CN104710152A - Hemihydrate gypsum base material imitation wood floor and preparation method thereof - Google Patents
Hemihydrate gypsum base material imitation wood floor and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of chemical building materials, in particular to a hemihydrate gypsum base material imitation wood floor and a preparation method thereof. By properly proportioning and designing raw materials such as hemihydrate gypsum, cement, a coagulation accelerator and the like, the quality of the hemihydrate gypsum is improved, the activity of the hemihydrate gypsum is improved, the toughness and plasticity of a product made from the hemihydrate gypsum are improved, the flexural and compressive strength of a base material made from the hemihydrate gypsum as a raw material is enhanced, the freeze-thaw resistance of a phosphogypsum product is improved, and the weather resistance and corrosion resistance of the phosphogypsum product are improved; by combination with control on technical parameters in a preparation process after the raw materials are properly proportioned, the compatibility of the hemihydrate gypsum, the cement, the coagulation accelerator, fibers and the like is relatively good, holes of the product are uniform in size, and the waterproof and dampproof performance and mechanical strength of the hemihydrate gypsum base material are improved.
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 preparation method thereof.
Background technology
Wooden profile material is indoor and outdoor furniture, paving or ornamental main raw, but the wood grows cycle is long, resource is few, cost of manufacture is high.There is the product much replacing timber with matrix material now on the market.But these matrix materials can not meet the demand of Wood products, can not reach the Performance and quality of Wood products.At present, what the alternative production for timber board mainly utilized is Wood plastic composite, this is a kind of ep-type material, possesses the advantage of vegetable fibre and plastics simultaneously, can contain the use field of all logs, plastics, plastic-steel, aluminium alloy and other similar matrix materials.But above-mentioned materials of the prior art is but still difficult to the demand meeting the performance of timber own, so cause lignified furniture, paving or ornamental timber work-ing life of material shorter, second-rate, the poor-performing of the product of making; Especially resistance to corrosion, weather resistance are all poor.
Meanwhile, the heat-insulating property of product that semi-hydrated gypsum makes is more excellent, the lighter weight of product, and obtain the corrosion resistance nature of product and weathering resistance all more excellent, but, also semi-hydrated gypsum is not made the bibliographical information of the base material of imitation products at present as raw material; Further, gypsum is also one of more waste of current global volume of cargo in storage, and these store up a large amount of pollutions that will cause environment, make large-area land resources sustain damage.
So this researchist through long-term Exploration & stu dy, and in conjunction with existing imitative wooden coating, using gypsum as raw material production base material, then carries out the making of imitative Wood products, and then at making imitated wood floor board, for timber floor manufacture field provides a new way; Save timber resources, reduced the denudation of forest, protect ecotope.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the invention provides a kind of semi-hydrated gypsum base material imitated wood floor board, the imitative wood effect of this imitated wood floor board is superior, have insulation, protection against corrosion, radioactivity are lower, intensity is higher, and freezing and thawing performance is stronger, weathering resistance is strong, the feature of lightweight.
And, the present invention also provides a kind of preparation method of semi-hydrated gypsum base material imitated wood floor board, semi-hydrated gypsum can be activated, improve the activity of semi-hydrated gypsum, strengthen the toughness of semi-hydrated gypsum base material, the heat retaining property improving base material and plasticity, improve heat retaining property and the intensity of the product that semi-hydrated gypsum makes.
Be achieved particular by following technical scheme:
A kind of semi-hydrated gypsum base material imitated wood floor board, its raw material composition take parts by weight as semi-hydrated gypsum 70-100 part, cement 1-20 part, setting accelerator 0.1-3 part, fiber 0.1-2 part, imitative wooden coating 10-20 part.
Described raw material composition take parts by weight as semi-hydrated gypsum 85 parts, cement 10 parts, setting accelerator 1.5 parts, fiber 1 part, imitative wooden coating 13 parts.
Described raw material composition take parts by weight as semi-hydrated gypsum 80 parts, cement 15 parts, setting accelerator 2 parts, fiber 0.7 part, imitative wooden coating 17 parts.
Described cement is magnesia oxychloride cement.
Described setting accelerator is the one in Tai-Ace S 150, calcium chloride, nitrocalcite, calcium nitrite.
Described fiber is the one in trevira, bamboo-carbon fibre, ceramic fiber, glass fibre.
Described imitative wooden coating is by with polystyrene 8-10 part of parts by weight, styrene-butadiene rubber(SBR) 1-1.5 part, polyamide resin 1.5-3 part, whipping agent 0.05-0.15 part, lubricant 0.05-0.3 part, dispersion agent 0.07-0.13 part; Its preparation method is added into successively in tempering tank by above-mentioned raw materials, and to adjust temperature be 40-60 DEG C, employing stirring speed is 70-80r/min stir process 3-7h, be placed on again temperature be 30-40 DEG C deposit process 1-3h, be 120-130r/min stir process 0.5-1h by its employing stirring speed again.
Described whipping agent is fluoro trichloromethane; Lubricant is tetrafluoroethylene; Dispersion agent is polyoxyethylene glycol.
The preparation method of this semi-hydrated gypsum base material imitated wood floor board, comprises the following steps:
(1) by semi-hydrated gypsum, setting accelerator, fiber, cement adds in tempering tank successively, and the temperature adjusted in tempering tank is 40-60 DEG C, employing stirring speed is that 90-110r/min stirs, being placed on temperature is again in the environment of 45-55 DEG C, after ripening 2-5h, ball mill is adopted to carry out ball milling again, slurries can be obtained, and slurries are cast in floor mold, and together with mold movement on shaking table, vibrational frequency is adopted to be 60-80Hz vibration treatment 10-20min, being placed on temperature is again leave standstill in the environment of 40-50 DEG C to place 5-10min, remove mould, obtain base material just bad,
(2) by step 1) just bad to move to temperature be in the environment of 40-50 DEG C for the base material that obtains, place after 2-3 days, then adopted vapor temperature to be 50-56 DEG C, pressure is 1.5-1.7MPa, and steam press maintenance process 10-20s, can obtain base material;
(3) by step 2) base material that obtains adopts sand papering smooth, again the instillation of the half of imitative wooden coating is contained 5-7kg, temperature is in the dye cell of 40-50 DEG C of water, again base material is placed into dye cell, and dye cell is adopted to the stirring velocity stir process of 30-45r/min, after base material immersion reaches 1-3min, taken out and be placed in the environment that temperature is 40-55 DEG C, place 20-30min, other half is adopted to imitate wooden paint spay-coating on surface again, and adopted vapor temperature to be 30-45 DEG C, pressure is 1.3-1.45MPa steam press maintenance process 10-20s, semi-hydrated gypsum base material imitated wood floor board can be obtained.
What described spraying adopted is that dual nozzle spray gun spraying machine sprays, and the muzzle diameter of spray gun is 3-7mm.
Compared with prior art, technique effect of the present invention is embodied in:
1. appropriate proportioning and design is carried out by raw materials such as semi-hydrated gypsum, cement, setting accelerator, fibers, the quality of semi-hydrated gypsum is improved, and then improve the activity of semi-hydrated gypsum, improve toughness and the plasticity of the product that semi-hydrated gypsum makes, enhancing semi-hydrated gypsum is that raw material makes base material bending and compressive strength, improves the freezing and thawing performance of phosphogypsum product, improves weathering resistance and the corrosion resistance nature of phosphogypsum product.
2. by after carrying out appropriate proportioning to raw material, in conjunction with the control of technical parameter in preparation technology, and then make the consistency of semi-hydrated gypsum, cement, setting accelerator, fiber etc. more excellent, and then make the cell size of product even, enhance waterproof and dampproof performance and the physical strength of semi-hydrated gypsum base material.
3. moreover, the present invention combines process to paint spraying, make imitative wooden coating can perfectly and semi-hydrated gypsum base material combine, make the contact effect of contact surface better, avoid the technological deficiency that coating is easy to come off after application completes, improve the quality of product.
4. the raw material in the present invention is easy to obtain, abundant raw material source and phosphogypsum can be reduced pile in physical environment high-volume, and then reduce the occupancy of land resources, alleviate the economical load of Wet-process Phosphoric Acid Production enterprise, phosphogypsum is carried out recycling, reduce environmental pollution, there is significant economic benefit and the value of environmental protection; Further, preparation technology's flow process of the present invention is short, with short production cycle, and technical parameter is easy to control, and cost of manufacture is cheap.
Embodiment
Below in conjunction with concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done 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, setting accelerator 0.1kg, fiber 0.1kg, imitative wooden coating 10kg.
Described cement is magnesia oxychloride cement.
Described setting accelerator is Tai-Ace S 150.
Described fiber is trevira.
Described imitative wooden coating is by with the polystyrene 8kg of parts by weight, styrene-butadiene rubber(SBR) 1kg, polyamide resin 1.5kg, whipping agent 0.05kg, lubricant 0.05kg, dispersion agent 0.07kg; Its preparation method is added into successively in tempering tank by above-mentioned raw materials, and to adjust temperature be 40 DEG C, employing stirring speed is 70r/min stir process 3h, then is placed on temperature and is 30 DEG C and deposits process 1h, be 120r/min stir process 0.5h by its employing stirring speed again.
Described whipping agent is fluoro trichloromethane; Lubricant is tetrafluoroethylene; Dispersion agent is polyoxyethylene glycol.
The preparation method of this semi-hydrated gypsum base material imitated wood floor board, comprises the following steps:
(1) semi-hydrated gypsum, setting accelerator, fiber, cement are added in tempering tank successively, and the temperature adjusted in tempering tank is 40 DEG C, employing stirring speed is that 90r/min stirs, being placed on temperature is again in the environment of 45 DEG C, after ripening 2h, ball mill is adopted to carry out ball milling again, slurries can be obtained, and slurries are cast in floor mold, and together with mold movement on shaking table, adopt vibrational frequency be 60Hz vibration treatment 10min, then be placed on temperature be in the environment of 40 DEG C leave standstill place 5min, remove mould, obtain base material just bad;
(2) by step 1) just bad to move to temperature be in the environment of 40 DEG C for the base material that obtains, place after 2 days, then adopted vapor temperature to be 50 DEG C, pressure is 1.5MPa, and steam press maintenance process 10s, can obtain base material;
(3) by step 2) base material that obtains adopts sand papering smooth, again the instillation of the half of imitative wooden coating is contained 5kg, temperature is in the dye cell of 40 DEG C of water, again base material is placed into dye cell, and dye cell is adopted to the stirring velocity stir process of 30r/min, after base material immersion reaches 1min, taken out and be placed in the environment that temperature is 40 DEG C, place 20min, other half is adopted to imitate wooden paint spay-coating on surface again, and being adopted vapor temperature to be 30 DEG C, pressure is 1.3MPa steam press maintenance process 10s, can obtain semi-hydrated gypsum base material imitated wood floor board.
What described spraying adopted is that dual nozzle spray gun spraying machine sprays, and the muzzle diameter of spray gun is 3mm.
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, setting accelerator 3kg, fiber 2kg, imitative wooden coating 20kg.
Described cement is magnesia oxychloride cement.
Described setting accelerator is calcium chloride.
Described fiber is bamboo-carbon fibre.
Described imitative wooden coating is by with the polystyrene 10kg of parts by weight, styrene-butadiene rubber(SBR) 1.5kg, polyamide resin 3kg, whipping agent 0.15kg, lubricant 0.3kg, dispersion agent 0.13kg; Its preparation method is added into successively in tempering tank by above-mentioned raw materials, and to adjust temperature be 60 DEG C, employing stirring speed is 80r/min stir process 7h, then is placed on temperature and is 40 DEG C and deposits process 3h, be 130r/min stir process 1h by its employing stirring speed again.
Described whipping agent is fluoro trichloromethane; Lubricant is tetrafluoroethylene; Dispersion agent is polyoxyethylene glycol.
The preparation method of this semi-hydrated gypsum base material imitated wood floor board, comprises the following steps:
(1) by semi-hydrated gypsum, setting accelerator, fiber, cement adds in tempering tank successively, and the temperature adjusted in tempering tank is 60 DEG C, employing stirring speed is that 110r/min stirs, being placed on temperature is again in the environment of 55 DEG C, after ripening 5h, ball mill is adopted to carry out ball milling again, slurries can be obtained, and slurries are cast in floor mold, and together with mold movement on shaking table, vibrational frequency is adopted to be 80Hz vibration treatment 20min, being placed on temperature is again leave standstill in the environment of 50 DEG C to place 10min, remove mould, obtain base material just bad,
(2) by step 1) just bad to move to temperature be in the environment of 50 DEG C for the base material that obtains, place after 3 days, then adopted vapor temperature to be 56 DEG C, pressure is 1.7MPa, and steam press maintenance process 20s, can obtain base material;
(3) by step 2) base material that obtains adopts sand papering smooth, again the instillation of the half of imitative wooden coating is contained 7kg, temperature is in the dye cell of 50 DEG C of water, again base material is placed into dye cell, and dye cell is adopted to the stirring velocity stir process of 45r/min, after base material immersion reaches 3min, taken out and be placed in the environment that temperature is 55 DEG C, place 30min, other half is adopted to imitate wooden paint spay-coating on surface again, and being adopted vapor temperature to be 45 DEG C, pressure is 1.45MPa steam press maintenance process 20s, can obtain semi-hydrated gypsum base material imitated wood floor board.
What described spraying adopted is that dual nozzle spray gun spraying machine sprays, and the muzzle diameter of spray gun is 7mm.
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, setting accelerator 1.5kg, fiber 1kg, imitative wooden coating 13kg.
Described cement is magnesia oxychloride cement.
Described setting accelerator is nitrocalcite.
Described fiber is ceramic fiber.
Described imitative wooden coating is by with the polystyrene 9kg of parts by weight, styrene-butadiene rubber(SBR) 1.3kg, polyamide resin 2kg, whipping agent 0.09kg, lubricant 0.15kg, dispersion agent 0.11kg; Its preparation method is added into successively in tempering tank by above-mentioned raw materials, and to adjust temperature be 50 DEG C, employing stirring speed is 75r/min stir process 5h, then is placed on temperature and is 35 DEG C and deposits process 2h, be 125r/min stir process 0.9h by its employing stirring speed again.
Described whipping agent is fluoro trichloromethane; Lubricant is tetrafluoroethylene; Dispersion agent is polyoxyethylene glycol.
The preparation method of this semi-hydrated gypsum base material imitated wood floor board, comprises the following steps:
(1) semi-hydrated gypsum, setting accelerator, fiber, cement are added in tempering tank successively, and the temperature adjusted in tempering tank is 50 DEG C, employing stirring speed is that 100r/min stirs, being placed on temperature is again in the environment of 50 DEG C, after ripening 3h, ball mill is adopted to carry out ball milling again, slurries can be obtained, and slurries are cast in floor mold, and together with mold movement on shaking table, adopt vibrational frequency be 70Hz vibration treatment 15min, then be placed on temperature be in the environment of 45 DEG C leave standstill place 8min, remove mould, obtain base material just bad;
(2) by step 1) just bad to move to temperature be in the environment of 45 DEG C for the base material that obtains, place after 2 days, then adopted vapor temperature to be 53 DEG C, pressure is 1.6MPa, and steam press maintenance process 15s, can obtain base material;
(3) by step 2) base material that obtains adopts sand papering smooth, again the instillation of the half of imitative wooden coating is contained 6kg, temperature is in the dye cell of 45 DEG C of water, again base material is placed into dye cell, and dye cell is adopted to the stirring velocity stir process of 35r/min, after base material immersion reaches 2min, taken out and be placed in the environment that temperature is 45 DEG C, place 25min, other half is adopted to imitate wooden paint spay-coating on surface again, and being adopted vapor temperature to be 35 DEG C, pressure is 1.35MPa steam press maintenance process 15s, can obtain semi-hydrated gypsum base material imitated wood floor board.
What described spraying adopted is that dual nozzle spray gun spraying machine sprays, and the muzzle diameter of spray gun is 5mm.
Embodiment 4
A kind of semi-hydrated gypsum base material imitated wood floor board, its raw material composition is semi-hydrated gypsum 80kg, cement 15kg, setting accelerator 2kg, fiber 0.7kg, imitative wooden coating 17kg.
Described cement is magnesia oxychloride cement.
Described setting accelerator is calcium nitrite.
Described fiber is glass fibre.
Described imitative wooden coating is by with the polystyrene 9kg of parts by weight, styrene-butadiene rubber(SBR) 1.1kg, polyamide resin 2.5kg, whipping agent 0.13kg, lubricant 0.27kg, dispersion agent 0.12kg; Its preparation method is added into successively in tempering tank by above-mentioned raw materials, and to adjust temperature be 53 DEG C, employing stirring speed is 77r/min stir process 4h, then is placed on temperature and is 37 DEG C and deposits process 2.7h, be 123r/min stir process 0.9h by its employing stirring speed again.
Described whipping agent is fluoro trichloromethane; Lubricant is tetrafluoroethylene; Dispersion agent is polyoxyethylene glycol.
The preparation method of this semi-hydrated gypsum base material imitated wood floor board, comprises the following steps:
(1) semi-hydrated gypsum, setting accelerator, fiber, cement are added in tempering tank successively, and the temperature adjusted in tempering tank is 49 DEG C, employing stirring speed is that 99r/min stirs, being placed on temperature is again in the environment of 49 DEG C, after ripening 4h, ball mill is adopted to carry out ball milling again, slurries can be obtained, and slurries are cast in floor mold, and together with mold movement on shaking table, adopt vibrational frequency be 69Hz vibration treatment 19min, then be placed on temperature be in the environment of 49 DEG C leave standstill place 9min, remove mould, obtain base material just bad;
(2) by step 1) just bad to move to temperature be in the environment of 49 DEG C for the base material that obtains, place after 3 days, then adopted vapor temperature to be 51 DEG C, pressure is 1.55MPa, and steam press maintenance process 19s, can obtain base material;
(3) by step 2) base material that obtains adopts sand papering smooth, again the instillation of the half of imitative wooden coating is contained 5kg, temperature is in the dye cell of 49 DEG C of water, again base material is placed into dye cell, and dye cell is adopted to the stirring velocity stir process of 40r/min, after base material immersion reaches 2min, taken out and be placed in the environment that temperature is 50 DEG C, place 29min, other half is adopted to imitate wooden paint spay-coating on surface again, and being adopted vapor temperature to be 40 DEG C, pressure is 1.4MPa steam press maintenance process 19s, can obtain semi-hydrated gypsum base material imitated wood floor board.
What described spraying adopted is that dual nozzle spray gun spraying machine sprays, and the muzzle diameter of spray gun is 6mm.
It is important to point out at this; above-described embodiment is only limitted to be further elaborated technical scheme of the present invention and illustrate; it is not the restriction to technical scheme of the present invention; the essential characteristics of the non-protruding that those skilled in the art make on this basis and the improvement of non-significant progress, all belong to protection category of the present invention.
Claims (10)
1. a semi-hydrated gypsum base material imitated wood floor board, is characterized in that, its raw material composition, take parts by weight as semi-hydrated gypsum 70-100 part, cement 1-20 part, setting accelerator 0.1-3 part, fiber 0.1-2 part, imitative wooden coating 10-20 part.
2. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, is characterized in that, described raw material composition, take parts by weight as semi-hydrated gypsum 85 parts, cement 10 parts, setting accelerator 1.5 parts, fiber 1 part, imitative wooden coating 13 parts.
3. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, is characterized in that, described raw material composition, take parts by weight as semi-hydrated gypsum 80 parts, cement 15 parts, setting accelerator 2 parts, fiber 0.7 part, imitative wooden coating 17 parts.
4. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterized in that, described cement is magnesia oxychloride cement.
5. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterized in that, described setting accelerator is the one in Tai-Ace S 150, calcium chloride, nitrocalcite, calcium nitrite.
6. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterized in that, described fiber is the one in trevira, bamboo-carbon fibre, ceramic fiber, glass fibre.
7. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterized in that, described imitative wooden coating is by with polystyrene 8-10 part of parts by weight, styrene-butadiene rubber(SBR) 1-1.5 part, polyamide resin 1.5-3 part, whipping agent 0.05-0.15 part, lubricant 0.05-0.3 part, dispersion agent 0.07-0.13 part; Its preparation method is added into successively in tempering tank by above-mentioned raw materials, and to adjust temperature be 40-60 DEG C, employing stirring speed is 70-80r/min stir process 3-7h, be placed on again temperature be 30-40 DEG C deposit process 1-3h, be 120-130r/min stir process 0.5-1h by its employing stirring speed again.
8. semi-hydrated gypsum base material imitated wood floor board as claimed in claim 1, it is characterized in that, described whipping agent is fluoro trichloromethane; Lubricant is tetrafluoroethylene; Dispersion agent is polyoxyethylene glycol.
9. the preparation method of the semi-hydrated gypsum base material imitated wood floor board as described in any one of claim 1-8, is characterized in that, comprise the following steps:
(1) by semi-hydrated gypsum, setting accelerator, fiber, cement adds in tempering tank successively, and the temperature adjusted in tempering tank is 40-60 DEG C, employing stirring speed is that 90-110r/min stirs, being placed on temperature is again in the environment of 45-55 DEG C, after ripening 2-5h, ball mill is adopted to carry out ball milling again, slurries can be obtained, and slurries are cast in floor mold, and together with mold movement on shaking table, vibrational frequency is adopted to be 60-80Hz vibration treatment 10-20min, being placed on temperature is again leave standstill in the environment of 40-50 DEG C to place 5-10min, remove mould, obtain base material just bad,
(2) by step 1) just bad to move to temperature be in the environment of 40-50 DEG C for the base material that obtains, place after 2-3 days, then adopted vapor temperature to be 50-56 DEG C, pressure is 1.5-1.7MPa, and steam press maintenance process 10-20s, can obtain base material;
(3) by step 2) base material that obtains adopts sand papering smooth, again the instillation of the half of imitative wooden coating is contained 5-7kg, temperature is in the dye cell of 40-50 DEG C of water, again base material is placed into dye cell, and dye cell is adopted to the stirring velocity stir process of 30-45r/min, after base material immersion reaches 1-3min, taken out and be placed in the environment that temperature is 40-55 DEG C, place 20-30min, other half is adopted to imitate wooden paint spay-coating on surface again, and adopted vapor temperature to be 30-45 DEG C, pressure is 1.3-1.45MPa steam press maintenance process 10-20s, semi-hydrated gypsum base material imitated wood floor board can be obtained.
10. the preparation method of semi-hydrated gypsum base material imitated wood floor board as claimed in claim 9, is characterized in that, what described spraying adopted is that dual nozzle spray gun spraying machine sprays, and the muzzle diameter of spray gun is 3-7mm.
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| 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 |
| CN112851278A (en) * | 2021-01-20 | 2021-05-28 | 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 |
| 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 |
| CN117735945A (en) * | 2024-02-19 | 2024-03-22 | 北京安科兴业科技股份有限公司 | Low-carbon gel material and preparation method thereof |
| 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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Effective date of registration: 20170515 Address after: Xifeng County in Guizhou Province, Guiyang city town 551109 Applicant after: Guizhou Kailin Phosphogypsum Utilization Co., Ltd. Address before: No. 237 Jinyang City Kailin Lake District Road 550009 Guizhou city of Guiyang Province Applicant before: Phosphorylcholine group limited-liability company is opened in Guizhou |
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