CN103865351A - UV (Ultraviolet) photocuring polyacrylate-chlorinated polypropylene compound aqueous emulsion for BOPP (Biaxially-oriented Polypropylene) coating and preparation method and application thereof - Google Patents
UV (Ultraviolet) photocuring polyacrylate-chlorinated polypropylene compound aqueous emulsion for BOPP (Biaxially-oriented Polypropylene) coating and preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses UV (Ultraviolet) photocuring polyacrylate-chlorinated polypropylene compound aqueous emulsion for a BOPP (Biaxially-oriented Polypropylene) coating and a preparation method and application thereof, and belongs to the field of polymer coatings. The compound aqueous emulsion is prepared from the following components in parts by weight: 30 to 100 parts of UV photocuring polyacrylate aqueous emulsion, 30 to 100 parts of modified chlorinated polypropylene aqueous emulsion, 0.1 to 1.5 parts of photoinitiator, 0 to 1 part of emulgator, 0 to 1 part of flatting agent, and 0.1 to 1 part of defoaming agent. The compound aqueous emulsion has UV photocuring function, and the coating formed by the compound emulsion filmed on the surface of BOPP shows relatively high adhesive force after being cured by UV radiation; in addition, the compound aqueous emulsion excludes volatile organic compounds (VOC), so that the green and environmental protection requirements are met; and the operation is simple, safe, energy-saving and efficient.
Description
Technical field
The invention belongs to polymer coating field, be specifically related to a kind of BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion and its preparation method and application.
Technical background
BiOriented Polypropylene Films (BOPP) is one of topmost packing plastics film, have that light weight, the transparency good, moistureproof antioxygen, resistance to air loss are good, flexible folding, the heat-resisting soda acid of smooth surface, solvent, rub, tear, can reproduce moulding, the color of commodity, and cheap, processing characteristics excellence, be commonly used for the surface material etc. of laminated film and use as base material, can be widely used in Plastic Packaging Materials.But because polyolefin film surface free energy is low, wettability is poor, printing difficulty therefore conventionally need be carried out pre-treatment, to improve the sticking power of coating to base material before application is carried out in polyolefin film surface.Improving coating has two classes to the sticking power method of polyolefin film, and the one, to ground modification, the 2nd, adopt tailor-(made) coating to make undercoat.In first kind method, polyolefin surfaces generally must carry out oxide treatment through methods such as flame treating, corona discharge, gas plasma processing, UV-irradiation or chemical oxidations, thereby carry high surface energy, form the required polarity dots of bonding, but conventionally there is processing heterogeneity, process the wet tension force decay in rear surface or increase the shortcomings such as low material roughness in these class methods.Coating treatments B OPP film surface has the wet tension force in the rear surface of processing can not decay because of the weather condition of high temperature, high humidity, and coated material also has better weathering resistance, and technique is simple, production cost is low, store and can operate the production time and the advantage such as grow.
In coating, the most important thing is the preparation of polymer coating liquid, polymer coating liquid has solvent-borne type and the large class of water type two at present, solvent-borne type polymer coating liquid has Chlorinated Polypropylene III, polyacrylic ester, polyurethanes etc., but solvent-borne type coating liquid generally uses the organic solvents such as benzene class, does not meet environment protection requirement; And the water type polymer coating liquid of existence is compared with solvent type at present, the adhesive power of coating and base material reduces, and properties of coating declines.
Summary of the invention
In order to overcome the deficiencies in the prior art, primary and foremost purpose of the present invention is to provide a kind of BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion, in this composite aqueous emulsion, in the structure of polyacrylate polymers, comprise the reactive group that can carry out UV photocuring, under UV-irradiation, can make the polymkeric substance in polyacrylic ester-Chlorinated Polypropylene III Compound Water Ruzhong occur to be cross-linked, the force of cohesion of effective raising system in the situation that not adding small molecules auxiliary agent.
Another object of the present invention is to provide the preparation method of above-mentioned BOPP coating UV light-solidifying poly propylene-Chlorinated Polypropylene III composite aqueous emulsion.
A further object of the present invention is to provide the application of above-mentioned BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite water soluble emulsion in BOPP thin film coated.
The object of the invention is achieved through the following technical solutions: UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for a kind of BOPP coating, and this composite aqueous emulsion is prepared from by the following component of meter by weight:
Described can UV light-solidifying poly Polyacrylate Emulsion be to be dissolved in tetrahydrofuran (THF) having polyacrylate polymers 20～40 weight parts of structural formula as the formula (1), be neutralized to neutrality, add water 60～100 weight parts, dispersed with stirring under 2000～10000r/min, except desolventizing prepares;
Wherein, R is H or CH
3, x=50～100, y=150～300, z=25～80, n=1～12.
Described polyacrylate polymers prepares in accordance with the following methods: solvent 150～200 weight parts, acrylic or methacrylic acid 10～40 weight parts, acrylate or methacrylic ester 50～80 weight parts, glycidyl acrylate 5～20 weight parts and initiator 3～4 weight parts are mixed, stir, add catalyzer 0.5～1 weight part and stopper 0.2～0.5 weight part, be warming up to 75～80 DEG C, reaction 6～12h, except desolventizing, obtain polyacrylate polymers.Described solvent is the one in butanone, ethylene glycol monomethyl ether, butanone and ethylene glycol monomethyl ether mixed solvent;
Described acrylate is more than one in methyl acrylate, ethyl propenoate, propyl acrylate, butyl acrylate, vinylformic acid isopentyl ester, cyclohexyl acrylate, Isooctyl acrylate monomer, lauryl acrylate and benzyl acrylate; Described methacrylic ester is more than one in methyl methacrylate, β-dimethyl-aminoethylmethacrylate, propyl methacrylate, butyl methacrylate, methacrylic isoamyl valerate, cyclohexyl methacrylate, Isooctyl methacrylate, lauryl methacrylate(LMA) and benzyl methacrylate; Described initiator is Diisopropyl azodicarboxylate, 2,2'-Azobis(2,4-dimethylvaleronitrile), hydrogen peroxide, di-isopropyl peroxydicarbonate, Potassium Persulphate, t-butyl hydroperoxide, hydrogen peroxide to more than one in broad-mouthed receptacle for holding liquid alkane, dilauroyl peroxide and dibenzoyl peroxide; Described catalyzer is more than one in Tetrabutyl amonium bromide, tetrabutylammonium chloride, 4-butyl ammonium hydrogen sulfate, benzyl triethyl ammonium bromide, bromination tributyl benzylamine, trioctylphosphine methyl brometo de amonio, tri-n-octyl methyl ammonium chloride and tetrabutyl ammonium tetrafluoroborate.Described stopper is more than one in Resorcinol, para benzoquinone, toluhydroquinone, MEHQ, 2-Tert. Butyl Hydroquinone and 2,5 di tert butyl hydroquinone.
Described modified chlorinated polypropylene water miscible liquid is to be dissolved in tetrahydrofuran (THF) having modified chlorinated polypropylene polymkeric substance 20～40 weight parts of structural formula as the formula (2), be neutralized to neutrality, add water 60～100 weight parts, 2000～10000r/min dispersed with stirring, except desolventizing prepares;
Wherein, n=1～8.
Described modified chlorinated polypropylene polymkeric substance prepares in accordance with the following methods: solvent 50～200 weight parts and Chlorinated Polypropylene III 30～80 weight parts are mixed, being warming up to 60 DEG C stirs, add acrylate 5～15 weight parts and initiator 1～3 weight part, be warming up to 85～110 DEG C, in 1.5～3.5h, drip vinylformic acid 1～10 weight part, continue reaction 2～5h, except desolventizing, obtain modified chlorinated polypropylene polymkeric substance; Described solvent is one or both in toluene and dimethylbenzene;
Described acrylate is more than one in methyl acrylate, ethyl propenoate, butyl acrylate, isobutyl acrylate, cyclohexyl acrylate and lauryl acrylate; Described initiator is benzoyl peroxide, peroxidized t-butyl perbenzoate, methylethyl ketone peroxide, dibenzoyl peroxide, dilauroyl peroxide and hydrogen peroxide to more than one in broad-mouthed receptacle for holding liquid alkane.
Described light trigger is alpha-hydroxyalkyl benzophenone, α-amine alkyl phenones, benzophenone, 2,4-dihydroxy benaophenonel, α, α-diethoxy acetophenone, 2,2-dimethoxy-2-phenyl-methyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-acetone, 1-hydroxy-cyclohexyl phenyl ketone and 2-hydroxy-2-methyl-1-[4-(2-hydroxyl-oxethyl) phenyl] more than one in-1-acetone;
Described emulsifying agent is more than one in sodium lauryl sulphate, Sodium dodecylbenzene sulfonate, polyoxyethylene nonylphenol ether, polyoxyethylene octylphenol ether, styroyl phenol polyoxyethylene polyoxypropylene ether and Ben-zylphenol Polyoxyethyl Ether;
Described flow agent is one or both in cellulose acetate butyrate and polydimethylsiloxane.
Described defoamer is one or both in glycerine trihydroxy-polyethers and tributyl phosphate.
The preparation method of UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for above-mentioned BOPP coating, comprise following operation steps: at normal temperatures can UV light-solidifying poly Polyacrylate Emulsion 30～100 weight parts, modified chlorinated polypropylene water miscible liquid 30～100 weight parts, light trigger 0.1～1.5 weight part, emulsifying agent 0～1 weight part, flow agent 0～1 weight part and defoamer 0.1～1 weight part mix, 2000～1000r/min dispersed with stirring, 5～30min, mix, prepare BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion.
Above-mentioned BOPP coating is the application in BOPP thin film coated with UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion, realized by following methods: use coating roller that BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion is evenly applied to thin film at BOPP film surface by 10～20g/m2, be placed under the ultraviolet lamp of wavelength region 200～400nm wavelength region, irradiate curing.
The present invention compared with prior art has the following advantages:
(1) the present invention synthesizes the kind of polyacrylic ester, modified chlorinated polypropylene monomer by adjustment; The amount ratio of adjusting polyacrylic ester, modified chlorinated polypropylene, light trigger can obtain a series of BOPP coatings UV photocuring composite aqueous emulsion.
(2) UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for BOPP coating of the present invention, wherein in the structure of acrysol can there is ultraviolet light polymerization reaction in appropriate photosensitivity group under uviolizing, polymkeric substance is occurred crosslinked, need not add small molecules auxiliary agent and just can improve system force of cohesion.
(3) BOPP coating of the present invention is not with UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion containing volatile organic solvent (VOC), and curing mode adopts ultraviolet light polymerization, simple to operate, has the features such as energy consumption is little, environmental protection, efficient energy-saving.
Specific embodiments
Below in conjunction with example, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
In the following example, each performance perameter is measured in accordance with the following methods:
Film performance is measured:
The surface tension of cured film: press ISO8296-2003 and measure.
The sticking power of cured film: use 3M600# test tape to measure.
Embodiment 1
(1) preparation of acrysol: by weight, in the reactor that agitator, thermometer are housed, add 100 parts of butanone, 20 parts of methacrylic acids, 70 parts of Propenoic acid, 2-methyl, isobutyl esters, 10 parts of methyl methacrylates, 4 parts of Diisopropyl azodicarboxylates, be warming up to 80 DEG C of reaction 6h, add 5 parts of glycidyl acrylates, 0.8 part of Resorcinol, 0.4 part of Tetrabutyl amonium bromide, continuation to react 4 hours, except desolventizing obtains polyacrylate polymers; Get 20 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 50 parts, water, dispersed with stirring under 2000r/min, except desolventizing, obtaining can UV light-solidifying poly Polyacrylate Emulsion.
(2) preparation of modified chlorinated polypropylene water miscible liquid: by weight, in the reactor that agitator, prolong, thermometer are housed, add 150 parts of toluene, be warming up to 60 DEG C, add 50 parts of Chlorinated Polypropylene IIIs, be uniformly mixed, add 10 parts of butyl acrylates, 3 parts of benzoyl peroxides, be warming up to 110 DEG C, in 1.5h, slowly dropping, as 2.5 parts of vinylformic acid, continues reaction 2.5h, removes desolventizing, obtains modified chlorinated polypropylene polymkeric substance; Get 20 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 50 parts, water, dispersed with stirring under 10000r/min, except desolventizing, obtains modified chlorinated polypropylene water miscible liquid.
(3) getting can 50 parts of UV light-solidifying poly Polyacrylate Emulsion, 50 parts of modified chlorinated polypropylene water miscible liquids, α, 0.8 part of α-diethoxy acetophenone, 0.4 part of sodium lauryl sulphate, 0.4 part of polydimethylsiloxane, 0.4 part of glycerine trihydroxy-polyethers, high-speed stirring is disperseed 10min, mix, except desolventizing, obtain BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion.
(4) step (3) gained composite aqueous emulsion is evenly applied to thin film at BOPP film surface 15g/m2, the ultraviolet lamp 4cm that is 250nm apart from wavelength, irradiates 10 seconds, obtains BOPP film; Products obtained therefrom performance test results is as shown in table 1.
Embodiment 2
(1) preparation of acrysol: by weight, in the reactor that agitator, thermometer are housed, add 100 parts of ethylene glycol monomethyl ether, 20 parts of methacrylic acids, 50 parts of Isooctyl acrylate monomers, 30 parts of butyl methacrylate, 3 parts of Diisopropyl azodicarboxylates, be warming up to 80 DEG C of reaction 4h, add 8 parts of glycidyl acrylates, 0.8 part of Resorcinol, 0.4 part of Tetrabutyl amonium bromide, continuation to react 4 hours, except desolventizing obtains polyacrylate polymers; Get 25 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 50 parts, water, dispersed with stirring under 10000r/min, except desolventizing, obtaining can UV light-solidifying poly Polyacrylate Emulsion.
(2) preparation of modified chlorinated polypropylene water miscible liquid: by weight, in the reactor that agitator, prolong, thermometer are housed, add 100 parts of toluene, be warming up to 60 DEG C, add 50 parts of Chlorinated Polypropylene IIIs, be uniformly mixed, add 5 parts of ethyl propenoates, 3 parts of dibenzoyl peroxide, be warming up to 110 DEG C, in 2h, be slowly added dropwise to 2.5 parts of vinylformic acid, continue reaction 3h, remove desolventizing, obtain modified chlorinated polypropylene polymkeric substance; Get 25 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 50 parts, water, dispersed with stirring under 6000r/min, except desolventizing, obtains modified chlorinated polypropylene water miscible liquid;
(3) getting can 20 parts of UV light-solidifying poly Polyacrylate Emulsion, 50 parts of modified chlorinated polypropylene water miscible liquids, α, 0.5 part of α-diethoxy acetophenone, 0.3 part of sodium lauryl sulphate, 0.3 part of polydimethylsiloxane, 0.3 part of tributyl phosphate, high-speed stirring is disperseed, mix, be neutralized to neutrality, except desolventizing, obtain BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion;
(4) step (3) gained composite aqueous emulsion is evenly applied to thin film at BOPP film surface 15g/m2, the ultraviolet lamp 4cm that is 250nm apart from wavelength, irradiates 10 seconds, obtains BOPP film; Products obtained therefrom performance test results is as shown in table 1.
Embodiment 3
(1) preparation of acrysol: by weight, in the reactor that agitator, thermometer are housed, add 100 parts of ethylene glycol monomethyl ether, 20 parts of methacrylic acids, 50 parts of cyclohexyl methacrylates, 30 parts of Propenoic acid, 2-methyl, isobutyl esters, 4 parts of Diisopropyl azodicarboxylates, be warming up to 75 DEG C of reaction 4h, add 8 parts of glycidyl acrylates, 0.8 part of Resorcinol, 0.4 part of Tetrabutyl amonium bromide, continuation to react 4 hours, except desolventizing, obtain polyacrylate polymers; Get 25 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 70 parts, water, dispersed with stirring under 5000r/min, except desolventizing, obtaining can UV light-solidifying poly Polyacrylate Emulsion.
(2) preparation of modified chlorinated polypropylene water miscible liquid: by weight, in the reactor that agitator, prolong, thermometer are housed, add 100 parts of toluene, be warming up to 60 DEG C, add 50 parts of Chlorinated Polypropylene IIIs, be uniformly mixed, add 5 parts of butyl acrylates, 3 parts of benzoyl peroxides, be warming up to 100 DEG C, in 1.5h, be slowly added dropwise to 3 parts of vinylformic acid, continue reaction 3h, remove desolventizing, obtain modified chlorinated polypropylene polymkeric substance; Get 25 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 70 parts, water, dispersed with stirring under 10000r/min, except desolventizing, obtains modified chlorinated polypropylene water miscible liquid;
(3) getting can 40 parts of UV light-solidifying poly Polyacrylate Emulsion, 60 parts of modified chlorinated polypropylene water miscible liquids, 0.8 part of benzophenone, 0.4 part of Sodium dodecylbenzene sulfonate, 0.4 part of polydimethylsiloxane, 0.4 part of tributyl phosphate, high-speed stirring is disperseed, mix, be neutralized to neutrality, except desolventizing, obtain BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion;
(4) step (3) gained composite aqueous emulsion is evenly applied to thin film at BOPP film surface 18g/m2, the ultraviolet lamp 4cm that is 200nm apart from wavelength, irradiates 10 seconds, obtains BOPP film; Products obtained therefrom performance test results is as shown in table 1.
Embodiment 4
(1) preparation of acrysol: by weight, in the reactor that agitator, thermometer are housed, add 80 parts of butanone and 20 parts of ethylene glycol monomethyl ether, 20 parts of methacrylic acids, 70 parts of Isooctyl methacrylates, 10 parts of Propenoic acid, 2-methyl, isobutyl esters, 4 parts of 2,2'-Azobis(2,4-dimethylvaleronitrile), be warming up to 80 DEG C of reaction 4h, add 10 parts of glycidyl acrylates, 0.8 part of Resorcinol, 0.4 part of Tetrabutyl amonium bromide, continuation to react 5 hours, except desolventizing, obtain polyacrylate polymers; Get 30 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 80 parts, water, dispersed with stirring under 8000r/min, except desolventizing, obtaining can UV light-solidifying poly Polyacrylate Emulsion.
(2) preparation of modified chlorinated polypropylene water miscible liquid: by weight, in the reactor that agitator, prolong, thermometer are housed, add 100 parts of dimethylbenzene, be warming up to 60 DEG C, add 50 parts of Chlorinated Polypropylene IIIs, be uniformly mixed, add 5 parts of butyl acrylates, 2.5 parts of benzoyl peroxide tert-butyl esters, be warming up to 95 DEG C, in 2.5h, be slowly added dropwise to 5 parts of vinylformic acid, continue reaction 3.5h, remove desolventizing, obtain modified chlorinated polypropylene polymkeric substance; Get 30 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 80 parts, water, high-speed stirring is disperseed, and except desolventizing, obtains modified chlorinated polypropylene water miscible liquid.
(3) getting can 80 parts of UV light-solidifying poly Polyacrylate Emulsion, 40 parts of modified chlorinated polypropylene water miscible liquids, α, 0.8 part of α-diethoxy acetophenone, 0.6 part of polyoxyethylene nonylphenol ether, 0.6 part of polydimethylsiloxane, 0.6 part of glycerine trihydroxy-polyethers, dispersed with stirring under 7000r/min, mix, be neutralized to neutrality, except desolventizing, obtain BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion;
(4) step (3) gained composite aqueous emulsion is evenly applied to thin film at BOPP film surface 15g/m2, the ultraviolet lamp 4cm that is 200nm apart from wavelength, irradiates 10 seconds, obtains BOPP film; Products obtained therefrom performance test results is as shown in table 1.
Embodiment 5
(1) preparation of acrysol: by weight, in the reactor that agitator, thermometer are housed, add 20 parts of butanone and 80 parts of ethylene glycol monomethyl ether, 20 parts of methacrylic acids, 60 parts of butyl acrylates, 20 parts of Isooctyl methacrylates, 4 parts of azo diethyl butyronitrile, be warming up to 80 DEG C of reaction 4h, add 12 parts of glycidyl acrylates, 0.8 part of Resorcinol, 0.4 part of Tetrabutyl amonium bromide, continuation to react 5 hours, except desolventizing, obtain polyacrylate polymers; Get 30 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 90 parts, water, dispersed with stirring under 7000r/min, except desolventizing, obtaining can UV light-solidifying poly Polyacrylate Emulsion.
(2) preparation of modified chlorinated polypropylene water miscible liquid: by weight, in the reactor that agitator, prolong, thermometer are housed, add 100 parts of dimethylbenzene, be warming up to 60 DEG C, add 50 parts of Chlorinated Polypropylene IIIs, be uniformly mixed, add 10 parts of methyl acrylates, 3 parts of benzoyl peroxides, be warming up to 90 DEG C, in 3h, be slowly added dropwise to 8 parts of vinylformic acid, continue reaction 4h, remove desolventizing, obtain modified chlorinated polypropylene polymkeric substance; Get 30 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 90 parts, water, dispersed with stirring under 10000r/min, except desolventizing, obtains modified chlorinated polypropylene water miscible liquid.
(3) getting can 80 parts of UV light-solidifying poly Polyacrylate Emulsion, 30 parts of modified chlorinated polypropylene water miscible liquids, α, 0.7 part of α-diethoxy acetophenone, 0.6 part of Ben-zylphenol Polyoxyethyl Ether, 0.5 part of cellulose acetate butyrate, 0.5 part of glycerine trihydroxy-polyethers, high-speed stirring is disperseed, mix, be neutralized to neutrality, except desolventizing, obtain BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion.
(4) step (3) gained composite aqueous emulsion is evenly applied to thin film at BOPP film surface 14g/m2, the ultraviolet lamp 4cm that is 200nm apart from wavelength, irradiates 10 seconds, obtains BOPP film properties; Products obtained therefrom performance test results is as shown in table 1.
Embodiment 6
(1) preparation of acrysol: by weight, in the reactor that agitator, thermometer are housed, add 50 parts of butanone and 50 parts of ethylene glycol monomethyl ether, 20 parts of vinylformic acid, 60 parts of Isooctyl acrylate monomers, 20 parts of butyl methacrylate, 4 parts of Diisopropyl azodicarboxylates, be warming up to 80 DEG C of reaction 4h, add 10 parts of glycidyl acrylates, 0.8 part of Resorcinol, 0.4 part of Tetrabutyl amonium bromide, continuation to react 5 hours, except desolventizing, obtain polyacrylate polymers; Get 40 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 100 parts, water, dispersed with stirring under 6000r/min, except desolventizing, obtaining can UV light-solidifying poly Polyacrylate Emulsion.
(2) preparation of modified chlorinated polypropylene water miscible liquid: by weight, in the reactor that agitator, prolong, thermometer are housed, add 100 parts of dimethylbenzene, be warming up to 60 DEG C, add 50 parts of Chlorinated Polypropylene IIIs, be uniformly mixed, add 10 parts of isobutyl acrylate, 3 parts of benzoyl peroxides, be warming up to 90 DEG C, in 3h, be slowly added dropwise to 5 parts of vinylformic acid, continue reaction 4h, remove desolventizing, obtain modified chlorinated polypropylene polymkeric substance; Get 40 parts, this polymkeric substance and be dissolved in tetrahydrofuran (THF), be neutralized to neutrality, add 100 parts, water, dispersed with stirring under 6000r/min, except desolventizing, obtains modified chlorinated polypropylene water miscible liquid.
(3) getting can 80 parts of UV light-solidifying poly Polyacrylate Emulsion, 70 parts of modified chlorinated polypropylene water miscible liquids, α, 1.2 parts of α-diethoxy acetophenones, 0.8 part of polyoxyethylene octylphenol ether, 0.6 part of cellulose acetate butyrate, 0.6 part of glycerine trihydroxy-polyethers, high-speed stirring is disperseed, mix, be neutralized to neutrality, except desolventizing, obtain BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion.
(4) step (3) gained composite aqueous emulsion is evenly applied to thin film at BOPP film surface 20g/m2, the ultraviolet lamp 4cm that is 200nm apart from wavelength, irradiates 10 seconds, obtains BOPP film; Products obtained therefrom performance test results is as shown in table 1.
Can find out BOPP coating of the present invention UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for BOPP film by table 1, can make film surface tension force reach 43 dyne left and right, be conducive to improve the cohesive force between printing-ink and BOPP film, increase attachment fastness, the present invention introduces the reactive group that can carry out UV photocuring in polyacrylic acid ester side chain, make polyacrylic ester-Chlorinated Polypropylene III composite aqueous emulsion occur crosslinked through the irradiation post polymerization thing of UV-light, can be in the situation that not adding small molecules auxiliary agent the effective force of cohesion of raising system, and BOPP coating does not contain organic solvent with UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion, meet environment protection requirement, BOPP material is improved at industrial flow performance, safety simple to operate, energy consumption is little, thereby reach the effect that the technology of the present invention improves.
The performance index of UV light-solidifying poly acrylate-modified chlorinated polypropylene composite aqueous emulsion for table 1BOPP coating
Above-described embodiment is preferably embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present invention and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection scope of the present invention.
Claims (10)
1. UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for BOPP coating, is characterized in that: this composite aqueous emulsion is prepared from by the following component of meter by weight:
2. UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for a kind of BOPP coating according to claim 1, it is characterized in that: described can UV light-solidifying poly Polyacrylate Emulsion be to be dissolved in tetrahydrofuran (THF) having polyacrylate polymers 20～40 weight parts of structural formula as the formula (1), be neutralized to neutrality, add water 60～100 weight parts, dispersed with stirring under 2000～10000r/min, except desolventizing prepares;
Wherein, R is H or CH
3, x=50～100, y=150～300, z=25～80, n=1～12.
3. UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for a kind of BOPP coating according to claim 2, it is characterized in that: described polyacrylate polymers prepares in accordance with the following methods: by solvent 150～200 weight parts, acrylic or methacrylic acid 10～40 weight parts, acrylate or methacrylic ester 50～80 weight parts, glycidyl acrylate 5～20 weight parts and initiator 3～4 weight parts mix, stir, add catalyzer 0.5～1 weight part and stopper 0.2～0.5 weight part, be warming up to 75～80 DEG C, reaction 6～12h, except desolventizing, obtain polyacrylate polymers.
4. UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for a kind of BOPP coating according to claim 3, is characterized in that:
Described solvent is the one in butanone, ethylene glycol monomethyl ether, butanone and ethylene glycol monomethyl ether mixed solvent;
Described acrylate is more than one in methyl acrylate, ethyl propenoate, propyl acrylate, butyl acrylate, vinylformic acid isopentyl ester, cyclohexyl acrylate, Isooctyl acrylate monomer, lauryl acrylate and benzyl acrylate;
Described (methyl) acrylate is more than one in (methyl) methyl acrylate, (methyl) ethyl propenoate, (methyl) propyl acrylate, (methyl) butyl acrylate, (methyl) vinylformic acid isopentyl ester, (methyl) cyclohexyl acrylate, (methyl) Isooctyl acrylate monomer, (methyl) lauryl acrylate and (methyl) benzyl acrylate;
Described initiator is Diisopropyl azodicarboxylate, 2,2'-Azobis(2,4-dimethylvaleronitrile), hydrogen peroxide, di-isopropyl peroxydicarbonate, Potassium Persulphate, t-butyl hydroperoxide, hydrogen peroxide to more than one in broad-mouthed receptacle for holding liquid alkane, dilauroyl peroxide and dibenzoyl peroxide;
Described catalyzer is more than one in Tetrabutyl amonium bromide, tetrabutylammonium chloride, 4-butyl ammonium hydrogen sulfate, benzyl triethyl ammonium bromide, bromination tributyl benzylamine, trioctylphosphine methyl brometo de amonio, tri-n-octyl methyl ammonium chloride and tetrabutyl ammonium tetrafluoroborate.
Described stopper is more than one in Resorcinol, para benzoquinone, toluhydroquinone, MEHQ, 2-Tert. Butyl Hydroquinone and 2,5 di tert butyl hydroquinone.
5. UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for a kind of BOPP coating according to claim 1, it is characterized in that: described modified chlorinated polypropylene water miscible liquid is to be dissolved in tetrahydrofuran (THF) having modified chlorinated polypropylene polymkeric substance 20～40 weight parts of structural formula as the formula (2), be neutralized to neutrality, add water 60～100 weight parts, 2000～10000r/min dispersed with stirring, except desolventizing prepares;
Wherein, n=1～8.
6. UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for a kind of BOPP coating according to claim 5, it is characterized in that: described modified chlorinated polypropylene polymkeric substance prepares in accordance with the following methods: solvent 50～200 weight parts and Chlorinated Polypropylene III 30～80 weight parts are mixed, being warming up to 60 DEG C stirs, add acrylate 5～15 weight parts and initiator 1～3 weight part, be warming up to 85～110 DEG C, in 1.5～3.5h, drip vinylformic acid 1～10 weight part, continue reaction 2～5h, except desolventizing, obtain modified chlorinated polypropylene polymkeric substance.
7. UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for a kind of BOPP coating according to claim 6, is characterized in that:
Described solvent is one or both in toluene and dimethylbenzene;
Described acrylate is more than one in methyl acrylate, ethyl propenoate, butyl acrylate, isobutyl acrylate, cyclohexyl acrylate and lauryl acrylate;
Described initiator is benzoyl peroxide, peroxidized t-butyl perbenzoate, methylethyl ketone peroxide, dibenzoyl peroxide, dilauroyl peroxide and hydrogen peroxide to more than one in broad-mouthed receptacle for holding liquid alkane.
8. UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for a kind of BOPP coating according to claim 1, is characterized in that:
Described light trigger is alpha-hydroxyalkyl benzophenone, α-amine alkyl phenones, benzophenone, 2,4-dihydroxy benaophenonel, α, α-diethoxy acetophenone, 2,2-dimethoxy-2-phenyl-methyl phenyl ketone, 2-hydroxy-2-methyl-1-phenyl-acetone, 1-hydroxy-cyclohexyl phenyl ketone and 2-hydroxy-2-methyl-1-[4-(2-hydroxyl-oxethyl) phenyl] more than one in-1-acetone;
Described emulsifying agent is more than one in sodium lauryl sulphate, Sodium dodecylbenzene sulfonate, polyoxyethylene nonylphenol ether, polyoxyethylene octylphenol ether, styroyl phenol polyoxyethylene polyoxypropylene ether and Ben-zylphenol Polyoxyethyl Ether;
Described flow agent is one or both in cellulose acetate butyrate and polydimethylsiloxane.
Described defoamer is one or both in glycerine trihydroxy-polyethers and tributyl phosphate.
9. the preparation method of UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion for a kind of BOPP coating according to claim 1, it is characterized in that comprising following operation steps: at normal temperatures can UV light-solidifying poly Polyacrylate Emulsion 30～100 weight parts, modified chlorinated polypropylene water miscible liquid 30～100 weight parts, light trigger 0.1～1.5 weight part, emulsifying agent 0～1 weight part, flow agent 0～1 weight part and defoamer 0.1～1 weight part mix, 2000～1000r/min dispersed with stirring, 5～30min, mix, prepare BOPP coating UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion.
10. a kind of BOPP coating according to claim 1 application in BOPP thin film coated with UV light-solidifying poly acrylate-Chlorinated Polypropylene III composite aqueous emulsion.
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| CN114773920A (en) * | 2022-04-25 | 2022-07-22 | 广东深展实业有限公司 | Photo-thermal dual-curing vacuum coating paint for polypropylene plastic and preparation method thereof |
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| CN112574618A (en) * | 2020-11-30 | 2021-03-30 | 江苏科技大学 | Chlorine-containing water-based ink and preparation method and application thereof |
| CN114773920A (en) * | 2022-04-25 | 2022-07-22 | 广东深展实业有限公司 | Photo-thermal dual-curing vacuum coating paint for polypropylene plastic and preparation method thereof |
| CN114773920B (en) * | 2022-04-25 | 2022-12-09 | 广东深展实业有限公司 | Photo-thermal dual-curing vacuum coating paint for polypropylene plastic and preparation method thereof |
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