obtain slurries, and slurries are cast in floor mold, and together with mould
Move on shake table, it is 70Hz vibration processing 15min to use vibration frequency, then be placed on quiet in the environment that temperature is 45 DEG C
Placement location 8min, removes mould, obtains base material just base；
(2) by step 1) base material that obtains during just base moves to the environment that temperature is 45 DEG C, after placing 2 days, then adopted
It it is 53 DEG C with vapor (steam) temperature, pressure is 1.6MPa, steam press maintenance treatment 15s, you can obtain base material；
(3) by step 2) base material that obtains is smooth using sand papering, then the half of imitation wood coating is instilled contain 6kg,
During temperature is 45 DEG C of dye cells of water, then base material is placed into dye cell, and dye cell is stirred using the mixing speed of 35r/min
Treatment is mixed, after base material immersion reaches 2min, is drawn off being placed in the environment that temperature is 45 DEG C, place 25min, then using another
Outer half imitation wood coating is sprayed on surface, and it is 35 DEG C to be used vapor (steam) temperature, and pressure is the treatment of 1.35MPa steam press maintenances
15s, you can obtain semi-hydrated gypsum base material imitated wood floor board.
Described spraying uses dual nozzle spray gun flush coater and is sprayed, a diameter of 5mm of muzzle of spray gun.
Embodiment 4
A kind of semi-hydrated gypsum base material imitated wood floor board, its raw material composition be semi-hydrated gypsum 80kg, cement 15kg, coagulant 2kg,
Fiber 0.7kg, imitation wood coating 17kg.
Described cement is magnesia oxychloride cement.
Described coagulant is calcium nitrite.
Described fiber is glass fibre.
Described imitation wood coating is by polystyrene 9kg in parts by weight, butadiene-styrene rubber 1.1kg, polyamide
2.5kg, foaming agent 0.13kg, lubricant 0.27kg, dispersant 0.12kg；Its preparation method is to be added into above-mentioned raw materials successively
In mixing channel, and temperature is adjusted for 53 DEG C, it is 77r/min stir process 4h to use mixing speed, then it is 37 to be placed on temperature
DEG C storage treatment 2.7h, then it is 123r/min stir process 0.9h to be used mixing speed, you can.
Described foaming agent is fluoro trichloromethane；Lubricant is polytetrafluoroethylene (PTFE)；Dispersant is polyethylene glycol.
The preparation method of the semi-hydrated gypsum base material imitated wood floor board, comprises the following steps：
(1) in semi-hydrated gypsum, coagulant, fiber, cement being sequentially added into mixing channel, and the temperature adjusted in mixing channel is
49 DEG C, use mixing speed to be stirred for 99r/min, then be placed in the environment that temperature is 49 DEG C, after ripening 4h,
Being used ball mill again carries out ball milling, you can obtain slurries, and slurries are cast in floor mold, and together with mould movement
Onto shake table, it is 69Hz vibration processing 19min to use vibration frequency, then is placed in the environment that temperature is 49 DEG C to stand and puts
9min is put, mould is removed, base material just base is obtained；
(2) by step 1) base material that obtains during just base moves to the environment that temperature is 49 DEG C, after placing 3 days, then adopted
It it is 51 DEG C with vapor (steam) temperature, pressure is 1.55MPa, steam press maintenance treatment 19s, you can obtain base material；
(3) by step 2) base material that obtains is smooth using sand papering, then the half of imitation wood coating is instilled contain 5kg,
During temperature is 49 DEG C of dye cells of water, then base material is placed into dye cell, and dye cell is stirred using the mixing speed of 40r/min
Treatment is mixed, after base material immersion reaches 2min, is drawn off being placed in the environment that temperature is 50 DEG C, place 29min, then using another
Outer half imitation wood coating is sprayed on surface, and it is 40 DEG C to be used vapor (steam) temperature, and pressure is the treatment of 1.4MPa steam press maintenances
19s, you can obtain semi-hydrated gypsum base material imitated wood floor board.
Described spraying uses dual nozzle spray gun flush coater and is sprayed, a diameter of 6mm of muzzle of spray gun.
Herein it is important to point out that, above-described embodiment be only limitted to be further elaborated technical scheme and
Illustrate, be not the limitation to technical scheme, the reality of the non-protruding that those skilled in the art make on this basis
The improvement of matter feature and non-significant progress, belongs to protection category of the invention.
Claims (9)
1. a kind of semi-hydrated gypsum base material imitated wood floor board, it is characterised in that its raw material composition, is in parts by weight semi-hydrated gypsum 70-
100 parts, cement 1-20 parts, coagulant 0.1-3 parts, fiber 0.1-2 parts, 10-20 parts of imitation wood coating；
The preparation method of described semi-hydrated gypsum base material imitated wood floor board, comprises the following steps：
(1) in semi-hydrated gypsum, coagulant, fiber, cement being sequentially added into mixing channel, and the temperature in mixing channel is adjusted for 40-
60 DEG C, use mixing speed to be stirred for 90-110r/min, then be placed in the environment that temperature is 45-55 DEG C, at ageing
After reason 2-5h, then the ball mill is used to carry out ball milling, you can to obtain slurries, and slurries are cast in floor mold, and even
Moved on shake table with mould, it is 60-80Hz vibration processing 10-20min to use vibration frequency, then be placed on temperature and be
Stood in 40-50 DEG C of environment and place 5-10min, remove mould, obtain base material just base；
(2) by step 1) just base is moved to during temperature is 40-50 DEG C of environment for the base material that obtains, after placing 2-3 days, then adopted
It it is 50-56 DEG C with vapor (steam) temperature, pressure is 1.5-1.7MPa, steam press maintenance treatment 10-20s, you can obtain base material；
(3) by step 2) base material that obtains is smooth using sand papering, then the half of imitation wood coating is instilled contain 5-7kg, temperature
In spending for the 40-50 DEG C of dye cell of water, then base material is placed into dye cell, and it is fast using the stirring of 30-45r/min to dye cell
Degree stir process, after base material immersion reaches 1-3min, is drawn off being placed in the environment that temperature is 40-55 DEG C, places 20-
30min, then surface is sprayed on using other half imitation wood coating, and it is 30-45 DEG C to be used vapor (steam) temperature, pressure is 1.3-
1.45MPa steam press maintenances process 10-20s, you can obtain semi-hydrated gypsum base material imitated wood floor board.
2. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterised in that described raw material composition, with weight
Part is calculated as 85 parts of semi-hydrated gypsum, 10 parts of cement, 1.5 parts of coagulant, 1 part of fiber, 13 parts of imitation wood coating.
3. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterised in that described raw material composition, with weight
Part is calculated as 80 parts of semi-hydrated gypsum, 15 parts of cement, 2 parts of coagulant, 0.7 part of fiber, 17 parts of imitation wood coating.
4. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterised in that described cement is chlorine oxygen magnesium water
Mud.
5. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterised in that described coagulant be aluminum sulfate,
One kind in calcium chloride, calcium nitrate, calcium nitrite.
6. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterised in that described fiber be polyester fiber,
One kind in bamboo-carbon fibre, ceramic fibre, glass fibre.
7. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterised in that described spraying uses double mouths
Spray gun spraying machine is sprayed, a diameter of 3-7mm of muzzle of spray gun.
8. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterised in that described imitation wood coating is by with weight
Polystyrene 8-10 parts, butadiene-styrene rubber 1-1.5 parts, polyamide 1.5-3 parts, foaming agent 0.05-0.15 parts, profit of amount part meter
Lubrication prescription 0.05-0.3 parts, dispersant 0.07-0.13 parts；Its preparation method is to be added into mixing channel above-mentioned raw materials successively, and
Adjustment temperature is 40-60 DEG C, and it is 70-80r/min stir process 3-7h to use mixing speed, then is placed on temperature for 30-40
DEG C storage treatment 1-3h, then it is 120-130r/min stir process 0.5-1h to be used mixing speed, you can.
9. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterised in that described foaming agent is a fluorine trichlorine
Methane；Lubricant is polytetrafluoroethylene (PTFE)；Dispersant is polyethylene glycol.
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| CN106988506A (en) * | 2017-04-28 | 2017-07-28 | 四川翊森热能科技有限责任公司 | A kind of preparation method for being incubated health type floor |
| CN107698223A (en) * | 2017-10-25 | 2018-02-16 | 德清红朝岗石科技有限公司 | A kind of imitation wood plate and its manufacture craft |
| CN112851278B (en) * | 2021-01-20 | 2022-07-01 | 荆门千年健医疗保健科技有限公司 | Gypsum substrate wood-like board and flitch, preparation method thereof and composite gypsum board |
| CN117735945B (en) * | 2024-02-19 | 2024-04-26 | 北京安科兴业科技股份有限公司 | Low-carbon gel material and preparation method thereof |
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