CN116905287A - Pulp molding material prepared from vinasse biomass and preparation method thereof - Google Patents
Pulp molding material prepared from vinasse biomass and preparation method thereof Download PDFInfo
- Publication number
- CN116905287A CN116905287A CN202310898276.5A CN202310898276A CN116905287A CN 116905287 A CN116905287 A CN 116905287A CN 202310898276 A CN202310898276 A CN 202310898276A CN 116905287 A CN116905287 A CN 116905287A
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- China
- Prior art keywords
- pulp molding
- reaction
- grains
- molding material
- sepiolite
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- 239000012778 molding material Substances 0.000 title claims abstract description 35
- 239000002028 Biomass Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title abstract description 19
- 239000004113 Sepiolite Substances 0.000 claims abstract description 56
- 229910052624 sepiolite Inorganic materials 0.000 claims abstract description 56
- 235000019355 sepiolite Nutrition 0.000 claims abstract description 56
- 238000000465 moulding Methods 0.000 claims abstract description 52
- 244000068988 Glycine max Species 0.000 claims abstract description 31
- 235000010469 Glycine max Nutrition 0.000 claims abstract description 31
- 239000011268 mixed slurry Substances 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000010902 straw Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 238000003756 stirring Methods 0.000 claims description 46
- 238000001035 drying Methods 0.000 claims description 45
- 240000008042 Zea mays Species 0.000 claims description 35
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 35
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 35
- 235000005822 corn Nutrition 0.000 claims description 35
- 239000008367 deionised water Substances 0.000 claims description 31
- 229910021641 deionized water Inorganic materials 0.000 claims description 31
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 30
- 238000001914 filtration Methods 0.000 claims description 28
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 24
- 238000005576 amination reaction Methods 0.000 claims description 24
- 229910000077 silane Inorganic materials 0.000 claims description 24
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 18
- 239000000843 powder Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000004537 pulping Methods 0.000 claims description 16
- 239000000413 hydrolysate Substances 0.000 claims description 15
- NWGKJDSIEKMTRX-AAZCQSIUSA-N Sorbitan monooleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O NWGKJDSIEKMTRX-AAZCQSIUSA-N 0.000 claims description 12
- LBTSNEJGMVFUEW-UHFFFAOYSA-N 2,2,3,3,4,4,5,5,6,8,8,8-dodecafluorooctoxy-dimethoxy-propylsilane Chemical compound FC(C(C(C(C(F)(F)CO[Si](OC)(OC)CCC)(F)F)(F)F)(F)F)CC(F)(F)F LBTSNEJGMVFUEW-UHFFFAOYSA-N 0.000 claims description 11
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 11
- 108010059892 Cellulase Proteins 0.000 claims description 11
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 11
- 229940106157 cellulase Drugs 0.000 claims description 11
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 11
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 9
- 244000046052 Phaseolus vulgaris Species 0.000 claims description 8
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 8
- 238000007873 sieving Methods 0.000 claims description 8
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 7
- 108010009736 Protein Hydrolysates Proteins 0.000 claims description 7
- 239000002270 dispersing agent Substances 0.000 claims description 7
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 7
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 6
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 6
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 6
- 238000007731 hot pressing Methods 0.000 claims description 6
- 238000010009 beating Methods 0.000 claims description 4
- 230000035484 reaction time Effects 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 3
- -1 sodium hexamethylphosphate Chemical compound 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 20
- 239000002994 raw material Substances 0.000 abstract description 8
- 238000012797 qualification Methods 0.000 abstract description 3
- 235000013339 cereals Nutrition 0.000 description 38
- 239000000047 product Substances 0.000 description 22
- 239000005022 packaging material Substances 0.000 description 10
- 229920002678 cellulose Polymers 0.000 description 6
- 239000001913 cellulose Substances 0.000 description 6
- 239000000123 paper Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 108090000623 proteins and genes Proteins 0.000 description 5
- 102000004169 proteins and genes Human genes 0.000 description 5
- 238000011160 research Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 229920002488 Hemicellulose Polymers 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 229920005610 lignin Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 108090000790 Enzymes Proteins 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229940088598 enzyme Drugs 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229920002749 Bacterial cellulose Polymers 0.000 description 1
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 108010059820 Polygalacturonase Proteins 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000005016 bacterial cellulose Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 108010093305 exopolygalacturonase Proteins 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
-
- 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
- D21H17/005—Microorganisms or enzymes
-
- 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
- D21H17/01—Waste products, e.g. sludge
-
- 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
- D21H17/11—Halides
-
- 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
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
-
- 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
- D21H17/53—Polyethers; Polyesters
-
- 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
- D21H17/62—Rosin; Derivatives thereof
-
- 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
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- 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
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
The invention discloses a pulp molding material prepared by using vinasse biomass and a preparation method thereof, comprising the following steps: (1) preparing a distilled grain pretreatment liquid; (2) preparing a mixed slurry; (3) preparing modified sepiolite; (4) preparing a pulp molding material. The pulp molding material provided by the invention uses the degradable materials as raw materials, effectively utilizes the distillers grains and the soybean dregs, solves the problem of comprehensive utilization of the distillers grains and the soybean dregs, and fills the modified sepiolite between the distillers grains fiber and the straw fiber, so that the pulp molding product has better compactness, dimensional stability and mechanical property, high tearing resistance and high product qualification rate, and is suitable for industrialized popularization.
Description
Technical Field
The invention belongs to the technical field of pulp molding products, and particularly relates to a pulp molding material prepared from vinasse biomass and a preparation method thereof.
Background
The pulp molding packaging material is packaging paper product with certain geometric cavity structure and buffering capacity, which is produced with primary plant fiber or waste paper regenerated fiber as main material and through mold molding, hot pressing, drying and other technological steps. In recent years, the material is low in price, convenient to process and wide in raw material source, and is widely applied to the packaging field as a substitute of foaming plastics.
At present, domestic researches on pulp molding packaging materials mainly concentrate on structural design, buffer mechanism, production process, design and development of molds and forming machines and the like, and the researches on mechanical properties of the pulp molding packaging materials are less. In the logistic transportation process, the pulp molding packaging material absorbs energy mainly through deformation of the pulp molding packaging material, and the excitation time is prolonged, so that the purpose of buffering is achieved. Thus, the tensile properties of pulp molded packaging materials are important indicators for measuring pulp molded packaging materials.
Since the field of application of pulp molded articles is quite wide, there is a great deal of emphasis on the product properties. These relatively special requirements are achieved by changing the formulation of pulp aids and fillers. At present, related fillers mainly have the functions of enhancing the strength and the shock resistance of products, improving the moistureproof and mildewproof performances of the products, enabling the products to have waterproof and oil-proof functions and the like, and more than one type of filler is usually required to be selected according to different use occasions of the products so as to produce the products meeting the requirements.
In the prior art, pulp molding takes reed, straw hulls, sugarcane, wheat straw, bamboo, wood and recycled paper as raw materials, and the raw materials are subjected to procedures of pulping, pulping and the like to be changed into fibers, suspended in water to form primary pulp, and are subjected to compression molding according to the characteristic requirements of the final product. The Chinese patent application No. 202211593958.7 discloses a pulp molding packaging material with bouquet and a preparation process and application thereof, wherein the pulp molding packaging material comprises the following raw materials: slurry, distilled grain residue extracting solution, montmorillonite, zinc oxide, regulator, silane coupling agent and ester solvent; the pulp molding packaging material has excellent mechanical property, high bursting strength and high product qualification rate; the distillers 'grains have the fragrance of wine, and the distillers' grains are used for manufacturing wine packages, so that waste utilization can be realized, the cost of enterprises can be reduced, and the characteristics of products of enterprises can be increased. However, the treatment of the distillers grains is only simple to extract filtrate and filter residues, a large amount of cellulose, hemicellulose and lignin in the distillers grains are tightly combined, and the combination capability of the distillers grains and other substances in the raw materials is limited, so that the mechanical property of the pulp molding product is limited.
The distillers 'grains are mixed solids remained after the distillers' grains are fermented, and the distillers 'grains contain a great amount of protein, starch and fat, and have similar nutrient substances as the distillers' grains but relatively low content. The distillers 'grains have the characteristics of high acidity and high moisture content, so that the distillers' grains are difficult to store, are easy to mold if being improperly managed, and have high processing cost. If the distilled spirit vinasse is directly discarded, the ecological environment is seriously polluted, and a large amount of resources are wasted. Therefore, the recycling of the vinasse becomes a focus of attention of many researchers, and is mainly used for producing protein feed, fertilizer, chemical products, bacterial cellulose, fuel and the like at present, wherein the research of the vinasse feed is the most popular, but the vinasse cannot completely replace the existing feed, and the vinasse is added into the existing feed according to a proper proportion as a main mode of feed utilization at present, so that the vinasse is low in consumption speed and easy to deteriorate.
In the prior art, the research on the use of the vinasse for the pulp molding products is still fresh, so that the research on the comprehensive utilization of the vinasse by using the vinasse for the pulp molding products has very important significance for improving the resource utilization rate and protecting the ecological environment under the background.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a pulp molding material prepared from vinasse biomass and a preparation method thereof, so as to solve the problem of comprehensive utilization rate of vinasse, and simultaneously, the sepiolite is modified by using soybean dregs, so that the sepiolite and vinasse fibers are better combined, and the obtained pulp molding product has good mechanical property and processing property, also has degradability, and is very in line with the requirements of the current times and the market.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a method for preparing a pulp molding material from distillers' grains biomass, comprising the steps of:
(1) Adding distilled grain into deionized water, then adding sodium hydroxide, stirring for reaction, adding dilute hydrochloric acid to adjust pH to neutrality after the reaction is completed, then adding cellulase and pectase for enzymolysis, and obtaining distilled grain pretreatment liquid after the enzymolysis is completed;
(2) Drying and crushing corn straw, sieving the corn straw with a 60-mesh sieve to obtain corn straw powder, adding the corn straw powder into the distilled grain pretreatment liquid in the step (1), then adding silane hydrolysate, pulping, and obtaining mixed slurry after pulping is completed;
(3) Adding soybean dregs into a phosphoric acid solution for constant temperature reaction, filtering and drying after the reaction is finished to obtain acid-heated modified soybean dregs, adding deionized water into the acid-heated modified soybean dregs, adding sodium dodecyl sulfate, amination sepiolite and citric acid, heating for reaction, filtering and drying after the reaction is finished to obtain modified sepiolite;
(4) Adding dispersant, span-80, dodecafluoroheptyl propyl trimethoxy silane, rosin size and modified sepiolite in the step (3) into the mixed slurry in the step (2), uniformly stirring, introducing into a mould, filtering water by a pulp molding machine, extruding, demoulding, drying, and hot-pressing for shaping to obtain the pulp molding material.
Preferably, in the step (1), the mass ratio of the distiller's grains to the deionized water to the sodium hydroxide is 100:1000-1500:20-40; the addition amount of the cellulase is 0.5-1% of the mass of the white spirit vinasse, and the addition amount of the pectase is 0.5-1% of the mass of the white spirit vinasse.
Preferably, the temperature of the stirring reaction in the step (1) is 50-60 ℃ and the time is 3-5h; the enzymolysis temperature is 25-30 ℃ and the enzymolysis time is 0.5-1h.
Preferably, the preparation method of the silane hydrolysate in the step (2) comprises the following steps: adding 5-10g of vinyl triethoxysilane into 100g of deionized water, and stirring for 1h at normal temperature to obtain the silane hydrolysate.
Preferably, in the step (2), the mass ratio of the corn stalk powder to the distilled grain pretreatment liquid to the silane hydrolysis liquid is 30-50:1000-1500:80-120; the beating temperature is 40-50deg.C, and the beating time is 30-50min.
Preferably, the preparation method of the amination sepiolite in the step (3) comprises the following steps: adding 10g of sepiolite into 150mL of deionized water, then adding 0.5g of gamma-aminopropyl triethoxysilane, stirring at 70 ℃ for reaction for 3 hours, filtering and drying after the reaction is finished to obtain the amination sepiolite; the mass concentration of the phosphoric acid solution is 5-10%; the mass ratio of the acid heat modified bean dregs to the sodium dodecyl sulfate to the amination sepiolite to the citric acid is 10-20:1-1.5:50-70:5-8.
Preferably, the temperature of the constant temperature reaction in the step (3) is 80-90 ℃ and the reaction time is 2-4h; the temperature of the heating reaction is 70-80 ℃ and the reaction time is 3-5h.
Preferably, the dispersing agent in the step (4) is one or more of carboxymethyl cellulose, sodium hexamethylphosphate and sodium dodecyl benzene sulfonate; the mass ratio of the mixed slurry to the dispersing agent to span-80 to the dodecafluoroheptyl propyl trimethoxy silane to the rosin size to the modified sepiolite is 1000:10-20:5-10:15-20:10-30:100-150; the stirring speed is 150-200r/min, the stirring time is 1-2h, and the temperature is 50-70 ℃.
Preferably, the mixed slurry in the step (4) is filtered until the water content is 60-70%, then is extruded and molded under the pressure of 5-15MPa, and then is demoulded to obtain a pulp molding wet blank, and then the pulp molding wet blank is placed in a drying box, dried for 4-5 hours at 80-90 ℃, transferred into a flat vulcanizing machine, and hot-pressed and shaped for 2-4 minutes at 6-8MPa at 100-120 ℃.
The invention also provides the pulp molding material prepared by the method.
Compared with the prior art, the invention has the following beneficial effects:
(1) According to the method for preparing the pulp molding material by using the vinasse biomass, firstly, the vinasse is subjected to alkali treatment, so that hydrogen bonds in a vinasse cellulose structure are destroyed, the bonding among hemicellulose, lignin and cellulose is reduced, the crystal structure is destroyed, meanwhile, the whole lignocellulose is loosened, the enzymolysis efficiency is improved, and then cellulase and pectinase are added for enzymolysis, so that lignin in the vinasse can be effectively degraded, in addition, the cellulose and the hemicellulose can be partially degraded, the crystal structure of the cellulose is destroyed, the bonding force among fibers is improved, and the strength of a pulp molding product is improved; then, the corn straw and the distillers 'grains pretreatment liquid are pulped together, so that short fibers in the distillers' grains and long fibers in the corn straw are uniformly mixed, the short fibers are easy to enrich on the long fibers, and the long fibers play a role of reinforcing bodies, so that the mechanical properties of the pulp molded product are also enhanced, and meanwhile, silane hydrolysate is added, so that the binding force between the short fibers and the long fibers is further improved; the soybean dregs are subjected to acid heat treatment, so that proteins and cellulose in the soybean dregs are unfolded and relaxed, hidden polar and nonpolar groups are exposed, and the water resistance of the soybean dregs is improved; the addition of the sodium dodecyl sulfate can cut the connection between the interior of protein molecules in the bean dregs and the protein molecules, reduce the molecular weight of the bean dregs, enable the bean dregs to be mixed with the amination sepiolite more uniformly, then react with the amination sepiolite under the action of citric acid, enable the bean dregs to be attached to the surface of the sepiolite, enable fibers in the bean dregs to be similar to vinasse fibers and straw fibers in structure, generate good bonding capacity and compatibility with the fibers, improve the mechanical property of a pulp molding product, improve the water resistance of the modified bean dregs, improve the water resistance of the pulp molding material, finally add a dispersing agent, span-80, dodecafluoroheptyl propyl trimethoxy silane and rosin gum into mixed slurry, enable the span-80 to serve as an emulsifying agent, enable the slurry to be more stable, enable all raw materials to be dispersed uniformly, and enable the obtained pulp molding product to have good mechanical property and water resistance.
(2) The pulp molding material provided by the invention uses the degradable materials as raw materials, effectively utilizes the distillers grains and the soybean dregs, solves the problem of comprehensive utilization of the distillers grains and the soybean dregs, and fills the modified sepiolite between the distillers grains fiber and the straw fiber, so that the pulp molding product has better compactness, dimensional stability and mechanical property, high tearing resistance and high product qualification rate, and is suitable for industrialized popularization.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The sepiolite is purchased from Shijia village spring Xin heat preservation building material limited company, and the mesh number is 800 mesh; the cellulase is purchased from Chongqing Tianrun biological products limited company, and the enzyme activity is 1 ten thousand U/g; the pectase is purchased from Shandong Siyang biotechnology limited company, and the enzyme activity is 3 ten thousand U/g; the content water quantity of the white spirit vinasse is 50-60%; the water content of the soybean dregs is 10-20%.
Example 1
A method for preparing a pulp molding material from distillers' grains biomass, comprising the steps of:
(1) Adding 1kg of white spirit lees into 12kg of deionized water, then adding 300g of sodium hydroxide, stirring for reaction at a temperature of 55 ℃ for 4 hours, adding 5% by mass of dilute hydrochloric acid after the reaction is completed to adjust the pH to be neutral, then adding 8g of cellulase and 8g of pectase for enzymolysis at a temperature of 28 ℃ for 1 hour, and obtaining white spirit lees pretreatment liquid after the enzymolysis is completed;
(2) Drying and crushing corn stalks, sieving the crushed corn stalks with a 60-mesh sieve to obtain corn stalk powder, adding 400g of corn stalk powder into 13kg of the distiller's grains pretreatment liquid in the step (1), adding 1kg of silane hydrolysate, pulping at the temperature of 45 ℃ for 40min, and obtaining mixed slurry after pulping is completed; the preparation method of the silane hydrolysate comprises the following steps: adding 8g of vinyl triethoxysilane into 100g of deionized water, and stirring for 1h at normal temperature to obtain silane hydrolysate;
(3) Adding 100g of soybean dregs into 800mL of 8% phosphoric acid solution by mass concentration, carrying out constant-temperature reaction at 85 ℃ for 3 hours, filtering and drying after the reaction is finished to obtain acid-heated modified soybean dregs, adding 15g of acid-heated modified soybean dregs into 800mL of deionized water, adding 1.3g of sodium dodecyl sulfate, 60g of amination sepiolite and 7g of citric acid, carrying out heating reaction at 75 ℃ for 4 hours, and filtering and drying after the reaction is finished to obtain modified sepiolite; the preparation method of the amination sepiolite comprises the following steps: adding 10g of sepiolite into 150mL of deionized water, then adding 0.5g of gamma-aminopropyl triethoxysilane, stirring at 70 ℃ for reaction for 3 hours, filtering and drying after the reaction is finished to obtain the amination sepiolite;
(4) Adding 150g of carboxymethyl cellulose, 80g of span-80, 170g of dodecafluoroheptyl propyl trimethoxy silane, 200g of rosin gum and 1.3kg of modified sepiolite in the step (3) into 10kg of mixed slurry in the step (2), uniformly stirring, introducing into a mould, filtering water to 65% by a pulp molding machine at the stirring speed of 170r/min and the stirring time of 2h at the temperature of 60 ℃, extruding and molding under the pressure of 10MPa, demolding to obtain a pulp molding wet blank, placing the pulp molding wet blank into a drying box, drying at the temperature of 85 ℃ for 4.5h, transferring into a flat vulcanizing machine, and hot-pressing and shaping at the temperature of 110 MPa for 3min to obtain the pulp molding material.
Example 2
A method for preparing a pulp molding material from distillers' grains biomass, comprising the steps of:
(1) Adding 1kg of distilled grain into 13kg of deionized water, then adding 300g of sodium hydroxide, stirring for reaction at a temperature of 55 ℃ for 4 hours, adding 5% by mass of dilute hydrochloric acid after the reaction is completed to adjust the pH to be neutral, then adding 7g of cellulase and 8g of pectase for enzymolysis at a temperature of 28 ℃ for 0.5 hour, and obtaining distilled grain pretreatment liquid after the enzymolysis is completed;
(2) Drying and crushing corn stalks, sieving the crushed corn stalks with a 60-mesh sieve to obtain corn stalk powder, adding 400g of corn stalk powder into 14kg of the distiller's grains pretreatment liquid in the step (1), adding 1kg of silane hydrolysate, pulping at the temperature of 45 ℃ for 40min, and obtaining mixed slurry after pulping; the preparation method of the silane hydrolysate comprises the following steps: adding 7g of vinyl triethoxysilane into 100g of deionized water, and stirring for 1h at normal temperature to obtain silane hydrolysate;
(3) Adding 100g of soybean dregs into 800mL of 8% phosphoric acid solution by mass concentration, carrying out constant-temperature reaction at 85 ℃ for 3 hours, filtering and drying after the reaction is finished to obtain acid-heated modified soybean dregs, adding 15g of acid-heated modified soybean dregs into 800mL of deionized water, adding 1.2g of sodium dodecyl sulfate, 60g of amination sepiolite and 6g of citric acid, carrying out heating reaction at 75 ℃ for 4 hours, and filtering and drying after the reaction is finished to obtain modified sepiolite; the preparation method of the amination sepiolite comprises the following steps: adding 10g of sepiolite into 150mL of deionized water, then adding 0.5g of gamma-aminopropyl triethoxysilane, stirring at 70 ℃ for reaction for 3 hours, filtering and drying after the reaction is finished to obtain the amination sepiolite;
(4) 150g of sodium hexamethylphosphate, 70g of span-80, 180g of dodecafluoroheptyl propyl trimethoxy silane, 200g of rosin gum and 1.3kg of modified sepiolite in the step (3) are added into 10kg of mixed slurry in the step (2), the mixed slurry is uniformly stirred and then is introduced into a mould, the stirring speed is 180r/min, the stirring time is 1.5h, the temperature is 60 ℃, the water is filtered to 65% by a pulp molding machine, the pulp molding is carried out under the pressure of 10MPa, the mould is removed, the pulp molding wet blank is obtained, the pulp molding wet blank is placed into a drying box, the pulp molding wet blank is dried for 4h at 85 ℃, and then is transferred into a plate vulcanizing machine, and the pulp molding material is obtained by hot press shaping for 3min at the temperature of 7MPa at the temperature of 110 ℃.
Example 3
A method for preparing a pulp molding material from distillers' grains biomass, comprising the steps of:
(1) Adding 1kg of white spirit lees into 10kg of deionized water, then adding 200g of sodium hydroxide, stirring for reaction at 50 ℃ for 5 hours, adding 5% by mass of dilute hydrochloric acid after the reaction is completed to adjust the pH to be neutral, then adding 5g of cellulase and 5g of pectase for enzymolysis at 25 ℃ for 1 hour, and obtaining white spirit lees pretreatment liquid after the enzymolysis is completed;
(2) Drying and crushing corn stalks, sieving the crushed corn stalks with a 60-mesh sieve to obtain corn stalk powder, adding 300g of corn stalk powder into 10kg of distilled grain pretreatment liquid in the step (1), adding 0.8kg of silane hydrolysate, pulping at 40 ℃ for 50min, and obtaining mixed slurry after pulping is completed; the preparation method of the silane hydrolysate comprises the following steps: adding 5g of vinyl triethoxysilane into 100g of deionized water, and stirring for 1h at normal temperature to obtain silane hydrolysate;
(3) Adding 100g of soybean dregs into 800mL of phosphoric acid solution with mass concentration of 5%, carrying out constant-temperature reaction at 80 ℃ for 4 hours, filtering and drying after the reaction is completed to obtain acid-heated modified soybean dregs, then adding 10g of acid-heated modified soybean dregs into 800mL of deionized water, adding 1g of sodium dodecyl sulfate, 50g of amination sepiolite and 5g of citric acid, carrying out heating reaction at 70 ℃ for 5 hours, and filtering and drying after the reaction is completed to obtain modified sepiolite; the preparation method of the amination sepiolite comprises the following steps: adding 10g of sepiolite into 150mL of deionized water, then adding 0.5g of gamma-aminopropyl triethoxysilane, stirring at 70 ℃ for reaction for 3 hours, filtering and drying after the reaction is finished to obtain the amination sepiolite;
(4) Adding 100g of sodium dodecyl benzene sulfonate, 50g of span-80, 150g of dodecafluoroheptyl propyl trimethoxy silane, 100g of rosin gum and 1kg of modified sepiolite in the step (3) into 10kg of mixed slurry in the step (2), uniformly stirring, introducing into a mold, filtering water to 60% by a pulp molding machine at the stirring speed of 150r/min and the stirring time of 2h at the temperature of 50 ℃, extruding and molding under the pressure of 5MPa, demolding to obtain a pulp molding wet blank, placing the pulp molding wet blank into a drying box, drying at the temperature of 80 ℃ for 5h, transferring into a flat vulcanizing machine, and hot-pressing and shaping at the temperature of 100 ℃ for 4min under the pressure of 6MPa to obtain the pulp molding material.
Example 4
A method for preparing a pulp molding material from distillers' grains biomass, comprising the steps of:
(1) Adding 1kg of distilled grain into 15kg of deionized water, then adding 400g of sodium hydroxide, stirring for reaction at the temperature of 60 ℃ for 3 hours, adding 5% by mass of dilute hydrochloric acid after the reaction is completed to adjust the pH to be neutral, then adding 10g of cellulase and 10g of pectase for enzymolysis at the temperature of 30 ℃ for 0.5 hour, and obtaining distilled grain pretreatment liquid after the enzymolysis is completed;
(2) Drying and crushing corn stalks, sieving the crushed corn stalks with a 60-mesh sieve to obtain corn stalk powder, adding 500g of corn stalk powder into 15kg of distilled grain pretreatment liquid in the step (1), adding 1.2kg of silane hydrolysate, pulping at 50 ℃ for 30min to obtain mixed slurry; the preparation method of the silane hydrolysate comprises the following steps: adding 10g of vinyl triethoxysilane into 100g of deionized water, and stirring for 1h at normal temperature to obtain silane hydrolysate;
(3) Adding 100g of soybean dregs into 800mL of 10% phosphoric acid solution by mass concentration, carrying out constant-temperature reaction at 90 ℃ for 2 hours, filtering and drying after the reaction is completed to obtain acid-heated modified soybean dregs, then adding 20g of acid-heated modified soybean dregs into 800mL of deionized water, adding 1.5g of sodium dodecyl sulfate, 70g of amination sepiolite and 8g of citric acid, carrying out heating reaction at 80 ℃ for 3 hours, and filtering and drying after the reaction is completed to obtain modified sepiolite; the preparation method of the amination sepiolite comprises the following steps: adding 10g of sepiolite into 150mL of deionized water, then adding 0.5g of gamma-aminopropyl triethoxysilane, stirring at 70 ℃ for reaction for 3 hours, filtering and drying after the reaction is finished to obtain the amination sepiolite;
(4) Adding 200g of carboxymethyl cellulose, 100g of span-80, 200g of dodecafluoroheptyl propyl trimethoxy silane, 300g of rosin gum and 1.5kg of modified sepiolite in the step (3) into 10kg of mixed slurry in the step (2), uniformly stirring, introducing into a mould, filtering water to 70% by a pulp molding machine at the stirring speed of 200r/min and the stirring time of 1h at the temperature of 70 ℃, extruding and molding under the pressure of 15MPa, demolding to obtain a pulp molding wet blank, placing the pulp molding wet blank into a drying box, drying at the temperature of 90 ℃ for 4h, transferring into a flat vulcanizing machine, and hot-press shaping at the temperature of 120 ℃ for 2min under the pressure of 8MPa to obtain the pulp molding material.
Comparative example 1
A method for preparing a pulp molding material from distillers' grains biomass, comprising the steps of:
(1) Drying and crushing corn straw, sieving with a 60-mesh sieve to obtain corn straw powder, adding 400g of corn straw powder and 1kg of white spirit lees into 13kg of deionized water, pulping at 45 ℃ for 40min to obtain mixed slurry;
(3) Adding 100g of soybean dregs into 800mL of 8% phosphoric acid solution by mass concentration, carrying out constant-temperature reaction at 85 ℃ for 3 hours, filtering and drying after the reaction is finished to obtain acid-heated modified soybean dregs, adding 15g of acid-heated modified soybean dregs into 800mL of deionized water, adding 1.3g of sodium dodecyl sulfate, 60g of amination sepiolite and 7g of citric acid, carrying out heating reaction at 75 ℃ for 4 hours, and filtering and drying after the reaction is finished to obtain modified sepiolite; the preparation method of the amination sepiolite comprises the following steps: adding 10g of sepiolite into 150mL of deionized water, then adding 0.5g of gamma-aminopropyl triethoxysilane, stirring at 70 ℃ for reaction for 3 hours, filtering and drying after the reaction is finished to obtain the amination sepiolite;
(4) Adding 150g of carboxymethyl cellulose, 80g of span-80, 170g of dodecafluoroheptyl propyl trimethoxy silane, 200g of rosin gum and 1.3kg of modified sepiolite in the step (3) into 10kg of mixed slurry in the step (2), uniformly stirring, introducing into a mould, filtering water to 65% by a pulp molding machine at the stirring speed of 170r/min and the stirring time of 2h at the temperature of 60 ℃, extruding and molding under the pressure of 10MPa, demolding to obtain a pulp molding wet blank, placing the pulp molding wet blank into a drying box, drying at the temperature of 85 ℃ for 4.5h, transferring into a flat vulcanizing machine, and hot-pressing and shaping at the temperature of 110 MPa for 3min to obtain the pulp molding material.
Comparative example 2
A method for preparing a pulp molding material from distillers' grains biomass, comprising the steps of:
(1) Adding 1kg of white spirit lees into 12kg of deionized water, then adding 300g of sodium hydroxide, stirring for reaction at a temperature of 55 ℃ for 4 hours, adding 5% by mass of dilute hydrochloric acid after the reaction is completed to adjust the pH to be neutral, then adding 8g of cellulase and 8g of pectase for enzymolysis at a temperature of 28 ℃ for 1 hour, and obtaining white spirit lees pretreatment liquid after the enzymolysis is completed;
(2) Drying and crushing corn stalks, sieving the crushed corn stalks with a 60-mesh sieve to obtain corn stalk powder, adding 400g of corn stalk powder into 13kg of the distiller's grains pretreatment liquid in the step (1), adding 1kg of silane hydrolysate, pulping at the temperature of 45 ℃ for 40min, and obtaining mixed slurry after pulping is completed; the preparation method of the silane hydrolysate comprises the following steps: adding 8g of vinyl triethoxysilane into 100g of deionized water, and stirring for 1h at normal temperature to obtain silane hydrolysate;
(3) Adding 150g of carboxymethyl cellulose, 80g of span-80, 170g of dodecafluoroheptyl propyl trimethoxy silane, 200g of rosin gum, 1.2kg of sepiolite and 300g of soybean dregs into 10kg of the mixed slurry obtained in the step (2), uniformly stirring, introducing into a mold, filtering water to 65% by a pulp molding machine at the stirring speed of 170r/min and the stirring time of 2h at the temperature of 60 ℃, extruding and molding under the pressure of 10MPa, demolding to obtain a pulp molding wet blank, placing the pulp molding wet blank into a drying box, drying at the temperature of 85 ℃ for 4.5h, transferring into a flat vulcanizing machine, and performing hot press shaping at the temperature of 110 ℃ for 3min at the pressure of 7MPa to obtain the pulp molding material.
The pulp molded articles prepared in examples 1 to 4 and comparative examples 1 to 2 were subjected to performance test, dry tensile strength was tested according to GB/T12914-2018 test for tensile Strength of paper and Board-constant speed stretching method, the sampling direction was longitudinal, the sample size was 250 mm. Times.15 mm, the stretching speed was 20mm/min, and the sample was placed in an environment at 23℃and relative humidity of 50% for 24 hours before the test; the tearing degree is measured by a paper tearing degree meter according to the national standard GB/T455-2002 'measurement of the tearing degree of paper and paper boards'; measurement of Water absorption: the sample of 50mm by 50mm is put into a baking oven of 50 ℃ and is baked for 24 hours and then taken out, and the mass m of the sample is called 1 Then the sample is put into tap water which is prepared in advance and is at 30 ℃ for soaking, the sample is taken out after 24 hours, naturally dried, and the water at the bottom of the sample is gently scraped by filter paper, so that the mass m of the sample is called 2 Calculate its water absorption, water absorption= (m 2 -m 1 )/m 1 X 100%; the test results are shown in Table 1 below:
TABLE 1
| Gram weight g/m 2 | Tensile strength kN/m 2 | Tearing degree mN | Water absorption percentage% | |
| Example 1 | 713 | 21.57 | 5819 | 1.17 |
| Example 2 | 735 | 21.05 | 5783 | 1.26 |
| Example 3 | 702 | 21.44 | 5806 | 1.21 |
| Example 4 | 728 | 20.86 | 5827 | 1.35 |
| Comparative example 1 | 716 | 16.15 | 4985 | 7.42 |
| Comparative example 2 | 754 | 16.83 | 5076 | 3.09 |
As can be seen from the table 1, the pulp molding material obtained by the preparation method provided by the invention has higher tensile strength, tearing degree and water resistance and has good application prospect.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A method for preparing a pulp molding material by using distillers' grains biomass, which is characterized by comprising the following steps:
(1) Adding distilled grain into deionized water, then adding sodium hydroxide, stirring for reaction, adding dilute hydrochloric acid to adjust pH to neutrality after the reaction is completed, then adding cellulase and pectase for enzymolysis, and obtaining distilled grain pretreatment liquid after the enzymolysis is completed;
(2) Drying and crushing corn straw, sieving the corn straw with a 60-mesh sieve to obtain corn straw powder, adding the corn straw powder into the distilled grain pretreatment liquid in the step (1), then adding silane hydrolysate, pulping, and obtaining mixed slurry after pulping is completed;
(3) Adding soybean dregs into a phosphoric acid solution for constant temperature reaction, filtering and drying after the reaction is finished to obtain acid-heated modified soybean dregs, adding deionized water into the acid-heated modified soybean dregs, adding sodium dodecyl sulfate, amination sepiolite and citric acid, heating for reaction, filtering and drying after the reaction is finished to obtain modified sepiolite;
(4) Adding dispersant, span-80, dodecafluoroheptyl propyl trimethoxy silane, rosin size and modified sepiolite in the step (3) into the mixed slurry in the step (2), uniformly stirring, introducing into a mould, filtering water by a pulp molding machine, extruding, demoulding, drying, and hot-pressing for shaping to obtain the pulp molding material.
2. The method of claim 1, wherein the mass ratio of distiller's grains to deionized water to sodium hydroxide in step (1) is 100:1000-1500:20-40; the addition amount of the cellulase is 0.5-1% of the mass of the white spirit vinasse, and the addition amount of the pectase is 0.5-1% of the mass of the white spirit vinasse.
3. The method for producing pulp molding material using distillers' grains biomass according to claim 1, wherein the temperature of the stirring reaction in step (1) is 50-60 ℃ for 3-5 hours; the enzymolysis temperature is 25-30 ℃ and the enzymolysis time is 0.5-1h.
4. The method for producing pulp molding material using distillers' grains biomass according to claim 1, wherein the method for producing the silane hydrolysate in the step (2) comprises the steps of: adding 5-10g of vinyl triethoxysilane into 100g of deionized water, and stirring for 1h at normal temperature to obtain the silane hydrolysate.
5. The method for preparing pulp molding material by using distillers 'grains biomass according to claim 1, wherein the mass ratio of the corn stalk powder, the distillers' grains pretreatment liquid and the silane hydrolysis liquid in the step (2) is 30-50:1000-1500:80-120; the beating temperature is 40-50deg.C, and the beating time is 30-50min.
6. The method for producing pulp molding material using distillers' grains biomass according to claim 1, wherein the method for producing the aminated sepiolite in the step (3) comprises the steps of: adding 10g of sepiolite into 150mL of deionized water, then adding 0.5g of gamma-aminopropyl triethoxysilane, stirring at 70 ℃ for reaction for 3 hours, filtering and drying after the reaction is finished to obtain the amination sepiolite; the mass concentration of the phosphoric acid solution is 5-10%; the mass ratio of the acid heat modified bean dregs to the sodium dodecyl sulfate to the amination sepiolite to the citric acid is 10-20:1-1.5:50-70:5-8.
7. The method for producing pulp molding material using distillers' grains biomass according to claim 1, wherein the isothermal reaction in the step (3) is performed at a temperature of 80-90 ℃ for a reaction time of 2-4 hours; the temperature of the heating reaction is 70-80 ℃ and the reaction time is 3-5h.
8. The method for producing pulp molding material by using distillers' grains biomass according to claim 1, wherein the dispersant in the step (4) is one or more of carboxymethyl cellulose, sodium hexamethylphosphate, and sodium dodecyl benzene sulfonate; the mass ratio of the mixed slurry to the dispersing agent to span-80 to the dodecafluoroheptyl propyl trimethoxy silane to the rosin size to the modified sepiolite is 1000:10-20:5-10:15-20:10-30:100-150; the stirring speed is 150-200r/min, the stirring time is 1-2h, and the temperature is 50-70 ℃.
9. The method for producing pulp molding material by using distillers' grains biomass according to claim 1, wherein the mixed slurry in the step (4) is filtered to have a water content of 60-70%, and is extruded and molded under a pressure of 5-15MPa, and then is demolded to obtain a pulp molding wet blank, and the pulp molding wet blank is placed in a drying oven, dried at 80-90 ℃ for 4-5 hours, transferred into a press vulcanizer, and hot pressed and shaped at 100-120 ℃ for 2-4 minutes under 6-8 MPa.
10. A pulp moulding material obtainable by the process according to any of claims 1-9.
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| CN109183496A (en) * | 2018-08-31 | 2019-01-11 | 安徽省新兴纸业有限责任公司 | A kind of preparation method of stretch-proof paper disc |
| CN110485210A (en) * | 2019-07-06 | 2019-11-22 | 周建兵 | A kind of puckery odor type cigarette tipping paper |
| CN110331624A (en) * | 2019-08-01 | 2019-10-15 | 江南大学 | A kind of material and preparation method of granular filler moulded paper pulp product |
| KR102276036B1 (en) * | 2021-05-25 | 2021-07-13 | 주식회사 파피루스 | Mulching paper containing natural preservatives |
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