CN111662575A - Modified bentonite for plastics and paint - Google Patents
Modified bentonite for plastics and paint Download PDFInfo
- Publication number
- CN111662575A CN111662575A CN202010538040.7A CN202010538040A CN111662575A CN 111662575 A CN111662575 A CN 111662575A CN 202010538040 A CN202010538040 A CN 202010538040A CN 111662575 A CN111662575 A CN 111662575A
- Authority
- CN
- China
- Prior art keywords
- bentonite
- slurry
- plastics
- modified bentonite
- modified
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C09C1/40—Compounds of aluminium
- C09C1/42—Clays
-
- 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
- C08K3/346—Clay
-
- 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
- C08K9/10—Encapsulated ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of 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; Compositions of derivatives of such polymers
- C08L27/02—Compositions of 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; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of 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; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- 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
-
- 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
- C09C3/04—Physical treatment, e.g. grinding, treatment with ultrasonic vibrations
-
- 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
-
- 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
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- 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
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses modified bentonite for plastics and coatings, which is prepared by crushing bentonite, adding water for dissolving, adding an impurity removal reagent consisting of sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide, uniformly stirring, standing and filtering to obtain bentonite slurry; adding a compound modifier consisting of melamine, starch, rape oil fatty acid alkanolamide borate and imidazoline type phosphate sodium salt into the bentonite slurry, and uniformly mixing and stirring to obtain modified bentonite slurry; then conveying the mixture to a surface modifying machine, and adding an antibacterial agent consisting of chitosan, cinnamyl aldehyde and benzyldimethylhexadecylammonium chloride for secondary modification; and dehydrating by a filter press, drying and crushing to obtain the modified bentonite. The modified bentonite prepared by the invention has good dispersibility and processability, good compatibility with plastics and coatings, enhanced bonding force of interfaces between the plastics and the coatings, and good flame retardant property and antibacterial property.
Description
Technical Field
The invention relates to the technical field of preparation of inorganic nonmetallic minerals, in particular to modified bentonite for plastics and coatings.
Background
The bentonite is a non-metal mineral product with montmorillonite as a main mineral component, and the montmorillonite structure is 2: a type 1 crystal structure. The bentonite is one of the clay minerals with the widest application range and higher economic value at present due to the special water absorbability, water plasticity, caking property, stronger ion exchange property and the like. The bentonite can be used as binder, suspending agent, thickener, thixotropic agent, and flocculation agent
The catalyst is used in metallurgical, mechanical, petroleum, chemical, polymer material, environment protection and other fields.
In the plastic and paint industries, the bentonite not only can play a role in enhancing and improving the adhesion, but also can improve the water resistance, flame retardance, insulation, wear resistance, corrosion resistance and other properties of the product. However, the bentonite has hydrophilic and oleophobic surfaces, is strong in polarity, has a large comparative area and high surface free energy, and is easy to agglomerate in an organic system, so that the bentonite is difficult to uniformly disperse in plastic and coating base materials, the agglomeration phenomenon among particles is easy to occur, the bonding force between the bentonite and the plastic and coating base materials is poor, interface defects are easy to cause, the bentonite is easy to fall off, and the material performance is reduced. Therefore, it is necessary to modify the surface of bentonite to improve the dispersibility and processability of bentonite in plastics and coating systems and to improve the binding force between bentonite and plastics and coating substrates, thereby maximizing the material properties. With the increasing awareness of people on health and environmental protection, the requirements of bacteriostasis and sterilization are provided for coating plastic products which are frequently contacted in daily life, so that the demand of improving the antibacterial property of bentonite is the demand of the current market.
Disclosure of Invention
The invention provides a modified bentonite for plastics and coatings aiming at the problems. The modified bentonite prepared by the scheme of the invention has good dispersibility and processability, good compatibility with plastics and coatings, and strong bonding force of an interface between the plastics and the coatings, and the modified bentonite has good flame retardant property and antibacterial and bacteriostatic properties.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a modified bentonite for plastics and paint is prepared through the following steps:
s1: crushing bentonite, adding water for dissolving, adding an impurity removal reagent consisting of sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide, uniformly stirring, and standing to obtain bentonite slurry;
s2: adding a compound modifier consisting of melamine, starch, rape oil fatty acid alkanolamide borate and imidazoline type phosphate sodium salt into the bentonite slurry, and uniformly mixing and stirring to obtain modified bentonite slurry;
s3: conveying the modified bentonite slurry to a surface modifying machine, and adding an antibacterial agent consisting of chitosan, cinnamaldehyde and benzyldimethylhexadecylammonium chloride for secondary modification;
s4: and dehydrating the slurry subjected to secondary modification by using a filter press, drying and crushing to obtain the modified bentonite.
Furthermore, the addition amount of the impurity removal reagent is 2-4% of the mass of the bentonite.
Further, the mass ratio of the sodium diethyldithiocarbamate to the ethylene diamine tetraacetic acid to the polyacrylamide is 1-3:1-3: 5-10.
Further, the addition amount of the compound modifier is 3-5% of the dry weight of the bentonite in the slurry.
Further, the mass ratio of the melamine to the starch to the rape oil fatty acid alkanolamide borate to the imidazoline type phosphate sodium salt is 3-5:6-10:1-3: 1-3.
Further, the addition amount of the antibacterial agent is 1-3% of the dry weight of the bentonite in the slurry.
Further, the mass ratio of the chitosan, the cinnamaldehyde and the benzyldimethylhexadecylammonium chloride in the antibacterial agent is 3-5:1-3: 0.5-1.5.
Further, the drying is drying by adopting a pulse airflow dryer; the feeding speed of the pulse airflow dryer is 120-180kg/h, the drying temperature is 80-100 ℃, and the air speed is 15-20 m/s.
Compared with the prior art, the invention has the advantages and beneficial effects that:
1. according to the method, the bentonite is modified by adopting the compound modifier consisting of melamine, starch, rape oil fatty acid alkanolamide borate and imidazoline type phosphate sodium salt to form an organic-inorganic hybrid network structure, so that the compatibility of the bentonite with plastics and coatings can be improved, the binding force between materials is enhanced, the dispersibility and the processability of the cloud bentonite are improved, the oil absorption value of the bentonite is reduced, and meanwhile, the added modifier forms a P-N-B flame retardant system to improve the flame retardance of the bentonite.
2. According to the method, the bentonite is subjected to secondary modification by an antibacterial agent consisting of chitosan, cinnamaldehyde and benzyldimethylhexadecylammonium chloride, so that the antibacterial and bacteriostatic performance of the bentonite can be improved, and the bentonite can be applied to plastics and coatings to further improve the antibacterial and bacteriostatic performance of products, is in line with the pursuit of modern people on antibacterial products, and has a wide market prospect.
3. According to the method, before modification, the bentonite is subjected to impurity removal treatment by sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide, so that metals such as iron, cobalt and the like in the bentonite can be removed, the purity of the bentonite is improved, and the stability of the product is improved.
4. The method adopts the pulse airflow dryer to dry the bentonite, so that the drying and heating are uniform, the efficiency is high, the modifier can be better wrapped on the surface of the bentonite, and the dispersion of the bentonite is facilitated.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.
Example 1
A modified bentonite for plastics and paint is prepared through the following steps:
s1: crushing bentonite to 325 meshes, adding water with the weight 3 times that of the bentonite for dissolving, adding an impurity removal reagent consisting of sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide with the mass ratio of 2:3:7, uniformly stirring, standing for 12h, wherein the addition amount of the impurity removal reagent is 2.4% of the mass of the bentonite, and standing for 12h to obtain bentonite slurry;
s2: adding a compound modifier consisting of melamine, starch, rape oil fatty acid alkanolamide borate and imidazoline type phosphate sodium salt in a mass ratio of 4:8:1:2 into the bentonite slurry, wherein the addition amount of the compound modifier is 4.5% of the dry weight of the bentonite in the slurry, and uniformly mixing and stirring to obtain modified bentonite slurry;
s3: conveying the modified bentonite slurry to a surface modifying machine, and then adding an antibacterial agent consisting of chitosan, cinnamaldehyde and benzyldimethylhexadecylammonium chloride in a mass ratio of 3:1:1 for secondary modification, wherein the addition amount of the antibacterial agent is 1.5% of the dry weight of the bentonite in the slurry;
s4: and (3) dehydrating the slurry subjected to secondary modification by using a filter press, drying by using a pulse airflow dryer, crushing to obtain the modified bentonite, wherein the feeding speed of the pulse airflow dryer is 150kg/h, the drying temperature is 90 ℃, and the air speed is 15 m/s.
Example 2
A modified bentonite for plastics and paint is prepared through the following steps:
s1: crushing bentonite to 400 meshes, adding water which is 5 times of the weight of the bentonite for dissolving, adding an impurity removal reagent which consists of sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide and has the mass ratio of 1:2:6, stirring uniformly, wherein the addition amount of the impurity removal reagent is 3.6 percent of the mass of the bentonite, and standing for 20 hours to obtain bentonite slurry;
s2: adding a compound modifier consisting of melamine, starch, rape oil fatty acid alkanolamide borate and imidazoline type phosphate sodium salt in a mass ratio of 3:7:2:3 into the bentonite slurry, wherein the addition amount of the compound modifier is 3.5% of the dry weight of the bentonite in the slurry, and uniformly mixing and stirring to obtain modified bentonite slurry;
s3: conveying the modified bentonite slurry to a surface modifying machine, and then adding an antibacterial agent consisting of chitosan, cinnamaldehyde and benzyldimethylhexadecylammonium chloride in a mass ratio of 5:2:1 for secondary modification, wherein the addition amount of the antibacterial agent is 2.0 percent of the dry weight of the bentonite in the slurry;
s4: and (3) dehydrating the slurry subjected to secondary modification by using a filter press, drying by using a pulse airflow dryer, crushing to obtain the modified bentonite, wherein the feeding speed of the pulse airflow dryer is 180kg/h, the drying temperature is 100 ℃, and the air speed is 15 m/s.
Example 3
A modified bentonite for plastics and paint is prepared through the following steps:
s1: crushing bentonite to 400 meshes, adding water which is 4 times of the weight of the bentonite for dissolving, adding an impurity removal reagent which consists of sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide and has a mass ratio of 2:1:7, stirring uniformly, wherein the addition amount of the impurity removal reagent is 3.0 percent of the mass of the bentonite, and standing for 18 hours to obtain bentonite slurry;
s2: adding a compound modifier consisting of melamine, starch, rape oil fatty acid alkanolamide borate and imidazoline type phosphate sodium salt in a mass ratio of 4:8:1:2 into the bentonite slurry, wherein the addition amount of the compound modifier is 3.0% of the dry weight of the bentonite in the slurry, and uniformly mixing and stirring to obtain modified bentonite slurry;
s3: conveying the modified bentonite slurry to a surface modifying machine, and then adding an antibacterial agent consisting of chitosan, cinnamaldehyde and benzyldimethylhexadecylammonium chloride in a mass ratio of 4:2:1 for secondary modification, wherein the addition amount of the antibacterial agent is 1.4% of the dry weight of the bentonite in the slurry;
s4: and (3) dehydrating the slurry subjected to secondary modification by using a filter press, drying by using a pulse airflow dryer, crushing to obtain the modified bentonite, wherein the feeding speed of the pulse airflow dryer is 150kg/h, the drying temperature is 90 ℃, and the air speed is 20 m/s.
Example 4
A modified bentonite for plastics and paint is prepared through the following steps:
s1: crushing bentonite to 250 meshes, adding water which is 5 times of the weight of the bentonite for dissolving, adding an impurity removal reagent which consists of sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide and has the mass ratio of 3:2:5, stirring uniformly, wherein the addition amount of the impurity removal reagent is 4.0 percent of the mass of the bentonite, and standing for 24 hours to obtain bentonite slurry;
s2: adding a compound modifier consisting of melamine, starch, rape oil fatty acid alkanolamide borate and imidazoline type phosphate sodium salt in a mass ratio of 3:7:1:1 into the bentonite slurry, wherein the addition amount of the compound modifier is 3.6% of the dry weight of the bentonite in the slurry, and uniformly mixing and stirring to obtain modified bentonite slurry;
s3: conveying the modified bentonite slurry to a surface modifying machine, and then adding an antibacterial agent consisting of chitosan, cinnamaldehyde and benzyldimethylhexadecylammonium chloride in a mass ratio of 4:1:1 for secondary modification, wherein the addition amount of the antibacterial agent is 2.4% of the dry weight of the bentonite in the slurry;
s4: and (3) dehydrating the slurry subjected to secondary modification by using a filter press, drying by using a pulse airflow dryer, crushing to obtain the modified bentonite, wherein the feeding speed of the pulse airflow dryer is 180kg/h, the drying temperature is 100 ℃, and the air speed is 15 m/s.
Example 5
A modified bentonite for plastics and paint is prepared through the following steps:
s1: crushing bentonite to 400 meshes, adding water which is 4 times of the weight of the bentonite for dissolving, adding an impurity removal reagent which consists of sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide and has the mass ratio of 2:3:7, stirring uniformly, wherein the addition amount of the impurity removal reagent is 3.6 percent of the mass of the bentonite, and standing for 20 hours to obtain bentonite slurry;
s2: adding a compound modifier consisting of melamine, starch, rape oil fatty acid alkanolamide borate and imidazoline type phosphate sodium salt in a mass ratio of 4:8:1:2 into the bentonite slurry, wherein the addition amount of the compound modifier is 4.5% of the dry weight of the bentonite in the slurry, and uniformly mixing and stirring to obtain modified bentonite slurry;
s3: conveying the modified bentonite slurry to a surface modifying machine, and then adding an antibacterial agent consisting of chitosan, cinnamaldehyde and benzyldimethylhexadecylammonium chloride in a mass ratio of 5:2.5:1.5 for secondary modification, wherein the addition amount of the antibacterial agent is 1.8 percent of the dry weight of the bentonite in the slurry;
s4: and (3) dehydrating the slurry subjected to secondary modification by using a filter press, drying by using a pulse airflow dryer, crushing to obtain the modified bentonite, wherein the feeding speed of the pulse airflow dryer is 150kg/h, the drying temperature is 90 ℃, and the air speed is 20 m/s.
Comparative example 1
A modified bentonite for plastics and paint is prepared through the following steps:
s1: crushing bentonite to 400 meshes, adding water with the weight 4 times that of the bentonite for dissolving to obtain bentonite slurry;
s2: adding a compound modifier consisting of melamine, starch, rape oil fatty acid alkanolamide borate and imidazoline type phosphate sodium salt in a mass ratio of 4:8:1:2 into the bentonite slurry, wherein the addition amount of the compound modifier is 4.5% of the dry weight of the bentonite in the slurry, and uniformly mixing and stirring to obtain modified bentonite slurry;
s3: conveying the modified bentonite slurry to a surface modifying machine, and then adding an antibacterial agent consisting of chitosan, cinnamaldehyde and benzyldimethylhexadecylammonium chloride in a mass ratio of 5:2.5:1.5 for secondary modification, wherein the addition amount of the antibacterial agent is 1.8 percent of the dry weight of the bentonite in the slurry;
s4: and (3) dehydrating the slurry subjected to secondary modification by using a filter press, drying by using a pulse airflow dryer, crushing to obtain the modified bentonite, wherein the feeding speed of the pulse airflow dryer is 150kg/h, the drying temperature is 90 ℃, and the air speed is 20 m/s.
Comparative example 2
A modified bentonite for plastics and paint is prepared through the following steps:
s1: crushing bentonite to 400 meshes, adding water which is 4 times of the weight of the bentonite for dissolving, adding an impurity removal reagent which consists of sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide and has the mass ratio of 2:3:7, stirring uniformly, wherein the addition amount of the impurity removal reagent is 3.6 percent of the mass of the bentonite, and standing for 20 hours to obtain bentonite slurry;
s2: conveying the bentonite slurry to a surface modifying machine, and then adding an antibacterial agent consisting of chitosan, cinnamaldehyde and benzyldimethylhexadecylammonium chloride in a mass ratio of 5:2.5:1.5 for secondary modification, wherein the addition amount of the antibacterial agent is 1.8 percent of the dry weight of the bentonite in the slurry;
s3: and (3) dehydrating the modified slurry by a filter press, drying by a pulse airflow dryer, crushing to obtain the modified bentonite, wherein the feeding speed of the pulse airflow dryer is 150kg/h, the drying temperature is 90 ℃, and the air speed is 20 m/s.
Comparative example 3
A modified bentonite for plastics and paint is prepared through the following steps:
s1: crushing bentonite to 400 meshes, adding water which is 4 times of the weight of the bentonite for dissolving, adding an impurity removal reagent which consists of sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide and has the mass ratio of 2:3:7, stirring uniformly, wherein the addition amount of the impurity removal reagent is 3.6 percent of the mass of the bentonite, and standing for 20 hours to obtain bentonite slurry;
s2: adding a compound modifier consisting of melamine, starch, rape oil fatty acid alkanolamide borate and imidazoline type phosphate sodium salt in a mass ratio of 4:8:1:2 into the bentonite slurry, wherein the addition amount of the compound modifier is 4.5% of the dry weight of the bentonite in the slurry, and uniformly mixing and stirring to obtain modified bentonite slurry;
s3: and (2) dehydrating the modified bentonite slurry by a filter press, drying by a pulse airflow dryer, crushing to obtain the modified bentonite, wherein the feeding speed of the pulse airflow dryer is 150kg/h, the drying temperature is 90 ℃, and the air speed is 20 m/s.
Comparative example 4
A modified bentonite for plastics and paint is prepared through the following steps:
s1: crushing bentonite to 400 meshes, adding water which is 4 times of the weight of the bentonite for dissolving, adding an impurity removal reagent which consists of sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide and has the mass ratio of 2:3:7, stirring uniformly, wherein the addition amount of the impurity removal reagent is 3.6 percent of the mass of the bentonite, and standing for 20 hours to obtain bentonite slurry;
s2: adding sodium stearate which is 4.5 percent of the dry weight of the bentonite in the bentonite slurry into the bentonite slurry, and uniformly mixing and stirring to obtain modified bentonite slurry;
s3: and (2) dehydrating the modified bentonite slurry by a filter press, drying by a pulse airflow dryer, crushing to obtain the modified bentonite, wherein the feeding speed of the pulse airflow dryer is 150kg/h, the drying temperature is 90 ℃, and the air speed is 20 m/s.
Comparative example 5
The bentonite is directly crushed into 400 meshes, and no modification treatment is carried out subsequently.
The bentonite prepared in the examples 1-5 and the comparative examples 1-5 of the invention is used as PVC plastic filler, and the tensile strength, impact strength, flame retardant property and antibacterial property of PVC plastic are detected according to the conventional method, and the measurement results are shown in Table 1. The formula (by weight) of the PVC plastic is as follows: 100 parts of PVC resin, 20 parts of kaolin, 20 parts of nano calcium carbonate, 3 parts of paraffin, 1 part of sodium stearate, 3 parts of calcium-zinc composite stabilizer, 5 parts of ACR and DOP plasticizer, and the PVC plastic is prepared according to a conventional method. The test results are shown in table 1.
Table 1: performance test result of bentonite prepared by the invention applied to PVC plastics
From the test results, the bentonite prepared by the invention is used as PVC resin filler, so that the product has good mechanical properties, and the flame retardant, antibacterial and antibacterial properties of the product are improved.
The foregoing is a more detailed description of the invention in connection with specific/preferred embodiments and is not intended to limit the practice of the invention to those descriptions. It will be apparent to those skilled in the art that various substitutions and modifications can be made to the described embodiments without departing from the spirit of the invention, and such substitutions and modifications are to be considered as within the scope of the invention.
Claims (8)
1. A modified bentonite for plastics and coatings is characterized in that: the preparation of the modified bentonite comprises the following steps:
s1: crushing bentonite, adding water for dissolving, adding an impurity removal reagent consisting of sodium diethyldithiocarbamate, ethylene diamine tetraacetic acid and polyacrylamide, uniformly stirring, standing, and filtering to obtain bentonite slurry;
s2: adding a compound modifier consisting of melamine, starch, rape oil fatty acid alkanolamide borate and imidazoline type phosphate sodium salt into the bentonite slurry, and uniformly mixing and stirring to obtain modified bentonite slurry;
s3: conveying the modified bentonite slurry to a surface modifying machine, and adding an antibacterial agent consisting of chitosan, cinnamaldehyde and benzyldimethylhexadecylammonium chloride for secondary modification;
s4: and dehydrating the slurry subjected to secondary modification by using a filter press, drying and crushing to obtain the modified bentonite.
2. The modified bentonite for plastics and coatings according to claim 1, wherein: the addition amount of the impurity removal reagent is 2-4% of the mass of the bentonite.
3. The modified bentonite for plastics and coatings according to claim 2, wherein: the mass ratio of the sodium diethyldithiocarbamate to the ethylene diamine tetraacetic acid to the polyacrylamide is 1-3:1-3: 5-10.
4. The modified bentonite for plastics and coatings according to claim 1, wherein: the addition amount of the compound modifier is 3-5% of the dry weight of the bentonite in the slurry.
5. The modified bentonite for plastics and coatings according to claim 4, wherein: the mass ratio of the melamine to the starch to the rape oil fatty acid alkanolamide borate to the imidazoline type sodium phosphate is 3-5:6-10:1-3: 1-3.
6. The modified bentonite for plastics and coatings according to claim 1, wherein: the addition amount of the antibacterial agent is 1-3% of the dry weight of the bentonite in the slurry.
7. The modified bentonite for plastics and coatings according to claim 6, wherein: the mass ratio of the chitosan, the cinnamaldehyde and the benzyldimethylhexadecylammonium chloride in the antibacterial agent is 3-5:1-3: 0.5-1.5.
8. The modified bentonite for plastics and coatings according to claim 1, wherein: the drying is realized by adopting a pulse airflow dryer; the feeding speed of the pulse airflow dryer is 120-180kg/h, the drying temperature is 80-100 ℃, and the air speed is 15-20 m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010538040.7A CN111662575A (en) | 2020-06-12 | 2020-06-12 | Modified bentonite for plastics and paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010538040.7A CN111662575A (en) | 2020-06-12 | 2020-06-12 | Modified bentonite for plastics and paint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111662575A true CN111662575A (en) | 2020-09-15 |
Family
ID=72387480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010538040.7A Pending CN111662575A (en) | 2020-06-12 | 2020-06-12 | Modified bentonite for plastics and paint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111662575A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114230994A (en) * | 2022-02-28 | 2022-03-25 | 旗众科技有限公司 | Degradable environment-friendly material and preparation method thereof |
| CN114853026A (en) * | 2022-03-30 | 2022-08-05 | 哈工大机器人集团(杭州湾)国际创新研究院 | Preparation method of high-performance lithium bentonite |
| CN116790059A (en) * | 2023-07-27 | 2023-09-22 | 美新科技股份有限公司 | Preparation method of antibacterial plastic-wood material and antibacterial floor |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1490358A (en) * | 2002-10-18 | 2004-04-21 | 绵阳市斯沃特科技有限责任公司 | Multifunctional composite natural cellulose brucite powder material and its modified material and composite mother granules manufacturing method |
| CN101724415A (en) * | 2009-12-18 | 2010-06-09 | 暨南大学 | Non-halogen flame retardant containing phosphonium actericide modified montmorillonite, preparation method and application thereof |
| CN101792152A (en) * | 2009-09-23 | 2010-08-04 | 江苏强林生物能源有限公司 | Abietyl quaternary ammonium salt-modified organic nano imvite, preparation method thereof and use thereof |
| CN103145374A (en) * | 2013-02-28 | 2013-06-12 | 高洋 | Preparation method of high-strength high-functionality bentonite composition |
| CN105176296A (en) * | 2015-10-12 | 2015-12-23 | 中国科学院宁波材料技术与工程研究所 | High-temperature resistant coating based on polysilsesquioxane modification and application thereof |
| CN105711091A (en) * | 2016-02-03 | 2016-06-29 | 华南理工大学 | Individualized 3D printed insole and making method thereof |
| CN106995580A (en) * | 2017-03-27 | 2017-08-01 | 佛山汇沐化学科技有限公司 | A kind of high Antibacterial flame retardant plastic its preparation method |
| CN108727871A (en) * | 2018-05-24 | 2018-11-02 | 贺州钟山县双文碳酸钙新材料有限公司 | A method of preparing flame retardant type PVC board timber-used calcium carbonate |
| CN108752981A (en) * | 2018-05-24 | 2018-11-06 | 贺州钟山县双文碳酸钙新材料有限公司 | A kind of modified calcium carbonate and its in the application for preparing silicon rubber |
| CN108794931A (en) * | 2018-06-30 | 2018-11-13 | 钦州市宝业坭兴陶厂 | A kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate and its application |
| CN108892807A (en) * | 2018-05-24 | 2018-11-27 | 贺州钟山县双文碳酸钙新材料有限公司 | A kind of surface modifying method of calcium carbonate and its application in PVC foam plate |
| CN108912945A (en) * | 2017-04-05 | 2018-11-30 | 中国科学院宁波材料技术与工程研究所 | Antibacterial and mouldproof antiseptic fire-retardation integration nano functional coating, its preparation method and application |
| CN108948795A (en) * | 2018-08-03 | 2018-12-07 | 广西贺州市科隆粉体有限公司 | A kind of surface modifying method of wire and cable special-purpose anti-flaming powdered whiting |
| CN111018177A (en) * | 2019-12-12 | 2020-04-17 | 清华大学 | Heavy metal sewage treatment process |
-
2020
- 2020-06-12 CN CN202010538040.7A patent/CN111662575A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1490358A (en) * | 2002-10-18 | 2004-04-21 | 绵阳市斯沃特科技有限责任公司 | Multifunctional composite natural cellulose brucite powder material and its modified material and composite mother granules manufacturing method |
| CN101792152A (en) * | 2009-09-23 | 2010-08-04 | 江苏强林生物能源有限公司 | Abietyl quaternary ammonium salt-modified organic nano imvite, preparation method thereof and use thereof |
| CN101724415A (en) * | 2009-12-18 | 2010-06-09 | 暨南大学 | Non-halogen flame retardant containing phosphonium actericide modified montmorillonite, preparation method and application thereof |
| CN103145374A (en) * | 2013-02-28 | 2013-06-12 | 高洋 | Preparation method of high-strength high-functionality bentonite composition |
| CN105176296A (en) * | 2015-10-12 | 2015-12-23 | 中国科学院宁波材料技术与工程研究所 | High-temperature resistant coating based on polysilsesquioxane modification and application thereof |
| CN105711091A (en) * | 2016-02-03 | 2016-06-29 | 华南理工大学 | Individualized 3D printed insole and making method thereof |
| CN106995580A (en) * | 2017-03-27 | 2017-08-01 | 佛山汇沐化学科技有限公司 | A kind of high Antibacterial flame retardant plastic its preparation method |
| CN108912945A (en) * | 2017-04-05 | 2018-11-30 | 中国科学院宁波材料技术与工程研究所 | Antibacterial and mouldproof antiseptic fire-retardation integration nano functional coating, its preparation method and application |
| CN108727871A (en) * | 2018-05-24 | 2018-11-02 | 贺州钟山县双文碳酸钙新材料有限公司 | A method of preparing flame retardant type PVC board timber-used calcium carbonate |
| CN108752981A (en) * | 2018-05-24 | 2018-11-06 | 贺州钟山县双文碳酸钙新材料有限公司 | A kind of modified calcium carbonate and its in the application for preparing silicon rubber |
| CN108892807A (en) * | 2018-05-24 | 2018-11-27 | 贺州钟山县双文碳酸钙新材料有限公司 | A kind of surface modifying method of calcium carbonate and its application in PVC foam plate |
| CN108794931A (en) * | 2018-06-30 | 2018-11-13 | 钦州市宝业坭兴陶厂 | A kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate and its application |
| CN108948795A (en) * | 2018-08-03 | 2018-12-07 | 广西贺州市科隆粉体有限公司 | A kind of surface modifying method of wire and cable special-purpose anti-flaming powdered whiting |
| CN111018177A (en) * | 2019-12-12 | 2020-04-17 | 清华大学 | Heavy metal sewage treatment process |
Non-Patent Citations (2)
| Title |
|---|
| 冯光炷等: "菜油脂肪酸烷醇酰胺硫酸盐和硼酸酯的合成 ", 《郑州粮食学院学报》 * |
| 孙银霞等: "复合改性膨润土的制备、表征及其吸附性能研究", 《兰州交通大学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114230994A (en) * | 2022-02-28 | 2022-03-25 | 旗众科技有限公司 | Degradable environment-friendly material and preparation method thereof |
| CN114853026A (en) * | 2022-03-30 | 2022-08-05 | 哈工大机器人集团(杭州湾)国际创新研究院 | Preparation method of high-performance lithium bentonite |
| CN114853026B (en) * | 2022-03-30 | 2023-08-08 | 哈工大机器人集团(杭州湾)国际创新研究院 | Preparation method of high-performance lithium bentonite |
| CN116790059A (en) * | 2023-07-27 | 2023-09-22 | 美新科技股份有限公司 | Preparation method of antibacterial plastic-wood material and antibacterial floor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111662575A (en) | Modified bentonite for plastics and paint | |
| CN101967309A (en) | Method for preparing active calcium carbonate | |
| CN111892857A (en) | Industrial pipeline anticorrosion powder coating and preparation method thereof | |
| CN101362835A (en) | Surface treating method of magnesium hydrate combustion inhibitor | |
| CN103554551A (en) | Modified heavy calcium carbonate for fire retardation electric cable material, and preparation method thereof | |
| CN110804286B (en) | Process for preparing flame-retardant composite material by coating ammonium polyphosphate with starch | |
| CN114180592B (en) | Modified bentonite inorganic gel and modification method | |
| Fan et al. | Preparation of in-situ modified diatomite and its application in papermaking | |
| CN108299657B (en) | Preparation method and application of high-dispersion modified lignin | |
| CN111704809A (en) | Method for preparing barium sulfate for plastics and paint | |
| CN110052332B (en) | Copper-based coordination polymer, preparation method thereof and application of copper-based coordination polymer as gangue mineral inhibitor in copper-nickel sulfide flotation | |
| CN113308023A (en) | High-dispersion and organic-affinity aluminum phosphite flame retardant and preparation method thereof | |
| CN109988411B (en) | Flame-retardant smoke-suppression thermoplastic polyurethane antistatic composite material and preparation method thereof | |
| CN104877175B (en) | A kind of supermolecule damping agent and its preparation method and application | |
| CN111607255A (en) | Polylactic acid-modified vermiculite composite material, preparation method and application | |
| CN111440461A (en) | Preparation method of calcium carbonate special for plastics and coatings | |
| CN111393897A (en) | Water-based paint stabilizer and preparation method thereof | |
| CN107686670B (en) | High-expansion-performance environment-friendly bentonite and preparation method thereof | |
| CN116426193A (en) | Water-based environment-friendly anticorrosive paint | |
| Xue et al. | Preparation of Cu/OMMT/LLDPE nanocomposites and synergistic effect study of two different nano materials in polymer matrix | |
| CN113736305A (en) | Tripolyphosphate/carbon nitride nano composite material, preparation method thereof and application thereof in water-based anticorrosive paint | |
| CN112175312B (en) | Environment-friendly stabilizer applied to transparent PVC (polyvinyl chloride) hard product | |
| CN112341907A (en) | Environment-friendly conductive powder coating and preparation method thereof | |
| CN111647287A (en) | Surface modification method of kaolin | |
| CN103754913B (en) | A kind of simple method for preparing of aluminum hydroxide nanoparticle material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200915 |