CN116218175A - Cellulose degradation material and preparation method thereof - Google Patents
Cellulose degradation material and preparation method thereof Download PDFInfo
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- CN116218175A CN116218175A CN202310268877.8A CN202310268877A CN116218175A CN 116218175 A CN116218175 A CN 116218175A CN 202310268877 A CN202310268877 A CN 202310268877A CN 116218175 A CN116218175 A CN 116218175A
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- 238000000071 blow moulding Methods 0.000 claims abstract description 100
- 239000002994 raw material Substances 0.000 claims abstract description 99
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/24—Crystallisation aids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of cellulose full-biodegradation blow molding materials and preparation thereof, in particular to a cellulose degradation material and a preparation method thereof, aiming at the problems of lower water resistance, poorer temperature resistance and lower sanitary standard reaching rate and degradation rate of the prepared material caused by the traditional processing mode in the existing cellulose full-biodegradation blow molding materials and preparation technology thereof, the invention provides the following scheme, wherein one cellulose degradation material comprises the following raw materials in parts by weight: the invention aims to improve the degradation rate of the material by changing the raw material formula, improve the water resistance and the temperature resistance of the material by adding clean pollution-free and efficient auxiliary agents, improve the use effect of the cellulose full-biodegradation blow molding material and avoid the problem that the prepared material does not reach the standard due to sanitary reasons.
Description
Technical Field
The invention relates to the technical field of cellulose full-biodegradation blow molding materials and preparation thereof, in particular to a cellulose degradation material and a preparation method thereof.
Background
The development of low-carbon economy is becoming a world trend, and the development of low-carbon industry is taken as a fundamental way for protecting global climate and promoting the development of domestic economy, and is becoming more and more concerned by researchers at home and abroad. Meanwhile, under the situation that the global petroleum resource supply is increasingly tense and the environmental protection problem caused by synthetic plastics taking petroleum as a raw material is increasingly prominent, the market demand of the biological plastics is rapidly increased, and the biological degradable plastics taking plants as the raw material are paid attention as new materials which are helpful for relieving the shortage of petroleum resources and developing low-carbon economy. Biodegradable plastics refer to a class of plastics that are degraded by the action of microorganisms present in nature. The ideal biodegradable plastic is a polymer material which has excellent usability, can be completely decomposed by environmental microorganisms after being abandoned, and finally becomes an integral part of carbon circulation in the nature by being inorganic. Biodegradable plastics can be classified into destructive biodegradable plastics and complete biodegradable plastics, the former mainly refers to blending starch with non-degradable resin, and is the first generation product of starch-based degradable plastics research. The latter includes starch and degradable polyester blend material and full starch (or cellulose, chitin) plastic, which can be thoroughly degraded after use, and is the main trend of developing biological degradation materials at home and abroad. However, in consideration of grain safety and limitation of land resources, the development space of the biodegradable plastic taking corn starch as a main raw material is limited, and the natural cellulose of non-grain crops has great potential for preparing the bioplastic. The natural cellulose is taken as a green renewable high molecular resource widely existing in the nature, is mainly applied to industries such as food, building materials, paint and the like at present, and still belongs to a primary product. If biomass resources natural cellulose can be utilized, the biological material produced through the industrial biotechnology process replaces three large synthetic polymer organic carbon materials used in China every year, so that the production cost can be greatly reduced, and the carbon dioxide emission can be effectively controlled.
However, the existing cellulose full-biodegradable blow molding material and the preparation technology thereof still have the problems of low water resistance, poor temperature resistance and low sanitary standard reaching rate and degradation rate of the prepared material due to the traditional processing mode, so that a cellulose degradable material and the preparation method thereof are provided for solving the problems.
Disclosure of Invention
The invention aims to solve the problems that the existing cellulose full-biodegradation blow molding material and the preparation technology thereof still have lower water resistance and poorer temperature resistance, and the traditional processing mode leads to lower sanitary standard reaching rate and degradation rate of the prepared material, and the like.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the cellulose degradation material comprises the following raw materials in parts by weight: the material comprises the following raw materials in parts by weight: 40-60 parts of polylactic acid, 25-35 parts of plant slurry, 10-30 parts of starch plastic, 15-25 parts of polyhydroxyalkanoate polymer, 1-11 parts of TEMPO catalyst, 3-12 parts of compatilizer, 5-15 parts of nucleating agent, 3-18 parts of hydrolysis-resistant stabilizer and 0-13 parts of reinforcing agent;
preferably, the material comprises the following raw materials in parts by weight: 40-50 parts of polylactic acid, 25-30 parts of plant slurry, 10-20 parts of starch plastic, 15-20 parts of polyhydroxyalkanoate polymer, 1-10 parts of TEMPO catalyst, 4-12 parts of compatilizer, 5-11 parts of nucleating agent, 3-13 parts of hydrolysis-resistant stabilizer and 3-13 parts of reinforcing agent;
The preparation method comprises the following steps:
s1: material acquisition: raw material acquisition is performed by professionals;
s2: and (3) performing treatment: processing the obtained raw materials by professionals;
s3: the preparation is carried out: preparing the cellulose full-biodegradable blow molding material by extrusion blow molding of the treated raw materials by professionals;
s4: the test was performed: testing the prepared cellulose full-biodegradable blow molding material by professionals;
preferably, in the step S1, raw materials are obtained by a professional, wherein the raw materials include polylactic acid, plant slurry, starch plastic, polyhydroxyalkanoate polymer, compatilizer, nucleating agent, hydrolysis-resistant stabilizer and reinforcing agent when the raw materials are obtained, talcum powder is adopted as the nucleating agent, carbodiimide type hydrolysis-resistant stabilizer is adopted as the hydrolysis-resistant stabilizer, acrylic ester melt reinforcing agent is adopted as the reinforcing agent, the raw materials are pretreated by the professional after the raw materials are obtained, the obtained plant slurry is dissolved in eutectic solution by the professional by adopting a heat collection type constant temperature heating magnetic stirrer when the pretreatment is carried out, and the solid-liquid ratio is 1 when the dissolution is carried out: 15-35, wherein the temperature condition of the heat-collecting constant-temperature heating magnetic stirrer is constant at 70-160 ℃, the rotating speed is kept at 300-1800r/min and the constant-speed rotation is carried out, the dissolving time is 30-60min, the prepared plant dissolved cellulose is subjected to vacuum suction filtration by a professional after the dissolving is finished, the plant dissolved cellulose subjected to vacuum suction filtration is washed to be neutral by deionized water, the plant dissolved cellulose is obtained after the washing is finished, a TEMPO catalyst is added into the obtained plant dissolved cellulose by the professional after the drying is finished, the stirring is carried out for 2.5h, the plant dissolved cellulose is decomposed by the professional through reaction and stirring to obtain plant nano cellulose with the diameter of 3-6nm, wherein the rotating speed of the stirrer is 2000-10000r/min when the stirring is carried out, the stirring time is 30min, the prepared plant nano cellulose is collected by the professional after the stirring is finished, and the collected plant nano cellulose is subjected to vacuum storage;
Preferably, in the step S2, the obtained raw materials are processed by a professional, wherein the raw materials are weighed by the professional according to a proportion during the processing, and the weighed raw materials are put into a stirrer for stirring, wherein the rotation speed of the stirrer is 280r/min during the stirring, the stirring time is 35min, and the mixture formed after the stirring is sampled and detected by the professional after the stirring is completed, wherein the sampling volume during the sampling and detecting: the total volume of stirring was 1:999, judging by a professional through a sampling detection result, processing through the judgment result, wherein the sampling detection result shows that all raw material components are contained in a sampling sample, and each component proportion accords with a weighing proportion, judging that stirring is completed by other sampling detection results, stopping stirring when stirring is completed, collecting a mixture formed after stirring by the professional, adding the extracted raw material components and the corresponding component proportion by the professional through the sampling detection result when stirring is completed, carrying out secondary stirring, carrying out sampling detection by the professional after secondary stirring is completed, judging and processing through the sampling detection result until the sampling detection result shows that all raw material components are contained in the sampling sample, and each component proportion accords with the weighing proportion, stopping stirring, and collecting the mixture formed after stirring by the professional, wherein the weighing proportion of the raw material is polylactic acid when weighing: plant nanocellulose: starch plastic: polyhydroxyalkanoate-based polymer: and (3) a compatilizer: nucleating agent: hydrolysis-resistant stabilizer: the reinforcing agent is 6:5:4:3:1:2:2:1, a step of;
Preferably, in the step S3, a professional prepares a cellulose full-biodegradable blow molding material by extrusion blow molding, wherein the professional firstly adds the collected mixture into an extruder to perform heating treatment to obtain a molten liquid, the heating treatment process temperature is kept at 55-75 ℃ for 30-50min, the obtained molten liquid is pumped into a machine head through the extruder after heating is finished, and extrusion treatment is performed according to a preset program, wherein a parison with preset thickness and diameter is extruded through a tubular machine head in preset time during extrusion treatment, and is hung in a cavity of a pre-separated blow mold arranged right below the machine head, and when the hanging parison reaches a preset length, the professional closes two half molds for blow molding, cuts off the parison by using closing force of the mold and clamps the parison between the two half molds, blow molding is performed after cutting off, wherein the blow molding is performed by inserting blow molding from one end of the parison, the central axes of a process blow pipe, the parison and a blow molding cavity are the same, and the compressed air is injected into a split mold cavity, and the shape of the blow molding cavity is formed by using compressed air to be consistent with the shape of the blow molding cavity of the full-biodegradable blow molding material;
Preferably, in the step S4, the prepared cellulose full-biodegradation blow molding material is tested by a professional, wherein the professional firstly performs use simulation on the prepared cellulose full-biodegradation blow molding material through material use, removes a part of the used cellulose full-biodegradation blow molding material, buries the prepared cellulose full-biodegradation blow molding material into forests, soil and sludge compost by adopting a soil burying method, simultaneously takes out the rest of the used cellulose full-biodegradation blow molding material, performs biodegradation by adopting microorganism groups immersed in rivers and seawater, and performs data comparison, wherein the degradation period is 6 months, the professional detects the cellulose full-biodegradation blow molding material after the degradation is completed, records mass loss and various performance degradation of the cellulose full-biodegradation blow molding material, performs analysis through mass loss, microscopic observation, physical property degradation and a relative molecular mass method, calculates the degradation rate of the cellulose full-biodegradation blow molding material through analysis results, and simultaneously obtains the degradation rate of the conventional cellulose full-biodegradation blow molding material by the professional, and performs data comparison.
Compared with the prior art, the invention has the beneficial effects that:
The degradation rate of the material is improved by changing the formula of the raw materials, and the water resistance and the temperature resistance of the material are improved by adding clean pollution-free and efficient auxiliary agents, so that the use effect of the cellulose full-biodegradation blow molding material is improved, and the problem that the prepared material does not reach the standard due to sanitary reasons is avoided.
The invention aims to improve the degradation rate of the material by changing the formula of the raw materials, improve the water resistance and the temperature resistance of the material by adding clean pollution-free and efficient auxiliary agents, improve the use effect of the cellulose full-biodegradation blow molding material and avoid the problem that the prepared material does not reach the standard due to sanitary reasons.
Drawings
Fig. 1 is a flowchart of a cellulose degradation material and a preparation method thereof according to the present invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.
Example 1
Referring to fig. 1, a cellulose degradation material comprises the following raw materials in parts by weight: 45 parts of polylactic acid, 28 parts of plant slurry, 15 parts of starch plastic, 18 parts of polyhydroxyalkanoate polymer, 5 parts of TEMPO catalyst, 8 parts of compatilizer, 7 parts of nucleating agent, 6 parts of hydrolysis resistance stabilizer and 6 parts of reinforcing agent;
The preparation method comprises the following steps:
s1: material acquisition: raw material acquisition is carried out by professionals, wherein the raw material comprises polylactic acid, plant slurry, starch plastic, polyhydroxyalkanoate polymer, compatilizer, nucleating agent, hydrolysis-resistant stabilizer and reinforcing agent when the raw material is acquired, talcum powder is adopted as the nucleating agent, carbodiimide type hydrolysis-resistant stabilizer is adopted as the reinforcing agent, acrylic ester melt reinforcing agent is adopted as the reinforcing agent, the raw material acquired by the professionals is pretreated after the raw material acquisition is completed, the professionals adopt a heat collection type constant temperature heating magnetic stirrer to dissolve the acquired plant slurry in eutectic solution when the pretreatment is carried out, and the solid-liquid ratio is 1 when the solution is carried out: 25, the temperature condition of the heat-collecting constant-temperature heating magnetic stirrer is constant at 120 ℃, the rotating speed is kept at 900r/min and rotates at a constant speed, the dissolving time is 40min, the prepared plant dissolved cellulose is subjected to vacuum suction filtration by a professional after the dissolving is finished, the plant dissolved cellulose subjected to vacuum suction filtration is washed to be neutral by deionized water, the plant dissolved cellulose is obtained after the washing is finished, a TEMPO catalyst is added into the obtained plant dissolved cellulose by the professional after the drying is finished, the plant dissolved cellulose is stirred for 2.5h, the plant dissolved cellulose is decomposed by the reaction and stirring to obtain plant nano cellulose with the diameter of 3-6nm, wherein the rotating speed of the stirrer is 6000r/min when the stirring is carried out and the stirring time is 30min, the prepared plant nano cellulose is collected by the professional after the stirring is finished, and the collected plant nano cellulose is subjected to vacuum storage;
S2: and (3) performing treatment: the obtained raw materials are processed by a professional, wherein the raw materials are weighed by the professional according to a proportion during the processing, the weighed raw materials are put into a stirrer for stirring, the rotating speed of the stirrer during the stirring is 280r/min, the primary stirring time is 35min, and the mixture formed after the stirring is sampled and detected by the professional after the primary stirring is finished, wherein the sampling volume during the sampling and detecting: the total volume of stirring was 1:999, judging by a professional through a sampling detection result, processing through the judgment result, wherein the sampling detection result shows that all raw material components are contained in a sampling sample, and each component proportion accords with a weighing proportion, judging that stirring is completed by other sampling detection results, stopping stirring when stirring is completed, collecting a mixture formed after stirring by the professional, adding the extracted raw material components and the corresponding component proportion by the professional through the sampling detection result when stirring is completed, carrying out secondary stirring, carrying out sampling detection by the professional after secondary stirring is completed, judging and processing through the sampling detection result until the sampling detection result shows that all raw material components are contained in the sampling sample, and each component proportion accords with the weighing proportion, stopping stirring, and collecting the mixture formed after stirring by the professional, wherein the weighing proportion of the raw material is polylactic acid when weighing: plant nanocellulose: starch plastic: polyhydroxyalkanoate-based polymer: and (3) a compatilizer: nucleating agent: hydrolysis-resistant stabilizer: the reinforcing agent is 6:5:4:3:1:2:2:1, a step of;
S3: the preparation is carried out: preparing a cellulose full-biodegradable blow molding material by extrusion blow molding of a processed raw material by a professional, wherein the preparation is performed by adding the collected mixture into an extruder by the professional to perform heating treatment to obtain a molten liquid, the heating process temperature is kept at 65 ℃, the heating time is 40min, the obtained molten liquid is pumped into a machine head through the extruder after heating is finished, and extrusion treatment is performed according to a preset program, wherein a parison with preset thickness and diameter is extruded through a tubular machine head in the preset time during extrusion treatment, and is hung in a cavity of a blow mold which is arranged right below the machine head and is separated in advance, and when the hanging parison reaches a preset length, two half molds for blow molding are closed by the professional, and the parison is cut off and clamped between the two half molds by utilizing the closing force of the molds, blow molding is performed after cutting off, wherein a blow head is required to be inserted from one end of the parison, the central axes of a process blow pipe, the parison and a blow molding cavity are the same, a compressed air is injected into the parison through the blow head on a parting surface of the mold, and the shape of the parison is formed into a full-biodegradable fiber material which is consistent with the shape of the blow molding cavity by utilizing the compressed air force;
S4: the test was performed: and (3) carrying out experiments on the prepared cellulose full-biodegradation blow molding material by a professional, wherein the professional firstly carries out use simulation on the prepared cellulose full-biodegradation blow molding material through material application, removes a part of the used cellulose full-biodegradation blow molding material, adopts a soil burying method to be buried in forests, soil and sludge compost, simultaneously takes out the rest of the used cellulose full-biodegradation blow molding material, adopts a mode of immersing the rest of the used cellulose full-biodegradation blow molding material in rivers and seawater, carries out biodegradation through utilizing microbiota in natural environment, wherein the degradation period is 6 months, detects the cellulose full-biodegradation blow molding material by the professional after the degradation is finished, records the quality loss and various performance degradation of the cellulose full-biodegradation blow molding material, carries out analysis through quality loss, microscopic observation and physical property degradation and a relative molecular mass method, calculates the degradation rate of the cellulose full-biodegradation blow molding material through analysis results, and simultaneously obtains the degradation rate of the existing cellulose full-biodegradation blow molding material through the professional, and carries out data comparison.
Example two
Referring to fig. 1, a cellulose degradation material comprises the following raw materials in parts by weight: 40 parts of polylactic acid, 25 parts of plant slurry, 10 parts of starch plastic, 15 parts of polyhydroxyalkanoate polymer, 4 parts of TEMPO catalyst, 4 parts of compatilizer, 5 parts of nucleating agent, 3 parts of hydrolysis resistance stabilizer and 3 parts of reinforcing agent;
the preparation method comprises the following steps:
s1: material acquisition: the preparation method comprises the steps that a professional obtains raw materials, wherein the raw materials comprise polylactic acid, plant slurry, starch plastics, polyhydroxyalkanoate polymer, compatilizer, nucleating agent, hydrolysis-resistant stabilizer and reinforcing agent when the raw materials are obtained, talcum powder is adopted as the nucleating agent, carbodiimide type hydrolysis-resistant stabilizer is adopted as the hydrolysis-resistant stabilizer, acrylic ester melt reinforcing agent is adopted as the reinforcing agent, and the professional pretreats part of the obtained raw materials to prepare plant nanocellulose after the raw materials are obtained;
s2: and (3) performing treatment: the obtained raw materials are processed by a professional, wherein the raw materials are weighed by the professional according to a proportion during the processing, the weighed raw materials are put into a stirrer for stirring, the rotating speed of the stirrer during the stirring is 280r/min, the primary stirring time is 35min, and the mixture formed after the stirring is sampled and detected by the professional after the primary stirring is finished, wherein the sampling volume during the sampling and detecting: the total volume of stirring was 1:999, judging by a professional through a sampling detection result, processing through the judgment result, wherein the sampling detection result shows that all raw material components are contained in a sampling sample, and each component proportion accords with a weighing proportion, judging that stirring is completed by other sampling detection results, stopping stirring when stirring is completed, collecting a mixture formed after stirring by the professional, adding the extracted raw material components and the corresponding component proportion by the professional through the sampling detection result when stirring is completed, carrying out secondary stirring, carrying out sampling detection by the professional after secondary stirring is completed, judging and processing through the sampling detection result until the sampling detection result shows that all raw material components are contained in the sampling sample, and each component proportion accords with the weighing proportion, stopping stirring, and collecting the mixture formed after stirring by the professional, wherein the weighing proportion of the raw material is polylactic acid when weighing: plant nanocellulose: starch plastic: polyhydroxyalkanoate-based polymer: and (3) a compatilizer: nucleating agent: hydrolysis-resistant stabilizer: the reinforcing agent is 6:5:4:3:1:2:2:1, a step of;
S3: the preparation is carried out: preparing a cellulose full-biodegradable blow molding material by extrusion blow molding of a processed raw material by a professional, wherein the preparation is performed by adding the collected mixture into an extruder by the professional to perform heating treatment to obtain a molten liquid, the heating process temperature is kept at 58 ℃, the heating time is 30min, the obtained molten liquid is pumped into a machine head through the extruder after heating is finished, and extrusion treatment is performed according to a preset program, wherein a parison with preset thickness and diameter is extruded through a tubular machine head in the preset time during extrusion treatment, and is hung in a cavity of a blow mold which is arranged right below the machine head and is separated in advance, and when the hanging parison reaches a preset length, two half molds for blow molding are closed by the professional, and the parison is cut off and clamped between the two half molds by utilizing the closing force of the molds, blow molding is performed after cutting off, wherein a blow head is required to be inserted from one end of the parison, the central axes of a process blow pipe, the parison and a blow molding cavity are the same, a compressed air is injected into the parison through the blow head on a parting surface of the mold, and the shape of the parison is formed into a full-biodegradable fiber material which is consistent with the shape of the blow molding cavity by utilizing the compressed air force;
S4: the test was performed: and (3) carrying out experiments on the prepared cellulose full-biodegradation blow molding material by a professional, wherein the professional firstly carries out use simulation on the prepared cellulose full-biodegradation blow molding material through material application, removes a part of the used cellulose full-biodegradation blow molding material, adopts a soil burying method to be buried in forests, soil and sludge compost, simultaneously takes out the rest of the used cellulose full-biodegradation blow molding material, adopts a mode of immersing the rest of the used cellulose full-biodegradation blow molding material in rivers and seawater, carries out biodegradation through utilizing microbiota in natural environment, wherein the degradation period is 6 months, detects the cellulose full-biodegradation blow molding material by the professional after the degradation is finished, records the quality loss and various performance degradation of the cellulose full-biodegradation blow molding material, carries out analysis through quality loss, microscopic observation and physical property degradation and a relative molecular mass method, calculates the degradation rate of the cellulose full-biodegradation blow molding material through analysis results, and simultaneously obtains the degradation rate of the existing cellulose full-biodegradation blow molding material through the professional, and carries out data comparison.
Example III
Referring to fig. 1, a cellulose degradation material comprises the following raw materials in parts by weight: 50 parts of polylactic acid, 30 parts of plant slurry, 20 parts of starch plastic, 20 parts of polyhydroxyalkanoate polymer, 9 parts of TEMPO catalyst, 12 parts of compatilizer, 11 parts of nucleating agent, 13 parts of hydrolysis resistance stabilizer and 13 parts of reinforcing agent;
the preparation method comprises the following steps:
s1: material acquisition: raw material acquisition is carried out by professionals, wherein the raw material comprises polylactic acid, plant slurry, starch plastic, polyhydroxyalkanoate polymer, compatilizer, nucleating agent, hydrolysis-resistant stabilizer and reinforcing agent when the raw material is acquired, talcum powder is adopted as the nucleating agent, carbodiimide type hydrolysis-resistant stabilizer is adopted as the reinforcing agent, acrylic ester melt reinforcing agent is adopted as the reinforcing agent, the raw material acquired by the professionals is pretreated after the raw material acquisition is completed, the professionals adopt a heat collection type constant temperature heating magnetic stirrer to dissolve the acquired plant slurry in eutectic solution when the pretreatment is carried out, and the solid-liquid ratio is 1 when the solution is carried out: 35, the temperature condition of the heat-collecting constant-temperature heating magnetic stirrer is constant at 160 ℃, the rotating speed is kept at 1800r/min and rotates at a constant speed, the dissolving time is 60min, the prepared plant dissolved cellulose is subjected to vacuum suction filtration by a professional after the dissolving is finished, the plant dissolved cellulose subjected to vacuum suction filtration is washed to be neutral by deionized water, the plant dissolved cellulose is obtained after the washing is finished, a TEMPO catalyst is added into the obtained plant dissolved cellulose by the professional after the drying is finished, the plant dissolved cellulose is stirred for 2.5h, the plant dissolved cellulose is decomposed through reaction and stirring to obtain plant nano cellulose with the diameter of 3-6nm, the rotating speed of the stirrer is 10000r/min when the stirring is carried out, the stirring time is 30min, the prepared plant nano cellulose is collected by the professional after the stirring is finished, and the collected plant nano cellulose is subjected to vacuum storage;
S2: and (3) performing treatment: the obtained raw materials are processed by a professional, wherein the raw materials are weighed by the professional according to a proportion during the processing, the weighed raw materials are put into a stirrer for stirring, the rotating speed of the stirrer during the stirring is 280r/min, the primary stirring time is 35min, and the mixture formed after the stirring is sampled and detected by the professional after the primary stirring is finished, wherein the sampling volume during the sampling and detecting: the total volume of stirring was 1:999, judging by professionals through sampling detection results, and processing through the judgment results, wherein the weighing proportion of raw materials is polylactic acid when weighing: plant nanocellulose: starch plastic: polyhydroxyalkanoate-based polymer: and (3) a compatilizer: nucleating agent: hydrolysis-resistant stabilizer: the reinforcing agent is 6:5:4:3:1:2:2:1, a step of;
s3: the preparation is carried out: preparing a cellulose full-biodegradable blow molding material by extrusion blow molding of a processed raw material by a professional, wherein the preparation is performed by adding the collected mixture into an extruder by the professional to perform heating treatment to obtain a molten liquid, the heating process temperature is kept at 73 ℃, the heating time is 50min, the obtained molten liquid is pumped into a machine head through the extruder after heating is finished, and extrusion treatment is performed according to a preset program, wherein a parison with preset thickness and diameter is extruded through a tubular machine head in the preset time during extrusion treatment, and is hung in a cavity of a blow mold which is arranged right below the machine head and is separated in advance, and when the hanging parison reaches a preset length, two half molds for blow molding are closed by the professional, and the parison is cut off and clamped between the two half molds by utilizing the closing force of the molds, blow molding is performed after cutting off, wherein a blow head is required to be inserted from one end of the parison, the central axes of a process blow pipe, the parison and a blow molding cavity are the same, a compressed air is injected into the parison through the blow head on a parting surface of the mold, and the shape of the parison is formed into a full-biodegradable fiber material which is consistent with the shape of the blow molding cavity by utilizing the compressed air force;
S4: the test was performed: and (3) carrying out experiments on the prepared cellulose full-biodegradation blow molding material by a professional, wherein the professional firstly carries out use simulation on the prepared cellulose full-biodegradation blow molding material through material application, removes a part of the used cellulose full-biodegradation blow molding material, adopts a soil burying method to be buried in forests, soil and sludge compost, simultaneously takes out the rest of the used cellulose full-biodegradation blow molding material, adopts a mode of immersing the rest of the used cellulose full-biodegradation blow molding material in rivers and seawater, carries out biodegradation through utilizing microbiota in natural environment, wherein the degradation period is 6 months, detects the cellulose full-biodegradation blow molding material by the professional after the degradation is finished, records the quality loss and various performance degradation of the cellulose full-biodegradation blow molding material, carries out analysis through quality loss, microscopic observation and physical property degradation and a relative molecular mass method, calculates the degradation rate of the cellulose full-biodegradation blow molding material through analysis results, and simultaneously obtains the degradation rate of the existing cellulose full-biodegradation blow molding material through the professional, and carries out data comparison.
Example IV
Referring to fig. 1, a cellulose degradation material comprises the following raw materials in parts by weight: 43 parts of polylactic acid, 26 parts of plant slurry, 14 parts of starch plastic, 19 parts of polyhydroxyalkanoate polymer, 6 parts of TEMPO catalyst, 6 parts of compatilizer, 10 parts of nucleating agent, 4 parts of hydrolysis resistance stabilizer and 11 parts of reinforcing agent;
the preparation method comprises the following steps:
s1: material acquisition: raw material acquisition is carried out by professionals, wherein the raw material comprises polylactic acid, plant slurry, starch plastic, polyhydroxyalkanoate polymer, compatilizer, nucleating agent, hydrolysis-resistant stabilizer and reinforcing agent when the raw material is acquired, talcum powder is adopted as the nucleating agent, carbodiimide type hydrolysis-resistant stabilizer is adopted as the reinforcing agent, acrylic ester melt reinforcing agent is adopted as the reinforcing agent, the raw material acquired by the professionals is pretreated after the raw material acquisition is completed, the professionals adopt a heat collection type constant temperature heating magnetic stirrer to dissolve the acquired plant slurry in eutectic solution when the pretreatment is carried out, and the solid-liquid ratio is 1 when the solution is carried out: 33, the temperature condition of the heat-collecting constant-temperature heating magnetic stirrer is constant at 100 ℃, the rotating speed is kept at 1500r/min and rotates at a constant speed, the dissolving time is 35min, the prepared plant dissolved cellulose is subjected to vacuum suction filtration by a professional after the dissolving is finished, the plant dissolved cellulose subjected to vacuum suction filtration is washed to be neutral by deionized water, the plant dissolved cellulose is obtained after the washing is finished, a TEMPO catalyst is added into the obtained plant dissolved cellulose by the professional after the drying is finished, the stirring is carried out for 2.5h, the plant dissolved cellulose is decomposed by the professional through reaction and stirring to obtain plant nano cellulose with the diameter of 3-6nm, the rotating speed of the stirrer is 5000r/min when the stirring is carried out, the stirring time is 30min, the prepared plant nano cellulose is collected by the professional after the stirring is finished, and the collected plant nano cellulose is subjected to vacuum storage;
S2: and (3) performing treatment: the obtained raw materials are processed by a professional, wherein the raw materials are weighed by the professional according to a proportion during the processing, the weighed raw materials are put into a stirrer for stirring, the rotating speed of the stirrer is 280r/min during the stirring, the primary stirring time is 35min, and the mixture formed after the stirring is collected by the professional;
s3: the preparation is carried out: preparing a cellulose full-biodegradable blow molding material by extrusion blow molding of a processed raw material by a professional, wherein the preparation is performed by adding the collected mixture into an extruder by the professional to perform heating treatment to obtain a molten liquid, the heating process temperature is kept at 64 ℃, the heating time is 48min, the obtained molten liquid is pumped into a machine head through the extruder after heating is finished, and extrusion treatment is performed according to a preset program, wherein a parison with preset thickness and diameter is extruded through a tubular machine head in the preset time during extrusion treatment, and is hung in a cavity of a blow mold which is arranged right below the machine head and is separated in advance, and when the hanging parison reaches a preset length, two half molds for blow molding are closed by the professional, and the parison is cut off and clamped between the two half molds by utilizing the closing force of the molds, blow molding is performed after cutting off, wherein a blow head is required to be inserted from one end of the parison, the central axes of a process blow pipe, the parison and a blow molding cavity are the same, a compressed air is injected into the parison through the blow head on a parting surface of the mold, and the shape of the parison is formed into a full-biodegradable fiber material which is consistent with the shape of the blow molding cavity by utilizing the compressed air force;
S4: the test was performed: and (3) carrying out experiments on the prepared cellulose full-biodegradation blow molding material by a professional, wherein the professional firstly carries out use simulation on the prepared cellulose full-biodegradation blow molding material through material application, removes a part of the used cellulose full-biodegradation blow molding material, adopts a soil burying method to be buried in forests, soil and sludge compost, simultaneously takes out the rest of the used cellulose full-biodegradation blow molding material, adopts a mode of immersing the rest of the used cellulose full-biodegradation blow molding material in rivers and seawater, carries out biodegradation through utilizing microbiota in natural environment, wherein the degradation period is 6 months, detects the cellulose full-biodegradation blow molding material by the professional after the degradation is finished, records the quality loss and various performance degradation of the cellulose full-biodegradation blow molding material, carries out analysis through quality loss, microscopic observation and physical property degradation and a relative molecular mass method, calculates the degradation rate of the cellulose full-biodegradation blow molding material through analysis results, and simultaneously obtains the degradation rate of the existing cellulose full-biodegradation blow molding material through the professional, and carries out data comparison.
Example five
Referring to fig. 1, a cellulose degradation material comprises the following raw materials in parts by weight: 41 parts of polylactic acid, 27 parts of plant slurry, 16 parts of starch plastic, 16 parts of polyhydroxyalkanoate polymer, 2 parts of TEMPO catalyst, 5 parts of compatilizer, 6 parts of nucleating agent, 7 parts of hydrolysis resistance stabilizer and 7 parts of reinforcing agent;
the preparation method comprises the following steps:
s1: material acquisition: raw material acquisition is carried out by professionals, wherein the raw material comprises polylactic acid, plant slurry, starch plastic, polyhydroxyalkanoate polymer, compatilizer, nucleating agent, hydrolysis-resistant stabilizer and reinforcing agent when the raw material is acquired, talcum powder is adopted as the nucleating agent, carbodiimide type hydrolysis-resistant stabilizer is adopted as the reinforcing agent, acrylic ester melt reinforcing agent is adopted as the reinforcing agent, the raw material acquired by the professionals is pretreated after the raw material acquisition is completed, the professionals adopt a heat collection type constant temperature heating magnetic stirrer to dissolve the acquired plant slurry in eutectic solution when the pretreatment is carried out, and the solid-liquid ratio is 1 when the solution is carried out: 27, the temperature condition of the heat-collecting constant-temperature heating magnetic stirrer is constant at 147 ℃, the rotating speed is kept at 400r/min and rotates at a constant speed, the dissolving time is 56min, the prepared plant dissolved cellulose is subjected to vacuum suction filtration by a professional after the dissolving is finished, the plant dissolved cellulose subjected to vacuum suction filtration is washed to be neutral by deionized water, the plant dissolved cellulose is obtained after the washing is finished, a TEMPO catalyst is added into the obtained plant dissolved cellulose by the professional after the drying is finished, and the plant dissolved cellulose is stirred for 2.5h, the plant dissolved cellulose is decomposed through reaction and stirring to obtain plant nano cellulose with the diameter of 3-6nm, wherein the rotating speed of the stirrer is 4560r/min when the stirring is carried out, the stirring time is 30min, the prepared plant nano cellulose is collected by the professional after the stirring is finished, and the collected plant nano cellulose is subjected to vacuum storage;
S2: and (3) performing treatment: the obtained raw materials are processed by a professional, wherein the raw materials are weighed by the professional according to a proportion during the processing, the weighed raw materials are put into a stirrer for stirring, the rotating speed of the stirrer during the stirring is 280r/min, the primary stirring time is 35min, and the mixture formed after the stirring is sampled and detected by the professional after the primary stirring is finished, wherein the sampling volume during the sampling and detecting: the total volume of stirring was 1:999, judging by a professional through a sampling detection result, processing through the judgment result, wherein the sampling detection result shows that all raw material components are contained in a sampling sample, and each component proportion accords with a weighing proportion, judging that stirring is completed by other sampling detection results, stopping stirring when stirring is completed, collecting a mixture formed after stirring by the professional, adding the extracted raw material components and the corresponding component proportion by the professional through the sampling detection result when stirring is completed, carrying out secondary stirring, carrying out sampling detection by the professional after secondary stirring is completed, judging and processing through the sampling detection result until the sampling detection result shows that all raw material components are contained in the sampling sample, and each component proportion accords with the weighing proportion, stopping stirring, and collecting the mixture formed after stirring by the professional, wherein the weighing proportion of the raw material is polylactic acid when weighing: plant nanocellulose: starch plastic: polyhydroxyalkanoate-based polymer: and (3) a compatilizer: nucleating agent: hydrolysis-resistant stabilizer: the reinforcing agent is 6:5:4:3:1:2:2:1, a step of;
S3: the preparation is carried out: preparing a cellulose full-biodegradable blow molding material by extrusion blow molding of a processed raw material by a professional, wherein the preparation is performed by adding the collected mixture into an extruder by the professional to perform heating treatment to obtain a molten liquid, the heating process temperature is kept at 69 ℃, the heating time is 40min, the obtained molten liquid is pumped into a machine head through the extruder after heating is finished, and extrusion treatment is performed according to a preset program, wherein a parison with preset thickness and diameter is extruded through a tubular machine head in the preset time during extrusion treatment, and is hung in a cavity of a blow mold which is arranged right below the machine head and is separated in advance, and when the hanging parison reaches a preset length, the two half molds for blow molding are closed by the professional, and the parison is cut off and clamped between the two half molds by utilizing the closing force of the molds, blow molding is performed after cutting off, wherein a blow head is required to be inserted from one end of the parison, the central axes of a process blow pipe, the parison and a blow mold cavity are the same, a compressed air is injected into the parison through the blow head on a parting surface of the mold, and the shape of the parison is formed into a full-biodegradable fiber material which is consistent with the shape of the blow molding cavity by utilizing the compressed air force.
The cellulose degradation material and the preparation method thereof in the first embodiment, the second embodiment, the third embodiment and the fourth embodiment are tested, and the following results are obtained:
| example 1 | Example two | Example III | Example IV | Example five | Existing methods | |
| Material degradation rate | 97% | 96% | 96% | 95% | 93% | 73% |
| Standard rate of sanitation | 100% | 99% | 98% | 97% | 94% | 62% |
| Performance improvement rate | 20.2% | 19.7% | 19.1% | 18.6% | 18.3% | 9.4% |
The cellulose full-biodegradation blow molding material prepared by the first embodiment, the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment has obviously improved material degradation rate, sanitation standard reaching rate and performance improving rate compared with the prior method, and the first embodiment is the best embodiment.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. The cellulose degradation material is characterized by comprising the following raw materials in parts by weight: 40-60 parts of polylactic acid, 25-35 parts of plant slurry, 10-30 parts of starch plastic, 15-25 parts of polyhydroxyalkanoate polymer, 1-11 parts of TEMPO catalyst, 3-12 parts of compatilizer, 5-15 parts of nucleating agent, 3-18 parts of hydrolysis-resistant stabilizer and 0-13 parts of reinforcing agent.
2. The cellulose degradation material according to claim 1, comprising the following raw materials in parts by weight: 40-50 parts of polylactic acid, 25-30 parts of plant slurry, 10-20 parts of starch plastic, 15-20 parts of polyhydroxyalkanoate polymer, 1-10 parts of TEMPO catalyst, 4-12 parts of compatilizer, 5-11 parts of nucleating agent, 3-13 parts of hydrolysis-resistant stabilizer and 3-13 parts of reinforcing agent.
3. A method for preparing a cellulose degradation material, comprising the steps of:
s1: material acquisition: raw material acquisition is performed by professionals;
s2: and (3) performing treatment: processing the obtained raw materials by professionals;
s3: the preparation is carried out: preparing the cellulose full-biodegradable blow molding material by extrusion blow molding of the treated raw materials by professionals;
s4: the test was performed: the prepared cellulose full-biodegradable blow molding material was tested by a professional.
4. The method for preparing a cellulose degradation material according to claim 3, wherein in S1, raw materials are obtained by a professional, wherein the raw materials include polylactic acid, plant slurry, starch plastic, polyhydroxyalkanoate polymer, compatilizer, nucleating agent, hydrolysis stabilizer and reinforcing agent when the raw materials are obtained, talcum powder is adopted as the nucleating agent, carbodiimide type hydrolysis stabilizer is adopted as the hydrolysis stabilizer, acrylic ester melt reinforcing agent is adopted as the reinforcing agent, the professional pretreats part of the obtained raw materials after the raw materials are obtained, wherein the professional uses a heat collecting type constant temperature heating magnetic stirrer to dissolve the obtained plant slurry in the eutectic solution when the pretreatment is carried out, and the solid-liquid ratio when the dissolution is carried out is 1:15-35, wherein the temperature condition of the heat-collecting constant-temperature heating magnetic stirrer is constant at 70-160 ℃, the rotating speed is kept at 300-1800r/min and the constant-speed rotation is carried out, the dissolving time is 30-60min, the prepared plant dissolved cellulose is subjected to vacuum suction filtration by a professional after the dissolving is finished, the plant dissolved cellulose subjected to vacuum suction filtration is washed to be neutral by deionized water, the plant dissolved cellulose is obtained after the washing is finished, a TEMPO catalyst is added into the obtained plant dissolved cellulose by the professional after the drying is finished, the stirring is carried out for 2.5h, the plant dissolved cellulose is decomposed by the professional through reaction and stirring to obtain the plant nano cellulose with the diameter of 3-6nm, wherein the rotating speed of the stirrer is 2000-10000r/min when the stirring is carried out, the stirring time is 30min, the prepared plant nano cellulose is collected by the professional after the stirring is finished, and the collected plant nano cellulose is subjected to vacuum storage.
5. A method for preparing a cellulose degradation material according to claim 3, wherein in S2, the obtained raw material is processed by a professional, wherein the raw material is weighed by the professional in proportion during the processing, and the weighed raw material is put into a stirrer for stirring, wherein the stirring speed is 280r/min, the stirring time is 35min, and the mixture formed after the stirring is sampled and detected by the professional after the completion of the stirring, wherein the sampling volume during the sampling and detecting: the total volume of stirring was 1:999, judging by a professional through a sampling detection result, processing through the judgment result, wherein the sampling detection result shows that all raw material components are contained in a sampling sample, and the proportion of each component accords with the weighing proportion, judging that stirring is completed, judging that stirring is incomplete by other sampling detection results, stopping stirring when the judgment result is that stirring is completed, collecting a mixture formed after stirring by the professional, adding the extracted raw material components and the proportion of the corresponding components through the sampling detection result by the professional when the judgment result is that stirring is incomplete, carrying out secondary stirring, carrying out sampling detection by the professional after the secondary stirring is completed, judging and processing through the sampling detection result until the sampling detection result shows that all raw material components are contained in the sampling sample, and the proportion of each component accords with the weighing proportion, stopping stirring, and collecting the mixture formed after stirring by the professional.
6. The method for producing a cellulose degradation material according to claim 5, wherein the weighing ratio of the raw materials at the time of weighing is polylactic acid: plant nanocellulose: starch plastic: polyhydroxyalkanoate-based polymer: and (3) a compatilizer: nucleating agent: hydrolysis-resistant stabilizer: the reinforcing agent is 6:5:4:3:1:2:2:1.
7. a method for producing a cellulose degradable material according to claim 3, wherein in S3, a cellulose fully biodegradable blow-molded material is produced by extrusion blow molding of a processed raw material by a professional, wherein the production is carried out by adding the collected mixture to an extruder by the professional and heating the obtained melt, the temperature of the heating process is kept at 55-75 ℃ for 30-50min, the obtained melt is pumped into a die head by the extruder after the heating is completed, and extrusion processing is carried out according to a preset program, wherein a parison of a preset thickness and diameter is extruded through a tubular die head during the extrusion processing in a preset time, and is hung in a cavity of a blow mold which is arranged in advance and is separated from the die head in advance, and when the hanging parison reaches a preset length, the parison is cut off and held between the two molds by the closing force of the mold by the professional, blow molding is carried out after the cutting, wherein a blow head is inserted from one end of the parison, and the tube, the parison and the central axis of the parison are injected into the cavity by compressed air of the same type as the blow mold, and the parison is formed into a hollow shape by the compressed air of the blow mold cavity by the compressed air, and the blow-molded parison is blown by the compressed air of the same shape as the cavity.
8. The method for preparing a cellulose degradation material according to claim 3, wherein in S4, the prepared cellulose full-biodegradation blow molding material is tested by a professional, wherein the test is performed by the professional firstly using the prepared cellulose full-biodegradation blow molding material through a material application simulation, removing a part of the used cellulose full-biodegradation blow molding material, burying the material in forests, soil and sludge compost by adopting a soil burying method, taking out the rest of the used cellulose full-biodegradation blow molding material, soaking the material in rivers and sea water, performing biodegradation by utilizing microorganism groups in natural environment, wherein the degradation period is 6 months, detecting the cellulose full-biodegradation blow molding material by the professional after the degradation is completed, recording the mass loss and various performance degradation of the cellulose full-biodegradation blow molding material, analyzing by a mass loss, a microscope observation, physical property degradation and a relative molecular mass method, calculating the degradation rate of the cellulose full-biodegradation blow molding material by the analysis result, and obtaining the degradation rate of the existing cellulose full-biodegradation blow molding material by the professional, and comparing the data rate.
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Application publication date: 20230606 |