CN110982165A - EVA environment-friendly color master batch - Google Patents
EVA environment-friendly color master batch Download PDFInfo
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- CN110982165A CN110982165A CN201911326678.8A CN201911326678A CN110982165A CN 110982165 A CN110982165 A CN 110982165A CN 201911326678 A CN201911326678 A CN 201911326678A CN 110982165 A CN110982165 A CN 110982165A
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- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
- C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
- C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
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- C08J2433/00—Characterised by the use 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; Derivatives of such polymers
- C08J2433/04—Characterised by the use 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; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use 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; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2433/12—Homopolymers or copolymers of methyl methacrylate
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- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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- C08J2497/00—Characterised by the use of lignin-containing materials
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- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
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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
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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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- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
Abstract
The invention discloses an EVA environment-friendly color master batch which is prepared from the following raw materials in parts by weight: 40-50 parts of pigment, 30-40 parts of pigment carrier, 18-24 parts of dispersant, 12-15 parts of talcum powder, 6-9 parts of flame retardant additive, 9-11 parts of modified bamboo fiber, 0.6-0.8 part of auxiliary agent and 0.3-0.5 part of light stabilizer; the EVA environment-friendly color master batch is prepared by the following steps: firstly, premixing; secondly, extruding by a screw extruder; and thirdly, cooling and granulating. The prepared EVA color master batch has good light resistance, weather resistance, heat resistance and mechanical property, is convenient and sanitary to use, is easy to disperse and add, has no toxicity and harm of raw materials, does not contain any halogen system and heavy metal components, and is an environment-friendly product; the color master batch has high compatibility with EVA, is not easy to generate the problems of layering, blooming, patterns and the like, and can increase the flame retardance while coloring.
Description
Technical Field
The invention belongs to the technical field of color master batches, and particularly relates to an EVA environment-friendly color master batch.
Background
The color master batch is a plastic colorant which is well dispersed by a high proportion of pigment or additive and thermoplastic resin, and the selected resin has good wetting and dispersing effects on the colorant and has good compatibility with the material to be colored. Color masterbatch tinting is the most commonly used plastic tinting process today. The colorant dispersed in the carrier is simply mixed with the natural color master batch color resin to be used for manufacturing plastic products.
With the continuous development of the plastic industry, the demand of plastics is also greatly increased. Because the plastics are not easy to decompose and recycle, the wastes thereof also become harmful garbage to pollute the environment. The development and use of degradable plastics is therefore the direction of development in the production of plastics.
The degradable plastic is plastic which is added with a certain amount of additives (such as starch, modified starch or other celluloses, photosensitizers, biodegradable agents and the like) in the production process, has reduced stability and is easier to degrade in natural environment. The EVA color master batch is a granular color master batch prepared by using EVA (ethylene-vinyl acetate copolymer) as a carrier, has the pigment content of 10-60 percent, and can be applied to EVA foaming, slippers, sports shoes, ground mats, leisure appliances, toys and the like. EVA is easy to biodegrade, and cannot cause damage to the environment when being discarded or combusted, but the EVA material has the defect of low mechanical strength, so that the mechanical property of the color master batch taking EVA as a carrier cannot meet the requirement.
Disclosure of Invention
The invention aims to provide an EVA environment-friendly color master batch, which has good light resistance, weather resistance, heat resistance and mechanical property, is convenient and sanitary to use, is easy to disperse and add, has no toxicity and harm of used raw materials, does not contain any halogen system and heavy metal components, and is an environment-friendly product by the functionalized modification of a flame retardant additive and modified bamboo fibers and the assistance of a processing aid with scientific proportion; the color master batch has high compatibility with EVA, is not easy to generate the problems of layering, blooming, patterns and the like, can increase the flame retardance while coloring, improves the added value of the EVA product and reduces the cost of raw materials.
The purpose of the invention can be realized by the following technical scheme:
the EVA environment-friendly color master batch is prepared from the following raw materials in parts by weight: 40-50 parts of pigment, 30-40 parts of pigment carrier, 18-24 parts of dispersant, 12-15 parts of talcum powder, 6-9 parts of flame retardant additive, 9-11 parts of modified bamboo fiber, 0.6-0.8 part of auxiliary agent and 0.3-0.5 part of light stabilizer;
the EVA environment-friendly color master batch is prepared by the following steps:
firstly, sequentially adding a pigment carrier, a pigment, a dispersing agent, talcum powder, a flame retardant additive and modified bamboo fiber into a low-speed stirrer, mixing at the normal temperature of 150r/min for 3-5min, transferring to a high-speed mixer, adding an auxiliary agent and a light stabilizer, and mixing at the high speed of 2000r/min for 8-10min by using the high-speed mixer;
secondly, plasticizing and extruding the mixture obtained in the step by using a screw extruder, wherein the temperature of 5 temperature zones in the extruder is respectively set to be 158-fold-by-one at 165 ℃, 160-fold-by-one at 170 ℃, 160-fold-by-one at 175 ℃, 170-fold-by-one at 190 ℃, 175-fold-by-one at 190 ℃, the rotation speed of a host machine is 800r/min, and the extrudate is cooled in water at 10-20 ℃;
and thirdly, granulating by using a granulator after cooling, sieving by using a vibrating screen to remove irregular products, ventilating, and completely cooling the color master batch to obtain the EVA environment-friendly color master batch.
Further, the pigment is one of rutile titanium dioxide, benzimidazolone yellow, anthraquinone orange, quinacridone red, phthalocyanine blue, phthalocyanine green and benzimidazolone brown.
Further, the pigment carrier comprises EVA, polylactic acid and rosin resin, wherein the EVA, polylactic acid and rosin resin are compounded according to the mass ratio of 10:2-3: 0.9-1.5.
Further, the dispersing agent is polypropylene wax, heavy calcium carbonate, stearic acid amide and ethanol, and the weight ratio of the polypropylene wax to the heavy calcium carbonate to the stearic acid amide to the ethanol is 3: 2: 2: 1, adding the mixture into a sand mill disperser, and grinding at 1500 rpm, wherein the average particle diameter of the grinding particles is controlled to be 0.3-0.6 μm.
Further, the auxiliary agent is a mixture of stearic acid amide and polymethyl methacrylate, and the mixing ratio is 1: 1.
further, the light stabilizer is one of o-hydroxybenzophenone, salicylate and s-triazine.
Further, the flame retardant additive is prepared by the following method:
(1) weighing 10g of isophorone diisocyanate, adding 50ml of hexane, stirring at normal temperature of 300r/min for 15-17min, and completely dissolving isophorone diisocyanate in hexane to prepare a hexane solution of isophorone diisocyanate for later use; weighing 4.8g of melamine powder, adding the melamine powder into 50ml of hexane, and carrying out normal-temperature ultrasonic treatment for 12-14min to obtain melamine hexane dispersion liquid for later use;
(2) 300mL of hexane was measured and put into a three-necked flask, and 109g of Al (OH) was added3Magnetic stirring is started, the stirring speed is 500r/min, meanwhile, the system is slowly heated to 58 ℃, and the magnetic stirring is carried out for 10min at constant temperature, so that Al (OH)3The powder was uniformly dispersed in hexane;
(3) slowly dripping the isophorone diisocyanate hexane solution into a three-neck flask by using a constant-pressure dropping funnel, controlling the dripping speed to be 15-18 drops/min, raising the stirring speed to 1100r/min after finishing dripping, and continuing to stir for 9min by magnetic force; slowly dripping the melamine-hexane dispersion liquid into the system by using a constant-pressure dropping funnel, and controlling the dripping speed to be 30-34 drops/min;
(4) after the dropwise addition of the melamine hexane dispersion liquid is finished, the temperature is kept at 58 ℃ under the water bath condition, the stirring reaction is carried out at 1100r/min for 4 hours, after the reaction is finished, the system is naturally cooled to the room temperature, the vacuum filtration is carried out to obtain solid products, hexane and deionized water are used for respectively washing the solid products twice, the washed and filtered solid products are placed in an electric heating air blowing drying oven for drying at 80 ℃ for 10-12 hours, and the solid products are taken out and ground to pass through a 500-mesh sieve, so that the flame retardant additive is obtained.
Further, the modified bamboo fiber is prepared by the following method:
(1) drying the bamboo fiber in a vacuum drying oven at 105 ℃ for 5-6 h;
(2) uniformly mixing ethanol and deionized water according to the mass ratio of 1:4 to obtain an ethanol solution, and weighing a silane coupling agent KH550 accounting for 3% of the mass of the ethanol and Na accounting for 0.8% of the mass of the ethanol2CO3Adding ethanol solution, stirring and mixing uniformly to prepare modified treatment solution;
(3) and (3) drying the bamboo fibers, wherein the material-liquid ratio is 4-5 g: adding 10mL of the modified bamboo fiber into the prepared modified treatment solution, raising the temperature of the system to 86 ℃, soaking at the constant temperature of 86 ℃ for 105-110min, taking out the soaked bamboo fiber, and drying to obtain the modified bamboo fiber.
The invention has the beneficial effects that:
the invention adds flame retardant additive into the raw materials to carry out functional modification on the color master batch, wherein the flame retardant additive is Al (OH)3The coating is formed by the reaction of isophorone diisocyanate and melamine, polyurea resin is coated on Al (OH)3The surface of the particles forms particles similar to the shape of a microcapsule; polyurea coating Al (OH)3Then, since the degradation temperature of the polyurea resin film of the outer layer is lower than that of Al (OH)3The degradation temperature of (2) can play a role in protecting Al (OH)3The function of the core material is not changed, and Al (OH) is not changed3So that the polyurea microcapsules are coated with Al (OH)3Not only improve Al (OH)3Can be stabilized with Al (OH)3When the flame-retardant coating is subjected to the action of heat or flame, the flame-retardant coating is quickly released to play a role in flame retardance; meanwhile, Al (OH)3The surface is coated with a layer of polyurea resin film, thereby greatly reducing Al (OH)3Increased polarity of Al (OH)3The compatibility in EVA matrix enables the flame retardant additive to be highly and uniformly dispersed in the EVA base material, and endows the color master batch with good flame retardanceEnergy is saved;
the raw materials of the invention adopt modified bamboo fibers, the EVA matrix is rich in ester groups, and (C ═ O) in the ester groups can easily generate hydrogen bonds or stronger polar electrostatic coupling effect with hydroxyl (-OH) or polar groups on the surface of the bamboo fibers, so that the bamboo fibers can not be uniformly distributed in the EVA matrix; the surface hydroxyl of the bamboo fiber treated by the silane coupling agent is reduced, the polarity is reduced, the compatibility with an EVA matrix is enhanced, and the interface adhesion with the matrix is favorably realized, so that the mechanical property of the color master batch is improved;
the pigment carrier comprises EVA, polylactic acid and rosin resin which are biodegradable environment-friendly high polymer materials, and the prepared EVA color master batch has good light resistance, weather resistance, heat resistance and mechanical property, is convenient and sanitary to use and easy to disperse and add by the functional modification of a flame retardant additive and modified bamboo fibers and the assistance of a processing aid with scientific proportion, and the used raw materials are nontoxic and harmless, do not contain any halogen system and heavy metal components, and are environment-friendly products; the color master batch has high compatibility with EVA, is not easy to generate the problems of layering, blooming, patterns and the like, can increase the flame retardance while coloring, improves the added value of the EVA product and reduces the cost of raw materials.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The EVA environment-friendly color master batch is prepared from the following raw materials in parts by weight: 40-50 parts of pigment, 30-40 parts of pigment carrier, 18-24 parts of dispersant, 12-15 parts of talcum powder, 6-9 parts of flame retardant additive, 9-11 parts of modified bamboo fiber, 0.6-0.8 part of auxiliary agent and 0.3-0.5 part of light stabilizer;
the pigment is one of rutile titanium dioxide, benzimidazolone yellow, anthraquinone orange, quinacridone red, phthalocyanine blue, phthalocyanine green and benzimidazolone brown;
the pigment carrier comprises EVA, polylactic acid and rosin resin, and the EVA, the polylactic acid and the rosin resin are compounded according to the mass ratio of 10:2-3: 0.9-1.5;
the dispersant is polypropylene wax, heavy calcium carbonate, stearic acid amide and ethanol, and the weight ratio of the dispersant to the raw materials is 3: 2: 2: 1, adding the mixture into a sanding disperser, and grinding at the rotating speed of 1500 revolutions per minute, wherein the average grain diameter of the grinding particles is controlled to be 0.3-0.6 mu m;
the auxiliary agent is a mixture of stearic acid amide and polymethyl methacrylate, and the mixing ratio is 1: 1;
the light stabilizer is one of o-hydroxybenzophenone, salicylate and s-triazine;
the flame retardant additive is prepared by the following method:
(1) weighing 10g of isophorone diisocyanate, adding 50ml of hexane, stirring at normal temperature of 300r/min for 15-17min, and completely dissolving isophorone diisocyanate in hexane to prepare a hexane solution of isophorone diisocyanate for later use; weighing 4.8g of melamine powder, adding the melamine powder into 50ml of hexane, and carrying out normal-temperature ultrasonic treatment for 12-14min to obtain melamine hexane dispersion liquid for later use;
(2) 300mL of hexane was measured and put into a three-necked flask, and 109g of Al (OH) was added3Magnetic stirring is started, the stirring speed is 500r/min, meanwhile, the system is slowly heated to 58 ℃, and the magnetic stirring is carried out for 10min at constant temperature, so that Al (OH)3The powder was uniformly dispersed in hexane;
(3) slowly dripping the isophorone diisocyanate hexane solution into a three-neck flask by using a constant-pressure dropping funnel, controlling the dripping speed to be 15-18 drops/min, raising the stirring speed to 1100r/min after finishing dripping, and continuing to stir for 9min by magnetic force; slowly dripping the melamine-hexane dispersion liquid into the system by using a constant-pressure dropping funnel, and controlling the dripping speed to be 30-34 drops/min in order to ensure that the melamine is dispersed more uniformly and achieve the purpose of controlling the reaction rate;
(4) after the dropwise addition of the melamine hexane dispersion liquid is finished, keeping the temperature at 58 ℃ under the water bath condition, stirring and reacting at 1100r/min for 4 hours, after the reaction is finished, naturally cooling the system to room temperature, carrying out vacuum filtration to obtain solid products, respectively washing the solid products twice by using hexane and deionized water, placing the washed and filtered solid products in an electrothermal blowing drying oven for drying at 80 ℃ for 10-12 hours, taking out, grinding and sieving with a 500-mesh sieve to obtain the flame retardant additive;
the prepared flame retardant additive is Al (OH)3The coating is formed by the reaction of isophorone diisocyanate and melamine, polyurea resin is coated on Al (OH)3The surface of the particles forms particles similar to the shape of a microcapsule; polyurea coating Al (OH)3Then, since the degradation temperature of the polyurea resin film of the outer layer is lower than that of Al (OH)3The degradation temperature of (2) can play a role in protecting Al (OH)3The function of the core material is not changed, and Al (OH) is not changed3So that the polyurea microcapsules are coated with Al (OH)3Not only improve Al (OH)3Can be stabilized with Al (OH)3When the flame-retardant coating is subjected to the action of heat or flame, the flame-retardant coating is quickly released to play a role in flame retardance; meanwhile, Al (OH)3The surface is coated with a layer of polyurea resin film, thereby greatly reducing Al (OH)3Increased polarity of Al (OH)3The compatibility in the EVA matrix enables the flame retardant additive to be highly and uniformly dispersed in the EVA base material, thereby achieving excellent flame retardant property;
the modified bamboo fiber is prepared by the following method:
(1) drying the bamboo fiber in a vacuum drying oven at 105 ℃ for 5-6 h;
(2) uniformly mixing ethanol and deionized water according to the mass ratio of 1:4 to obtain an ethanol solution, and weighing a silane coupling agent KH550 accounting for 3% of the mass of the ethanol and Na accounting for 0.8% of the mass of the ethanol2CO3Adding ethanol solution, stirring and mixing uniformly to prepare modified treatment solution;
(3) and (3) drying the bamboo fibers, wherein the material-liquid ratio is 4-5 g: adding 10mL of the modified bamboo fiber into the prepared modified treatment solution, raising the temperature of the system to 86 ℃, soaking at the constant temperature of 86 ℃ for 105-110min, taking out the soaked bamboo fiber, and drying to obtain the modified bamboo fiber;
the EVA matrix is rich in ester groups, and (C ═ O) in the ester groups can easily generate hydrogen bonds or stronger polar electrostatic coupling effect with hydroxyl (-OH) or polar groups on the surface of the bamboo fibers, so that the bamboo fibers cannot be uniformly distributed in the EVA matrix; the surface hydroxyl of the bamboo fiber treated by the silane coupling agent is reduced, the polarity is reduced, the compatibility with an EVA matrix is enhanced, and the interface adhesion with the matrix is favorably realized, so that the mechanical property of the color master batch is improved;
the EVA environment-friendly color master batch is prepared by the following steps:
firstly, sequentially adding a pigment carrier, a pigment, a dispersing agent, talcum powder, a flame retardant additive and modified bamboo fiber into a low-speed stirrer, mixing at the normal temperature of 150r/min for 3-5min, transferring to a high-speed mixer, adding an auxiliary agent and a light stabilizer, and mixing at the high speed of 2000r/min for 8-10min by using the high-speed mixer;
secondly, plasticizing and extruding the mixture obtained in the step by using a screw extruder, wherein the temperature of 5 temperature zones in the extruder is respectively set to be 158-fold-by-one at 165 ℃, 160-fold-by-one at 170 ℃, 160-fold-by-one at 175 ℃, 170-fold-by-one at 190 ℃, 175-fold-by-one at 190 ℃, the rotation speed of a host machine is 800r/min, and the extrudate is cooled in water at 10-20 ℃;
and thirdly, granulating by using a granulator after cooling, sieving by using a vibrating screen to remove irregular products, ventilating, and completely cooling the color master batch to obtain the EVA environment-friendly color master batch.
Example 1
The EVA environment-friendly color master batch is prepared from the following raw materials in parts by weight: 40 parts of rutile titanium dioxide, 30 parts of pigment carrier, 18 parts of dispersant, 12 parts of talcum powder, 6 parts of flame retardant additive, 9 parts of modified bamboo fiber, 0.6 part of auxiliary agent and 0.3 part of o-hydroxy benzophenone;
the pigment carrier comprises EVA, polylactic acid and rosin resin, and the EVA, the polylactic acid and the rosin resin are compounded according to the mass ratio of 10:2: 0.9;
the EVA environment-friendly color master batch is prepared by the following steps:
firstly, sequentially adding a pigment carrier, rutile titanium dioxide, a dispersing agent, talcum powder, a flame retardant additive and modified bamboo fiber into a low-speed stirrer, mixing at the normal temperature of 150r/min for 3min, transferring to a high-speed mixer, adding an auxiliary agent and o-hydroxybenzophenone, and mixing at the high speed of 2000r/min for 8min by using the high-speed mixer;
secondly, plasticizing and extruding the mixture obtained in the step by using a screw extruder, setting the temperature of 5 temperature zones in the extruder to be 158 ℃, 160 ℃, 170 ℃ and 175 ℃, setting the rotating speed of a main engine to be 500r/min, and cooling the extrudate in water at 10 ℃;
and thirdly, granulating by using a granulator after cooling, sieving by using a vibrating screen to remove irregular products, ventilating, and completely cooling the color master batch to obtain the EVA environment-friendly color master batch.
Example 2
The EVA environment-friendly color master batch is prepared from the following raw materials in parts by weight: 45 parts of benzimidazolone yellow, 35 parts of pigment carrier, 21 parts of dispersant, 13.5 parts of talcum powder, 7.5 parts of flame retardant additive, 10.5 parts of modified bamboo fiber, 0.7 part of auxiliary agent and 0.4 part of salicylate;
the pigment carrier comprises EVA, polylactic acid and rosin resin, and the EVA, the polylactic acid and the rosin resin are compounded according to the mass ratio of 10:2.5: 1.2;
the EVA environment-friendly color master batch is prepared by the following steps:
firstly, sequentially adding a pigment carrier, benzimidazolone yellow, a dispersing agent, talcum powder, a flame retardant additive and modified bamboo fiber into a low-speed stirrer, mixing at the normal temperature of 150r/min for 4min, transferring to a high-speed mixer, adding an auxiliary agent and salicylate, and then mixing at the high speed of 2000r/min for 9min by using the high-speed mixer;
secondly, plasticizing and extruding the mixture obtained in the step by using a screw extruder, setting the temperature of 5 temperature zones in the extruder to be 162 ℃, 165 ℃, 168 ℃, 180 ℃ and 182 ℃, setting the rotating speed of a main machine to be 750r/min, and cooling the extrudate in 15 ℃ water;
and thirdly, granulating by using a granulator after cooling, sieving by using a vibrating screen to remove irregular products, ventilating, and completely cooling the color master batch to obtain the EVA environment-friendly color master batch.
Example 3
The EVA environment-friendly color master batch is prepared from the following raw materials in parts by weight: 50 parts of anthraquinone orange, 40 parts of pigment carrier, 24 parts of dispersing agent, 15 parts of talcum powder, 9 parts of flame retardant additive, 11 parts of modified bamboo fiber, 0.8 part of auxiliary agent and 0.3 part of s-triazine;
the pigment carrier comprises EVA, polylactic acid and rosin resin, and the EVA, the polylactic acid and the rosin resin are compounded according to the mass ratio of 10:3: 1.5;
the EVA environment-friendly color master batch is prepared by the following steps:
firstly, sequentially adding a pigment carrier, anthraquinone orange, a dispersing agent, talcum powder, a flame retardant additive and modified bamboo fiber into a low-speed stirrer, mixing at the normal temperature of 150r/min for 5min, transferring to a high-speed mixer, adding an auxiliary agent and s-triazine, and mixing at the high speed of 2000r/min for 10min by using the high-speed mixer;
secondly, plasticizing and extruding the mixture obtained in the step by using a screw extruder, setting the temperature of 5 temperature zones in the extruder to be 165 ℃, 170 ℃, 175 ℃, 190 ℃ and 190 ℃, and setting the rotating speed of a main machine to be 800r/min, and cooling the extrudate in water at 20 ℃;
and thirdly, granulating by using a granulator after cooling, sieving by using a vibrating screen to remove irregular products, ventilating, and completely cooling the color master batch to obtain the EVA environment-friendly color master batch.
The color concentrates prepared in examples 1-3 were tested for the following properties:
firstly, uniformly mixing dried EVA and the color master batch prepared in the embodiment 1-3 according to the mass ratio of 18:1, adding the mixture into a double-screw extruder for extrusion granulation, then using an injection molding machine to injection mold a standard test sample strip, and carrying out the following performance tests:
(1) oxygen index: testing according to the standard GB/T2406-1993; horizontal and vertical combustion performance: testing according to GB/T2408-2008, and the test results are shown in the following table;
| example 1 | Example 2 | Example 3 | Pure EVA | |
| Oxygen index/% | 33.5 | 33.9 | 33.6 | |
| Flame retardant rating | V-0 | V-0 | V-0 |
In the aspect of oxygen index, the color master batch prepared by the invention is added, the oxygen index is higher than 33.5%, in the aspect of horizontal and vertical combustion performance, the flame retardant grade reaches V-0 grade, and the flame retardant requirement of the product can be met;
(2) bending strength: according to GB/T9341-2008; tensile property: according to GB/T1040-2006, the test results are as follows:
| example 1 | Example 2 | Example 3 | Pure EVA | |
| Flexural Strength/MPa | 66.8 | 67.2 | 66.9 | |
| Tensile strength/MPa | 43.6 | 44.5 | 44.2 | |
| Elongation at break/% | 5.2 | 5.3 | 5.2 |
The addition of the color master batch prepared by the invention can show that the material has the bending strength higher than 66.8MPa, the tensile strength higher than 43.6MPa and the elongation at break higher than 5.2 percent, which are all higher than pure EVA, and the color master batch has high mechanical property;
(3) the color concentrates prepared in examples 1-3 were tested for buried soil degradation, and the degradation rates after 180 days were as follows:
it can be seen that the degradation rate of the color master batch 180d prepared in examples 1-3 is higher than 89.7%, which indicates that the color master batch prepared by the invention is biodegradable, does not cause environmental pollution, and is green and environment-friendly.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The EVA environment-friendly color master batch is characterized by being prepared from the following raw materials in parts by weight: 40-50 parts of pigment, 30-40 parts of pigment carrier, 18-24 parts of dispersant, 12-15 parts of talcum powder, 6-9 parts of flame retardant additive, 9-11 parts of modified bamboo fiber, 0.6-0.8 part of auxiliary agent and 0.3-0.5 part of light stabilizer;
the EVA environment-friendly color master batch is prepared by the following steps:
firstly, sequentially adding a pigment carrier, a pigment, a dispersing agent, talcum powder, a flame retardant additive and modified bamboo fiber into a low-speed stirrer, mixing at the normal temperature of 150r/min for 3-5min, transferring to a high-speed mixer, adding an auxiliary agent and a light stabilizer, and mixing at the high speed of 2000r/min for 8-10min by using the high-speed mixer;
secondly, plasticizing and extruding the mixture obtained in the step by using a screw extruder, wherein the temperature of 5 temperature zones in the extruder is respectively set to be 158-fold-by-one at 165 ℃, 160-fold-by-one at 170 ℃, 160-fold-by-one at 175 ℃, 170-fold-by-one at 190 ℃, 175-fold-by-one at 190 ℃, the rotation speed of a host machine is 800r/min, and the extrudate is cooled in water at 10-20 ℃;
and thirdly, granulating by using a granulator after cooling, sieving by using a vibrating screen to remove irregular products, ventilating, and completely cooling the color master batch to obtain the EVA environment-friendly color master batch.
2. The EVA environment-friendly color master batch according to claim 1, wherein the pigment is one of rutile type titanium dioxide, benzimidazolone yellow, anthraquinone orange, quinacridone red, phthalocyanine blue, phthalocyanine green and benzimidazole brown.
3. The EVA environment-friendly color master batch according to claim 1, wherein the pigment carrier comprises EVA, polylactic acid and rosin resin, and the EVA, polylactic acid and rosin resin are compounded according to a mass ratio of 10:2-3: 0.9-1.5.
4. The EVA environment-friendly color master batch according to claim 1, wherein the dispersant is polypropylene wax, ground calcium carbonate, stearic acid amide and ethanol, and the weight ratio of the dispersant to the weight ratio of: 2: 2: 1, adding the mixture into a sand mill disperser, and grinding at 1500 rpm, wherein the average particle diameter of the grinding particles is controlled to be 0.3-0.6 μm.
5. The EVA environment-friendly color master batch according to claim 1, wherein the auxiliary agent is a mixture of stearic acid amide and polymethyl methacrylate, and the mixing ratio is 1: 1.
6. the EVA environment-friendly color master batch according to claim 1, wherein the light stabilizer is one of o-hydroxybenzophenone, salicylate and s-triazine.
7. The EVA environment-friendly color master batch according to claim 1, wherein the flame retardant additive is prepared by the following method:
(1) weighing 10g of isophorone diisocyanate, adding 50ml of hexane, stirring at normal temperature of 300r/min for 15-17min, and completely dissolving isophorone diisocyanate in hexane to prepare a hexane solution of isophorone diisocyanate for later use; weighing 4.8g of melamine powder, adding the melamine powder into 50ml of hexane, and carrying out normal-temperature ultrasonic treatment for 12-14min to obtain melamine hexane dispersion liquid for later use;
(2) 300mL of hexane was measured and put into a three-necked flask, and 109g of Al (OH) was added3Magnetic stirring is started, the stirring speed is 500r/min, meanwhile, the system is slowly heated to 58 ℃, and the magnetic stirring is carried out for 10min at constant temperature, so that Al (OH)3The powder was uniformly dispersed in hexane;
(3) slowly dripping the isophorone diisocyanate hexane solution into a three-neck flask by using a constant-pressure dropping funnel, controlling the dripping speed to be 15-18 drops/min, raising the stirring speed to 1100r/min after finishing dripping, and continuing to stir for 9min by magnetic force; slowly dripping the melamine-hexane dispersion liquid into the system by using a constant-pressure dropping funnel, and controlling the dripping speed to be 30-34 drops/min;
(4) after the dropwise addition of the melamine hexane dispersion liquid is finished, the temperature is kept at 58 ℃ under the water bath condition, the stirring reaction is carried out at 1100r/min for 4 hours, after the reaction is finished, the system is naturally cooled to the room temperature, the vacuum filtration is carried out to obtain solid products, hexane and deionized water are used for respectively washing the solid products twice, the washed and filtered solid products are placed in an electric heating air blowing drying oven for drying at 80 ℃ for 10-12 hours, and the solid products are taken out and ground to pass through a 500-mesh sieve, so that the flame retardant additive is obtained.
8. The EVA environment-friendly color master batch according to claim 1, wherein the modified bamboo fiber is prepared by the following method:
(1) drying the bamboo fiber in a vacuum drying oven at 105 ℃ for 5-6 h;
(2) uniformly mixing ethanol and deionized water according to the mass ratio of 1:4 to obtain an ethanol solution, and weighing a silane coupling agent KH550 accounting for 3% of the mass of the ethanol and Na accounting for 0.8% of the mass of the ethanol2CO3Adding ethanol solution, stirring and mixing uniformly to prepare modified treatment solution;
(3) and (3) drying the bamboo fibers, wherein the material-liquid ratio is 4-5 g: adding 10mL of the modified bamboo fiber into the prepared modified treatment solution, raising the temperature of the system to 86 ℃, soaking at the constant temperature of 86 ℃ for 105-110min, taking out the soaked bamboo fiber, and drying to obtain the modified bamboo fiber.
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| CN201911326678.8A CN110982165A (en) | 2019-12-20 | 2019-12-20 | EVA environment-friendly color master batch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111320805A (en) * | 2020-04-16 | 2020-06-23 | 安徽缤飞塑胶科技有限公司 | Flame-retardant EVA color master batch and manufacturing process thereof |
| CN113321870A (en) * | 2021-06-15 | 2021-08-31 | 广东联塑科技实业有限公司 | Green color master batch for PPR pipe fittings and preparation method and application thereof |
-
2019
- 2019-12-20 CN CN201911326678.8A patent/CN110982165A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111320805A (en) * | 2020-04-16 | 2020-06-23 | 安徽缤飞塑胶科技有限公司 | Flame-retardant EVA color master batch and manufacturing process thereof |
| CN113321870A (en) * | 2021-06-15 | 2021-08-31 | 广东联塑科技实业有限公司 | Green color master batch for PPR pipe fittings and preparation method and application thereof |
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Application publication date: 20200410 |