CN111993741B - Paper-plastic composite material and preparation method thereof - Google Patents

Paper-plastic composite material and preparation method thereof Download PDF

Info

Publication number
CN111993741B
CN111993741B CN202010953238.1A CN202010953238A CN111993741B CN 111993741 B CN111993741 B CN 111993741B CN 202010953238 A CN202010953238 A CN 202010953238A CN 111993741 B CN111993741 B CN 111993741B
Authority
CN
China
Prior art keywords
temperature
paper
extruder
zone
casting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010953238.1A
Other languages
Chinese (zh)
Other versions
CN111993741A (en
Inventor
张会良
潘宏伟
边俊甲
韩立晶
贾世玲
金宝昌
张也
杨慧丽
董丽松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changchun Institute of Applied Chemistry of CAS
Original Assignee
Changchun Institute of Applied Chemistry of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Changchun Institute of Applied Chemistry of CAS filed Critical Changchun Institute of Applied Chemistry of CAS
Priority to CN202010953238.1A priority Critical patent/CN111993741B/en
Publication of CN111993741A publication Critical patent/CN111993741A/en
Application granted granted Critical
Publication of CN111993741B publication Critical patent/CN111993741B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
    • B29C41/30—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length incorporating preformed parts or layers, e.g. moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/582—Tearability
    • B32B2307/5825—Tear resistant
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • 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
    • 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
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention relates to the technical field of biodegradable high polymer materials, in particular to a paper-plastic composite material and a preparation method thereof. The paper-plastic composite material is prepared by rolling a casting film and a paper layer; the cast film is prepared from the following raw materials of polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and silicon dioxide: the mass ratio of the polylactic acid to the polybutylene adipate-terephthalate (PBAT) to the polyethylene glycol adipate to the silicon dioxide is 4.9-92.9: 5-93: 2-10: 0.1 to 0.5. According to the invention, the tape-casting film and the paper layer are rolled to prepare the paper-plastic composite material, and the obtained paper-plastic composite material has excellent tensile strength and right-angle tear strength. Experiments show that the tensile strength of the paper-plastic composite material is greater than 26MPa, the tensile elongation at break is not less than 2.5%, and the right-angle tear strength is greater than 50 KN/m.

Description

Paper-plastic composite material and preparation method thereof
Technical Field
The invention relates to the technical field of biodegradable high polymer materials, in particular to a paper-plastic composite material and a preparation method thereof.
Background
The materials of the cast film are mainly polyethylene and polypropylene, and few reports of preparing the completely biodegradable cast film by using polylactic acid exist. The polylactic acid cast film is divided into a melting method and a solvent method, the melting method is less researched, and the melt is easy to crack under the action of gravity and difficult to form a film effectively due to low melt strength of the polylactic acid; meanwhile, the polylactic acid film is brittle and hard, is easy to shrink and wrinkle in the cooling process, has low tearing strength and is a notch sensitive material. Common small molecular plasticizers, such as citrate esters, generate a large amount of irritant volatile matters in the casting process of plasticized polylactic acid, influence human health and production environment, and are not suitable for casting processing. Wangzao et al have disclosed an invention patent, a novel polylactic acid material and a processing technique (patent publication No. CN104371289A), and reported a method for preparing laminated paper by using starch, polylactic acid, E-20 resin, adhesive borax or sodium borate, etc., lubricant stearic acid, antioxidant sorbitol, blending and extruding to prepare a blend, and then laminating and compounding paper. Wangzao et al also discloses an invention patent, a new polylactic acid material for paper lamination and a processing technology thereof (patent publication No. CN104452459A), and reports a method for preparing laminated paper by using starch, polylactic acid, epoxy resin, adhesive, whitening agent, antioxidant, blending and extruding to prepare a blend, and then laminating and compounding the paper. Wujing Yang et al of Shenzhen Guanghua Weiye Endustyman, discloses an invention patent, a biodegradable laminating paper material and a preparation method thereof (patent publication No. CN102558797A), and reports a method for preparing laminating paper by blending and extruding 60-90 wt% of polylactic acid, 5-40 wt% of degradable toughening resin, 1-10 wt% of elastomer, 0.1-1.0 wt% of processing aid and 0.1-1.0 wt% of anti-aging agent to prepare a blend and then compounding the laminating film and the paper.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a paper-plastic composite material and a preparation method thereof, and the paper-plastic composite material provided by the present invention has superior tensile strength and right-angle tear strength.
The invention provides a paper-plastic composite material, which is prepared by rolling a casting film and a paper layer;
the cast film is prepared from the following raw materials of polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and silicon dioxide:
the mass ratio of the polylactic acid to the polybutylene adipate to the polyethylene glycol adipate to the silicon dioxide is 4.9-92.9: 5-93: 2-10: 0.1 to 0.5.
Preferably, the polylactic acid has a number average molecular weight of 5 × 104～2×105g/mol。
Preferably, the polydiethylene glycol adipate has a number average molecular weight of 2 × 103～2×104g/mol。
Preferably, the thickness of the casting film is 5-50 μm.
Preferably, the paper layer is paper, and the thickness of the paper layer is 20-400 μm.
The invention also provides a preparation method of the paper-plastic composite material, which comprises the following steps:
A) extruding and granulating polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and silicon dioxide, and drying to obtain a mixed resin material;
B) and carrying out tape casting on the mixed resin material, and carrying out roll-in compounding on a film obtained by tape casting and a paper layer in a molten state to obtain the paper-plastic composite material.
Preferably, in step a), the extrusion granulation is performed in a twin-screw extruder;
the head temperature of the double-screw extruder is 180-185 ℃, and the screw rotating speed is 100-300 rpm.
Preferably, in the step B), the rotation speed of the cast screw is 40-300 r/min.
The invention provides a paper-plastic composite material, which is prepared by rolling a casting film and a paper layer; the cast film is prepared from the following raw materials of polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and silicon dioxide: the mass ratio of the polylactic acid to the polybutylene adipate-terephthalate (PBAT) to the polyethylene glycol adipate to the silicon dioxide is 4.9-92.9: 5-93: 2-10: 0.1 to 0.5. According to the invention, the tape-casting film and the paper layer are rolled to prepare the paper-plastic composite material, and the obtained paper-plastic composite material has excellent tensile strength and right-angle tear strength. Polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and paper layers can be biodegraded, and the prepared paper-plastic composite material can be used for food and medicine packaging, medical operation tablecloth, medical sanitary scarves, medical instrument packaging and the like.
Experimental results show that the tensile strength of the paper-plastic composite material provided by the invention is greater than 26MPa, the tensile elongation at break is not less than 2.5%, and the right-angle tear strength is greater than 50 KN/m.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, 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 invention provides a paper-plastic composite material, which is prepared by rolling a casting film and a paper layer;
the cast film is prepared from the following raw materials of polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and silicon dioxide:
the mass ratio of the polylactic acid to the polybutylene adipate-terephthalate (PBAT) to the polyethylene glycol adipate to the silicon dioxide is 4.9-92.9: 5-93: 2-10: 0.1 to 0.5.
In certain embodiments of the invention, the polylactic acid (PLA) has a number average molecular weight of 5 × 104～2×105g/mol. In certain embodiments of the present invention, the polylactic acid is 4032D, and in particular, 4032D manufactured by NatureWorks, inc.
In certain embodiments of the invention, the polydiethylene glycol adipate (PDEGA) has a number average molecular weight of 2 × 103～2×104g/mol。
The source of the poly (diethylene glycol adipate) is not particularly limited in the present invention, and the poly (diethylene glycol adipate) can be prepared by a preparation method of the poly (diethylene glycol adipate) well known to those skilled in the art. In certain embodiments of the present invention, the polydiethylene glycol adipate is prepared by the polycondensation of diethylene glycol with adipic acid or adipic anhydride in the presence of a catalyst.
In certain embodiments of the invention, the polybutylene adipate terephthalate (PBAT) has a weight average molecular weight of 7X 104～5×105g/mol. Specifically, PBAT produced by polyester GmbH of Xinjiang blue mountain Tunghe can be selected, and the model is TH 801T.
In certain embodiments of the invention, the SiO2The model of (D) is ZEOSIL175, and is purchased from Qingdao Rona Pluronic white carbon black Co.
In certain embodiments of the invention, the PLA, PBAT, PDEGA and SiO2The mass ratio of (A) to (B) is 4.9: 90: 5: 0.1, 14.5: 80: 5: 0.5, 24.7: 70: 5: 0.3, 34.7: 60: 5: 0.3, 44.8: 50: 5: 0.2, 54.8: 40: 5: 0.2, 62.8: 30: 7: 0.2, 69.5: 20: 10: 0.5 or 87.8: 10: 2: 0.2.
in certain embodiments of the present invention, the cast film has a thickness of 5 to 50 μm. In some embodiments, the cast film has a thickness of 10 to 30 μm.
In certain embodiments of the present invention, the paper layer is paper. In some embodiments of the present invention, the thickness of the paper layer is 20 to 400 μm. In some embodiments, the thickness of the paper layer is 80-400 μm.
In some embodiments of the invention, the thickness of the paper-plastic composite material is 25-450 μm. In some embodiments, the thickness of the paper-plastic composite material is 90-430 μm.
The invention also provides a preparation method of the paper-plastic composite material, which comprises the following steps:
A) extruding and granulating polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and silicon dioxide, and drying to obtain a mixed resin material;
B) and carrying out tape casting on the mixed resin material, and carrying out roll-in compounding on a film obtained by tape casting and a paper layer in a molten state to obtain the paper-plastic composite material.
In the preparation method of the paper-plastic composite material provided by the invention, the raw material components and the proportion are the same as above, and are not described again.
The invention firstly extrudes and granulizes polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and silicon dioxide, and obtains the mixed resin material after drying.
In certain embodiments of the invention, the extrusion granulation is performed in a twin screw extruder.
In some embodiments of the invention, in the extrusion granulation process, the temperature of the first zone of the extruder is 150-170 ℃, the temperature of the second zone of the extruder is 170-190 ℃, the temperature of the third zone of the extruder is 180-200 ℃, the temperature of the fourth zone of the extruder is 180-200 ℃, the temperature of the fifth zone of the extruder is 190-200 ℃, the temperature of the sixth zone of the extruder is 190-200 ℃, the temperature of the seventh zone of the extruder is 190-200 ℃, and the temperature of the eighth zone of the extruder is 180-200 ℃. In certain embodiments, the temperature in the first zone of the extruder is 160 ℃. In certain embodiments, the temperature in the second zone of the extruder is 180 ℃. In certain embodiments, the temperature in the three zones of the extruder is 190 ℃. In certain embodiments, the temperature in the four zones of the extruder is 190 ℃. In certain embodiments, the temperature of the five zones of the extruder is 195 ℃. In certain embodiments, the temperature in the six zones of the extruder is 195 ℃. In certain embodiments, the temperature in the seventh zone of the extruder is 195 ℃. In certain embodiments, the temperature in the eight zones of the extruder is 190 ℃.
In certain embodiments of the present invention, the head temperature of the twin-screw extruder is 180 to 185 ℃.
In some embodiments of the present invention, the screw rotation speed during the extrusion granulation process is 100 to 300 rpm.
The method and parameters for drying are not particularly limited in the present invention, and those known to those skilled in the art can be used.
And after obtaining the mixed resin material, carrying out tape casting on the mixed resin material, and carrying out roll-in compounding on a film obtained by tape casting and a paper layer in a molten state to obtain the paper-plastic composite material.
In certain embodiments of the invention, the casting is performed in a casting machine.
In some embodiments of the invention, in the casting process, the temperature of the first zone of the casting machine is 150-170 ℃, the temperature of the second zone of the casting machine is 160-180 ℃, the temperature of the third zone of the casting machine is 170-190 ℃, the temperature of the fourth zone of the casting machine is 180-200 ℃, and the temperature of the fifth zone of the casting machine is 190-210 ℃. In certain embodiments, the temperature of the first zone of the casting machine is 160 ℃. In certain embodiments, the temperature of the second zone of the casting machine is 170 ℃. In certain embodiments, the temperature in the three zones of the casting machine is 180 ℃. In certain embodiments, the temperature of the four zones of the casting machine is 190 ℃. In certain embodiments, the temperature of the five zones of the casting machine is 200 ℃.
In some embodiments of the invention, the screw rotation speed of the casting is 40-300 r/min during the casting process. In certain embodiments, the screw speed of casting is 150r/min during said casting.
In some embodiments of the present invention, the roll lamination of the cast film to the paper layer in the molten state further comprises rolling.
In some embodiments of the invention, before the rolling, the paper-plastic composite material with the required thickness can be obtained by adjusting the traction speed of the paper layer traction roller.
The source of the above-mentioned raw materials is not particularly limited in the present invention, and may be generally commercially available.
According to the invention, the tape-casting film and the paper layer are rolled to prepare the paper-plastic composite material, and the obtained paper-plastic composite material has excellent tensile strength and right-angle tear strength. Polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and paper layers can be biodegraded, and the prepared paper-plastic composite material can be used for food and medicine packaging, medical operation tablecloth, medical sanitary scarves, medical instrument packaging and the like. In addition, the preparation method of the paper-plastic composite material provided by the invention is simple in process.
Experimental results show that the tensile strength of the paper-plastic composite material provided by the invention is greater than 26MPa, the tensile elongation at break is not less than 2.5%, and the right-angle tear strength is greater than 50 KN/m.
In order to further illustrate the present invention, the following detailed description of a paper-plastic composite material and a method for preparing the same are provided in connection with examples, which should not be construed as limiting the scope of the present invention.
The starting materials used in the following examples are all commercially available.
PLA, model 4032D, is available from polylactic acid manufactured by NatureWorks, Inc.; the weight average molecular weight of PDEGA is 3.9 × 103g/mol；SiO2The model of the product is ZEOSIL175, which is purchased from Qingdao Rhonic white carbon black Limited company;
the extruder is an SHJ-20 double-screw extruder produced by the Thai plastic machinery Co.Ltd; the casting machine is a casting machine with model number DL-1300, which is produced by Kelvin plastics machinery Co.
The tensile properties in the examples were tested according to the GB/T1010.3-2006 standard; the right angle tear strength was tested according to QB/T1130-91.
Example 1
Preparing a mixed resin material: weigh 4.9g PLA, 90g PBAT, 0.1g SiO2Mixing, adding into a double-screw extruder, and metering with a metering pump at the liquid inlet of the extruderStep 5g of PDEGA is added, and the temperature of a first zone of the extruder is set as follows: 160 ℃, 180 ℃ in the second zone, 190 ℃ in the third zone, 190 ℃ in the fourth zone, 195 ℃ in the fifth zone, 195 ℃ in the sixth zone, 195 ℃ in the seventh zone, 190 ℃ in the eighth zone, 185 ℃ in the head, and preferably 300rpm in the rotation speed of the screw, extruding, granulating, and drying to obtain the mixed resin material.
Processing the mixed resin material by using a casting machine, and setting the temperature of a first region of a main machine of the casting machine as follows: 160 ℃, 170 ℃ in the second zone, 180 ℃ in the third zone, 190 ℃ in the fourth zone, 200 ℃ in the fifth zone, 210 ℃ in the first zone, 210 ℃ in the second zone, 210 ℃ in the third zone, 210 ℃ in the fourth zone, 210 ℃ in the fifth zone, 150rpm in screw speed of casting, processing into casting film with thickness of 13-17 μm, rolling and compounding with paper (with thickness of 95-105 μm) at the outlet of the casting machine, adjusting the traction speed of a paper traction roller, and rolling to obtain the paper-plastic composite material with thickness of 108-122 μm.
The tensile strength, the tensile elongation at break and the right-angle tear strength of the paper-plastic composite material are detected, and the test results are listed in table 1.
Example 2
Preparing a mixed resin material: 14.5g of PLA, 80g of PBAT and 0.5g of SiO were weighed2And uniformly mixing, adding the mixture into a double-screw extruder, metering and synchronously adding 5g of PDEGA from a liquid feeding port of the extruder by a metering pump, and performing the same other steps as the example 1 to obtain the paper-plastic composite material.
The tensile strength, the tensile elongation at break and the right-angle tear strength of the paper-plastic composite material are detected, and the test results are listed in table 1.
Example 3
Preparing a mixed resin material: 24.7g of PLA, 70g of PBAT and 0.3g of SiO were weighed2And uniformly mixing, adding the mixture into a double-screw extruder, metering and synchronously adding 5g of PDEGA from a liquid feeding port of the extruder by a metering pump, and performing the same other steps as the example 1 to obtain the paper-plastic composite material.
The tensile strength, the tensile elongation at break and the right-angle tear strength of the paper-plastic composite material are detected, and the test results are listed in table 1.
Example 4
Preparing a mixed resin material: 34.7g of PLA, 60g of PBAT and 0.3g of SiO were weighed2And uniformly mixing, adding the mixture into a double-screw extruder, metering and synchronously adding 5g of PDEGA from a liquid feeding port of the extruder by a metering pump, and performing the same other steps as the example 1 to obtain the paper-plastic composite material.
The tensile strength, the tensile elongation at break and the right-angle tear strength of the paper-plastic composite material are detected, and the test results are listed in table 1.
Example 5
Preparing a mixed resin material: 44.8g of PLA, 50g of PBAT and 0.2g of SiO were weighed2And uniformly mixing, adding the mixture into a double-screw extruder, metering and synchronously adding 5g of PDEGA from a liquid feeding port of the extruder by a metering pump, and performing the same other steps as the example 1 to obtain the paper-plastic composite material.
The tensile strength, the tensile elongation at break and the right-angle tear strength of the paper-plastic composite material are detected, and the test results are listed in table 1.
Example 6
Preparing a mixed resin material: 54.8g of PLA, 40g of PBAT and 0.2g of SiO were weighed2And uniformly mixing, adding the mixture into a double-screw extruder, metering and synchronously adding 5g of PDEGA from a liquid feeding port of the extruder by a metering pump, and performing the same other steps as the example 1 to obtain the paper-plastic composite material.
The tensile strength, the tensile elongation at break and the right-angle tear strength of the paper-plastic composite material are detected, and the test results are listed in table 1.
Example 7
Preparing a mixed resin material: 62.8g of PLA, 30g of PBAT and 0.2g of SiO were weighed2And uniformly mixing, adding the mixture into a double-screw extruder, metering and synchronously adding 7g of PDEGA from a liquid feeding port of the extruder by a metering pump, and performing the same other steps as the example 1 to obtain the paper-plastic composite material.
The tensile strength, the tensile elongation at break and the right-angle tear strength of the paper-plastic composite material are detected, and the test results are listed in table 1.
Example 8
Preparing a mixed resin material: 69.5g of PLA, 20g of PBAT and 0.5g of SiO were weighed2And uniformly mixing, adding the mixture into a double-screw extruder, metering and synchronously adding 10g of PDEGA from a liquid feeding port of the extruder by a metering pump, and performing the same other steps as the example 1 to obtain the paper-plastic composite material.
The tensile strength, the tensile elongation at break and the right-angle tear strength of the paper-plastic composite material are detected, and the test results are listed in table 1.
Example 9
Preparing a mixed resin material: 87.8g of PLA, 10g of PBAT and 0.2g of SiO were weighed2And uniformly mixing, adding the mixture into a double-screw extruder, metering and synchronously adding 2g of PDEGA from a liquid feeding port of the extruder by a metering pump, and performing the same other steps as the example 1 to obtain the paper-plastic composite material.
The tensile strength, the tensile elongation at break and the right-angle tear strength of the paper-plastic composite material are detected, and the test results are listed in table 1.
TABLE 1 Performance test results for paper-plastic composites of examples 1-9
Figure BDA0002677733320000081
As can be seen from Table 1, the tensile strength of the paper-plastic composite material provided by the invention is greater than 26MPa, the tensile elongation at break is not less than 2.5%, and the right-angle tear strength is greater than 50 KN/m.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. A paper-plastic composite material is prepared by rolling a casting film and a paper layer;
the casting film is prepared from raw materials; the raw materials consist of polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and silicon dioxide;
the mass ratio of the polylactic acid to the polybutylene adipate to the polyethylene glycol adipate to the silicon dioxide is 4.9-92.9: 5-93: 2-10: 0.1 to 0.5;
the thickness of the casting film is 5-50 mu m;
the thickness of the paper layer is 20-400 mu m;
the preparation method of the paper-plastic composite material comprises the following steps:
A) extruding and granulating polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and silicon dioxide, and drying to obtain a mixed resin material;
in the extrusion granulation process, the temperature of the first zone of the extruder is 150-170 ℃, the temperature of the second zone of the extruder is 170-190 ℃, the temperature of the third zone of the extruder is 180-200 ℃, the temperature of the fourth zone of the extruder is 180-200 ℃, the temperature of the fifth zone of the extruder is 190-200 ℃, the temperature of the sixth zone of the extruder is 190-200 ℃, the temperature of the seventh zone of the extruder is 190-200 ℃, and the temperature of the eighth zone of the extruder is 180-200 ℃; the temperature of the machine head is 180-185 ℃, and the rotating speed of the screw is 100-300 rpm;
B) carrying out tape casting on the mixed resin material, and carrying out roll-in compounding on a film obtained by tape casting and a paper layer in a molten state to obtain a paper-plastic composite material;
in the casting process, the temperature of a first casting machine area is 150-170 ℃, the temperature of a second casting machine area is 160-180 ℃, the temperature of a third casting machine area is 170-190 ℃, the temperature of a fourth casting machine area is 180-200 ℃, and the temperature of a fifth casting machine area is 190-210 ℃;
the rotational speed of the screw for casting is 40-300 r/min.
2. A paper-plastic composite according to claim 1, wherein the poly-emulsion isThe number average molecular weight of the acid is 5X 104～2×105g/mol。
3. A paper-plastic composite according to claim 1, characterized in that the polydiethylene glycol adipate has a number average molecular weight of 2 x 103～2×104g/mol。
4. A process for the preparation of a paper-plastic composite as claimed in claim 1, comprising the steps of:
A) extruding and granulating polylactic acid, polybutylene adipate-terephthalate, polyethylene glycol adipate and silicon dioxide, and drying to obtain a mixed resin material;
in the extrusion granulation process, the temperature of the first zone of the extruder is 150-170 ℃, the temperature of the second zone of the extruder is 170-190 ℃, the temperature of the third zone of the extruder is 180-200 ℃, the temperature of the fourth zone of the extruder is 180-200 ℃, the temperature of the fifth zone of the extruder is 190-200 ℃, the temperature of the sixth zone of the extruder is 190-200 ℃, the temperature of the seventh zone of the extruder is 190-200 ℃, and the temperature of the eighth zone of the extruder is 180-200 ℃; the temperature of the machine head is 180-185 ℃, and the rotating speed of the screw is 100-300 rpm;
B) carrying out tape casting on the mixed resin material, and carrying out roll-in compounding on a film obtained by tape casting and a paper layer in a molten state to obtain a paper-plastic composite material;
in the casting process, the temperature of a first casting machine area is 150-170 ℃, the temperature of a second casting machine area is 160-180 ℃, the temperature of a third casting machine area is 170-190 ℃, the temperature of a fourth casting machine area is 180-200 ℃, and the temperature of a fifth casting machine area is 190-210 ℃;
the rotational speed of the screw for casting is 40-300 r/min.
5. The process according to claim 4, wherein in step A), the extrusion granulation is carried out in a twin-screw extruder.
CN202010953238.1A 2020-09-11 2020-09-11 Paper-plastic composite material and preparation method thereof Active CN111993741B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010953238.1A CN111993741B (en) 2020-09-11 2020-09-11 Paper-plastic composite material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010953238.1A CN111993741B (en) 2020-09-11 2020-09-11 Paper-plastic composite material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN111993741A CN111993741A (en) 2020-11-27
CN111993741B true CN111993741B (en) 2022-02-22

Family

ID=73469170

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010953238.1A Active CN111993741B (en) 2020-09-11 2020-09-11 Paper-plastic composite material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN111993741B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113956520A (en) * 2021-12-09 2022-01-21 雄县恒通工贸有限责任公司 Method for manufacturing biodegradable cast film paper
CN115892736A (en) * 2022-11-07 2023-04-04 山东联欣环保科技有限公司 Biodegradable paper-plastic composite film and preparation method and application thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106633722A (en) * 2016-11-21 2017-05-10 广州医科大学 Anti-tearing biodegradable material with high toughness and preparation method of anti-tearing biodegradable material
CN107237465A (en) * 2017-06-28 2017-10-10 广东玉兰集团股份有限公司 A kind of Degradable environment protection wallpaper
CN107902258A (en) * 2017-09-28 2018-04-13 武汉华丽生物股份有限公司 Degradable paper-plastic composite film paper and preparation method thereof
CN110172232A (en) * 2019-05-31 2019-08-27 海南海达丰实业有限公司 A kind of full-biodegradable material can be applied to paper lamination and its manufacturing method
CN110629586A (en) * 2019-09-04 2019-12-31 刘天树 Processing technology of environment-friendly degradable resin coated paper
CN110628185A (en) * 2019-07-24 2019-12-31 浙江中科应化科技有限公司 Poly (butylene terephthalate) -adipate/poly (methyl ethylene carbonate) full-biodegradable film and preparation method thereof
CN111087773A (en) * 2018-10-23 2020-05-01 海门市源美美术图案设计有限公司 PLA/PBAT/nano SiO2Method for preparing composite material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005031975A1 (en) * 2005-07-08 2007-01-11 Bayer Materialscience Ag PUR polyester flexible foams based on polyetheresterpolyols
EP2855584A1 (en) * 2012-06-05 2015-04-08 Metabolix, Inc. Biobased rubber modified biodegradable polymer blends
KR20180042004A (en) * 2016-10-17 2018-04-25 롯데정밀화학 주식회사 Biodegradable resin compound and method of manufacturing thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106633722A (en) * 2016-11-21 2017-05-10 广州医科大学 Anti-tearing biodegradable material with high toughness and preparation method of anti-tearing biodegradable material
CN107237465A (en) * 2017-06-28 2017-10-10 广东玉兰集团股份有限公司 A kind of Degradable environment protection wallpaper
CN107902258A (en) * 2017-09-28 2018-04-13 武汉华丽生物股份有限公司 Degradable paper-plastic composite film paper and preparation method thereof
CN111087773A (en) * 2018-10-23 2020-05-01 海门市源美美术图案设计有限公司 PLA/PBAT/nano SiO2Method for preparing composite material
CN110172232A (en) * 2019-05-31 2019-08-27 海南海达丰实业有限公司 A kind of full-biodegradable material can be applied to paper lamination and its manufacturing method
CN110628185A (en) * 2019-07-24 2019-12-31 浙江中科应化科技有限公司 Poly (butylene terephthalate) -adipate/poly (methyl ethylene carbonate) full-biodegradable film and preparation method thereof
CN110629586A (en) * 2019-09-04 2019-12-31 刘天树 Processing technology of environment-friendly degradable resin coated paper

Also Published As

Publication number Publication date
CN111993741A (en) 2020-11-27

Similar Documents

Publication Publication Date Title
CN101864132B (en) Fusion preparation method of polyvinyl alcohol film
CN111993741B (en) Paper-plastic composite material and preparation method thereof
KR101676044B1 (en) Fragranced water-sensitive film
CN1771281A (en) Biodegradable resin film or sheet and process for producing the same
KR20180023037A (en) Natural biopolymer thermoplastic films
Jiang et al. Structure and improved properties of PPC/PBAT blends via controlling phase morphology based on melt viscosity
US8906488B2 (en) Biodegradable blends and films having nano-structural features
KR20160018797A (en) Absorbent article containing a porous polyolefin film
JP2005501927A (en) Processing of polyhydroxyalkanoates using nucleating agents and plasticizers
CN107936430A (en) High fluidity polyvinyl alcohol that thermoplastification is modified, cast film materials and preparation method thereof
CN103483785B (en) A kind of PETG heat-shrinkable film and preparation method thereof
CN110835417A (en) Barrier degradable antibacterial food preservative film and preparation method and application thereof
CN112500611B (en) Biodegradable plastic bag and preparation method thereof
CN114889285A (en) Low-temperature heat-sealing biodegradable composite film and preparation process thereof
JP2004358721A (en) Lactic acid-based polymer multilayered film
CN109553934A (en) Using the PBS/PBAT blending and modifying Biodegradable resin and preparation method thereof of chain extender preparation
JP2010163203A (en) Wrapping film
JP2004149679A (en) Biodegradable porous film and manufacturing method therefor
JP2004314460A (en) Biodegradable composite
JP6260377B2 (en) Biodegradable film
JP5396688B2 (en) Polyester film
CN112341776A (en) Polylactic acid film with linear easy-tearing function and preparation method thereof
JP4856442B2 (en) Method for producing stretched film by low-temperature stretching of polyglycolic acid resin composition
CN115707575A (en) Multilayer film and preparation method and application thereof
JPWO2010005043A1 (en) Polylactic acid resin film

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant