CN106928753A - A kind of preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates - Google Patents
A kind of preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates Download PDFInfo
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- CN106928753A CN106928753A CN201710156393.9A CN201710156393A CN106928753A CN 106928753 A CN106928753 A CN 106928753A CN 201710156393 A CN201710156393 A CN 201710156393A CN 106928753 A CN106928753 A CN 106928753A
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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
- C09C1/02—Compounds of alkaline earth metals or magnesium
- C09C1/021—Calcium carbonates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
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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
- C09C3/08—Treatment with low-molecular-weight non-polymer organic compounds
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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
- C09C3/10—Treatment with macromolecular organic compounds
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/04—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C09D127/06—Homopolymers or copolymers of vinyl chloride
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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
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The invention discloses a kind of preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates, stirred in the calcium hydroxide suspension that mass concentration is 10~20% and add polyacrylic acid Sodium Polyacrylate, stir 20~30min in room temperature~100 DEG C, then the gas containing carbon dioxide is passed through with the speed of 10~40L/h, continue stirring reaction to pH=7.0~7.5, stop heating, be subsequently added into polyacrylic acid Sodium Polyacrylate, continue to stir 30~50min, obtain calcium carbonate serosity；Calcium carbonate serosity is separated, liquids recovery is used for the configuration of calcium hydroxide, solid is crushed by drying, and packaging obtains final product modified calcium carbonate micro mist.This method controls the pattern of calcium carbonate and is modified simultaneously using low-molecular-weight polypropylene acid Sodium Polyacrylate, obtain bar-shaped calcium carbonate fine powder and be applied to PVC automobile chassis stone-impact-proof paints, PVC plasticized pastes can be assigned has the performances such as good thixotropy, yield value, viscosity, method is simple, and production efficiency is high, low cost.
Description
Technical field
It is specifically a kind of to be used for PVC automobile chassis stone-impact-proof paint carbon modifieds the present invention relates to technical field of inorganic material
The preparation method of sour calcium.
Background technology
Nanometer/calcium carbonate superfine powder is widely used in the industry-by-industries such as rubber, papermaking, coating, medicine, cosmetics and portion
Door, different industries are different to the requirement such as the form of calcium carbonate, particle diameter and surface nature.Therefore synthesis pattern, structure-controllable are received
Rice calcium carbonate material is one of focus of calcium carbonate industry research, at present, by means of various chemical additives, is synthesized using solution
Method prepared the nano-calcium carbonate of form, size and structure-controllable, wherein being prepared for by changing template, additive
The spherical vaterite calcium carbonate of various patterns, size and crystal formation, round pie vaterite-type calcium carbonate, spindle, spherical and needle-like
Calcite type calcium carbonate etc..And in order to strengthen application performance of the calcium carbonate in plastics, rubber, coating, using various modifying agent
Such as surfactant, silane, esters, copolymer, the inorganic matter research modified to its there has also been report.On the whole, it is first
Different-shape, granular size and the calcium carbonate of crystal formation are prepared by adding pattern controlling agent, then using without modifying agent pair
It is modified, that is to say, that pattern is controlled and modified substep is carried out, and pattern controlling agent and modifying agent are two kinds of not jljls
Matter.
In terms of the preparation of bar-shaped calcium carbonate, existing patent and article are reported.A kind of rods of Chinese patent CN 103253693A
The preparation method of shape calcite type calcium carbonate crystal, is related to the preparation method of calcium carbonate crystal：First, by Ca (OH)2Solution is placed in
In thermostat water bath, CO is passed through in the case of stirring2Gas；2nd, certain density PASP solution is added to above-mentioned solution
In, stop being passed through CO after reaction a period of time2Gas；3rd, gained sample is successively washed with deionized water and absolute ethyl alcohol respectively
Wash, carry out suction filtration, be then vacuum dried under certain constant temperature and obtain calcium carbonate crystal for a period of time.Chinese patent CN
105417569A discloses a kind of preparation method of rod-like nano calcium carbonate, comprises the following steps：（1）Calcining：Calcite is put
Calcination processing is carried out in Muffle furnace, lime powder is obtained；（2）Digestion reaction：By step（1）In the lime powder that obtains
After cooling, it is dissolved in deionized water by certain solid-to-liquid ratio, stirring is configured to emulsion；（3）Carbonization：To step（3）The emulsion for obtaining
It is middle to add a certain amount of chemical additives sodium sulphate, after stirring, it is placed in ice-water bath, the temperature and pH of real-time detection emulsion
Value, then carbon dioxide is passed through while stirring, when the pH value of liquid to be mixed is more than 5.0, add a certain amount of dispersant to gather
Ethylene glycol-polyvinyl alcohol, when pH value to neutrality, stopping is passed through carbon dioxide, continues constant temperature and stirs 30~60min；（4）Dry
Shaping：By step（3）In obtain final mixture decompression suction filtration, washing, vacuum drying, obtain the rod-like nano carbonic acid
Calcium.
On nano-calcium carbonate it is modified in terms of, the modifying agent of report has Al-Ti-diffused steel, stearic acid, double (two octyloxies are burnt
It is phosphate-based) mixture or palm oil and polyethylene glycol of ethylene titanate esters, palm oil or palm oil and lauryl sodium sulfate
The mixing saponification liquor of mixture, aliphatic acid and diethylene triamine pentacetic acid (DTPA) iron-sodium complex etc..And it is used for PVC automobile chassises
The calcium carbonate modified report of stone-impact-proof paint is few.
The B of Chinese patent CN 104403433 disclose a kind of preparation side of the special winnofil of PVC stone-impact-resistapaint paints
Milk of lime is adjusted to proportion 1.040~1.080 by method, technological operation, is passed through kiln gas flow for 6~10m3/h, works as reacting liquid pH value
When dropping to less than 7.0, it is 16~40m to control ripe slurry specific surface area2/ g, adds compounding surface conditioning agent to be wrapped at 50~90 DEG C
Cover, the total addition of surface conditioning agent is the 1.5~5.0% of calcium carbonate butt；By slurries filter-press dehydration, dry, pulverize, wrap
Dress, obtains final product PVC stone-impact-proof paint winnofil products.Winnofil prepared by the method has relatively low hygroscopicity,
Effectively the thixotropy of control filled PVC plasticized paste, yield value and viscosity, improve the rheological stability of PVC plasticized pastes.It is Chinese special
Sharp CN105885472A discloses a kind of preparation method of vehicle paint base nano-calcium carbonate, by specific surface area be 20.0~
30.0m2The calcium carbonate serosity of/g is heated to 70~90 DEG C；Match somebody with somebody surface treatment to polyamide wax and fatty acid complex is added in slurries
Agent, constant temperature stirs 30~60min, obtains modified calcium carbonate slurries；According still further to conventional method by press filtration, drying, crushing, classification and
Packaging, that is, obtain nano-calcium carbonate product.
Preparation currently used for the calcium carbonate of PVC automobile chassis stone-impact-proof paints and it is modified be separate, or the crystalline substance for using
Type controlling agent, modifying agent are different material so that technological process flow is complex, low production efficiency, high cost.Therefore how
Finding one kind can have excellent properties, pattern control and modified material can be integrated again, and can shorten technological process, subtract
Few cost, the modified calcium carbonate to producing different-shape has positive meaning.
The content of the invention
The deficiency that the present invention exists for existing calcium carbonate modified method, there is provided one kind is hit for the anti-stone of PVC automobile chassises
The preparation method of modified paint calcium carbonate.The method controls carbon simultaneously by using low-molecular-weight polypropylene acid-Sodium Polyacrylate
The pattern and performance of sour calcium, when the bar-shaped calcium carbonate fine powder for obtaining is applied to PVC automobile chassis stone-impact-proof paints, can assign PVC
Plasticized paste has the performance such as good thixotropy, yield value, viscosity, stability, corrosion-resistant, anti-oxidant.
In order to realize the above object the present invention is according to PVC macromolecules and calcium carbonate molecular structure property, by finding both
The material that pattern control can be carried out and can be modified, is modified while bar-shaped calcium carbonate is prepared, and reaching a step and preparing is used for
The purpose of the modified bar-shaped calcium carbonate fine powder of PVC automobile chassis stone-impact-proof paints.
The technical solution adopted by the present invention is as follows：
A kind of preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates, including synthesis-modified-reaction, filtering,
Drying, disintegrating process, concrete operation step are as follows：
（1）Configuration quality concentration is 10~20% calcium hydroxide suspension, and poly acrylic acid-poly acrylic acid is added under stirring
Sodium, stirs 20~30min at room temperature~100 DEG C, is then passed through the gas containing carbon dioxide with the speed of 10~40L/h,
Continue stirring reaction until pH=7.0~7.5, stop heating, be subsequently added into poly acrylic acid-poly PAA, continue to stir 30~
50min, obtains calcium carbonate serosity；
（2）Calcium carbonate serosity is carried out into separation of solid and liquid, the liquids recovery after separation is used for the configuration of calcium hydroxide, consolidating after separation
Body is crushed by drying, and packaging obtains final product modified calcium carbonate micro mist.
Preferably, above step（1）Middle poly acrylic acid-poly PAA first time addition is calcium hydroxide in suspension
The 3~6% of butt weight, second addition is 2~4% of calcium hydroxide butt weight in suspension.
Preferably, the component of the above polyacrylic acid is 500~3000, the molecular weight of Sodium Polyacrylate for 500~
3000。
Preferably, the quality of the above polyacrylic acid and Sodium Polyacrylate is 1~10: 1000.
Preferably, the content of the above carbon dioxide is 25~98%.
Preferably, above-described drying temperature is 70~90 DEG C.
Compared with prior art, advantages of the present invention and have the beneficial effect that：
1st, this method is by controlling the pattern of calcium carbonate and modified using low-molecular-weight polypropylene acid-Sodium Polyacrylate, not only
Preparation process is simple, improve production efficiency can be made, moreover it is possible to reduce the consumption of modifying agent, reducing energy consumption is saved artificial, given up
Water can reduce discharge capacity with recycling, significantly reduce production cost.
2nd, when the modified bar-shaped calcium carbonate fine powder that this method is prepared is applied to PVC automobile chassis stone-impact-proof paints, can
Assigning PVC plasticized pastes has the performances such as good thixotropy, yield value, viscosity, stability.
3rd, this method preparation process is simple, operation are easily, production efficiency is high, low cost, easily realizes industrialized production, have
There are good economic benefit, ecological efficiency and social benefit.
Brief description of the drawings
Fig. 1 is the process chart of the preparation method of modified calcium carbonate of the present invention；
Fig. 2 is the surface sweeping electron microscope of the modified calcium carbonate micro mist of embodiment 1；
Fig. 3 is the surface sweeping electron microscope of the modified calcium carbonate micro mist of embodiment 3.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is further described, but is not limited to protection scope of the present invention.
First, the preparation of modified calcium carbonate
Embodiment 1
A kind of preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates, concrete operation step is as follows：
（1）Configuration quality concentration is 15% calcium hydroxide suspension, and it is 5% that calcium hydroxide butt weight is added under stirring
Poly acrylic acid-poly PAA, stirs 30min at 50 DEG C, is then passed through the titanium dioxide that content is 30% with the speed of 15L/h
The gas of carbon, continues stirring reaction until pH=7.0, stops heating, is subsequently added into calcium hydroxide butt weight for 3% polypropylene
Acid-Sodium Polyacrylate, continues to stir 40min, obtains calcium carbonate serosity；The mass ratio of wherein poly acrylic acid-poly PAA is
10:1000, the molecular weight of polyacrylic acid is 500, and the molecular weight of Sodium Polyacrylate is 500；
（2）Calcium carbonate serosity is carried out into separation of solid and liquid, the liquids recovery after separation is used for the configuration of calcium hydroxide, consolidating after separation
Body is dried at 80 DEG C, is crushed, and packaging obtains final product modified calcium carbonate micro mist.
Embodiment 2
A kind of preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates, concrete operation step is as follows：
（1）Configuration quality concentration is 12% calcium hydroxide suspension, and it is 4% that calcium hydroxide butt weight is added under stirring
Poly acrylic acid-poly PAA, stirs 20min at 80 DEG C, is then passed through the titanium dioxide that content is 50% with the speed of 10L/h
The gas of carbon, continues stirring reaction until pH=7.5, stops heating, is subsequently added into calcium hydroxide butt weight for 2% polypropylene
Acid-Sodium Polyacrylate, continues to stir 30min, obtains calcium carbonate serosity；The mass ratio of wherein poly acrylic acid-poly PAA is
5:1000, the molecular weight of polyacrylic acid is 1000, and the molecular weight of Sodium Polyacrylate is 1000；
（2）Calcium carbonate serosity is carried out into separation of solid and liquid, the liquids recovery after separation is used for the configuration of calcium hydroxide, consolidating after separation
Body is dried at 90 DEG C, is crushed, and packaging obtains final product modified calcium carbonate micro mist.
Embodiment 3
A kind of preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates, concrete operation step is as follows：
（1）Configuration quality concentration is 12% calcium hydroxide suspension, and it is 6% that calcium hydroxide butt weight is added under stirring
Poly acrylic acid-poly PAA, stirs 20min at 100 DEG C, is then passed through the titanium dioxide that content is 98% with the speed of 30L/h
The gas of carbon, continues stirring reaction until pH=7.5, stops heating, is subsequently added into calcium hydroxide butt weight for 4% polypropylene
Acid-Sodium Polyacrylate, continues to stir 50min, obtains calcium carbonate serosity；The mass ratio of wherein poly acrylic acid-poly PAA is
1:1000, the molecular weight of polyacrylic acid is 3000, and the molecular weight of Sodium Polyacrylate is 3000；
（2）Calcium carbonate serosity is carried out into separation of solid and liquid, the liquids recovery after separation is used for the configuration of calcium hydroxide, consolidating after separation
Body is dried at 70 DEG C, is crushed, and packaging obtains final product modified calcium carbonate micro mist.
Embodiment 4
A kind of preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates, concrete operation step is as follows：
（1）Configuration quality concentration is 18% calcium hydroxide suspension, and it is 3% that calcium hydroxide butt weight is added under stirring
Poly acrylic acid-poly PAA, is stirred at room temperature 30min, is then passed through the titanium dioxide that content is 90% with the speed of 40L/h
The gas of carbon, continues stirring reaction until pH=7.0, stops heating, is subsequently added into calcium hydroxide butt weight for 2% polypropylene
Acid-Sodium Polyacrylate, continues to stir 40min, obtains calcium carbonate serosity；The mass ratio of wherein poly acrylic acid-poly PAA is
3:1000, the molecular weight of polyacrylic acid is 2000, and the molecular weight of Sodium Polyacrylate is 2000；
（2）Calcium carbonate serosity is carried out into separation of solid and liquid, the liquids recovery after separation is used for the configuration of calcium hydroxide, consolidating after separation
Body is dried at 85 DEG C, is crushed, and packaging obtains final product modified calcium carbonate micro mist.
Embodiment 5
A kind of preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates, concrete operation step is as follows：
（1）Configuration quality concentration is 10% calcium hydroxide suspension, and it is 4% that calcium hydroxide butt weight is added under stirring
Poly acrylic acid-poly PAA, stirs 20min at 80 DEG C, is then passed through the titanium dioxide that content is 70% with the speed of 20L/h
The gas of carbon, continues stirring reaction until pH=7.5, stops heating, is subsequently added into calcium hydroxide butt weight for 3% polypropylene
Acid-Sodium Polyacrylate, continues to stir 40min, obtains calcium carbonate serosity；The mass ratio of wherein poly acrylic acid-poly PAA is
8:1000, the molecular weight of polyacrylic acid is 1000, and the molecular weight of Sodium Polyacrylate is 1000；
（2）Calcium carbonate serosity is carried out into separation of solid and liquid, the liquids recovery after separation is used for the configuration of calcium hydroxide, consolidating after separation
Body is dried at 70 DEG C, is crushed, and packaging obtains final product modified calcium carbonate micro mist.
2nd, the application of modified calcium carbonate
In order to verify the performance of modified calcium carbonate micro mist obtained in the present invention, will be using nano-calcium carbonate, unmodified bar-shaped carbonic acid
Calcium makees Comparison study experiment with the product that embodiment 1-5 is prepared, and is applied to prepare PVC automobile stone-impact-proof paints, by property
Can determine, it the results are shown in Table 1.
The preparation of PVC automobile chassis stone-impact-proof paints：According to quality than PVC paste resin（C12/62V）:PVC paste blending tree
Fat（C65V）:Nano-calcium carbonate:Dioctyl phthalate：Calcium oxide=1:1:0.8:2.4:0.08, each raw material is poured into stirring
In tank, slowly stirred using glass bar to powder complete wetting, then high speed dispersor with rotating speed be 2500r/min to sample
Carry out strong stirring 5 minutes.Obtain PVC plasticized pastes, sample is placed at room temperature carries out the test of properties after 24h.
Application Example comparing result table
It can be seen from the results above that PVC coating items prepared by the modified calcium carbonate micro mist that this programme embodiment 1-5 is obtained refer to
Mark has been above unmodified bar-shaped calcium carbonate, basically reaches the technical indicator of nano-calcium carbonate.
The modified calcium carbonate micro mist that the embodiment of the present invention 1 and embodiment 3 are obtained is scanned through Electronic Speculum detection, testing result point
Not as shown in Figures 2 and 3.As can be seen from the figure the pattern of the modified calcium carbonate product that the present invention is obtained is in rhabdolith,
Grain size is more slightly larger than nanoscale, with larger draw ratio 3000-5000nm:200-400nm, changes through low-molecular weight polymer
Property after, with the compatibility of polyvinyl chloride resin more preferably, therefore the PVC coating properties for preparing are preferable.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for those skilled in the art
For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (6)
1. a kind of preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates, it is characterised in that：Including synthesis-
Modified-reaction, filtering, drying, disintegrating process, concrete operation step are as follows：
（1）Configuration quality concentration is 10~20% calcium hydroxide suspension, and poly acrylic acid-poly acrylic acid is added under stirring
Sodium, stirs 20~30min at room temperature~100 DEG C, is then passed through the gas containing carbon dioxide with the speed of 10~40L/h,
Continue stirring reaction until pH=7.0~7.5, stop heating, be subsequently added into poly acrylic acid-poly PAA, continue to stir 30~
50min, obtains calcium carbonate serosity；
（2）Calcium carbonate serosity is carried out into separation of solid and liquid, the liquids recovery after separation is used for the configuration of calcium hydroxide, consolidating after separation
Body is crushed by drying, and packaging obtains final product modified calcium carbonate micro mist.
2. the preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates according to claim 1, its feature
It is：Step（1）Middle poly acrylic acid-poly PAA first time addition be suspension in calcium hydroxide butt weight 3~
6%, second addition is 2~4% of calcium hydroxide butt weight in suspension.
3. the preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates according to claim 1 and 2, its
It is characterised by：The component of the polyacrylic acid is 500~3000, polyacrylic acid molecular weight in Sodium Polyacrylate for 500~
3000。
4. the preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates according to claim 1 and 2, its
It is characterised by：The mass ratio of the polyacrylic acid and Sodium Polyacrylate is 1~10:1000.
5. the preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates according to claim 1, its feature
It is：The content of the carbon dioxide is 25~98%.
6. the preparation method for PVC automobile chassis stone-impact-proof paint modified calcium carbonates according to claim 1, its feature
It is：Described drying temperature is 70~90 DEG C.
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| CN2016109706620 | 2016-11-07 | ||
| CN201610970662 | 2016-11-07 |
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Cited By (6)
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| CN109179471A (en) * | 2018-09-28 | 2019-01-11 | 河北化工医药职业技术学院 | A kind of preparation method with resistance to settling precipitated calcium carbonate |
| CN109399683A (en) * | 2018-12-06 | 2019-03-01 | 东北大学 | A kind of preparation method of PVC automobile bottom gluing surrender enhancing nanometer calcium carbonate |
| CN111892761A (en) * | 2020-08-17 | 2020-11-06 | 东莞市赛美塑胶制品有限公司 | High-breathability cast film and preparation method thereof |
| CN112724708A (en) * | 2021-01-11 | 2021-04-30 | 广西华纳新材料科技有限公司 | Surface treatment method of nano calcium carbonate for impact-resistant automobile chassis coating |
| CN114410129A (en) * | 2022-02-16 | 2022-04-29 | 安徽省宣城市华纳新材料科技有限公司 | Nano calcium carbonate for double-component MS sealant and surface treatment method thereof |
| CN115504497A (en) * | 2022-10-09 | 2022-12-23 | 陕西安东兴阳岗石科技有限公司 | Preparation method and application of low-oil-absorption-value nano calcium carbonate |
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| CN105084403A (en) * | 2014-12-30 | 2015-11-25 | 建德市云峰碳酸钙有限公司 | Preparation method of calcium carbonate for low temperature-resistant master batch |
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| CN1884085A (en) * | 2006-06-29 | 2006-12-27 | 上海东升新材料有限公司 | Process for preparing superfine light calcium carbonate |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179471A (en) * | 2018-09-28 | 2019-01-11 | 河北化工医药职业技术学院 | A kind of preparation method with resistance to settling precipitated calcium carbonate |
| CN109179471B (en) * | 2018-09-28 | 2023-04-21 | 河北化工医药职业技术学院 | Preparation method of light calcium carbonate with anti-sedimentation property |
| CN109399683A (en) * | 2018-12-06 | 2019-03-01 | 东北大学 | A kind of preparation method of PVC automobile bottom gluing surrender enhancing nanometer calcium carbonate |
| CN109399683B (en) * | 2018-12-06 | 2020-12-01 | 东北大学 | Preparation method of nano calcium carbonate for yield enhancement of PVC (polyvinyl chloride) automobile primer |
| CN111892761A (en) * | 2020-08-17 | 2020-11-06 | 东莞市赛美塑胶制品有限公司 | High-breathability cast film and preparation method thereof |
| CN112724708A (en) * | 2021-01-11 | 2021-04-30 | 广西华纳新材料科技有限公司 | Surface treatment method of nano calcium carbonate for impact-resistant automobile chassis coating |
| CN112724708B (en) * | 2021-01-11 | 2021-09-28 | 广西华纳新材料科技有限公司 | Surface treatment method of nano calcium carbonate for impact-resistant automobile chassis coating |
| CN114410129A (en) * | 2022-02-16 | 2022-04-29 | 安徽省宣城市华纳新材料科技有限公司 | Nano calcium carbonate for double-component MS sealant and surface treatment method thereof |
| CN115504497A (en) * | 2022-10-09 | 2022-12-23 | 陕西安东兴阳岗石科技有限公司 | Preparation method and application of low-oil-absorption-value nano calcium carbonate |
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