1. The pressure-sensitive adhesive protective film is characterized by comprising the following components in percentage by mass:

5 to 25 percent of functional monomer

15-40% of soft monomer;

10-30% of hard monomer;

1-5% of emulsifier;

1-5% of an initiator;

10-35% of deionized water;

1-5% of defoaming agent;

10-15% of aromatic hydrocarbon;

10-20% of barium sulfate master batch.

2. The protective film according to claim 1, wherein: the soft monomer can be one, two or more of isooctyl acrylate, ethyl acrylate, dodecyl acrylate and butyl acrylate.

3. The protective film according to claim 1, wherein: the hard monomer can be one, two or more of methyl methacrylate, vinyl acetate, butyl methacrylate and methyl acrylate.

4. The protective film according to claim 1, wherein: the functional monomer can be one or two or more of glycidyl methacrylate, hydroxyethyl acrylate, acrylic acid, hydroxypropyl acrylate, methacrylic acid and hydroxyethyl methacrylate.

5. The protective film according to claim 1, wherein: the initiator can be one of tartaric acid, tetraethylenepentamine and sodium formaldehyde sulfoxylate.

6. The protective film according to claim 1, wherein: the emulsifier can be one or more of allyl ether sulfonate, acrylamide sulfonate, maleic acid derivative, DNS-86 and sodium alkyl allyl succinate sulfonate.

7. The protective film according to claim 5, wherein: one of tartaric acid, tetraethylenepentamine and sodium formaldehyde sulfoxylate is prepared and formed into a mixture with tert-butyl hydroperoxide.

8. The protective film according to claim 1, wherein: the aromatic hydrocarbon is an aromatic compound.

9. The protective film according to claim 8, wherein: the aromatic compound may be one of xylene, hexamethylbenzene and n-propylbenzene.

10. The method for preparing the pressure-sensitive adhesive protective film according to any one of claims 1 to 9, comprising the steps of:

the method comprises the following steps: sequentially putting the functional monomer, the soft monomer, the hard monomer, the emulsifier and the initiator into deionized water, mixing and stirring at the temperature of 60-80 ℃ for 4-6h to form an emulsion inside the mixture;

step two: changing the temperature to 40-60 ℃, adding the defoaming agent and the aromatic hydrocarbon, stirring again for 1-2 hours, keeping the mixture at 40-60 ℃ for standing, and carrying out standing reaction for 3-5 hours to obtain a first mixed solution;

step three: putting barium sulfate master batches into a grinding machine for grinding and grinding, wherein the diameter of the ground barium sulfate master batches is 5-100nm, weighing and metering the barium sulfate master batches, dividing the barium sulfate master batches into 3 groups according to the same weight, separately placing, carrying out ultraviolet sterilization and disinfection treatment on the surfaces of the barium sulfate master batches during placement for 4-8h, uniformly dispersing 1 group of the barium sulfate master batches into the obtained first mixed solution in an ultrasonic oscillation mode after sterilization is finished, and mixing the first mixed solution with the barium sulfate master batches to obtain the pressure-sensitive adhesive;

step four: reducing the temperature of the pressure-sensitive adhesive to 20-40 ℃, keeping the temperature for 1-2h for reaction, then cooling the pressure-sensitive adhesive to room temperature, connecting the mixing container with a filtering container and a storage container, filtering the pressure-sensitive adhesive in the mixing container according to the filtering standard required by a user, and flowing the filtered pressure-sensitive adhesive into the storage container for storage;

step five: uniformly coating the pressure-sensitive adhesive in the storage container on a base material, sterilizing and disinfecting the base material before coating, and finally putting the pressure-sensitive adhesive protective film into a drying box for drying to obtain a finished product.

Background

The protective film can be divided into a digital product protective film, an automobile protective film, a household protective film, a food fresh-keeping protective film and the like according to the application. With the popularization of digital products such as mobile phones in China, the protective film has become a general name of the screen protective film slowly, and the function of the protective film in the field of screen protective films is also five-flower eight-door.

The existing pressure-sensitive adhesive has general protection, so that the existing pressure-sensitive adhesive is easy to corrode and smell in the environment; therefore, the existing requirements are not met, and a pressure-sensitive adhesive protective film and a preparation method thereof are provided.

Disclosure of Invention

The invention aims to provide a pressure-sensitive adhesive protective film and a preparation method thereof, which aim to solve the problem that the conventional pressure-sensitive adhesive in the background art is easy to corrode and smell in the environment due to general protection.

In order to achieve the purpose, the invention provides the following technical scheme: a pressure-sensitive adhesive protective film comprises the following components in percentage by mass:

5 to 25 percent of functional monomer

20-40% of soft monomer;

15-30% of hard monomer;

1-5% of emulsifier;

1-5% of an initiator;

10-35% of deionized water;

1-5% of defoaming agent;

10-15% of aromatic hydrocarbon;

10-20% of barium sulfate master batch.

Preferably, the soft monomer can be one, two or more of isooctyl acrylate, ethyl acrylate, dodecyl acrylate and butyl acrylate.

Preferably, the hard monomer can be one, two or more of methyl methacrylate, vinyl acetate, butyl methacrylate and methyl acrylate.

Preferably, the functional monomer can be one, two or more of glycidyl methacrylate, hydroxyethyl acrylate, acrylic acid, hydroxypropyl acrylate, methacrylic acid and hydroxyethyl methacrylate.

Preferably, the initiator may be one of tartaric acid, tetraethylenepentamine and sodium formaldehyde sulfoxylate.

Preferably, the emulsifier may be one or more of allyl ether sulfonate, acrylamide sulfonate, maleic acid derivative, DNS-86, and sodium alkyl allyl sulfosuccinate.

Preferably, one of tartaric acid, tetraethylenepentamine and sodium formaldehyde sulfoxylate is prepared and formed into a mixture with tert-butyl hydroperoxide.

Preferably, the aromatic hydrocarbon is an aromatic compound.

Preferably, the aromatic compound may be one of xylene, hexamethylbenzene, and n-propylbenzene.

Preferably, the preparation method of the pressure-sensitive adhesive protective film comprises the following steps:

the method comprises the following steps: sequentially putting the functional monomer, the soft monomer, the hard monomer, the emulsifier and the initiator into deionized water, mixing and stirring at the temperature of 60-80 ℃ for 4-6h to form an emulsion inside the mixture;

step two: changing the temperature to 40-60 ℃, adding the defoaming agent and the aromatic hydrocarbon, stirring again for 1-2 hours, keeping the mixture at 40-60 ℃ for standing, and carrying out standing reaction for 3-5 hours to obtain a first mixed solution;

step three: putting barium sulfate master batches into a grinding machine for grinding and grinding, wherein the diameter of the ground barium sulfate master batches is 5-100nm, weighing and metering the barium sulfate master batches, dividing the barium sulfate master batches into 3 groups according to the same weight, separately placing, carrying out ultraviolet sterilization and disinfection treatment on the surfaces of the barium sulfate master batches during placement for 4-8h, uniformly dispersing 1 group of the barium sulfate master batches into the obtained first mixed solution in an ultrasonic oscillation mode after sterilization is finished, and mixing the first mixed solution with the barium sulfate master batches to obtain the pressure-sensitive adhesive;

step four: reducing the temperature of the pressure-sensitive adhesive to 20-40 ℃, keeping the temperature for 1-2h for reaction, then cooling the pressure-sensitive adhesive to room temperature, connecting the mixing container with a filtering container and a storage container, filtering the pressure-sensitive adhesive in the mixing container according to the filtering standard required by a user, and flowing the filtered pressure-sensitive adhesive into the storage container for storage;

step five: uniformly coating the pressure-sensitive adhesive in the storage container on a base material, sterilizing and disinfecting the base material before coating, and finally putting the pressure-sensitive adhesive protective film into a drying box for drying to obtain a finished product.

Compared with the prior art, the invention has the beneficial effects that:

the invention mixes functional monomer, soft monomer and hard monomer, uses emulsifier to mix the mixed liquid of three components which are not mutually soluble to form emulsion, uses initiator to initiate free radical polymerization and copolymerization of alkene and diene monomers, also can be used for crosslinking solidification and macromolecule crosslinking reaction of unsaturated polyester, the defoaming agent is used to reduce surface tension of water, solution, suspension and the like to prevent foam formation or reduce or eliminate original foam, the aromatic hydrocarbon is hydrocarbon containing benzene ring and aromatic ring structure in molecule, the aromatic hydrocarbon generally contains aromatic taste and has high stability, on one hand, the stability of the pressure-sensitive adhesive protective film can be improved, the tensile force of the protective film can be improved, on the other hand, the aromatic smell can be provided, the pressure-sensitive adhesive protective film is not easy to stink, the gloss and hardness of the whole protective film can be strengthened by adding barium sulfate master batch inside, compared with the common pressure-sensitive adhesive protective film, the invention enhances the comprehensiveness of the pressure-sensitive adhesive protective film, improves the characteristics of stability, tension, glossiness and the like of the protective film, can ensure the enhancement of the fragrance of the protective film, and can be suitable for various working environments needing fragrance prompt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.

Example 1

A pressure-sensitive adhesive protective film comprises the following components in percentage by mass:

17 percent of functional monomer

20% of soft monomer;

15% of hard monomer;

5% of an emulsifier;

5% of an initiator;

10% of deionized water;

5% of defoaming agent;

10% of aromatic hydrocarbon;

13 percent of barium sulfate master batch.

Further, the soft monomer can be one, two or more of isooctyl acrylate, ethyl acrylate, dodecyl acrylate and butyl acrylate.

Further, the hard monomer may be one, two or more of methyl methacrylate, vinyl acetate, butyl methacrylate and methyl acrylate.

Further, the functional monomer can be one, two or more of glycidyl methacrylate, hydroxyethyl acrylate, acrylic acid, hydroxypropyl acrylate, methacrylic acid and hydroxyethyl methacrylate.

Further, the initiator can be one of tartaric acid, tetraethylenepentamine and sodium formaldehyde sulfoxylate.

Further, the emulsifier may be one or more of allyl ether sulfonate, acrylamide sulfonate, maleic acid derivative, DNS-86, and sodium alkyl propenyl sulfosuccinate.

Further, one of tartaric acid, tetraethylenepentamine, and sodium formaldehyde sulfoxylate is prepared as a mixture with t-butyl hydroperoxide.

Further, the aromatic hydrocarbon is an aromatic compound.

Further, the aromatic compound may be one of xylene, hexamethylbenzene, and n-propylbenzene.

Further, the preparation method of the pressure-sensitive adhesive protective film comprises the following steps:

the method comprises the following steps: sequentially putting the functional monomer, the soft monomer, the hard monomer, the emulsifier and the initiator into deionized water, mixing and stirring at the temperature of 60-80 ℃ for 4-6h to form an emulsion inside the mixture;

step two: changing the temperature to 40-60 ℃, adding the defoaming agent and the aromatic hydrocarbon, stirring again for 1-2 hours, keeping the mixture at 40-60 ℃ for standing, and carrying out standing reaction for 3-5 hours to obtain a first mixed solution;

step three: putting barium sulfate master batches into a grinding machine for grinding and grinding, wherein the diameter of the ground barium sulfate master batches is 5-100nm, weighing and metering the barium sulfate master batches, dividing the barium sulfate master batches into 3 groups according to the same weight, separately placing, carrying out ultraviolet sterilization and disinfection treatment on the surfaces of the barium sulfate master batches during placement for 4-8h, uniformly dispersing 1 group of the barium sulfate master batches into the obtained first mixed solution in an ultrasonic oscillation mode after sterilization is finished, and mixing the first mixed solution with the barium sulfate master batches to obtain the pressure-sensitive adhesive;

step four: reducing the temperature of the pressure-sensitive adhesive to 20-40 ℃, keeping the temperature for 1-2h for reaction, then cooling the pressure-sensitive adhesive to room temperature, connecting the mixing container with a filtering container and a storage container, filtering the pressure-sensitive adhesive in the mixing container according to the filtering standard required by a user, and flowing the filtered pressure-sensitive adhesive into the storage container for storage;

step five: uniformly coating the pressure-sensitive adhesive in the storage container on a base material, sterilizing and disinfecting the base material before coating, and finally putting the pressure-sensitive adhesive protective film into a drying box for drying to obtain a finished product.

Example 2

A pressure-sensitive adhesive protective film comprises the following components in percentage by mass:

15 percent of functional monomer

25% of soft monomer;

15% of hard monomer;

5% of an emulsifier;

5% of an initiator;

10% of deionized water;

5% of defoaming agent;

10% of aromatic hydrocarbon;

10% of barium sulfate master batch.

Further, the soft monomer can be one, two or more of isooctyl acrylate, ethyl acrylate, dodecyl acrylate and butyl acrylate.

Further, the hard monomer may be one, two or more of methyl methacrylate, vinyl acetate, butyl methacrylate and methyl acrylate.

Further, the functional monomer can be one, two or more of glycidyl methacrylate, hydroxyethyl acrylate, acrylic acid, hydroxypropyl acrylate, methacrylic acid and hydroxyethyl methacrylate.

Further, the initiator can be one of tartaric acid, tetraethylenepentamine and sodium formaldehyde sulfoxylate.

Further, the emulsifier may be one or more of allyl ether sulfonate, acrylamide sulfonate, maleic acid derivative, DNS-86, and sodium alkyl propenyl sulfosuccinate.

Further, one of tartaric acid, tetraethylenepentamine, and sodium formaldehyde sulfoxylate is prepared as a mixture with t-butyl hydroperoxide.

Further, the aromatic hydrocarbon is an aromatic compound.

Further, the aromatic compound may be one of xylene, hexamethylbenzene, and n-propylbenzene.

Further, the preparation method of the pressure-sensitive adhesive protective film comprises the following steps:

the method comprises the following steps: sequentially putting the functional monomer, the soft monomer, the hard monomer, the emulsifier and the initiator into deionized water, mixing and stirring at the temperature of 60-80 ℃ for 4-6h to form an emulsion inside the mixture;

step two: changing the temperature to 40-60 ℃, adding the defoaming agent and the aromatic hydrocarbon, stirring again for 1-2 hours, keeping the mixture at 40-60 ℃ for standing, and carrying out standing reaction for 3-5 hours to obtain a first mixed solution;

step three: putting barium sulfate master batches into a grinding machine for grinding and grinding, wherein the diameter of the ground barium sulfate master batches is 5-100nm, weighing and metering the barium sulfate master batches, dividing the barium sulfate master batches into 3 groups according to the same weight, separately placing, carrying out ultraviolet sterilization and disinfection treatment on the surfaces of the barium sulfate master batches during placement for 4-8h, uniformly dispersing 1 group of the barium sulfate master batches into the obtained first mixed solution in an ultrasonic oscillation mode after sterilization is finished, and mixing the first mixed solution with the barium sulfate master batches to obtain the pressure-sensitive adhesive;

step four: reducing the temperature of the pressure-sensitive adhesive to 20-40 ℃, keeping the temperature for 1-2h for reaction, then cooling the pressure-sensitive adhesive to room temperature, connecting the mixing container with a filtering container and a storage container, filtering the pressure-sensitive adhesive in the mixing container according to the filtering standard required by a user, and flowing the filtered pressure-sensitive adhesive into the storage container for storage;

step five: uniformly coating the pressure-sensitive adhesive in the storage container on a base material, sterilizing and disinfecting the base material before coating, and finally putting the pressure-sensitive adhesive protective film into a drying box for drying to obtain a finished product.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.