CN112266739A - Preparation method of UV-cured pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin - Google Patents
Preparation method of UV-cured pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin Download PDFInfo
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- CN112266739A CN112266739A CN202011037943.3A CN202011037943A CN112266739A CN 112266739 A CN112266739 A CN 112266739A CN 202011037943 A CN202011037943 A CN 202011037943A CN 112266739 A CN112266739 A CN 112266739A
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- chlorinated paraffin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
- C09J4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09J159/00 - C09J187/00
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
Abstract
The invention discloses a preparation method of a UV-cured pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin, and particularly relates to the field of packaging and labeling industries. The invention prepares the acrylic ester prepolymer by using isooctyl acrylate and acrylic acid/hydroxyethyl acrylate, then prepares the acrylic ester mixed solution containing chlorinated paraffin by using the acrylic ester prepolymer, or simply mixes the monomer mixture with chlorinated paraffin and photoinitiator directly, then coats the mixed solution on a release film or a transparent PET lining film or a corresponding transparent film material, and then polymerizes into a pressure-sensitive adhesive film under UV illumination, the preparation process is simple, and for a thin coating film below 50 micrometers, the pre-reaction process can be even saved, only simple mixing is needed, the length of a processing chain is shortened, the production cost is reduced, and the production period is shortened.
Description
Technical Field
The invention relates to the technical field of packaging and labeling industries, in particular to a preparation method of a UV (ultraviolet) curing pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin.
Background
The reaction principle of the UV light curing acrylic pressure sensitive adhesive is that the photoinitiator is combined on the main chain of the polymer, so that even though the photoinitiator does not participate in complete reaction, the photoinitiator exists on the main chain of the polymer and cannot be dissociated, and therefore, odor cannot be generated. In addition, the UV light-cured acrylic pressure-sensitive adhesive is subjected to light curing by adopting a short wave UVC wave band, the sunlight does not contain the wave band, and the UV light of the wave band can be intercepted by the atmosphere. Therefore, the polymerization of the product is not initiated even when the product is exposed to sunlight. The UV light-cured polyurethane-acrylic pressure-sensitive adhesive is formed by chemical reaction of polyurethane and polyalcohol through halogenation and the like, and then fibrillation is carried out to realize the performance of adjusting the stripping force, and the UV light-cured polyurethane-acrylic pressure-sensitive adhesive is widely applied to the field of medicines at present. Although the present UV light curable polyurethane-acrylic pressure sensitive adhesive is not fully applied in the label field, it will be a development direction in the future. Although the UV light curing SIS series hot melt adhesive is still under development, the performances of the UV light curing SIS series hot melt adhesive such as viscosity, peeling force and the like can not be realized by the common adhesive. Generally, it is a necessary development trend that the UV light curing technology is used in the field of pressure sensitive adhesive to replace solvent-based pressure sensitive adhesive, but the performance of each aspect in practical application will be continuously summarized and improved, and as time goes on, the related products of the UV light curing pressure sensitive adhesive are continuously mature, and the UV light curing technology will become a main production process in the field and is utilized by people.
The UV curing pressure sensitive adhesive and the water-based pressure sensitive adhesive are applied to various screen printing occasions by the obvious product characteristics of the UV curing pressure sensitive adhesive, the water-based pressure sensitive adhesive is accepted by customers by longer application experience, the UV curing pressure sensitive adhesive is used as a new technology and plays more and more important roles in future application, the existing UV curing pressure sensitive adhesive has complicated process steps and higher energy consumption in the preparation process, the prepared UV curing pressure sensitive adhesive has insufficient adhesive force, and the peel strength cannot meet the use requirement.
Disclosure of Invention
In order to overcome the above defects in the prior art, the embodiment of the invention provides a preparation method of a UV-curable pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin, and the technical problems to be solved by the invention are as follows: how to simplify the preparation process of the UV curing pressure sensitive adhesive and improve the service performance of the UV curing pressure sensitive adhesive.
In order to achieve the purpose, the invention provides the following technical scheme: the UV-cured pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin comprises the following raw materials in parts by weight: 50-80 parts of acrylate prepolymer, 10-40 parts of 60# chlorinated paraffin, 0-0.006 part of cross-linking agent and 0.05-0.5 part of photoinitiator TPO, wherein the acrylate prepolymer is prepared from the following raw materials in parts by weight: 85-90 parts of soft monomer, 10-15 parts of functional monomer and 0-0.006 part of cross-linking agent, wherein the soft monomer is isooctyl acrylate, the functional monomer is any one of acrylic acid and hydroxyethyl acrylate, the acrylate prepolymer is formed by polymerizing raw materials under the illumination of an ultraviolet lamp, and the viscosity is 450-1000 mPa.s.
In a preferred embodiment, the acrylate prepolymer is added with 0.01-0.05 wt% of photoinitiator to the composition.
In a preferred embodiment, the crosslinking agent is any one of trimethylolpropane triacrylate or polyethylene glycol 400 diacrylate.
A preparation method of a UV-cured pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin comprises the following specific preparation steps:
step one, preparation of a prepolymer: putting isooctyl acrylate, acrylic acid/hydroxyethyl acrylate and a photoinitiator TPO into a light reaction kettle according to the proportion, uniformly mixing, carrying out polymerization reaction under the condition of UV light irradiation in a nitrogen environment, and introducing oxygen to terminate the reaction when the viscosity of the system reaches the standard to obtain an acrylate prepolymer;
step two, preparing the acrylate mixed solution containing chlorinated paraffin:
pouring the acrylate prepolymer prepared in the step one into a glue mixing tank, adding 60# chlorinated paraffin according to the weight part formula, and stirring and dissolving uniformly at room temperature to obtain a mixed solution;
adding a cross-linking agent and a photoinitiator TPO in a formula amount into the mixed solution, and continuously stirring for half an hour to obtain an acrylate mixed solution;
step three: coating and light curing: and (3) coating the acrylate mixed solution obtained in the step two on two sides of the polyester film, covering a release film to isolate oxygen, and curing for 120s under a UV lamp to obtain the UV-cured pressure-sensitive adhesive transparent double-sided adhesive film.
In a preferred embodiment, when the addition amount of the functional monomer and the addition amount of the functional monomer are different in the first step, the viscosity of the system reaches the range of the standard value of 450mPa.s-1000 mPa.s.
In a preferred embodiment, the filler can be added in the step (II) and the mixture is subjected to vacuum degassing treatment for standby.
In a preferred embodiment, the irradiation energy of the UV lamp in the third step is set to 30mJ/cm2-50mJ/cm2。
The invention has the technical effects and advantages that:
according to the invention, the acrylate prepolymer is prepared from isooctyl acrylate and acrylic acid/hydroxyethyl acrylate, the acrylate mixed solution containing chlorinated paraffin is prepared from the acrylate prepolymer, and then the UV lamp is used for coating and illumination curing, so that the preparation process is simple in steps, the reaction process only needs simple mixing, the length of a processing chain is shortened, the product yield is effectively improved, the production cost of a producer is reduced, the production period is shortened, the peeling strength and the glue dropping resistance of the prepared finished product are greatly improved, and the use effect is ensured.
Detailed Description
In order to facilitate an understanding of the present invention, the present invention will be described more fully and in detail with reference to the preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by existing methods.
Example 1:
the invention provides a chlorinated paraffin-containing UV-cured pressure-sensitive adhesive transparent double-sided adhesive film, which comprises the following raw materials in parts by weight: 50-80 parts of acrylate prepolymer, 10-40 parts of 60# chlorinated paraffin, 0-0.006 part of cross-linking agent and 0.05-0.5 part of photoinitiator TPO, wherein the acrylate prepolymer is prepared from the following raw materials in parts by weight: 85-90 parts of soft monomer, 10-15 parts of functional monomer and 0-0.006 part of cross-linking agent, wherein the soft monomer is isooctyl acrylate, the functional monomer is any one of acrylic acid and hydroxyethyl acrylate, the acrylate prepolymer is formed by polymerizing raw materials under the illumination of an ultraviolet lamp, and the viscosity is 450-1000 mPa.s;
the acrylate prepolymer is added with 0.01-0.05 wt% of photoinitiator in the composition, and the cross-linking agent is any one of trimethylolpropane triacrylate or polyethylene glycol 400 diacrylate;
specifically, in this embodiment: a preparation method of a UV-cured pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin comprises the following specific preparation steps:
step one, preparation of a prepolymer: in an illumination reaction kettle, uniformly mixing 90 parts by weight of isooctyl acrylate, 10 parts by weight of acrylic acid and 0.05 part by weight of photoinitiator TPO, carrying out polymerization reaction under the condition of nitrogen gas through UV illumination, and when the viscosity of the system reaches 450-600 mPa.s, introducing oxygen to terminate the reaction to obtain an acrylate prepolymer A;
step two, preparing the acrylate mixed solution containing chlorinated paraffin:
pouring 60 parts by weight of the acrylate prepolymer A prepared in the step one into a glue mixing tank, adding 40 parts by weight of 60# chlorinated paraffin according to the formula, and stirring and dissolving uniformly at room temperature to obtain a mixed solution;
adding 0.45 part by weight of photoinitiator TPO into the mixed solution, and continuously stirring for half an hour to obtain an acrylate mixed solution;
step three: coating and light curing: coating the acrylic ester mixed solution obtained in the step two on two sides of a polyester film, covering a release film to isolate oxygen, and curing the polyester film for 120s under a UV lamp (the illumination energy is about 30 mJ/cm)2-50mJ/cm2) And obtaining the UV curing pressure sensitive adhesive transparent double-sided adhesive film.
Example 2:
the invention provides a chlorinated paraffin-containing UV-cured pressure-sensitive adhesive transparent double-sided adhesive film, which comprises the following raw materials in parts by weight: 50-80 parts of acrylate prepolymer, 10-40 parts of 60# chlorinated paraffin, 0-0.006 part of cross-linking agent and 0.05-0.5 part of photoinitiator TPO, wherein the acrylate prepolymer is prepared from the following raw materials in parts by weight: 85-90 parts of soft monomer, 10-15 parts of functional monomer and 0-0.006 part of cross-linking agent, wherein the soft monomer is isooctyl acrylate, the functional monomer is any one of acrylic acid and hydroxyethyl acrylate, the acrylate prepolymer is formed by polymerizing raw materials under the illumination of an ultraviolet lamp, and the viscosity is 450-1000 mPa.s;
the acrylate prepolymer is added with 0.01-0.05 wt% of photoinitiator in the composition, and the cross-linking agent is any one of trimethylolpropane triacrylate or polyethylene glycol 400 diacrylate;
specifically, in this embodiment: a preparation method of a UV-cured pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin comprises the following specific preparation steps:
step one, preparation of a prepolymer: in an illumination reaction kettle, uniformly mixing 54 parts by weight of isooctyl acrylate, 6 parts by weight of acrylic acid, 40 parts by weight of 60# chlorinated paraffin and 0.05 part by weight of photoinitiator TPO, carrying out polymerization reaction under the condition of nitrogen gas through UV illumination, and introducing oxygen to terminate the reaction when the viscosity of the system reaches 800-1000 mPa.s to obtain an acrylate prepolymer B;
step two, preparing the acrylate mixed solution containing chlorinated paraffin: pouring 100 parts by weight of the acrylate prepolymer B prepared in the step one into a glue mixing tank, adding 0.2 part by weight of a photoinitiator TPO, and continuously stirring for one hour to obtain an acrylate mixed solution;
step three: coating and light curing: coating the acrylic ester mixed solution obtained in the step two on two sides of a polyester film, covering a release film to isolate oxygen, and curing the polyester film for 120s under a UV lamp (the illumination energy is about 30 mJ/cm)2-50mJ/cm2) And obtaining the UV curing pressure sensitive adhesive transparent double-sided adhesive film.
Example 3:
the invention provides a chlorinated paraffin-containing UV-cured pressure-sensitive adhesive transparent double-sided adhesive film, which comprises the following raw materials in parts by weight: 50-80 parts of acrylate prepolymer, 10-40 parts of 60# chlorinated paraffin, 0-0.006 part of cross-linking agent and 0.05-0.5 part of photoinitiator TPO, wherein the acrylate prepolymer is prepared from the following raw materials in parts by weight: 85-90 parts of soft monomer, 10-15 parts of functional monomer and 0-0.006 part of cross-linking agent, wherein the soft monomer is isooctyl acrylate, the functional monomer is any one of acrylic acid and hydroxyethyl acrylate, the acrylate prepolymer is formed by polymerizing raw materials under the illumination of an ultraviolet lamp, and the viscosity is 450-1000 mPa.s;
the acrylate prepolymer is added with 0.01-0.05 wt% of photoinitiator in the composition, and the cross-linking agent is any one of trimethylolpropane triacrylate or polyethylene glycol 400 diacrylate;
specifically, in this embodiment: a preparation method of a UV-cured pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin comprises the following specific preparation steps:
step one, preparation of a prepolymer: in an illumination reaction kettle, uniformly mixing 54 parts by weight of isooctyl acrylate, 6 parts by weight of hydroxyethyl acrylate, 40 parts by weight of 60# chlorinated paraffin and 0.05 part by weight of photoinitiator TPO, carrying out polymerization reaction under the condition of nitrogen atmosphere by UV illumination, and introducing oxygen to terminate the reaction when the viscosity of the system reaches 800-1000 mPa.s to obtain an acrylate prepolymer C;
step two, preparing the acrylate mixed solution containing chlorinated paraffin: pouring 100 parts by weight of the acrylate prepolymer C prepared in the step one into a glue mixing tank, adding 0.5 part by weight of a photoinitiator TPO, stirring for half an hour, then adding 2 parts by weight of filler white carbon black, continuously stirring for half an hour, and then performing vacuum-pumping defoaming treatment to obtain an acrylate mixed solution;
step three: coating and light curing: coating the acrylic ester mixed solution obtained in the step two on two sides of a polyester film, covering a release film to isolate oxygen, and curing the polyester film for 120s under a UV lamp (the illumination energy is about 30 mJ/cm)2-50mJ/cm2) And obtaining the UV curing pressure sensitive adhesive transparent double-sided adhesive film.
Example 4:
the invention provides a chlorinated paraffin-containing UV-cured pressure-sensitive adhesive transparent double-sided adhesive film, which comprises the following raw materials in parts by weight: 50-80 parts of acrylate prepolymer, 10-40 parts of 60# chlorinated paraffin, 0-0.006 part of cross-linking agent and 0.05-0.5 part of photoinitiator TPO, wherein the acrylate prepolymer is prepared from the following raw materials in parts by weight: 85-90 parts of soft monomer, 10-15 parts of functional monomer and 0-0.006 part of cross-linking agent, wherein the soft monomer is isooctyl acrylate, the functional monomer is any one of acrylic acid and hydroxyethyl acrylate, the acrylate prepolymer is formed by polymerizing raw materials under the illumination of an ultraviolet lamp, and the viscosity is 450-1000 mPa.s;
the acrylate prepolymer is added with 0.01-0.05 wt% of photoinitiator in the composition, and the cross-linking agent is any one of trimethylolpropane triacrylate or polyethylene glycol 400 diacrylate;
specifically, in this embodiment: a preparation method of a UV-cured pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin comprises the following specific preparation steps:
step one, preparation of a prepolymer: in an illumination reaction kettle, uniformly mixing 54 parts by weight of isooctyl acrylate, 6 parts by weight of acrylic acid, 40 parts by weight of 60# chlorinated paraffin and 0.05 part by weight of photoinitiator TPO, carrying out polymerization reaction under the condition of nitrogen gas through UV illumination, and introducing oxygen to terminate the reaction when the viscosity of the system reaches 800-1000 mPa.s to obtain an acrylate prepolymer B;
step two, preparing the acrylate mixed solution containing chlorinated paraffin: pouring 100 parts by weight of the acrylate prepolymer B prepared in the step one into a glue mixing tank, adding 1 part by weight of filler white carbon black and 4 parts by weight of filler hollow glass microspheres, stirring for one hour, and then performing vacuum-pumping defoaming treatment to obtain an acrylate mixed solution;
step three: coating and light curing: coating the acrylic ester mixed solution obtained in the step two on two sides of a polyester film, covering a release film to isolate oxygen, and curing the polyester film for 120s (under the condition of illumination) under a UV lampThe energy is about 30mJ/cm2-50mJ/cm2) And obtaining the UV curing pressure sensitive adhesive transparent double-sided adhesive film.
Example 5:
the invention provides a chlorinated paraffin-containing UV-cured pressure-sensitive adhesive transparent double-sided adhesive film, which comprises the following raw materials in parts by weight: 50-80 parts of acrylate prepolymer, 10-40 parts of 60# chlorinated paraffin, 0-0.006 part of cross-linking agent and 0.05-0.5 part of photoinitiator TPO, wherein the acrylate prepolymer is prepared from the following raw materials in parts by weight: 85-90 parts of soft monomer, 10-15 parts of functional monomer and 0-0.006 part of cross-linking agent, wherein the soft monomer is isooctyl acrylate, the functional monomer is any one of acrylic acid and hydroxyethyl acrylate, the acrylate prepolymer is formed by polymerizing raw materials under the illumination of an ultraviolet lamp, and the viscosity is 450-1000 mPa.s;
the acrylate prepolymer is added with 0.01-0.05 wt% of photoinitiator in the composition, and the cross-linking agent is any one of trimethylolpropane triacrylate or polyethylene glycol 400 diacrylate;
specifically, in this embodiment: a preparation method of a UV-cured pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin comprises the following specific preparation steps:
step one, preparation of a prepolymer: in an illumination reaction kettle, uniformly mixing 90 parts by weight of isooctyl acrylate, 10 parts by weight of acrylic acid and 0.05 part by weight of photoinitiator TPO, carrying out polymerization reaction under the condition of nitrogen gas through UV illumination, and when the viscosity of the system reaches 450-600 mPa.s, introducing oxygen to terminate the reaction to obtain an acrylate prepolymer A;
step two, preparing the acrylate mixed solution containing chlorinated paraffin:
pouring 60 parts of the acrylate prepolymer A prepared in the step one into a glue mixing tank, adding 40 parts of 60# chlorinated paraffin according to the weight proportion, and stirring and dissolving uniformly at room temperature to obtain a mixed solution;
adding 50 parts by weight of filler talcum powder into the mixed solution, continuously stirring for half an hour, and then performing vacuum-pumping defoaming treatment to obtain an acrylate mixed solution;
step three: coating and light curing: coating the acrylic ester mixed solution obtained in the step two on two sides of a polyester film, covering a release film to isolate oxygen, and curing the polyester film for 120s under a UV lamp (the illumination energy is about 30 mJ/cm)2-50mJ/cm2) And obtaining the UV curing pressure sensitive adhesive transparent double-sided adhesive film.
Example 6:
the UV-curable pressure-sensitive adhesive transparent double-sided adhesive films prepared in the above examples 1 to 5 and the UV-curable pressure-sensitive adhesive on the market were respectively tested by a 180 ° peel strength test, every 20 sheets were taken as one group, and the UV-curable pressure-sensitive adhesive transparent double-sided adhesive films prepared in the five examples were respectively tried in five groups, to obtain the following data:
as can be seen from the above table, the 180 DEG peel strength of the UV-curable pressure-sensitive adhesive transparent double-sided adhesive films prepared from the raw materials in examples 1 to 5 is 13.3N/25mm to 38N/25mm, which is greatly improved compared with the peel strength of the commercially available UV-curable pressure-sensitive adhesives, and the adhesive has excellent performance because no obvious adhesive falling condition is found after long-term use.
And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (7)
1. The utility model provides a transparent double faced adhesive film of UV solidification pressure-sensitive adhesive that contains chlorinated paraffin which characterized in that: the composite material comprises the following raw materials in parts by weight: 50-80 parts of acrylate prepolymer, 10-40 parts of 60# chlorinated paraffin, 0-0.006 part of cross-linking agent and 0.05-0.5 part of photoinitiator TPO, wherein the acrylate prepolymer is prepared from the following raw materials in parts by weight: 85-90 parts of soft monomer, 10-15 parts of functional monomer and 0-0.006 part of cross-linking agent, wherein the soft monomer is isooctyl acrylate, the functional monomer is any one of acrylic acid and hydroxyethyl acrylate, the acrylate prepolymer is formed by polymerizing raw materials under the illumination of an ultraviolet lamp, and the viscosity is 450-1000 mPa.s.
2. The UV-curable pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin according to claim 1, which is characterized in that: the acrylate prepolymer is added with 0.01-0.05 wt% of photoinitiator in the composition.
3. The UV-curable pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin according to claim 1, which is characterized in that: the cross-linking agent is any one of trimethylolpropane triacrylate or polyethylene glycol 400 diacrylate.
4. A method for preparing a UV-curing pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin, which can prepare the UV-curing pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin according to any one of claims 1 to 3, and is characterized in that: the preparation method comprises the following specific steps:
step one, preparation of a prepolymer: putting isooctyl acrylate, acrylic acid/hydroxyethyl acrylate and a photoinitiator TPO into a light reaction kettle according to the proportion, uniformly mixing, carrying out polymerization reaction under the condition of UV light irradiation in a nitrogen environment, and introducing oxygen to terminate the reaction when the viscosity of the system reaches the standard to obtain an acrylate prepolymer;
step two, preparing the acrylate mixed solution containing chlorinated paraffin:
pouring the acrylate prepolymer prepared in the step one into a glue mixing tank, adding 60# chlorinated paraffin according to the weight part formula, and stirring and dissolving uniformly at room temperature to obtain a mixed solution;
adding a cross-linking agent and a photoinitiator TPO in a formula amount into the mixed solution, and continuously stirring for half an hour to obtain an acrylate mixed solution;
step three: coating and light curing: and (3) coating the acrylate mixed solution obtained in the step two on two sides of the polyester film, covering a release film to isolate oxygen, and curing for 120s under a UV lamp to obtain the UV-cured pressure-sensitive adhesive transparent double-sided adhesive film.
5. The preparation method of the UV-curable pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin according to claim 4, characterized in that: and in the first step, when the addition amounts of the functional monomer and the functional monomer are different, the viscosity of the system reaches an unequal regional value with a standard value of 450-1000 mPa.s.
6. The preparation method of the UV-curable pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin according to claim 4, characterized in that: and secondly, adding a filler in the step II, and performing vacuum-pumping defoaming treatment for later use.
7. The preparation method of the UV-curable pressure-sensitive adhesive transparent double-sided adhesive film containing chlorinated paraffin according to claim 4, characterized in that: the illumination energy of the UV lamp in the third step is set to be 30mJ/cm2-50 mJ/cm2。
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