CN111073229A - Biodegradable master batch containing modified papermaking waste and preparation method thereof - Google Patents
Biodegradable master batch containing modified papermaking waste and preparation method thereof Download PDFInfo
- Publication number
- CN111073229A CN111073229A CN201911378882.4A CN201911378882A CN111073229A CN 111073229 A CN111073229 A CN 111073229A CN 201911378882 A CN201911378882 A CN 201911378882A CN 111073229 A CN111073229 A CN 111073229A
- Authority
- CN
- China
- Prior art keywords
- papermaking waste
- biodegradable
- parts
- modified
- chloride
- 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
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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
Abstract
The invention provides a biodegradable master batch containing modified papermaking waste, which comprises the following components in parts by weight: PBAT40-70 parts, PLA10-20 parts, modified papermaking waste 10-50 parts, and assistant 1-10 parts. Wherein the modified papermaking waste comprises papermaking waste, a modifier accounting for 1-50% of the content of the papermaking waste and a phase transfer agent accounting for 0.1-5% of the content of the papermaking waste. The invention also provides a preparation method of the biodegradable masterbatch. The biodegradable masterbatch can be completely degraded by microorganisms in nature, and does not pollute the environment; the modified papermaking waste is selected, so that the compatibility with the biodegradable resin is improved, the mechanical property of the product is improved, and the practical requirement is met. In addition, the preparation method provided by the invention is simple to operate, effectively utilizes papermaking waste, improves the resource utilization rate, and is safe and environment-friendly; and the raw materials are wide in source and easy to obtain, the cost is low, and the method is suitable for large-scale popularization.
Description
Technical Field
The invention relates to the field of degradable composite materials, in particular to a biodegradable master batch containing modified papermaking waste and a preparation method thereof.
Background
In recent years, plastics have been widely used because of their excellent properties, but at the same time, more and more plastic wastes are generated, and the plastic wastes are extremely harmful to the environment if not properly treated. With the sustainable development of the society, people pay more attention to the environmental protection, the development of completely biodegradable products becomes a certain trend, and the problem of white pollution caused by the traditional plastics to the environment can be effectively reduced by replacing the common petrochemical plastic express bags with the papermaking waste modified biodegradable express bags.
The prior patent CN 107722582A discloses a biodegradable plastic film master batch and application thereof. The biodegradable plastic film master batch comprises the following components in parts by weight: 1-5 parts of stabilizer, 1-10 parts of lubricant, 1-30 parts of plasticizer, 1-10 parts of filler, 1-30 parts of corn starch, 1-20 parts of polyvinyl alcohol and 80-100 parts of polycaprolactone resin. But the polycaprolactone raw material cost is higher, and the film blowing yield is not easy to lower.
The pulp and paper industry separates about 1.4 million tons of cellulose from plants every year, and obtains a large amount of paper-making waste byproducts, but until now, more than 95 percent of paper-making waste is directly discharged into rivers or burnt after being concentrated, and is rarely effectively utilized. Therefore, the rational application of the papermaking waste becomes an important measure for protecting the environment and recycling resources.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a biodegradable master batch containing modified papermaking waste and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the first aspect of the invention provides a biodegradable master batch containing modified papermaking waste, which comprises the following components in parts by weight:
wherein the modified papermaking waste comprises papermaking waste, a modifying agent accounting for 1-50% of the mass of the papermaking waste and a phase transfer agent accounting for 0.1-5% of the mass of the papermaking waste.
Further, the modified papermaking waste comprises papermaking waste, a modifier accounting for 3-40% of the mass of the papermaking waste and a phase transfer agent accounting for 0.5-4% of the mass of the papermaking waste.
Further preferably, the modified papermaking waste comprises papermaking waste, 5-30% by mass of the modifying agent and 1-3% by mass of the phase transfer agent.
More preferably, the papermaking waste is one or more of rotten pulp, pulp residue, wood bark, pulping waste liquid extract and siliceous white mud.
Further, the particle size of the papermaking waste is between 100 and 5000 meshes.
Further preferably, the particle size of the papermaking waste is between 500-2000 mesh.
Further, the modifier is one or more of stearoyl chloride, acetyl chloride, benzoyl chloride, oxalyl chloride, chloroacetyl chloride and trichloroacetyl chloride.
Further, the modifier is stearoyl chloride or/and benzoyl chloride.
Further, the phase transfer agent is one or more of pyridine, tributylamine, tetrabutylammonium bromide, tetrabutylammonium chloride, tetrabutylammonium hydrogen sulfate, trioctylmethylammonium chloride, tetradecyltrimethylammonium chloride and cyclodextrin.
Further, the phase transfer agent is one or more of pyridine, tetradecyltrimethyl ammonium chloride and cyclodextrin.
Further, the melt index of PBAT and PLA was 3 to 5g/10min under the test condition of 2.16kg at 190 ℃.
Further, the auxiliary agent comprises the following components in parts by weight: 0.5-3 parts of cross-linking agent, 1-8 parts of plasticizer and 0.5-4 parts of dispersant.
Further preferably, the auxiliary agent comprises the following components in parts by weight: 0.8-1.5 parts of cross-linking agent, 3-6 parts of plasticizer and 1.5-2.5 parts of dispersing agent.
Further, the cross-linking agent is one or more of dicumyl peroxide, BPO (benzoyl peroxide), an oligomeric epoxy chain extender and tetrabutyl titanate; the plasticizer is one or more of TBC (tributyl citrate), ATBC (acetyl tributyl citrate), glycerol, epoxidized soybean oil white oil, glycerol and polyethylene glycol; the dispersant is one or more of stearic acid, butyl stearate, oleamide, ethylene bis stearamide and PE wax.
The second aspect of the present invention provides a preparation method of the biodegradable masterbatch containing modified papermaking waste, comprising the following steps:
step one, preparing modified papermaking waste: modifying the papermaking waste by using a modifier with the papermaking waste content of 1-50% and a phase transfer agent with the papermaking waste content of 0.1-5% in a high-speed mixer, wherein the reaction temperature is 100-;
step two, uniformly mixing the PBAT, the PLA, the modified papermaking waste obtained in the step one and the auxiliary agent according to the specified weight part to obtain a primary mixed material;
and step three, adding the primary mixed material obtained in the step two into a double-screw extruder bin, and extruding and granulating to obtain master batches.
Further, the reaction temperature of the high-speed mixer in the first step is 110-.
Further preferably, the reaction temperature of the high-speed mixer in the first step is 160 ℃ and the reaction time is 60-200min, and the reaction speed is 400rpm and 200-.
Furthermore, the temperature of each temperature zone of the double-screw extruder in the third step is 80-240 ℃, the head temperature is 80-240 ℃, and the rotating speed is 30-600 rpm.
Further preferably, the temperature of each temperature region of the twin-screw extruder in the third step is 110-.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
the biodegradable master batch containing the modified papermaking waste provided by the invention can be completely degraded by microorganisms in nature, and finally generates carbon dioxide and water without polluting the environment; the modified papermaking waste is selected, so that the compatibility with the biodegradable resin is improved, and the mechanical property of the biodegradable material is improved; the modified papermaking waste is added into the biodegradable resin, so that the cost of the biodegradable master batch containing the modified papermaking waste is reduced. In addition, the preparation method provided by the invention is simple to operate, effectively utilizes papermaking waste, is low in cost and is suitable for large-scale popularization.
Detailed Description
The present invention provides a biodegradable masterbatch containing modified papermaking waste and a method for preparing the same, which will be described in detail and specifically by the following examples to better understand the present invention, but the following examples do not limit the scope of the present invention.
Example 1
The embodiment provides a preferred biodegradable master batch containing modified papermaking waste, which comprises the following components in parts by weight:
the preparation method of the biodegradable masterbatch containing the modified papermaking waste provided by the embodiment comprises the following steps:
step one, preparing a modified pulping waste liquor extract:
(1) firstly, drying and crushing a certain amount of pulping waste liquid extract to 300-1000 meshes;
(2) and (3) placing the pulping waste liquor extract, stearoyl chloride accounting for 5% of the content of the pulping waste liquor extract and pyridine accounting for 1% of the content of the pulping waste liquor extract into a high-speed mixer, and modifying the pulping waste liquor extract for 120min at the temperature of 120 ℃ and the rotating speed of 300rpm to prepare the modified pulp waste liquor extract.
And step two, uniformly mixing the modified pulping waste liquid extract obtained in the step one, a cross-linking agent DCP, plasticizer white oil, a dispersant stearic acid, PBAT and PLA according to the specified weight part to obtain a primary mixture.
And step three, placing the primary mixture into a double-screw extruder for extrusion granulation, wherein the temperatures of a first zone to a sixth zone of the double-screw extruder are respectively 100 ℃, 115 ℃, 130 ℃, 185 ℃ and 185 ℃, the head temperature is 180 ℃, and the screw rotating speed is 200rpm, so as to prepare the biodegradable master batch.
Example 2
The embodiment provides a preferred biodegradable master batch containing modified papermaking waste, which comprises the following components in parts by weight:
the preparation method of the biodegradable masterbatch containing the modified papermaking waste provided by the embodiment comprises the following steps:
step one, preparing a modified pulping waste liquor extract:
(1) firstly, drying and crushing a certain amount of pulping waste liquid extract to 300-1000 meshes;
(2) and (2) placing the pulping waste liquor extract, stearoyl chloride accounting for 10% of the content of the pulping waste liquor extract and pyridine accounting for 2% of the content of the pulping waste liquor extract into a high-speed mixer, and modifying the pulping waste liquor extract for 180min at the temperature of 150 ℃ and the rotating speed of 500rpm to prepare the modified pulp waste liquor extract.
And step two, uniformly mixing the modified pulping waste liquid extract obtained in the step one, a cross-linking agent DCP, plasticizer white oil, a dispersant stearic acid, PBAT and PLA according to the specified weight part to obtain a primary mixture.
And step three, placing the primary mixture into a double-screw extruder for extrusion granulation, wherein the temperatures of a first zone to a sixth zone of the double-screw extruder are respectively 100 ℃, 115 ℃, 130 ℃, 185 ℃ and 185 ℃, the head temperature is 180 ℃, and the screw rotating speed is 200rpm, so as to prepare the biodegradable master batch.
Example 3
The embodiment provides a preferred biodegradable master batch containing modified papermaking waste, which comprises the following components in parts by weight:
the preparation method of the biodegradable masterbatch containing the modified papermaking waste provided by the embodiment comprises the following steps:
step one, preparing modified bean curd:
(1) firstly, drying and crushing a certain amount of rotten pulp to 800 meshes;
(2) and (3) placing the prepared rotten pulp, stearoyl chloride accounting for 20 percent of the rotten pulp and pyridine accounting for 3 percent of the rotten pulp into a high-speed mixer, and modifying the rotten pulp for 180min at the temperature of 150 ℃ and the rotating speed of 500rpm to prepare the modified rotten pulp.
And step two, uniformly mixing the modified humic acid slurry obtained in the step one, the cross-linking agent oligomeric epoxy chain extender, the plasticizer glycerol, the dispersant PE wax, the PBAT and the PLA according to the specified weight part, and obtaining a primary mixture.
And step three, placing the primary mixture into a double-screw extruder for extrusion granulation, wherein the temperatures of a first zone to a sixth zone of the double-screw extruder are respectively 150 ℃, 155 ℃, 180 ℃, 200 ℃, the head temperature is 190 ℃, and the screw rotating speed is 120rpm, so as to prepare the biodegradable master batch.
Example 4
The embodiment provides a preferred biodegradable master batch containing modified papermaking waste, which comprises the following components in parts by weight:
the preparation method of the biodegradable masterbatch containing the modified papermaking waste provided by the embodiment comprises the following steps:
step one, preparing modified wood veneer:
(1) firstly, drying a certain amount of wood veneer, and crushing to 800 meshes of 500-;
(2) and (3) placing the treated veneer, stearoyl chloride accounting for 15% of the veneer content and pyridine accounting for 2% of the veneer content into a high-speed mixer, and modifying the veneer for 300min at the temperature of 180 ℃ and the rotating speed of 600rpm to prepare the modified veneer.
And step two, uniformly mixing the modified wood veneer obtained in the step one, a cross-linking agent BPO, a plasticizer TBC, a dispersant stearic acid, PBAT and PLA according to the specified weight part, and obtaining a primary mixture.
And step three, placing the primary mixture into a double-screw extruder for extrusion granulation, wherein the temperature of the first zone to the sixth zone of the double-screw extruder is 150 ℃, 155 ℃, 160 ℃, 165 ℃, the head temperature is 160 ℃, and the screw rotation speed is 150rpm, so as to prepare the biodegradable master batch.
Example 5
The embodiment provides a preferred biodegradable master batch containing modified papermaking waste, which comprises the following components in parts by weight:
the preparation method of the biodegradable masterbatch containing the modified papermaking waste provided by the embodiment comprises the following steps:
step one, preparing modified wood veneer:
(1) firstly, drying a certain amount of wood veneer, and crushing to 800 meshes of 500-;
(2) and (3) placing the treated veneer, stearoyl chloride accounting for 15% of the veneer content and pyridine accounting for 2% of the veneer content into a high-speed mixer, and modifying the veneer for 300min at the temperature of 180 ℃ and the rotating speed of 600rpm to prepare the modified veneer.
And step two, uniformly mixing the modified wood veneer obtained in the step one, a cross-linking agent BPO, a plasticizer TBC, a dispersant stearic acid, PBAT and PLA according to the specified weight part, and obtaining a primary mixture.
And step three, placing the primary mixture into a double-screw extruder for extrusion granulation, wherein the temperatures of a first zone to a sixth zone of the double-screw extruder are respectively 150 ℃, 155 ℃, 160 ℃, 165 ℃, the head temperature is 160 ℃, and the screw rotation speed is 150rpm, so as to prepare the master batch.
Example 6
The embodiment provides a preferred biodegradable master batch containing modified papermaking waste, which comprises the following components in parts by weight:
the preparation method of the biodegradable masterbatch containing the modified papermaking waste provided by the embodiment comprises the following steps:
step one, preparing a modified pulping waste liquor extract:
(1) firstly, drying and crushing a certain amount of pulping waste liquid extract to 300-1000 meshes;
(2) and (2) placing the pulping waste liquor extract, stearoyl chloride accounting for 10% of the content of the pulping waste liquor extract and pyridine accounting for 2% of the content of the pulping waste liquor extract into a high-speed mixer, and modifying the pulping waste liquor extract for 180min at the temperature of 150 ℃ and the rotating speed of 500rpm to prepare the modified pulp waste liquor extract.
And step two, uniformly mixing the modified pulping waste liquid extract obtained in the step one, a cross-linking agent DCP, plasticizer white oil, a dispersant stearic acid, PBAT and PLA according to the specified weight part to obtain a primary mixture.
And step three, placing the primary mixture into a double-screw extruder for extrusion granulation, wherein the temperatures of a first zone to a sixth zone of the double-screw extruder are respectively 100 ℃, 115 ℃, 130 ℃, 185 ℃ and 185 ℃, the head temperature is 180 ℃, and the screw rotating speed is 200rpm, so as to prepare the master batch.
Comparative example 1
The comparative example provides a biodegradable master batch, which comprises the following components in parts by weight:
the preparation method of the biodegradable master batch containing the modified papermaking waste provided by the comparative example comprises the following steps:
step one, uniformly mixing a cross-linking agent BPO, glycerol, a dispersant stearic acid, PBAT and a pulping waste liquid extract according to specified parts by weight to obtain a primary mixture.
And step two, placing the primary mixture obtained in the step one in a double-screw extruder for extrusion granulation, wherein the temperatures of a first zone to a sixth zone of the double-screw extruder are respectively 170 ℃, 185 ℃, 190 ℃, 180 ℃ of a machine head, and the rotating speed of a screw is 100rpm, so as to obtain the master batch.
Comparative example 2
The comparative example provides a biodegradable master batch containing modified papermaking waste, which comprises the following components in parts by weight:
the preparation method of the biodegradable master batch containing the modified papermaking waste provided by the comparative example comprises the following steps:
uniformly mixing a cross-linking agent BPO, plasticizer white oil, a dispersant stearic acid, PBAT and tapioca starch according to specified parts by weight to obtain a primary mixture.
And step two, placing the primary mixture obtained in the step one in a double-screw extruder for extrusion granulation, wherein the temperatures of a first zone to a sixth zone of the double-screw extruder are respectively 50 ℃, 155 ℃, 160 ℃, 165 ℃, 160 ℃ and the head temperature of the double-screw extruder is 160 ℃, and the screw rotating speed is 100rpm, so as to obtain the master batch.
Verification examples
The master batches produced in the preparation processes of examples 1-6 and comparative examples are put into an injection molding machine for injection molding, and a universal electronic tensile testing machine (KY8000C type) is adopted to carry out performance detection according to a standard (GB/T1040.2-2006) method, wherein the specific data are shown in Table 1.
Table 1 results of performance testing
From the above results, the performance of the biodegradable masterbatch containing the modified papermaking waste is superior to that of the traditional biodegradable masterbatch, and the use requirements can be met.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (10)
1. The biodegradable master batch containing the modified papermaking waste is characterized by comprising the following components in parts by weight:
the modified papermaking waste comprises papermaking waste, a modifying agent accounting for 1-50% of the mass of the papermaking waste and a phase transfer agent accounting for 0.1-5% of the mass of the papermaking waste.
2. The biodegradable masterbatch containing modified papermaking waste according to claim 1, wherein the papermaking waste is one or more of a sapropel, a pulp residue, a wood bark, a pulp waste liquid extract, and a siliceous white mud.
3. The biodegradable masterbatch containing modified papermaking waste as set forth in claim 2, wherein the particle size of the papermaking waste is between 100 and 5000 mesh.
4. The biodegradable masterbatch containing modified papermaking waste according to claim 1, wherein the modifier is one or more selected from stearoyl chloride, acetyl chloride, benzoyl chloride, oxalyl chloride, chloroacetyl chloride and trichloroacetyl chloride.
5. The biodegradable masterbatch containing modified papermaking waste according to claim 1, wherein the phase transfer agent is one or more selected from pyridine, tributylamine, tetrabutylammonium bromide, tetrabutylammonium chloride, tetrabutylammonium hydrogen sulfate, trioctylmethylammonium chloride, tetradecyltrimethylammonium chloride, and cyclodextrin.
6. The biodegradable masterbatch containing modified papermaking waste according to claim 1, characterized in that the melt index of PBAT and PLA is 3-5g/10min at 190 ℃ under a test condition of 2.16 kg.
7. The biodegradable masterbatch containing modified papermaking waste according to claim 1, characterized in that the auxiliary comprises the following components in parts by weight: 0.5-3 parts of cross-linking agent, 1-8 parts of plasticizer and 0.5-4 parts of dispersant.
8. The preparation method of the biodegradable masterbatch containing modified papermaking waste according to any one of claims 1 to 7, comprising the following steps:
step one, preparing the modified papermaking waste: modifying the papermaking waste in a high-speed mixing machine by adopting the modifier and the phase transfer agent, wherein the reaction temperature is 100-180 ℃, the reaction time is 20-300min, and the reaction rotating speed is 100-800 rpm;
step two, uniformly mixing the PBAT, the PLA, the modified papermaking waste obtained in the step one and an auxiliary agent according to the specified weight part to obtain a primary mixed material;
and step three, adding the primary mixed material obtained in the step two into a double-screw extruder bin, and extruding and granulating to obtain master batches.
9. The biodegradable masterbatch containing modified papermaking waste as claimed in claim 8, wherein the reaction temperature of the high-speed mixer in the first step is 110-170 ℃, the reaction time is 30-250min, and the reaction speed is 150-600 rpm.
10. The method for preparing the biodegradable masterbatch containing the modified papermaking waste according to claim 9, wherein the temperature of each temperature zone of the twin-screw extruder in the third step is 80-240 ℃, the head temperature is 80-240 ℃, and the rotation speed is 30-600 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911378882.4A CN111073229A (en) | 2019-12-27 | 2019-12-27 | Biodegradable master batch containing modified papermaking waste and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911378882.4A CN111073229A (en) | 2019-12-27 | 2019-12-27 | Biodegradable master batch containing modified papermaking waste and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111073229A true CN111073229A (en) | 2020-04-28 |
Family
ID=70318641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911378882.4A Pending CN111073229A (en) | 2019-12-27 | 2019-12-27 | Biodegradable master batch containing modified papermaking waste and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111073229A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234486A (en) * | 2020-02-12 | 2020-06-05 | 上海昶法新材料有限公司 | Raw material composition and master batch of biodegradable material as well as preparation method and application of master batch |
| KR102361738B1 (en) * | 2020-07-27 | 2022-02-11 | 경북대학교 산학협력단 | Biodegradable composition and blown film containing polylactic acid |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000026274A1 (en) * | 1998-10-29 | 2000-05-11 | General Electric Company | Weatherable block copolyestercarbonates and blends containing them |
| CN101029178A (en) * | 2007-02-25 | 2007-09-05 | 湖北工业大学 | Production of polymer/pulp fibre composite material |
| CN102311550A (en) * | 2010-11-17 | 2012-01-11 | 北京林业大学 | Esterifiable modification method of lignocelluloses and esterifiable modified lignocelluloses |
| CN109762307A (en) * | 2018-12-20 | 2019-05-17 | 上海昶法新材料有限公司 | A kind of dedicated antibacterial matrices of biodegradable garbage bag and preparation method thereof |
-
2019
- 2019-12-27 CN CN201911378882.4A patent/CN111073229A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000026274A1 (en) * | 1998-10-29 | 2000-05-11 | General Electric Company | Weatherable block copolyestercarbonates and blends containing them |
| CN101029178A (en) * | 2007-02-25 | 2007-09-05 | 湖北工业大学 | Production of polymer/pulp fibre composite material |
| CN102311550A (en) * | 2010-11-17 | 2012-01-11 | 北京林业大学 | Esterifiable modification method of lignocelluloses and esterifiable modified lignocelluloses |
| CN109762307A (en) * | 2018-12-20 | 2019-05-17 | 上海昶法新材料有限公司 | A kind of dedicated antibacterial matrices of biodegradable garbage bag and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234486A (en) * | 2020-02-12 | 2020-06-05 | 上海昶法新材料有限公司 | Raw material composition and master batch of biodegradable material as well as preparation method and application of master batch |
| KR102361738B1 (en) * | 2020-07-27 | 2022-02-11 | 경북대학교 산학협력단 | Biodegradable composition and blown film containing polylactic acid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111073228A (en) | Biodegradable garbage bag and preparation method thereof | |
| CN112280263B (en) | Lignin-based biodegradable polymer composite film and preparation method thereof | |
| CN111100368A (en) | Papermaking waste modified plastic film express bag and preparation method thereof | |
| CN111410822B (en) | PBAT/PLA starch-based completely biodegradable material and preparation method thereof | |
| CN111471285B (en) | Epoxidized lignin modified biodegradable film and preparation method thereof | |
| CN113248875A (en) | Fully-degradable shopping bag film and preparation method thereof | |
| CN109762307A (en) | A kind of dedicated antibacterial matrices of biodegradable garbage bag and preparation method thereof | |
| CN111073229A (en) | Biodegradable master batch containing modified papermaking waste and preparation method thereof | |
| CN113524829A (en) | Full-degradable weeding mulching film and preparation method thereof | |
| CN112175330A (en) | Completely biodegradable plastic film prepared from straws and preparation method thereof | |
| CN111087673A (en) | Modified plastic film express bag and preparation method thereof | |
| CN109694557A (en) | A kind of degradable cover film and preparation method thereof for refuse landfill | |
| CN103012949B (en) | A kind of polypropylene base wood-plastic composite material and preparation method thereof | |
| CN115418083A (en) | Low-cost PBAT biodegradable material for film bag and preparation method thereof | |
| CN106280343B (en) | A kind of biodegradable composite and preparation method thereof of bagasse graft copolymer enhancing | |
| CN110894344A (en) | Papermaking waste modified antibacterial degradable garbage bag and preparation method thereof | |
| CN111087775A (en) | Biodegradable composite material, preparation method and biodegradable container bottom plate | |
| CN112405931A (en) | Preparation method of nano-montmorillonite reinforced starch-based biodegradable blown film material, product and application thereof | |
| CN111234037A (en) | Biodegradable master batch, profile, raw materials and preparation method thereof | |
| CN114921069B (en) | Full-biodegradable film with high heat seal strength and preparation method and application thereof | |
| CN115466491A (en) | High-modulus degradable PBAT/PLA compound and preparation method thereof | |
| CN114350057A (en) | Bio-based plastic, raw material composition thereof, and preparation method and application thereof | |
| CN114106418B (en) | Plasticized starch, bio-based plastic and raw material composition, preparation method and application thereof | |
| CN111100471A (en) | PE-based injection molding material added with modified papermaking waste and preparation method thereof | |
| CN111978599A (en) | Heat-resistant starch-degradable plastic improved by silica sol and preparation method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200428 |
|
| RJ01 | Rejection of invention patent application after publication |