CN112209388A - Preparation method of novel white carbon black with high reinforcing capacity - Google Patents
Preparation method of novel white carbon black with high reinforcing capacity Download PDFInfo
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- CN112209388A CN112209388A CN202010898076.6A CN202010898076A CN112209388A CN 112209388 A CN112209388 A CN 112209388A CN 202010898076 A CN202010898076 A CN 202010898076A CN 112209388 A CN112209388 A CN 112209388A
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/02—Ingredients treated with inorganic substances
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/08—Ingredients agglomerated by treatment with a binding agent
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- 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
- C09C3/06—Treatment with inorganic compounds
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Abstract
The invention discloses a preparation method of novel white carbon black with high reinforcement capacity, wherein water glass is modified by hexamethyldisilazane and polyethylene glycol, so that the surface hydroxyl of the modified white carbon black is reduced, the surface is changed from hydrophilicity to hydrophobicity, the surface structure is looser, and the strength and the wear resistance of the white carbon black are improved; the addition of the surface modifier can enable the distribution of white carbon black particles to be more uniform, reduce agglomeration, increase the specific surface area and the number of pores of the white carbon black particles, inhibit the increase of the white carbon black particles and inhibit the agglomeration of the white carbon black particles, the prepared white carbon black ion surface is modified by using the ionic water and water emulsion mixture, and the white carbon black particles can be fully contacted with the modifier due to the increase of the specific surface area and the number of pores of the white carbon black particles, so that the surface of the white carbon black ions is fully modified, the reinforcing effect of the white carbon black is finally improved, the rolling resistance is reduced, better fuel oil saving is obtained, and the service life of the tread is prolonged.
Description
Technical Field
The invention relates to the technical field of white carbon black production, in particular to a preparation method of novel white carbon black with high reinforcing capacity.
Background
White carbon black is nano silicon dioxide, and the molecular formula is as follows: SiO 22·nH2O, because of its microstructure and aggregation morphology similar to carbon black and its similar reinforcing properties in rubber, is called white carbon. The method has the advantages of low price, energy conservation, environmental protection, good processing performance and the like. The white carbon black is applied to the tire tread, so that the rolling resistance of the tire can be reduced by about 30%, and meanwhile, the good wet skid resistance and the good wear resistance can be kept. Therefore, in recent years, tire manufacturers have gradually applied white carbon to replace carbon black. However, the surface of the white carbon black has a large amount of hydrophilic silicon hydroxyl groups, which are easy to absorb water and agglomerate, so that the compatibility and the dispersibility in a polymer matrix are poor, the comprehensive mechanical property of vulcanized rubber is greatly influenced, and the reinforcing property of the white carbon black is poor. Therefore, a proper modifier needs to be selected to perform surface modification on the white carbon black, so that the number of silicon hydroxyl groups on the surface of the white carbon black is reduced, and the reinforcing property of the white carbon black in the rubber tire is improved.
Disclosure of Invention
The invention aims to provide a preparation method of novel white carbon black with high reinforcing capacity, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of novel white carbon black with high reinforcing capacity comprises the following steps: the method comprises the following steps:
A) preparing raw materials:
step (1): adding solid sodium silicate and water into an alkali dissolving kettle, introducing steam into the alkali dissolving kettle, sealing the alkali dissolving kettle, and discharging to obtain a water glass solution with the concentration of 2.0-2.5 mol/L and the modulus of 2.5-3.5;
step (2): uniformly mixing 0.05-0.2 part by weight of sodium hydroxide, 0.05-0.2 part by weight of sodium salicylate and 5-10 parts by weight of deionized water, adding the mixture into a reaction kettle, and stirring for 30min to prepare an aqueous emulsion mixture;
and (3): preparing 10-25 parts by weight of natural latex, 30-60 parts by weight of divinyl pyridine, 15-40 parts by weight of natural latex, 100-400 parts by weight of deionized water and 5-15 parts by weight of ammonia water into deionized water;
B) preparing slurry:
and (4): introducing the water glass solution obtained in the step (1) into a reaction kettle, and controlling the water content of the water glass solution to be 80-90%;
and (5): introducing 3-4 parts by weight of hexamethyldisilazane and 6-7 parts by weight of polyethylene glycol into a mixing tank, uniformly mixing, and introducing into a reaction kettle;
and (6): introducing high-temperature steam into the reaction kettle in the step (4) until the temperature in the reaction kettle is raised to 90-95 ℃;
and (7): introducing dilute sulfuric acid with the mass fraction of 20-25% into the mixed solution in the reaction kettle for surface modification reaction until the reaction is finished;
and (8): the sulfuric acid with the concentration of 95-97% is used for 0.4800-0.670 m3Feeding the mixture into a reaction kettle at a flow speed of/h, and adjusting the pH value of the mixed solution to 3-5 to obtain white carbon black slurry;
C) atomizing and drying:
and (9): introducing the white carbon black slurry obtained in the step (8) into a filter press for filter pressing to obtain a white carbon black filter cake;
step (10): and (4) introducing the white carbon black filter cake obtained in the step (9) into a beater to beat the filter cake into suspension liquid drops, then conveying the suspension liquid drops into an atomizer at the top of the tower to atomize, heating by high-temperature gas, and then rapidly cooling to obtain solid powder after contacting with a fog drop group.
D) Surface strengthening:
step (11): and (4) adding the deionized water obtained in the step (3) into the solid powder obtained in the step (9) and uniformly mixing to obtain the white carbon black suspension.
Step (12): and (3) adding the water emulsion mixture obtained in the step (2) into the white carbon black suspension obtained in the step (11), and stirring to obtain a mixed solution.
Step (13): and (4) drying and crushing the mixed solution obtained in the step (12) to obtain the novel white carbon black with high reinforcing capacity.
Preferably, the drying and pulverizing process in the step (13) includes the steps of:
step (14): drying the mixed solution obtained in the step (12) to obtain mixed solution slurry;
step (15): introducing the mixed liquid slurry obtained in the step (14) into a filter press for filter pressing to obtain a mixed liquid slurry filter cake;
step (16): and (3) introducing the mixed liquid slurry filter cake obtained in the step (15) into a beater to beat the filter cake into suspension liquid drops, then conveying the suspension liquid drops into an atomizer at the top of the tower to atomize, heating by high-temperature gas, and then rapidly cooling after contacting with a fog drop group to obtain the novel white carbon black with high reinforcement capability.
Preferably, in the step (15), when the mixed solution slurry is subjected to filter pressing, the mixed solution slurry is washed with water and subjected to filter pressing.
Preferably, the drying temperature in the step (14) is 100 ℃ to 130 ℃, and the drying time is 4 hours.
Preferably, the drying is microwave drying.
Preferably, the drying is far infrared drying.
Compared with the prior art, the invention has the beneficial effects that: according to the preparation method of the novel white carbon black with high reinforcement capability, the sodium silicate is modified by hexamethyldisilazane and polyethylene glycol, the hydroxyl on the surface of the modified white carbon black is reduced, the surface is changed from hydrophilicity to hydrophobicity, the surface structure is looser, and the strength and the wear resistance of the white carbon black are improved; the addition of the surface modifier can enable the distribution of white carbon black particles to be more uniform, reduce agglomeration, increase the specific surface area and the number of pores of the white carbon black particles, inhibit the increase of the white carbon black particles and inhibit the agglomeration of the white carbon black particles, the prepared white carbon black ion surface is modified by using the ionic water and water emulsion mixture, and the white carbon black particles can be fully contacted with the modifier due to the increase of the specific surface area and the number of pores of the white carbon black particles, so that the surface of the white carbon black ions is fully modified, the reinforcing effect of the white carbon black is finally improved, the rolling resistance is reduced, better fuel oil saving is obtained, and the service life of the tread is prolonged.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Example 1
The invention provides a technical scheme that: one such method includes the steps of:
A) preparing raw materials:
step (1): adding solid sodium silicate and water into an alkali dissolving kettle, introducing steam into the alkali dissolving kettle, sealing the alkali dissolving kettle, and discharging to obtain a water glass solution with the concentration of 2.0-2.5 mol/L and the modulus of 2.5-3.5;
step (2): uniformly mixing 0.05-0.2 part by weight of sodium hydroxide, 0.05-0.2 part by weight of sodium salicylate and 5-10 parts by weight of deionized water, adding the mixture into a reaction kettle, and stirring for 30min to prepare an aqueous emulsion mixture;
and (3): preparing 10-25 parts by weight of natural latex, 30-60 parts by weight of divinyl pyridine, 15-40 parts by weight of natural latex, 100-400 parts by weight of deionized water and 5-15 parts by weight of ammonia water into deionized water;
B) preparing slurry:
and (4): introducing the water glass solution obtained in the step (1) into a reaction kettle, and controlling the water content of the water glass solution to be 80-90%;
and (5): introducing 3-4 parts by weight of hexamethyldisilazane and 6-7 parts by weight of polyethylene glycol into a mixing tank, uniformly mixing, and introducing into a reaction kettle;
and (6): introducing high-temperature steam into the reaction kettle in the step (4) until the temperature in the reaction kettle is raised to 90-95 ℃;
and (7): introducing dilute sulfuric acid with the mass fraction of 20-25% into the mixed solution in the reaction kettle for surface modification reaction until the reaction is finished;
and (8): the sulfuric acid with the concentration of 95-97% is used for 0.4800-0.670 m3Feeding the mixture into a reaction kettle at a flow speed of/h, and adjusting the pH value of the mixed solution to 3-5 to obtain white carbon black slurry;
C) atomizing and drying:
and (9): introducing the white carbon black slurry obtained in the step (8) into a filter press for filter pressing to obtain a white carbon black filter cake;
step (10): introducing the white carbon black filter cake obtained in the step (9) into a beater to beat the filter cake into suspension liquid drops, then conveying the suspension liquid drops into an atomizer at the top of the tower to atomize, heating by high-temperature gas, then rapidly cooling to obtain solid powder, and rapidly crystallizing to form ions by rapidly exchanging heat after the mist drop group contacts with the high-temperature gas;
D) surface strengthening:
step (11): and (3) adding the deionized water obtained in the step (3) into the solid powder obtained in the step (9) and uniformly mixing to obtain a white carbon black suspension, wherein the surface of the solid split body treated in the step (9) is changed from hydrophilicity to hydrophobicity, the surface structure is looser, the strength and the wear resistance of the white carbon black are improved, the white carbon black particles can be more uniformly distributed by adding the surface modifier, the agglomeration is reduced, and the specific surface area and the number of pores of the white carbon black particles are increased, so that the white carbon black particles can be fully dispersed in the deionized water.
Step (12): and (3) adding the water-emulsion mixture obtained in the step (2) into the white carbon black suspension obtained in the step (11), stirring to obtain a mixed solution, and fully mixing and contacting the treated solid components with the water-emulsion mixture by increasing the specific surface area and the number of pores.
Step (13): drying and crushing the mixed solution obtained in the step (12) to obtain the novel white carbon black with high reinforcement capability, modifying the surface of white carbon black particles by the water emulsion mixture to increase the physical properties of the white carbon black particles, and adding the white carbon black into rubber to prepare the tire through tests, so that the rolling resistance of the tire can be greatly reduced, and better fuel saving can be obtained.
Specifically, the drying and pulverizing step in step (13) includes the steps of:
step (14): drying the mixed solution obtained in the step (12) to obtain mixed solution slurry;
step (15): introducing the mixed liquid slurry obtained in the step (14) into a filter press for filter pressing to obtain a mixed liquid slurry filter cake;
step (16): and (3) introducing the mixed liquid slurry filter cake obtained in the step (15) into a beater to beat the filter cake into suspended liquid drops, then conveying the suspended liquid drops into an atomizer at the top of the tower to atomize, heating by high-temperature gas, and then rapidly cooling after contacting with a fog drop group to obtain the novel white carbon black with high reinforcement capacity.
Specifically, in the step (15), when the mixed liquid slurry is subjected to filter pressing, the mixed liquid slurry is washed by water for filter pressing, and during the filter pressing, the mixed liquid slurry is continuously washed by water, so that impurities such as the water emulsion mixed liquid on the surface of the white carbon black are washed, and the purity of the product is increased.
Specifically, the drying temperature in the step (14) is 100 ℃ to 130 ℃ and the drying time is 4 hours, so that a state of slurry is formed for subsequent filter pressing.
Specifically, the drying is microwave drying, which is different from the conventional drying method, and the heat conduction direction is the same as the moisture diffusion direction. Compared with the traditional drying mode, the drying device has the advantages of high drying speed, energy conservation, high production efficiency, uniform drying, clean production, easy realization of automatic control and improvement of product quality.
Example 2
The present embodiment is different from embodiment 1 in that: the drying is far infrared drying, which is to utilize the far infrared rays emitted by a far infrared radiation element to be absorbed by a heated substance to cause the molecules and atoms of the heated substance to vibrate, so that the temperature of an object is rapidly raised, and liquid molecules such as water and the like are driven out of the material to achieve the aim of drying.
Example 3
The present embodiment is different from embodiment 1 in that: A) preparing raw materials:
step (1): adding solid sodium silicate and water into an alkali dissolving kettle, introducing steam into the alkali dissolving kettle, sealing the alkali dissolving kettle, and discharging to obtain a water glass solution with the concentration of 2.0mol/L and the modulus of 3;
step (2): uniformly mixing 0.12 part by weight of sodium hydroxide, 0.1 part by weight of sodium salicylate and 5 parts by weight of deionized water, adding the mixture into a reaction kettle, and stirring for 30min to prepare an aqueous emulsion mixture;
and (3): preparing deionized water from natural latex 15, divinyl pyridine 40, natural latex 15, deionized water 300 and ammonia water 12 in parts by weight;
B) preparing slurry:
and (4): introducing the water glass solution obtained in the step (1) into a reaction kettle, and controlling the water content of the water glass solution to be 84%;
and (5): introducing 3.5 parts by weight of hexamethyldisilazane and 6.5 parts by weight of polyethylene glycol into a mixing tank, uniformly mixing, and introducing into a reaction kettle;
and (6): introducing high-temperature steam into the reaction kettle in the step (4) until the temperature in the reaction kettle is raised to 90 ℃;
and (7): introducing dilute sulfuric acid with the mass fraction of 20% into the mixed solution in the reaction kettle to carry out surface modification reaction until the reaction is finished;
and (8): sulfuric acid with a concentration of 97% at 0.5200m3Introducing the mixture into a reaction kettle at a flow speed of/h, and adjusting the pH value of the mixed solution to 4 to obtain white carbon black slurry;
C) atomizing and drying:
and (9): introducing the white carbon black slurry obtained in the step (8) into a filter press for filter pressing to obtain a white carbon black filter cake;
step (10): and (4) introducing the white carbon black filter cake obtained in the step (9) into a beater to beat the filter cake into suspension liquid drops, then conveying the suspension liquid drops into an atomizer at the top of the tower to atomize, heating by high-temperature gas, and then rapidly cooling to obtain solid powder after contacting with a fog drop group.
D) Surface strengthening:
step (11): and (4) adding the deionized water obtained in the step (3) into the solid powder obtained in the step (9) and uniformly mixing to obtain the white carbon black suspension.
Step (12): and (3) adding the water emulsion mixture obtained in the step (2) into the white carbon black suspension obtained in the step (11), and stirring to obtain a mixed solution.
Step (13): and (4) drying and crushing the mixed solution obtained in the step (12) to obtain the novel white carbon black with high reinforcing capacity.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A preparation method of novel white carbon black with high reinforcing capacity is characterized by comprising the following steps: the method comprises the following steps:
A) preparing raw materials:
step (1): adding solid sodium silicate and water into an alkali dissolving kettle, introducing steam into the alkali dissolving kettle, sealing the alkali dissolving kettle, and discharging to obtain a water glass solution with the concentration of 2.0-2.5 mol/L and the modulus of 2.5-3.5;
step (2): uniformly mixing 0.05-0.2 part by weight of sodium hydroxide, 0.05-0.2 part by weight of sodium salicylate and 5-10 parts by weight of deionized water, adding the mixture into a reaction kettle, and stirring for 30min to prepare an aqueous emulsion mixture;
and (3): preparing 10-25 parts by weight of natural latex, 30-60 parts by weight of divinyl pyridine, 15-40 parts by weight of natural latex, 100-400 parts by weight of deionized water and 5-15 parts by weight of ammonia water into deionized water;
B) preparing slurry:
and (4): introducing the water glass solution obtained in the step (1) into a reaction kettle, and controlling the water content of the water glass solution to be 80-90%;
and (5): introducing 3-4 parts by weight of hexamethyldisilazane and 6-7 parts by weight of polyethylene glycol into a mixing tank, uniformly mixing, and introducing into a reaction kettle;
and (6): introducing high-temperature steam into the reaction kettle in the step (4) until the temperature in the reaction kettle is raised to 90-95 ℃;
and (7): introducing dilute sulfuric acid with the mass fraction of 20-25% into the mixed solution in the reaction kettle for surface modification reaction until the reaction is finished;
and (8): the sulfuric acid with the concentration of 95-97% is used for 0.4800-0.670 m3Feeding the mixture into a reaction kettle at a flow speed of/h, and adjusting the pH value of the mixed solution to 3-5 to obtain white carbon black slurry;
C) atomizing and drying:
and (9): introducing the white carbon black slurry obtained in the step (8) into a filter press for filter pressing to obtain a white carbon black filter cake;
step (10): introducing the white carbon black filter cake obtained in the step (9) into a beater to beat the filter cake into suspension liquid drops, then conveying the suspension liquid drops into an atomizer at the top of the tower to atomize, heating by high-temperature gas, and rapidly cooling to obtain solid powder after contacting with a fog drop group;
D) surface strengthening:
step (11): adding the deionized water obtained in the step (3) into the solid powder obtained in the step (9) and uniformly mixing to obtain a white carbon black suspension;
step (12): adding the water emulsion mixture obtained in the step (2) into the white carbon black suspension obtained in the step (11), and stirring to obtain a mixed solution;
step (13): and (4) drying and crushing the mixed solution obtained in the step (12) to obtain the novel white carbon black with high reinforcing capacity.
2. The preparation method of the novel white carbon black with high reinforcing capacity according to claim 1, which is characterized by comprising the following steps: the drying and pulverizing process in step (13) includes the steps of:
step (14): drying the mixed solution obtained in the step (12) to obtain mixed solution slurry;
step (15): introducing the mixed liquid slurry obtained in the step (14) into a filter press for filter pressing to obtain a mixed liquid slurry filter cake;
step (16): and (3) introducing the mixed liquid slurry filter cake obtained in the step (15) into a beater to beat the filter cake into suspension liquid drops, then conveying the suspension liquid drops into an atomizer at the top of the tower to atomize, heating by high-temperature gas, and then rapidly cooling after contacting with a fog drop group to obtain the novel white carbon black with high reinforcement capability.
3. The preparation method of the novel white carbon black with high reinforcing capacity according to claim 2, which is characterized by comprising the following steps: and (15) flushing and filter pressing by using water when the mixed liquid slurry is subjected to filter pressing.
4. The preparation method of the novel white carbon black with high reinforcing capacity according to claim 2, which is characterized by comprising the following steps: the drying temperature in the step (14) is 100-130 ℃, and the drying time is 4 hours.
5. The preparation method of the novel white carbon black with high reinforcing capacity according to claim 4, which is characterized by comprising the following steps: the drying is microwave drying.
6. The preparation method of the novel white carbon black with high reinforcing capacity according to claim 4, which is characterized by comprising the following steps: the drying is far infrared drying.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108929462A (en) * | 2017-05-24 | 2018-12-04 | 田飞 | A kind of preparation method for rubber reinforcing filler white carbon black |
| CN109456508A (en) * | 2018-11-12 | 2019-03-12 | 浙江新纳材料科技有限公司 | A kind of preparation method of rubber high-reinforcement white carbon black |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108929462A (en) * | 2017-05-24 | 2018-12-04 | 田飞 | A kind of preparation method for rubber reinforcing filler white carbon black |
| CN109456508A (en) * | 2018-11-12 | 2019-03-12 | 浙江新纳材料科技有限公司 | A kind of preparation method of rubber high-reinforcement white carbon black |
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