CN108102126B - Highlight film and surface treatment method thereof - Google Patents
Highlight film and surface treatment method thereof Download PDFInfo
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- CN108102126B CN108102126B CN201711466368.7A CN201711466368A CN108102126B CN 108102126 B CN108102126 B CN 108102126B CN 201711466368 A CN201711466368 A CN 201711466368A CN 108102126 B CN108102126 B CN 108102126B
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/123—Treatment by wave energy or particle radiation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
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Abstract
The invention provides a high-gloss film and a surface treatment method thereof. The surface treatment method comprises the steps of coating a surface treatment agent on the surface of a highlight film to obtain a film to be treated; and carrying out radiation crosslinking on the film to be treated to obtain the treated high-brightness film, wherein the surface treating agent is PUA. The surface treatment method of the highlight film comprises the steps of coating the surface treatment modifier on the original highlight film, and then carrying out irradiation crosslinking treatment, so that a crosslinking reaction is generated between molecules on the surface of the film and the surface treatment modifier, the crosslinking density of a polymer on the surface of the highlight film is increased, the wear resistance of the highlight film is improved, and the application range of the highlight film is greatly expanded.
Description
Technical Field
The invention relates to the field of new home decoration materials, in particular to a high-gloss film and a surface treatment method thereof.
Background
Along with the increasing requirements of people on the quality of organisms and the increasingly high requirements on home decoration, the high-grade decorative film is popular in the market at present. Although some high-grade decorative films with higher environmental protection performance are sporadically appeared on the market, the high-grade decorative films are still not the main market at present due to the complex preparation process and high cost.
In view of the existing products made of various materials such as PVC, PP, PMMA, PC, etc., there are many defects in processing and use, and in order to further improve the usability of these materials, the processing technology of the existing materials still needs to be improved.
Disclosure of Invention
The invention mainly aims to provide a high-gloss film and a surface treatment method thereof, so as to improve the scratch resistance of the conventional high-gloss film.
In order to achieve the above object, according to an aspect of the present invention, there is provided a surface treatment method of a highlight film, the surface treatment method including: coating a surface treating agent on the surface of the highlight film to obtain a film to be treated; and carrying out radiation crosslinking on the film to be treated to obtain the treated high-brightness film, wherein the surface treating agent is PUA.
Further, the high-brightness film is a PVC high-brightness film, preferably the composition of the PVC high-brightness film comprises the following components in parts by weight: 100 parts of PVC, 0-10 parts of plasticizer, 1-10 parts of stabilizer, 5-20 parts of MBS impact modifier, 1-5 parts of lubricant and 1-10 parts of crosslinking monomer.
Further, the surface treatment agent is PUA; preferably, the surface of the high-brightness film is coated with the surface treatment agent through a micro-concave roller and a reverse roller, and the wet coating amount of the film to be treated is controlled to be 10-45 g/square meter, more preferably, the thickness of a coating layer coated with the surface treatment agent is 2-45 micrometers, and further preferably, the thickness of the coating layer is 3-30 micrometers.
Further, the surface treatment method comprises the steps of dispersing a surface treatment agent in a solvent to form a surface treatment solution, and coating the surface treatment solution on the surface of the highlight film, wherein the weight concentration of the surface treatment agent in the surface treatment solution is 20-100%; preferably, the solvent of the surface treating agent is butanone or ethyl acetate.
Further, in the step of carrying out radiation crosslinking on the membrane to be processed, the irradiation energy is controlled to be 2-45 KGY, and preferably 12-45 KGY.
Further, in the step of carrying out radiation crosslinking on the film to be processed, the voltage is controlled to be 120-200 KeV.
Further, in the step of carrying out radiation crosslinking on the membrane to be treated, the moving speed of the membrane is controlled to be 5-25 m/min, and preferably 12-25 m/min.
Further, in the step of carrying out radiation crosslinking on the film to be treated, the irradiation time is controlled to be 0.04-10 s.
In order to achieve the above object, according to one aspect of the present invention, there is provided a highlight film obtained by treating with any one of the above surface treatment methods.
In order to achieve the above object, according to one aspect of the present invention, there is provided a highlight film having a pencil hardness of at least H.
By applying the technical scheme, the surface treatment method of the high-brightness film disclosed by the invention has the advantages that after the original high-brightness film is coated with the surface treatment modifier, the molecules on the surface of the film and the surface treatment agent are subjected to irradiation crosslinking treatment, so that the crosslinking reaction is generated, the crosslinking density of high polymers on the surface of the high-brightness film is increased, the wear resistance of the high-brightness film is improved, and the application range of the high-brightness film is greatly expanded.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail with reference to examples.
As mentioned in the background, most PVC home decoration materials on the market can be made into high-quality high-gloss or mirror films, but the PVC materials have the disadvantages of poor temperature resistance, weather resistance and scratch resistance, and the plasticizer precipitation makes the home decoration films more susceptible to aging and poor performance, thereby limiting the extent of use of the home decoration films on the market. In order to improve this situation, in an exemplary embodiment of the present application, there is provided a surface treatment method of a highlight film, the surface treatment method including: coating a surface treating agent on the surface of the highlight film to obtain a film to be treated; carrying out radiation crosslinking on the film to be treated to obtain a treated highlight film; wherein the surface treating agent is PUA.
The surface treatment method of the highlight film comprises the steps of coating the surface treatment modifier on the original highlight film, and then carrying out irradiation crosslinking treatment, so that a crosslinking reaction is generated between molecules on the surface of the film and the surface treatment modifier, the crosslinking density of a polymer on the surface of the highlight film is increased, the wear resistance of the highlight film is improved, and the application range of the highlight film is greatly expanded.
It should be noted that the irradiation crosslinking is preferably performed under the protection of nitrogen (oxygen-free condition). On the one hand, the irradiation efficiency and the gel (crosslinking product) content of the system can be increased, and on the other hand, the degradation of the system and the possibility of oxidation can be reduced. This effect is minimal for thicker film articles, since oxidation and degradation only occur at the surface of the polymer.
The surface treatment method can be applied to various conventional high-brightness films. In a preferred embodiment of the present application, the highlight film is a PVC highlight film. The scratch resistance of the surface of the PVC highlight film treated by the surface treatment method is improved more obviously. More preferably, the PVC highlight film comprises, by weight, 100 parts of PVC, 0-10 parts of a plasticizer, 1-10 parts of a stabilizer, 5-20 parts of an MBS impact modifier, 1-5 parts of a lubricant and 1-10 parts of a crosslinking monomer (such as TMPTA).
In the preferred embodiment, the plasticizer is 0, i.e., some PVC products do not contain plasticizer according to actual needs. MBS is a terpolymer of MMA, butadiene and styrene, has good compatibility with PVC, and does not affect the transparency of PVC. In the formula of the PVC high-brightness film, the surface treatment agent is coated on the surface, and the crosslinking density of the surface coating of the scratch-resistant film (the scratch resistance of the surface coating) is improved through irradiation crosslinking, but the surface crosslinking density of the bottom film is not improved. The formula of the PVC high-light film simultaneously contains 1-10 parts of crosslinking monomer, and the crosslinking monomer can be used for improving or reducing the influence of irradiation electron beams on a bottom film (namely the PVC high-light film).
Plasticizers for radiation cross-linking PVC are generally selected for their high molecular mass and high boiling point. It is generally considered that as the amount of the plasticizer is increased, the crosslinking efficiency is decreased and the gel (crosslinked product) content is decreased. The reason is that the distance between PVC macromolecules is increased along with the increase of the dosage of the plasticizer, the collision opportunities between PVC molecular chain free radicals and between PVC free radicals and acrylate unsaturated monomer free radicals are reduced, and a cross-linking structure is not easy to form. In addition, the plasticizer can also absorb part of the irradiation energy, so that the irradiation energy absorbed by PVC macromolecules is relatively reduced, and free radicals are not easy to form. However, studies have shown that, when the radiation effect of the DBP/PVC system is studied, it is found that the gel content increases with increasing DBP content. Stabilizers have also been reported to reduce degradation of PVC caused by irradiation.
Therefore, in the preferred embodiment, 0 to 10 parts of plasticizer is used for the PVC highlight film, and more preferably, 2 to 10 parts of epoxidized soybean oil (ESPO) is generally added, so that the color yellowing of the highlight film after irradiation crosslinking can be reduced. And the MBS impact modifier contained in the PVC high-brightness film is also beneficial to improving the irradiation crosslinking efficiency. The stabilizers with the above contents and types are helpful for improving the stability of PVC in the irradiation process, thereby improving the indicated irradiation crosslinking efficiency.
The crosslinking method of PVC includes chemical crosslinking method and radiation crosslinking method. Chemical means that chemical cross-linking agents and other auxiliary agents are added into the formula, and the cross-linking is completed by enabling the chemical cross-linking agents and the other auxiliary agents to react with PVC in a heat-induced mode under the conditions of heating and pressurizing. In the method, because the molding and crosslinking are finished in a unified process, the gel is too early before the product is molded, and the processing and the service performance of the product are influenced. The radiation crosslinking is completed by two procedures of molding and crosslinking, so that the crosslinking degree can be accurately controlled, and the product quality is high.
When pure PVC molecules are subjected to radiation crosslinking, valuable modified PVC materials are difficult to obtain due to the problems of dehydrochlorination, bond breaking, color change and the like. In the prior art, it is reported that the performance of PVC is greatly improved by irradiation with a dose of less than 10kGy in the presence of polyfunctional monomers such as TMPTMA (trimethylolpropane trimethacrylate), TMPTA (trimethylolpropane triacrylate) and the like, and the PVC can be used as a conductive insulating material and various pipe fittings. Thus, according to the difference of the types and performances of the high gloss films to be treated, the application of different types of surface treatment agents helps to reduce the breakage and discoloration of molecular chains on the surface of the high gloss films, and contributes greatly to the formation of gels. In a preferred embodiment of the present application, the surface treatment agent is PUA (urethane acrylate). The surface treating agent has the advantage of high crosslinking efficiency with a high light film.
The specific coating mode, the coating thickness and the like of the surface treating agent can be reasonably selected according to actual needs. In a preferred embodiment of the present application, the surface of the high gloss film is coated with the surface treatment agent by reverse roll coating via a micro-concave roll, and the wet coating amount of the obtained film to be treated is controlled to be 10 to 45 g/m, more preferably the coating thickness of the surface treatment agent is 2 to 45 micrometers, and still more preferably 3 to 30 micrometers. The thicker the coating thickness, the better the scratch resistance of the coating. Controlling the coating weight and thickness of the surface treatment agent within the above ranges can make the irradiation crosslinking effect of the surface good.
The concentration of the surface treatment agent used also varies from highlight film to highlight film and from performance to performance. In a preferred embodiment of the present application, the surface treatment method comprises dispersing the surface treatment agent in a solvent to form a surface treatment solution, and coating the surface treatment solution on the surface of the high gloss film, wherein the weight concentration of the surface treatment agent in the surface treatment solution is 20-100%. The concentration of the surface treatment agent is controlled within the range, so that the beneficial effects of uniform coating and improvement of subsequent crosslinking effect are achieved. The solvent for dissolving the surface treating agent is organic solvent, and is selected from butanone or ethyl acetate.
In the surface treatment method, aiming at different high-light films, such as PVC high-light films, the PVC cross-linking can be in the best state by controlling the irradiation cross-linking time and dosage in a proper range, and the occurrence of degradation reaction is avoided. In general, in the case of a crosslinked polymer, as the irradiation time and dose are increased, the crosslinking efficiency is improved, the gel content is increased, and the crosslinking density of the polymer is increased. When the dose reaches a certain value, the gel content no longer increases, but tends to a constant value. If the radiation dose continues to increase, the PVC can degrade and discolor, thereby interfering with use. In a preferred embodiment of the present application, in the step of performing radiation crosslinking on the film to be processed, the irradiation energy is controlled to be 2 to 45KGY, preferably 12 to 45 KGY. By controlling the irradiation energy within the range, the crosslinking efficiency of the surfaces of various highlight films can be high, the crosslinking density of surface molecules can be increased, and the surface scratch resistance of the highlight films can be improved. Particularly, the scratch resistance of the PVC highlight film is improved more obviously.
Similarly, in general, the longer the irradiation time, the higher the degree of crosslinking at a certain irradiation energy. However, the time is too long, and the PVC is easy to degrade and discolor along with the increase of total irradiation energy, so that the service performance is influenced. In a preferred embodiment of the present application, in the step of performing radiation crosslinking on the film to be treated, the irradiation time is controlled to be 0.04 to 10 seconds. The irradiation is carried out for the above time under the preferable irradiation energy, so that the crosslinking efficiency is high, the degradation or color change of the film is not easily caused, the surface hardness is obviously improved, and the scratch resistance is obviously improved.
In a preferred embodiment of the present application, in the step of performing radiation crosslinking on the film to be treated, the vehicle speed is controlled to be 5-25 m/min, preferably 12-25 m/min. The "vehicle speed" herein refers to the moving speed of the film. The vehicle speed is controlled within the range, so that the micro-gravure roll coating surface effect is smooth, and the micro-gravure roll coating surface effect is smoother within the vehicle speed range of 12-25 m/min.
The degradation of PVC and HCl removal reaction are easy to accelerate due to the overhigh irradiation temperature, the cross-linked structure is complicated, and the performance of the cross-linked product is deteriorated. And the irradiation temperature can be controlled by controlling the voltage in practical application. In order to further optimize the radiation crosslinking efficiency, in a preferred embodiment of the present application, the voltage is controlled to be 120KeV to 200KeV in the step of radiation crosslinking the film to be treated. The voltage is controlled within the preferred range so that the crosslinking reaction rate is fast and the crosslinking density is high.
In another exemplary embodiment of the present application, a high gloss film is provided, which is obtained by treating the high gloss film with any one of the above surface treatment methods. In another exemplary embodiment, a high gloss film having a pencil hardness of at least H is provided. The hardness of the highlight film treated by the surface treatment method is remarkably improved, the scratch resistance is remarkably enhanced, and the application of the highlight film such as PVC (polyvinyl chloride) in high-grade home decoration film utilization is favorably expanded.
The advantageous effects of the present application will be further described with reference to specific examples. In the following examples, the hardness was measured based on pencil hardness. Specifically, among pencil hardnesses: b represents blackness, H represents hardness, and the larger the number of B, the darker the pencil and the softer the pencil. The harder the H the more the color. The pencil hardness grades are from soft to hard as follows: 6B, 5B, 4B, 3B, 2B, HB, F, H, 2H, 3H, 4H, 5H, 6H, 7H, 8H, 9H.
Example 1
Coating PUA with the concentration of 75 wt% on the surface of a PVC high-gloss film with the pencil hardness of 4B through a micro-concave roller reverse roller to obtain a film to be treated, wherein the wet coating amount is 40 g/square meter, and the coating thickness is 30 micrometers; the PVC high-brightness film comprises the following raw materials in parts by weight: 100 parts of PVC, 6 parts of DBP plasticizer, 4 parts of barium-zinc stabilizer, 15 parts of MBS impact modifier, 2 parts of lubricant and 6 parts of TMPTA crosslinking monomer.
And (3) placing the membrane to be treated under an electron beam with the voltage of 150KeV and the irradiation energy of 25KGY for irradiation crosslinking, and controlling the moving speed of the membrane to be controlled to be 10m/min and the irradiation time to be 0.12s in the irradiation crosslinking process to obtain the treated PVC highlight membrane.
The pencil hardness of the PVC high-light film is detected, and the detection result shows that the pencil hardness of the treated PVC high-light film is 3H.
Example 2
Coating PUA with the concentration of 20 wt% on the surface of a PVC highlight film with the pencil hardness of 4B through a micro-concave roller reverse roller to obtain a film to be treated, wherein the wet coating amount is 15 g/square meter, and the coating thickness is 3 micrometers; the PVC high-brightness film comprises the following raw materials in parts by weight: 100 parts of PVC, 1 part of barium-zinc stabilizer, 5 parts of MBS impact modifier, 1 part of lubricant and 1 part of TMPTA crosslinking monomer.
And (3) placing the membrane to be treated under an electron beam with the voltage of 120KeV and the irradiation energy of 12KGY for irradiation crosslinking, and controlling the speed of the vehicle to be 12m/min and the irradiation time to be 0.1s in the irradiation crosslinking process to obtain the treated PVC highlight membrane.
The pencil hardness of the PVC high-light film is detected, and the detection result shows that the pencil hardness of the treated PVC high-light film is 2H.
Example 3
Coating PUA with the concentration of 100 wt% on the surface of a PVC highlight film with the pencil hardness of 4B through a micro-concave roller reverse roller to obtain a film to be treated, wherein the wet coating amount is 10 g/square meter, and the coating thickness is 10 micrometers; the PVC high-brightness film comprises the following raw materials in parts by weight: 100 parts of PVC, 10 parts of DBP plasticizer, 10 parts of barium-zinc stabilizer, 20 parts of MBS impact modifier, 5 parts of lubricant and 10 parts of TMPTA crosslinking monomer.
And (3) placing the membrane to be treated under an electron beam with the voltage of 200KeV and the irradiation energy of 45KGY for irradiation crosslinking, and controlling the speed of 25m/min and the irradiation time of 0.048s in the irradiation crosslinking process to obtain the treated PVC highlight membrane.
The pencil hardness of the PVC high-light film is detected, and the detection result shows that the pencil hardness of the treated PVC high-light film is 2H.
Example 4
Coating PUA with the concentration of 100 wt% on the surface of a PP highlight film with the pencil hardness of 4B through a micro-concave roller reverse roller to obtain a film to be treated, wherein the wet coating amount is 45 g/square meter, and the coating thickness is 45 micrometers;
and (3) placing the membrane to be treated under an electron beam with the voltage of 200KeV and the irradiation energy of 45KGY for irradiation crosslinking, and controlling the speed of 25m/min and the irradiation time of 0.048s in the irradiation crosslinking process to obtain the treated PVC highlight membrane.
The pencil hardness of the PVC high-light film is detected, and the detection result shows that the pencil hardness of the treated PVC high-light film is 3H.
Example 5
Coating PUA with the concentration of 50 wt% on the surface of a PVC highlight film with the pencil hardness of 4B through a micro-concave roller reverse roller to obtain a film to be treated, wherein the wet coating amount is 45 g/square meter, and the coating thickness is 22.5 micrometers; the PVC high-brightness film comprises the following raw materials in parts by weight: 100 parts of PVC, 10 parts of DBP plasticizer, 10 parts of barium-zinc stabilizer, 20 parts of MBS impact modifier, 5 parts of lubricant and 10 parts of TMPTA crosslinking monomer.
And (3) placing the membrane to be treated under an electron beam with the voltage of 200KeV and the irradiation energy of 45KGY for irradiation crosslinking, and controlling the speed of 15m/min and the irradiation time of 0.1s in the irradiation crosslinking process to obtain the treated PVC highlight membrane.
The pencil hardness of the PVC high-light film is detected, and the detection result shows that the pencil hardness of the treated PVC high-light film is 2H.
Example 6
Coating PUA with the concentration of 10 wt% on the surface of a PVC highlight film with the pencil hardness of 4B through a micro-concave roller reverse roller to obtain a film to be treated, wherein the wet coating amount is 45 g/square meter, and the coating thickness is 4.5 micrometers; the PVC high-brightness film comprises the following raw materials in parts by weight: 100 parts of PVC, 10 parts of DBP plasticizer, 10 parts of barium-zinc stabilizer, 20 parts of MBS impact modifier, 5 parts of lubricant and 10 parts of TMPTA crosslinking monomer.
And (3) placing the membrane to be treated under an electron beam with the voltage of 200KeV and the irradiation energy of 45KGY for irradiation crosslinking, and controlling the speed of 25m/min and the irradiation time of 10s in the irradiation crosslinking process to obtain the treated PVC highlight membrane.
The pencil hardness of the PVC high-light film is detected, and the detection result shows that the pencil hardness of the treated PVC high-light film is 2H.
Example 7
Coating PUA with the concentration of 100 wt% on the surface of a PVC highlight film with the pencil hardness of 4B through a micro-concave roller reverse roller to obtain a film to be treated, wherein the wet coating amount is 45 g/square meter, and the coating thickness is 45 micrometers; the PVC high-brightness film comprises the following raw materials in parts by weight: 100 parts of PVC, 10 parts of DBP plasticizer, 10 parts of barium-zinc stabilizer, 20 parts of MBS impact modifier, 5 parts of lubricant and 10 parts of TMPTA crosslinking monomer.
And (3) placing the membrane to be treated under an electron beam with the voltage of 100KeV and the irradiation energy of 45KGY for irradiation crosslinking, and controlling the speed of 25m/min and the irradiation time of 10s in the irradiation crosslinking process to obtain the treated PVC highlight membrane.
The pencil hardness of the PVC high-light film is detected, and the detection result shows that the pencil hardness of the treated PVC high-light film is 2H.
Example 8
Coating PUA with the concentration of 30 wt% on the surface of a PVC highlight film with the pencil hardness of 4B through a micro-concave roller reverse roller to obtain a film to be processed, wherein the wet coating amount is 10 g/square meter, and the coating thickness is 3 micrometers; the PVC high-brightness film comprises the following raw materials in parts by weight: 100 parts of PVC, 1 part of barium-zinc stabilizer, 5 parts of MBS impact modifier, 1 part of lubricant and 1 part of TMPTA crosslinking monomer.
And (3) placing the membrane to be treated under an electron beam with the voltage of 200KeV and the irradiation energy of 2KGY for irradiation crosslinking, and controlling the speed of the vehicle to be 5m/min and the irradiation time to be 10s in the irradiation crosslinking process to obtain the treated PVC highlight membrane.
The pencil hardness of the PVC high-light film is detected, and the detection result shows that the pencil hardness of the treated PVC high-light film is H.
Example 9
Coating PUA with the concentration of 100 wt% on the surface of a PVC highlight film with the pencil hardness of 4B through a micro-concave roller reverse roller to obtain a film to be processed, wherein the wet coating amount is 45 g/square meter, and the coating thickness is 45 micrometers; the PVC high-brightness film comprises the following raw materials in parts by weight: 100 parts of PVC, 10 parts of DBP plasticizer, 10 parts of barium-zinc stabilizer, 20 parts of MBS impact modifier, 5 parts of lubricant and 10 parts of TMPTA crosslinking monomer.
And (3) placing the membrane to be treated under an electron beam with the voltage of 200KeV and the irradiation energy of 45KGY for irradiation crosslinking, and controlling the speed of the vehicle to be 26m/min and the irradiation time to be 10s in the irradiation crosslinking process to obtain the treated PVC highlight membrane.
The pencil hardness of the PVC high-light film is detected, and the detection result shows that the pencil hardness of the treated PVC high-light film is H.
Example 10
Coating PUA with the concentration of 10 wt% on the surface of a PVC highlight film with the pencil hardness of 4B through a micro-concave roller reverse roller to obtain a film to be treated, wherein the wet coating amount is 45 g/square meter, and the coating thickness is 45 micrometers; the PVC high-brightness film comprises the following raw materials in parts by weight: 100 parts of PVC, 10 parts of DBP plasticizer, 10 parts of barium-zinc stabilizer, 20 parts of MBS impact modifier, 5 parts of lubricant and 10 parts of TMPTA crosslinking monomer.
And (3) placing the membrane to be treated under an electron beam with the voltage of 200KeV and the irradiation energy of 45KGY for irradiation crosslinking, and controlling the speed of 15m/min and the irradiation time of 15s in the irradiation crosslinking process to obtain the treated PVC highlight membrane.
The pencil hardness of the PVC high-light film is detected, and the detection result shows that the pencil hardness of the treated PVC high-light film is H.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects: the surface treatment method of the highlight film comprises the steps of coating the surface treatment modifier on the original highlight film, and then carrying out irradiation crosslinking treatment, so that a crosslinking reaction is generated between molecules on the surface of the film and the surface treatment modifier, the crosslinking density of a polymer on the surface of the highlight film is increased, the wear resistance of the highlight film is improved, and the application range of the highlight film is greatly expanded.
Furthermore, for the modification of PVC by radiation crosslinking, the theory of crosslinking mechanism, crosslinking reaction kinetics, crosslinking network structure, crosslinking influencing factors and the like is becoming more and more mature. However, because the radiation process has more influencing factors, and inconsistent conclusions exist about the influence of the plasticizer on the crosslinking efficiency, the influence of the processing aid on the crosslinking mechanism and the crosslinking reaction kinetics, and the influencing mechanisms of the stabilizer, the filler and the like, the PVC radiation crosslinking reaction mechanism and the influence of various processing aids on the crosslinking reaction are still the research direction of the current PVC film performance improvement. In the preferred embodiment of the present application, the PVC highlight film with specific components is subjected to irradiation crosslinking under specific irradiation conditions under the treatment of the specific surface treatment agent, so that the hardness of the obtained PVC radiation crosslinked product is greatly improved, and the grade of the current PVC highlight film is further improved, thereby widening the application range of the PVC highlight film.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A surface treatment method of a highlight film, characterized by comprising:
coating a surface treatment agent on the surface of the high-brightness film to obtain a film to be treated; and
radiating the film to be treated to obtain a treated highlight film;
wherein the surface treating agent is PUA, the high-brightness film is PVC high-brightness film, in the step of radiating the film to be treated, the irradiation energy is controlled to be 2-45 KGY, the control voltage is 120-200 KeV, the moving speed of the control film is 5-25 m/min, the irradiation time is controlled to be 0.04-10 s,
the PVC high-brightness film comprises the following components in parts by weight: 100 parts of PVC, 0-10 parts of plasticizer, 1-10 parts of stabilizer, 5-20 parts of MBS impact modifier, 1-5 parts of lubricant and 1-10 parts of crosslinking monomer, wherein the surface of the highlight film is coated with the surface treating agent through a micro-concave roller reverse roller, the wet coating amount of the film to be treated is controlled to be 10-45 g/square meter, and the thickness of a coating layer coated with the surface treating agent is 2-45 micrometers.
2. The surface treatment method according to claim 1, wherein a thickness of a coating layer to which the surface treatment agent is applied is 3 to 30 μm.
3. The surface treatment method according to claim 1, wherein the surface treatment agent is dispersed in a solvent to form a surface treatment solution, and the surface treatment solution is applied to the surface of the high gloss film, wherein the weight concentration of the surface treatment agent in the surface treatment solution is 20 to 100%.
4. The surface treatment method according to claim 3, wherein a solvent of the surface treatment liquid is methyl ethyl ketone or ethyl acetate.
5. The surface treatment method according to claim 1, wherein in the step of irradiating the film to be treated, irradiation energy is controlled to be 12 to 45 KGY.
6. The surface treatment method according to claim 1, wherein in the step of irradiating the film to be treated, a moving speed of the film is controlled to be 12 to 25 m/min.
7. A high gloss film obtained by the surface treatment method according to any one of claims 1 to 6.
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