CN108587075B - Modified polyester material and preparation method thereof - Google Patents
Modified polyester material and preparation method thereof Download PDFInfo
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- CN108587075B CN108587075B CN201810259979.2A CN201810259979A CN108587075B CN 108587075 B CN108587075 B CN 108587075B CN 201810259979 A CN201810259979 A CN 201810259979A CN 108587075 B CN108587075 B CN 108587075B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/32—Phosphorus-containing compounds
- C08K2003/321—Phosphates
- C08K2003/328—Phosphates of heavy metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/017—Additives being an antistatic agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention provides a modified polyester material and a preparation method thereof. The modified polyester material comprises the following raw materials in parts by weight: 60-80 parts of copolyester and 5-15 parts of gas-phase SiO22-5 parts of calcium carbonate, 0-2 parts of an antibacterial agent, 5-15 parts of an antistatic agent, 0-1 part of a heat stabilizer, 5-10 parts of an impact modifier, 0-1 part of an antioxidant and 0-3 parts of a pigment. The modified polyester material has good oleophobic and hydrophilic performance, anti-slip performance, toughness and hydrolytic stability, and has special functions of antibiosis, antistatic and excellent water contact angle. The preparation method is simple, and the prepared modified polyester material can be used forThe tableware is prepared, no cleaning agent is needed to be added when the tableware is cleaned, the tableware can be cleaned by using hot water at the temperature of 80-90 ℃ for 1-3 min, no water drops are accumulated on the surface of the tableware, and the tableware is particularly suitable for application in the field of food.
Description
Technical Field
The invention belongs to the technical field of polyester materials, and relates to a modified polyester material and a preparation method thereof.
Background
With the acceleration of life rhythm and the improvement of consumption level of people, fast diet is closely related to the life of people. Therefore, the problem of washing tableware used for eating and tableware after eating is not negligible. Common tableware includes bowls, dishes, lunch boxes, etc., and is mostly made of ceramics, and also made of plastics. The ceramic tableware needs to be fired at high temperature, consumes a large amount of energy, is not environment-friendly, and belongs to the three high industries of high energy consumption, high pollution and high emission. At present, plastic tableware on the market is called as the tableware market by the advantages of light weight, low price, good mechanical property and the like. However, in the actual use process, a lot of defects and inconvenience exist, for example, the high strength and the high toughness cannot be achieved, and common PP plastic tableware is soft in texture and is difficult to use normally due to distortion and deformation when stressed very little; the PP plastic has large low-temperature brittleness; the common PS plastic has hard texture but poor toughness, can be broken after being stressed, and has serious problems of people injury caused by chips splashing during breaking and the like. In addition, the plastic tableware has poor self-cleaning performance because the material is lipophilic, and in addition, the plastic is added with additives such as plasticizer and the like in the thermoplastic forming process, which can cause great harm to human bodies in the application of the tableware.
At present, tableware made of plastic materials is more and more, has the advantages of good falling resistance and difficult deformation, and is widely applied to tableware of restaurants and airplanes.
CN105860462 discloses a polylactic acid-based composite material, which is characterized by comprising the following components in parts by mass: 65 to 90 parts of polylactic acid, 5 to 20 parts of aliphatic-aromatic copolyester, 3 to 8 parts of compatilizer and 10 to 20 parts of modified inorganic filler; the weight average molecular weight of the polylactic acid is 10-18 ten thousand, and the molecular weight distribution index is 1.2-2; the modified inorganic filler is obtained by performing surface active treatment on the inorganic filler by using a coupling agent; the polylactic acid-based composite material prepared by the invention has good mechanical strength, but tableware made of the material has the problem of inconvenience in cleaning.
CN104355567A discloses a preparation method of a high-strength ceramic-like material and a method for manufacturing tableware, which is characterized in that the high-strength ceramic-like material is prepared by the following materials in proportion: (1) 220-240 parts of unsaturated polyester resin (2), 10-50 parts of low-shrinkage resin (3), 5-7.5 parts of curing agent (3), 450-500 parts of stone powder (4), 175-205 parts of glass fiber (5), and 10-20 parts of zinc stearate (6), wherein the preparation method comprises the following steps: firstly, adding unsaturated polyester resin, low-shrinkage resin, a curing agent, zinc stearate and 30% of stone powder into a high-shear type stirrer, uniformly stirring, and slowly adding the rest stone powder, uniformly mixing and stirring to prepare resin premixed slurry, wherein the mixing temperature reaches 50 +/-5 ℃; adding the resin premixed slurry into a mixer, adding the dried chopped glass fibers, stirring for 10-15 minutes, pouring out a dough, extruding the dough into strips and pills by using an extruder, and drying for later use, wherein the dough is called as a molding compound; the tableware making process includes the following steps: feeding materials; adding the solid molding compound into a preheated steel mold; combining an upper die and a lower die of a die into a whole and filling the die; the molding compound flows under pressure and fills the whole cavity to be solidified; fully curing after keeping for a certain time under the set pressure and temperature, opening the mold; taking out the tableware product.
However, the oil stain on the surface of the tableware is not easy to clean due to lipophilicity of the tableware made of the existing plastic material, and a large amount of tableware cleaning agents are generally used for removing the oil stain on the surface of the tableware more conveniently and quickly, so that a large amount of cleaning agents are remained on the surface of the tableware, the influence on the health of people can be caused due to long-term accumulation, and in addition, the cleaning agents contain a large amount of chemical synthetic products, so that the cleaning agent wastewater after the tableware is cleaned can cause great harm to the environment.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a modified polyester material which has good oleophobic and hydrophilic properties, anti-slip properties, toughness and hydrolytic stability, and has antibacterial and antistatic functions.
In order to achieve the purpose, the invention adopts the following technical scheme:
the modified polyester material comprises the following raw materials in parts by weight:
the modified polyester material comprises the following raw materials in parts by weight: 60-80 parts of copolyester, for example, the parts by weight of the copolyester are 60 parts, 61 parts, 62 parts, 63 parts, 64 parts, 65 parts, 66 parts, 67 parts, 68 parts, 69 parts, 70 parts, 71 parts, 72 parts, 73 parts, 74 parts, 75 parts, 76 parts, 77 parts, 78 parts, 79 parts and 80 parts.
5-15 parts of gas phase SiO2E.g. gas phase SiO2The weight portions of the components are 5 portions, 6 portions, 7 portions, 8 portions, 9 portions, 10 portions, 11 portions, 12 portions, 13 portions, 14 portions and 15 portions.
2-5 parts of calcium carbonate, for example, 2 parts, 3 parts, 4 parts and 5 parts of calcium carbonate.
0 to 2 parts of an antibacterial agent, for example, 0, 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.1 part, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2 parts by weight of the antibacterial agent;
5-15 parts of antistatic agent, for example, the parts by weight of the antistatic agent are 5 parts, 6 parts, 7 parts, 8 parts, 9 parts, 10 parts, 11 parts, 12 parts, 13 parts, 14 parts and 15 parts.
0 to 1 part of a heat stabilizer, for example, 0, 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part by weight of the heat stabilizer.
5-10 parts of impact modifier, for example, 5 parts, 6 parts, 7 parts, 8 parts, 9 parts and 10 parts of impact modifier.
0 to 1 part of antioxidant, for example, the antioxidant is 0, 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part or 1 part by weight.
0 to 3 parts of a pigment, for example, 0, 0.1 part, 0.2 part, 0.3 part, 0.4 part, 0.5 part, 0.6 part, 0.7 part, 0.8 part, 0.9 part, 1 part, 1.1 part, 1.2 parts, 1.3 parts, 1.4 parts, 1.5 parts, 1.6 parts, 1.7 parts, 1.8 parts, 1.9 parts, 2 parts, 2.1 parts, 2.3 parts, 2.4 parts, 2.5 parts, 2.6 parts, 2.7 parts, 2.8 parts, 2.9 parts, 3 parts by weight of the pigment.
Preferably, the modified polyester material comprises the following raw materials in parts by weight: 65-75 parts of copolyester and 8-10 parts of gas-phase SiO23-5 parts of calcium carbonate, 0-1 part of an antibacterial agent, 6-10 parts of an antistatic agent, 0-0.5 part of a heat stabilizer, 6-8 parts of an impact modifier, 0-0.5 part of an antioxidant and 0-2 parts of a pigment.
The copolyester of the present invention is PCTG. PCTG material, a transparent plastic, is an amorphous copolyester, and the common comonomer used in PCTG is 1, 4-Cyclohexanedimethanol (CHDM), which is totally known as polyethylene terephthalate-1, 4-cyclohexanedimethanol ester. The product is a product obtained by polycondensing terephthalic acid (TPA), Ethylene Glycol (EG) and 1, 4-Cyclohexanedimethanol (CHDM) through an ester exchange method, 1, 4-cyclohexanedimethanol comonomer is added compared with PET, and ethylene glycol comonomer is added compared with PCT, so that the performance of PCTG is greatly different from that of PET and PCT. PCTG is a non-crystalline copolyester, and with the increase of CHDM in the copolymer, the melting point is reduced, the glass transition temperature is increased, the crystallinity is reduced, and finally an amorphous polymer is formed; the product has good viscosity, transparency, color, chemical agent resistance and stress whitening resistance, and can be rapidly thermoformed or extrusion blow molded; the viscosity is better than that of acrylic acid (acrylic). The PCTG is amorphous copolyester, the product is highly transparent and excellent in impact resistance, is particularly suitable for forming thick-wall transparent products, has excellent processing and forming performances, can be designed into any shape according to the intention of designers, can adopt traditional forming methods such as extrusion, injection molding, blow molding, plastic suction and the like, can be widely applied to markets such as sheet materials, high-performance shrink films, bottles, profiles, cosmetic packages and the like, and has excellent secondary processing performance.
Fumed silica (fumed SiO)2) Is one of the extremely important high-tech superfine inorganic new materials, has porosity, no toxicity, no smell, no pollution and high temperature resistance; simultaneously, it has chemical inertia and special thixotropyCan obviously improve the tensile strength, the tear resistance and the wear resistance of the product. The particle size of the gas-phase SiO2 is 20-30 nm, for example, the particle size of the gas-phase SiO2 is 20nm, 21nm, 22nm, 23nm, 24nm, 25nm, 26nm, 27nm, 28nm, 29nm and 30 nm. In the invention, the antibacterial agent is a silver ion antibacterial agent; preferably, the silver ion antibacterial agent is one or a mixture of at least two of silver ion zeolite, silver ion activated carbon, silver ion phosphate, silver ion silicate, silver ion titanate and silver ion ceramic.
The antistatic agent is ethoxylated aliphatic alkylamine; preferably, the antistatic agent is one or a mixture of at least two of ethoxylated amine laurate, dilauryl phosphate and glycerol monostearate. Typical but non-limiting combinations of such mixtures are mixtures of ethoxylated amine laurate, dilauryl phosphate, mixtures of ethoxylated amine laurate, glycerol monostearate, mixtures of dilauryl phosphate and glycerol monostearate, and mixtures of ethoxylated amine laurate, dilauryl phosphate and glycerol monostearate.
The heat stabilizer is one or a mixture of at least two of bio-epoxidized soybean oil, vitamin C and vitamin E. Typical but non-limiting combinations of such mixtures are mixtures of bio-based epoxidized soybean oil, vitamin C, mixtures of bio-based epoxidized soybean oil, vitamin E, mixtures of vitamin C, vitamin E, mixtures of bio-based epoxidized soybean oil, vitamin C and vitamin E.
The impact modifier is one or a mixture of at least two of acrylonitrile-butadiene-styrene copolymer, methyl methacrylate-butadiene-styrene copolymer, chlorinated polyethylene, ethylene-vinyl acetate copolymer, styrene-butadiene-styrene copolymer, synthetic rubber and thermoplastic elastomer.
The antioxidant is one or a mixture of at least two of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid octadecanol ester, 2' -methylene bis (4-methyl-6-tert-butylphenol) and tris (2, 4-di-tert-butylphenyl) phosphite. Typical but non-limiting combinations of such mixtures are octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, a mixture of 2,2 ' -methylenebis (4-methyl-6-tert-butylphenol), octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, a mixture of tris (2, 4-di-tert-butylphenyl) phosphite, a mixture of 2,2 ' -methylenebis (4-methyl-6-tert-butylphenol) and tris (2, 4-di-tert-butylphenyl) phosphite, octadecyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, 2,2 ' -methylenebis (4-methyl-6-tert-butylphenol), and tris (2, 4-di-tert-butylphenyl) phosphite.
The invention also aims to provide a preparation method of the modified polyester material, which comprises the following steps: respectively weighing 60-80 parts by weight of copolyester and 5-15 parts by weight of gas-phase SiO22-5 parts of calcium carbonate, 0-2 parts of an antibacterial agent, 5-15 parts of an antistatic agent, 0-1 part of a heat stabilizer, 5-10 parts of an impact modifier, 0-1 part of an antioxidant and 0-3 parts of a pigment, drying, then placing in a mixer for stirring and mixing, adding the mixed material into a double-screw extruder for melt extrusion, and cooling and granulating the extruded filaments to obtain the modified polyester material.
The drying temperature is 90-100 ℃, for example, the drying temperature is 90 ℃, 91 ℃, 92 ℃, 93 ℃, 94 ℃, 95 ℃, 96 ℃, 97 ℃, 98 ℃, 99 ℃ and 100 ℃; the drying time is 3-4 h, for example, the drying time is 3h, 3.1h, 3.2h, 3.3h, 3.4h, 3.5h, 3.6h, 3.7h, 3.8h, 3.9h and 4 h.
Preferably, the extrusion temperature of the twin-screw extruder from the feeding port to the extrusion die head is respectively as follows: the temperature of the first section is 240-280 ℃, the temperature of the second section is 240-280 ℃, the temperature of the third section is 240-280 ℃, the temperature of the nozzle is 240-280 ℃, the temperature of the die is 40-65 ℃, and the rotating speed of the screw is 40-70 r/min, such as 40r/min, 45r/min, 50r/min, 55r/min, 60r/min, 65r/min and 70 r/min.
Preferably, as the preparation method of the modified polyester material of the present invention, the following steps are included: respectively weighing 60-80 parts by weight of copolyester and 5-15 parts by weight of gas-phase SiO22-5 parts of calcium carbonate, 0-2 parts of antibacterial agent and 5-15 parts of antibacterial agentThe antistatic agent, the heat stabilizer, the impact modifier, the antioxidant and the pigment are dried and then placed in a mixer to be stirred and mixed, the mixed materials are added into a double-screw extruder to be melted and extruded, wherein the drying temperature is 90-100 ℃, the drying time is 3-4 hours, and the extrusion temperature of the double-screw extruder from a feeding port to an extrusion die head is respectively as follows: the temperature of the first section is 240-280 ℃, the temperature of the second section is 240-280 ℃, the temperature of the third section is 240-280 ℃, the temperature of the nozzle is 240-280 ℃, the temperature of the die is 40-65 ℃, and the rotating speed of the screw is 40-70 r/min; and cooling and granulating the extruded filaments to obtain the modified polyester material.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the modified polyester material, the gas-phase SiO2 is used for improving the surface tension of the polyester material, and the addition of calcium carbonate ensures that the hardness of the polyester material is reliable and the anti-skid property is improved; by regulating copolyester and gas-phase SiO2And the proportion of calcium carbonate improves the oleophobic and hydrophilic properties of the modified polyester material.
(2) The modified polyester material prepared by the invention has good toughness and hydrolytic stability, special functions of antibiosis, heat resistance and excellent water contact angle by adjusting the types and the proportions of the raw materials and the synergistic effect of the raw materials, the antibacterial property is more than 99.99 percent, the heat distortion temperature is more than 87 ℃, and the water contact angle is more than 85 degrees; the impact resistance is good, and the cantilever beam impact strength is 700J/m2The above; the flexural modulus is 1500MPa or more.
(3) The preparation method of the modified polyester material is simple, the prepared modified polyester material has good oleophobic and hydrophilic properties and good anti-skid properties, and can be used for preparing tableware, the prepared tableware can be cleaned by cleaning with hot water at the temperature of 80-90 ℃ for 1-3 min without adding a cleaning agent, the environment friendliness is good, no water drops are attached to the surface of the cleaned tableware, and the modified polyester material is particularly suitable for application in the field of food.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments.
Unless otherwise specified, various starting materials of the present invention are commercially available or prepared according to conventional methods in the art.
The modified polyester material comprises the following raw materials in parts by weight:
the preparation method of the modified polyester material comprises the following steps: respectively weighing 60-80 parts by weight of copolyester and 5-15 parts by weight of gas-phase SiO22-5 parts of calcium carbonate, 0-2 parts of an antibacterial agent, 5-15 parts of an antistatic agent, 0-1 part of a heat stabilizer, 5-10 parts of an impact modifier, 0-1 part of an antioxidant and 0-3 parts of a pigment, drying, then placing the materials in a mixer for stirring and mixing, adding the mixed materials into a double-screw extruder for melt extrusion, wherein the drying temperature is 90-100 ℃, the drying time is 3-4 hours, and the extrusion temperature of the double-screw extruder from a feeding port to an extrusion die head is respectively as follows: the temperature of the first section is 240-280 ℃, the temperature of the second section is 240-280 ℃, the temperature of the third section is 240-280 ℃, the temperature of the nozzle is 240-280 ℃, the temperature of the die is 40-65 ℃, and the rotating speed of the screw is 40-70 r/min; and cooling and granulating the extruded filaments to obtain the modified polyester material.
Example 1
Respectively weighing 65 parts of copolyester and 15 parts of gas-phase SiO by weight25 parts of calcium carbonate, 2 parts of silver ion activated carbon, 14 parts of ethoxylated amine laurate, 0.7 part of vitamin C, 7 parts of thermoplastic elastomer, 1 part of 2, 2' -methylenebis (4-methyl-6-tert-butylphenol) and 2 parts of pigment, drying, placing into a mixer, stirring and mixing, adding the mixed materials into a double-screw extruder, and carrying out melt extrusion, wherein the drying temperature is 100 ℃, the drying time is 3 hours, and the extrusion temperature of the double-screw extruder from a feeding port to an extrusion die head is respectively as follows: one section is 240-280 ℃, the second section is 240-280 ℃, the third section is 240-280 ℃, the nozzle is 240-280 ℃, the mold is 40-65 ℃, and the screw isThe rotating speed of the rod is 40r/min, and the extruded filament is cooled and granulated to prepare the modified polyester material.
Example 2
Respectively weighing 75 parts by weight of copolyester and 6 parts by weight of gas-phase SiO24 parts of calcium carbonate, 1.5 parts of silver ion silicate, a mixture of silver ion titanate, 11 parts of ethoxylated amine laurate, a mixture of dilauryl phosphate, 0.8 part of bio-epoxidized soybean oil, a mixture of vitamin E, 6 parts of chlorinated polyethylene, an ethylene-vinyl acetate copolymer, a mixture of styrene-butadiene-styrene copolymer, 0.2 part of tris (2, 4-di-tert-butylphenyl) phosphite and 1.5 parts of pigment, drying, stirring and mixing in a mixer, adding the mixed materials into a double-screw extruder, and carrying out melt extrusion, wherein the drying temperature is 110 ℃, the drying time is 3.5 hours, and the extrusion temperature of the double-screw extruder from a feeding port to an extrusion die head is respectively: and the first section is 240-280 ℃, the second section is 240-280 ℃, the third section is 240-280 ℃, the nozzle is 240-280 ℃, the die is 40-65 ℃, the rotating speed of the screw is 50r/min, and the extruded strand silk is cooled and granulated to prepare the modified polyester material.
Example 3
Respectively weighing 65 parts of copolyester and 12 parts of gas-phase SiO by weight22 parts of calcium carbonate, 1 part of silver ion ceramic, 8 parts of ethoxylated amine laurate, a mixture of dilauryl phosphate and glycerol monostearate, 1 part of vitamin C, a mixture of vitamin E, 8 parts of acrylonitrile-butadiene-styrene copolymer, a mixture of methyl methacrylate-butadiene-styrene copolymer, 1 part of 2, 2' -methylenebis (4-methyl-6-tert-butylphenol) and 1 part of pigment, drying, stirring and mixing in a mixer, adding the mixed materials into a double-screw extruder, and carrying out melt extrusion, wherein the drying temperature is 125 ℃, the drying time is 4 hours, and the extrusion temperature of the double-screw extruder from a feeding port to an extrusion die head is respectively as follows: a first section of 240-280 ℃, a second section of 240-280 ℃, a third section of 240-280 ℃, a nozzle of 240-280 ℃, a die of 40-65 ℃, and the rotating speed of the screw rod of 70r/mAnd in, cooling and granulating the extruded filaments to obtain the modified polyester material.
Example 4
Respectively weighing 70 parts of copolyester and 5 parts of gas-phase SiO by weight23 parts of calcium carbonate, 1 part of silver ion phosphate, 10 parts of glycerol monostearate, 0.5 part of biobased epoxidized soybean oil, 5 parts of styrene-butadiene-styrene copolymer, 0.5 part of a mixture of 2, 2' -methylenebis (4-methyl-6-tert-butylphenol) and tris (2, 4-di-tert-butylphenyl) phosphite and 1 part of pigment, drying, stirring and mixing in a mixer, adding the mixed material into a double-screw extruder, and carrying out melt extrusion, wherein the drying temperature is 130 ℃, the drying time is 3 hours, and the extrusion temperature of the double-screw extruder from a feeding port to an extrusion die head is respectively as follows: and the first section is 240-280 ℃, the second section is 240-280 ℃, the third section is 240-280 ℃, the nozzle is 240-280 ℃, the die is 40-65 ℃, the rotating speed of the screw is 60r/min, and the extruded strand silk is cooled and granulated to prepare the modified polyester material.
Example 5
Respectively weighing 80 parts of copolyester and 15 parts of gas-phase SiO by weight25 parts of calcium carbonate, 2 parts of silver ion silicate, 10 parts of a mixture of dilauryl phosphate and glycerol monostearate, 1 part of bio-epoxidized soybean oil, a mixture of vitamin C and vitamin E, 10 parts of ethylene-vinyl acetate copolymer, 1 part of a mixture of 2, 2' -methylenebis (4-methyl-6-tert-butylphenol) and tris (2, 4-di-tert-butylphenyl) phosphite and 2 parts of pigment, drying, stirring and mixing in a mixer, adding the mixed materials into a double-screw extruder, and carrying out melt extrusion, wherein the drying temperature is 110 ℃, the drying time is 4 hours, and the extrusion temperature of the double-screw extruder from a feeding port to an extrusion die head is respectively as follows: and the first section is 240-280 ℃, the second section is 240-280 ℃, the third section is 240-280 ℃, the nozzle is 240-280 ℃, the die is 40-65 ℃, the rotating speed of the screw is 55r/min, and the extruded strand silk is cooled and granulated to prepare the modified polyester material.
Comparative example 1
This comparative example differs from example 1 in that the polyester material used was PET, and the rest was the same as example 1.
Comparative example 2
Comparative example 1 differs in that no gas phase SiO was added2Otherwise, the same as in example 1.
Comparative example 3
Comparative example 1 is different in that calcium carbonate is not added, and the rest is the same as example 1.
The modified polyester materials obtained in examples 1 to 5 and the polyester material obtained in comparative example were subjected to a performance test, and the test reference standards and experimental data are shown in table 1.
TABLE 1
The modified polyester material prepared by the method has good toughness, hydrolytic stability and excellent chemical properties through the adjustment of the types and the proportion of the raw materials and the synergistic effect among the raw materials, and has the functions of antibiosis and heat resistance and the special function of excellent water contact angle; the preparation method of the modified polyester material is simple, the prepared modified polyester material has good oleophobic and hydrophilic properties and good anti-skid properties, and can be used for preparing tableware, the prepared tableware can be cleaned by cleaning with hot water at the temperature of 80-90 ℃ for 1-3 min without adding a cleaning agent, the environment friendliness is good, no water drops are attached to the surface of the cleaned tableware, and the modified polyester material is particularly suitable for application in the field of food.
The present invention is illustrated by the above-mentioned examples, but the present invention is not limited to the above-mentioned detailed process equipment and process flow, i.e. it is not meant to imply that the present invention must rely on the above-mentioned detailed process equipment and process flow to be practiced. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (9)
1. The modified polyester material is characterized by comprising the following raw materials in parts by weight:
the gas phase SiO2The particle size of (A) is 20-30 nm;
the antibacterial agent is a silver ion antibacterial agent;
the heat stabilizer is one or a mixture of at least two of bio-epoxidized soybean oil, vitamin C and vitamin E;
the impact modifier is one or a mixture of at least two of acrylonitrile-butadiene-styrene copolymer, methyl methacrylate-butadiene-styrene copolymer, chlorinated polyethylene, ethylene-vinyl acetate copolymer, styrene-butadiene-styrene copolymer and synthetic rubber.
2. The modified polyester material of claim 1, which comprises the following raw materials in parts by weight:
3. the modified polyester material of claim 1, wherein the silver ion antibacterial agent is one or a mixture of at least two of silver ion activated carbon, silver ion phosphate, silver ion silicate, silver ion titanate, and silver ion ceramic.
4. The modified polyester material of claim 1, wherein the antistatic agent is an ethoxylated aliphatic alkylamine.
5. The modified polyester material of claim 1, wherein the antistatic agent is one or a mixture of at least two of ethoxylated amine laurate, dilauryl phosphate and glycerol monostearate.
6. The modified polyester material of claim 1, wherein the antioxidant is one or a mixture of at least two of beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate, 2' -methylenebis (4-methyl-6-tert-butylphenol), and tris (2, 4-di-tert-butylphenyl) phosphite.
7. A method for preparing the modified polyester material according to claim 1, comprising the steps of: respectively weighing 60-80 parts of PCTG and 5-15 parts of gas-phase SiO by weight22-5 parts of calcium carbonate, 0.1-2 parts of an antibacterial agent, 5-15 parts of an antistatic agent, 0.1-1 part of a heat stabilizer, 5-10 parts of an impact modifier, 0.1-1 part of an antioxidant and 0.1-3 parts of a pigment, drying, placing the materials in a mixer for stirring and mixing, adding the mixed materials into a double-screw extruder for melt extrusion, and cooling and granulating the extruded filaments to obtain the modified polyester material.
8. The preparation method according to claim 7, wherein the drying temperature is 90-100 ℃, and the drying time is 3-4 h.
9. The preparation method according to claim 7, wherein the extrusion temperatures of the twin-screw extruder from the feeding port to the extrusion die are respectively: the temperature of the first section is 240-280 ℃, the temperature of the second section is 240-280 ℃, the temperature of the third section is 240-280 ℃, the temperature of the nozzle is 240-280 ℃, the temperature of the die is 40-65 ℃, and the rotating speed of the screw is 40-70 r/min.
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| CN109337386A (en) * | 2018-10-23 | 2019-02-15 | 新钻塑料科技（上海）有限公司 | A kind of super dry and comfortable thermoplastic elastomer composite material and preparation method thereof of the super dumb light in surface |
| CN110133234B (en) * | 2019-05-17 | 2022-03-29 | 上海第二工业大学 | Method for evaluating heavy metal environmental risk in recycling process of electronic waste plastics |
| CN111334008A (en) * | 2020-04-27 | 2020-06-26 | 物极建筑装饰材料(常州)有限公司 | PETG (polyethylene terephthalate glycol) antibacterial sheet material and preparation method thereof |
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| EP0383978A1 (en) * | 1989-02-23 | 1990-08-29 | General Electric Company | Flame retardant polyester resins |
| DE10007730A1 (en) * | 2000-02-19 | 2001-08-23 | Mitsubishi Polyester Film Gmbh | Transparent, sealable, flame-retardant polyester film, process for its production and its use |
| CN101798446B (en) * | 2009-02-11 | 2012-01-11 | 江苏华信塑业发展有限公司 | PETG (Polyethylene Terephthalate Glycol) printing sheet for RFID (radio frequency identification device) label and manufacture process thereof |
| EP2593513A4 (en) * | 2010-07-13 | 2014-01-22 | Invista Tech Sarl | High dimensional stability polyester compositions |
| CN102337008B (en) * | 2011-07-04 | 2013-01-30 | 顾方明 | Thermoplastic polyester microporous film and preparation method thereof |
| KR101549492B1 (en) * | 2011-12-28 | 2015-09-03 | 제일모직주식회사 | Polyester Resin Composition Having Yellowing Resistance and High Impact Strength |
| CN103804855A (en) * | 2012-11-08 | 2014-05-21 | 上海杰事杰新材料(集团)股份有限公司 | High-strength copolyester and preparation method thereof |
| CN103203934B (en) * | 2013-03-26 | 2015-04-08 | 江苏双星彩塑新材料股份有限公司 | Heat shrinkage copolyester film and preparation method thereof |
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