CN113355949B - Preparation method of paper-based mulching film - Google Patents
Preparation method of paper-based mulching film Download PDFInfo
- Publication number
- CN113355949B CN113355949B CN202110708065.1A CN202110708065A CN113355949B CN 113355949 B CN113355949 B CN 113355949B CN 202110708065 A CN202110708065 A CN 202110708065A CN 113355949 B CN113355949 B CN 113355949B
- Authority
- CN
- China
- Prior art keywords
- paper
- mulching film
- bamboo powder
- micro
- nano
- 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.)
- Active
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
- A01G13/0275—Films
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
- D21H11/18—Highly hydrated, swollen or fibrillatable fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/13—Silicon-containing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; Derivatives thereof
- D21H17/15—Polycarboxylic acids, e.g. maleic acid
- D21H17/16—Addition products thereof with hydrocarbons
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/17—Ketenes, e.g. ketene dimers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/55—Polyamides; Polyaminoamides; Polyester-amides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/56—Polyamines; Polyimines; Polyester-imides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength agents
Abstract
The invention relates to a preparation method of a paper-based mulching film. The method comprises the following steps: 1) adding 1-10% sodium hydroxide solution into bamboo powder, shaking at constant temperature of 65-95 deg.C for 1-3 h, washing to neutrality to obtain 1-3% water suspension, and circularly grinding with colloid mill for 1-5 times to obtain micro-nano bamboo powder (NBF). 2) The natural color softwood pulp with the mass percentage of 20% -40%, the nano cellulose with the mass percentage of 3% -10% and the micro-nano bamboo powder with the mass percentage of 55% -75% are mixed, then, the water repellent agent with the mass percentage of 0.01% -1% and the wet strength agent with the mass percentage of 1% -3% relative to the oven-dry pulp are added, and the paper-based mulching film is prepared by using a paper making method. The invention uses micro-nano bamboo powder to replace part of softwood pulp, and aims to reduce the roughness of the surface of paper, improve the lignin content of the paper, improve the tensile strength and the hydrophobic property of the mulching paper and reduce the manufacturing cost of the mulching paper.
Description
Technical Field
The invention belongs to the field of special paper manufacturing, and particularly relates to a preparation method of a paper-based mulching film.
Background
In the early 50 s of the 20 th century, the mulching technology brings great economic and social benefits to agriculture. The main components of the early-used plastic mulching film are non-degradable polypropylene and polyvinyl chloride, and the plastic mulching film is paved on the soil surface to easily cause soil hardening, so that the permeability is poor, the growth and the yield of crops are influenced, and the sustainable development of agriculture is restricted. Aiming at the problem of the mulching film, various countries begin to develop and popularize degradable environment-friendly mulching films.
At present, degradable mulching films are mainly classified into four types, namely photodegradable agricultural mulching films, biodegradable agricultural mulching films, double-degradable mulching films and plant fiber mulching films. Whether the secondary pollution of decomposed products generated in the degradation process of the photodegradation agricultural mulching film to the atmosphere, water quality and soil is needed to be further determined, the mulching film only solves the pollution problem caused by the accumulation of the cultivation surface layer, and the residual mulching film buried in the soil cannot be degraded. The biodegradable agricultural mulching film is characterized in that partial biodegradable raw materials such as starch, chitosan and the like are added on the basis of an original mulching film material, the mulching film belongs to a non-completely degradable mulching film, only biodegradable parts in the mulching film are degraded, and the plastic parts only change the shape and reduce the performance. The double-degradation mulching film only degrades the mulching film into small particles, which can cause the generation of micro-plastics. The plant fiber mulching film can be completely biodegraded, the soil texture is improved, and the original effects of the mulching film, such as insect prevention, weed removal, nutrient enrichment and the like, are maintained. However, the existing plant fiber mulching film still has the problems of insufficient dry and wet strength and breaking strength and high paper pulp cost, so that the popularization and the use are difficult.
Disclosure of Invention
The invention aims to provide a preparation method of a paper-based mulching film, so that the paper-based mulching film has excellent hydrophobic property, good paper strength, safe use, environmental protection and degradability.
The technical scheme adopted by the invention for solving the technical problem is as follows:
the preparation method of the paper-based mulching film comprises the following steps:
micro-nano bamboo powder preparation: accurately weighing 10-20 g of 20-80-mesh bamboo powder as a raw material, adding 100 ml of sodium hydroxide solution with the mass concentration of 1-10%, and oscillating at the constant temperature of 65-95 ℃ for 1-3 h;
washing the bamboo powder to be neutral, preparing aqueous suspension with the mass concentration of 1% -3%, and circularly grinding for 1-5 times by using a colloid mill to obtain the micro-nano bamboo powder (NBF).
Preparing a paper-based mulching film: taking 20-40% of natural color softwood pulp (the amount of other substances is the mass percentage of the total absolutely dry fibers) by mass percentage relative to the total absolutely dry fibers (the total absolutely dry fibers refer to plant fibers used in the papermaking process, and consist of the natural color softwood pulp, the nano-cellulose and the micro-nano bamboo powder), 3-10% of nano-cellulose and 55-75% of the micro-nano bamboo powder are mixed and defibered for 5-10 min, then adding 0.01-1% of hydrophobic agent and 1-3% of wet strength agent by mass percentage relative to the absolutely dry pulp (consist of the natural color softwood pulp and the micro-nano bamboo powder), and finally preparing the quantitative 30-80 g/m by adopting a papermaking method 2 The paper-based mulching film.
The beating degree of the natural color softwood pulp is 30-60 DEG SR.
The above nanocellulose is one or both of nanofibril (CNF) and microfibrillated cellulose (MFC).
The hydrophobic agent is one or two of Alkyl Ketene Dimer (AKD), Alkenyl Succinic Anhydride (ASA) and amino silicone oil.
The wet strength agent is one of polyamide epichlorohydrin (PAE), dialdehyde starch (DAS) and Polyethyleneimine (PEI).
The invention has the beneficial effects that:
(1) the paper-based mulching film obtained by the invention has the tensile dry strength of 3.2 KN/m and the tensile wet strength of 1.1 KN/m, and the strength requirements of the ground mulching film of the common greenhouse are that the dry strength is more than or equal to 1.5 KN/m and the wet strength is more than or equal to 0.5 KN/m, so that the paper-based mulching film completely meets the requirements.
(2) The Cobb value of the paper-based mulching film obtained by the invention is 17.15 g/m 2 And has excellent hydrophobic property.
(3) The raw materials used in the invention can be completely degraded into carbon dioxide and water, micro-plastics are not generated, and the method is simple to operate, environment-friendly and easy for industrial batch production.
Drawings
FIG. 1 shows the relationship between different formulations and the tensile strength of mulching film paper.
FIG. 2 is a relationship between different formulations and the Cobb value of mulching film paper.
In the figure, the mulching film paper 1 is mainly prepared by taking natural color softwood pulp and nano fibrils as raw materials and using a papermaking method; the mulching film paper 2 is prepared by mainly taking natural color softwood pulp, bamboo powder and nano-fibril as raw materials and using a papermaking method; the mulching paper 3 is prepared from natural color softwood pulp, micro-nano bamboo powder and nano fibrils serving as raw materials by a papermaking method.
Detailed Description
The principle of the method of the invention is as follows: the natural color softwood pulp and the nanocellulose are used as raw materials, and the mulching film paper prepared by the papermaking method has excellent degradability, but poor water resistance and high cost. After the bamboo powder is added into the original formula, the cost of the obtained mulching film paper is reduced, but the tensile strength and the hydrophobic property of the obtained mulching film paper are lower than the standard of the ground mulching film of the common greenhouse. The bamboo powder in the formula is subjected to chemical-mechanical treatment to obtain the micro-nano bamboo powder. More hydroxyl groups are exposed on the surface of the micro-nano bamboo powder, so that the bonding strength between the softwood pulp and the micro-nano bamboo powder is obviously improved. Meanwhile, the micro-nano bamboo powder with a sheet structure is added, so that the lignin content of the mulching film paper is increased, the roughness of the surface of the paper is gradually reduced, and the path of liquid permeating into the paper is increased, thereby improving the water resistance of the mulching film paper.
The following further illustrates and contrasts the conventional processes and the present invention with reference to specific examples, including but not limited to examples.
One, the following examples 1-3 are illustrative of the effect of different formulations on tensile strength and hydrophobic properties of mulch paper.
Example 1
(1) Preparing a paper-based mulching film: mixing 7% natural color softwood pulp with beating degree of 30 ° SR and 3% CNF, defibering for 5min, and adding 0.08% alkyl group relative to oven dry pulpKetene Dimer (AKD) and 1% of polyamide epichlorohydrin (PAE), and finally, the preparation quantitative of the mixture is 60 g/m by adopting a papermaking method 2 The paper-based mulching film.
(2) And (3) testing: cutting 15 × 150 mm sample after the geomembrane paper is subjected to constant temperature and humidity for 24 h under the conditions of 23 + -1 ℃ and 50 + -2% of relative humidity, and setting the parameters to be quantitative 60 g/m by adopting a TTM-300 computer tensile testing machine 2 The nip distance was 100 mm, and the loading speed was 200 mm/min, at which time the tensile dry strength of the mulching paper was measured (applicable to the test of the tensile dry strength of the mulching paper in each example described below). The dry tensile strength of the obtained mulching film paper in this example was 1.5 KN/m.
The preparation method comprises the steps of cutting a 15 multiplied by 150 mm sample after the geomembrane paper is subjected to constant temperature and humidity for 24 hours under the conditions of 23 +/-1 ℃ and 50 +/-2% of relative humidity, completely soaking the sample in distilled water for 1 hour, and then adopting a TTM-300 computer tensile testing machine with the parameter set to be quantitative 60 g/m 2 The nip distance was 100 mm, and the loading speed was 200 mm/min, at which time the tensile wet strength of the resulting mulch paper was tested (applicable to the tensile wet strength test of mulch paper in each example described below). The tensile wet strength of the obtained mulching film paper is 0.4 KN/m.
The Cobb value of the mulching film paper obtained in the example is 27.62 g/m according to the measurement of GB/T1540- 2 。
Example 2
(1) Preparing a paper-based mulching film: mixing 7% of natural color softwood pulp with a beating degree of 30 DEG SR and 3% of CNF, defibering for 5min, adding 0.08% of Alkyl Ketene Dimer (AKD), 0.5% of amino silicone oil and 1% of polyamide epichlorohydrin (PAE) in percentage by mass relative to oven-dried pulp, and finally preparing the natural color softwood pulp with a quantitative of 60 g/m by adopting a papermaking method 2 The paper-based mulching film.
(2) And (3) testing: the dry tensile strength of the obtained mulching paper in this example was 1.9 KN/m, the wet tensile strength was 0.6 KN/m, and the Cobb value was 25.35 g/m 2 。
Example 3
(1) Preparing a paper-based mulching film: mixing 97% natural color softwood pulp with beating degree of 30 ° SR and 3% CNF, defibering for 5min, and addingAdding 0.08 percent of Alkyl Ketene Dimer (AKD), 0.5 percent of Alkenyl Succinic Anhydride (ASA) and 1 percent of polyamide epichlorohydrin (PAE) by mass percent relative to the absolute dry pulp, and finally preparing the paper-making method with the quantitative of 60 g/m 2 The paper-based mulching film.
(2) And (3) testing: the dry tensile strength of the obtained mulching paper in this example was 1.7 KN/m, the wet tensile strength was 0.5 KN/m, and the Cobb value was 26.84 g/m 2 。
And conclusion one:
based on examples 1 to 3, it has been found that, in conventional papermaking formulations, the tensile dry strength of the mulch paper can be up to 1.9 KN/m, the tensile wet strength up to 0.6 KN/m and the Cobb value up to 25.35 g/m 2 。
Second, the following examples 4 to 6 are illustrations of the effect of adding bamboo powder on the tensile strength and hydrophobic properties of the mulch paper.
Example 4
(1) Preparing a paper-based mulching film: mixing 20% natural color softwood pulp with beating degree of 30 DEG SR, 3% CNF and 77% bamboo powder of 20 meshes, defibering for 5min, adding Alkyl Ketene Dimer (AKD) with mass percentage of 0.08% relative to absolute dry pulp, 0.5% amino silicone oil and 1% polyamide epichlorohydrin (PAE), and finally preparing the quantitative 60 g/m by adopting a papermaking method 2 The paper-based mulching film.
(2) And (3) testing: the dry tensile strength of the obtained mulching film paper is 1.0 KN/m, the wet tensile strength is 0.1 KN/m, and the Cobb value is 31.21 g/m 2 。
Example 5
(1) Preparing a paper-based mulching film: mixing 30% of unbleached softwood pulp with a beating degree of 30 DEG SR, 3% of CNF and 67% of 20-mesh bamboo powder, adding 0.08% of Alkyl Ketene Dimer (AKD), 0.5% of amino silicone oil and 1% of polyamide epichlorohydrin (PAE) in percentage by mass relative to oven-dried pulp, and finally preparing the natural softwood pulp with a quantitative of 60 g/m by adopting a papermaking method 2 The paper-based mulching film.
(2) And (3) testing: the dry tensile strength of the obtained mulching paper in this example was 1.1 KN/m, the wet tensile strength was 0.2 KN/m, and the Cobb value was 30.68 g/m 2 。
Example 6
(1) Preparing a paper-based mulching film: mixing 40% natural color softwood pulp with beating degree of 30 DEG SR, 3% CNF and 57% bamboo powder of 20 meshes, defibering for 5min, adding Alkyl Ketene Dimer (AKD) with mass percentage of 0.08% relative to absolute dry pulp, 0.5% amino silicone oil and 1% polyamide epichlorohydrin (PAE), and finally preparing the quantitative 60 g/m by adopting a papermaking method 2 The paper-based mulching film.
(2) And (3) testing: the obtained mulching paper has a dry tensile strength of 1.3 KN/m, a wet tensile strength of 0.3 KN/m, and a Cobb value of 29.53 g/m 2 。
And a second conclusion:
based on examples 4 to 6, it was found that the tensile dry strength of the paper can be up to 1.3 KN/m, the tensile wet strength of the paper can be up to 0.3 KN/m, and the Cobb value of the paper can be up to 29.53 g/m after the addition of bamboo powder to the formulation 2 Compared with the mulching film paper without the bamboo powder, the tensile strength and the hydrophobic property of the mulching film paper are reduced.
Third, the following examples 7 to 9 are to illustrate the effect of adding micro-nano bamboo powder on the tensile strength and the hydrophobic property of the mulching film paper.
Example 7
(1) Micro-nano bamboo powder preparation: accurately weighing 10 g of 20-mesh bamboo powder as raw material, adding 1% sodium hydroxide solution 1000 ml, shaking at 90 deg.C for 2 hr, washing to neutral to obtain 2% water suspension, and grinding with colloid mill for 2 times to obtain micro-nano bamboo powder (NBF) 1 ）。
(2) Preparing a paper-based mulching film: collecting 20% natural color softwood pulp with beating degree of 40 ° SR, 5% CNF, 75% NBF 1 Mixing, defibering for 10 min, adding Alkyl Ketene Dimer (AKD) 0.01 wt% and polyamide epichlorohydrin (PAE) 3 wt% relative to oven-dried pulp, and making into paper-making product with quantitative of 80 g/m 2 The paper-based mulching film.
(3) And (3) testing: the dry tensile strength of the obtained mulching paper in this example was 2.5 KN/m, the wet tensile strength was 0.9 KN/m, and the Cobb value was 20.69 g/m 2 。
Example 8
(1) Micro-nanoPreparing the bamboo powder: accurately weighing 10 g of 20 mesh bamboo powder as raw material, adding 3% sodium hydroxide solution 500 ml, shaking at 90 deg.C for 2 hr, washing to neutral to obtain 2% water suspension, and grinding with colloid mill for 2 times to obtain micro-nano bamboo powder (NBF) 2 ）。
(2) Preparing a paper-based mulching film: collecting natural color softwood pulp with beating degree of 30 ° SR at 40%, CNF at 3%, NBF at 57% 2 Mixing, defibering for 5min, adding Alkyl Ketene Dimer (AKD) 0.03 wt%, amino silicone oil 0.05 wt% and polyamide-epichlorohydrin (PAE) 1 wt% relative to oven-dried pulp, and making into paper-making product with quantitative of 60 g/m 2 The paper-based mulching film.
(3) And (3) testing: the obtained mulching paper has a dry tensile strength of 3.2 KN/m, a wet tensile strength of 1.1 KN/m, and a Cobb value of 17.15 g/m 2 。
Example 9
(1) Micro-nano bamboo powder preparation: accurately weighing 10 g of 20 mesh bamboo powder as raw material, adding 5% sodium hydroxide solution 100 ml, shaking at 90 deg.C for 2 hr, washing to neutral to obtain 2% water suspension, and grinding with colloid mill for 2 times to obtain micro-nano bamboo powder (NBF) 3 ）。
(2) Preparing a paper-based mulching film: taking 35% natural color softwood pulp with beating degree of 60 DEG SR, 10% CNF and 55% NBF 3 Mixing, defibering for 5min, adding Alkyl Ketene Dimer (AKD) 0.1 wt%, amino silicone oil 0.9 wt% and polyamide-epichlorohydrin (PAE) 2 wt% relative to oven-dried pulp, and making into paper-making product with quantitative content of 30 g/m 2 The paper-based mulching film.
(3) And (3) testing: the dry tensile strength of the obtained mulching film paper in this example was 2.8 KN/m, the wet tensile strength was 1.0 KN/m, and the Cobb value was 18.09 g/m 2 。
And conclusion three:
based on examples 7 to 9, the tensile dry strength of the mulching film paper can reach 3.2 KN/m at most, the tensile wet strength of the mulching film paper is 1.1 KN/m at most, and the Cobb value of the mulching film paper is 17.15 g/m at most after the micro-nano bamboo powder is added into the formula 2 Compared with the mulching film paper with the traditional formula, the tensile strength and the hydrophobic property of the mulching film paper are obviously improved, and the micro-nano bamboo powder is proved to play a certain tensile barrier effect.
The tensile strength test results of the mulching film papers obtained in examples 2, 6 and 8 are shown in fig. 1, the Cobb value test result is shown in fig. 2, the tensile strength of the mulching film paper added with the micro-nano bamboo powder is remarkably improved, and meanwhile, the excellent hydrophobic property is also shown.
Claims (5)
1. A preparation method of a paper-based mulching film is characterized by comprising the following steps:
micro-nano bamboo powder preparation: weighing 10-20 g of bamboo powder of 20-80 meshes as a raw material; adding 100 ml of sodium hydroxide solution with the mass concentration of 1-10%, and oscillating for 1-3 h at the constant temperature of 65-95 ℃;
washing the bamboo powder to be neutral, preparing aqueous suspension with the mass concentration of 1-3%, and circularly grinding for 1-5 times by using a colloid mill to obtain micro-nano bamboo powder;
preparing a paper-based mulching film: mixing natural color softwood pulp with the mass percentage of total absolute dry fibers being 20% -40%, nano cellulose with the mass percentage being 3% -10% and micro-nano bamboo powder with the mass percentage being 55% -75%, and defibering for 5-10 min; the total absolutely dry fiber consists of natural color softwood pulp, nano cellulose and micro-nano bamboo powder;
adding a hydrophobic agent and a wet strength agent in a mass percentage of 0.01-1% and 1-3% relative to the oven-dried pulp, wherein the oven-dried pulp consists of natural color softwood pulp and micro-nano bamboo powder;
the preparation quantitative by the paper-making method is 30-80 g/m 2 The paper-based mulching film.
2. The preparation method of the paper-based mulching film according to claim 1, wherein the beating degree of the natural color softwood pulp is 30-60 ° SR.
3. The method for preparing a paper-based mulching film according to claim 1, wherein the nanocellulose is one or both of nanofibrils and microfibrillated cellulose.
4. The preparation method of the paper-based mulching film according to claim 1, wherein the hydrophobic agent is one or two of alkyl ketene dimer, alkenyl succinic anhydride and amino silicone oil.
5. The preparation method of the paper-based mulching film according to claim 1, wherein the wet strength agent is one of polyamide epichlorohydrin, dialdehyde starch and polyethyleneimine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110708065.1A CN113355949B (en) | 2021-06-25 | 2021-06-25 | Preparation method of paper-based mulching film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110708065.1A CN113355949B (en) | 2021-06-25 | 2021-06-25 | Preparation method of paper-based mulching film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113355949A CN113355949A (en) | 2021-09-07 |
| CN113355949B true CN113355949B (en) | 2022-09-27 |
Family
ID=77536326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110708065.1A Active CN113355949B (en) | 2021-06-25 | 2021-06-25 | Preparation method of paper-based mulching film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113355949B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892444B (en) * | 2022-05-07 | 2023-05-09 | 南京林业大学 | Paper-based mulching film and preparation method and application thereof |
| CN115746576A (en) * | 2022-11-10 | 2023-03-07 | 湖南文理学院 | Green and environment-friendly agricultural mulching film and preparation method thereof |
| CN117758534A (en) * | 2023-12-25 | 2024-03-26 | 清远市腾皓生态农业有限公司 | Preparation method of bamboo fiber ecological environment-friendly mulching film |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757986B (en) * | 2014-01-02 | 2015-12-02 | 上海大学 | A kind of method utilizing bamboo fiber to prepare flexible transparent nano paper |
| CN110016217A (en) * | 2019-04-30 | 2019-07-16 | 封金财 | A kind of preparation method of degradable agricultural composite plastic mulch |
| CN112442922A (en) * | 2020-11-04 | 2021-03-05 | 江西中竹生物质科技有限公司 | Method for producing degradable mulching film paper by using bamboo pulp |
| CN112663396A (en) * | 2020-12-16 | 2021-04-16 | 江西中竹生物质科技有限公司 | Production process of paper mulching film |
| CN112982028B (en) * | 2021-03-15 | 2022-06-07 | 浙江理工大学 | Preparation method of biodegradable hydrophobic oilproof paper |
-
2021
- 2021-06-25 CN CN202110708065.1A patent/CN113355949B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113355949A (en) | 2021-09-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113355949B (en) | Preparation method of paper-based mulching film | |
| Tarrés et al. | Lignocellulosic nanofibers from triticale straw: The influence of hemicelluloses and lignin in their production and properties | |
| Srivastava et al. | Pretreatment of banana pseudostem fibre for green composite packaging film preparation with polyvinyl alcohol | |
| CN114622436B (en) | Method for enhancing mechanical properties of nano dialysis paper for high-resistance bacteria medical protection in environment-friendly manner | |
| Almeida et al. | Production of nanocellulose gels and films from invasive tree species | |
| EP0393825B1 (en) | Novel water-absorptive composite material and method for the preparation thereof | |
| CN101629398A (en) | Naturally degradative cotton linter plastic film and manufacture process thereof | |
| Adnan et al. | Properties of paper incorporated with nanocellulose extracted using microbial hydrolysis assisted shear process | |
| US20180346813A1 (en) | A ground cover mulch comprising minerals and functional agents | |
| CN109415152A (en) | Ethylene suitable for packaging removes material and its manufacturing method | |
| CN108289420B (en) | Ground cover mulch impregnated with supercritical fluid containing colorant | |
| EP3288367B1 (en) | A ground cover mulch comprising cellulose carbamate | |
| Jo et al. | Effect of Nanofibrillated Cellulose Made from Enzyme-pretreated Bamboo Pulp on Paper Strength. | |
| KR101010978B1 (en) | Method of Manufacturing an opaque paper using Genus Typha L. | |
| CN1327496A (en) | Method for accelerated degradation of mulch paper and mulch paper | |
| US11617311B2 (en) | Light-selective mulch | |
| CN107996233B (en) | Method for preparing environment-friendly bast fiber film by using lapping-papermaking combined method | |
| Yusron et al. | Preparation of high water-retention biodegradable kidney tray from rice straw pulp | |
| WO2016174620A1 (en) | A ground cover mulch comprising carbon fiber | |
| US20220073865A1 (en) | Mycelium-containing hybrid materials | |
| Ma et al. | Preparation and Characterization of Polydimethylsiloxane-based Paper Transparentizing Agent and its Application in Paper Coating. | |
| JP2007319093A (en) | Paper-made mulch, and method for producing the same | |
| JP2005133224A (en) | Biodegradable resin forming material and food container using the same | |
| KR20230165480A (en) | Coated paper comprising chitosan coating layer, and manufacturing method thereof | |
| CN117684411A (en) | Waterproof, corrosion-resistant and degradable plastic paper substitute 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |