CN116657441A - Preparation method of release paper - Google Patents
Preparation method of release paper Download PDFInfo
- Publication number
- CN116657441A CN116657441A CN202310868105.8A CN202310868105A CN116657441A CN 116657441 A CN116657441 A CN 116657441A CN 202310868105 A CN202310868105 A CN 202310868105A CN 116657441 A CN116657441 A CN 116657441A
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- Prior art keywords
- release paper
- release
- agent
- coating
- silicone oil
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- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 239000000123 paper Substances 0.000 claims abstract description 85
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 59
- 229920002545 silicone oil Polymers 0.000 claims abstract description 41
- 238000002156 mixing Methods 0.000 claims abstract description 37
- -1 polyethylene Polymers 0.000 claims abstract description 36
- 238000000576 coating method Methods 0.000 claims abstract description 34
- 239000011248 coating agent Substances 0.000 claims abstract description 33
- 239000000853 adhesive Substances 0.000 claims abstract description 32
- 230000001070 adhesive effect Effects 0.000 claims abstract description 31
- 239000000945 filler Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 27
- 239000002667 nucleating agent Substances 0.000 claims abstract description 19
- 239000007888 film coating Substances 0.000 claims abstract description 16
- 238000009501 film coating Methods 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 claims abstract description 9
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 7
- 230000008018 melting Effects 0.000 claims abstract description 7
- 238000003851 corona treatment Methods 0.000 claims abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 239000004698 Polyethylene Substances 0.000 claims abstract description 4
- 229920000573 polyethylene Polymers 0.000 claims abstract description 4
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 49
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 42
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 36
- 239000002245 particle Substances 0.000 claims description 26
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 24
- 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 claims description 21
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 21
- 239000002048 multi walled nanotube Substances 0.000 claims description 21
- 239000011787 zinc oxide Substances 0.000 claims description 21
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 19
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 19
- 239000003054 catalyst Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 17
- 239000002270 dispersing agent Substances 0.000 claims description 16
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 claims description 14
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 11
- YWEWWNPYDDHZDI-JJKKTNRVSA-N (1r)-1-[(4r,4ar,8as)-2,6-bis(3,4-dimethylphenyl)-4,4a,8,8a-tetrahydro-[1,3]dioxino[5,4-d][1,3]dioxin-4-yl]ethane-1,2-diol Chemical compound C1=C(C)C(C)=CC=C1C1O[C@H]2[C@@H]([C@H](O)CO)OC(C=3C=C(C)C(C)=CC=3)O[C@H]2CO1 YWEWWNPYDDHZDI-JJKKTNRVSA-N 0.000 claims description 8
- 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 8
- 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 8
- 235000010290 biphenyl Nutrition 0.000 claims description 8
- 239000004305 biphenyl Substances 0.000 claims description 8
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 8
- 229920001228 polyisocyanate Polymers 0.000 claims description 8
- 239000005056 polyisocyanate Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 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 8
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000001254 oxidized starch Substances 0.000 claims description 6
- 235000013808 oxidized starch Nutrition 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000230 xanthan gum Substances 0.000 claims description 6
- 229920001285 xanthan gum Polymers 0.000 claims description 6
- 235000010493 xanthan gum Nutrition 0.000 claims description 6
- 229940082509 xanthan gum Drugs 0.000 claims description 6
- 125000006267 biphenyl group Chemical group 0.000 claims description 4
- 229940116351 sebacate Drugs 0.000 claims description 4
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 claims description 4
- 239000012790 adhesive layer Substances 0.000 claims description 3
- 238000009776 industrial production Methods 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 18
- 239000004743 Polypropylene Substances 0.000 description 14
- 229920001155 polypropylene Polymers 0.000 description 14
- 238000010030 laminating Methods 0.000 description 6
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 6
- 229920002554 vinyl polymer Polymers 0.000 description 5
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- CXMXRPHRNRROMY-UHFFFAOYSA-N n-Decanedioic acid Natural products OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 4
- 229940068918 polyethylene glycol 400 Drugs 0.000 description 4
- 239000002655 kraft paper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 241001455273 Tetrapoda Species 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006459 hydrosilylation reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
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- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/52—Addition to the formed paper by contacting paper with a device carrying the material
-
- 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
- D21H19/36—Coatings with 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
- D21H19/00—Coated paper; Coating material
- D21H19/80—Paper comprising more than one coating
- D21H19/82—Paper comprising more than one coating superposed
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
- D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures
- D21H27/28—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures treated to obtain specific resistance properties, e.g. against wear or weather
Landscapes
- Paper (AREA)
Abstract
The application relates to the technical field of release paper, and particularly discloses a preparation method of release paper. The preparation method of the release paper comprises the following steps: s1, coating an adhesive: coating an adhesive on the surface of the base paper to obtain a bonding layer; s2, coating: after melting and mixing the film coating materials, spraying the film coating materials on the bonding layer obtained in the step S1 to obtain a film layer; s3, coating a silicone oil release agent: carrying out corona treatment on the surface of the film layer obtained in the step S2, then coating a silicone oil release agent, and curing to obtain a release layer; rolling, cutting and rolling to obtain release paper; the film coating material is prepared by mixing polyethylene, filler, nucleating agent, fluxing agent and oleamide; the preparation method of the release paper has the advantages of simple steps, low cost, suitability for industrial production, excellent mechanical property and release property, and wide application prospect.
Description
Technical Field
The application relates to the technical field of release paper, in particular to a preparation method of release paper.
Background
The release paper is special paper with a non-adhesive surface, and plays roles of protection and separation when being used for manufacturing adhesives, glues and coating materials; in most cases, release papers are used with tacky materials, in particular adhesive tapes. Release papers are widely used in different fields such as adhesive manufacture, self-adhesive labels, pressure-sensitive tapes, medical dressings, coated papers, textile coatings, adhesive-treated papers, etc.; and in different fields, the performance and requirements of the release paper may be different, and the release paper needs to be customized according to specific applications.
At present, the preparation method of the release paper needs to be subjected to two steps of production processes: firstly, spraying a polyethylene coating layer on the surface of base paper; and a second step of: coating a silicone oil release agent on the polyethylene laminated layer; forming a release paper with a multilayer structure; although the release paper has good release performance, the bonding force between the layers is poor, the peeling phenomenon is easy to occur, the mechanical performance of the release paper is seriously influenced, the paper breaking condition occurs, and the application field of the release paper is limited. Therefore, there is a need to improve the mechanical properties of release papers to meet the requirements of various properties.
Disclosure of Invention
The application provides a preparation method of release paper in order to solve the problem of poor mechanical properties of the existing release paper.
The application provides a preparation method of release paper, which adopts the following technical scheme:
the preparation method of the release paper comprises the following steps:
s1, coating an adhesive: coating an adhesive on the surface of the base paper to obtain a bonding layer;
s2, coating: after melting and mixing the film coating materials, spraying the film coating materials on the bonding layer obtained in the step S1 to obtain a film layer;
s3, coating a silicone oil release agent: carrying out corona treatment on the surface of the film layer obtained in the step S2, then coating a silicone oil release agent, and curing to obtain a release layer; rolling, cutting and rolling to obtain release paper;
the film coating material is prepared by mixing polypropylene, filler, nucleating agent, fluxing agent and oleamide in a mass ratio of 100:7-11:5-8:6:1.
By adopting the technical scheme, in the preparation process of the release paper, the adhesive is coated on the surface of the base paper, then the laminating material is coated on the surface of the bonding layer, and finally the silicone oil release agent is coated, so that the release paper with the combination of the base paper, the bonding layer, the film layer and the release layer is formed, and the laminating material is obtained by mixing polypropylene, a filler, a nucleating agent, a fluxing agent and oleamide, and the interaction among the components greatly enhances the combination between the film layer and the release layer, effectively improves the mechanical property of the release paper, and expands the application range of the release paper.
Preferably, the filler is prepared by mixing montmorillonite, carboxylated multi-wall carbon nanotubes and tetrapod-like zinc oxide whiskers in a mass ratio of 4:2:5.
Preferably, the montmorillonite has a particle size of 0.3-0.8 μm; the particle size of the carboxylated multiwall carbon nanotubes is 10-30nm; the particle size of the tetrapod-like zinc oxide whisker is 20-40nm.
By adopting the technical scheme, the application takes the mixture of montmorillonite, carboxylated multiwall carbon nanotubes and tetrapod zinc oxide whiskers as the filler, and the three are mixed according to a specific proportion to synergistically increase the compatibility and mutual loading effect of the interface of the filler/polypropylene, so that the mechanical coupling and the interface bonding strength between the filler and the polypropylene are improved, and the overall performance of the film layer is enhanced; meanwhile, according to the different microstructures of the three materials, the particle sizes of the three materials are strictly controlled, so that the filler forms good space stacking on the surface of the film layer, the combination between the film layer and the release layer can be enhanced, the mechanical property of the release paper is improved, and the high temperature resistance of the release paper is improved.
Preferably, the nucleating agent is prepared by mixing 4-8:13 of diphenyl dihydrazide sebacate and bis (3, 4-dimethylbenzylidene) sorbitol in a mass ratio.
By adopting the technical scheme, the application takes the mixture of the diphenyl dihydrazide sebacate and the bis (3, 4-dimethylbenzylidene) sorbitol as the nucleating agent, and the two mutually assist, so that the mutual diffusion of polypropylene molecules in a melt state is promoted, the nucleation speed and the grain size control capability of the polypropylene are effectively improved, and the mechanical property of a film layer is remarkably improved.
Preferably, the fluxing agent is prepared by mixing glycerol rosin resin and polyisocyanate adhesive in a mass ratio of 1-3:2.
By adopting the technical scheme, the glycerol rosin resin and the polyisocyanate adhesive can jointly improve the fluxing effect of the polypropylene, improve the interfacial compatibility among the components, enhance the thermal stability of the polypropylene and prolong the service life of the release paper.
Preferably, the silicone oil release agent comprises the following raw materials in parts by weight: 40-50 parts of vinyl-terminated polydimethylsiloxane, 10-20 parts of triethoxysilane, 2-4 parts of epoxy acrylate, 4-8 parts of furoic acid, 0.05-0.2 part of catalyst, 3-6 parts of filler, 1-2 parts of dispersing agent and 30-50 parts of ethyl acetate.
Preferably, the vinyl group content of the vinyl-terminated polydimethylsiloxane is 3 to 10mol%.
Preferably, the catalyst is a platinum-cyclovinylmethylsiloxane complex.
Preferably, the silicone oil release agent is prepared by the following method: adding vinyl-terminated polydimethylsiloxane, triethoxysilane, epoxy acrylate, a catalyst and a dispersing agent into ethyl acetate, uniformly stirring, heating, carrying out reflux reaction, adding furoic acid, and uniformly stirring to obtain the silicone oil release agent.
By adopting the technical scheme, the application takes the terminal vinyl polydimethylsiloxane, the triethoxysilane and the epoxy acrylate as main raw materials, under the catalysis of the platinum-cyclovinylmethylsiloxane complex, the hydrosilylation reaction is carried out, and furoic acid are added, so that the viscosity of the silicone oil release agent is regulated, the release performance of the silicone oil release agent is improved, and the service life and stability of the silicone oil release agent are improved; meanwhile, the adhesive can be chemically connected with the film layer, so that the bonding force between the film layer and the release layer is obviously enhanced, and the mechanical property of the release paper is further improved.
Preferably, the adhesive is prepared by mixing polyvinyl alcohol, oxidized starch and xanthan gum with water according to a mass ratio of 20-30:10:3:50.
Preferably, the thickness of the adhesive layer is 8-20 μm; the thickness of the film layer is 20-100 mu m; the thickness of the release layer is 0.5-1.5 mu m.
Preferably, the melting temperature is 170-200 ℃.
Preferably, the conditions of the corona are: the voltage is 5-22kV, and the time is 30-50min.
Preferably, the curing temperature is 120-140 ℃.
In summary, the application has the following beneficial effects:
1. the preparation method of the release paper has the advantages of simple steps and low cost, is suitable for industrial production, and has excellent mechanical properties and release properties and wide market prospect.
2. The release paper is formed by combining a base paper-bonding layer-film layer-release layer multi-layer structure, and the film layer is prepared by adopting a film coating material and mixing polypropylene, a filler, a nucleating agent, a fluxing agent and oleamide; the silicone oil release agent is prepared from raw materials such as vinyl-terminated polydimethylsiloxane, triethoxysilane, epoxy acrylate, furoic acid and the like, and the adhesive is prepared by mixing polyvinyl alcohol, oxidized starch, xanthan gum and water; the layers have stronger bonding capability, so that the mechanical property of the release paper is effectively improved, and the application range of the release paper is enlarged.
Detailed Description
The present application will be described in further detail with reference to examples.
Preparation examples 1-4 provide silicone oil release agents and methods of preparing the same.
Preparation example 1
The silicone oil release agent comprises the following raw materials: 40g of vinyl-terminated polydimethylsiloxane, 10g of triethoxysilane, 2g of epoxy acrylate, 4g of furoic acid, 0.05g of catalyst, 1g of dispersing agent and 30g of ethyl acetate;
wherein the vinyl content of the vinyl-terminated polydimethylsiloxane is 3mol%; the catalyst is a platinum-cyclovinylmethyl siloxane complex; the dispersing agent is polyethylene glycol 400;
the silicone oil release agent is prepared by the following method: firstly, adding vinyl-terminated polydimethylsiloxane, triethoxysilane, epoxy acrylate, a catalyst and a dispersing agent into ethyl acetate, stirring for 5min at the rotating speed of 600r/min, heating to 60 ℃, and carrying out reflux reaction for 3 h; adding furoic acid, and stirring for 10min at the rotating speed of 200r/min to obtain the silicone oil release agent.
Preparation example 2
The silicone oil release agent comprises the following raw materials: 45g of vinyl-terminated polydimethylsiloxane, 15g of triethoxysilane, 3g of epoxy acrylate, 6g of furoic acid, 0.1g of catalyst, 1.5g of dispersing agent and 50g of ethyl acetate;
wherein the vinyl content of the vinyl-terminated polydimethylsiloxane is 7mol%; the catalyst is a platinum-cyclovinylmethyl siloxane complex; the dispersing agent is polyethylene glycol 400;
the silicone oil release agent is prepared by the following method: firstly, adding vinyl-terminated polydimethylsiloxane, triethoxysilane, epoxy acrylate, a catalyst and a dispersing agent into ethyl acetate, stirring for 8min at the rotating speed of 700r/min, heating to 70 ℃, and carrying out reflux reaction for 4.5 h; adding furoic acid, stirring for 15min at the rotating speed of 300r/min to obtain the silicone oil release agent.
Preparation example 3
The silicone oil release agent comprises the following raw materials: 50g of vinyl-terminated polydimethylsiloxane, 20g of triethoxysilane, 4g of epoxy acrylate, 8g of furoic acid, 0.2g of catalyst, 6g of filler, 2g of dispersing agent and 80g of ethyl acetate;
wherein the vinyl content of the vinyl-terminated polydimethylsiloxane is 10mol%; the catalyst is a platinum-cyclovinylmethyl siloxane complex;
the silicone oil release agent is prepared by the following method: firstly, adding vinyl-terminated polydimethylsiloxane, triethoxysilane, epoxy acrylate, a catalyst and a dispersing agent into ethyl acetate, stirring for 10min at the rotating speed of 800r/min, heating to 80 ℃, and carrying out reflux reaction for 6 h; adding furoic acid, stirring for 20min at the rotating speed of 400r/min to obtain the silicone oil release agent.
Preparation example 4
The silicone oil release agent comprises the following raw materials: 40g of vinyl-terminated polydimethylsiloxane, 10g of triethoxysilane, 2g of epoxy acrylate, 0.05g of catalyst, 1g of dispersing agent and 30g of ethyl acetate;
wherein the vinyl content of the vinyl-terminated polydimethylsiloxane is 3mol%; the catalyst is a platinum-cyclovinylmethyl siloxane complex; the dispersing agent is polyethylene glycol 400;
the silicone oil release agent is prepared by the following method: adding vinyl-terminated polydimethylsiloxane, triethoxysilane, epoxy acrylate, a catalyst and a dispersing agent into ethyl acetate, stirring for 5min at the rotating speed of 600r/min, heating to 60 ℃, and carrying out reflux reaction for 3h to obtain the silicone oil parting agent.
Examples 1-15 provide a method of making release paper.
Example 1
The preparation method of the release paper comprises the following steps:
s1, coating an adhesive: selecting kraft paper (50 mm multiplied by 50 mm) with the thickness of 0.1mm as base paper, and coating an adhesive on the surface of the base paper to obtain an adhesive layer with the thickness of 8 mu m;
the adhesive is prepared by mixing polyvinyl alcohol, oxidized starch, xanthan gum and water in a mass ratio of 20:10:3:50;
s2, coating: at 170 ℃, the film coating materials are mixed in a melting way and then sprayed on the bonding layer obtained in the step S1, and a film layer with the thickness of 20 mu m is obtained;
wherein the film coating material is prepared by mixing polypropylene, filler, nucleating agent, fluxing agent and oleamide in a mass ratio of 100:7:5:6:1; the nucleating agent is prepared by mixing sebacic acid diphenyl dihydrazide and bis (3, 4-dimethylbenzylidene) sorbitol in a mass ratio of 4:13; the filler is prepared by mixing montmorillonite, carboxylated multi-wall carbon nano tubes and tetrapod-like zinc oxide whiskers in a mass ratio of 4:2:5; and the grain diameter of montmorillonite is 0.3 mu m; the particle size of the carboxylated multiwall carbon nanotubes is 10nm; the particle diameter of the tetrapod-like zinc oxide whisker is 20nm; the fluxing agent is prepared by mixing glycerol rosin resin and polyisocyanate adhesive in a mass ratio of 1:2;
s3, coating a silicone oil release agent: carrying out corona treatment on the surface of the film layer obtained in the step S2 for 30min under the condition that the corona voltage is 5 kV; then coating a silicone oil release agent, and curing at 120 ℃ to obtain a release layer with the thickness of 0.5 mu m; rolling, cutting and rolling to obtain release paper;
wherein, the silicone oil release agent is prepared by a preparation example 1.
Example 2
The preparation method of the release paper comprises the following steps:
s1, coating an adhesive: selecting kraft paper (50 mm multiplied by 50 mm) with the thickness of 0.1mm as base paper, and coating an adhesive on the surface of the base paper to obtain a bonding layer with the thickness of 20 mu m;
the adhesive is prepared by mixing polyvinyl alcohol, oxidized starch, xanthan gum and water in a mass ratio of 25:10:3:50;
s2, coating: at 180 ℃, the film coating materials are mixed in a melting way and then sprayed on the bonding layer obtained in the step S1, and a film layer with the thickness of 50 mu m is obtained;
wherein the film coating material is prepared by mixing polypropylene, filler, nucleating agent, fluxing agent and oleamide in a mass ratio of 100:9:6:6:1; the nucleating agent is prepared by mixing sebacic acid diphenyl dihydrazide and bis (3, 4-dimethylbenzylidene) sorbitol in a mass ratio of 6:13; the filler is prepared by mixing montmorillonite, carboxylated multi-wall carbon nano tubes and tetrapod-like zinc oxide whiskers in a mass ratio of 4:2:5; and the grain diameter of montmorillonite is 0.5 μm; the particle size of the carboxylated multiwall carbon nanotubes is 20nm; the particle size of the tetrapod-like zinc oxide whisker is 30nm; the fluxing agent is prepared by mixing glycerol rosin resin and polyisocyanate adhesive in a mass ratio of 1:2;
s3, coating a silicone oil release agent: carrying out corona treatment on the surface of the film layer obtained in the step S2 for 40min under the condition that the corona voltage is 14 kV; then coating a silicone oil release agent, and curing at 130 ℃ to obtain a release layer with the thickness of 1 mu m; rolling, cutting and rolling to obtain release paper;
wherein, the silicone oil release agent is prepared by a preparation example 2.
Example 3
The preparation method of the release paper comprises the following steps:
s1, coating an adhesive: selecting kraft paper (50 mm multiplied by 50 mm) with the thickness of 0.1mm as base paper, and coating an adhesive on the surface of the base paper to obtain a bonding layer with the thickness of 20 mu m;
the adhesive is prepared by mixing polyvinyl alcohol, oxidized starch, xanthan gum and water in a mass ratio of 30:10:3:50;
s2, coating: at the temperature of 200 ℃, the film coating materials are mixed in a melting way and then are coated on the bonding layer obtained in the step S1, and a film layer with the thickness of 100 mu m is obtained;
wherein the film coating material is prepared by mixing polypropylene, filler, nucleating agent, fluxing agent and oleamide in a mass ratio of 100:11:8:6:1; the nucleating agent is prepared by mixing sebacic acid diphenyl dihydrazide and bis (3, 4-dimethylbenzylidene) sorbitol in a mass ratio of 8:13; the filler is prepared by mixing montmorillonite, carboxylated multi-wall carbon nano tubes and tetrapod-like zinc oxide whiskers in a mass ratio of 4:2:5; and the grain diameter of montmorillonite is 0.8 mu m; the particle size of the carboxylated multiwall carbon nanotubes is 30nm; the particle diameter of the tetrapod-like zinc oxide whisker is 40nm; the dispersing agent is polyethylene glycol 400; the fluxing agent is prepared by mixing glycerol rosin resin and polyisocyanate adhesive in a mass ratio of 1:2;
s3, coating a silicone oil release agent: carrying out corona treatment on the surface of the film layer obtained in the step S2 for 50min under the condition that the corona voltage is 22 kV; then coating a silicone oil release agent, and curing at the temperature of 140 ℃ to obtain a release layer with the thickness of 1.5 mu m; rolling, cutting and rolling to obtain release paper;
wherein, the silicone oil release agent is prepared by a preparation example 3.
Example 4
Example 4 differs from example 1 only in that: the filler is prepared by mixing montmorillonite and carboxylated multiwall carbon nanotubes in a mass ratio of 2:1.
Example 5
Example 5 differs from example 1 only in that: the filler is prepared by mixing montmorillonite and tetrapod-like zinc oxide whisker with the mass ratio of 4:5.
Example 6
Example 6 differs from example 1 only in that: the filler is prepared by mixing carboxylated multiwall carbon nanotubes and tetrapod-like zinc oxide whiskers in a mass ratio of 2:5.
Example 7
Example 7 differs from example 1 only in that: the grain diameter of montmorillonite is 0.5 μm; the particle size of the carboxylated multiwall carbon nanotubes is 20nm; the particle size of the tetrapod-like zinc oxide whisker is 30nm.
Example 8
Example 8 differs from example 1 only in that: the grain diameter of montmorillonite is 0.8 mu m; the particle size of the carboxylated multiwall carbon nanotubes is 30nm; the particle size of the tetrapod-like zinc oxide whisker is 40nm.
Example 9
Example 9 differs from example 1 only in that: the grain diameter of montmorillonite is 0.1 mu m; the particle size of the carboxylated multiwall carbon nanotubes is 5nm; the particle size of the tetrapod-like zinc oxide whisker is 10nm.
Example 10
Example 10 differs from example 1 only in that: the grain diameter of montmorillonite is 5 μm; the particle size of the carboxylated multiwall carbon nanotubes is 50nm; the particle size of the tetrapod-like zinc oxide whisker is 50nm.
Example 11
Example 11 differs from example 1 only in that: the nucleating agent is only sebacic acid diphenyl dihydrazide.
Example 12
Example 12 differs from example 1 only in that: the nucleating agent is only bis (3, 4-dimethylbenzylidene) sorbitol.
Example 13
Example 13 differs from example 1 only in that: the fluxing agent is only glycerol rosin resin.
Example 14
Example 14 differs from example 1 only in that: the fluxing agent is only polyisocyanate glue.
Example 15
Example 15 differs from example 1 only in that: silicone oil release agent was prepared from preparation example 4.
To verify the performance of the release paper provided by the present application, the applicant set comparative examples 1 to 4, in which:
comparative example 1
Comparative example 1 differs from example 1 only in that the laminating material was polypropylene only.
Comparative example 2
Comparative example 2 differs from example 1 only in that no filler was added to the laminating material.
Comparative example 3
Comparative example 3 differs from example 1 only in that no nucleating agent was added to the laminating material.
Comparative example 4
Comparative example 4 differs from example 1 only in that no flux was added to the laminating material.
The main properties of the release papers obtained in examples 1 to 15 and comparative examples 1 to 4 were examined respectively, and the following result parameters were obtained, specifically, see table 1:
referring to the FINAT10 standard, detecting by using a 180-degree peel strength tester, and maintaining the test temperature at 70 ℃ for 20 hours to test the release force of the release paper; performing a tear resistance test of the release paper by referring to a GB/T455 method; the test of the tensile strength of the release paper was performed with reference to the GB/T12914 method.
Table 1:
from the data in table 1: the release paper obtained in the examples 1-15 has remarkably improved mechanical properties, excellent release performance, obviously better than that of the comparative examples 1-4 and wide prospect.
As can be seen from examples 1, 4-6 and comparative example 2, the filler used in example 1 is obtained by mixing montmorillonite, carboxylated multiwall carbon nanotubes and tetrapod-like zinc oxide whiskers, and compared with examples 4-6 and comparative example 2, the tear resistance and tensile strength of the release paper obtained in example 1 are both relatively high, which fully shows that the addition of the filler in the coating material helps to improve the mechanical properties of the release paper, and the montmorillonite, carboxylated multiwall carbon nanotubes and tetrapod-like zinc oxide whiskers in the filler synergistically enhance the mechanical properties of the release paper.
As is clear from examples 1, 7 to 10, the montmorillonite used in examples 1, 7 and 8 has a particle size of 0.3 to 0.8. Mu.m; the particle size of the carboxylated multiwall carbon nanotubes is 10-30nm; the particle size of the tetrapod-like zinc oxide whisker is 20-40nm, while the particle sizes of the montmorillonite, the carboxylated multiwall carbon nanotube and the tetrapod-like zinc oxide whisker adopted in examples 9 and 10 are not in the range, and the mechanical properties of the obtained release paper are obviously lower than those of examples 1, 7 and 8; the description shows that the particle size of the filler is optimized, which is helpful for improving the mechanical property of the release paper.
As is clear from examples 1, 11 and 12 and comparative example 3, the nucleating agent used in example 1 was a mixture of diphenyl dihydrazide sebacate and bis (3, 4-dimethylbenzylidene) sorbitol, and the tear resistance and tensile strength of the release paper obtained in example 1 were higher than those of examples 11 and 12 and comparative example 3.
As is clear from examples 1, 13 and 14 and comparative example 4, the flux used in example 1 is a mixture of glycerol rosin resin and polyisocyanate adhesive, and the mechanical properties of the release paper obtained in example 1 are significantly improved compared with examples 13, 14 and comparative example 4.
As is clear from examples 1 and 15, the silicone release agent used in example 1 was prepared in preparation example 1, and the release paper obtained in example 1 was excellent in mechanical properties and also better in release properties than the silicone release agent used in example 15 was prepared in preparation example 4.
As can be seen from example 1 and comparative example 1, the release paper in example 1 has greatly improved release performance and mechanical properties, and the release paper in example 1 is prepared by mixing polypropylene, filler, nucleating agent, fluxing agent and oleamide.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
Claims (10)
1. The preparation method of the release paper is characterized by comprising the following steps of:
s1, coating an adhesive: coating an adhesive on the surface of the base paper to obtain a bonding layer;
s2, coating: after melting and mixing the film coating materials, spraying the film coating materials on the bonding layer obtained in the step S1 to obtain a film layer;
s3, coating a silicone oil release agent: carrying out corona treatment on the surface of the film layer obtained in the step S2, then coating a silicone oil release agent, and curing to obtain a release layer; rolling, cutting and rolling to obtain release paper;
the film coating material is prepared by mixing polyethylene, filler, nucleating agent, fluxing agent and oleamide in a mass ratio of 100:7-11:5-8:6:1.
2. The method for preparing release paper according to claim 1, wherein the filler is obtained by mixing montmorillonite, carboxylated multi-walled carbon nanotubes and tetrapod-like zinc oxide whiskers in a mass ratio of 4:2:5.
3. The method for preparing release paper according to claim 2, wherein the montmorillonite has a particle size of 0.3-0.8 μm; the particle size of the carboxylated multiwall carbon nanotubes is 10-30nm; the particle size of the tetrapod-like zinc oxide whisker is 20-40nm.
4. The method for preparing release paper according to claim 1, wherein the nucleating agent is obtained by mixing 4-8:13 mass ratio of diphenyl dihydrazide sebacate and bis (3, 4-dimethylbenzylidene) sorbitol.
5. The method for preparing release paper according to claim 4, wherein the fluxing agent is obtained by mixing glycerol rosin resin and polyisocyanate adhesive in a mass ratio of 1-3:2.
6. The preparation method of the release paper according to claim 1, wherein the silicone oil release agent comprises the following raw materials in parts by weight: 40-50 parts of vinyl-terminated polydimethylsiloxane, 10-20 parts of triethoxysilane, 2-4 parts of epoxy acrylate, 4-8 parts of furoic acid, 0.05-0.2 part of catalyst, 3-6 parts of filler, 1-2 parts of dispersing agent and 30-50 parts of ethyl acetate.
7. The method of preparing release paper according to claim 6, wherein the silicone oil release agent is prepared by the following method: adding vinyl-terminated polydimethylsiloxane, triethoxysilane, epoxy acrylate, a catalyst and a dispersing agent into ethyl acetate, uniformly stirring, heating, carrying out reflux reaction, adding furoic acid, and uniformly stirring to obtain the silicone oil release agent.
8. The method for preparing release paper according to claim 1, wherein the adhesive is prepared by mixing polyvinyl alcohol, oxidized starch and xanthan gum with water in a mass ratio of 20-30:10:3:50.
9. The method of producing a release paper according to claim 1, wherein the thickness of the adhesive layer is 8 to 20 μm; the thickness of the film layer is 20-100 mu m; the thickness of the release layer is 0.5-1.5 mu m.
10. The method for preparing release paper according to claim 1, wherein the corona conditions are: the voltage is 5-22kV, and the time is 30-50min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310868105.8A CN116657441B (en) | 2023-07-17 | Preparation method of release paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310868105.8A CN116657441B (en) | 2023-07-17 | Preparation method of release paper |
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| CN116657441A true CN116657441A (en) | 2023-08-29 |
| CN116657441B CN116657441B (en) | 2024-09-27 |
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| KR20020020599A (en) * | 2000-09-09 | 2002-03-15 | 황성호 | Composition of Radiation Curable Silicone Materials |
| JP2009235241A (en) * | 2008-03-27 | 2009-10-15 | Jsr Corp | Thermoplastic elastomer composition, foam and method for producing foam |
| CN101709559A (en) * | 2009-09-15 | 2010-05-19 | 苏州斯迪克电子胶粘材料有限公司 | High-brightness release paper, and preparation method and applications thereof |
| CN113250007A (en) * | 2021-05-06 | 2021-08-13 | 吉翔宝（太仓）离型材料科技发展有限公司 | Low-peeling-force high-temperature-resistant release paper and processing technology thereof |
| WO2022052942A1 (en) * | 2020-09-09 | 2022-03-17 | 庞志清 | Composite raw material, film, base film, waterproof rolled material, film preparation method and application thereof |
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| KR20020020599A (en) * | 2000-09-09 | 2002-03-15 | 황성호 | Composition of Radiation Curable Silicone Materials |
| JP2009235241A (en) * | 2008-03-27 | 2009-10-15 | Jsr Corp | Thermoplastic elastomer composition, foam and method for producing foam |
| CN101709559A (en) * | 2009-09-15 | 2010-05-19 | 苏州斯迪克电子胶粘材料有限公司 | High-brightness release paper, and preparation method and applications thereof |
| WO2022052942A1 (en) * | 2020-09-09 | 2022-03-17 | 庞志清 | Composite raw material, film, base film, waterproof rolled material, film preparation method and application thereof |
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