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 PDFInfo
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- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
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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
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.
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| 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 |
| 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 |
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Cited By (10)
| 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 |