CN114149620A - Starch-based alloy environment-friendly material and preparation method thereof - Google Patents

Starch-based alloy environment-friendly material and preparation method thereof Download PDF

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CN114149620A
CN114149620A CN202110871307.9A CN202110871307A CN114149620A CN 114149620 A CN114149620 A CN 114149620A CN 202110871307 A CN202110871307 A CN 202110871307A CN 114149620 A CN114149620 A CN 114149620A
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starch
parts
plant
based alloy
rosin
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罗昊
黄卓坚
曹军
哈生强
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Ningxia Heyiyuan Biotechnology Co ltd
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    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02Starch; Degradation products thereof, e.g. dextrin
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L29/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
    • C08L29/02Homopolymers or copolymers of unsaturated alcohols
    • C08L29/04Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/04Polyesters derived from hydroxycarboxylic acids, e.g. lactones
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/06Biodegradable
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer 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
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/03Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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Abstract

The invention discloses a starch-based alloy environment-friendly material and a preparation method thereof, wherein the starch-based alloy environment-friendly material comprises the following raw materials in parts by weight: 30-60 parts of plant starch, 10-20 parts of plant straw fiber, 1-5 parts of reaction auxiliary agent, 30-60 parts of bio-based resin, 1-5 parts of nano composite material, 0.2-1 part of plasticizer, 0.5-2 parts of lubricant, 5-8 parts of silicon oxide, 8-12 parts of chitosan and 6-10 parts of rosin derivative. The preparation method comprises the following steps: adding plant starch into a dry-process reactor, and adding a reaction auxiliary agent to obtain modified starch; putting plant starch into a dry reactor to obtain dry plant straw fiber; putting modified starch and dry plant straw fiber into a blender, adding bio-based resin, and then adding a nano composite material, a plasticizer, a lubricant, silicon oxide, chitosan and a rosin derivative to obtain powder; and adding the powder into a double-screw machine, cooling the extruded material, and then melting and granulating in a granulator. The starch-based alloy environment-friendly material obtained by the invention is low in petroleum-based plastic proportion, energy-saving and environment-friendly.

Description

Starch-based alloy environment-friendly material and preparation method thereof
Technical Field
The invention relates to the technical field of modification of environment-friendly materials, in particular to a starch-based alloy environment-friendly material and a preparation method thereof.
Background
The plant starch and the plant straw fiber belong to natural biological high polymer materials, and have the characteristics of complete degradation, rich sources, low price and the like. In the application of the bio-based high polymer material, the starch is usually used as a filler, so that the production cost is greatly reduced, and the biodegradation performance of the material is improved.
However, the plant starch and the plant straw fiber have polyhydroxy structures, so that the starch is poor in compatibility with other synthetic resins, and the application of the starch in biodegradable materials is limited; in addition, the mechanical property, thermal stability, flame retardant property, conductivity and the like of the produced degradable material can not meet the application of wider range of daily necessities and industrial products.
The existing starch-based alloy modified materials are all processed alloy materials after starch, plastic resin (environment-friendly resin), various modification aids and the like are directly mixed or filled and modified, and because the filled various modified resins and filling materials are influenced by the production and processing technology and have performance defects of the filling materials, the performance of the produced alloy materials is restricted in application.
Disclosure of Invention
In order to solve the technical problems, the invention provides the starch-based alloy environment-friendly material and the preparation method thereof, the starch-based alloy material has low proportion of petroleum-based plastics used by the composite material, the use of the petroleum-based plastics is effectively reduced, and the starch-based alloy environment-friendly material is energy-saving and environment-friendly; the introduction of the nano composite material changes the physical properties of the plant starch, the plant straw fiber and the bio-based resin, and improves the material properties such as mechanical property, flame retardant property, processing stability and the like of the material; the chitosan is introduced to increase the biodegradability, so that the energy is saved and the environment is protected; the rosin derivatives are introduced to improve the moisture-proof and bacteriostatic properties of the alloy material.
The invention is realized by the following technical scheme:
the starch-based alloy environment-friendly material comprises the following raw materials in parts by weight: 30-60 parts of plant starch, 10-20 parts of plant straw fiber, 1-5 parts of reaction auxiliary agent, 30-60 parts of bio-based resin, 1-5 parts of nano composite material, 0.2-1 part of plasticizer, 0.5-2 parts of lubricant, 5-8 parts of silicon oxide, 8-12 parts of chitosan and 6-10 parts of rosin derivative.
Further, the weight fraction ratio of the plant starch to the plant straw fiber is 3: 1; the weight fraction ratio of the plant starch to the bio-based resin is 1:1.
Further, the plant starch is one or more of 100-800-mesh corn starch, cassava starch, potato starch, wheat starch, glutinous rice starch and transgenic corn starch; the plant straw fiber is one or more of 100-mesh and 300-mesh rice straw, wheat straw and corn straw.
Further, the reaction auxiliary agent comprises a mixture of an initiator, maleic anhydride and stearic acid, and also comprises one or more of a coupling agent, glyceryl monostearate, vinyl acetate and acrylic acid.
Further, the initiator is one or more of potassium persulfate, lauroyl peroxide, sodium bisulfite, sucrose and benzoyl peroxide; the coupling agent is one or more of titanate coupling agent, silane coupling agent, phosphate coupling agent and zirconate coupling agent.
Further, the bio-based resin is one or more of polylactic acid, polybutylene succinate, polycaprolactone, polyhydroxyalkanoate, a carbon dioxide copolymer, polyvinyl alcohol, polyhydroxyalkanoate and polyhydroxybutyrate.
Further, the nanocomposite includes graphene and nanoscale inorganic material; the graphene is graphene oxide; the nano inorganic matter is one or more of 3000-5000 mesh calcium sulfate whisker, 3000-5000 mesh nano white carbon black, 5000-6000 mesh nano silicon dioxide and 3000-5000 mesh nano montmorillonite.
Further, the plasticizer is one or more of peroxide epoxidized soybean oil, isosorbide diester, acetyl tributyl citrate and epoxy stearate octyl ester; the lubricant is one or more of silicone oil, zinc stearate, calcium stearate, polyethylene wax, butyl stearate and paraffin; the rosin derivative is one or more of lime rosin, glycerin rosin, rosin anhydride and rosin alcohol.
Further, the rosin derivative is rosin anhydride, the rosin anhydride is obtained by mixing and reacting rosin and acetic anhydride according to the weight ratio of 1:1.2, the reaction temperature is 245-.
The invention relates to a preparation method of a starch-based alloy environment-friendly material, which comprises the following steps:
1) modification treatment: putting plant starch into a dry-process reactor at the temperature of 88-92 ℃, adding a reaction auxiliary agent, and reacting for 1-2 hours to obtain modified starch; putting the plant straw fiber into a dryer with the temperature of 105-110 ℃ for drying for 2-3 hours to obtain the dried plant straw fiber with the water content of less than 3%;
2) blending: putting the modified starch obtained in the step 1) and the dry plant straw fiber into a blender, adding the bio-based resin, keeping the temperature at 60-70 ℃, stirring at the speed of 150-;
3) and (3) granulation: adding the powder in the step 2) into a parallel co-rotating twin-screw machine, cooling the extruded material, and then melting and granulating in a granulator, wherein the length-diameter ratio of screws of the parallel co-rotating twin-screw machine is greater than or equal to 52:1, the parameters of the granulator are set to be 170 ℃ at the temperature of 150-.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the starch-based alloy environment-friendly material provided by the invention can be used for producing high-quality plastic products, and the proportion of petroleum-based plastics used by the environment-friendly material is low, so that the use of petroleum-based plastics is effectively reduced, and the environment is protected;
2. the invention changes the physical properties of plant starch, plant straw fiber and bio-based resin by introducing the nano composite material, and improves the technical problems of material properties such as mechanical property, flame retardant property, processing stability and the like of the material;
3. compared with the traditional industrial plastic material and plastic products, the starch-based alloy environment-friendly material prepared by the invention has wide application, excellent mechanical property, environment friendliness and degradability, can be applied to various processing technologies such as injection molding, film blowing, pipe extrusion, section bar extrusion and the like, and can adjust and control the degradation period according to the technical parameters of the produced products;
4. the starch-based alloy environment-friendly material prepared by the invention introduces chitosan, the chitosan is a product of natural polysaccharide chitin with partial acetyl removed, and the starch-based alloy environment-friendly material has multiple physiological functions of biodegradability, biocompatibility, nontoxicity, bacteriostasis, cancer resistance, lipid reduction, immunity enhancement and the like, increases the biodegradability of the starch-based alloy environment-friendly material, and is nontoxic and bacteriostatic;
5. the starch-based alloy environment-friendly material prepared by the invention introduces rosin derivatives, has excellent characteristics of moisture resistance, bacteriostasis and the like, and increases the moisture resistance and bacteriostasis performance of the starch-based alloy environment-friendly material.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are only a few specific examples of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by the design concept should fall within the scope of infringing on the protection scope of the present invention.
The invention relates to a preparation method of a starch-based alloy environment-friendly material, which comprises the following steps:
1) modification treatment: putting plant starch into a dry-process reactor at the temperature of 88-92 ℃, adding a reaction auxiliary agent, and reacting for 1-2 hours to obtain modified starch; putting the plant straw fiber into a dryer with the temperature of 105-110 ℃ for drying for 2-3 hours to obtain the dried plant straw fiber with the water content of less than 3%;
2) blending: putting the modified starch obtained in the step 1) and the dry plant straw fiber into a blender, adding the bio-based resin, keeping the temperature at 60-70 ℃, stirring at the speed of 150-;
3) and (3) granulation: adding the powder in the step 2) into a parallel co-rotating twin-screw machine, cooling the extruded material, and then melting and granulating in a granulator, wherein the length-diameter ratio of screws of the parallel co-rotating twin-screw machine is greater than or equal to 52:1, the parameters of the granulator are set to be 170 ℃ at the temperature of 150-.
The starch-based alloy environment-friendly material granules are obtained by the preparation method, and the granules are added into an injection molding machine to obtain various tableware and daily plastic products; adding the granules into a film blowing machine to prepare a mulching film and a package; adding the granules into other forming machines to prepare plastic pipes, plastic pipe fittings and the like.
The starch-based alloy environment-friendly material adopted by the preparation method has various implementation modes according to components and formulas, and the examples are as follows:
example 1
The starch-based alloy environment-friendly material comprises the following raw materials in parts by weight: 30 parts of plant starch, 10 parts of plant straw fiber, 1 part of reaction auxiliary agent, 30 parts of bio-based resin, 1 part of nano composite material, 0.2 part of plasticizer, 0.5 part of lubricant, 5 parts of silicon oxide, 8 parts of chitosan and 6 parts of rosin derivative.
More specifically, the plant starch is one or more of 100-800-mesh corn starch, cassava starch, potato starch, wheat starch, glutinous rice starch and transgenic corn starch; the plant straw fiber is one or more of 100-mesh and 300-mesh rice straw, wheat straw and corn straw.
More specifically, the reaction auxiliary agent comprises a mixture of an initiator, maleic anhydride and stearic acid, and further comprises one or more of a coupling agent, glyceryl monostearate, vinyl acetate and acrylic acid.
More specifically, the initiator is one or more of potassium persulfate, lauroyl peroxide, sodium bisulfite, sucrose and benzoyl peroxide; the coupling agent is one or more of titanate coupling agent, silane coupling agent, phosphate coupling agent and zirconate coupling agent.
More specifically, the bio-based resin is one or more of polylactic acid, polybutylene succinate, polycaprolactone, polyhydroxyalkanoate, a carbon dioxide copolymer, polyvinyl alcohol, polyhydroxyalkanoate and polyhydroxybutyrate.
More specifically, the nanocomposite includes graphene and nanoscale inorganic materials; the graphene is graphene oxide; the nano inorganic matter is one or more of 3000-5000 mesh calcium sulfate whisker, 3000-5000 mesh nano white carbon black, 5000-6000 mesh nano silicon dioxide and 3000-5000 mesh nano montmorillonite.
More specifically, the plasticizer is one or more of peroxide epoxidized soybean oil, isosorbide diester, acetyl tributyl citrate and epoxy stearate octyl ester; the lubricant is one or more of silicone oil, zinc stearate, calcium stearate, polyethylene wax, butyl stearate and paraffin; the rosin derivative is one or more of lime rosin, glycerin rosin, rosin anhydride and rosin alcohol.
More specifically, the rosin derivative is rosin anhydride, the rosin anhydride is obtained by mixing and reacting rosin and acetic anhydride according to the weight ratio of 1:1.2, the reaction temperature is 245-.
Example 2
The starch-based alloy environment-friendly material comprises the following raw materials in parts by weight: 60 parts of plant starch, 20 parts of plant straw fiber, 5 parts of reaction auxiliary agent, 60 parts of bio-based resin, 5 parts of nano composite material, 1 part of plasticizer, 2 parts of lubricant, 8 parts of silicon oxide, 12 parts of chitosan and 10 parts of rosin derivative.
More specifically, the plant starch is one or more of 100-800-mesh corn starch, cassava starch, potato starch, wheat starch, glutinous rice starch and transgenic corn starch; the plant straw fiber is one or more of 100-mesh and 300-mesh rice straw, wheat straw and corn straw.
More specifically, the reaction auxiliary agent comprises a mixture of an initiator, maleic anhydride and stearic acid, and further comprises one or more of a coupling agent, glyceryl monostearate, vinyl acetate and acrylic acid.
More specifically, the initiator is one or more of potassium persulfate, lauroyl peroxide, sodium bisulfite, sucrose and benzoyl peroxide; the coupling agent is one or more of titanate coupling agent, silane coupling agent, phosphate coupling agent and zirconate coupling agent.
More specifically, the bio-based resin is one or more of polylactic acid, polybutylene succinate, polycaprolactone, polyhydroxyalkanoate, a carbon dioxide copolymer, polyvinyl alcohol, polyhydroxyalkanoate and polyhydroxybutyrate.
More specifically, the nanocomposite includes graphene and nanoscale inorganic materials; the graphene is graphene oxide; the nano inorganic matter is one or more of 3000-5000 mesh calcium sulfate whisker, 3000-5000 mesh nano white carbon black, 5000-6000 mesh nano silicon dioxide and 3000-5000 mesh nano montmorillonite.
More specifically, the plasticizer is one or more of peroxide epoxidized soybean oil, isosorbide diester, acetyl tributyl citrate and epoxy stearate octyl ester; the lubricant is one or more of silicone oil, zinc stearate, calcium stearate, polyethylene wax, butyl stearate and paraffin; the rosin derivative is one or more of lime rosin, glycerin rosin, rosin anhydride and rosin alcohol.
More specifically, the rosin derivative is rosin anhydride, the rosin anhydride is obtained by mixing and reacting rosin and acetic anhydride according to the weight ratio of 1:1.2, the reaction temperature is 245-.
Example 3
The starch-based alloy environment-friendly material comprises the following raw materials in parts by weight: 45 parts of plant starch, 15 parts of plant straw fiber, 2.5 parts of reaction auxiliary agent, 45 parts of bio-based resin, 2.5 parts of nano composite material, 0.5 part of plasticizer, 1 part of lubricant, 6.5 parts of silicon oxide, 10 parts of chitosan and 8 parts of rosin derivative.
More specifically, the plant starch is one or more of 100-800-mesh corn starch, cassava starch, potato starch, wheat starch, glutinous rice starch and transgenic corn starch; the plant straw fiber is one or more of 100-mesh and 300-mesh rice straw, wheat straw and corn straw.
More specifically, the reaction auxiliary agent comprises a mixture of an initiator, maleic anhydride and stearic acid, and further comprises one or more of a coupling agent, glyceryl monostearate, vinyl acetate and acrylic acid.
More specifically, the initiator is one or more of potassium persulfate, lauroyl peroxide, sodium bisulfite, sucrose and benzoyl peroxide; the coupling agent is one or more of titanate coupling agent, silane coupling agent, phosphate coupling agent and zirconate coupling agent.
More specifically, the bio-based resin is one or more of polylactic acid, polybutylene succinate, polycaprolactone, polyhydroxyalkanoate, a carbon dioxide copolymer, polyvinyl alcohol, polyhydroxyalkanoate and polyhydroxybutyrate.
More specifically, the nanocomposite includes graphene and nanoscale inorganic materials; the graphene is graphene oxide; the nano inorganic matter is one or more of 3000-5000 mesh calcium sulfate whisker, 3000-5000 mesh nano white carbon black, 5000-6000 mesh nano silicon dioxide and 3000-5000 mesh nano montmorillonite.
More specifically, the plasticizer is one or more of peroxide epoxidized soybean oil, isosorbide diester, acetyl tributyl citrate and epoxy stearate octyl ester; the lubricant is one or more of silicone oil, zinc stearate, calcium stearate, polyethylene wax, butyl stearate and paraffin; the rosin derivative is one or more of lime rosin, glycerin rosin, rosin anhydride and rosin alcohol.
More specifically, the rosin derivative is rosin anhydride, the rosin anhydride is obtained by mixing and reacting rosin and acetic anhydride according to the weight ratio of 1:1.2, the reaction temperature is 245-.
The starch-based alloy material has the advantages that the proportion of petroleum-based plastics used by the composite material is low, the use of petroleum-based plastics is effectively reduced, and the starch-based alloy material is energy-saving and environment-friendly; the introduction of the nano composite material changes the physical properties of the plant starch, the plant straw fiber and the bio-based resin, and improves the material properties such as mechanical property, flame retardant property, processing stability and the like of the material; the chitosan and rosin derivatives are introduced, so that the moisture resistance and the antibacterial performance of the alloy material are improved, and the biodegradability is increased.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (10)

1. The starch-based alloy environment-friendly material is characterized by comprising the following raw materials in parts by weight: 30-60 parts of plant starch, 10-20 parts of plant straw fiber, 1-5 parts of reaction auxiliary agent, 30-60 parts of bio-based resin, 1-5 parts of nano composite material, 0.2-1 part of plasticizer, 0.5-2 parts of lubricant, 5-8 parts of silicon oxide, 8-12 parts of chitosan and 6-10 parts of rosin derivative.
2. The starch-based alloy environment-friendly material as claimed in claim 1, wherein the weight fraction ratio of the plant starch to the plant straw fiber is 3: 1; the weight fraction ratio of the plant starch to the bio-based resin is 1:1.
3. The starch-based alloy environment-friendly material as claimed in claim 1 or 2, wherein the plant starch is one or more of 100-800 mesh corn starch, tapioca starch, potato starch, wheat starch, glutinous rice starch and transgenic corn starch; the plant straw fiber is one or more of 100-mesh and 300-mesh rice straw, wheat straw and corn straw.
4. The starch-based alloy environment-friendly material as claimed in claim 1 or 2, wherein the reaction auxiliary agent comprises a mixture of an initiator, maleic anhydride and stearic acid, and further comprises one or more of a coupling agent, glyceryl monostearate, vinyl acetate and acrylic acid.
5. The starch-based alloy environment-friendly material as claimed in claim 4, wherein the initiator is one or more of potassium persulfate, lauroyl peroxide, sodium bisulfite, sucrose and benzoyl peroxide; the coupling agent is one or more of titanate coupling agent, silane coupling agent, phosphate coupling agent and zirconate coupling agent.
6. The starch-based alloy environment-friendly material as claimed in claim 1 or 2, wherein the bio-based resin is one or more of polylactic acid, polybutylene succinate, polycaprolactone, polyhydroxyalkanoate, carbon dioxide copolymer, polyvinyl alcohol, polyhydroxyalkanoate and polyhydroxybutyrate.
7. The starch-based alloy environment-friendly material as claimed in claim 1 or 2, wherein the nanocomposite comprises graphene and nanoscale inorganic material; the graphene is graphene oxide; the nano inorganic matter is one or more of 3000-5000 mesh calcium sulfate whisker, 3000-5000 mesh nano white carbon black, 5000-6000 mesh nano silicon dioxide and 3000-5000 mesh nano montmorillonite.
8. The starch-based alloy environment-friendly material as claimed in claim 1 or 2, wherein the plasticizer is one or more of peroxide epoxidized soybean oil, isosorbide diester, acetyl tributyl citrate and epoxy stearate octyl ester; the lubricant is one or more of silicone oil, zinc stearate, calcium stearate, polyethylene wax, butyl stearate and paraffin; the rosin derivative is one or more of lime rosin, glycerin rosin, rosin anhydride and rosin alcohol.
9. The starch-based alloy environment-friendly material as claimed in claim 1 or 2, wherein the rosin derivative is rosin acid anhydride, the rosin acid anhydride is obtained by mixing and reacting rosin and acetic anhydride according to a weight ratio of 1:1.2, the reaction temperature is 245-.
10. The method for preparing the environment-friendly material according to claim 1, wherein the method comprises the following steps: the method comprises the following steps:
1) modification treatment: putting plant starch into a dry-process reactor at the temperature of 88-92 ℃, adding a reaction auxiliary agent, and reacting for 1-2 hours to obtain modified starch; putting the plant straw fiber into a dryer with the temperature of 105-110 ℃ for drying for 2-3 hours to obtain the dried plant straw fiber with the water content of less than 3%;
2) blending: putting the modified starch obtained in the step 1) and the dry plant straw fiber into a blender, adding the bio-based resin, keeping the temperature at 60-70 ℃, stirring at the speed of 150-;
3) and (3) granulation: adding the powder in the step 2) into a parallel co-rotating twin-screw machine, cooling the extruded material, and then melting and granulating in a granulator, wherein the length-diameter ratio of screws of the parallel co-rotating twin-screw machine is greater than or equal to 52:1, the parameters of the granulator are set to be 170 ℃ at the temperature of 150-.
CN202110871307.9A 2021-07-30 2021-07-30 Starch-based alloy environment-friendly material and preparation method thereof Pending CN114149620A (en)

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CN112391043A (en) * 2020-11-25 2021-02-23 宁夏禾易源生物科技有限公司 Starch-based alloy environment-friendly material and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
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CN115073897A (en) * 2022-07-28 2022-09-20 苏州市远瑞包装有限公司 Degradable plastic packaging material and preparation process thereof
CN115073897B (en) * 2022-07-28 2024-02-27 苏州市远瑞包装有限公司 Degradable plastic packaging material and preparation process thereof

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Application publication date: 20220308