CN108794931A - A kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate and its application - Google Patents

A kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate and its application Download PDF

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CN108794931A
CN108794931A CN201810718437.7A CN201810718437A CN108794931A CN 108794931 A CN108794931 A CN 108794931A CN 201810718437 A CN201810718437 A CN 201810718437A CN 108794931 A CN108794931 A CN 108794931A
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calcium carbonate
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pvc board
flame retardant
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施宝业
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Qinzhou Baoye Nixing Pottery Factory
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    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
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Abstract

The invention discloses a kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate and its applications, the method of modifying of the nano-calcium carbonate is that dispersibility and chemical additives are added in carbonation, the chemical additives are made of phytic acid and tartaric acid, and dispersant is made of polyoxyethylene glycerol ether monostearate and the sulfonated rilanit special of succinate;It is modified again through rape oil fatty acid alkanolamide borate and Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane, the modified nano calcium carbonate of gained has polymolecularity, good flame resistance, weatherability and excellent mechanical performance.Modified nano calcium carbonate is applied when PVC board is filled, and can assign plank has many advantages, such as that high intensity, shock resistance are strong, good flame resistance, heat-resisting, service life is long.

Description

A kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate and its application
Technical field
The present invention relates to calcium carbonate technical field, the modification side of specifically a kind of flame retardant type PVC board timber-used nano-calcium carbonate Method and its application.
Background technology
Nano-calcium carbonate is the new type functional nano-sized filler of function admirable particularly important in technical calcium carbonate, it is not It is only capable of playing the role of filling increase-volume, reduces cost, can more improve the surface color degree of filled articles, improve the resultant force of product Learn performance, it is a kind of important inorganic chemical product to be widely used in calcium carbonate, be widely used in rubber, plastics, papermaking, In the industry such as composite plate, coating, ink, medicine, car paint, cosmetics, food.But since Nano particles of calcium carbonate grain size is got over Small, the atomicity on surface is more, then surface energy is higher, and suction-operated is stronger, mutually reunites between each particle.Followed by nanometer For calcium carbonate as a kind of inorganic filler, particle surface is hydrophilic and oleophobic, with the compatibility of polyvinyl chloride resin it is poor, easily form aggregation, cause High polymer internal flaw, mechanical property are deteriorated.In order to improve the filling capacity of nano-calcium carbonate, it is necessary to using effective technique and Surface modifying method carries out rational surface modification to nano-calcium carbonate.At present in nono calcium carbonate modified method, mainly The surface conditioning agent of selection is usually aliphatic acid or its salt, although the dispersibility and processing fluidity of system make moderate progress, by In polyvinyl chloride resin it is difficult to effectively be combined with nano-calcium carbonate filler, lead to the interfacial adhesion force difference of matrix and filler, to cause The mechanical strength of PVC board is not high.
Wood-plastic composite panel is to utilize wood powder, bamboo powder, shell powder or agricultural residues powder and plastic resin or waste plastic For primary raw material, through high temperature mixing, processing and forming prepared by a kind of novel environment-friendly composite material.Wood-plastic clad plate compares log scale Material has better ageing-resistant performance, water absorption resistance and a resistance to warpage performance, while can be with Anti-moth-eating, anticorrosive, without preservative treatment And then reduce environmental pollution, and cost is lower than pure timber or plastics, can be processed to various hollow profiles, therefore wood plastics composite Material is widely used in many fields, is a kind of most potential new material.PVC resins in PVC wood plastic composite board There are a large amount of polarity C-Cl keys in molecular chain structure, there are larger active forces between molecule, therefore relative to other universal trees Fat, PVC belong to hard brittle material, and impact strength is relatively low, and have notch sensitivity, easy embrittlement when by external impacts, it is difficult to be used as Structural material, these disadvantages significantly limit development of the PVC wood plastic plank in high-performance field.
Invention content
The present invention there are problems that easily reuniting for existing nano-calcium carbonate, provide a kind of flame retardant type PVC board timber-used nanometer The method of modifying of calcium carbonate and its application.The present invention is that dispersibility and crystal form control are added in the carbonation of nano-calcium carbonate Preparation, obtained nano-calcium carbonate slurry pass through rape oil fatty acid alkanolamide borate and ten difluoros using nano-calcium carbonate Heptyl propyl cage-type silsesquioxane is modified, and the nano-calcium carbonate of gained has polymolecularity, high tenacity, weatherability, anti-flammability With excellent mechanical performance.Modified nano calcium carbonate is applied when PVC board is filled, and can assign plank with high intensity, anti-impact Hit performance strong, good flame resistance, it is heat-resisting, service life is long the advantages that.
An object of the present disclosure is to provide a kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate, including such as Lower step:
(1)Digestion reactor is added in quick lime and hot water and carries out digestion reaction, removal of impurities is still aging, and dilution obtains milk of lime Liquid;
(2)Lime slurry is delivered to carbonation reaction tower, carbon dioxide is passed through and carries out carburizing reagent, be added in carbonisation Chemical additives and dispersant, carbonization to pH value are 7-8, and stopping is passed through carbon dioxide, and the specific surface area for controlling calcium carbonate is 25-40m2/ g obtains nano-calcium carbonate slurry;The chemical additives are made of phytic acid and tartaric acid, and addition is calcium carbonate The 1-2% of dry weight;The dispersant is by polyoxyethylene glycerol ether monostearate and the sulfonated rilanit special of succinate Composition, addition are the 1.5-2.5% of calcium carbonate dry weight;
(3)Nano-calcium carbonate slurry is delivered to ultrasonic stirrer, and is heated to 60-80 DEG C, is added by rape oil fatty acid The surface conditioning agent of alkanolamide borate and Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane composition, the addition of surface conditioning agent Amount is the 1.5-3% of calcium carbonate dry weight, and 20-30min is stirred by ultrasonic, obtains modified nano calcium carbonate slurry;
(4)Modified nano calcium carbonate slurry dry, pulverize to get modified nano calcium carbonate again.
As currently preferred technical solution:The mass ratio of phytic acid and tartaric acid is 1 in the chemical additives:1-3.
As currently preferred technical solution:The dispersant is 1-3 by mass ratio:1 polyoxyethylene glycerol ether list Stearate and the sulfonated rilanit special composition of succinate.
As currently preferred technical solution:Rape oil fatty acid alkanolamide borate and ten in the surface conditioning agent The mass ratio of difluoro heptyl propyl cage-type silsesquioxane is 1:1-3.
As currently preferred technical solution:Step(1)Be by quick lime and 50-60 DEG C of hot water according to mass ratio it is 1: 4-6 carries out digestion reaction.
Another object of the present invention is to provide the flame retardant type nano-calcium carbonates in the application of PVC board, the PVC board Material includes the raw material of following parts by weight:100 parts of polyvinyl chloride resin, 5-10 parts of ethylene-vinyl acetate copolymer, 50-100 parts of wood powder, 40-70 parts of modified nano calcium carbonate, 3-5 parts of boron nitride, 3-5 parts of glass fibre, 4-6 parts of oyster shell whiting, neopelex 2-4 parts, dimethyl silicone polymer 1-3 parts polyether-modified, 4-6 parts of composite foamable agent, 1-3 parts of coupling agent, 2-4 parts of stabilizer, profit 3-5 parts of 1-3 parts of lubrication prescription, 0.5-1.5 parts of antiseptic and processing aid.
As currently preferred technical solution:The composite foamable agent is 1-3 by mass ratio:1 AC foaming agents and pine Fragrant acid sucrose ester composition.
As currently preferred technical solution:The coupling agent is made of polyetherimide and Lü Zuqian.
As currently preferred technical solution:The lubricant is made of PE waxes and castor oil polyoxyethylene ether.
As currently preferred technical solution:The antiseptic is 1-3 by mass ratio:1 chitosan and ceria group At.
As currently preferred technical solution:The processing aid is 1-3 by mass ratio:1 polyoxyethylene nonyl phenyl second Alkene ether and poly- aminopropyltriethoxy silsesquioxane composition.
The preparation method of PVC board of the present invention, includes the following steps:
S1:Above-mentioned each raw material is weighed according to above-mentioned formula, by wood powder, modified nano calcium carbonate, boron nitride, glass fibre, shell Blender is added in powder, neopelex, polyether-modified dimethyl silicone polymer, obtains modified mixture;
S2:Homogenizer is added in polyvinyl chloride resin and ethylene-vinyl acetate copolymer resin, is warming up to 100-120 DEG C, then add Enter modified mixture, composite foamable agent, coupling agent, stabilizer, lubricant, antiseptic and processing aid, stir evenly, must mix Material;
S3:Said mixture material is delivered to conical double screw extruder, extrusion molding at being 160-180 DEG C in temperature is cooling Sizing is to get PVC board.
Compared with prior art, it advantages of the present invention and has the beneficial effect that:
1, nano-calcium carbonate used in PVC wood plastic plank of the present invention is added in carbonation is made of phytic acid and tartaric acid Chemical additives, can be very good control calcium carbonate crystallite dimension and stability, since the special construction of phytic acid can also carry The anti-flammability of the compatibility and raising calcium carbonate of the mechanical property of high carbon acid calcium and other components.
2, the present invention is added during calcium carbonate reaction by polyoxyethylene glycerol ether monostearate and succinate sulphur It is acidified the dispersant of rilanit special composition, the dispersibility of reaction system is improved, agglomerated calcium carbonate particle can be effectively prevent It generates, rape oil fatty acid alkanolamide borate and Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane is further used to carry out surface It is modified, since the two is inorganic-organic hybridization structure, in calcium carbonate particle surface introducing silicon oxygen bond, amide, carboxyl, boric acid, have The groups such as machine fluorine can not only improve the dispersibility of calcium carbonate and the compatibility with polyvinyl chloride resin, due to each group and PVC wood plastic System forming network structure improves PVC wood plastic reaction system interfacial adhesion so that and calcium carbonate achievees the effect that enhancing benefit is tough, Anti-flammability, notch impact strength, tensile break strength, heat resistance and the anti-aging property of PVC wood plastic plank can also be improved.
3, PVC wood plastic plank provided by the invention due to unique composition of raw materials and each component coordinative role, preparation PVC wood plastic plank has high intensity, high tenacity, shock resistance strong, good flame resistance, bacteriostasis antibiosis strong, wear-resisting, heat-resisting, no Yielding, the advantages that stability is good, it can be widely used in the building fields such as timber floor, ceiling, wallboard, wide market.
4, in the formula of PVC board of the present invention using polyvinyl chloride resin as primary raw material, then to be equipped with ethene-vinyl acetate total Polymers improves compatibility, toughness, impact resistance, heat resistance and the inoxidizability of plank system, effectively overcomes polyvinyl chloride resin certainly The defects of body is brittle, thermo-labile.
5, the present invention utilizes neopelex, polyether-modified polydimethylsiloxane--modified boron nitride, glass fibers Dimension, oyster shell whiting etc., since the Si-O-C in polyether-modified dimethyl silicone polymer molecule can assign excellent anti-flammability, anti-ageing Change, weatherability etc., and be equipped with and use the compatibility that can be improved with PVC board system with neopelex.
6, the foaming agent that the present invention uses makes product uniform foam cell, the interaction force between feed change molecule carry The mechanical property of high product;Used lubricant not only improves the dispersibility and processing fluidity of system, moreover it is possible to improve compound The finish and intensity of plank.
7, the coupling agent of the invention used in PVC board formula is a kind of with various actives such as amide, carboxyl, carbonyls The organic matter of group, itself can form network structure, and the active group in network structure can form dual network with the effect of resin Network structure, improves the degree of cross linking and reinforcement;Used processing aid is remarkably improved the dispersibility of entire reaction system and adds Work performance improves the finish of product, moreover it is possible to improve the heat resistance and toughening effect of product.
8, the present invention is using chitosan and ceria as antiseptic, to Escherichia coli, Huang under room temperature or high-temperature condition Golden staphylococci, fungi etc. have significant antibacterial and fungistatic effect, and chitosan can also improve the inoxidizability of plank.
9, the present invention has widened the industrial chain of shell using oyster shell whiting as raw material, and oyster shell whiting has Escherichia coli extremely strong antibacterial And bactericidal effect, in addition also there is remarkable result to salmonella, yellow glucose fungus, and have the function of anti-corrosion, anti-tick, shellfish Shell powder can also improve the flame retardant property of plank, can absorb the harmful substances such as formaldehyde, the benzene in air.
Specific implementation mode
Technical scheme of the present invention is further described below in conjunction with specific embodiment, but is not limited to the present invention's Protection domain.
Embodiment 1
A kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate, includes the following steps:
(1)According to mass ratio it is 1 by quick lime and 50-60 DEG C of hot water:5, which are added digestion reactor, carries out digestion reaction, and removal of impurities is quiet Ageing 48h is set, it is 1.060 to be diluted to proportion, obtains lime slurry;
(2)Lime slurry is delivered to carbonation reaction tower, carbon dioxide is passed through and carries out carburizing reagent, be added in carbonisation Chemical additives and dispersant, carbonization to pH value are 7, and stopping is passed through carbon dioxide, and the specific surface area for controlling calcium carbonate is 32.4m2/ g obtains nano-calcium carbonate slurry;The chemical additives are 1 by mass ratio:2 phytic acid and tartaric acid composition, are added Amount is the 1.5% of calcium carbonate dry weight;The dispersant is 2 by mass ratio:1 polyoxyethylene glycerol ether monostearate and amber The sulfonated rilanit special composition of amber acid esters, addition is the 1.8% of calcium carbonate dry weight;
(3)Nano-calcium carbonate slurry is delivered to ultrasonic stirrer, and is heated to 70 DEG C, it is 1 to add by mass ratio:2 dishes The surface conditioning agent of fatty acid oil alkanolamide borate and Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane composition, surface treatment The addition of agent is the 3% of calcium carbonate dry weight, and 25min is stirred by ultrasonic, obtains modified nano calcium carbonate slurry;
(4)Modified nano calcium carbonate slurry dry, pulverize to get modified nano calcium carbonate again.
For modified nano calcium carbonate made from this example in the application of PVC board, the PVC board includes following parts by weight Raw material:100 parts of polyvinyl chloride resin, 8 parts of ethylene-vinyl acetate copolymer, 60 parts of wood powder, 65 parts of modified nano calcium carbonate, boron nitride 4 Part, is answered at 4 parts of glass fibre, 5 parts of oyster shell whiting, 3.5 parts of neopelex, 2.5 parts of polyether-modified dimethyl silicone polymer Close 4 parts of 5 parts of foaming agent, 2 parts of coupling agent, 3 parts of calcium zinc stabilizer, 1.5 parts of lubricant, 1 part of antiseptic and processing aid.
The composite foamable agent is 2 by mass ratio:1 AC foaming agents and Sucrose Ester of Rosin Acid composition.The coupling agent by Mass ratio is 1:3 polyetherimide and Lü Zuqian composition.The lubricant is 2 by mass ratio:1 PE waxes and Castor oil polyoxyethylene ether forms.The antiseptic is 3 by mass ratio:1 chitosan and ceria composition.The processing aid It is 3 by mass ratio:1 polyoxyethylene nonyl phenyl vinethene and poly- aminopropyltriethoxy silsesquioxane composition.
The preparation method of the PVC board, includes the following steps:
S1:Above-mentioned each raw material is weighed according to above-mentioned formula, by wood powder, modified nano calcium carbonate, boron nitride, glass fibre, shell Blender is added in powder, neopelex, polyether-modified dimethyl silicone polymer, obtains modified mixture;
S2:Homogenizer is added in polyvinyl chloride resin and ethylene-vinyl acetate copolymer resin, 100 DEG C is warming up to, adds and change Property mixture, composite foamable agent, coupling agent, stabilizer, lubricant, antiseptic and processing aid, stir evenly, obtain mixture Material;
S3:Said mixture material is delivered to conical double screw extruder, extrusion molding at being 160-180 DEG C in temperature is cooling Sizing is to get PVC board.
Embodiment 2
A kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate, includes the following steps:
(1)According to mass ratio it is 1 by quick lime and 55 DEG C of hot water:4, which are added digestion reactor, carries out digestion reaction, cleans, stands It is aged 36h, it is 1.065 to be diluted to proportion, obtains lime slurry;
(2)Lime slurry is delivered to carbonation reaction tower, carbon dioxide is passed through and carries out carburizing reagent, be added in carbonisation Chemical additives and dispersant, carbonization to pH value are 7.5, and stopping is passed through carbon dioxide, and the specific surface area for controlling calcium carbonate is 28.3m2/ g obtains nano-calcium carbonate slurry;The chemical additives are 1 by mass ratio:2 phytic acid and tartaric acid composition, are added Amount is the 2% of calcium carbonate dry weight;The dispersant is 1 by mass ratio:1 polyoxyethylene glycerol ether monostearate and amber The sulfonated rilanit special composition of acid esters, addition is the 2% of calcium carbonate dry weight;
(3)Nano-calcium carbonate slurry is delivered to ultrasonic stirrer, and is heated to 80 DEG C, it is 1 to add by mass ratio:1 dish The surface conditioning agent of fatty acid oil alkanolamide borate and Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane composition, surface treatment The addition of agent is the 2% of calcium carbonate dry weight, and 20min is stirred by ultrasonic, obtains modified nano calcium carbonate slurry;
(4)Modified nano calcium carbonate slurry dry, pulverize to get modified nano calcium carbonate again.
For modified nano calcium carbonate made from this example in the application of PVC board, the PVC board includes following parts by weight Raw material:100 parts of polyvinyl chloride resin, 10 parts of ethylene-vinyl acetate copolymer, 80 parts of wood powder, 50 parts of modified nano calcium carbonate, boron nitride 3 It is part, 5 parts of glass fibre, 4.5 parts of oyster shell whiting, 2 parts of neopelex, 3 parts of polyether-modified dimethyl silicone polymer, compound 5 parts of 4 parts of foaming agent, 1.5 parts of coupling agent, 4 parts of calcium zinc stabilizer, 3 parts of lubricant, 0.5 part of antiseptic and processing aid.
The composite foamable agent is 3 by mass ratio:1 AC foaming agents and Sucrose Ester of Rosin Acid composition.The coupling agent by Mass ratio is 1:2 polyetherimide and Lü Zuqian composition.The lubricant is 1 by mass ratio:3 PE waxes and Castor oil polyoxyethylene ether forms.The antiseptic is 2 by mass ratio:1 chitosan and ceria composition.The processing aid It is 1.5 by mass ratio:1 polyoxyethylene nonyl phenyl vinethene and poly- aminopropyltriethoxy silsesquioxane composition.
The preparation method of the PVC board, includes the following steps:
S1:Above-mentioned each raw material is weighed according to above-mentioned formula, by wood powder, modified nano calcium carbonate, boron nitride, glass fibre, shell Blender is added in powder, neopelex, polyether-modified dimethyl silicone polymer, obtains modified mixture;
S2:Homogenizer is added in polyvinyl chloride resin and ethylene-vinyl acetate copolymer resin, 120 DEG C is warming up to, adds and change Property mixture, composite foamable agent, coupling agent, stabilizer, lubricant, antiseptic and processing aid, stir evenly, obtain mixture Material;
S3:Said mixture material is delivered to conical double screw extruder, extrusion molding at being 160-180 DEG C in temperature is cooling Sizing is to get PVC board.
Embodiment 3
A kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate, includes the following steps:
(1)According to mass ratio it is 1 by quick lime and 50 DEG C of hot water:5, which are added digestion reactor, carries out digestion reaction, cleans, stands It is aged 36h, it is 1.060 to be diluted to proportion, obtains lime slurry;
(2)Lime slurry is delivered to carbonation reaction tower, carbon dioxide is passed through and carries out carburizing reagent, be added in carbonisation Chemical additives and dispersant, carbonization to pH value are 8, and stopping is passed through carbon dioxide, and the specific surface area for controlling calcium carbonate is 36.9m2/ g obtains nano-calcium carbonate slurry;The chemical additives are 1 by mass ratio:1 phytic acid and tartaric acid composition, are added Amount is the 1.5% of calcium carbonate dry weight;The dispersant is 2 by mass ratio:1 polyoxyethylene glycerol ether monostearate and amber The sulfonated rilanit special composition of amber acid esters, addition is the 1.8% of calcium carbonate dry weight;
(3)Nano-calcium carbonate slurry is delivered to ultrasonic stirrer, and is heated to 60 DEG C, it is 1 to add by mass ratio:3 dishes The surface conditioning agent of fatty acid oil alkanolamide borate and Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane composition, surface treatment The addition of agent is the 2.5% of calcium carbonate dry weight, and 30min is stirred by ultrasonic, obtains modified nano calcium carbonate slurry;
(4)Modified nano calcium carbonate slurry dry, pulverize to get modified nano calcium carbonate again.
For modified nano calcium carbonate made from this example in the application of PVC board, the PVC board includes following parts by weight Raw material:100 parts of polyvinyl chloride resin, 8 parts of ethylene-vinyl acetate copolymer, 70 parts of wood powder, 60 parts of modified nano calcium carbonate, boron nitride 4 It is part, 3.5 parts of glass fibre, 6 parts of oyster shell whiting, 3 parts of neopelex, 2 parts of polyether-modified dimethyl silicone polymer, compound 4 parts of 5 parts of foaming agent, 2.5 parts of coupling agent, 3 parts of organic tin stabilizer, 2 parts of lubricant, 1.2 parts of antiseptic and processing aid.
The composite foamable agent is 1.5 by mass ratio:1 AC foaming agents and Sucrose Ester of Rosin Acid composition.The coupling agent It is 1 by mass ratio:4 polyetherimide and Lü Zuqian composition.The lubricant is 1 by mass ratio:1 PE waxes It is formed with castor oil polyoxyethylene ether.The antiseptic is 1 by mass ratio:1 chitosan and ceria composition.The processing helps Agent is 3 by mass ratio:1 polyoxyethylene nonyl phenyl vinethene and poly- aminopropyltriethoxy silsesquioxane composition.
The preparation method of the PVC board, includes the following steps:
S1:Above-mentioned each raw material is weighed according to above-mentioned formula, by wood powder, modified nano calcium carbonate, boron nitride, glass fibre, shell Blender is added in powder, neopelex, polyether-modified dimethyl silicone polymer, obtains modified mixture;
S2:Homogenizer is added in polyvinyl chloride resin and ethylene-vinyl acetate copolymer resin, 110 DEG C is warming up to, adds and change Property mixture, composite foamable agent, coupling agent, stabilizer, lubricant, antiseptic and processing aid, stir evenly, obtain mixture Material;
S3:Said mixture material is delivered to conical double screw extruder, extrusion molding at being 160-180 DEG C in temperature is cooling Sizing is to get PVC board.
Embodiment 4
A kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate, includes the following steps:
(1)According to mass ratio it is 1 by quick lime and 60 DEG C of hot water:4, which are added digestion reactor, carries out digestion reaction, cleans, stands It is aged 48h, it is 1.065 to be diluted to proportion, obtains lime slurry;
(2)Lime slurry is delivered to carbonation reaction tower, carbon dioxide is passed through and carries out carburizing reagent, be added in carbonisation Chemical additives and dispersant, carbonization to pH value are 7, and stopping is passed through carbon dioxide, and the specific surface area for controlling calcium carbonate is 29.3m2/ g obtains nano-calcium carbonate slurry;The chemical additives are 1 by mass ratio:3 phytic acid and tartaric acid composition, are added Amount is the 2% of calcium carbonate dry weight;The dispersant is 1.5 by mass ratio:1 polyoxyethylene glycerol ether monostearate and amber The sulfonated rilanit special composition of amber acid esters, addition is the 2.5% of calcium carbonate dry weight;
(3)Nano-calcium carbonate slurry is delivered to ultrasonic stirrer, and is heated to 70 DEG C, it is 1 to add by mass ratio:2 dishes The surface conditioning agent of fatty acid oil alkanolamide borate and Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane composition, surface treatment The addition of agent is the 1.5% of calcium carbonate dry weight, and 30min is stirred by ultrasonic, obtains modified nano calcium carbonate slurry;
(4)Modified nano calcium carbonate slurry dry, pulverize to get modified nano calcium carbonate again.
For modified nano calcium carbonate made from this example in the application of PVC board, the PVC board includes following parts by weight Raw material:100 parts of polyvinyl chloride resin, 7 parts of ethylene-vinyl acetate copolymer, 90 parts of wood powder, 50 parts of modified nano calcium carbonate, boron nitride 3 It is part, 4 parts of glass fibre, 5 parts of oyster shell whiting, 4 parts of neopelex, 1.5 parts of polyether-modified dimethyl silicone polymer, compound 3 parts of 6 parts of foaming agent, 1.5 parts of coupling agent, 3.5 parts of organic tin stabilizer, 3 parts of lubricant, 1.5 parts of antiseptic and processing aid.
The composite foamable agent is 2 by mass ratio:1 AC foaming agents and Sucrose Ester of Rosin Acid composition.The coupling agent by Mass ratio is 1:2 polyetherimide and Lü Zuqian composition.The lubricant is 2 by mass ratio:1 PE waxes and Castor oil polyoxyethylene ether forms.The antiseptic is 3 by mass ratio:1 chitosan and ceria composition.The processing aid It is 2 by mass ratio:1 polyoxyethylene nonyl phenyl vinethene and poly- aminopropyltriethoxy silsesquioxane composition.
The preparation method of the PVC board, includes the following steps:
S1:Above-mentioned each raw material is weighed according to above-mentioned formula, by wood powder, modified nano calcium carbonate, boron nitride, glass fibre, shell Blender is added in powder, neopelex, polyether-modified dimethyl silicone polymer, obtains modified mixture;
S2:Homogenizer is added in polyvinyl chloride resin and ethylene-vinyl acetate copolymer resin, 120 DEG C is warming up to, adds and change Property mixture, composite foamable agent, coupling agent, stabilizer, lubricant, antiseptic and processing aid, stir evenly, obtain mixture Material;
S3:Said mixture material is delivered to conical double screw extruder, extrusion molding at being 160-180 DEG C in temperature is cooling Sizing is to get PVC board.
PVC board prepared by the embodiment 1-4 conventionally tensile strength of determination sample, curved Qu Qiangdu, impact strength, heat distortion temperature, oxygen index (OI) and Escherichia coli sterilizing rate, test result are as shown in table 1 for 24 hours.
Table 1:The performance test results of PVC wood plastic plank of the present invention
It is learnt from above-mentioned test result, PVC board prepared by the present invention has excellent intensity, impact resistance, heat resistance, fire-retardant Property and anti-microbial property, wide market.

Claims (10)

1. a kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate, which is characterized in that include the following steps:
Digestion reactor is added in quick lime and hot water and carries out digestion reaction, removal of impurities is still aging, and dilution obtains lime slurry;
Lime slurry is delivered to carbonation reaction tower, carbon dioxide is passed through and carries out carburizing reagent, is added in carbonisation brilliant Type controlling agent and dispersant, carbonization to pH value are 7-8, and stopping is passed through carbon dioxide, and the specific surface area for controlling calcium carbonate is 25- 40m2/ g obtains nano-calcium carbonate slurry;The chemical additives are made of phytic acid and tartaric acid, and addition is calcium carbonate butt The 1-2% of weight;The dispersant is by polyoxyethylene glycerol ether monostearate and the sulfonated rilanit special group of succinate At addition is the 1.5-2.5% of calcium carbonate dry weight;
(3)Nano-calcium carbonate slurry is delivered to ultrasonic stirrer, and is heated to 60-80 DEG C, is added by rape oil fatty acid The surface conditioning agent of alkanolamide borate and Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane composition, the addition of surface conditioning agent Amount is the 1.5-3% of calcium carbonate dry weight, and 20-30min is stirred by ultrasonic, obtains modified nano calcium carbonate slurry;
(4)Modified nano calcium carbonate slurry dry, pulverize to get modified nano calcium carbonate again.
2. the method for modifying of flame retardant type PVC board timber-used nano-calcium carbonate according to claim 1, it is characterised in that:The crystalline substance The mass ratio of phytic acid and tartaric acid is 1 in type controlling agent:1-3.
3. the method for modifying of flame retardant type PVC board timber-used nano-calcium carbonate according to claim 1, it is characterised in that:Described point Powder is 1-3 by mass ratio:The 1 sulfonated rilanit special composition of polyoxyethylene glycerol ether monostearate and succinate.
4. the method for modifying of flame retardant type PVC board timber-used nano-calcium carbonate according to claim 1, it is characterised in that:The table The mass ratio of rape oil fatty acid alkanolamide borate and Dodecafluoroheptyl-propyl polyhedral oligomeric silsesquioxane is 1 in surface treatment agent: 1-3。
5. the method for modifying of flame retardant type PVC board timber-used nano-calcium carbonate according to claim 1, it is characterised in that:Step(1) Be by quick lime and 50-60 DEG C of hot water according to mass ratio it is 1:4-6 carries out digestion reaction.
6. a kind of flame retardant type nano-calcium carbonate as described in claim 1 is in the application of PVC board, it is characterised in that:The PVC board Material includes the raw material of following parts by weight:100 parts of polyvinyl chloride resin, 5-10 parts of ethylene-vinyl acetate copolymer, 50-100 parts of wood powder, 40-70 parts of modified nano calcium carbonate, 3-5 parts of boron nitride, 3-5 parts of glass fibre, 4-6 parts of oyster shell whiting, neopelex 2-4 parts, dimethyl silicone polymer 1-3 parts polyether-modified, 4-6 parts of composite foamable agent, 1-3 parts of coupling agent, 2-4 parts of stabilizer, profit 3-5 parts of 1-3 parts of lubrication prescription, 0.5-1.5 parts of antiseptic and processing aid.
7. application of the flame retardant type nano-calcium carbonate in PVC board according to claim 6, it is characterised in that:The compound hair Infusion is 1-3 by mass ratio:1 AC foaming agents and Sucrose Ester of Rosin Acid composition.
8. application of the flame retardant type nano-calcium carbonate in PVC board according to claim 6, it is characterised in that:The antiseptic It is 1-3 by mass ratio:1 chitosan and ceria composition.
9. application of the flame retardant type nano-calcium carbonate in PVC board according to claim 6, it is characterised in that:The processing helps Agent is 1-3 by mass ratio:1 polyoxyethylene nonyl phenyl vinethene and poly- aminopropyltriethoxy silsesquioxane composition.
10. the preparation method of PVC board as claimed in claim 6, it is characterised in that:Include the following steps:
S1:Above-mentioned each raw material is weighed according to above-mentioned formula, by wood powder, modified nano calcium carbonate, boron nitride, glass fibre, shell Blender is added in powder, neopelex, polyether-modified dimethyl silicone polymer, obtains modified mixture;
S2:Homogenizer is added in polyvinyl chloride resin and ethylene-vinyl acetate copolymer resin, is warming up to 100-120 DEG C, then add Enter modified mixture, composite foamable agent, coupling agent, stabilizer, lubricant, antiseptic and processing aid, stir evenly, must mix Material;
S3:Said mixture material is delivered to conical double screw extruder, extrusion molding at being 160-180 DEG C in temperature is cooling Sizing is to get PVC board.
CN201810718437.7A 2018-06-30 2018-06-30 A kind of method of modifying of flame retardant type PVC board timber-used nano-calcium carbonate and its application Pending CN108794931A (en)

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CN111662575A (en) * 2020-06-12 2020-09-15 广西夏阳环保科技有限公司 Modified bentonite for plastics and paint
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CN116144198A (en) * 2023-02-15 2023-05-23 广西平果市润丰钙新材料科技有限公司 Antifogging agent special for transparent polyolefin film
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109608786A (en) * 2018-12-07 2019-04-12 成都玉龙化工有限公司 A kind of high-impact pressure resistance PVC composite material and preparation method
CN110883895A (en) * 2019-12-25 2020-03-17 李亚东 Composite biological synthetic wood floor and production process thereof
CN111440461A (en) * 2020-04-30 2020-07-24 广西夏阳环保科技有限公司 Preparation method of calcium carbonate special for plastics and coatings
CN111573707A (en) * 2020-04-30 2020-08-25 广西夏阳环保科技有限公司 Preparation method of calcium carbonate filler special for papermaking
CN111662575A (en) * 2020-06-12 2020-09-15 广西夏阳环保科技有限公司 Modified bentonite for plastics and paint
CN113088102A (en) * 2021-03-31 2021-07-09 广西贺州市科隆粉体有限公司 Preparation method of heavy calcium carbonate for high-activation-degree silicone adhesive
CN116144198A (en) * 2023-02-15 2023-05-23 广西平果市润丰钙新材料科技有限公司 Antifogging agent special for transparent polyolefin film
CN116144198B (en) * 2023-02-15 2024-05-28 广西平果市润丰钙新材料科技有限公司 Antifogging agent special for transparent polyolefin film
CN117699842A (en) * 2024-01-11 2024-03-15 上海碳酸钙厂有限公司 Preparation method of active nano calcium carbonate
CN117699842B (en) * 2024-01-11 2024-06-04 上海碳酸钙厂有限公司 Preparation method of active nano calcium carbonate

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Application publication date: 20181113