CN106433224A - Method for preparing black talc powder for wood-plastic composite material - Google Patents
Method for preparing black talc powder for wood-plastic composite material Download PDFInfo
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- CN106433224A CN106433224A CN201610694856.2A CN201610694856A CN106433224A CN 106433224 A CN106433224 A CN 106433224A CN 201610694856 A CN201610694856 A CN 201610694856A CN 106433224 A CN106433224 A CN 106433224A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/28—Compounds of silicon
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/006—Combinations of treatments provided for in groups C09C3/04 - C09C3/12
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/22—Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability
Abstract
The invention provides a method for preparing black talc powder for a wood-plastic composite material. The method comprises the steps: (1) preparing 70% to 75% slurry from black talc powder with the particle size of 400 to 600 meshes, and adding a dispersant, which at least contains polyacrylamide and a vinyl acetate-maleic anhydride copolymer sodium salt, into the slurry; (2) carrying out wet grinding, so as to obtain slurry with the particle size of 3,000 meshes; (3) carrying out flash-evaporation drying, and collecting dried powder; (4) feeding the dried powder to a disaggregation scattering machine, so as to obtain disaggregated powder; and (5) feeding the disaggregated powder to a surface modifier, adding a composite modifying agent into the surface modifier, and carrying out coating treatment, thereby obtaining a final product, wherein the composite modifying agent at least contains a silane coupling agent, a rare-earth coupling agent, refined coconut oil and a fatty-acid polyvinyl ether non-ionic surfactant. According to the method, the black talc powder can be directly processed and used in the wood-plastic composite material, so that the mechanical properties of the wood-plastic composite material are improved, the water absorption rate is lowered, the thermal contraction performance is lowered, and the processing cost is reduced.
Description
【Technical field】
The present invention relates to technical field of fine, more particularly, to a kind of wood plastic composite preparation side of black talc powder
Method.
【Background technology】
Black talc is the general designation to black, grey black Talcum, due to including organic matter so its outward appearance is in black.Black talc
In essential mineral be Talcum, its content be more than 92%, in addition the quartz containing 5% about and 2% about organic matter.Black
Pulvis Talci is a kind of magnesium silicate minerals, its stable chemical nature, and acid and alkali-resistance corrodes, further, since Pulvis Talci has special layer
Shape, laminated structure, are filled in and can significantly increase the rigidity of product, creep resistance, impact strength, hardness, anti-in plastic
Surface tear, thermostability etc., thus be widely used in and mould the fields such as wood, cable, rubber.
China's black talc resource very abundant.What China's black talc reserves were larger has Liaoning, Shandong, Guangxi, Jiangxi, Qinghai
Five provinces, have more than the 90% of national Talcum reserves, the Talcum resource in Jiangxi is mainly black talc, according to geology information calculation,
The domestic black talc ore body in Jiangxi Shangrao Guangfeng County discontinuously extends 20 kilometers, proved reserves more than 1,000,000,000 tons, wherein black talc mine
Middle silicon, content of magnesium respectively reach 66%, 30%, are domestic rare high-grade Talc Ores.
It is although China's black talc rich reserves, best in quality, because its natural whiteness is 50% about, even lower,
This significantly limits the extensive application of black talc.At present, great majority are in order to expand the application of black talc, Zhi Nengtong
Cross and it is carried out with calcining its whiteness of raising, obtain high white superfine Pulvis Talci after grinding through super-refinement, such mineral resources
Utilization rate is low, using cost big it is impossible to effectively utilizes.
【Content of the invention】
In order to solve application in wood plastic composite for the black talc, the invention provides providing a kind of wood plastic composite
With the preparation method of black talc powder, the directly processing use in wood plastic composite of black talc powder can be made.
The technical scheme is that：
A kind of preparation method of wood plastic composite black talc powder is it is characterised in that comprise the following steps：
(1) prepare slurry：The black talc powder body of 400～600 mesh is become solid content to be 70 with the solution of dispersant
～80% slurry, described dispersant includes at least polyacrylic acid amine dispersant and vinyl acetate-copolymer-maleic anhydride sodium
Dipersant；Polyacrylic acid amine dispersant is a kind of dispersant of water-based system, has a good resistance to water, vinyl acetate-
Copolymer-maleic anhydride sodium salt dispersant is also water-based system dispersant, uses cooperatively and can obtain with polyacrylic acid amine dispersant
Preferably dispersion effect.
(2) wet grinding：The slurry that step (1) is obtained carries out wet grinding, obtains the slurry of 3000～4000 mesh；
(3) it is dried and collect：It is less than 3% through the slurry drying that step (2) obtains to water content, collect and powder body is dried；
(4) depolymerization is broken up：The powder body entrance Depolymerizing thrasher that is dried that step (3) is obtained is broken up, and makes the powder of reunion
Body is dismissed, and obtains depolymerization powder body；
(5) modification：The depolymerization powder body that step (4) is obtained enters surface modification machine, adds composite modifier, carries out
Parcel is processed, until encapsulation ratio reaches more than 98%, obtain final product；Described composite modifier include at least silane coupler,
Rare-earth coupling agent, Oleum Cocois and fatty acid polyethylene ether nonionic surfactant.
Wood plastic composite is with timber as primary raw material, makes it from various plastics by different through suitable process
The high-performance of complex method generation, the advanced composite material (ACM) of high added value.In wood plastic composite, black talc powder can be direct
Processing uses, and is ground by super-refinement, is carrying out surface modification to black talc powder, the not only processing characteristics to wood plastic composite
Do not affect, and the mechanical property of wood plastic composite can also be improved, reduce the water absorption rate of wood plastic composite, reduce wood moulding
The thermal contraction performance of composite, reduces processing cost.
Further, in above-mentioned steps (1), the black talc powder body of 400～600 mesh is obtained by following steps：
(A) primary fragmentation：By black talc raw ore through coarse crushing, cleaning, primary fragmentation, obtain the former of a diameter of 5-10cm
Ore deposit；
(B) second-time breakage：The raw ore of the diameter 5-10cm that step (A) is obtained, puts in feed bin and carries out second-time breakage, obtain
Material to a diameter of 5-10mm；
(C) dry grinding：The material that step (B) is obtained carries out adding triethanolamine grinding aid, carries out dry grinding, obtains
Black talc powder body to 400～600 mesh.
Further, the addition of above-mentioned polyacrylic acid amine dispersant is 5～the 7 ‰ of powder quality.
Further, the addition of above-mentioned vinyl acetate-copolymer-maleic anhydride sodium salt dispersant is the 3 of powder quality
～5 ‰.
Further, the addition of above-mentioned silane coupler is 5～the 7 ‰ of powder quality.
Further, the addition of above-mentioned rare-earth coupling agent is 1～the 3 ‰ of powder quality.
Further, the addition of above-mentioned Oleum Cocois is 5～the 7 ‰ of powder quality.Oleum Cocois according to its processing method and
The Cortex cocois radiciss quality using is different, and is divided into and just squeezes Oleum Cocois and refined coconut oil.Refined coconut oil impurity is few, refined coconut oil,
Have passed through deep processing.First want high temperature refinery, then decolour, de- taste, refined coconut oil can reduce cunning to Pulvis Talci modification
The oil absorption of stone powder, good to powder dispersity, there is good lubricity.
Further, the addition of above-mentioned fatty acid polyethylene ether nonionic surfactant be powder quality 3～
5‰.Fatty acid polyethylene ether nonionic surfactant has dispersibility and Viscosity-reducing, and appropriate interpolation can be right further
Black talc is modified, and is allowed to be applied to wood plastic composite field.
Further, the slurry temperature of above-mentioned steps (2) is 70～80 DEG C, is conducive to the effect of various modifying agent and dispersant
The giving full play to of fruit.
Further, the abrasive media that above-mentioned steps (2) adopt is microspheroidal zirconium oxide.
The present invention has following beneficial technique effect：
1) present invention carries out wet grinding super-refinement to black talc powder, black talc powder body is carried out at surface modification simultaneously
Reason, enables black talc powder to make the directly processing use in wood plastic composite of black talc powder；Black talc is in stratiform, lamellar knot Structure, is filled in and plays " skeleton " effect inside material, so the mechanical property of wood plastic composite can be improved, simultaneously because wood powder
Water absorption rate be more than inorganic particle, with the increase of inorganic powder filled amount, wood powder relative amount reduces, and water absorption rate is also with fall
Low, therefore, the modified black talc powder of the present invention plays good filler reinforcement effect in wood plastic composite, canImprove The mechanical property of wood plastic composite, reduces the water absorption rate of wood plastic composite, reduces the thermal contraction performance of wood plastic composite, Reduce processing cost.
2) present invention passes through wet grinding super fine powder processing technique, powder granule can be ground to more than 3000 mesh,
BET specific surface area is more than or equal to 6m2/ g, can play strengthening action in wood plastic composite.
3) present invention employs the technique that depolymerization is broken up in production technology, and powder body is effectively disperseed, and maintains
The particle diameter of primary partical, improves the dispersibility of powder body.
4) present invention, after depolymerization is broken up, is modified to powder surface using composite modified technique, the activation of product
Degree is more than 98%；The surface active degree of powder body material is higher, and dispersibility and mobility are also better, and oil absorption is also reduced, with
The compatibility of substrate resin is also better.
【Brief description】
Fig. 1 is the schematic flow sheet of the present invention；
Fig. 2 is the stereoscan photograph of 5000 times of the product amplification of embodiment one.
【Specific embodiment】
Below in conjunction with specific embodiment, the present invention is described further.
Embodiment provided below simultaneously is not used to limit the scope that the present invention is covered, and described step is not to use
To limit its execution sequence.Those skilled in the art do conspicuously improved with reference to existing common knowledge to the present invention, also fall
Enter within the protection domain of application claims.
Embodiment one
A kind of preparation method of wood plastic composite black talc powder is it is characterised in that comprise the following steps：
(1) prepare slurry：Black talc powder and water are made into the slurry that solid content is 70%, are subsequently adding dispersant, described
Dispersant is polyacrylic acid amine dispersant and the 3 ‰ vinyl acetates-copolymer-maleic anhydride sodium salt dispersion of powder quality 5 ‰
Agent, is uniformly dispersed.
(2) wet grinding：The slurry obtaining is 2500r/min in vertical mixer rotating speed, stirs 2 hours, vertical stir
The microspheroidal hole zirconium oxide mixing addition speciality in mill is abrasive media, and the Mohs' hardness of abrasive media is 8, a diameter of 3mm.Stirring
Control slurry temperature in process of lapping between 70-80 DEG C, be allowed to full and uniform mixing, the slurry of 3000 mesh is finally obtained.
(3) it is dried and collect：Slurry after stirring reaction is pumped into rapid flash drying machine, is carried out using clean hot-air
Expansion drying；Will warm up the annular space that 400 DEG C of hot-air is entered hothouse bottom by inlet tube with tangential direction, and helical form
Rise, meanwhile, 3000 mesh slurries after agitation grinding are quantitatively adding in tower by feeder, and carry out fully hot friendship with hot-air
Change, make slurry wink-dry, will collect through cloth bag through dried powder body.By be dried powder body by breaing up to powder body depolymerization after
Obtain the powder body of 3000 mesh.
(4) depolymerization is broken up：Powder body after collecting is entered Depolymerizing thrasher through spiral reamer feeder, destroys due to particle
Reunion, keep primary partical particle diameter.
(5) modification：Powder body after depolymerization is broken up enters surface modification machine through spiral reamer feeder, is separately added into
The composite modifier of certain powder quality ratio, reduces the oil absorption of powder body, improves the compatibility of itself and resin.Described composite modified
Agent is the silane coupler of powder quality 5 ‰, 1 ‰ rare-earth coupling agent, 5 ‰ refined coconut oil, 3 ‰ fatty acid polyethylene
Ether nonionic surfactant.
Powder body after high-speed stirred is packed after terminating by modification through automatic packaging machine, obtains finished product, and it amplifies 5000 times
Stereoscan photograph is as shown in Figure 2.
Embodiment two
A kind of preparation method of wood plastic composite black talc powder is it is characterised in that comprise the following steps：
(1) prepare slurry：Black talc powder and water are made into the slurry that solid content is 75%, are subsequently adding dispersant, described
Dispersant is polyacrylic acid amine dispersant and the 4 ‰ vinyl acetates-copolymer-maleic anhydride sodium salt dispersion of powder quality 6 ‰
Agent, is uniformly dispersed.
(2) wet grinding：The slurry obtaining is 2500r/min in vertical mixer rotating speed, stirs 2 hours, vertical stir
The microspheroidal hole zirconium oxide mixing addition speciality in mill is abrasive media, and the Mohs' hardness of abrasive media is 8, a diameter of 3mm.Stirring
Control slurry temperature in process of lapping between 70-80 DEG C, be allowed to full and uniform mixing, the slurry of 3500 mesh is finally obtained.
(3) it is dried and collect：Slurry after stirring reaction is pumped into rapid flash drying machine, is carried out using clean hot-air
Expansion drying；Will warm up the annular space that 400 DEG C of hot-air is entered hothouse bottom by inlet tube with tangential direction, and helical form
Rise, meanwhile, 3500 mesh slurries after agitation grinding are quantitatively adding in tower by feeder, and carry out fully hot friendship with hot-air
Change, make slurry wink-dry, will collect through cloth bag through dried powder body.Powder body will be dried by breaing up to powder body depolymerization
Obtain the powder body of 3500 mesh afterwards.
(4) depolymerization is broken up：Powder body after collecting is entered Depolymerizing thrasher through spiral reamer feeder, destroys due to particle
Reunion, keep primary partical particle diameter.
(5) modification：Powder body after depolymerization is broken up enters surface modification machine through spiral reamer feeder, is separately added into
The composite modifier of certain powder quality ratio, reduces the oil absorption of powder body, improves the compatibility of itself and resin.Described composite modified
Agent is the silane coupler of powder quality 6 ‰, 2 ‰ rare-earth coupling agent, 6 ‰ refined coconut oil, 4 ‰ fatty acid polyethylene
Ether nonionic surfactant.
Powder body after high-speed stirred is packed after terminating by modification through automatic packaging machine, obtains finished product.
Embodiment three
A kind of preparation method of wood plastic composite black talc powder is it is characterised in that comprise the following steps：
(1) prepare slurry：Black talc powder and water are made into the slurry that solid content is 80%, are subsequently adding dispersant, described
Dispersant is polyacrylic acid amine dispersant and the 5 ‰ vinyl acetates-copolymer-maleic anhydride sodium salt dispersion of powder quality 7 ‰
Agent, is uniformly dispersed.
(2) wet grinding：The slurry obtaining is 2500r/min in vertical mixer rotating speed, stirs 2 hours, vertical stir
The microspheroidal hole zirconium oxide mixing addition speciality in mill is abrasive media, and the Mohs' hardness of abrasive media is 8, a diameter of 3mm.Stirring
Control slurry temperature in process of lapping between 70-80 DEG C, be allowed to full and uniform mixing, the slurry of 4000 mesh is finally obtained.
(3) it is dried and collect：Slurry after stirring reaction is pumped into rapid flash drying machine, is carried out using clean hot-air
Expansion drying；Will warm up the annular space that 400 DEG C of hot-air is entered hothouse bottom by inlet tube with tangential direction, and helical form
Rise, meanwhile, 4000 mesh slurries after agitation grinding are quantitatively adding in tower by feeder, and carry out fully hot friendship with hot-air
Change, make slurry wink-dry, will collect through cloth bag through dried powder body.By be dried powder body by breaing up to powder body depolymerization after
Obtain the powder body of 4000 mesh.
(4) depolymerization is broken up：Powder body after collecting is entered Depolymerizing thrasher through spiral reamer feeder, destroys due to particle
Reunion, keep primary partical particle diameter.
(5) modification：Powder body after depolymerization is broken up enters surface modification machine through spiral reamer feeder, is separately added into
The composite modifier of certain powder quality ratio, reduces the oil absorption of powder body, improves the compatibility of itself and resin.Described composite modified
Agent is the silane coupler of powder quality 7 ‰, 3 ‰ rare-earth coupling agent, 7 ‰ refined coconut oil, 5 ‰ fatty acid polyethylene
Ether nonionic surfactant.
Powder body after high-speed stirred is packed after terminating by modification through automatic packaging machine, obtains finished product.
The partial detection of above example one, two, three products obtained therefrom is as shown in the table：
Claims (10)
1. a kind of preparation method of wood plastic composite black talc powder is it is characterised in that comprise the following steps：
(1) prepare slurry：The black talc powder body of 400～600 mesh is become with the solution of dispersant solid content be 70～
80% slurry, described dispersant includes at least polyacrylic acid amine dispersant and vinyl acetate-copolymer-maleic anhydride sodium salt
Dispersant；
(2) wet grinding：The slurry that step (1) is obtained carries out wet grinding, obtains the slurry of 3000～4000 mesh；
(3) it is dried and collect：It is less than 3% through the slurry drying that step (2) obtains to water content, collect and powder body is dried；
(4) depolymerization is broken up：The powder body entrance Depolymerizing thrasher that is dried that step (3) is obtained is broken up, and obtains depolymerization powder body；
(5) modification：The depolymerization powder body that step (4) is obtained enters surface modification machine, adds composite modifier, is wrapped up
Process, obtain final product；Described composite modifier includes at least silane coupler, rare-earth coupling agent, Oleum Cocois and fatty acid
Polyethylene ether nonionics type surfactant.
2. wood plastic composite according to claim 1 with the preparation method of black talc powder it is characterised in that described step
(1) in, the black talc powder body of 400～600 mesh is obtained by following steps：
(A) primary fragmentation：By black talc raw ore through coarse crushing, cleaning, primary fragmentation, obtain the raw ore of a diameter of 5-10cm；
(B) second-time breakage：The raw ore of the diameter 5-10cm that step (A) is obtained, puts in feed bin and carries out second-time breakage, obtains straight
Footpath is the material of 5-10mm；
(C) dry grinding：The material that step (B) is obtained carries out adding triethanolamine grinding aid, carries out dry grinding, obtains
The black talc powder body of 400～600 mesh.
3. wood plastic composite according to claim 1 with the preparation method of black talc powder it is characterised in that described poly- third
The addition of olefin(e) acid amine dispersant is 5～the 7 ‰ of powder quality.
4. wood plastic composite according to claim 1 with the preparation method of black talc powder it is characterised in that described acetic acid
The addition of vinyl acetate-copolymer-maleic anhydride sodium salt dispersant is 3～the 5 ‰ of powder quality.
5. wood plastic composite according to claim 1 with the preparation method of black talc powder it is characterised in that described silane
The addition of coupling agent is 5～the 7 ‰ of powder quality.
6. wood plastic composite according to claim 1 with the preparation method of black talc powder it is characterised in that described rare earth
The addition of coupling agent is 1～the 3 ‰ of powder quality.
7. wood plastic composite according to claim 1 with the preparation method of black talc powder it is characterised in that described Cortex cocois radiciss
The addition of oil is 5～the 7 ‰ of powder quality.
8. wood plastic composite according to claim 1 with the preparation method of black talc powder it is characterised in that described silane
The addition of coupling agent fatty acid polyethylene ether nonionic surfactant is 3～the 5 ‰ of powder quality.
9. wood plastic composite according to claim 1 with the preparation method of black talc powder it is characterised in that described step
(2) slurry temperature is 70～80 DEG C.
10. wood plastic composite according to claim 1 with the preparation method of black talc powder it is characterised in that described step
Suddenly the abrasive media that (2) adopt is microspheroidal zirconium oxide.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108311270A (en) * | 2018-01-22 | 2018-07-24 | 张藜泷 | A kind of Khotan jade superfine powder and preparation method thereof |
| CN108752979A (en) * | 2018-05-10 | 2018-11-06 | 桂林永福恒达实业有限公司 | A kind of method that wet method prepares super fine calcium carbonate |
| CN111004527A (en) * | 2019-11-18 | 2020-04-14 | 湖南鑫天源新材料有限公司 | Method for preparing air inhibitor for tire inner liner by using black talc as raw material |
| CN111748221A (en) * | 2020-07-07 | 2020-10-09 | 山东齐润源新材料科技有限公司 | Talcum powder granulation method |
| CN112442289A (en) * | 2020-11-10 | 2021-03-05 | 桂林桂广申巴粉体材料有限责任公司 | Modified talcum powder, and preparation method and application thereof |
| CN113122023A (en) * | 2021-04-20 | 2021-07-16 | 湖南鑫天源新材料有限公司 | Method for preparing pigment and filler for composite material by using black talc |
| CN114288985A (en) * | 2021-12-29 | 2022-04-08 | 浙江工业大学 | Black talc adsorption material and preparation method and application thereof |
| CN114381036A (en) * | 2020-07-23 | 2022-04-22 | 江西广源化工有限责任公司 | Plastic product and preparation method thereof |
| WO2022233034A1 (en) * | 2021-05-07 | 2022-11-10 | 德州学院 | Method for preparing composite pigment filler for coatings by using coal gasification slag |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108311270A (en) * | 2018-01-22 | 2018-07-24 | 张藜泷 | A kind of Khotan jade superfine powder and preparation method thereof |
| CN108311270B (en) * | 2018-01-22 | 2019-12-27 | 张藜泷 | Hetian jade superfine powder and preparation method thereof |
| CN108752979A (en) * | 2018-05-10 | 2018-11-06 | 桂林永福恒达实业有限公司 | A kind of method that wet method prepares super fine calcium carbonate |
| CN111004527A (en) * | 2019-11-18 | 2020-04-14 | 湖南鑫天源新材料有限公司 | Method for preparing air inhibitor for tire inner liner by using black talc as raw material |
| CN111748221A (en) * | 2020-07-07 | 2020-10-09 | 山东齐润源新材料科技有限公司 | Talcum powder granulation method |
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| CN112442289A (en) * | 2020-11-10 | 2021-03-05 | 桂林桂广申巴粉体材料有限责任公司 | Modified talcum powder, and preparation method and application thereof |
| CN112442289B (en) * | 2020-11-10 | 2021-09-14 | 桂林桂广申巴粉体材料有限责任公司 | Modified talcum powder, and preparation method and application thereof |
| CN113122023A (en) * | 2021-04-20 | 2021-07-16 | 湖南鑫天源新材料有限公司 | Method for preparing pigment and filler for composite material by using black talc |
| WO2022233034A1 (en) * | 2021-05-07 | 2022-11-10 | 德州学院 | Method for preparing composite pigment filler for coatings by using coal gasification slag |
| CN114288985A (en) * | 2021-12-29 | 2022-04-08 | 浙江工业大学 | Black talc adsorption material and preparation method and application thereof |
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Application publication date: 20170222 |