CN115387153A - Full-coal-carbon waste humic acid paper-based functional degradable mulching film and preparation method thereof - Google Patents
Full-coal-carbon waste humic acid paper-based functional degradable mulching film and preparation method thereof Download PDFInfo
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- CN115387153A CN115387153A CN202211020008.5A CN202211020008A CN115387153A CN 115387153 A CN115387153 A CN 115387153A CN 202211020008 A CN202211020008 A CN 202211020008A CN 115387153 A CN115387153 A CN 115387153A
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- coal
- mulching film
- humic acid
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- degradable mulching
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- 239000002699 waste material Substances 0.000 title claims abstract description 42
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229920001131 Pulp (paper) Polymers 0.000 title claims abstract description 40
- 239000004021 humic acid Substances 0.000 title claims abstract description 40
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000000835 fiber Substances 0.000 claims abstract description 54
- 241000196324 Embryophyta Species 0.000 claims abstract description 40
- 239000003245 coal Substances 0.000 claims abstract description 38
- 239000000945 filler Substances 0.000 claims abstract description 32
- 239000003337 fertilizer Substances 0.000 claims abstract description 20
- 239000004009 herbicide Substances 0.000 claims abstract description 15
- 239000010881 fly ash Substances 0.000 claims abstract description 14
- 230000002363 herbicidal effect Effects 0.000 claims abstract description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011574 phosphorus Substances 0.000 claims abstract description 10
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 239000002002 slurry Substances 0.000 claims description 20
- 238000000227 grinding Methods 0.000 claims description 19
- 238000004537 pulping Methods 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 10
- 229920002401 polyacrylamide Polymers 0.000 claims description 10
- 239000005562 Glyphosate Substances 0.000 claims description 9
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 9
- 239000004202 carbamide Substances 0.000 claims description 9
- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical compound OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 claims description 9
- 229940097068 glyphosate Drugs 0.000 claims description 9
- 238000005422 blasting Methods 0.000 claims description 8
- YYRMJZQKEFZXMX-UHFFFAOYSA-L calcium bis(dihydrogenphosphate) Chemical group [Ca+2].OP(O)([O-])=O.OP(O)([O-])=O YYRMJZQKEFZXMX-UHFFFAOYSA-L 0.000 claims description 8
- 229910000389 calcium phosphate Inorganic materials 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 235000019691 monocalcium phosphate Nutrition 0.000 claims description 8
- DVEKCXOJTLDBFE-UHFFFAOYSA-N n-dodecyl-n,n-dimethylglycinate Chemical compound CCCCCCCCCCCC[N+](C)(C)CC([O-])=O DVEKCXOJTLDBFE-UHFFFAOYSA-N 0.000 claims description 8
- 238000010025 steaming Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 6
- 238000010298 pulverizing process Methods 0.000 claims description 5
- -1 cetyl amino Chemical group 0.000 claims description 4
- 239000005472 Bensulfuron methyl Substances 0.000 claims description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 2
- 229920001661 Chitosan Polymers 0.000 claims description 2
- 229920002907 Guar gum Polymers 0.000 claims description 2
- XMQFTWRPUQYINF-UHFFFAOYSA-N bensulfuron-methyl Chemical group COC(=O)C1=CC=CC=C1CS(=O)(=O)NC(=O)NC1=NC(OC)=CC(OC)=N1 XMQFTWRPUQYINF-UHFFFAOYSA-N 0.000 claims description 2
- 239000010883 coal ash Substances 0.000 claims description 2
- 238000009313 farming Methods 0.000 claims description 2
- 239000000665 guar gum Substances 0.000 claims description 2
- 229960002154 guar gum Drugs 0.000 claims description 2
- 235000010417 guar gum Nutrition 0.000 claims description 2
- 239000011268 mixed slurry Substances 0.000 claims 1
- 239000011259 mixed solution Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 238000002791 soaking Methods 0.000 claims 1
- 239000002689 soil Substances 0.000 abstract description 32
- 230000012010 growth Effects 0.000 abstract description 14
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- 235000015097 nutrients Nutrition 0.000 abstract description 5
- 230000002401 inhibitory effect Effects 0.000 abstract description 3
- 230000008635 plant growth Effects 0.000 abstract description 3
- 230000035558 fertility Effects 0.000 abstract description 2
- 244000005700 microbiome Species 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 19
- 229920003023 plastic Polymers 0.000 description 10
- 239000004033 plastic Substances 0.000 description 10
- 240000008042 Zea mays Species 0.000 description 9
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 9
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 9
- 235000005822 corn Nutrition 0.000 description 9
- 229910052700 potassium Inorganic materials 0.000 description 9
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 8
- 239000011591 potassium Substances 0.000 description 8
- 239000011734 sodium Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 229930002875 chlorophyll Natural products 0.000 description 5
- 235000019804 chlorophyll Nutrition 0.000 description 5
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 5
- 239000000618 nitrogen fertilizer Substances 0.000 description 5
- 102000003992 Peroxidases Human genes 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 108040007629 peroxidase activity proteins Proteins 0.000 description 4
- 239000010908 plant waste Substances 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 235000013311 vegetables Nutrition 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 235000010980 cellulose Nutrition 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229910052604 silicate mineral Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 244000198134 Agave sisalana Species 0.000 description 1
- 241000609240 Ambelania acida Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 102000016938 Catalase Human genes 0.000 description 1
- 108010053835 Catalase Proteins 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002686 phosphate fertilizer Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/02—Superphosphates
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/60—Biocides or preservatives, e.g. disinfectants, pesticides or herbicides; Pest repellants or attractants
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/16—Films or sheets; Webs; Fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- 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
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- 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
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Inorganic Chemistry (AREA)
- Plant Pathology (AREA)
- Fertilizers (AREA)
Abstract
The invention provides a full-coal-waste humic acid paper-based functional degradable mulching film and a preparation method thereof, wherein the preparation raw materials comprise the following components in parts by mass: 1 part of modified filler, 4 to 13 parts of plant fiber, 0.4 to 0.5 part of humate, 0.2 to 0.3 part of nitrogen-containing fertilizer, 0.2 to 0.3 part of phosphorus-containing fertilizer, 0.2 to 0.4 part of reinforcing agent, 0.1 to 0.2 part of softener and 0.001 to 0.005 part of herbicide; wherein the modified filler is a mixture of coal gangue, coal slime and fly ash. The full-coal-carbon waste degradable mulching film utilizes the humic acid paper-based function, the structure of the degradable mulching film is changed in the degradation process, the nutrient components in the degradable mulching film are released into soil, the growth and development of crops are promoted, meanwhile, the trace herbicide plays a role in inhibiting the growth of weeds, the filler part can adjust the volume weight of the soil, the pore structure of the soil is improved, and meanwhile, a good environment is created for soil microorganisms, so that the soil fertility is improved and the growth of plants is promoted.
Description
Technical Field
The invention belongs to the technical field of agricultural application, and particularly relates to a humic acid paper-based functional degradable mulching film prepared from all-coal-carbon waste and a preparation method thereof.
Background
The mulching film is an important agricultural production material, has the functions of warming, preserving soil moisture and the like, and can effectively improve the yield and the quality of crops. The usage amount and the coverage area of the mulching film are the first in the world in China. The data show that the film covering area of China can reach 3.3 hundred million acres and the using amount of the film covering area exceeds 200 million tons in 2024 years. But once praised as a white agricultural film for agricultural production, the film is the first culprit of field white pollution. Therefore, the development of the mulching film which can replace the white common mulching film and can achieve the degradation effect has great significance.
At present, with the increasing demand for energy, the discharge amount of coal gangue, coal slime and fly ash is correspondingly increased, and the environment is seriously influenced by a large amount of discharge. In agriculture, natural minerals have been used to produce mulching films in some applications. For example, the mulching film of the chinese patent CN107141671a uses natural minerals as fillers and is mixed with various celluloses to prepare the agricultural mulching film, and the cellulose of the mulching film has high cost and single function; the mulching film of the Chinese patent CN113308936B uses natural minerals as inorganic fibers to perform surface modification, and then is mixed with plant fibers to prepare the degradable agricultural mulching film by adopting a wet papermaking process.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the fully-coal-carbon waste humic acid paper-based functional degradable mulching film and the preparation method thereof.
The invention is realized by the following technical scheme:
a humic acid paper-based functional degradable mulching film prepared from all coal-carbon waste comprises the following preparation raw materials in parts by mass: 1 part of modified filler, 4 to 13 parts of plant fiber, 0.4 to 0.5 part of humate, 0.2 to 0.3 part of nitrogen-containing fertilizer, 0.2 to 0.3 part of phosphorus-containing fertilizer, 0.2 to 0.4 part of reinforcing agent, 0.1 to 0.2 part of softener and 0.001 to 0.005 part of herbicide; the modified filler is a mixture of coal gangue, coal slime and fly ash; wherein the 5-15 parts of plant fiber is calculated by oven-dried plant fiber.
Preferably, the mass ratio of the coal gangue to the coal slime to the coal ash is 3.
Preferably, the plant fiber is extracted from crop residues such as wheat straw, sisal, bagasse and corn stalks.
Preferably, the humate is one or two of potassium humate and sodium humate.
Preferably, the nitrogen-containing fertilizer is one or two of urea and polyacrylamide, and the phosphorus-containing fertilizer is calcium superphosphate.
Preferably, the enhancer is one or two of polyacrylamide, chitosan and guar gum.
Preferably, the softener is one or two of dodecyl dimethyl betaine, hexadecyl trimethyl ammonium bromide and hexadecyl amino acid.
Preferably, the herbicide is one or two of bensulfuron methyl and glyphosate.
The preparation method of the full-coal waste degradable mulching film by utilizing the humic acid paper base function comprises the following steps: pulping plant fibers to obtain plant fiber pulp, and mixing the plant fiber pulp, a modified filler, humate, a nitrogen-containing fertilizer, a phosphorus-containing fertilizer, a reinforcing agent, a softener and a herbicide to obtain mixed pulp; and concentrating the mixed pulping liquid, and then papermaking, tabletting and drying to obtain the full-coal-carbon waste degradable mulching film by utilizing the humic acid paper base function.
Preferably, the preparation method of the plant fiber slurry comprises the following steps: the agricultural residue is crushed, chemically treated, steamed for a short time, and then decompressed and exploded into slurry. The method comprises the following steps: pulverizing the residue of the farming crop into 3% Na 2 SO 3 And 3 percent of NaOH, and then instantaneously blasting at the steaming temperature of 190-215 ℃ and under the pressure of 1.3-1.5 MPa to obtain the plant fiber slurry.
Preferably, the preparation method of the modified filler comprises the following steps: the coal gangue, the coal slime and the fly ash are ground to about 50 meshes through mechanical grinding, and in the grinding process, the filler is continuously subjected to mechanical acting forces such as compression, shearing, grinding and the like, so that the particle size is reduced, the surface free energy is increased, the original structure is damaged, the chemical activity is improved, and the modified filler is obtained.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a full-coal-carbon waste degradable mulching film utilizing a humic acid paper base function, which takes coal gangue, coal slime, fly ash, plant fiber, humate, nitrogenous fertilizer, phosphorus-containing fertilizer and herbicide as main raw materials. After the mulching film is degraded, the used raw materials can be directly utilized by soil or vegetation, wherein the high-content organic matter in the coal gangue, N, P, K, zn, cu, co, mn and other elements can improve the soil and provide nutrients for crops. The coal slime is a semi-solid with high viscosity and high water-holding capacity, is thin and soft, on one hand, the problems of ash and slag falling and the like of the full-coal-carbon waste degradable mulching film by utilizing the humic acid paper base function in the using process are solved, on the other hand, a certain water retention and locking capacity is provided for the mulching film, and the problem of short water shortage of plants caused by weather drying can be solved. The fly ash, as a mineral containing silicate minerals and carbon particles, has the characteristics of looseness, porosity, large specific surface area, water retention, good air permeability and the like, is not possessed by silicate minerals of soil, can improve the soil structure, increase the porosity, further improve the diffusion of air and solution in the soil, and adjust the temperature and the humidity of the soil, thereby obviously improving the physical properties of the clay soil. In the preparation process of the mulching film, the selected plant fibers can reduce the hardness and strength of the mulching film, so that the mulching film has certain ductility, more importantly, the natural plant fibers can be completely degraded under the action of the nature, and the aims of recycling waste resources and protecting the environment are fulfilled. The humate is used as a natural polymer material with high biological activity, has good biological stimulator effect and antibacterial effect, and improves the utilization rate of nutrients by plants. The mulching film is added with the nitrogenous fertilizer and the phosphorus-containing fertilizer, and in the using process of the mulching film, the fertilizer can enter soil, can provide the nitrogenous fertilizer and the phosphorus fertilizer for the growth of crops, and promotes the growth of the crops. A small amount of herbicide is also added into the mulching film, and the small amount of herbicide acts on the soil surface when the mulching film is used, so that the growth of weeds can be inhibited. The full-coal-carbon waste degradable mulching film utilizes the humic acid paper-based function, the structure of the degradable mulching film is changed in the degradation process, the nutrient components in the degradable mulching film are released into soil, the growth and development of crops are promoted, meanwhile, the trace herbicide plays a role in inhibiting the growth of weeds, the filler part can adjust the volume weight of the soil, the pore structure of the soil is improved, and meanwhile, a good environment is created for soil microorganisms, so that the soil fertility is improved and the growth of plants is promoted. The plastic mulching film is expected to solve the problems of plastic mulching film, frequent use of chemical fertilizer, waste of human resources and the like at the source, eliminate the harm of plastic residual films, save the step of recycling the mulching film and achieve the purposes of saving cost, improving efficiency and improving efficiency.
Furthermore, the invention adopts the fiber in the crop residues, and the crop residues are used as a natural, pollution-free and degradable substance, have rich sources and large fiber content, and can greatly improve the use value of the crop residues by effective utilization.
Furthermore, the urea is suitable for various soils and plants, is easy to store, is convenient to use, has small destructive effect on the soils, is suitable for various crops and soils, has the effect of improving alkaline soil, can reduce the loss of nitrogen when being mixed with a nitrogen fertilizer, and promotes the germination, rooting, sub-planting and fructification of the plants.
Furthermore, the glyphosate is used as a non-selective and residue-free biocidal herbicide, is very effective to perennial rooted weeds, and can well inhibit the growth of weeds by being added in a trace amount in the process of preparing the mulching film.
The preparation method is simple and low in cost.
Furthermore, mechanical modification is adopted, in the grinding process, the filler is continuously subjected to mechanical acting forces such as compression, shearing, grinding and the like, so that the particle size is reduced, the surface free energy is increased, and the chemical activity is improved.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The invention relates to a preparation method of a full-coal-carbon waste degradable mulching film with humic acid paper base function, which comprises the steps of slightly chemically treating fiber slurry with agricultural residues as main raw materials, steaming for a short time, then carrying out pressure release blasting to form slurry, mixing with prepared modified papermaking fillers, additives and other substances, papermaking, paper pressing and drying to obtain the full-coal-carbon waste degradable mulching film with the humic acid paper base function.
Example 1
1) 1kg of fillers of coal gangue, coal slime and fly ash are mixed and weighed according to the ratio of 3;
2) Pulverizing 5kg corn stalk (dry weight), and adding Na 2 SO 3 And 3% by weight of NaOH, then steaming at 190 deg.CInstantaneous blasting at 1.30MPa for 4 min; making 20kg of fiber slurry; wherein, the pulping rate of the cornstalks is about 85 percent, namely the fiber amount in 20kg of fiber pulp of the embodiment is 4.25kg;
3) Grinding the blasted fiber pulp into pulp by using a high-consistency disc grinder, and modifying the activated filler according to the mass ratio: fiber slurry: potassium humate: urea: calcium superphosphate: polyacrylamide: dodecyl dimethyl betaine: the glyphosate is mixed according to the mass ratio of 1;
4) And concentrating the mixed pulping liquid, and then papermaking, tabletting and drying to obtain the full-coal-carbon waste degradable mulching film by utilizing the humic acid paper base function.
Example 2
1) 1kg of fillers of coal gangue, coal slime and fly ash are mixed and weighed according to the ratio of 3;
2) Crude grinding 7kg of corn stalks (dry weight) to 3% Na 2 SO 3 And 3% NaOH, then steaming at 195 ℃ under 1.35MPa for 4min, instantaneously blasting; making 22kg of fiber slurry; wherein, the pulping rate of the cornstalks is about 85 percent, namely the fiber amount in 22kg of fiber pulp of the embodiment is 5.95kg;
3) Grinding the blasted fiber pulp into pulp by using a high-consistency disc grinder, and modifying the activated filler according to the mass ratio: fiber slurry: potassium humate: urea: calcium superphosphate: polyacrylamide: dodecyl dimethyl betaine: mixing the glyphosate with the following components in a mass ratio of 1;
4) And concentrating the mixed pulping liquid, and then carrying out papermaking, tabletting and drying to obtain the full-coal-waste humic acid paper-based functional degradable mulching film.
Example 3
1) 1kg of fillers of coal gangue, coal slime and fly ash are mixed and weighed according to the ratio of 3;
2) Pulverizing 9kg corn stalk (dry weight), and adding Na 2 SO 3 And 3% NaOH, then steaming at 200 ℃ under 1.4MPa for 4min, instantaneously blasting; 24kg of fiber slurry was prepared; wherein, the pulping rate of the corn stalks is about 85 percent, namely the fiber amount in 24kg of fiber pulp of the embodiment is 7.65kg;
3) Grinding the blasted fiber pulp into pulp by using a high-consistency disc grinder, and modifying the activated filler according to the mass ratio: fiber slurry: potassium humate: urea: calcium superphosphate: polyacrylamide: dodecyl dimethyl betaine: the glyphosate is mixed according to the mass ratio of 1;
4) And concentrating the mixed pulping liquid, and then carrying out papermaking, tabletting and drying to obtain the full-coal-waste humic acid paper-based functional degradable mulching film.
Example 4
1) 1kg of fillers of coal gangue, coal slime and fly ash are mixed and weighed according to the ratio of 3;
2) Pulverizing 11kg of corn stalk (dry weight), and adding Na 2 SO 3 And 3 percent of NaOH, and then steaming at the temperature of 205 ℃ and under the pressure of 1.45MPa for 4min, and instantaneously blasting; 26kg of fiber slurry with the solid content of 85 percent is prepared; wherein, the pulping rate of the corn stalks is about 85 percent, namely the fiber amount in 26kg of fiber pulp of the embodiment is 9.35kg;
3) Grinding the blasted fiber pulp by using a high-consistency disc grinder, and modifying activated fillers according to the mass ratio: fiber slurry: potassium humate: urea: calcium superphosphate: polyacrylamide: dodecyl dimethyl betaine: mixing the glyphosate with a mass ratio of 1;
4) And concentrating the mixed pulping liquid, and then papermaking, tabletting and drying to obtain the full-coal-carbon waste degradable mulching film by utilizing the humic acid paper base function.
Example 5
1) 1kg of fillers of coal gangue, coal slime and fly ash are mixed and weighed according to the ratio of 3 to 1, and are ground to about 50 meshes through mechanical grinding, so that the surface free energy is increased through mechanical force, and the chemical activity grinding is improved to prepare the modified activated fillers;
2) Crude grinding of 13kg corn stalks (dry weight) to 3% Na 2 SO 3 And 3 percent of NaOH, and then instantaneously blasting at the steaming temperature of 210 ℃ and under the pressure of 1.5MPa for 4 min; 28kg of fiber slurry was made; wherein, the pulping rate of the cornstalks is about 85 percent, namely the fiber amount in the 28kg fiber pulp of the embodiment is 11.05kg;
3) Grinding the blasted fiber pulp into pulp by using a high-consistency disc grinder, and modifying the activated filler according to the mass ratio: fiber sizing agent: potassium humate: urea: calcium superphosphate: polyacrylamide: dodecyl dimethyl betaine: the glyphosate is mixed according to the mass ratio of 1;
4) And concentrating the mixed pulping liquid, and then papermaking, tabletting and drying to obtain the full-coal-carbon waste degradable mulching film by utilizing the humic acid paper base function.
Example 6
1) 1kg of fillers of coal gangue, coal slime and fly ash are mixed and weighed according to the ratio of 3 to 1, and are ground to about 50 meshes through mechanical grinding, so that the surface free energy is increased through mechanical force, and the chemical activity grinding is improved to prepare the modified activated fillers;
2) Coarse grinding 15kg of corn stalks (dry weight) and then adding Na at 3% 2 SO 3 And 3% NaOH, then steamed at 215 ℃ under 1.5MPa pressure for 4min, instantaneously blasted; 30kg of fiber slurry was prepared; wherein, the pulping rate of the cornstalks is about 85 percent, namely the fiber amount in 30kg of fiber pulp of the embodiment is 12.75kg;
3) Grinding the blasted fiber pulp into pulp by using a high-consistency disc grinder, and modifying the activated filler according to the mass ratio: fiber slurry: potassium humate: urea: calcium superphosphate: polyacrylamide: dodecyl dimethyl betaine: mixing the glyphosate with a mass ratio of 1;
4) And concentrating the mixed pulping liquid, and then papermaking, tabletting and drying to obtain the full-coal-carbon waste degradable mulching film by utilizing the humic acid paper base function.
The performance of the all-coal-carbon waste is tested by using the humic acid paper-based functional degradable mulching film, a blank group is a mulching-film-free mode, the soil is covered by using the humic acid paper-based functional degradable mulching film and the traditional plastic mulching film aiming at the all-coal-carbon waste prepared in the embodiments 1 to 6, and the influence conditions of different types of mulching films on the soil and plants are tested and explored.
The experimental results are shown below:
1) The temperature of the all-coal-char waste prepared in examples 1 to 6 at 5cm depth in soil was measured using the humic acid paper-based functional degradable mulching film and the conventional plastic mulching film at the same time in the same environment in spring in the northwest, and the specific experimental results are shown in table 1.
It can be seen from table 1 that the soil temperature of the example group is similar to that of the control group, and the soil temperature and entropy-increasing effects are achieved, so that the heat-insulating capability of the degradable mulching film of the total coal-char waste utilizing the humic acid paper-based function on the soil and the heat-insulating capability of the traditional plastic mulching film on the soil are obviously affected, but the paper-based mulching film absorbs heat relatively more easily, so that the heat-insulating and water-retaining capabilities are better.
TABLE 1 soil temperature after mulching
| Group/time | 3:00 | 7:00 | 11:00 | 15:00 | 17:00 | 21:00 |
| Blank group | 16℃ | 17℃ | 21℃ | 22℃ | 22℃ | 20℃ |
| Control group | 20℃ | 20℃ | 23℃ | 25℃ | 25℃ | 23℃ |
| Example 1 | 24℃ | 25℃ | 27℃ | 27℃ | 26℃ | 24℃ |
| Example 2 | 22℃ | 25℃ | 27℃ | 26℃ | 25℃ | 24℃ |
| Example 3 | 22℃ | 24℃ | 26℃ | 25℃ | 24℃ | 22℃ |
| Example 4 | 21℃ | 23℃ | 25℃ | 25℃ | 23℃ | 22℃ |
| Example 5 | 21℃ | 23℃ | 24℃ | 23℃ | 22℃ | 22℃ |
| Example 6 | 20℃ | 23℃ | 24℃ | 24℃ | 23℃ | 21℃ |
2) In the same spring environment in northwest, the influence of the full-coal-based waste prepared in examples 1 to 6 on the chlorophyll content of the green vegetables by using the humic acid paper-based functional degradable mulching film and the conventional plastic mulching film was tested, and specific experimental results are shown in table 2.
It can be seen from table 2 that the chlorophyll content shows a tendency of increasing first and then decreasing, which is caused by the fact that the plants begin to age when the plants grow to a certain stage, and the chlorophyll content corresponding to each stage in examples 1 to 6 is higher than that of the two control groups, which indicates that the all-coal-carbon waste humic acid paper-based functional degradable mulching film in examples 1 to 6 has a certain promotion effect on chlorophyll synthesis by the synergistic cooperation of the nitrogen fertilizer, the phosphate fertilizer, the potassium fertilizer and the trace elements released by degradation in the degradable mulching film, and is beneficial to plant growth.
TABLE 2 Effect of the different examples on the chlorophyll content of green vegetables
3) In the same spring environment in northwest, the influence of the all-coal-based waste prepared in examples 1 to 6 on the catalase activity of green vegetables was tested by using the humic acid paper-based functional degradable mulching film and the conventional plastic mulching film, and the specific experimental results are shown in table 3.
As can be seen from Table 3, although the activity of the green vegetable peroxidase is influenced by the growth cycle and tends to increase in the early stage and decrease in the later stage, the peroxidase activity in the plants of examples 1 to 6 is significantly higher in the same period as that of the blank group in examples 1 to 6, which shows that the nutrient components degraded by the mulching films of examples 1 to 6 promote the synthesis of the plant peroxidase activity.
TABLE 3 Effect of the different examples on peroxidase Activity
4) In the same environment in spring in northwest, the influence of the all-coal-based waste prepared in examples 1 to 6 on the growth of weeds by using the humic acid paper-based functional degradable mulching film and the conventional plastic mulching film was tested, and specific experimental results are shown in table 4.
As can be seen from table 4, the growth of the weeds is influenced by the added herbicides, and shows a slow growth trend, because the added herbicides are small in amount, the weeds can only play a role in inhibiting the growth of the weeds, and the inhibition effect of the weeds is weakened due to the influence of all-coal-carbon waste in the degradation of the degradable mulching film by utilizing the humic acid paper-based function, but the inhibition effect still has stronger advantage compared with the traditional plastic mulching film.
TABLE 4 Effect of different examples on weed growth
The present invention is described in detail with reference to the above embodiments, and those skilled in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. The degradable mulching film with the humic acid paper-based function and made of all-coal-carbon waste is characterized by comprising the following preparation raw materials in parts by mass: 1 part of modified filler, 4 to 13 parts of plant fiber, 0.4 to 0.5 part of humate, 0.2 to 0.3 part of nitrogen-containing fertilizer, 0.2 to 0.3 part of phosphorus-containing fertilizer, 0.2 to 0.4 part of reinforcing agent, 0.1 to 0.2 part of softener and 0.001 to 0.005 part of herbicide; wherein the modified filler is a mixture of coal gangue, coal slime and fly ash.
2. The full-coal-carbon waste humic acid paper-based functional degradable mulching film according to claim 1, wherein the plant fiber is fiber extracted from agricultural residues.
3. The full-coal-waste humic acid paper-based functional degradable mulching film according to claim 1, wherein the nitrogen-containing fertilizer is one or two of urea and polyacrylamide, and the phosphorus-containing fertilizer is calcium superphosphate.
4. The all-coal-carbon waste degradable mulching film utilizing the humic acid paper base function according to claim 1 is characterized in that the mass ratio of coal gangue, coal slime and coal ash is 3.
5. The full-coal waste humic acid paper-based functional degradable mulching film according to claim 1, wherein the reinforcing agent is one or more of polyacrylamide, chitosan and guar gum.
6. The full-coal waste degradable mulching film utilizing the humic acid paper base function according to claim 1 is characterized in that the softener is one or two of dodecyl dimethyl betaine, cetyl trimethyl ammonium bromide and cetyl amino acid.
7. The all-coal-waste humic acid paper-based functional degradable mulching film according to claim 1, wherein the herbicide is one or two of bensulfuron methyl and glyphosate.
8. The method for preparing the full-coal-char waste degradable mulching film by utilizing the humic acid paper-based function according to any one of claims 1 to 7, is characterized by comprising the following steps: preparing plant fiber slurry, mixing the plant fiber slurry, modified filler, humate, nitrogen-containing fertilizer, phosphorus-containing fertilizer, reinforcing agent, softener and herbicide to obtain mixed slurry; and concentrating the mixed pulping liquid, and then papermaking, tabletting and drying to obtain the full-coal-carbon waste degradable mulching film by utilizing the humic acid paper base function.
9. The preparation method of the full-coal-carbon waste degradable mulching film utilizing the humic acid paper base function according to claim 8 is characterized in that the preparation method of the plant fiber slurry comprises the following steps: pulverizing the residue of the farming crop into powder and adding Na 2 SO 3 And pre-soaking in mixed solution of NaOH, steaming at 190-215 ℃ under the pressure of 1.3-1.5 MPa, and then releasing pressure and blasting to obtain the plant fiber slurry.
10. The preparation method of the full-coal-carbon waste degradable mulching film utilizing the humic acid paper base function according to claim 8 is characterized in that the preparation method of the modified filler comprises the following steps: the coal gangue, the coal slime and the fly ash are ground and crushed to be below 50 meshes through mechanical grinding, and the modified filler is obtained.
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