CN116200963B - Waterproof paper bag adhesive and preparation method thereof - Google Patents
Waterproof paper bag adhesive and preparation method thereof Download PDFInfo
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- CN116200963B CN116200963B CN202211605235.4A CN202211605235A CN116200963B CN 116200963 B CN116200963 B CN 116200963B CN 202211605235 A CN202211605235 A CN 202211605235A CN 116200963 B CN116200963 B CN 116200963B
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- waterproof paper
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- 239000000853 adhesive Substances 0.000 title claims abstract description 27
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title abstract description 15
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000178 monomer Substances 0.000 claims abstract description 34
- 239000003292 glue Substances 0.000 claims abstract description 33
- 238000003756 stirring Methods 0.000 claims abstract description 28
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 claims abstract description 25
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims abstract description 24
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 23
- 239000003999 initiator Substances 0.000 claims abstract description 22
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003960 organic solvent Substances 0.000 claims abstract description 19
- 239000004814 polyurethane Substances 0.000 claims abstract description 17
- 229920002635 polyurethane Polymers 0.000 claims abstract description 17
- 239000002253 acid Substances 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 14
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- 239000010703 silicon Substances 0.000 claims description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- JGWUKKFNKOUBPW-UHFFFAOYSA-N 2-ethenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane Chemical compound C=C[SiH]1O[SiH2]O[SiH2]O[SiH2]O1 JGWUKKFNKOUBPW-UHFFFAOYSA-N 0.000 claims description 6
- 150000001253 acrylic acids Chemical class 0.000 claims description 6
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 claims description 6
- GQIUQDDJKHLHTB-UHFFFAOYSA-N trichloro(ethenyl)silane Chemical compound Cl[Si](Cl)(Cl)C=C GQIUQDDJKHLHTB-UHFFFAOYSA-N 0.000 claims description 6
- 239000005050 vinyl trichlorosilane Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 4
- IVKNZCBNXPYYKL-UHFFFAOYSA-N 2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[4-(2,4,4-trimethylpentan-2-yl)phenoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol Chemical compound CC(C)(C)CC(C)(C)C1=CC=C(OCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO)C=C1 IVKNZCBNXPYYKL-UHFFFAOYSA-N 0.000 claims description 4
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 claims description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 4
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 4
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 4
- -1 azodiisoheptonitrile Chemical compound 0.000 claims description 3
- BLCKNMAZFRMCJJ-UHFFFAOYSA-N cyclohexyl cyclohexyloxycarbonyloxy carbonate Chemical compound C1CCCCC1OC(=O)OOC(=O)OC1CCCCC1 BLCKNMAZFRMCJJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 230000009172 bursting Effects 0.000 abstract description 5
- 229920000642 polymer Polymers 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 12
- 238000012360 testing method Methods 0.000 description 11
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 5
- 238000013329 compounding Methods 0.000 description 5
- 235000019253 formic acid Nutrition 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 150000003863 ammonium salts Chemical class 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229920006317 cationic polymer Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
-
- 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
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/24—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/32—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming a linkage containing silicon in the main chain of the macromolecule
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
Abstract
The invention relates to the technical field of adhesives, in particular to waterproof paper bag adhesive and a preparation method thereof, wherein the waterproof paper bag adhesive comprises the following raw materials in parts by weight: 20-30 parts of acrylic acid, 10-15 parts of polyurethane, 5-10 parts of styrene, 10-12 parts of acrylonitrile, 10-14 parts of dimethylaminoethyl methacrylate, 5-9 parts of organosilicon monomer, 0.5-2 parts of acid, 1-3 parts of emulsifier, 1-2 parts of initiator and 90-100 parts of organic solvent; the preparation method of the waterproof paper bag glue comprises the steps of adding acrylic acid, polyurethane, styrene, acrylonitrile, dimethylaminoethyl methacrylate, an organosilicon monomer and an initiator into an organic solvent, uniformly stirring, preserving heat for 1-2h at 90-100 ℃, then adding an emulsifier, uniformly stirring, and adding acid to prepare the waterproof paper bag glue. After the prepared paper bag glue is coated on paper surface to form a film, the paper bag has waterproof performance, and the toughness, bursting strength and weather resistance of the paper bag are improved.
Description
Technical Field
The invention relates to the technical field of adhesives, in particular to a waterproof paper bag adhesive and a preparation method thereof.
Background
The rapid production of the existing paper bags has become a trend of world development due to the requirements of environmental protection, energy saving, safety and high-speed production. Compared with the plastic bag, the paper bag has the advantages that the production raw material is trees, is a renewable resource, and has the characteristics of degradability and recycling, so that the paper bag is widely applied. However, the common paper bags are easy to crack after being wet, and do not have waterproof performance.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide waterproof paper bag glue which can enable paper bags to have good waterproof performance.
The second aim of the invention is to provide a preparation method of the waterproof paper bag adhesive, which is simple and suitable for batch industrial production.
The first object of the invention is achieved by the following technical scheme:
a waterproof paper bag adhesive comprises the following raw materials in parts by weight:
Wherein the organic silicon monomer is a mixed organic silicon monomer composed of octamethyl cyclotetrasiloxane, vinyl cyclotetrasiloxane and vinyl trichlorosilane according to the mass ratio of 1-3:2-5:1.
Wherein the emulsifier is at least one of emulsifier OP-10, sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
Wherein the initiator is at least one of azodiisobutyronitrile, azodiisoheptonitrile, lauroyl peroxide and dicyclohexyl peroxydicarbonate.
Wherein the organic solvent is at least one of isopropanol, ethanol and methanol.
Wherein the acrylic acid is 2 low TG point acrylic acids.
Wherein the acid can be at least one of formic acid, acetic acid and hydrochloric acid.
The preparation method of the waterproof paper bag adhesive comprises the steps of adding acrylic acid, polyurethane, styrene, acrylonitrile, dimethylaminoethyl methacrylate, an organosilicon monomer and an initiator into an organic solvent, uniformly stirring, preserving heat for 1-2h at 90-100 ℃, then adding an emulsifier, uniformly stirring, and adding acid to prepare the waterproof paper bag adhesive.
Wherein, the stirring speed of the acrylic acid, polyurethane, styrene, acrylonitrile, dimethylaminoethyl methacrylate, the organosilicon monomer and the initiator when added into the organic solvent is 800-1400r/min, and the stirring is carried out for 1-2h.
Wherein the stirring speed is 600-800r/min when adding the emulsifier, and stirring for 2-3h.
The invention has the beneficial effects that:
The paper bag glue is prepared by compounding the components and strictly controlling the amounts of the components, and the prepared paper bag glue can enable the paper bag to have waterproof performance, and improve the toughness, bursting strength and weather resistance of the paper bag after being coated on paper surface for forming a film.
According to the waterproof paper bag adhesive matrix, polyurethane with oil resistance, wear resistance, low temperature resistance and ageing resistance is compounded with acrylic acid, styrene, acrylonitrile, dimethylaminoethyl methacrylate, an organosilicon monomer and other assistants to form the waterproof paper bag adhesive matrix, the acrylonitrile can improve the heat resistance and the shearing performance of the polymer, and the stability and the waterproof performance of the polymer can be improved by compounding the acrylonitrile, the acrylic acid and the styrene according to the parts by weight. The dimethylaminoethyl methacrylate is converted into ammonium salt under the action of acid to enable the polymer to be positively charged, when the dimethylaminoethyl methacrylate with the weight parts is adopted, the waterproof performance of the polymer can be better improved, because the paper fibers in the paper bag are negatively charged, the positively charged cationic polymer can be adsorbed to the surfaces of the negatively charged fibers to realize retention, so that the waterproof effect is achieved, and when the dimethylaminoethyl methacrylate content is too high and too low, the waterproof performance of the polymer can be influenced. According to the invention, the organosilicon monomer is added, so that the organosilicon monomer can form a polymer with a micro-crosslinking structure with dimethylaminoethyl methacrylate, and the tensile strength, the extensibility, the stain resistance and the waterproof water resistance of the polymer are further improved, and further, after the paper bag glue is coated on paper, the waterproof water resistance, the toughness and the bursting resistance of the paper bag can be effectively improved, and the paper bag is not easy to crack.
Detailed Description
For the purpose of making the objects, technical solutions and technical effects of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described, and the embodiments described below are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art without the benefit of the teachings of this invention, are intended to be within the scope of the invention. The specific conditions are not noted in the examples, and are carried out according to conventional conditions or conditions suggested by the manufacturer; the reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
In the description of the present invention, the term "and/or" describes an association relationship of an association object, which means that three relationships may exist, for example, a and/or B may mean: a alone, a and B together, and B alone. Wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship.
In the description of the present invention, "at least one" means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, "at least one (individual) of a, b, or c," or "at least one (individual) of a, b, and c," may each represent: a, b, c, a-b (i.e., a and b), a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple, respectively.
It should be understood that the weights of the relevant components mentioned in the embodiments of the present invention may refer not only to the specific contents of the components, but also to the proportional relationship between the weights of the components, so long as the contents of the relevant components are scaled up or down according to the embodiments of the present invention, which are within the scope of the present disclosure. Specifically, the weight in the embodiment of the invention can be mass units well known in the chemical industry field such as mu g, mg, g, kg.
In addition, the expression of a word in the singular should be understood to include the plural of the word unless the context clearly indicates otherwise. The terms "comprises" or "comprising" are intended to specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but are not intended to preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
The embodiment of the invention provides waterproof paper bag glue, which comprises the following raw materials in parts by weight:
the paper bag glue is prepared by compounding the components and strictly controlling the amounts of the components, and the prepared paper bag glue can enable the paper bag to have waterproof performance and improve the toughness and bursting strength of the paper bag after being coated on paper surface for forming a film.
According to the waterproof paper bag adhesive matrix, polyurethane with oil resistance, wear resistance, low temperature resistance and ageing resistance is compounded with acrylic acid, styrene, acrylonitrile, dimethylaminoethyl methacrylate, an organosilicon monomer and other assistants to form the waterproof paper bag adhesive matrix, the acrylonitrile can improve the heat resistance and the shearing performance of the polymer, and the stability and the waterproof performance of the polymer can be improved by compounding the acrylonitrile, the acrylic acid and the styrene according to the parts by weight. The dimethylaminoethyl methacrylate is converted into ammonium salt under the action of acid to enable the polymer to be positively charged, when the dimethylaminoethyl methacrylate with the weight parts is adopted, the waterproof performance of the polymer can be better improved, because the paper fibers in the paper bag are negatively charged, the positively charged cationic polymer can be adsorbed to the surfaces of the negatively charged fibers to realize retention, so that the waterproof effect is achieved, and when the dimethylaminoethyl methacrylate content is too high and too low, the waterproof performance of the polymer can be influenced. According to the invention, the organosilicon monomer is added, so that the organosilicon monomer can form a polymer with a micro-crosslinking structure with dimethylaminoethyl methacrylate, and the tensile strength, the extensibility, the stain resistance and the waterproof water resistance of the polymer are further improved, and further, after the paper bag glue is coated on paper, the waterproof water resistance, the toughness and the bursting resistance of the paper bag can be effectively improved, and the paper bag is not easy to crack.
Wherein the organic silicon monomer is a mixed organic silicon monomer composed of octamethyl cyclotetrasiloxane, vinyl cyclotetrasiloxane and vinyl trichlorosilane according to the mass ratio of 1-3:2-5:1. By adopting the organic silicon monomer for compounding, the waterproof performance and the coating tensile rate of the polymer are improved more favorably, and the paper bag coated with the paper bag glue has good toughness, is not easy to crack and has good waterproof performance. When the content of the organic silicon monomer is too high, the crosslinking degree of the polymer is too high, so that the stability and the elongation of the polymer can be influenced, and the performance of the paper bag adhesive can be influenced.
Wherein the emulsifier is at least one of emulsifier OP-10, sodium dodecyl benzene sulfonate and sodium dodecyl sulfate.
Wherein the initiator is at least one of azodiisobutyronitrile, azodiisoheptonitrile, lauroyl peroxide and dicyclohexyl peroxydicarbonate. The addition of the initiator can effectively regulate the viscosity of the polymer colloid, and when the dosage of the initiator is too small, the viscosity of the prepared polymer is too high, so that the coating performance and the waterproof performance of the colloid are affected.
The organic solvent is at least one of isopropanol, ethanol and methanol, and the polymer prepared by the solvents has low viscosity, is easy to emulsify in water, and is favorable for obtaining emulsion with good stability and waterproof performance.
Wherein the acrylic acid is 2 low TG point acrylic acids.
Wherein the acid can be at least one of formic acid, acetic acid and hydrochloric acid.
The embodiment of the invention also provides a preparation method of the waterproof paper bag adhesive, which comprises the steps of adding acrylic acid, polyurethane, styrene, acrylonitrile, dimethylaminoethyl methacrylate, an organosilicon monomer and an initiator into an organic solvent, uniformly stirring, preserving heat for 1-2h at 90-100 ℃, adding an emulsifier, uniformly stirring, and adding acid to prepare the waterproof paper bag adhesive.
The preparation method of the waterproof paper bag glue is simple, and the prepared paper bag glue has good waterproof performance, good stability and difficult occurrence of precipitation, and can obtain the paper bag with good waterproof performance and toughness after being coated on paper.
Wherein, the stirring speed of the acrylic acid, polyurethane, styrene, acrylonitrile, dimethylaminoethyl methacrylate, the organosilicon monomer and the initiator when added into the organic solvent is 800-1400r/min, and the stirring is carried out for 1-2h.
Wherein the stirring speed is 600-800r/min when adding the emulsifier, and stirring for 2-3h.
In order that the details of the above-described implementations and operations of the present invention may be clearly understood by those skilled in the art, and that the present invention may be embodied with significant improvements in the embodiments of the present invention, the above-described technical solutions will be exemplified by a plurality of embodiments.
Example 1
A waterproof paper bag adhesive comprises the following raw materials in parts by weight:
The organic silicon monomer is a mixed organic silicon monomer composed of octamethyl cyclotetrasiloxane, vinyl cyclotetrasiloxane and vinyl trichlorosilane according to the mass ratio of 1:2:1.
Wherein the emulsifier is emulsifier OP-10.
Wherein the initiator is azodiisobutyronitrile.
Wherein the organic solvent is isopropanol.
Wherein the acrylic acid is 2 low TG point acrylic acids.
The preparation method of the waterproof paper bag glue comprises the steps of adding acrylic acid, polyurethane, styrene, acrylonitrile, dimethylaminoethyl methacrylate, an organosilicon monomer and an initiator into an organic solvent, stirring at 800r/min for 1h, preserving heat at 90 ℃ for 1h, adding an emulsifier, stirring at 600r/min for 2h, and adding formic acid to prepare the waterproof paper bag glue.
Example 2
A waterproof paper bag adhesive comprises the following raw materials in parts by weight:
the organic silicon monomer is a mixed organic silicon monomer composed of octamethyl cyclotetrasiloxane, vinyl cyclotetrasiloxane and vinyl trichlorosilane according to the mass ratio of 2:3.5:1.
Wherein the emulsifier is sodium dodecyl benzene sulfonate.
Wherein the initiator is azo-diisoheptonitrile.
Wherein the organic solvent is ethanol.
Wherein the acrylic acid is 2 low TG point acrylic acids.
The preparation method of the waterproof paper bag glue comprises the steps of adding acrylic acid, polyurethane, styrene, acrylonitrile, dimethylaminoethyl methacrylate, an organosilicon monomer and an initiator into an organic solvent, stirring at 1100r/min for 1.5h, preserving heat at 95 ℃ for 1.5h, adding an emulsifier, stirring at 700r/min for 2.5h, and adding formic acid to prepare the waterproof paper bag glue.
Example 3
A waterproof paper bag adhesive comprises the following raw materials in parts by weight:
The organic silicon monomer is a mixed organic silicon monomer composed of octamethyl cyclotetrasiloxane, vinyl cyclotetrasiloxane and vinyl trichlorosilane according to the mass ratio of 3:5:1.
Wherein the emulsifier is sodium dodecyl sulfate.
Wherein the initiator is lauroyl peroxide.
Wherein the organic solvent is methanol.
Wherein the acrylic acid is 2 low TG point acrylic acids.
The preparation method of the waterproof paper bag glue comprises the steps of adding acrylic acid, polyurethane, styrene, acrylonitrile, dimethylaminoethyl methacrylate, an organosilicon monomer and an initiator into an organic solvent, stirring at 1400r/min for 2h, preserving heat at 100 ℃ for 2h, adding an emulsifier, stirring at 800r/min for 3h, and adding formic acid to prepare the waterproof paper bag glue.
Comparative example 1
The waterproof paper bag glue of comparative example 1 is different from that of example 1 in that the waterproof paper bag glue of comparative example 1 is free of an organosilicon monomer, and other formulations and preparation methods are the same as those of example 1, and are not described herein.
Comparative example 2
The waterproof paper bag glue of comparative example 2 is different from that of example 1 in that dimethylaminoethyl methacrylate is not added to the waterproof paper bag glue of comparative example 2, and other formulations and preparation methods of comparative example 2 are the same as those of example 1, and are not described herein.
Comparative example 3
The difference between the waterproof paper bag glue of comparative example 3 and example 1 is that polyurethane is not added in the waterproof paper bag glue of comparative example 3, and other formulations and preparation methods of comparative example 3 are the same as those of example 1, and are not described here.
Performance testing
The waterproof paper bag adhesives prepared in examples 1-3 and comparative examples 1-3 are respectively coated on the inner surfaces of paper bags in the same production batch, and dried for standby
Waterproof test: the water leakage of the paper bag was observed every day by filling the paper bag coated with water-proof paper bag glue with equal quality water, and the experimental results are recorded in table 1.
Gas barrier test: the air leakage of the waterproof paper bag was tested by inflating the paper bag coated with the waterproof paper bag adhesive at a pressure of 2kg and then sealing the mouth of the bag, and the test results are recorded in table 1.
Table 1: waterproof gas barrier test results
Low temperature resistance test: the paper bags coated with the waterproof paper bag glue were placed in a freezer cabinet at-20 ℃ to test the packaging performance of the paper bags after continuous freezing for 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 14 hours, 16 hours, 18 hours, 20 hours, 22 hours, 24 hours and 26 hours, respectively, and the package process of the paper bags was observed for the easy occurrence of breakage, and the experimental results were recorded in table 2.
Table 2: low temperature resistance test result table
High temperature resistance test: the paper bags coated with the waterproof paper bag glue were put into an oven at 80 ℃ to test the packing properties of the paper bags after continuous drying for 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 14 hours, 16 hours, 18 hours, 20 hours, 22 hours, 24 hours and 26 hours, respectively, and the paper bags were observed for the easy occurrence of breakage during the packing process, and the experimental results were recorded in table 3.
Table 3: high temperature resistant test result table
The above embodiments are preferred embodiments of the present invention, and besides, the present invention may be implemented in other ways, and any obvious substitution is within the scope of the present invention without departing from the concept of the present invention.
Claims (6)
1. The utility model provides a waterproof paper bag glue which characterized in that: the material comprises the following raw materials in parts by weight:
Acrylic acid 20-30
Polyurethane 10-15
Styrene 5-10
Acrylonitrile 10-12
Dimethylaminoethyl methacrylate 10-14
Organosilicon monomer 5-9
Acid 0.5-2
Emulsifying agent 1-3
Initiator 1-2
90-100 Parts of organic solvent;
The organic silicon monomer is a mixed organic silicon monomer composed of octamethyl cyclotetrasiloxane, vinyl cyclotetrasiloxane and vinyl trichlorosilane according to the mass ratio of 1-3:2-5:1; the emulsifier is at least one of emulsifier OP-10, sodium dodecyl benzene sulfonate and sodium dodecyl sulfate; the initiator is at least one of azodiisobutyronitrile, azodiisoheptonitrile, lauroyl peroxide and dicyclohexyl peroxydicarbonate;
Adding acrylic acid, polyurethane, styrene, acrylonitrile, dimethylaminoethyl methacrylate, an organosilicon monomer and an initiator into an organic solvent, uniformly stirring, preserving heat for 1-2h at 90-100 ℃, adding an emulsifier, uniformly stirring, and adding acid to obtain the waterproof paper bag adhesive.
2. A waterproof paper bag adhesive according to claim 1, wherein: the organic solvent is at least one of isopropanol, ethanol and methanol.
3. A waterproof paper bag adhesive according to claim 1, wherein: the acrylic acid is 2 low TG point acrylic acids.
4. A method for preparing the waterproof paper bag glue as claimed in any one of claims 1 to 3, characterized in that: adding acrylic acid, polyurethane, styrene, acrylonitrile, dimethylaminoethyl methacrylate, an organosilicon monomer and an initiator into an organic solvent, uniformly stirring, preserving heat for 1-2h at 90-100 ℃, adding an emulsifier, uniformly stirring, and adding acid to obtain the waterproof paper bag adhesive.
5. The method for preparing the waterproof paper bag glue according to claim 4, which is characterized in that: the stirring speed of the acrylic acid, polyurethane, styrene, acrylonitrile, dimethylaminoethyl methacrylate, the organosilicon monomer and the initiator when the acrylic acid, the polyurethane, the styrene, the acrylonitrile, the dimethylaminoethyl methacrylate and the initiator are added into the organic solvent is 800-1400r/min, and the stirring is carried out for 1-2h.
6. The method for preparing the waterproof paper bag glue according to claim 5, which is characterized in that: the stirring speed is 600-800r/min when adding the emulsifier, and stirring is carried out for 2-3h.
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