CN110040738A - A kind of production method for processing green tire reinforcing agent sodium metasilicate - Google Patents
A kind of production method for processing green tire reinforcing agent sodium metasilicate Download PDFInfo
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- CN110040738A CN110040738A CN201910368881.5A CN201910368881A CN110040738A CN 110040738 A CN110040738 A CN 110040738A CN 201910368881 A CN201910368881 A CN 201910368881A CN 110040738 A CN110040738 A CN 110040738A
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- sodium metasilicate
- green tire
- production method
- reinforcing agent
- quartz sand
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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
- C01B33/20—Silicates
- C01B33/32—Alkali metal silicates
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
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- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Silicon Compounds (AREA)
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Abstract
The invention discloses a kind of production methods for processing green tire reinforcing agent sodium metasilicate, are related to sodium metasilicate processing technique field, comprising the following steps: (1) ingredient, (2) it mixes, (3) it roasts, (4) separation, (5) powder processed.Sodium metasilicate is made using quartz sand as raw material, by frit reaction with sodium carbonate in the present invention, and the control parameter of used production method is clear, good process repeatability, suitable for the mass production of sodium metasilicate, while the purity is high of made sodium metasilicate；And when preparing silica using made sodium metasilicate and sulfuric acid reaction, the partial size of nano silica obtained is small and good dispersion, be suitable as reinforcing agent and be dispersed in green tire process raw material in play excellent reinforcing effect.
Description
Technical field:
The present invention relates to sodium metasilicate processing technique fields, and in particular to a kind of processing green tire reinforcing agent sodium metasilicate
Production method.
Background technique:
Green tire refers to due to application plastics on new materials and design and causes rolling resistance small, thus oil consumption is low, exhaust gas discharge
Few radial.In running car, energy can be consumed by various resistances, wherein about 20% gasoline is rolled by tire
Resistance is consumed.The energy consumption of this respect can be reduced using green tire, to achieve the purpose that fuel-efficient.Using reinforcement
After agent is as filler, the rolling resistance of tire is available to be effectively reduced, and tire is made to have superior physical property, processability
Can, there are good dynamic characteristics when driving.
Silica belongs to tire and often uses reinforcing agent, can be made by waterglass (sodium metasilicate) and strong sulfuric acid response.Due to
The dispersibility and granularity of silica directly affect the reinforcing effect of reinforcing agent, and sodium metasilicate is used as the silicon of silica preparation
Source, therefore the production technology for controlling sodium metasilicate will directly affect the product quality of silica.
Patent CN 106976886A discloses a kind of preparation method of high dispersive silica sodium silicate solid, by pure
Alkali, quartz sand, aluminium oxide are made through 1450-1500 DEG C of high-temperature roasting.The patent prevents silica original using aluminium ion
The aggregation and agglomeration of particle keep finally formed silica ions looser to be more dispersible in rubber product.In order to
The dispersibility of the silica by sodium metasilicate preparation is further increased, the present invention provides a kind of processing green tire reinforcing agent use
The nano silica of polymolecularity can be made in the production method of sodium metasilicate, the sodium metasilicate obtained using the production method, and
And the process control parameter of the production method is clear, reproducible, the mass production suitable for sodium metasilicate.
Summary of the invention:
Technical problem to be solved by the present invention lies in provide a kind of production for processing green tire reinforcing agent sodium metasilicate
The nano silica of polymolecularity, and the production method can be made in method, the sodium metasilicate obtained using the production method
Process control parameter it is clear, reproducible, the mass production suitable for sodium metasilicate.
The following technical solution is employed for the technical problems to be solved by the invention to realize:
A kind of production method for processing green tire reinforcing agent sodium metasilicate, comprising the following steps:
(1) ingredient: quartz sand, sodium carbonate and dispersing agent are weighed respectively；
(2) it mixes: above-mentioned material being added in high-speed mixer, mixed at high speed；
(3) it roasts: mixed material being placed in heating melting in inert atmosphere and is reacted, constantly extracts generation in reaction process out
Carbon dioxide gas；
(4) it separates: product of roasting being added to the water, is filtered after ball milling, filtrate is taken；
(5) powder processed: being made lotion for gained concentrating filter liquor, and lotion is sent into baking oven, and dry obtained solid is through pulverizer
Powder is made.
The molar ratio of the quartz sand, sodium carbonate and dispersing agent is 1:1.1-1.2:0.01-0.05, the mole of quartz sand
With contained SiO2Meter.
The maturing temperature control is at 800~900 DEG C.
The dispersing agent selects titanate coupling agent.
The mechanism of action is as follows:
Using titanate coupling agent as dispersing agent, the uniform mixing of quartz sand and sodium carbonate, another party on the one hand can be promoted
Face titanate coupling agent under high-temperature roasting through decompose be changed into simple substance titanium, and in made sodium metasilicate titanium atom presence can by
Made sodium metasilicate prevents SiO when preparing reinforcing agent silica2The aggregation and reunion of predecessor, so that polymolecularity be made
Nano silica.
It, can be after step (4) separate in order to further improve the dispersibility of the silica as made from made sodium metasilicate
Rapid freezing processing is carried out to filtrate, it may be assumed that
A kind of production method for processing green tire reinforcing agent sodium metasilicate, comprising the following steps:
(1) ingredient: quartz sand, sodium carbonate and dispersing agent are weighed respectively；
(2) it mixes: above-mentioned material being added in high-speed mixer, mixed at high speed；
(3) it roasts: mixed material being placed in heating melting in inert atmosphere and is reacted, constantly extracts generation in reaction process out
Carbon dioxide gas；
(4) it separates: product of roasting being added to the water, is filtered after ball milling, filtrate is taken, stood after filtrate is heated to fluidized state
It is transferred in -10~-5 DEG C of environment, 20-25 DEG C of defrosting is heated to after rapid freezing processing, is filtered again after the completion of thawing, takes filter
Liquid；
(5) powder processed: being made lotion for gained concentrating filter liquor, and lotion is sent into baking oven, and dry obtained solid is through pulverizer
Powder is made.
Being handled using rapid freezing can be such that contained water-solubility impurity in filtrate is precipitated, to improve in made sodium metasilicate product
Na2SiO3Content；The Na when preparing silica is reduced simultaneously2SiO3With activation energy needed for sulfuric acid reaction, and then reduce it is made
The partial size of silica improves the dispersibility of silica.
In order to further improve the dispersibility of the silica as made from made sodium metasilicate, the dispersing agent can be selected
SnO2。
The mechanism of action is as follows:
SiO2+Na2CO3=Na2SiO3+CO2；
SnO2+Na2CO3=Na2SnO3+CO2；
SiO contained in quartz sand2It is reacted with sodium carbonate and generates Na2SiO3, while dispersing agent SnO2Life is reacted with sodium carbonate
At Na2SnO3, SnO in made sodium metasilicate3 2-Presence can prevent SiO when preparing reinforcing agent silica by made sodium metasilicate2
The aggregation and reunion of predecessor, so that the nano silica of polymolecularity be made.
The beneficial effects of the present invention are: the present invention using quartz sand as raw material, is made by the frit reaction with sodium carbonate
Sodium metasilicate, the control parameter of used production method is clear, good process repeatability, suitable for the mass production of sodium metasilicate,
The purity is high of made sodium metasilicate simultaneously；And when preparing silica using made sodium metasilicate and sulfuric acid reaction, nanometer two obtained
The partial size of silica is small and good dispersion, be suitable as reinforcing agent and be dispersed in green tire process raw material in play
Excellent reinforcing effect.
Specific embodiment:
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment is closed, the present invention is further explained.
Embodiment 1
(1) ingredient: weighing quartz sand, sodium carbonate and titanate coupling agent KH550 respectively, molar ratio 1:1.1:0.05,
The mole of quartz sand is with contained SiO2Meter, SiO2Quality be 10kg；
(2) it mixes: above-mentioned material being added in high-speed mixer, mixed at high speed 10min under 800r/min；
(3) it roasts: mixed material being placed in inert atmosphere heating melting and reacts 3h, 851 DEG C of temperature, in reaction process not
The carbon dioxide gas that disconnected extraction generates；
(4) it separates: product of roasting being added in 50kg water, is filtered after ball milling, takes filtrate；
(5) gained concentrating filter liquor: being made the lotion of solid content 85% by powder processed, and lotion is sent into baking oven, drying temperature
80 DEG C, powder is made through pulverizer in dry obtained solid.
Embodiment 2
It is control with embodiment 1, setting increases the embodiment 2 of rapid freezing processing, remaining operation and the complete phase of embodiment 1
Together.
(1) ingredient: weighing quartz sand, sodium carbonate and titanate coupling agent KH550 respectively, molar ratio 1:1.1:0.05,
The mole of quartz sand is with contained SiO2Meter, SiO2Quality be 10kg；
(2) it mixes: above-mentioned material being added in high-speed mixer, mixed at high speed 10min under 800r/min；
(3) it roasts: mixed material being placed in inert atmosphere heating melting and reacts 3h, 851 DEG C of temperature, in reaction process not
The carbon dioxide gas that disconnected extraction generates；
(4) it separates: product of roasting being added in 50kg water, is filtered after ball milling, takes filtrate, filtrate is heated to fluidized state
It is transferred to immediately in -10~-5 DEG C of environment afterwards, is heated to 20-25 DEG C of defrosting after rapid freezing processing 3h, mistake again of thawing after the completion
Filter, takes filtrate；
(5) gained concentrating filter liquor: being made the lotion of solid content 85% by powder processed, and lotion is sent into baking oven, drying temperature
80 DEG C, powder is made through pulverizer in dry obtained solid.
Embodiment 3
It is control with embodiment 1, is arranged with SnO2As the embodiment 3 of dispersing agent, remaining operation and the complete phase of embodiment 1
Together.
(1) ingredient: quartz sand, sodium carbonate and SnO are weighed respectively2, molar ratio 1:1.1:0.05, the mole of quartz sand
With contained SiO2Meter, SiO2Quality be 10kg；
(2) it mixes: above-mentioned material being added in high-speed mixer, mixed at high speed 10min under 800r/min；
(3) it roasts: mixed material being placed in inert atmosphere heating melting and reacts 3h, 851 DEG C of temperature, in reaction process not
The carbon dioxide gas that disconnected extraction generates；
(4) it separates: product of roasting being added in 50kg water, is filtered after ball milling, takes filtrate；
(5) gained concentrating filter liquor: being made the lotion of solid content 85% by powder processed, and lotion is sent into baking oven, drying temperature
80 DEG C, powder is made through pulverizer in dry obtained solid.
Embodiment 4
It is control with embodiment 3, setting increases the embodiment 4 of rapid freezing processing, remaining operation and the complete phase of embodiment 1
Together.
(1) ingredient: quartz sand, sodium carbonate and SnO are weighed respectively2, molar ratio 1:1.1:0.05, the mole of quartz sand
With contained SiO2Meter, SiO2Quality be 10kg；
(2) it mixes: above-mentioned material being added in high-speed mixer, mixed at high speed 10min under 800r/min；
(3) it roasts: mixed material being placed in inert atmosphere heating melting and reacts 3h, 851 DEG C of temperature, in reaction process not
The carbon dioxide gas that disconnected extraction generates；
(4) it separates: product of roasting being added in 50kg water, is filtered after ball milling, takes filtrate, filtrate is heated to fluidized state
It is transferred to immediately in -10~-5 DEG C of environment afterwards, is heated to 20-25 DEG C of defrosting after rapid freezing processing 3h, mistake again of thawing after the completion
Filter, takes filtrate；
(5) gained concentrating filter liquor: being made the lotion of solid content 85% by powder processed, and lotion is sent into baking oven, drying temperature
80 DEG C, powder is made through pulverizer in dry obtained solid.
Reference examples 1
It is control with embodiment 1, the reference examples 1 using aluminium oxide as dispersing agent is set, remaining operation and embodiment 1 is complete
It is identical.
(1) ingredient: quartz sand, sodium carbonate and aluminium oxide, molar ratio 1:1.1:0.05, mole of quartz sand are weighed respectively
Amount is with contained SiO2Meter, SiO2Quality be 10kg；
(2) it mixes: above-mentioned material being added in high-speed mixer, mixed at high speed 10min under 800r/min；
(3) it roasts: mixed material being placed in inert atmosphere heating melting and reacts 3h, 851 DEG C of temperature, in reaction process not
The carbon dioxide gas that disconnected extraction generates；
(4) it separates: product of roasting being added in 50kg water, is filtered after ball milling, takes filtrate；
(5) gained concentrating filter liquor: being made the lotion of solid content 85% by powder processed, and lotion is sent into baking oven, drying temperature
80 DEG C, powder is made through pulverizer in dry obtained solid.
Reference examples 2
It is control with embodiment 1, the reference examples 2 of dispersing agent are not added in setting, remaining operation is identical with embodiment 1.
(1) ingredient: quartz sand and sodium carbonate are weighed respectively, molar ratio 1:1.1, the mole of quartz sand is with contained SiO2
Meter, SiO2Quality be 10kg；
(2) it mixes: above-mentioned material being added in high-speed mixer, mixed at high speed 10min under 800r/min；
(3) it roasts: mixed material being placed in inert atmosphere heating melting and reacts 3h, 851 DEG C of temperature, in reaction process not
The carbon dioxide gas that disconnected extraction generates；
(4) it separates: product of roasting being added in 50kg water, is filtered after ball milling, takes filtrate；
(5) gained concentrating filter liquor: being made the lotion of solid content 85% by powder processed, and lotion is sent into baking oven, drying temperature
80 DEG C, powder is made through pulverizer in dry obtained solid.
Embodiment 1, embodiment 2, embodiment 3, embodiment 4, reference examples 1, reference examples 2 are utilized respectively to be added by criticizing quartz sand together
Work prepares sodium metasilicate, made sodium metasilicate powder is crossed 200 meshes, and prepare nano silica by the following method:
(1) sodium metasilicate is added to the sodium silicate solution of water compound concentration 1mol/L, and adds the surfactant carboxylic of 0.2wt%
Methylcellulose sodium solution；
(2) sulfuric acid solution of compound concentration 0.75mol/L；
(3) into step (1) acquired solution a dropping step (2) sulfuric acid solution, at 70 DEG C react 3h generate dioxy
SiClx precipitating, then through aging, be filtered, washed, dry, crush, obtain nanometer silicon dioxide particle.
Measure the partial size of made nanometer silicon dioxide particle, and take the made nanometer silicon dioxide particle of 20g be added 80g go from
In sub- water, high-speed stirred 2h obtains dispersion liquid under 800r/min, made dispersion liquid is placed 12 months, respectively at 6 months, 9
The moon and 12 months record the state of dispersion liquid, and measurement result is as shown in table 1.
Table 1
As shown in Table 1, embodiment can reduce made nanometer titanium dioxide by the use of dispersing agent and rapid freezing processing
The partial size of silicon particle, while improving the uniformly dispersed and dispersion stabilization of made nanometer silicon dioxide particle.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of production method for processing green tire reinforcing agent sodium metasilicate, it is characterised in that: the following steps are included:
(1) ingredient: quartz sand, sodium carbonate and dispersing agent are weighed respectively；
(2) it mixes: above-mentioned material being added in high-speed mixer, mixed at high speed；
(3) it roasts: mixed material being placed in heating melting in inert atmosphere and is reacted, constantly extracts the dioxy of generation in reaction process out
Change carbon gas；
(4) it separates: product of roasting being added to the water, is filtered after ball milling, filtrate is taken；
(5) powder processed: being made lotion for gained concentrating filter liquor, and lotion is sent into baking oven, and dry obtained solid is made through pulverizer
Powder.
2. the production method of processing green tire reinforcing agent sodium metasilicate according to claim 1, it is characterised in that: described
The molar ratio of quartz sand, sodium carbonate and dispersing agent is 1:1.1-1.2:0.01-0.05, and the mole of quartz sand is with contained SiO2
Meter.
3. the production method of processing green tire reinforcing agent sodium metasilicate according to claim 1, it is characterised in that: described
Maturing temperature is controlled at 800~900 DEG C.
4. the production method of processing green tire reinforcing agent sodium metasilicate according to claim 1, it is characterised in that: described
Dispersing agent selects titanate coupling agent.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111620348A (en) * | 2020-06-22 | 2020-09-04 | 安徽龙泉硅材料有限公司 | Preparation method of sodium silicate for nano silicon dioxide |
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| CN109264731A (en) * | 2018-09-19 | 2019-01-25 | 安徽龙泉硅材料有限公司 | The ultrapure sodium metasilicate of high-temperature silicon disulfide rubber reinforcing agent |
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2019
- 2019-05-05 CN CN201910368881.5A patent/CN110040738A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5589265A (en) * | 1994-01-18 | 1996-12-31 | Hoechst Aktiengesellschaft | Aromatic polyamide staple fiber bundles of improved dispersibility in viscous matrices and production of fiber-reinforced composites |
| CN103787347A (en) * | 2012-11-02 | 2014-05-14 | 岳阳恒忠新材料有限公司 | Process for producing liquid high-modulus water glass by combination of dry method and wet method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111620348A (en) * | 2020-06-22 | 2020-09-04 | 安徽龙泉硅材料有限公司 | Preparation method of sodium silicate for nano silicon dioxide |
| CN111620348B (en) * | 2020-06-22 | 2022-11-22 | 安徽龙泉硅材料有限公司 | Preparation method of sodium silicate for nano silicon dioxide |
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Application publication date: 20190723 |