CN116731481A - PBAT/PBS biodegradable composite material reinforced by nucleating agent and chain extender and preparation method thereof - Google Patents
PBAT/PBS biodegradable composite material reinforced by nucleating agent and chain extender and preparation method thereof Download PDFInfo
- Publication number
- CN116731481A CN116731481A CN202310277106.5A CN202310277106A CN116731481A CN 116731481 A CN116731481 A CN 116731481A CN 202310277106 A CN202310277106 A CN 202310277106A CN 116731481 A CN116731481 A CN 116731481A
- Authority
- CN
- China
- Prior art keywords
- pbat
- pbs
- composite material
- chain extender
- nucleating agent
- 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.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 43
- 239000004970 Chain extender Substances 0.000 title claims abstract description 38
- 239000002667 nucleating agent Substances 0.000 title claims abstract description 28
- 229920001896 polybutyrate Polymers 0.000 title claims abstract 20
- 238000002360 preparation method Methods 0.000 title abstract description 13
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000001035 drying Methods 0.000 claims description 18
- 238000001746 injection moulding Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 8
- 229920000704 biodegradable plastic Polymers 0.000 abstract description 6
- 239000002671 adjuvant Substances 0.000 abstract description 2
- 238000002425 crystallisation Methods 0.000 abstract description 2
- 230000008025 crystallization Effects 0.000 abstract description 2
- 239000011159 matrix material Substances 0.000 abstract description 2
- 229920000642 polymer Polymers 0.000 abstract description 2
- 229920002961 polybutylene succinate Polymers 0.000 description 63
- 239000004631 polybutylene succinate Substances 0.000 description 63
- 239000000203 mixture Substances 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000010008 shearing Methods 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000004621 biodegradable polymer Substances 0.000 description 3
- 229920002988 biodegradable polymer Polymers 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 description 2
- 229920000954 Polyglycolide Polymers 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 238000009264 composting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 polybutylene terephthalate adipate Polymers 0.000 description 2
- 239000004633 polyglycolic acid Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 235000012222 talc Nutrition 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229920003232 aliphatic polyester Polymers 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- 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
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
- C08G63/914—Polymers modified by chemical after-treatment derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/916—Dicarboxylic acids and dihydroxy compounds
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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
- C08L2205/24—Crystallisation aids
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention discloses a PBAT/PBS biodegradable composite material reinforced by a nucleating agent and a chain extender and a preparation method thereof, wherein the PBAT/PBS biodegradable composite material comprises the following components in parts by weight: 50-90 parts of PBAT, 10-50 parts of PBS, 1-9 parts of nucleating agent talcum powder and 0.1-0.9 part of chain extender ADR-4468. The invention is modified by utilizing PBAT/PBS, and a nucleating agent and a chain extender are respectively added. Nucleating agents are a class of adjuvants used to increase the crystallinity of crystalline polymers and to increase their crystallization rate. The crystallinity is improved due to the addition of the nucleating agent, so that the interfacial compatibility of the PBAT and the PBS is increased, the mechanical property and the dimensional stability of the biodegradable composite material are improved, the dosage of the biodegradable plastic matrix material is reduced due to the addition of the talcum powder, the cost of the biodegradable material is reduced, the performance of the biodegradable composite material is comprehensively improved, and the market application of the biodegradable composite material is enlarged.
Description
Technical Field
The invention relates to the field of biodegradable plastics, in particular to a PBAT/PBS biodegradable composite material reinforced by a nucleating agent and a chain extender and a preparation method thereof.
Background
The fully biodegradable plastic is degraded by microorganisms existing in nature under conditions such as soil and/or sandy soil, and/or specific conditions such as composting or anaerobic digestion or in aqueous medium, and is finally degraded into carbon dioxide (CO) 2 ) Or/and methane (CH) 4 ) Water (H) 2 O) and mineralized inorganic salts of the elements contained therein, and plastic of nascent biomass, and common examples thereof include polybutylene terephthalate adipate (PBAT), polybutylene succinate (PBS), polylactic acid (PLA), polyglycolic acid (PGA), and the like. The product is prepared by taking the full-biodegradable plastic resin as a main raw material, and can be completely biodegraded in modes of composting, landfill and the like after use, so that adverse effects on the environment are avoided, and the product is a sustainable effective way for solving the pollution of the traditional plastic.
Among biodegradable polymers, PBAT has both good ductility and elongation at break and also good heat resistance and impact properties due to its aromatic-aliphatic components, showing a good combination of strength and flexibility. The presence of the ester linkages on the backbone makes PBAT readily biodegradable in a variety of environments for disposable applications. Is one of the best degradable materials which are very active in the research of biodegradable plastics and applied to the market at present.
PBS is an aliphatic polyester synthesized by polycondensation of succinic acid and 1, 4-butanediol. It can be produced from renewable resources such as sugar, glucose, starch, xylose and the like which are obtained by bacterial fermentation. Is easy to be decomposed and metabolized by various microorganisms in nature or enzymes in animals and plants, and finally decomposed into carbon dioxide and water, and is a typical completely biodegradable polymer material. Because PBS has semicrystalline property, thermal stability, chemical stability, excellent mechanical property and mechanical strength, and the melting point is lower than that of other commercial biodegradable polymers, the PBS has wide application in the field of biodegradable materials.
The PBAT and the PBS have similar composition structures in structure, and the excellent ductility and toughness of the PBAT can be complemented with the advantage of good rigidity of the PBS. However, when the ratio of the two is similar, the compatibility is poor, and phase separation is easy to generate, so that the performance of the PBAT/PBS composite material is difficult to embody. While adding a nucleating or compatibilizing agent when the two materials are blended is an effective way to increase compatibility. Aiming at the problem, the invention provides the PBAT/PBS biodegradable composite material with the enhanced optimal nucleating agent content and the optimal chain extender content and the preparation method thereof by a controlled variable method, and the material is expected to be applied to development and application of biodegradable shopping bags, biodegradable mulching films, biodegradable adhesive tapes and the like.
Disclosure of Invention
The invention aims to: the invention aims to solve the technical problem of providing a PBAT/PBS biodegradable composite material reinforced by a nucleating agent and a chain extender and a preparation method thereof, so as to solve the problem of poor compatibility of PBAT/PBS blending, thereby improving the mechanical property and the processing property of the PBAT/PBS biodegradable composite material.
Technical proposal
In order to achieve the aim, the invention adopts the following technical scheme.
A PBAT/PBS biodegradable composite material enhanced by a nucleating agent and a chain extender comprises the following components in parts by mass:
preferably, the PBAT melt index (190 ℃ C., 2160 g) is about 4-6g/10min, and the melting point is 110-130 ℃.
Preferably, the PBS melt index (190 ℃ C., 2160 g) is about 3.5-5.5g/10min, and the melting point is about 115 ℃.
Preferably, the number of the nucleating agent talc is 3000 mesh.
The invention further provides a preparation method of the PBAT/PBS biodegradable composite material reinforced by the nucleating agent and the chain extender, which comprises the following steps:
step (1), drying PBAT, PBS and talcum powder for 8 hours in an electrothermal constant temperature drying oven at 80 ℃;
step (2), placing the dried PBAT/PBS, PBAT/PBS/talcum powder and PBAT/PBS/ADR-4468 in a high-speed mixer, and mixing for 15min at room temperature of 500 r/min;
step (3), extruding the PBAT/PBS, PBAT/PBS/talcum powder and PBAT/PBS/ADR-4468 which are mixed by a high-speed mixer at the screw rotating speed of 110r/min by a double-screw extruder (the temperatures of a first area and a second area of the double-screw extruder are 160 ℃,170 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃ and 180 ℃) respectively, cooling by a water tank, granulating, preparing the PBAT/PBS blending modified biodegradable composite material with the particle size of 2+/-0.5 mm, and drying for 12h at the 80 ℃ in an electrothermal constant-temperature drying oven;
and (4) injecting the particles obtained in the step (3) into standard test sample bars by using an injection molding machine, wherein the temperature of a nozzle of the injection molding machine is 180 ℃, the temperatures of three temperature areas are 180 ℃,180 ℃ and the injection molding pressure is 5MPa.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
the invention provides a PBAT/PBS biodegradable composite material reinforced by a nucleating agent and a chain extender and a preparation method thereof. The beneficial effects are as follows:
1. the PBAT/PBS biodegradable composite material enhanced by the nucleating agent and the chain extender and the preparation method thereof are modified by utilizing the PBAT/PBS, and the nucleating agent and the chain extender are respectively added. Nucleating agents are a class of adjuvants used to increase the crystallinity of polymers and to increase their crystallization rate. The crystallinity is improved due to the addition of the nucleating agent, so that the interfacial compatibility of the PBAT and the PBS is increased, the mechanical property and the dimensional stability of the biodegradable composite material are improved, the dosage of the biodegradable plastic matrix material is reduced due to the addition of the talcum powder, the cost of the biodegradable material is reduced, the performance of the biodegradable composite material is comprehensively improved, and the market application of the biodegradable composite material is enlarged.
2. The PBAT/PBS biodegradable composite material enhanced by the nucleating agent and the chain extender and the preparation method thereof are modified by utilizing the PBAT/PBS, and the nucleating agent and the chain extender are respectively added. The addition of the chain extender enables the hydroxyl end and carboxyl end of the PBAT and the PBS to react with the epoxy group of the chain extender under the actions of double-screw melting, shearing, high temperature and blending to form a long molecular chain or a branched chain, thereby improving the bonding force between the PBAT and the PBS interface, increasing the mechanical property of the biodegradable composite material, comprehensively improving the performance of the biodegradable composite material and expanding the application range.
3. The PBAT/PBS biodegradable composite material reinforced by the nucleating agent and the chain extender and the preparation method thereof have the advantages of simple process, easily available raw materials and high processing efficiency, and are beneficial to industrial production of biodegradable shopping bags, biodegradable mulching films, biodegradable adhesive tapes and the like.
Drawings
FIG. 1 is a recipe table for various embodiments of the present invention;
FIG. 2 is a table of material test results obtained in various embodiments of the present invention.
Detailed Description
The invention provides a PBAT/PBS biodegradable composite material reinforced by a nucleating agent and a chain extender, and a preparation method thereof, wherein the formula and the preparation industry are only the preferred embodiments of the invention, and the method and the way for realizing the technical scheme are numerous, and it should be pointed out that a plurality of improvements and modifications can be made by a person skilled in the art without departing from the principle of the invention, and the improvements and the modifications are also regarded as the protection scope of the invention. The components not explicitly described in this embodiment can be implemented by using the prior art.
Example 1:
(1) The PBAT and PBS were dried in an electrothermal thermostatted oven at 80℃for 8h.
(2) And (3) placing 70 parts of dried PBAT and 30 parts of PBS in a high-speed mixer, and mixing for 15min at room temperature of 500r/min to obtain a first mixture PBAT/PBS.
(3) Transferring the first mixture PBAT/PBS to a double screw extruder, wherein the temperature of twelve temperature areas of the double screw extruder are respectively as follows: 160 ℃,170 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃ and the screw speed of a double screw extruder is 110r/min, and after the melting, shearing, high temperature and blending actions of the double screw extruder, the extrusion water-cooling granulation is carried out, so as to prepare the PBAT/PBS biodegradable composite material with the particle size of 2+/-0.5 mm, and the PBAT/PBS biodegradable composite material is placed in an electric heating constant temperature drying oven for drying for 12 hours at 80 ℃.
(4) And (3) injecting the particles obtained by the PBAT/PBS biodegradable composite material obtained in the step (3) into standard test sample bars by using an injection molding machine, wherein the temperature of a nozzle of the injection molding machine is 180 ℃, the temperatures of three temperature areas are 180 ℃,180 ℃ and the injection molding pressure is 5MPa.
Example 2:
example 2
(1) PBAT, PBS and talc were dried in an electrothermal thermostatted oven at 80 ℃ for 8h.
(2) And (3) placing 70 parts of dried PBAT, 30 parts of PBS and 5 parts of talcum powder into a high-speed mixer, and mixing for 15min at room temperature of 500r/min to obtain a first mixture PBAT/PBS/talcum powder.
(3) Transferring the first mixture PBAT/PBS/talcum powder to a double-screw extruder, wherein the temperatures of twelve temperature areas of the double-screw extruder are respectively as follows: 160 ℃,170 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃ and the screw speed of a double screw extruder is 110r/min, and after the melting, shearing, high temperature and blending actions of the double screw extruder, the extrusion, water cooling and granulation are carried out, so as to prepare the PBAT/PBS/talcum powder biodegradable composite material with the particle size of 2+/-0.5 mm, and the PBAT/PBS/talcum powder biodegradable composite material is placed in an electric heating constant temperature drying oven for drying for 12 hours at 80 ℃.
(4) And (3) injecting the particles obtained by the PBAT/PBS/talcum powder biodegradable composite material obtained in the step (3) into standard test sample bars by using an injection molding machine, wherein the temperature of a nozzle of the injection molding machine is 180 ℃, the temperatures of three temperature areas are 180 ℃,180 ℃ and the injection molding pressure is 5MPa.
Example 3:
(1) Drying PBAT and PBS for 8h at 80deg.C in electrothermal constant temperature oven, and grinding the chain extender ADR-4468 into powder.
(2) 70 parts of dried PBAT, 30 parts of PBS and 0.7 part of ground chain extender are taken and placed in a high-speed mixer, and mixed for 15min at room temperature of 500r/min, so as to obtain a first mixture PBAT/PBS/chain extender.
(3) Transferring the first mixture PBAT/PBS/chain extender to a double-screw extruder, wherein the temperatures of twelve temperature areas of the double-screw extruder are respectively as follows: 160 ℃,170 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃ and the screw speed of a double screw extruder is 110r/min, and after the melting, shearing, high temperature and blending actions of the double screw extruder, the extrusion water-cooling granulation is carried out, so as to prepare the PBAT/PBS/chain extender biodegradable composite material with the particle size of 2+/-0.5 mm, and the PBAT/PBS/chain extender biodegradable composite material is placed in an electric heating constant temperature drying oven for drying for 12 hours at 80 ℃.
(4) And (3) injecting the particles obtained by the PBAT/PBS/chain extender biodegradable composite material obtained in the step (3) into standard test sample bars by using an injection molding machine, wherein the temperature of a nozzle of the injection molding machine is 180 ℃, the temperatures of three temperature areas are 180 ℃,180 ℃ and the injection molding pressure is 5MPa.
Example 4:
(1) Drying PBAT, PBS and pulvis Talci in an electrothermal constant temperature oven at 80deg.C for 8 hr, and grinding the chain extender ADR-4468 into powder.
(2) 70 parts of dried PBAT, 30 parts of PBS, 5 parts of talcum powder and 0.7 part of ground chain extender are taken and placed in a high-speed mixer, and mixed for 15min at room temperature of 500r/min, so that a first mixture PBAT/PBS/talcum powder/chain extender is obtained.
(3) Transferring the first mixture PBAT/PBS/talcum powder/chain extender into a double-screw extruder, wherein the temperatures of twelve temperature areas of the double-screw extruder are respectively as follows: 160 ℃,170 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃ and the screw speed of a double screw extruder is 110r/min, and after the melting, shearing, high temperature and blending actions of the double screw extruder, the extrusion water-cooling granulation is carried out, so as to prepare the PBAT/PBS/talcum powder/chain extender biodegradable composite material with the particle size of 2+/-0.5 mm, and the PBAT/PBS/talcum powder/chain extender biodegradable composite material is placed in an electrothermal constant temperature drying oven for drying for 12 hours at 80 ℃.
(4) And (3) injecting the particles obtained by the PBAT/PBS/talcum powder/chain extender biodegradable composite material obtained in the step (3) into standard test sample bars by using an injection molding machine, wherein the temperature of a nozzle of the injection molding machine is 180 ℃, the temperatures of three temperature areas are 180 ℃,180 ℃ and the injection molding pressure is 5MPa.
In the above examples and comparative examples of the present invention, the tensile strength was measured according to GB/T3682.1-2018 "determination of melt Mass Flow Rate (MFR) and melt volume flow Rate (MVR) of plastics thermoplastics".
To more intuitively illustrate the practice of the present invention, all example formulations and comparative examples are shown in FIG. 1 of the drawings and all example formulations and comparative examples are shown in FIG. 2 of the drawings.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (5)
1. The PBAT/PBS biodegradable composite material enhanced by the nucleating agent and the chain extender is characterized by comprising the following components in parts by weight:
2. a PBAT/PBS biodegradable composite reinforced with a nucleating agent, chain extender according to claim 1, wherein: the PBAT melt index (190 ℃ C., 2160 g) is about 4-6g/10min, and the melting point is 110-130 ℃.
3. A PBAT/PBS biodegradable composite reinforced with a nucleating agent, chain extender according to claim 1, wherein: the PBS melt index (190 ℃ C., 2160 g) is about 3.5-5.5g/10min, and the melting point is about 115 ℃.
4. A PBAT/PBS biodegradable composite reinforced with a nucleating agent, chain extender according to claim 1, wherein: the mesh number of the nucleating agent talcum powder is 3000 meshes.
5. The method for preparing the PBAT/PBS biodegradable composite material reinforced by the nucleating agent and the chain extender according to claim 1, which is characterized in that: the method comprises the following steps:
step (1), drying PBAT, PBS and talcum powder for 8 hours in an electrothermal constant temperature drying oven at 80 ℃;
step (2), placing the dried PBAT/PBS, PBAT/PBS/talcum powder and PBAT/PBS/ADR-4468 in a high-speed mixer, and mixing for 15min at room temperature of 500 r/min;
step (3), extruding the PBAT/PBS, PBAT/PBS/talcum powder and PBAT/PBS/ADR-4468 which are mixed by a high-speed mixer at the screw rotating speed of 110r/min by a double-screw extruder (the temperatures of a first area and a second area of the double-screw extruder are 160 ℃,170 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃,180 ℃ and 180 ℃) respectively, cooling by a water tank, granulating, preparing the PBAT/PBS blending modified biodegradable composite material with the particle size of 2+/-0.5 mm, and drying for 12h at the 80 ℃ in an electrothermal constant-temperature drying oven;
and (4) injecting the particles obtained in the step (3) into standard test sample bars by using an injection molding machine, wherein the temperature of a nozzle of the injection molding machine is 180 ℃, the temperatures of three temperature areas are 180 ℃,180 ℃ and the injection molding pressure is 5MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310277106.5A CN116731481A (en) | 2023-03-21 | 2023-03-21 | PBAT/PBS biodegradable composite material reinforced by nucleating agent and chain extender and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310277106.5A CN116731481A (en) | 2023-03-21 | 2023-03-21 | PBAT/PBS biodegradable composite material reinforced by nucleating agent and chain extender and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116731481A true CN116731481A (en) | 2023-09-12 |
Family
ID=87917575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310277106.5A Pending CN116731481A (en) | 2023-03-21 | 2023-03-21 | PBAT/PBS biodegradable composite material reinforced by nucleating agent and chain extender and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116731481A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553934A (en) * | 2018-10-25 | 2019-04-02 | 南京五瑞生物降解新材料研究院有限公司 | Using the PBS/PBAT blending and modifying Biodegradable resin and preparation method thereof of chain extender preparation |
-
2023
- 2023-03-21 CN CN202310277106.5A patent/CN116731481A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109553934A (en) * | 2018-10-25 | 2019-04-02 | 南京五瑞生物降解新材料研究院有限公司 | Using the PBS/PBAT blending and modifying Biodegradable resin and preparation method thereof of chain extender preparation |
Non-Patent Citations (3)
| Title |
|---|
| 孙静 等: "扩链剂对PBAT/Talc 复合材料性能影响研究", 《塑料科技》, vol. 8, no. 49, 25 August 2021 (2021-08-25), pages 1 - 6 * |
| 李建军 等: "《塑料配方设计（第三版）》", vol. 3, 30 September 2019, 中国轻工工业出版社, pages: 449 - 450 * |
| 陆永昌: "基于聚对苯二甲酸-己二酸-丁二醇酯生物降解塑料快递胶带基材层的设计与性能研究", 《中国优秀硕士学位论文全文数据库（工程科技Ⅰ辑）》, no. 03, 15 March 2024 (2024-03-15), pages 020 - 324 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhao et al. | Strategies and techniques for improving heat resistance and mechanical performances of poly (lactic acid)(PLA) biodegradable materials | |
| CN106519618B (en) | A kind of high-content polylactic acid film and preparation method thereof | |
| CN111995848A (en) | Degradable plastic composition and preparation method and application thereof | |
| CN102108196B (en) | Method for preparing polylactic acid degradable material | |
| CN102070880B (en) | Biodegradable resin composition and product thereof | |
| EP2700678B1 (en) | Biodegradable polymer composite material | |
| CN101205356A (en) | Polyhydroxylkanoates as well as blending modification for copolymer thereof and polylactic acid | |
| CN106674923B (en) | A kind of controllable PBAT/PLA composite membranes and preparation method thereof of degrading | |
| CN112210197A (en) | Biodegradable polylactic acid film and preparation method thereof | |
| CN102604164A (en) | Master batch capable of fully and biologically degrading plastic film and preparation method thereof | |
| CN104072957A (en) | Food grade biodegradable polylactic acid-based composite material and application thereof | |
| CN111205604B (en) | Ultrathin high-strength high-toughness biodegradable mulch film material, film, preparation method and application | |
| CN108424626A (en) | A kind of polylactic acid poly propylene carbonate composite material and preparation method | |
| CN103571158A (en) | High interfacial compatibility PLA/PBAT blend and preparation method | |
| CN114230989A (en) | Preparation method of environment-friendly biodegradable PBAT (poly (butylene adipate-co-terephthalate)) foaming material | |
| CN101054463A (en) | Preparation method of fast crystallization type polylactic acid composite material | |
| CN113956640B (en) | Biodegradable PLA film and preparation method thereof | |
| CN113956630A (en) | Completely biodegradable film and preparation method thereof | |
| CN112920567A (en) | Wheat straw filled modified PLA fully-degradable plastic and preparation method thereof | |
| CN102690506B (en) | Polylactic acid/long carbon chain nylon blend and preparation method thereof | |
| CN110079065A (en) | A kind of high tenacity PLA/PBAT blend alloy and preparation method thereof | |
| CN114573965B (en) | High-barrier biodegradable material and preparation method and application thereof | |
| CN102643523B (en) | Modified polylactic acid/polycaprolactone composite material and preparation method thereof | |
| CN102424719B (en) | Straw powder-containing modified poly lactic acid composite material and preparation method thereof | |
| CN114369339A (en) | Production technology and application of low-cost biodegradable material |
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 |