CN115160748A - Reed-based biodegradable fertilizing seedling raising plug tray and preparation method thereof - Google Patents
Reed-based biodegradable fertilizing seedling raising plug tray and preparation method thereof Download PDFInfo
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- CN115160748A CN115160748A CN202210826672.2A CN202210826672A CN115160748A CN 115160748 A CN115160748 A CN 115160748A CN 202210826672 A CN202210826672 A CN 202210826672A CN 115160748 A CN115160748 A CN 115160748A
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- 235000014676 Phragmites communis Nutrition 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 24
- 239000004626 polylactic acid Substances 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 24
- 239000004698 Polyethylene Substances 0.000 claims abstract description 23
- 229920001610 polycaprolactone Polymers 0.000 claims abstract description 23
- 239000004632 polycaprolactone Substances 0.000 claims abstract description 23
- 229920000573 polyethylene Polymers 0.000 claims abstract description 23
- 229920002643 polyglutamic acid Polymers 0.000 claims abstract description 22
- 230000035558 fertility Effects 0.000 claims abstract description 13
- 230000002708 enhancing effect Effects 0.000 claims abstract description 11
- 239000004014 plasticizer Substances 0.000 claims abstract description 10
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Natural products OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 26
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- -1 citric acid triester Chemical class 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 230000001965 increasing effect Effects 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 239000003337 fertilizer Substances 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 238000010104 thermoplastic forming Methods 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 238000006065 biodegradation reaction Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 8
- 239000002689 soil Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000004060 metabolic process Effects 0.000 abstract description 2
- 235000015816 nutrient absorption Nutrition 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 244000273256 Phragmites communis Species 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000012010 growth Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 206010003694 Atrophy Diseases 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000037444 atrophy Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000021749 root development Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F11/00—Other organic fertilisers
-
- 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
-
- 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
-
- 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)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)
Abstract
The invention discloses a reed-based biodegradable fertilizing seedling raising plug tray and a preparation method thereof, belonging to the technical field of new biodegradable materials. The invention comprises the following components in parts by weight: 40-65 parts of polylactic acid, 10-30 parts of fertility enhancing reed powder, 5 parts of plasticizer, 10-30 parts of polycaprolactone and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer. The seedling raising plug tray prepared by the method can be biodegraded, avoids the pollution problem caused by abandonment of the seedling raising plug tray used at present, reduces root system damage and manual labor intensity caused by transplanting seedlings, and can improve the soil structure, improve nutrient absorption, promote the physiological metabolism of plants, promote maturity and increase yield. In addition, the technology provides a way for the resource utilization of the agricultural and forestry wastes such as the reed.
Description
Technical Field
The invention belongs to the technical field of a bio-based degradable new material, and particularly relates to a reed-based biodegradable fertilizing seedling raising plug tray and a preparation method thereof.
Background
With the rapid development of indoor seedling raising technology in China, seedling raising and transplanting become a common mode for planting crops, vegetables, flowers and the like. The plug seedling is a great change in modern agricultural production, and compared with direct seeding, the plug seedling has the advantages of reducing the dosage of seeds, ensuring the consistent growth and development of cultivated seedlings, improving the quality of the seedlings and providing guarantee for large-scale planting and production. At present, the materials for manufacturing the seedling raising plug tray mainly comprise non-degradable high polymer materials of petrochemical sources such as polyethylene, polystyrene, polyvinyl chloride, polypropylene and the like. The plastic seedling raising plug is difficult to degrade under natural conditions, and remains in soil after being discarded to influence soil quality, thereby causing crop yield reduction and environmental pollution. In addition, the plastic plug seedling is needed to be transferred when being planted, the root system of the seedling is easy to be damaged, the growth of the seedling is affected, and the seedling needs a certain time of seedling revival after being buried in soil, so that the maturity time of the plant is prolonged, and meanwhile, the mechanical operation of the transplantation can not be realized, and a large amount of labor is consumed.
Reed is a herbaceous plant widely distributed in China, and contains a large amount of cellulose and hemicellulose. Along with the atrophy of the reed industry, a large amount of reeds are abandoned and rotten in a water body, so that the water quality is deteriorated and cannot be effectively utilized. At present, the reed is low in resource utilization consumption and low in added value, and is mainly used for raw material supply of reed foil, papermaking and the like.
Therefore, providing a reed-based biodegradable fertilizing seedling raising plug tray is a problem that needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of the above, the invention provides a reed-based biodegradable fertilizing seedling raising plug tray and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a reed-based biodegradable fertilizing and seedling raising plug tray comprises the following components in parts by weight: 40-65 parts of polylactic acid, 10-30 parts of polycaprolactone, 10-30 parts of fertility enhancing reed powder, 5 parts of plasticizer and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer.
Further, the paint comprises the following components in parts by weight: 60 parts of polylactic acid, 10 parts of polycaprolactone, 20 parts of fertility enhancing reed powder, 5 parts of plasticizer and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer.
Further, the plasticizer is citric acid triester.
Further, the preparation method of the weight-gaining reed powder comprises the following steps:
1) Crushing the reed into 5cm sections by using a double-shaft shredder, removing dust, cleaning, and processing the reed into fine fibers by using a double-screw impregnation extruder, wherein the reaction temperature is 90 ℃, and the screw rotating speed is 200r/min;
2) Adding sodium hydroxide into a dosing area of equipment by adopting a flow pump, wherein the weight ratio of the sodium hydroxide to the reed is 1;
3) The reed is ground to 300-500 meshes by a high-concentration disc mill, and 0.5 percent of silane coupling agent KH570 in parts by weight is added and uniformly mixed at high speed.
A preparation method of a reed-based biodegradable fertilizing seedling raising plug tray comprises the following steps:
(1) Vacuum drying polylactic acid, polycaprolactone and polylactic acid-polyethylene glycol-polyglutamic acid copolymer at 60 deg.C for 8 hr;
(2) Uniformly mixing polylactic acid, fertilizing reed powder, a plasticizer, polycaprolactone and a polylactic acid-polyethylene glycol-polyglutamic acid copolymer according to a formula ratio, adding the mixture into a double-screw extruder, heating to melt the mixture at 180-190 ℃ at a screw rotating speed of 200r/min, and extruding a sheet with the thickness of 0.4mm by the double-screw extruder after mixing and melting;
(3) And (3) carrying out plastic sucking processing on the sheet prepared in the step (2) by a thermoplastic forming machine at the temperature of 100-130 ℃ through a mould to form a seedling raising plug tray.
According to the technical scheme, compared with the prior art, the invention has the beneficial effects that:
according to the reed-based biodegradable fertilizing and seedling raising plug tray prepared by the invention, the wax layer on the surface of the processed reed is removed, so that the roughness of the surface of the reed fiber is improved, the contact area between the reed fiber and degradable materials such as polylactic acid is increased, the adhesive force between the reed fiber and the interfaces such as polylactic acid and polycaprolactone is enhanced, and the mechanical property is improved. In addition, the lignin in the reed can be degraded into humus by technical treatment, and the enriched reed powder is rich in organic substances such as potassium fulvate and the like, so that the growth of plants can be promoted, and the soil fertility can be improved. The seedling culture hole tray prepared by the method is biodegradable, replaces the traditional seedling culture hole tray, can reduce white pollution, improves labor efficiency, utilizes wastes such as reeds at high value, and realizes recycling of renewable biomass resources.
The seedling raising plug tray prepared by the method can be biodegraded, avoids the pollution problem caused by abandonment of the seedling raising plug tray used at present, reduces root system damage and manual labor intensity caused by transplanting seedlings, and can improve the soil structure, improve nutrient absorption, promote the physiological metabolism of plants, promote maturity and increase yield. In addition, the technology provides a way for the resource utilization of the agricultural and forestry wastes such as the reed.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a reed-based biodegradable fertilizing and seedling raising plug tray which comprises:
the formula is as follows: 60 parts of polylactic acid, 10 parts of polycaprolactone, 20 parts of fattening reed powder, 5 parts of citric acid triester and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer;
the preparation method of the weight-gaining reed powder comprises the following steps:
1) Crushing the reed into 5cm sections by using a double-shaft shredder, removing dust, cleaning, processing the reed into fine fibers by using a double-screw impregnation extruder, wherein the reaction temperature is 90 ℃, and the screw rotation speed is 200r/min;
2) Adding sodium hydroxide into a dosing area of equipment by adopting a flow pump, wherein the weight ratio of the sodium hydroxide to the reed is 1;
3) The reed is ground into 400 meshes by a high-concentration disc mill, and the silane coupling agent KH570 with the mass fraction of 0.5 percent is added to be uniformly mixed at high speed.
A preparation method of a reed-based biodegradable fertilizing seedling raising plug tray comprises the following steps:
(1) Vacuum drying polylactic acid, polycaprolactone and polylactic acid-polyethylene glycol-polyglutamic acid copolymer at 60 deg.C for 8 hr;
(2) Uniformly mixing polylactic acid, fertilizer increasing reed powder, a plasticizer, polycaprolactone and a polylactic acid-polyethylene glycol-polyglutamic acid copolymer according to a formula ratio, adding the mixture into a double-screw extruder, heating to melt at 185 ℃, rotating the screw at 200r/min, and extruding a sheet with the thickness of 0.4mm by using the double-screw extruder after mixing and melting;
(3) And (3) carrying out plastic sucking processing on the sheet prepared in the step (2) by a thermoplastic forming machine at 120 ℃ through a mold to form a seedling raising plug tray.
Example 2:
a reed-based biodegradable fertilizing and seedling raising plug tray which comprises:
the formula is as follows: 50 parts of polylactic acid, 20 parts of polycaprolactone, 20 parts of fertility enhancing reed powder, 5 parts of citric acid triester and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer;
step 2), adjusting the pH value to 6.0 by using dilute sulfuric acid;
heating and melting the mixture at 180 ℃, and carrying out plastic sucking processing on the mixture at 100 ℃ to obtain a seedling raising plug tray in the step (3);
the rest of the preparation steps are the same as example 1.
Example 3:
a reed-based biodegradable fertilizing and seedling raising plug tray which comprises:
the formula is as follows: 40 parts of polylactic acid, 30 parts of polycaprolactone, 10 parts of fertility enhancing reed powder, 5 parts of citric acid triester and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer;
step 2), adjusting the pH value to 6.8 by using dilute sulfuric acid;
heating and melting the mixture at 187 ℃, and carrying out plastic sucking processing on the mixture at 110 ℃ to obtain a seedling raising plug tray in the step (3);
the rest of the preparation steps are the same as example 1.
Example 4:
a reed-based biodegradable fertilizing and seedling raising plug tray which comprises:
the formula is as follows: 65 parts of polylactic acid, 10 parts of polycaprolactone, 20 parts of fertilizing reed powder, 5 parts of citric acid triester and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer;
step 2), adjusting the pH value to 6.3 by using dilute sulfuric acid;
heating to a melting temperature of 189 ℃, and carrying out plastic sucking and processing to form a seedling raising plug tray by a mold at 110 ℃ in the step (3);
the rest of the preparation steps are the same as example 1.
Example 5:
a reed-based biodegradable fertilizing and seedling raising plug tray which comprises:
the formula is as follows: 50 parts of polylactic acid, 10 parts of polycaprolactone, 30 parts of fertility enhancing reed powder, 5 parts of citric acid triester and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer;
step 2), adjusting the pH value to 7.0 by using dilute sulfuric acid;
heating and melting at 190 ℃ in the step (2), and carrying out plastic sucking processing on the mixture in the step (3) at 130 ℃ by a mold to form a seedling raising plug tray;
the rest of the preparation steps are the same as example 1.
Comparative example 1:
a reed-based biodegradable fertilizing and seedling raising plug tray which comprises:
the formula is as follows: 80 parts of polylactic acid, 20 parts of fertility enhancing reed powder, 5 parts of citric acid triester and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer;
the rest of the preparation steps are the same as example 1.
Comparative example 2:
a reed-based biodegradable fertilizing and seedling raising plug tray which comprises:
the formula is as follows: 80 parts of polylactic acid, 10 parts of polycaprolactone, 5 parts of citric acid triester and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer;
preparing reed powder without increasing fertilizer;
the rest of the preparation steps are the same as example 1.
Comparative example 3:
a reed-based biodegradable fertilizing and seedling raising plug tray which comprises:
the formula is as follows: 60 parts of polylactic acid, 10 parts of polycaprolactone, 20 parts of fertilizing reed powder and 5 parts of citric acid triester;
the rest of the preparation steps are the same as example 1.
Comparative example 4:
a reed-based biodegradable fertilizing and seedling raising plug tray which comprises:
the formula is as follows: 60 parts of polylactic acid, 10 parts of polycaprolactone, 20 parts of fertility enhancing reed powder and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer;
the rest of the preparation steps are the same as example 1.
Comparative example 5:
a reed-based biodegradable fertilizing and seedling raising plug tray which comprises:
the formula is as follows: 70 parts of polylactic acid, 10 parts of polycaprolactone, 10 parts of fertility enhancing reed powder, 5 parts of citric acid triester and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer;
the rest of the preparation steps are the same as example 1.
The composite materials prepared by blending in examples 1-5 and comparative examples 1-5 were tested for mechanical properties according to GB/T1040.1-2018, and the sheets prepared by twin-screw extruders in examples 1-5 and comparative examples 1-4 were tested for water absorption according to GB/T1034-2008, and the disintegration rates at 4 weeks and 12 weeks were determined according to GB/T19811-2005, see Table 1.
TABLE 1 Properties of composite materials prepared with different raw material ratios for the production of seedling trays
As can be seen from the results in Table 1, compared with the mechanical properties of examples 1-3 and comparative example 1, the toughness of the seedling plug tray material can be improved by adding 10 parts of polycaprolactone, and damage in the processing and using processes can be avoided.
Compared with the water absorption rate and disintegration rate of the materials of the comparative examples 1-5 and 2, 5, the water absorption rate of the material can be increased after the reed powder is added, the disintegration rate is increased, the rapid decomposition of the seedling raising plug tray in soil is facilitated, the influence on the root development is avoided, and meanwhile, organic substances can be gradually released to improve the soil fertility around the root system.
By comprehensively comparing examples 1-5 and comparative examples 1-4 and considering factors such as production cost and performance increase ratio, the raw material ratio of the reed-based weight-gaining seedling raising plug tray is preferably 60 parts of polylactic acid, 10 parts of polycaprolactone, 20 parts of weight-gaining reed powder, 5 parts of citric acid triester and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer. The addition of the citric acid triester, the polylactic acid-polyethylene glycol-polyglutamic acid and other additives can change the compatibility among materials, improve the toughness and the water absorption and have a certain synergistic effect.
According to the seedling culture plug trays prepared in GB/T19277.1-2011 standard detection examples 1-5, the biological decomposition rate is measured, and the result shows that the biological decomposition rate is more than or equal to 70% in 45 days, and the relative biological decomposition rate is more than or equal to 90% in 90 days, so that the seedling culture plug trays have good biological degradability.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A reed-based biodegradable fertilizing and seedling raising plug tray is characterized by comprising the following components in parts by weight: 40-65 parts of polylactic acid, 10-30 parts of polycaprolactone, 10-30 parts of fertility enhancing reed powder, 5 parts of plasticizer and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer.
2. The reed-based biodegradation, fertilizing and seedling raising plug tray as claimed in claim 1, is characterized by comprising the following components in parts by weight: 60 parts of polylactic acid, 10 parts of polycaprolactone, 20 parts of fertility enhancing reed powder, 5 parts of plasticizer and 5 parts of polylactic acid-polyethylene glycol-polyglutamic acid copolymer.
3. The reed-based biodegradable fertilizing and seedling raising plug tray as claimed in claim 1, wherein the plasticizer is citric acid triester.
4. The reed-based biodegradable fertilizing and seedling raising plug tray as claimed in claim 1, wherein the preparation method of the fertilizing and seedling raising reed powder comprises the following steps:
1) Crushing the reed into 5cm sections by using a double-shaft shredder, removing dust, cleaning, and processing the reed into fine fibers by using a double-screw impregnation extruder, wherein the reaction temperature is 90 ℃, and the screw rotating speed is 200r/min;
2) Adding sodium hydroxide into a dosing area of equipment by adopting a flow pump, wherein the weight ratio of the sodium hydroxide to the reed is 1;
3) The reed is ground to 300-500 meshes by a high-concentration disc mill, and 0.5 percent of silane coupling agent KH570 in parts by weight is added and uniformly mixed at high speed.
5. The preparation method of the reed-based biodegradable fertilizing and seedling raising plug tray as claimed in claim 1, is characterized by comprising the following steps:
(1) Vacuum drying polylactic acid, polycaprolactone and polylactic acid-polyethylene glycol-polyglutamic acid copolymer at 60 deg.C for 8 hr;
(2) Uniformly mixing polylactic acid, fertilizer increasing reed powder, a plasticizer, polycaprolactone and a polylactic acid-polyethylene glycol-polyglutamic acid copolymer according to a formula ratio, adding the mixture into a double-screw extruder, heating to melt at 180-190 ℃, rotating the screw at 200r/min, and extruding a sheet with the thickness of 0.4mm by the double-screw extruder after mixing and melting;
(3) And (3) carrying out plastic sucking on the sheet prepared in the step (2) by a thermoplastic forming machine at the temperature of 100-130 ℃ through a mold to form a seedling raising plug tray.
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| CN115160748B CN115160748B (en) | 2024-09-03 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421286A (en) * | 2013-08-08 | 2013-12-04 | 华南理工大学 | High temperature resistant and degradable polylactic acid wood plastic material and preparation method thereof |
| CN104212138A (en) * | 2014-09-01 | 2014-12-17 | 中国林业科学研究院林产化学工业研究所 | High-liquidity polylactic acid-based wood plastic injection molding composite material and preparation method thereof |
| CN105860144A (en) * | 2016-06-25 | 2016-08-17 | 芜湖三刀材料科技有限公司 | High-compatibility plant fiber material preparation method |
| CN111732822A (en) * | 2020-07-31 | 2020-10-02 | 江苏兆维塑料科技有限公司 | High-surface-compatibility nettle/polylactic acid fiber biological composite material and preparation method and application thereof |
| CN112521730A (en) * | 2020-11-23 | 2021-03-19 | 陈京灿 | Biodegradable composite material and preparation method thereof |
-
2022
- 2022-07-13 CN CN202210826672.2A patent/CN115160748B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421286A (en) * | 2013-08-08 | 2013-12-04 | 华南理工大学 | High temperature resistant and degradable polylactic acid wood plastic material and preparation method thereof |
| CN104212138A (en) * | 2014-09-01 | 2014-12-17 | 中国林业科学研究院林产化学工业研究所 | High-liquidity polylactic acid-based wood plastic injection molding composite material and preparation method thereof |
| CN105860144A (en) * | 2016-06-25 | 2016-08-17 | 芜湖三刀材料科技有限公司 | High-compatibility plant fiber material preparation method |
| CN111732822A (en) * | 2020-07-31 | 2020-10-02 | 江苏兆维塑料科技有限公司 | High-surface-compatibility nettle/polylactic acid fiber biological composite material and preparation method and application thereof |
| CN112521730A (en) * | 2020-11-23 | 2021-03-19 | 陈京灿 | Biodegradable composite material and preparation method thereof |
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