CN113638261A - Mildew-proof paper and preparation method and application thereof - Google Patents
Mildew-proof paper and preparation method and application thereof Download PDFInfo
- Publication number
- CN113638261A CN113638261A CN202110811349.3A CN202110811349A CN113638261A CN 113638261 A CN113638261 A CN 113638261A CN 202110811349 A CN202110811349 A CN 202110811349A CN 113638261 A CN113638261 A CN 113638261A
- Authority
- CN
- China
- Prior art keywords
- mildew
- paper
- proof
- rutaceae
- pulp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 33
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 28
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 claims abstract description 26
- 241001093501 Rutaceae Species 0.000 claims abstract description 25
- 239000010902 straw Substances 0.000 claims abstract description 25
- 244000082946 Tarchonanthus camphoratus Species 0.000 claims abstract description 22
- 235000005701 Tarchonanthus camphoratus Nutrition 0.000 claims abstract description 22
- 241000208125 Nicotiana Species 0.000 claims abstract 5
- 238000000034 method Methods 0.000 claims description 34
- 229920001131 Pulp (paper) Polymers 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 13
- 238000010411 cooking Methods 0.000 claims description 12
- 238000004537 pulping Methods 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- PPASLZSBLFJQEF-RXSVEWSESA-M sodium-L-ascorbate Chemical compound [Na+].OC[C@H](O)[C@H]1OC(=O)C(O)=C1[O-] PPASLZSBLFJQEF-RXSVEWSESA-M 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 241000234314 Zingiber Species 0.000 claims description 8
- 235000006886 Zingiber officinale Nutrition 0.000 claims description 8
- 235000008397 ginger Nutrition 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 230000003449 preventive effect Effects 0.000 claims description 7
- 235000010378 sodium ascorbate Nutrition 0.000 claims description 7
- PPASLZSBLFJQEF-RKJRWTFHSA-M sodium ascorbate Substances [Na+].OC[C@@H](O)[C@H]1OC(=O)C(O)=C1[O-] PPASLZSBLFJQEF-RKJRWTFHSA-M 0.000 claims description 7
- 229960005055 sodium ascorbate Drugs 0.000 claims description 7
- 238000004061 bleaching Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 238000007639 printing Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 3
- 235000013305 food Nutrition 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 2
- 238000002803 maceration Methods 0.000 claims 3
- 241000196324 Embryophyta Species 0.000 abstract description 6
- 231100000252 nontoxic Toxicity 0.000 abstract description 4
- 230000003000 nontoxic effect Effects 0.000 abstract description 4
- 239000000123 paper Substances 0.000 description 56
- 244000061176 Nicotiana tabacum Species 0.000 description 23
- 230000000694 effects Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 7
- 238000002791 soaking Methods 0.000 description 6
- 239000001963 growth medium Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 241000228245 Aspergillus niger Species 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000003205 fragrance Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000844 anti-bacterial effect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 241000228212 Aspergillus Species 0.000 description 2
- 241000723346 Cinnamomum camphora Species 0.000 description 2
- 241001672694 Citrus reticulata Species 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 150000003868 ammonium compounds Chemical class 0.000 description 2
- 229960000846 camphor Drugs 0.000 description 2
- 229930008380 camphor Natural products 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 150000003112 potassium compounds Chemical class 0.000 description 2
- 150000003388 sodium compounds Chemical class 0.000 description 2
- CSMWJXBSXGUPGY-UHFFFAOYSA-L sodium dithionate Chemical group [Na+].[Na+].[O-]S(=O)(=O)S([O-])(=O)=O CSMWJXBSXGUPGY-UHFFFAOYSA-L 0.000 description 2
- 229940075931 sodium dithionate Drugs 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- AOSFMYBATFLTAQ-UHFFFAOYSA-N 1-amino-3-(benzimidazol-1-yl)propan-2-ol Chemical compound C1=CC=C2N(CC(O)CN)C=NC2=C1 AOSFMYBATFLTAQ-UHFFFAOYSA-N 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- 244000132059 Carica parviflora Species 0.000 description 1
- 235000014653 Carica parviflora Nutrition 0.000 description 1
- 241000207199 Citrus Species 0.000 description 1
- 235000005979 Citrus limon Nutrition 0.000 description 1
- 244000131522 Citrus pyriformis Species 0.000 description 1
- PQUCIEFHOVEZAU-UHFFFAOYSA-N Diammonium sulfite Chemical compound [NH4+].[NH4+].[O-]S([O-])=O PQUCIEFHOVEZAU-UHFFFAOYSA-N 0.000 description 1
- 240000005636 Dryobalanops aromatica Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 244000098338 Triticum aestivum Species 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 235000020971 citrus fruits Nutrition 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 235000015872 dietary supplement Nutrition 0.000 description 1
- 235000021186 dishes Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000008361 herbal raw material Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- DJEHXEMURTVAOE-UHFFFAOYSA-M potassium bisulfite Chemical compound [K+].OS([O-])=O DJEHXEMURTVAOE-UHFFFAOYSA-M 0.000 description 1
- 229940099427 potassium bisulfite Drugs 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000010259 potassium hydrogen sulphite Nutrition 0.000 description 1
- DPLVEEXVKBWGHE-UHFFFAOYSA-N potassium sulfide Chemical compound [S-2].[K+].[K+] DPLVEEXVKBWGHE-UHFFFAOYSA-N 0.000 description 1
- BHZRJJOHZFYXTO-UHFFFAOYSA-L potassium sulfite Chemical compound [K+].[K+].[O-]S([O-])=O BHZRJJOHZFYXTO-UHFFFAOYSA-L 0.000 description 1
- 235000019252 potassium sulphite Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000008786 sensory perception of smell Effects 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229960004793 sucrose Drugs 0.000 description 1
- 230000002195 synergetic effect Effects 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
- D21C3/022—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes in presence of S-containing compounds
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/22—Other features of pulping processes
- D21C3/222—Use of compounds accelerating the pulping processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/10—Bleaching ; Apparatus therefor
- D21C9/1084—Bleaching ; Apparatus therefor with reducing compounds
- D21C9/1089—Bleaching ; Apparatus therefor with reducing compounds with dithionites
-
- 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
- D21H17/02—Material of vegetable origin
-
- 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
- D21H17/12—Organo-metallic 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without 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
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Paper (AREA)
Abstract
The invention discloses mildew-proof paper and a preparation method and application thereof. The mildew-proof paper is prepared from the following raw materials: crop straw, camphorwood, rutaceae pericarp and tobacco stems. The mildew-proof paper can solve the problem of mildew of paper from the source by matching various plant raw materials, and is safe and nontoxic.
Description
Technical Field
The invention belongs to the technical field of papermaking, and particularly relates to mildew-proof paper and a preparation method and application thereof.
Background
Although the popularity of electronic books is higher and higher with the development of science and technology, paper books are still very important for students to study and paper book enthusiasts.
In the process of collecting paper books or using textbooks, the problems of yellowing, mildew, moth-eating and the like of paper often occur, and are particularly serious in southern areas with high humidity, which brings great disadvantages to the storage of paper materials and the development of study and life of students.
The existing method for solving the mildew of the paper book mainly comprises remedial treatment methods of controlling the humidity of the book, placing a bactericide, conducting wiping after mildew occurs and the like. These methods, although effective to some extent, have not achieved source mold resistance. At present, in the industry, in order to realize source mildew resistance, partial mildew-proof paper has been developed, and the existing mildew-proof paper preparation methods are generally two, one is to coat a mildew-proof and waterproof layer on the surface of conventional paper/paperboard, and although the method is the most effective mildew-proof method, the waterproof coating is usually a hydrophobic coating, which is not beneficial to writing, i.e. is not suitable for making paper books; in the other method, an industrial mildew preventive is sprayed in the paper forming process, although the method can achieve a certain mildew preventive effect, the industrial mildew preventive usually has certain toxicity, and paper books, particularly textbooks for students, are closely contacted with human life and have the risk of being eaten by the students in the low ages by mistake, so that the method for directly spraying the mildew preventive is not safe enough.
In summary, the conventional mildew-proof paper can prevent mildew from the source, but has problems of writing disadvantage or unsatisfactory safety.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art described above. Therefore, the mildew-proof paper provided by the invention can solve the problem of mildew of the paper from the source by matching various plant raw materials, and is safe and nontoxic.
The invention also provides a preparation method of the mildew-proof paper.
The invention also provides application of the mildew-proof paper in the fields of character printing and food packaging.
According to one aspect of the invention, the mildew-proof paper is prepared from the following raw materials: crop straw, camphorwood, rutaceae pericarp and tobacco stems.
According to a preferred embodiment of the present invention, at least the following advantages are provided:
(1) in recent years, in order to save the application of woody raw materials, the textbook paper is generally prepared by using herbaceous raw materials such as reed, but the paper obtained after bleaching has low strength and poor drainage performance due to the poor fiber length, strength and the like of the herbaceous raw materials, and thus the requirements of the printing paper are difficult to meet; the invention combines the herbaceous raw materials of crop straws, tobacco stems and the like with the woody raw material of camphorwood, thereby not only reducing the price of the raw materials for preparing the paper, but also improving the strength of the paper which is prepared from the herbaceous raw materials.
(2) In the traditional method, in order to obtain the mildew resistance of paper, an industrial mildew preventive is usually added, so that hidden danger is brought to the safety of the paper; according to the invention, traditional plants are used as raw materials of the mildew-proof paper, so that the mildew-proof effect is achieved, and the safety is improved compared with an industrial mildew-proof agent; for example, the camphor has the functions of preventing mildew and inhibiting insects, and is one of raw materials for preparing camphor balls; rutaceae plants are traditional mildew-proof raw materials, and the Rutaceae plants are placed in books from ancient times to achieve the mildew-proof effect; the tobacco also has antibacterial effect.
(3) The raw materials used in the invention mostly belong to byproducts in industrial production, have low price, reduce the cost of paper preparation, and also reduce the influence of the raw materials on the environment: for example, crop straws are usually treated by methods such as incineration and the like, so that air is polluted; rutaceae pericarp, except that orange peel can be used for preparing tangerine peel, the rest is discarded in the form of kitchen garbage; in tobacco plants, it is common to use lamina for the preparation of cigarettes, while the stems and roots of tobacco are typically discarded.
In some embodiments of the present invention, the mildew-proof paper is prepared from the following raw materials in parts by weight:
in some embodiments of the present invention, the mildew-proof paper is prepared from the following raw materials in parts by weight:
in some embodiments of the invention, the crop stalks comprise at least one of wheat stalks, rice stalks and corn stalks.
In some embodiments of the invention, the camphorwood, comprises the woody portion of cinnamomum camphora.
In some embodiments of the invention, the rutaceae pericarp comprises at least one of rutaceae pericarp, citrus pericarp, lemon pericarp, and mandarin pericarp.
In some embodiments of the invention, the tobacco stems comprise at least one of stems and roots of tobacco.
In some embodiments of the present invention, the raw material for preparing the mildew-proof paper further comprises at least one of sodium ascorbate and ginger powder.
In some embodiments of the present invention, the sodium ascorbate is added in an amount of 1 to 3 parts by weight.
The sodium ascorbate is an antioxidant and a color retention agent and can prevent the mildew-proof paper from discoloring and yellowing in the using process; meanwhile, the vitamin C sodium is a nutritional supplement for human bodies, and is safe and non-toxic.
In some embodiments of the present invention, the ginger powder is added in an amount of 5 to 8 parts by weight.
The ginger powder also has an antibacterial effect, and is derived from ginger which is a common seasoning, so that the ginger powder is safe and non-toxic.
In the preparation raw materials, the camphor wood, the Rutaceae pericarp and the tobacco stem all have the mildew-proof effect, and the camphor wood, the Rutaceae pericarp and the tobacco stem are matched with each other, so that the synergistic effect can be generated, and the mildew-proof effect is improved together.
In the preparation raw materials, the camphorwood, the Rutaceae pericarp and the tobacco stem all have fragrance, and the mildew-proof paper with different fragrance types and meeting the requirements of different crowds can be obtained by adjusting the proportion of the camphorwood, the Rutaceae pericarp and the tobacco stem.
In conclusion, most of the raw materials of the mildew-proof paper provided by the invention are from natural plants, the safety is high, and even if children eat part of the mildew-proof paper by mistake, the mildew-proof paper has no great toxicity.
According to another aspect of the invention, a preparation method of the mildew-proof paper is provided, which comprises the following steps:
s1, preparing corresponding paper pulp from crop straws, camphorwood, rutaceae peel and tobacco stems respectively by adopting a chemical pulping method, and mixing a camphorwood soak solution, a rutaceae peel soak solution and a tobacco stem soak solution generated in the chemical pulping process to obtain a mildew-proof solution;
s2, washing the paper pulp obtained in the step S1, and preparing the obtained various paper pulps into finished pulp according to a proportion;
and S3, forming the finished pulp obtained in the step S2 through a forming net, spraying the mildew-proof liquid obtained in the step S1 on the surface of the semi-finished mildew-proof paper obtained after forming, and drying to obtain the mildew-proof paper.
The preparation method according to a preferred embodiment of the present invention has at least the following advantageous effects:
(1) the preparation method provided by the invention has good matching performance with the traditional papermaking method, and does not need to modify an instrument, so that the cost is low.
(2) The preparation method provided by the invention fully utilizes fiber components (made into paper pulp) in the raw materials for preparing the mildew-proof paper and components (mostly existing in soaking liquid of various raw materials) such as mildew resistance, fragrance and the like in the raw materials, and accords with the concept of green production.
In some embodiments of the invention, in step S1, the pulp has a solid content of between 10 and 16%.
In some embodiments of the present invention, in step S1, the chemical pulping includes cooking, bleaching and pulping steps.
In some embodiments of the present invention, in step S1, the preparation process of the pulp corresponding to crop straws comprises:
s1a, mixing the crop straws with a cooking agent, and cooking;
s1b, performing solid-liquid separation on the mixture obtained in the step S1a to obtain a crop straw soaking solution and crop straw residues;
s1c, bleaching the crop straw residues after washing;
and S1d, mixing the solid obtained in the step S1c with water and pulping to obtain paper pulp corresponding to the crop straws.
In some embodiments of the invention, in step S1a, the cooking agent comprises a mixture of at least one of a sodium compound, a potassium compound, and an ammonium compound with a cooking aid.
In some embodiments of the present invention, in step S1a, the components of the cooking chemical in the crop straw are, by mass:
in some embodiments of the present invention, the sodium compound is at least one of sodium hydroxide, sodium carbonate, sodium sulfide, sodium sulfite, and sodium bisulfite.
In some embodiments of the invention, the potassium compound is at least one of potassium hydroxide, potassium carbonate, potassium sulfide, potassium sulfite, and potassium bisulfite.
In some embodiments of the present invention, the ammonium compound is at least one selected from the group consisting of ammonium sulfite, ammonium bisulfite and urea.
In some embodiments of the invention, the cooking aid is an anthraquinone and its derivatives.
In some embodiments of the invention, in step S1a, the mixing further comprises water, the weight ratio of the water to the crop straw is 1: (5-7).
In some embodiments of the present invention, in step S1a, the cooking is performed at 100-200 ℃ for 150-500 min.
In some embodiments of the present invention, in step S1b, the solid-liquid separation is at least one of filtration (including filter pressing and normal temperature filtration) and centrifugation.
In some embodiments of the invention, in step S1c, the washing is washing the straw residue obtained in step S1b with water for a plurality of times.
In some embodiments of the invention, in step S1c, the bleaching agent is sodium dithionate.
In some embodiments of the present invention, in step S1d, the beating is performed with a high frequency beater.
In some embodiments of the invention, in the step S1d, the mass percentage of the solid obtained in the step S1c in the pulp corresponding to the crop straw is 10-12%.
In some embodiments of the present invention, in step S1, the pulp corresponding to camphorwood is prepared by a similar method to the pulp corresponding to crop straw, except that in step S1d, the obtained pulp corresponding to camphorwood has a solid content of 10-16%.
In some embodiments of the present invention, in step S1, the pulp corresponding to rutaceae pericarp is prepared similarly to the pulp corresponding to crop straw, with the difference that in step S1d, the solid content in the pulp corresponding to rutaceae pericarp is 10-13%.
In some embodiments of the present invention, in step S1, the pulp corresponding to tobacco stalks is prepared similarly to the pulp corresponding to crop straws, with the difference that in step S1d, the solid content in the pulp corresponding to tobacco stalks is 10-15%.
In some embodiments of the present invention, in step S1, the step of concentrating the mold-proof solution further includes mixing the camphor wood soak solution, the rutaceae pericarp soak solution, and the tobacco stem soak solution.
In some embodiments of the invention, the concentration process is stopped when the concentration is 40 to 70% of the original volume.
In some embodiments of the present invention, in step S1, the mold inhibitor further includes at least one of the sodium ascorbate and the ginger powder.
In some embodiments of the present invention, in step S2, the solid content in the final slurry is between 0.1% and 1.2%.
In some embodiments of the invention, in the step S3, the spraying is performed 5 to 9 times.
In some embodiments of the invention, in step S3, the spraying amount is 50% or more of the mold preventive.
According to a further aspect of the invention, the application of the mildew-proof paper in the fields of word printing and food packaging is provided.
The application according to a preferred embodiment of the invention has at least the following advantageous effects:
the mildew-proof paper has certain strength, excellent printability, excellent mildew resistance and natural plant fragrance, adopts plant raw materials, is high in safety, can meet the application requirements of various fields, and is strong in universality.
In some embodiments of the invention, the field of text printing includes preparation of textbooks and literary books, and the like.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
Example 1
The embodiment prepares the mildew-proof paper, and the specific process is as follows:
s1, preparing corresponding paper pulp from crop straws, camphorwood, rutaceae peel and tobacco stems respectively by adopting a chemical pulping method, and mixing a camphorwood soak solution, a rutaceae peel soak solution and a tobacco stem soak solution generated in the chemical pulping process to obtain a mildew-proof solution; wherein the furnish of each pulp is as shown in table 1; the specific preparation method of the paper pulp comprises the following steps:
s1a, mixing crop straws, camphorwood, rutaceae pericarp and tobacco stems with a cooking medicament respectively, and cooking; in the cooking process, heating to 113 ℃ for the first time, preserving heat for 30min at the temperature, relieving pressure for 27min, heating to 170 ℃ for the second time, and preserving heat for 85 min; the formula of the medicament cooked in the step is shown in table 1;
s1b, performing solid-liquid separation on the mixture obtained in the step S1a to obtain crop straw residues, camphorwood residues, Rutaceae peel residues, tobacco stem residues and corresponding soaking liquid; mixing the obtained lignum Cinnamomi Camphorae soaking solution, Rutaceae pericarp soaking solution and tobacco stem soaking solution, adding 1kg vitamin C sodium, heating to 80 deg.C, and isolating air evaporation to 70% of original volume to obtain mildew-proof solution;
s1c, bleaching the crop straw residues after washing; washing specifically, washing the obtained slag with deionized water 3 times the volume of the slag obtained in the step S1b, and washing the slag three times respectively; the bleaching operation is as follows: mixing the washed slag with sodium dithionate accounting for 20 percent of the mass fraction of the slag in water, and extruding and filtering the mixture after treating the mixture for 24 hours;
s1d, mixing the solid obtained in the step S1c with water and pulping to obtain paper pulp corresponding to the crop straws; the solids content (mass) in each pulp was as follows:
s2, washing the four paper pulps obtained in the step S1 with water, wherein the specific method refers to the step S1c, all the obtained paper pulps are mixed, and water is added to prepare finished pulp with the solid content of 0.5%; the configuration process is carried out in a high-speed beater;
and S3, forming the finished pulp obtained in the step S2 through a forming net, spraying the mildew-proof liquid obtained in the step S1 on the surface of the semi-finished mildew-proof paper obtained after forming for 7 times, wherein the mildew-proof liquid is 60% of the mildew-proof liquid obtained in the step S1, and drying to obtain the mildew-proof paper.
Table 1 example 1 preparation of raw materials for each pulp in step S1
Example 2
In this example, a mildew-proof paper was prepared, and the specific process was different from that of example 1:
(1) in step S1b, sodium ascorbate was not included.
Comparative example 1
The comparison example prepares the mildew-proof paper, and the specific process is different from that of the example 1:
(1) the preparation raw material does not contain camphorwood.
Comparative example 2
The comparison example prepares the mildew-proof paper, and the specific process is different from that of the example 1:
(1) the raw materials for preparation do not include tobacco stalks.
Test examples
The test examples tested the odor, color, mechanical properties and mold resistance of the mold resistant papers prepared in the examples and comparative examples. Wherein: testing is carried out according to color reference GB T24999-;
the smell is directly sensed by olfaction;
the folding endurance performance is tested by referring to GBT 457-1989;
the method for testing the mildew resistance comprises the following steps: after pulverizing (20g) the mildew-proof paper obtained in examples and comparative examples, mixing with PDA culture medium to obtain mixed culture medium, wherein the PDA culture medium is composed of 200g of potato, 20g of cane sugar, 18g of agar and 1000ml of water; the thickness of the mixed culture medium in the culture dish is 6mm, aspergillus niger is inoculated in the culture dish, the inoculation amount of each culture dish is the same, the control group 1 is added with the same mass, the culture dish A4 paper of the coral sea, no paper is added in the control group 2, no aspergillus niger is inoculated in the control group 3, and any paper is also added. Culturing the groups of culture dishes at constant temperature of 30 ℃ for 5 days; and then measuring the diameter of the aspergillus growth on the culture dish by using a ruler, and measuring each diameter for 3 times to obtain an average value, wherein the bacteriostasis rate is (D-D)/D, D is the diameter of the PDA culture medium which is 100mm, and D is the diameter of the aspergillus growth. The results are shown in table 2:
the aspergillus niger is not inoculated in the control group 3, the bacteriostasis rate is 100 percent, which indicates that no additional strains are introduced in the environment, no paper is added in the control group 2, the bacteriostasis rate is 0 percent, which indicates that the aspergillus niger can be normally propagated; the comparison groups 2-3 show that the mildew-proof test result obtained in the experimental example is real;
the mildew-proof test result shows that the mildew-proof paper has obvious mildew-proof effect, but if any one of camphorwood, tobacco stems and the like is absent, the mildew-proof effect is obviously reduced.
The folding resistance test result shows that the mechanical property of the mildew-proof paper obtained by using the pure herbal raw materials is poor.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (10)
1. The mildew-proof paper is characterized in that the preparation raw materials comprise: crop straw, camphorwood, rutaceae pericarp and tobacco stems.
2. The mildew-resistant paper as claimed in claim 1, wherein the preparation raw materials comprise, by weight:
3. the mildew-resistant paper as claimed in claim 2, wherein the preparation raw materials comprise, in parts by weight:
4. the mildew-proof paper as claimed in any one of claims 1 to 3, wherein the raw material for preparing the mildew-proof paper further comprises at least one of sodium ascorbate and ginger powder; preferably, the addition amount of the sodium ascorbate is 1-3 parts by weight; preferably, the ginger powder is added in an amount of 5-8 parts by weight.
5. A method for preparing the mildew-proof paper as claimed in any one of claims 1 to 4, characterized by comprising the following steps:
s1, preparing corresponding paper pulp from crop straws, camphorwood, rutaceae peel and tobacco stems respectively by adopting a chemical pulping method, and mixing a camphorwood soak solution, a rutaceae peel soak solution and a tobacco stem soak solution generated in the chemical pulping process to obtain a mildew-proof solution;
s2, washing the paper pulp obtained in the step S1, and preparing the obtained various paper pulps into finished pulp according to a proportion;
and S3, forming the finished pulp obtained in the step S2 through a forming net, spraying the mildew-proof liquid obtained in the step S1 on the surface of the semi-finished mildew-proof paper obtained after forming, and drying to obtain the mildew-proof paper.
6. The method as claimed in claim 5, wherein in step S1, the chemical pulping comprises cooking, bleaching and pulping steps.
7. The method according to claim 5, wherein in step S1, the pulp has a solid content of 10-16%.
8. The method according to claim 5, wherein the step S1 of preparing the mold preventive solution further comprises mixing the above-mentioned camphorwood maceration extract, rutaceae pericarp maceration extract and tobacco stem maceration extract, and concentrating; preferably, the concentration treatment is stopped when the concentration is carried out to 40 to 70% of the original volume.
9. The preparation method of claim 5, wherein in the step S2, the solid content in the finished slurry is between 0.1 and 1.2%.
10. Use of the mildew-resistant paper according to any one of claims 1 to 4 in the fields of text printing and food packaging.
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