WO2015041443A1 - 염화비닐계 나노복합체 조성물 및 염화비닐계 나노복합체의 제조방법 - Google Patents
염화비닐계 나노복합체 조성물 및 염화비닐계 나노복합체의 제조방법 Download PDFInfo
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
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- C08K3/00—Use of inorganic substances as compounding ingredients
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- C08K3/013—Fillers, pigments or reinforcing additives
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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- 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
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- 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
- C08K3/36—Silica
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- 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
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- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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- C08L35/00—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 carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- 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
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
Definitions
- the present invention relates to a vinyl chloride-based nanocomposite composition and a method for producing a vinyl chloride-based nanocomposite, and more particularly, to prepare an aqueous dispersion suspension from a vinyl chloride-based nanocomposite composition based on a hydrophilic composition, and to prepare a protective colloid preparation and polymerization.
- the present invention relates to a method for preparing a straight vinyl chloride-based nanocomposite in which nanomaterials are uniformly dispersed by including vinyl chloride monomer in suspension polymerization in the presence of an initiator.
- Vinyl chloride-based polymers are inexpensive and have excellent quality balance and are used in various fields.
- the vinyl chloride polymer is largely divided into a paste resin and a straight resin.
- the paste resin is prepared by an emulsion polymerization method, and homogenizes monomers, water, and surfactants using a homogenizing apparatus, and then transfers to a polymerization apparatus to polymerize it, which is used for wallpaper and flooring.
- the straight resin is prepared by a suspension polymerization method, and divided into soft and hard products according to the use.
- Conventional soft products are used in the field of wire coating, wrap film, sheet, etc. by using a large amount of plasticizer, and hard products are mixed with various additives such as impact modifiers, heat stabilizers, processing aids, pigments, and inorganic fillers. It is used in a wide range of fields such as window frames.
- the vinyl chloride polymer itself has a disadvantage of weak heat resistance, impact resistance and mechanical strength, so as to compensate for this, a thermal stabilizer, an impact modifier, and an inorganic material are added.
- a thermal stabilizer, an impact modifier, and an inorganic material are added.
- the inorganic material calcium carbonate, silica, titanium Vinyl chloride-based composites are prepared using various materials such as oxides, clays, carbon blacks, and zinc oxides. In recent years, technologies for manufacturing and using nanoscale composites have been developed.
- nanocomposites refer to those composed of two or more kinds of structures or materials and whose phase size corresponds to the nanoscale (10 ⁇ 9 m).
- the polymer nanocomposite which has greatly improved mechanical strength such as heat resistance and impact resistance by peeling and dispersing nano inorganic materials having a size of 1 nm to 500 nm in the polymer material, has the mechanical strength of the nano inorganic material itself together with the flexibility and processability of the polymer itself. And a combination of heat resistance and the like have attracted great attention in various application fields.
- the nanocomposite can meet the required physical properties when the uniform dispersion of the nano-inorganic material in the polymer material, but in the case of vinyl chloride polymer, it is very difficult to manufacture the nano-composite through the uniform dispersion of the nano-inorganic material, most It is limited to the production of vinyl chloride-based inorganic composites by mechanical mixing of general inorganic materials.
- the present invention is based on a vinyl chloride-based nanocomposite composition consisting of hydrophilic components to improve the water dispersion effect of the nano-inorganic material, and to use it in the vinyl chloride-based suspension polymerization
- An object of the present invention is to provide a straight vinyl chloride-based nanocomposite that achieves uniform dispersion of nano-inorganic materials.
- Vinyl chloride-based nanocomposite composition of the present invention is a hydrophilic nano inorganic material; And at least one hydrophilic polymer selected from unsaturated organic acid polymers or polycarboxylic acid (co) polymers.
- Another object of the present invention is to provide a method for preparing a vinyl chloride-based nanocomposite by applying the vinyl chloride-based nanocomposite composition to suspension polymerization.
- the present invention is a hydrophilic nano-inorganic material; And at least one hydrophilic polymer selected from unsaturated organic acid polymers and polycarboxylic acid (co) polymers.
- the present invention is a hydrophilic nano inorganic material; Hydrophilic polymers selected from one or more of unsaturated organic acid polymers and polycarboxylic acid (co) polymers; Preparing water dispersion suspension by stirring water; preparing a mixed solution by adding and stirring a protective colloid preparation and a vinyl chloride monomer to the aqueous dispersion suspension; It provides a method for producing a vinyl chloride-based nanocomposite comprising a; and adding an initiator to the mixed solution and suspension polymerization.
- the present invention provides a straight vinyl chloride-based nanocomposite prepared by the above production method.
- a straight dispersion in which an aqueous dispersion is prepared from a vinyl chloride-based nanocomposite composition based on a hydrophilic composition, which is included in suspension polymerization of a vinyl chloride monomer in the presence of a protective colloid preparation and a polymerization initiator, is uniformly dispersed in a nanomaterial.
- Figure 2 is a surface (x100) and cross-sectional (x3000) SEM photograph of the vinyl chloride-based organic-inorganic nanocomposite particles containing nanoclay.
- Figure 3 is a surface (x100) and cross-sectional (x3000) SEM photograph of the vinyl chloride-based organic-inorganic nanocomposite particles containing nano calcium carbonate.
- Figure 4 is a surface (x100) and cross-sectional (x3000) SEM photograph of the vinyl chloride-based organic-inorganic nanocomposite particles containing nano titanium oxide.
- Figure 5 is a surface (x100) and cross-sectional (x3000) SEM photograph of the vinyl chloride-based organic-inorganic nanocomposite particles containing nano carbon black.
- Figure 6 is a SEM (x150) photograph of the vinyl chloride organic-inorganic nanocomposite particles obtained when using a simple dispersant commonly used in Comparative Example 1.
- Figure 7 is a graph comparing the thermal stability of the vinyl chloride-based nanocomposites prepared in Example 5 and the vinyl chloride-based resin containing both the hydrophilic nano-inorganic material and the hydrophilic polymer of Comparative Example 2.
- Vinyl chloride-based nanocomposite composition of the present invention is a hydrophilic nano inorganic material; And one or more hydrophilic polymers selected from unsaturated organic acid polymers and polycarboxylic acid (co) polymers, and the water dispersion effect of the hydrophilic nanoinorganic material is improved to have excellent impact strength, processability, and heat resistance.
- hydrophilic nano inorganic material used in the vinyl chloride-based nanocomposite composition of the present invention is used by itself without any treatment when the nano inorganic material is a hydrophilic type, and undergoes hydrophilic treatment when the nano inorganic material is a lipophilic type.
- it may be at least one selected from calcium carbonate, silica, titanium oxide, clay and carbon black, the average particle diameter is 1 to 300 nm, 10 to 200 nm, or 20 to 120 nm, impact strength within this range, Excellent workability and heat resistance
- hydrophilic polymer used in the vinyl chloride-based nanocomposite composition of the present invention, unless otherwise specified, the use of at least one selected from an unsaturated organic acid polymer and a polycarboxylic acid (co) polymer without any treatment.
- the at least one hydrophilic polymer selected from the unsaturated organic acid polymer and the polycarboxylic acid (co) polymer is, for example, 0.1 to 15 parts by weight, 1 to 10 parts by weight, and 3 to about 100 parts by weight of the hydrophilic nano inorganic material. 10 parts by weight, or 3.3 to 10 parts by weight, and within this range, the residual amount of the unsaturated organic acid polymer or polycarboxylic acid (co) polymer in the vinyl chloride-based nanocomposite is reduced, and the dispersion effect of the hydrophilic nano inorganic material is excellent. Whiteness or transparency is improved.
- the unsaturated organic acid polymer is, for example, at least one selected from acrylic acid polymers, methacrylic acid polymers, itaconic acid polymers, fumaric acid polymers, maleic acid polymers, succinic acid polymers, oleic acid polymers, and gelatin.
- the polycarboxylic acid-based (co) polymer is a single polymer or copolymer whose main chain includes the following formula (1).
- R 1 , R 2 and R 3 are each hydrogen, an alkyl group having 1 to 5 carbon atoms,
- M 1 is hydrogen, an alkali metal, an alkaline earth metal, an alkylammonium group having 1 to 10 carbon atoms, or an alkylalcohol ammonium group having 1 to 10 carbon atoms, m 1 is an integer of 0 to 2)
- the alkali metal is, for example, sodium or potassium
- the alkaline earth metal is, for example, magnesium or calcium
- the alkylammonium group having 1 to 10 carbon atoms is, for example, dimethylammonium, methylethylammonium, diethylammonium or trimethylammonium. , Triethylammonium or tetramethylammonium.
- the water dispersion effect is improved and the physical property balance is excellent.
- the alkyl alcohol ammonium group having 1 to 10 carbon atoms is, for example, triethanol ammonium or diisopropanol ammonium. In this case, the water dispersion effect is improved and the physical property balance is excellent.
- polycarboxylic acid-based (co) polymer examples include carboxylic acid, acrylic acid, methacrylic acid, methyl (meth) acrylic acid, ethyl (meth) acrylic acid, trimethylacrylic acid, maleic acid, fumaric acid, itaconic acid, crotonic acid, citraconic acid, vinyl It is a polymer polymerized, including one or more selected from acetic acid, 4-pentenoic acid, and salts thereof, but not the same as the unsaturated organic acid polymer.
- the polycarboxylic acid-based resin has a weight average molecular weight of 10,000 to 100,000 g / mol, or 30,000 to 70,000 g / mol, for example, within this range of the dispersion effect of the hydrophilic nano-inorganic material and compatibility with the vinyl chloride monomer This is excellent.
- the method for producing a vinyl chloride-based nanocomposite using the vinyl chloride-based nanocomposite composition for example, hydrophilic nano-inorganic material; Hydrophilic polymers selected from one or more of unsaturated organic acid polymers and polycarboxylic acid (co) polymers; And water; to prepare an aqueous dispersion suspension; Preparing a mixed solution by adding a protective colloid preparation and a vinyl chloride monomer and stirring the aqueous dispersion; And
- the aqueous dispersion suspension may include, for example, 1 to 20 parts by weight, or 4 to 12 parts by weight of the hydrophilic nano inorganic material, based on 100 parts by weight of water, and has excellent physical balance within this range and hydrophilic nanos during suspension polymerization.
- the water dispersion effect of the inorganic material is improved to improve the physical properties of the vinyl chloride nanocomposite.
- the aqueous dispersion suspension may include, for example, 0.01 to 1.5 parts by weight, or 0.1 to 0.5 parts by weight, based on 100 parts by weight of water, at least one hydrophilic polymer selected from unsaturated organic acid polymers and polycarboxylic acid (co) polymers. In this range, the balance of physical properties is excellent and the water dispersion effect of the hydrophilic nano inorganic material is excellent.
- the aqueous dispersion suspension may be used in suspension polymerization of the vinyl chloride monomer to prepare a straight vinyl chloride nanocomposite.
- Stirring in the step of preparing the aqueous dispersion suspension may be carried out for example 0.1 to 3 hours, or 0.5 to 1.5 hours.
- the mixed solution includes, for example, 100 to 200 parts by weight of an aqueous dispersion suspension, and 0.001 to 5 parts by weight of a protective colloid preparation based on 100 parts by weight of a vinyl chloride monomer.
- the protective colloid preparation is, for example, 0.001 to 5 parts by weight, or 0.01 to 2 parts by weight, the protective colloid property is good within this range, there is an effect that the particle formation is stabilized by reducing the formation of fine particles or granules.
- the protective colloid preparation is, for example, a vinyl alcohol resin having a degree of hydration of 70 to 98% and a viscosity of 4% aqueous solution at 5 to 100 cps at room temperature, 15 to 40% by weight of methoxy group and 3 to 20% by weight of propyl hydroxide. It may be at least one selected from cellulose and unsaturated organic acids having a viscosity of 10 to 20,000 cps at room temperature [2% aqueous solution.
- the protective colloid preparation may be a vinyl alcohol resin having a degree of hydration of 70 to 98%, a vinyl alcohol resin having a degree of hydration of 35 to 60%, or a mixture thereof. It may be a vinyl alcohol resin of%, a vinyl alcohol resin of 50 to 60% hydration, or a mixture thereof.
- the initiator may include, for example, 0.0001 to 0.5 parts by weight, or 0.001 to 0.1 parts by weight based on 100 parts by weight of the vinyl chloride monomer.
- the initiator may be, for example, at least one selected from diacyl peroxides, peroxydicarbonates, peroxy esters, azo compounds, and sulfates.
- the vinyl chloride monomer may be a mixture of a vinyl chloride monomer as well as a vinyl monomer copolymerizable with a vinyl chloride monomer, and in the case of the mixture, the content of the vinyl chloride monomer is 50 wt% or more.
- vinyl monomer copolymerizable with the vinyl chloride monomer examples include olefin compounds such as ethylene or propylene, vinyl esters such as vinyl acetate or vinyl propionate, unsaturated nitriles such as acrylonitrile, vinyl methyl ether or vinyl ethyl ether. And vinyl alkyl ethers, and the like, and one or more selected from these may be mixed with a vinyl chloride monomer.
- the suspension polymerization can be terminated, for example, by the addition of a reaction terminator and the slurry can be carried out in a conventional drying step.
- the reaction may be terminated at a time point at which the reactor pressure is 6.0 to 8.0 kg / cm 2, ie, the polymerization conversion is 80 to 90%, or 83 to 88%.
- the reaction terminator may be any kind generally used for preparing a vinyl chloride-based resin, and may be, for example, a phenol compound, an amine compound, a nitrile compound, or a sulfur compound.
- phenolic compounds examples include triethylene glycol-bis-3- (3-t-butyl-4-hydroxy-5-methylphenyl) propionate, hydroquinone, p-methoxy phenol and t-butylhydroxy.
- Sol n-octadecyl-3- (4-hydroxy-3,5-di-t-butylphenyl) propionate, 2,5-di-t-butyl hydroquinone, 4,4-butylidenebis (3-methyl-6-t-butyl phenol), t-butyl catechol, 4,4-thiobis (6-t-butyl-m-cresol) or tocopherol, and as an amine compound, for example, N, N -Diphenyl-p-phenylenediamine or 4,4-bis (dimethylbenzyl) diphenyl amine, and examples of the nitrile compound include 2-phenyl nitroyl nitroxide, 3-imidazoline nitroxide, or 4-hydroxy-2
- a polymerization regulator may be separately added or continuously added before the start of the polymerization, after the polymerization, or during the polymerization process.
- the method for producing a vinyl chloride-based nanocomposite by suspension polymerization of the present invention is, for example, to prepare a hydrophilic nanoinorganic water-dispersion suspension containing an unsaturated organic acid or a polycarboxylic acid-based polymer, and before the reaction in the presence of a protective colloid preparation and a polymerization initiator.
- the polyvinyl chloride-based nanocomposites may be prepared by suspending and polymerizing a vinyl chloride-based monomer while maintaining the polymerization reference temperature according to the average degree of polymerization at a polymerization temperature.
- the polymerization reference temperature is determined by the average degree of polymerization to be targeted, the polymerization reference temperature is in the range of 30 to 80 °C.
- the polymerization reference temperature is different for each facility property or manufacturer, it is difficult to select conditions for all cases of the target average degree of polymerization, but for example, when the average degree of polymerization of 800 is targeted, the polymerization reference temperature is 63 to 60 to 62 °C when aiming at 65 °C, the average degree of polymerization 900, the polymerization reference temperature is 56 to 58 °C when aiming at 1000, the polymerization reference temperature is 52 to 54 °C, and average when aiming at an average degree of polymerization of 1300 If the degree of polymerization 1700 is aimed to be within the range of 47 to 49 °C. In addition, when the polymerization reference temperature is lower than 30 ° C or higher than 80 ° C, the target average degree of polymerization may be lower than 700 or higher than 1700.
- the degree of polymerization of the vinyl chloride-based nanocomposite may vary depending on the polymerization temperature, for example, may be 680 to 2500 or 680 to 1100.
- a stirring device generally used for suspension polymerization of vinyl chloride-based resin is used.
- the stirring blade type is a paddle type, a pitch paddle type, a blue A stirrer can be used alone or in combination with two or more stirring blades such as bloomers gin type, pfaudler type, turbine type and propeller type.
- D type, loop type or finger type can be used.
- the slurry of the vinyl chloride-based nanocomposite is prepared by removing moisture with a fluidized bed dryer under normal reaction conditions to produce a vinyl chloride-based nanocomposite.
- a vinyl chloride-based nanocomposite prepared by the method for producing a vinyl chloride-based nanocomposite.
- the vinyl chloride-based nanocomposite is characterized in that the hydrophilic nano-inorganic material is uniformly contained, for example, the hydrophilic nano-inorganic material is an example of the content ratio of coarse particles having an average particle diameter of 100 nm or more and fine particles having an average particle diameter of 5 nm or less In the range of 95: 5 to 99: 1, the physical property balance may be excellent within this range.
- the reaction was carried out while maintaining the temperature at 57 ° C. to achieve an average degree of polymerization of 1000, aimed at the reaction temperature, and 4-hydroxy as a terminator when the polymerization reactor pressure reached 6.0 kg / cm 2 . 15 g of -2,2,6,6-tetramethyl-piperidine-1-oxyl, 60 g of triethylene glycol-bis-3- (3-t-butyl-4-hydroxy-5-methylphenyl) propionate After addition, unreacted monomer was recovered and the resin slurry was recovered in the polymerization reactor.
- the obtained slurry was dried in a fluidized bed dryer in a conventional manner to obtain a vinyl chloride-based nanocomposite.
- Example 1 30 kg of nano clay having a size of 120 nm was used instead of nano silica having a size of 80 nm, and 1.0 kg of polyfumaric acid was used as an unsaturated organic acid polymer instead of 1.5 kg of a polycarboxylic acid-based (co) polymer.
- the polymerization was carried out under the same conditions as in Example 1.
- the tensile strength was 650 Kg / cm 2
- the transparency measured in the same manner as in Example 1 was 77.2.
- Example 1 20 kg of nano calcium carbonate having a size of 40 nm is used instead of nano silica having a size of 80 nm, and the average polymerization degree 800 is used instead of 57 ° C. to achieve an average degree of polymerization of 1000 during the entire polymerization process. allowed to proceed the reaction while maintaining the 65 °C to achieve, the same conditions as example 1, but at a time reaches the polymerization reactor pressure 6.0 kg / cm 2 instead of 8.0 kg / cm 2 to the input of the reaction species payment The polymerization was carried out under.
- a composite stabilizer (product name WPS-60) including a heat stabilizer and a lubricant, 100 parts by weight of the vinyl chloride-based nanocomposite, 1.5 parts by weight of a processing aid (product name PA-828), and 2 parts by weight of titanium oxide.
- WPS-60 composite stabilizer
- PA-828 processing aid
- titanium oxide titanium oxide
- Example 1 15 kg of nano titanium oxide having a size of 20 nm is used instead of nano silica having a size of 80 nm, and the average polymerization degree 800 is used instead of 57 ° C. to achieve an average degree of polymerization 1000 during the entire polymerization process. allowed to proceed the reaction while maintaining the 65 °C to achieve, the same conditions as example 1, but at a time reaches the polymerization reactor pressure 6.0 kg / cm 2 instead of 8.0 kg / cm 2 to the input of the reaction species payment The polymerization was carried out under.
- WI L (L-5.7 X b) / 100-4
- Example 1 instead of nano silica having a size of 80 nm, 10 kg of nano carbon black having a size of 40 nm is used, and polyvinyl acetate copolymer is used as an unsaturated organic acid polymer instead of 1.5 kg of a polycarboxylic acid-based (co) polymer.
- the reaction proceeds while 1.0 kg is used and the reaction temperature is maintained at 65 ° C. to achieve an average degree of polymerization 800 instead of 57 ° C. to achieve an average degree of polymerization of 1000 during the course of the polymerization reaction, and instead of 6.0 kg / cm 2 of the reactor pressure.
- the polymerization was carried out under the same conditions as in Example 1 except that the reaction terminator was added at the point of reaching 8.0 kg / cm 2 .
- thermal stability measurement conditions are as follows.
- FIGS. 1 to 5 SEM pictures of the surfaces and cross sections of the vinyl chloride nanocomposites prepared in Examples 1 to 5 are shown in FIGS. 1 to 5.
- Example 1 15 kg of nano calcium carbonate having a size of 80 nm was used instead of nano silica having a size of 80 nm, except that 1.5 kg of lauryl phosphate was used instead of 1.5 kg of a polycarboxylic acid-based (co) polymer.
- the polymerization was carried out under the same conditions as in Example 1.
- the dispersion of the nano-inorganic material did not proceed well and a large amount of scale in the form of agglomeration occurred, and the polymerization process was also not properly performed.
- 390 kg of deionized water was added to a reactor of 1 m3 of internal volume having a reflux condenser, 150 g of polyvinyl alcohol having a degree of hydration of 78%, 120 g of polyvinyl alcohol having a degree of hydration of 40%, and 30 g of hydroxypropylmethyl cellulose.
- 300 kg of vinyl chloride monomer was added, 30 g of di-2-ethylhexyl peroxydicarbonate and 120 g of t-butylperoxy neodecanoate were added, and then the polymerization temperature was set to an average degree of polymerization of 1000.
- the reaction was carried out while maintaining the temperature of 57 ° C. during the entire polymerization process.
- Example 5 the result of measuring the thermal stability was greatly improved by 20 ° C or more, as shown in FIG. 7.
- the transparency is 78.8, the tensile strength is 650Kg / cm2, the impact strength is 90 Kgf.cm/cm2, and the heat resistance is 76.2. It was confirmed that the improved physical properties compared to the vinyl chloride-based resin of Comparative Example 2 not included.
- Example 2 the thermal stability was improved compared to Comparative Example 2, and the melting time was much shortened to 105 sec compared to Comparative Example 165 sec.
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Abstract
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Claims (14)
- 친수성 나노무기물질; 및 불포화유기산계 중합체, 및 폴리카르복시산계 (공)중합체 중에서 선택된 1종 이상의 친수성 고분자;를 포함하는 것을 특징으로 하는염화비닐계 나노복합체 조성물.
- 제1항에 있어서, 상기 불포화유기산계 중합체, 및 폴리카르복시산계 (공)중합체 중에서 선택된 1종 이상의 친수성 고분자는 상기 친수성 나노무기물질 100 중량부를 기준으로, 0.1 내지 15 중량부인 것을 특징으로 하는염화비닐계 나노복합체 조성물.
- 제1항에 있어서, 상기 친수성 나노무기물질은 탄산칼슘, 실리카, 티타늄옥사이드, 클레이 및 카본블랙으로부터 선택된 1종 이상으로 평균 입경이 1 내지 300 nm인 것을 특징으로 하는염화비닐계 나노복합체 조성물.
- 제 1 항에 있어서, 상기 불포화유기산 중합체는 아크릴산 중합체, 메타크릴산 중합체, 이타콘산 중합체, 푸마르산 중합체, 말레인산 중합체, 숙신산 중합체, 올레산 중합체 및 젤라틴 중에서 1종 이상 선택된 것을 특징으로 하는염화비닐계 나노복합체 조성물.
- 제 1항에 있어서, 상기 폴리카르복시산계 (공)중합체는 카르복시산, 아크릴산, 메타크릴산, 메틸(메타)아크릴산, 에틸(메타)아크릴산, 트리메틸아크릴산, 말레산, 푸마르산, 이타콘산, 크로톤산, 시트라콘산, 비닐초산, 4-펜텐산 및 이들의 염 중에서 선택된 1종 이상을 포함하여 중합된 중합체인 것을 특징으로 하는염화비닐계 나노복합체 조성물.
- 친수성 나노무기물질; 불포화유기산계 중합체 및 폴리카르복시산계 (공)중합체 중에서 1종 이상 선택된 친수성 고분자; 및 물;을 교반하여 수분산 현탁액을 제조하는 단계:상기 수분산 현탁액에 보호 콜로이드 조제 및 염화비닐계 단량체를 투입하고 교반하여 혼합 용액을 제조하는 단계; 및상기 혼합 용액에 개시제를 투입하고 현탁 중합하는 단계;를 포함하는염화비닐계 나노복합체의 제조방법.
- 제7 항에 있어서, 상기 수분산 현탁액은 물 100 중량부에 대해 친수성 나노무기물질 1 내지 20 중량부, 및 불포화유기산계 중합체 및 폴리카르복시산계 (공)중합체 중에서 1종 이상 선택된 친수성 고분자 0.01 내지 1.5 중량부가 포함되는 것을 특징으로 하는염화비닐계 나노복합체의 제조방법.
- 제7 항에 있어서, 상기 혼합 용액은 염화비닐계 단량체 100 중량부 기준으로, 수분산 현탁액 100 내지 200 중량부, 및 보호 콜로이드 조제 0.001 내지 5 중량부를 포함하는 것을 특징으로 하는 염화비닐계 나노복합체의 제조방법.
- 제9항에 있어서, 상기 보호 콜로이드 조제는 수화도가 70 내지 98 %인 비닐알콜계 수지, 및 수화도가 35 내지 60 %인 비닐알콜계 수지 중에서 선택된 1 이상인 것을 특징으로 하는염화비닐계 나노복합체의 제조방법.
- 제7항에 있어서, 상기 개시제는 염화비닐계 단량체 100 중량부 기준으로, 0.0001 내지 0.5 중량부로 투입되는 것을 특징으로 하는염화비닐계 나노복합체의 제조방법.
- 제11 항에 있어서, 상기 개시제는 디아실퍼옥사이드류, 퍼옥시디카보네이트류, 퍼옥시 에스테르류, 아조 화합물 및 설페이트류 중에서 선택된 1종 이상인 것을 특징으로 하는염화비닐계 나노복합체의 제조방법.
- 제7항에 있어서, 상기 현탁 중합의 반응 압력이 6.0 내지 8.0 kg/cm2에 도달한 시점에 반응 종결제를 투입하고 슬러리를 유동층 건조기에서 건조시키는 단계;를 더 포함하는 것을 특징으로 하는염화비닐계 나노복합체의 제조방법.
- 제7항 내지 제13항 중 어느 한 항에 의한 제조방법에 의하여 제조된 것을 특징으로 하는스트레이트 염화비닐계 나노복합체.
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