PP plastic floor primer and preparation method thereof

Abstract

The invention discloses a PP plastic floor primer and a preparation method thereof. The PP plastic floor primer comprises the following components in parts by weight: 20-30 parts of chlorinated resin, 13-27 parts of a solvent, 10-20 parts of an emulsifier, 1-4 parts of a silane coupling agent and 40-60 parts of water. According to the PP plastic floor primer and the preparation method thereof, the preparation process is simple, operation is convenient, and remarkable economic benefits, social benefits and environmental benefits are achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of coatings and relates to a primer, in particular to a PP plastic floor primer and a preparation method thereof. Background Art

[0002] PP plastic floor is a plastic floor used to replace PVC. It uses PP recycled materials or new PP materials, and is mixed with resin, filler (generally talcum powder and stone powder) and toughening agent. In order to improve the flame retardancy of PP materials, PP flame retardant is added to ensure that the fire resistance level of PP floor can reach B1. The raw materials PP, stone powder, talcum powder, toughening agent, and flame retardant are processed by screw extrusion, and a substrate with stable thickness is produced through process and formula adjustment. Furthermore, PP plastic floor adopts two bonding methods. One is online bonding during substrate extrusion. This mode has high requirements for the bonding between the wear-resistant layer, color film and substrate. The semi-finished PP plastic floor is produced by hot pressing with embossing rollers and rubber rollers under high temperature conditions. Another way is that after the PP substrate is produced, the surface is bonded with glue. The surface is composed of a wear-resistant layer and a color film, that is, pre-bonding and forming a certain embossing, the surface and the substrate are combined by glue, and then cold pressed and cured to obtain a semi-finished PP plastic floor. The semi-finished products produced by the two methods are then coated to obtain scratch-resistant and wear-resistant PP plastic flooring. Through formula design and process improvement, the PP plastic flooring has the characteristics of fireproof, quiet, waterproof, mildew-proof, wear-resistant and scratch-resistant. It is used to replace PVC flooring, improving the problems of traditional PVC flooring containing chloride ions, easy discoloration, poor dimensional stability, etc. It can be applied to a variety of usage scenarios and has broad market prospects.

[0003] However, poor adhesion of glue on the surface of polypropylene plastic (PP plastic) is a global problem. This is because PP has low surface energy and poor wetting ability; high crystallinity and strong solvent resistance; very small polarity and strong intermolecular repulsion. Therefore, the reaction ability of the PP plastic surface and the functional groups in the glue film-forming material must be studied to further enhance the adhesion between the PP plastic surface and the glue film-forming material. PP materials, modified PP materials, and recycled PP miscellaneous materials are subjected to surface treatments of different processes on their surfaces. For example, when spraying, gluing, and vacuum plating, the surface of the PP material will be pre-treated to enhance its surface adhesion performance. Common ones include corona treatment and flame treatment. With the development of surface treatment technology, plasma treatment methods and PP primer treatment methods are increasingly used. Different surface treatment technologies have different effects. For example, the corona treatment method is to degrade the PP material molecules by breaking the chemical bonds, so that the surface roughness and surface area increase. At the same time, the molecular oxidation of the corona produces groups with strong polarity, which can increase the surface energy and promote adhesion. Flame treatment is to apply gas flame to the surface of PP material, and enhance the adhesion properties by rapid surface heating and molecular fracture to enhance polar functional groups. Plasma treatment method is to generate plasma through discharge and high-frequency electromagnetic vibration to improve the surface bonding properties of PP material.

[0004] However, most of the traditional PP treatment agents are too corrosive to the surface of PP plastic, resulting in excessive damage to the surface of the board, which in turn causes damage to other layers. In addition, the traditional PP primer has high requirements for the cleanliness of the spraying environment and the surface of the PP substrate. For substrates with low surface cleanliness, the bonding effect between PP material and paint or glue is poor, and the adhesion is unstable.

[0005] In view of this, there is an urgent need to design a new PP primer to overcome at least some of the above-mentioned defects of the existing PP primer. Summary of the invention

[0006] The invention provides a PP plastic floor primer and a preparation method thereof, which can promote the combination between PP material and paint or glue and make the adhesion more stable.

[0007] To solve the above technical problem, according to one aspect of the present invention, the following technical solution is adopted:

[0008] A PP plastic floor primer comprises: 20 to 30 parts by weight of chlorinated resin, 13 to 27 parts by weight of solvent, 10 to 20 parts by weight of emulsifier, 1 to 4 parts by weight of silane coupling agent and 40 to 60 parts by weight of water.

[0009] As an embodiment of the present invention, the chlorinated resin is at least one of chlorinated polypropylene CPP, chlorinated polyethylene CPE, chlorinated EVA, high chloride vinyl HCPE, modified chlorinated PP and MP chloroether resin.

[0010] As an embodiment of the present invention, the weight average molecular weight of the chlorinated resin is 20,000 to 70,000; the chlorine content of the chlorinated resin is between 18% and 67%;

[0011] The chlorinated polypropylene (CPP) is at least one of maleic anhydride-modified chlorinated polypropylene, amine-modified chlorinated polypropylene and acrylate-modified chlorinated polypropylene.

[0012] As an embodiment of the present invention, the solvent is at least one of ethanol, isopropanol, acetone, ethyl acetate, butyl acetate, trichloroethane, pentachloroethane, trichloroethylene and tetrachloroethylene;

[0013] The emulsifier is at least one of sodium dodecylbenzene sulfonate LAS, fatty alcohol polyoxyethylene ether sodium sulfate AES, fatty alcohol polyoxyethylene ether AEO series and nonylphenol polyoxyethylene ether OP series.

[0014] As an embodiment of the present invention, the silane coupling agent is at least one of vinyl triisopropoxy silane, γ-(methacryloyloxy)propyl trimethoxy silane and vinyl trimethoxy silane;

[0015] The water is at least one of ultrapure water, deionized water, double distilled water, pure water or distilled water.

[0016] According to another aspect of the present invention, the following technical scheme is adopted: a method for preparing the above-mentioned PP plastic floor primer, the preparation method comprising:

[0017] Step S1, stirring and dispersing the chlorinated resin in a solvent at a high speed to dissolve it uniformly, thereby obtaining a first solution;

[0018] Step S2, adding an emulsifier to water in a set proportion to obtain an emulsifier solution; simultaneously dripping the emulsifier solution into the first solution for 2 to 3 hours and stirring thoroughly;

[0019] Step S3, adding a silane coupling agent and mixing it before the completion of the dropwise addition for a first set time, and continuing to dropwise add for a second set time to obtain a third solution; and continuing to stir for 1 to 1.5 hours after the dropwise addition is completed;

[0020] Step S4, adding water to dilute the third solution to obtain a fourth solution, thereby preparing the primer for the PP plastic floor.

[0021] As an embodiment of the present invention, in step S1, the chlorinated resin and the solvent are put into a reactor, the stirring system is turned on, and the mixture is heated to 10-40° C. to uniformly disperse and dissolve the solid to obtain a first solution;

[0022] In step S2, after stirring for 2 to 20 minutes, when the temperature is maintained at 10 to 40° C., the emulsifier solution prepared by the emulsifier and water is added dropwise to the first solution for 2 to 3 hours with sufficient stirring;

[0023] In step S3, 5 to 20 minutes before the completion of the dropwise addition, a silane coupling agent is added and mixed, and the dropwise addition is continued for 5 to 20 minutes to obtain a third solution, which is kept at a constant temperature of 20 to 40° C. for 1 to 1.5 hours;

[0024] In step S4, the mixture is cooled to below 30° C. and diluted with water to obtain a fourth solution, and then discharged to obtain the primer for the PP plastic floor.

[0025] As an embodiment of the present invention, in step S1, the mass ratio of the chlorinated resin to the solvent in the first solution is 20-30:13-27.

[0026] The beneficial effects of the present invention are as follows: the PP plastic floor primer and the preparation method thereof proposed in the present invention have low requirements on the cleanliness of the spraying environment and the surface of the PP substrate, can remove oil stains on the surface of the substrate, and can also promote the combination between the PP material and the paint or glue to make the adhesion more stable.

[0027] The PP primer of the present invention can be flame-free and wet-sprayable, and can be used conveniently and quickly in scenes such as hand spray lines or automatic lines; the primer of the present invention has strong compatibility with glue resins, and therefore has a wide range of applications, and can replace traditional surface adhesion improvement methods. The PP primer is used to generate a film layer with double-sided adhesion, and based on intermolecular interaction forces and chemical bonding forces, the adhesion of the glue to the substrate is enhanced while the substrate is fully wetted, thereby improving the adhesion properties of the PP material surface.

[0028] The primer prepared by the present invention only has a weak erosion effect on the surface of the PP plastic, and will not cause damage to other layers. The primer prepared by the present invention has strong adhesion and is not only suitable for pure PP materials, but also for impure PP materials and even modified PP materials, and can improve the water resistance, oil resistance and hardness of the coating.

[0029] The primer prepared by the present invention can effectively solve the problems of poor adhesion, paint peeling and poor adhesion in a 100-grid test of paint on a PP substrate that has not been treated with combustion flame, plasma, corona, surface grinding, etc., and is widely applicable to spraying paint systems such as ordinary color paint, rubber paint, PU paint, UV paint, etc. on PP substrates, and is also applicable to glue systems such as PU.

[0030] The PP primer prepared by the present invention can effectively wet the surface of the PP substrate, form a thick film, and promote the adhesion of paint or glue to the film layer. At the same time, the chlorinated resin diffuses into the interior of the substrate to enhance the intermolecular force and forms a chemical bond with the paint or glue to enhance the adhesion performance.

[0031] The primer prepared by the present invention has a relatively simple processing and production process flow, is easy to operate, has low requirements for supporting facilities, is convenient to construct and easy to implement, has a short surface drying time, and has a wide source of processed raw materials, which are economically available, non-toxic and environmentally friendly. It alleviates the problem that the existing process may cause harm to human health and the environment, and has significant economic benefits, social benefits and environmental benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 The present invention is a flowchart of a method for preparing a PP plastic floor primer in one embodiment of the present invention. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0034] In order to further understand the present invention, preferred embodiments of the present invention are described below in conjunction with examples. However, it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the claims of the present invention.

[0035] The description in this section is only for several typical embodiments, and the present invention is not limited to the scope of the embodiments. The same or similar prior art means and some technical features in the embodiments are mutually replaced within the scope of the present invention.

[0036] Numerical ranges in this application are approximate values, so unless otherwise specified, they may include numerical values ​​outside the range. Numerical ranges include all numerical values ​​from the lower limit to the upper limit increased by 1 unit, provided that there is an interval of at least 2 units between any lower value and any higher value. For example, if the recorded component, physical or other properties (such as molecular weight, melt index, etc.) are 100 to 1000, it means that all single values ​​are clearly listed, such as 100, 101, 102, etc., and all sub-ranges, such as 100 to 166, 155 to 170, 198 to 200, etc. For a range containing a numerical value less than 1 or containing a fraction greater than 1 (such as 1.1, 1.5, etc.), 1 unit is appropriately regarded as 0.0001, 0.001, 0.01 or 0.1. For a range containing a single digit less than 10 (such as 1 to 5), 1 unit is usually regarded as 0.1. These are only specific examples of what is intended to be expressed, and all possible combinations of values ​​between the lowest and highest values ​​listed are considered to be clearly recorded in this application. It should also be noted that the terms "first", "second", etc. in this article do not limit the order of precedence, but are only used to distinguish substances with different structures.

[0037] When used with respect to chemical compounds, unless expressly specified otherwise, the singular includes all isomeric forms and vice versa (e.g., "hexane" includes all isomers of hexane, individually or collectively). In addition, nouns using "a," "an," or "the" also include their plural forms unless expressly specified otherwise.

[0038] The terms "comprising", "including", "having" and their derivatives do not exclude the presence of any other components, steps or processes, and are irrelevant to whether these other components, steps or processes are disclosed in this application. To eliminate any doubt, unless explicitly stated, all compositions using the terms "comprising", "including", or "having" in this application may include any additional additives, adjuvants or compounds. On the contrary, except for those necessary for operating performance, the term "essentially consisting of..." excludes any other components, steps or processes from the scope of any description of the term below. The term "consisting of..." does not include any components, steps or processes that are not specifically described or listed. Unless explicitly stated, the term "or" refers to the listed individual members or any combination thereof.

[0039] The description of the steps in each embodiment in the specification is only for the convenience of explanation, and the implementation method of the present application is not limited by the order of implementation of the steps.

[0040] The invention discloses a PP plastic floor primer, which comprises: 20 to 30 parts by weight of chlorinated resin, 13 to 27 parts by weight of solvent, 10 to 20 parts by weight of emulsifier, 1 to 4 parts by weight of silane coupling agent and 40 to 60 parts by weight of water.

[0041] In one embodiment of the present invention, the chlorinated resin is at least one of chlorinated polypropylene CPP, chlorinated polyethylene CPE, chlorinated EVA, high chloride vinyl HCPE, modified chlorinated PP and MP chloroether resin.

[0042] In one embodiment of the present invention, the weight average molecular weight of the chlorinated resin is 20,000 to 70,000; the chlorine content of the chlorinated resin is between 18% and 67%; and the chlorinated polypropylene CPP is at least one of maleic anhydride-modified chlorinated polypropylene, amine-modified chlorinated polypropylene and acrylate-modified chlorinated polypropylene.

[0043] The solvent may be at least one of ethanol, isopropanol, acetone, ethyl acetate, butyl acetate, trichloroethane, pentachloroethane, trichloroethylene and tetrachloroethylene; the emulsifier may be at least one of sodium dodecylbenzene sulfonate LAS, fatty alcohol polyoxyethylene ether sodium sulfate AES, fatty alcohol polyoxyethylene ether AEO series and nonylphenol polyoxyethylene ether OP series.

[0044] The silane coupling agent may be at least one of vinyl triisopropoxy silane, γ-(methacryloyloxy)propyl trimethoxy silane and vinyl trimethoxy silane; the water may be at least one of ultrapure water, deionized water, double distilled water, pure water or distilled water.

[0045] The present invention further discloses a method for preparing the above-mentioned PP plastic floor primer. Figure 1 This is a flow chart of a method for preparing a PP plastic floor primer according to an embodiment of the present invention; please refer to Figure 1 , the preparation method comprises:

[0046] [Step S1] Dispersing the chlorinated resin in a solvent at a high speed by stirring and dissolving it uniformly to obtain a first solution;

[0047] [Step S2] adding an emulsifier to water in a set proportion to obtain an emulsifier solution; simultaneously dripping the emulsifier solution into the first solution for 2 to 3 hours with sufficient stirring;

[0048] [Step S3] Add a silane coupling agent and mix for a first set time before the dropwise addition is completed, and continue to dropwise add for a second set time to obtain a third solution; continue to stir for 1 to 1.5 hours after the dropwise addition is completed;

[0049] [Step S4] Add water to dilute the third solution to obtain a fourth solution, thereby preparing the primer for the PP plastic floor.

[0050] In one embodiment of the present invention, in step S1, the chlorinated resin and the solvent are put into a reactor, the stirring system is turned on, and the mixture is heated to 10-40° C. to uniformly disperse and dissolve the solid to obtain a first solution. In one embodiment, the mass ratio of the chlorinated resin to the solvent in the first solution is 20-30:13-27.

[0051] In step S2, after stirring for 2 to 20 minutes, when the temperature is maintained at 10 to 40°C, an emulsifier solution prepared by the emulsifier and water is added dropwise to the first solution for 2 to 3 hours with sufficient stirring.

[0052] In step S3, 5 to 20 minutes before the completion of the dropwise addition, a silane coupling agent is added and mixed, and the dropwise addition is continued for 5 to 20 minutes to obtain a third solution, which is kept at a constant temperature of 20 to 40° C. for 1 to 1.5 hours.

[0053] In step S4, the mixture is cooled to below 30° C. and diluted with water to obtain a fourth solution, and then discharged to obtain the primer for the PP plastic floor.

[0054] Example 1

[0055] A method for preparing a primer for PP plastic flooring, comprising the following steps:

[0056] (1) Preparation: 20 parts of maleic anhydride-modified chlorinated polypropylene (chlorine content 30%) with a weight average molecular weight of 60,000, 6 parts of acetone and 15 parts of ethyl acetate are placed in a reaction vessel, the temperature is raised to 30° C., and the stirring system is turned on to uniformly disperse and dissolve the solid to obtain a solution 1;

[0057] Preparation of emulsifier solution 2: accurately weigh 6 parts by weight of AEO-7 and 6 parts by weight of OP-7 and 10 parts by weight of deionized water, stir and mix evenly, and pump into the high-level tank for dropwise addition;

[0058] (2) Dropwise addition:

[0059] After stirring for 10 minutes, solution 2 was added dropwise to solution 1. Solution 2 was added dropwise within 3 hours. 10 minutes before the end of the addition, 1 part by weight of γ-(methacryloyloxy)propyltrimethoxysilane was added and dispersed evenly. After the addition was completed, the temperature was kept constant for 1 hour.

[0060] (3) Dilution:

[0061] After the heat preservation is completed, the temperature is lowered to 30° C., and 35 parts by weight of deionized water are used for dilution, mixed evenly, and discharged to obtain the primer 1 for the PP plastic floor.

[0062] Example 2

[0063] A method for preparing a primer for PP plastic flooring, comprising the following steps:

[0064] (1) Preparation: 30 parts by weight of acrylate-modified chlorinated polypropylene (chlorine content 33%) with a weight average molecular weight of 40,000, 6 parts by weight of ethyl acetate, and 18 parts by weight of tetrachloroethylene are placed in a reaction vessel, the temperature is raised to 35° C., and a stirring system is turned on to uniformly disperse and dissolve the solid to obtain a solution 1;

[0065] Preparation of emulsifier solution 2: accurately weigh 8 parts by weight of OP-7 and 8 parts by weight of OP-9 and 15 parts by weight of deionized water, stir and mix evenly, pump into the high-level tank for dropwise addition;

[0066] (2) Dropwise addition:

[0067] After stirring for 10 minutes, solution 2 was added dropwise to solution 1. Solution 2 was added dropwise within 2.5 hours. 10 minutes before the end of the addition, 1.5 parts by weight of vinyltrimethoxysilane was added and dispersed evenly. After the addition was completed, the temperature was kept constant for 1.2 hours.

[0068] (3) Dilution:

[0069] After the heat preservation is completed, the temperature is lowered to 27° C., and 30 parts by weight of deionized water are used for dilution, mixed evenly, and discharged to obtain the primer 2 for the PP plastic floor.

[0070] Example 3

[0071] A method for preparing a primer for PP plastic flooring, comprising the following steps:

[0072] (1) Preparation: 25 parts by weight of isotactic chlorinated polypropylene (CPP) with a weight average molecular weight of 30,000 (chlorine content 25%), 5 parts by weight of acetone, and 16 parts by weight of tetrachloroethylene are placed in a reaction vessel, the temperature is raised to 25° C., and a stirring system is turned on to uniformly disperse and dissolve the solid to obtain a solution 1;

[0073] Preparation of emulsifier solution 2: accurately weigh 7 parts by weight of AEO-7 and 7 parts by weight of AEO-9 and 10 parts by weight of deionized water, stir and mix evenly, and pump into the high-level tank for dropwise addition;

[0074] (2) Dropwise addition:

[0075] After stirring for 10 minutes, emulsifier solution 2 was added dropwise to solution 1. Solution 2 was added dropwise within 2 hours. 10 minutes before the end of the addition, 2 parts by weight of vinyl triisopropoxy silane was added and dispersed evenly. After the addition was completed, the temperature was kept constant for 1.5 hours.

[0076] (3) Dilution:

[0077] After the heat preservation is completed, the temperature is lowered to 25° C., and 30 parts by weight of deionized water are used for dilution, mixed evenly, and discharged to obtain the primer 3 for the PP plastic floor.

[0078] The primers prepared in the above three embodiments were subjected to adhesion performance tests, and the test results are shown in Table 1:

[0079]

[0080]

[0081] Table 1 Primer Adhesion Performance Test Table

[0082] In Table 1, adhesion level 0 is the best, followed by level 1. In the above table, the adhesion of the three embodiments to the PP plastic floor and other materials is good.

[0083] In summary, the PP plastic floor primer and its preparation method proposed in the present invention have low requirements on the cleanliness of the spraying environment and the surface of the PP substrate, can remove oil stains on the surface of the substrate, and can also promote the combination between the PP material and the paint or glue to make the adhesion more stable.

[0084] The PP primer of the present invention can be flame-free and wet-sprayable, and can be used conveniently and quickly in scenes such as hand spray lines or automatic lines; the primer of the present invention has strong compatibility with glue resins, and therefore has a wide range of applications, and can replace traditional surface adhesion improvement methods. The PP primer is used to generate a film layer with double-sided adhesion, and based on intermolecular interaction forces and chemical bonding forces, the adhesion of the glue to the substrate is enhanced while the substrate is fully wetted, thereby improving the adhesion properties of the PP material surface.

[0085] The primer prepared by the present invention only has a weak erosion effect on the surface of the PP plastic, and will not cause damage to other layers. The primer prepared by the present invention has strong adhesion and is not only suitable for pure PP materials, but also for impure PP materials and even modified PP materials, and can improve the water resistance, oil resistance and hardness of the coating.

[0086] The primer prepared by the present invention can effectively solve the problems of poor adhesion, paint peeling and poor adhesion in a 100-grid test of paint on a PP substrate that has not been treated with combustion flame, plasma, corona, surface grinding, etc., and is widely applicable to spraying paint systems such as ordinary color paint, rubber paint, PU paint, UV paint, etc. on PP substrates, and is also applicable to glue systems such as PU.

[0087] The PP primer prepared by the present invention can effectively wet the surface of the PP substrate, form a thick film, and promote the adhesion of paint or glue to the film layer. At the same time, the chlorinated resin diffuses into the interior of the substrate to enhance the intermolecular force and forms a chemical bond with the paint or glue to enhance the adhesion performance.

[0088] The primer prepared by the present invention has a relatively simple processing and production process flow, is easy to operate, has low requirements for supporting facilities, is convenient to construct and easy to implement, has a short surface drying time, and has a wide source of processed raw materials, which are economically available, non-toxic and environmentally friendly. It alleviates the problem that the existing process may cause harm to human health and the environment, and has significant economic benefits, social benefits and environmental benefits.

[0089] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0090] The description and application of the present invention here are illustrative, and it is not intended to limit the scope of the present invention to the above-mentioned embodiments. The effects or advantages involved in the embodiments may not be embodied in the embodiments due to interference from various factors, and the description of the effects or advantages is not used to limit the embodiments. The deformation and change of the embodiments disclosed here are possible, and the replacement of the embodiments and the various equivalent parts are well known to those of ordinary skill in the art. It should be clear to those skilled in the art that the present invention can be implemented in other forms, structures, arrangements, proportions, and with other components, materials and parts without departing from the spirit or essential features of the present invention. Other deformations and changes can be made to the embodiments disclosed here without departing from the scope and spirit of the present invention.

Claims

1. A PP plastic floor primer, characterized in that: The PP plastic floor primer comprises: 20 to 30 parts by weight of chlorinated resin, 13 to 27 parts by weight of solvent, 10 to 20 parts by weight of emulsifier, 1 to 4 parts by weight of silane coupling agent and 40 to 60 parts by weight of water.

2. The PP plastic floor primer according to claim 1, characterized in that: The chlorinated resin is at least one of chlorinated polypropylene (CPP), chlorinated polyethylene (CPE), chlorinated EVA, high chloride vinyl (HCPE), modified chlorinated PP and MP chloroether resin.

3. The PP plastic floor primer according to claim 2, characterized in that: The weight average molecular weight of the chlorinated resin is 20,000 to 70,000; the chlorine content of the chlorinated resin is between 18% and 67%; The chlorinated polypropylene (CPP) is at least one of maleic anhydride-modified chlorinated polypropylene, amine-modified chlorinated polypropylene and acrylate-modified chlorinated polypropylene.

4. The PP plastic floor primer according to claim 1, characterized in that: The solvent is at least one of ethanol, isopropanol, acetone, ethyl acetate, butyl acetate, trichloroethane, pentachloroethane, trichloroethylene and tetrachloroethylene; The emulsifier is at least one of sodium dodecylbenzene sulfonate LAS, fatty alcohol polyoxyethylene ether sodium sulfate AES, fatty alcohol polyoxyethylene ether AEO series and nonylphenol polyoxyethylene ether OP series.

5. The PP plastic floor primer according to claim 1, characterized in that: The silane coupling agent is at least one of vinyl triisopropoxy silane, γ-(methacryloyloxy)propyl trimethoxy silane and vinyl trimethoxy silane; The water is at least one of ultrapure water, deionized water, double distilled water, pure water or distilled water.

6. A method for preparing the PP plastic floor primer according to any one of claims 1 to 5, characterized in that: The preparation method comprises: S1, stirring and dispersing the chlorinated resin in a solvent at a high speed to dissolve it evenly to obtain a first solution; S2, adding an emulsifier to water in a set proportion to obtain an emulsifier solution; simultaneously dropping the emulsifier solution into the first solution for 2 to 3 hours and stirring thoroughly; S3, adding silane coupling agent and mixing for a first set time before the completion of the dropwise addition, and continuing to dropwise add for a second set time to obtain a third solution; and continuing to stir for 1 to 1.5 hours after the dropwise addition is completed; S4, adding water to dilute the third solution to obtain a fourth solution, and preparing the primer for the PP plastic floor.

7. The preparation method according to claim 6, characterized in that: In step S1, the chlorinated resin and the solvent are put into a reactor, the stirring system is turned on, and the mixture is heated to 10-40° C. to uniformly disperse and dissolve the solid to obtain a first solution; In step S2, after stirring for 2 to 20 minutes, when the temperature is maintained at 10 to 40° C., the emulsifier solution prepared by the emulsifier and water is added dropwise to the first solution for 2 to 3 hours with sufficient stirring; In step S3, 5 to 20 minutes before the completion of the dropwise addition, a silane coupling agent is added and mixed, and the dropwise addition is continued for 5 to 20 minutes to obtain a third solution, which is kept at a constant temperature of 20 to 40° C. for 1 to 1.5 hours; In step S4, the mixture is cooled to below 30° C. and diluted with water to obtain a fourth solution, and then discharged to obtain the primer for the PP plastic floor.

8. The preparation method according to claim 7, characterized in that: In step S1, the mass ratio of the chlorinated resin to the solvent in the first solution is 20-30:13-27.

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