Highly wear-resistant floor and process for its production

Abstract

The application relates to the technical field of new materials, and discloses high-wear-resistance floor and a preparation process thereof, wherein flexible acrylic resin, polyester elastomer, a self-crosslinking aid, maleimide ester-based polysiloxane, a low-gloss component and an antioxidant are mixed, extruded in a double-screw extruder, and polyester blends are obtained; then the polyester blends, polyvinyl chloride, slag, a lubricant, a stabilizer and a plasticizer are mixed, extruded in a double-screw extruder, and high-wear-resistance floor is obtained. The maleimide ester-based polysiloxane has a dynamic thiol-maleimide bond network topology rearrangement generated through an imine exchange reaction at high temperature, which provides dynamic performance for the high-wear-resistance floor; and the polysiloxane has a long chain and can effectively regulate the flexibility of the material as a flexible touch regulator. The floor material has good wear resistance, high flexibility and a self-healing function, which is beneficial to prolonging the service life and reducing the maintenance cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new materials, in particular to a high wear-resistant floor and a preparation process thereof. BACKGROUND

[0002] As the core material of building decoration, the wear resistance of the floor directly determines the service life and use experience. Although solid wood floor is beautiful, its wear resistance is limited and it is prone to deformation due to moisture; although the wear-resistant layer (such as aluminum oxide) of the reinforced composite floor improves the hardness, it often sacrifices the comfort and impact toughness, and the surface is difficult to repair once it is seriously scratched; the PVC floor has good flexibility but relatively poor wear resistance, especially in high-traffic areas, it is prone to wear and aging. The patent with the authorization announcement number CN115368690B discloses a PVC floor and a preparation method thereof, which uses polyvinyl chloride, acrylic modified resin, chlorinated polyethylene and the like as raw materials, and the prepared PVC floor has the characteristics of high toughness, but the patent does not improve the wear resistance and the like of the PVC floor material, which is not conducive to prolonging the service life of the floor material and reducing the maintenance cost.

[0003] The high polymer material with self-healing function has great potential in many fields, and the core is the introduction of dynamic reversible chemical bonds. However, applying these technologies to the floor products produced on a large scale faces significant challenges: first, the performance balance problem, the self-repairing property usually requires the material to have good chain segment movement ability or responsiveness to stimuli (such as heat and light), which may conflict with the rigidity and hardness required by high wear resistance; second, the process complexity and cost, many self-repairing systems have complicated synthesis steps, or require specific external conditions to trigger repair, which is difficult to meet the efficiency and cost requirements of the industrial production of floor; third, the compatibility and stability of the existing base material, effectively and stably integrating the self-repairing component into the commonly used floor base materials such as PVC, acrylic resin and polyester elastomer, and ensuring the uniformity and durability of the performance of the final composite material are the key bottlenecks for technology landing. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a high wear-resistant floor and a preparation process thereof, which solves the problem of poor wear resistance and self-healing performance of the floor material.

[0005] In one aspect, the present application provides a preparation process of a high wear-resistant floor, comprising the following steps:

[0006] Step (1), N,N'-4,4-benzoyl phenyl maleimide, mercaptan polysiloxane and catalyst 1,8-diazabicyclo[5.4.0]undec-7-ene with a mass ratio of (10-40):100:(3-5) are heated to 20-35℃ and stirred for 1-2h to obtain maleimide ester-based polysiloxane;

[0007] Step (2), the flexible acrylic resin, polyester elastomer, self-crosslinking auxiliary agent, maleimide ester-based polysiloxane, low gloss component, antioxidant are mixed, and then extruded in a double screw extruder, the temperature of each section is 100-180 DEG C, and then granulated to obtain a polyester blend; then the polyester blend, polyvinyl chloride, slag, lubricant, stabilizer and plasticizer are mixed, and then extruded in a double screw extruder, the temperature of each section is 110-180 DEG C, and then shaped through a mold after extrusion, and then cooled to obtain the high wear-resistant floor.

[0008] Further, the mass ratio of the flexible acrylic resin, polyester elastomer, maleimide ester-based polysiloxane, polyvinyl chloride and slag in step (2) is (10-25):(10-25):(1-4):(100):(50-60).

[0009] Further, the low gloss component is MBX-40 or MBX-5 or MBX-60; the antioxidant is antioxidant 1010 or antioxidant 264; the lubricant is stearic acid, calcium stearate or zinc stearate; the stabilizer is a lead salt stabilizer; and the plasticizer is dioctyl phthalate.

[0010] Further, the preparation method of the mercaptan polysiloxane is as follows: octamethylcyclotetrasiloxane, mercaptopropanediol (dimethoxy) methylsilane, hexamethyl disiloxane, water and trifluoromethanesulfonic acid are added into a flask in a mass ratio of (80-92):(70-276):(1.7-4.2):(15-58):(1.5-4.6), heated to 80-90 DEG C, stirred for 7-10 h, the product is dissolved in n-hexane, washed with water, dried to obtain the mercaptan polysiloxane.

[0011] .

[0012] Further, the preparation method of the N,N'-4,4-phenyl benzoate bismaleimide is as follows: maleic anhydride and toluene are added into a flask, p-aminobenzoic acid p-aminophenyl ester is added after stirring, and then reacted at 20-30 DEG C for 2-3 h, p-toluenesulfonic acid is added, heated to 110-120 DEG C, refluxed for 4-6 h, the solvent is removed by distillation under reduced pressure, and dried to obtain the N,N'-4,4-phenyl benzoate bismaleimide.

[0013] .

[0014] Further, the molar ratio of the p-aminobenzoic acid p-aminophenyl ester, maleic anhydride and p-toluenesulfonic acid is 1:(2-2.2):(0.25-0.34).

[0015] Another aspect of the present application provides the high wear-resistant floor prepared by the preparation process.

[0016] Beneficial effects: The high wear-resistant floor of the present application adopts flexible acrylate to add self-crosslinking components, and the self-crosslinking is carried out in the co-extrusion process to obtain high-crosslinking flexible acrylate. With the increase of the polymerization degree of acrylate, the entanglement degree of molecular chain increases, even in the plasticizing system, the molecular chain can form crosslinked network structure, so that the macromolecular movement is difficult, and irreversible slip is not easy to produce, so that the impact resilience of the high wear-resistant floor is improved with the increase of the polymerization degree. At the same time, the floor skeleton part is extruded by PVC with high filling of inorganic filler. PVC has a certain crystallization ability, with the increase of the polymerization degree, the PVC molecular chain arrangement tends to be regular, and the crystallinity is improved. As the physical crosslinking point of plasticized PVC, the crystallization improves the van der Waals force between PVC molecules and the hydrogen bonding force in the molecule. Under the action of external force, the hydrogen bond can be separated to absorb external energy, improve the ability of high wear-resistant floor to resist mechanical action, and thus improve the wear resistance.

[0017] The maleimide ester-based polysiloxane of the present application is constructed by thiol-maleimide click chemistry reaction to form a dynamic covalent bond self-healing system. The dynamic thiol-maleimide bond provides dynamic performance for the high wear-resistant floor, including ductility and hot workability, through the network topological rearrangement generated by imine exchange reaction at high temperature, and the polysiloxane has a long chain and can effectively regulate the flexibility of the material as a flexible touch regulator. The maleimide ester-based polysiloxane contains an ester group, which has good compatibility with flexible acrylic resin and polyester elastomer, so that it has good toughness. The floor material of the present application has good wear resistance, high flexibility and self-healing function, which is beneficial to prolong the service life and reduce the maintenance cost.

[0018] The present application develops an innovative material system suitable for floor manufacturing, which integrates high wear resistance and self-healing. The core strategy is to design and synthesize a new type of maleimide ester-based polysiloxane containing dynamic bond as a key functional component, which skillfully combines the advantages of maleimide group (can participate in dynamic reaction) and polysiloxane segment (good flexibility and good weather resistance). By scientifically compounding it with flexible acrylic resin, polyester elastomer, polyvinyl chloride and slag (as reinforcing filler) and other raw materials, a composite material with controllable microstructure is constructed. This design is expected to effectively coordinate the relationship between wear resistance, flexibility, rigidity and dynamic reversibility, thereby breaking through the technical bottleneck of the prior art and realizing the synergistic improvement of floor materials in high wear resistance and practical self-healing ability, meeting the urgent needs of high-end and high durability floor market. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application will be further described in detail below with examples. It should be understood that the specific examples described herein are only used to explain the present application and not to limit the present application.

[0020] The flexible acrylic resin used in the following example is Dow Corning 21308-XP. The polyester elastomer is Silastic 5526, and the self-crosslinking aid is BASF ADR4468. The polyvinyl chloride is Starpack PSM-31.

[0021] Example 1: Preparation process of high wear-resistant floor, comprising the following steps:

[0022] Step (1), 80 g octamethylcyclotetrasiloxane, 173 g mercaptopropanediol (dimethoxy) methyl silane, 3.1 g hexamethyldisiloxane, 34 g water, 2.4 g trifluoromethanesulfonic acid were added to a flask, heated to 90°C, stirred for 9 h, and the product was dissolved in n-hexane, washed with water, and dried to obtain a mercaptosilicone;

[0023] Step (2), 6.2 mmol of maleic anhydride and 800 mL of toluene were added to a flask, 3 mmol of p-aminobenzoic acid p-aminophenyl ester was added after stirring, and reacted at 20°C for 2 h, then 0.75 mmol of p-toluenesulfonic acid was added, heated to 110°C, and refluxed for 5 h. The solvent was removed by distillation under reduced pressure, and dried to obtain N,N'-4,4-benzoic acid phenyl ester bismaleimide;

[0024] Step (3), 2.5 g of N,N'-4,4-benzoic acid phenyl ester bismaleimide, 25 g of mercaptosilicone, and 0.75 g of catalyst 1,8-diazabicycloundec-7-ene were added to a flask, heated to 35°C, and stirred for 1 h to obtain a maleimide ester-based polysiloxane;

[0025] Step (4), 0.8 kg of flexible acrylic resin, 2 kg of polyester elastomer, 40 g of self-crosslinking aid, 0.08 kg of maleimide ester-based polysiloxane, 11 g of MBX-40, and 8 g of antioxidant 1010 were mixed, extruded in a twin-screw extruder, and pelletized to obtain a polyester blend, wherein the temperature of each section of the twin-screw extruder was 100°C, 140°C, 160°C, 180°C, and 160°C. Then, the polyester blend, 8 kg of polyvinyl chloride, 4 kg of slag, 12 g of zinc stearate, 0.22 kg of lead salt stabilizer lead tri-basic sulfate, and 0.5 kg of dioctyl phthalate were mixed, extruded in a twin-screw extruder, and molded after extrusion to obtain a high wear-resistant floor, wherein the temperature of each section of the twin-screw extruder was 110°C, 130°C, 160°C, 180°C, and 180°C.

[0026] Example 2: Preparation process of high wear-resistant floor, comprising the following steps:

[0027] Step (1), add 84g of octamethylcyclotetrasiloxane, 70g of mercaptopropyl (dimethoxy)methylsilane, 4.2g of hexamethyldisiloxane, 15g of water, and 4.6g of trifluoromethanesulfonic acid into a flask, heat to 80°C, stir and react for 7h, dissolve the product in n-hexane, wash with water, and dry to obtain mercaptopolysiloxane;

[0028] Step (2), add 6mmol of maleic anhydride and 700mL of toluene to a flask, stir and add 3mmol of p-aminophenyl para-aminobenzoate, react at 30°C for 2h, then add 0.84mmol of p-toluenesulfonic acid, heat to 120°C, reflux for 4h, remove the solvent by distillation under reduced pressure, and dry to obtain N,N'-4,4-phenylbenzoate bismaleimide;

[0029] Step (3), heating 5g of N,N'-4,4-phenylbenzoate bismaleimide, 25g of mercaptopolysiloxane, and 0.82g of catalyst 1,8-diazabicycloundec-7-ene to 25°C and stirring for 2h to obtain maleimide ester polysiloxane;

[0030] Step (4): 1.2 kg of flexible acrylic resin, 1.6 kg of polyester elastomer, 36 g of self-crosslinking auxiliary agent, 0.16 kg of maleimide ester polysiloxane, 26 g of MBX-60 and 10 g of antioxidant 1010 are mixed and extruded in a twin-screw extruder at temperatures of 100° C., 140° C., 160° C., 180° C. and 160° C., and granulated to obtain a polyester blend; the polyester blend, 8 kg of polyvinyl chloride, 4.4 kg of slag, 8 g of stearic acid, 0.2 kg of lead salt stabilizer dibasic lead sulfate and 0.7 kg of dioctyl phthalate are mixed and extruded in a twin-screw extruder at temperatures of 110° C., 130° C., 160° C., 180° C. and 180° C., and after extrusion, the mixture is shaped by a mold and cooled to obtain a high wear-resistant floor.

[0031] Example 3: A process for preparing a highly wear-resistant floor, comprising the following steps:

[0032] Step (1), adding 88g of octamethylcyclotetrasiloxane, 276g of mercaptopropyl (dimethoxy)methylsilane, 1.7g of hexamethyldisiloxane, 58g of water, and 1.5g of trifluoromethanesulfonic acid to a flask, heating to 80°C, stirring and reacting for 10h, dissolving the product in n-hexane, washing with water, and drying to obtain mercaptopolysiloxane;

[0033] Step (2), 6.4 mmol of maleic anhydride and 900 mL of toluene were added to a flask, after stirring, 3 mmol of p-aminobenzoic acid p-aminophenyl ester was added, and reacted at 20℃ for 3 h, then 1.02 mmol of p-toluenesulfonic acid was added, heated to 120℃, and refluxed for 6 h. The solvent was removed by distillation under reduced pressure, and dried to obtain N,N'-4,4-benzoic acid phenyl ester bismaleimide;

[0034] Step (3), 7.5 g of N,N'-4,4-benzoic acid phenyl ester bismaleimide, 25 g of mercaptopolydimethylsiloxane, and 0.94 g of catalyst 1,8-diazabicycloundec-7-ene were added to a flask, heated to 20℃ and stirred for 2 h to obtain a maleimide ester-based polysiloxane;

[0035] Step (4), 2 kg of flexible acrylic resin, 0.8 kg of polyester elastomer, 47 g of self-crosslinking aid, 0.24 kg of maleimide ester-based polysiloxane, 41 g of MBX-5, and 12 g of antioxidant 264 were mixed, and then extruded in a twin-screw extruder. The temperature of each section of the twin-screw extruder was 100℃, 140℃, 160℃, 180℃, and 160℃. The polyester blend was obtained after granulation. Then, the polyester blend, 8 kg of polyvinyl chloride, 4.6 kg of slag, 16 g of calcium stearate, 0.32 kg of lead salt stabilizer lead tri-basic sulfate, and 0.8 kg of dioctyl phthalate were mixed and extruded in a twin-screw extruder. The temperature of each section of the twin-screw extruder was 110℃, 130℃, 160℃, 180℃, and 180℃. After extrusion, the high wear-resistant floor was shaped by a mold, cooled, and obtained.

[0036] Example 4: Preparation process of high wear-resistant floor, including the following steps:

[0037] Step (1), 92 g of octamethylcyclotetrasiloxane, 122 g of mercaptopropyl (dimethoxy) methylsilane, 2.4 g of hexamethyldisiloxane, 27 g of water, and 3.5 g of trifluoromethanesulfonic acid were added to a flask, heated to 90℃, and stirred for 7 h. The product was dissolved in n-hexane, washed with water, and dried to obtain mercaptopolydimethylsiloxane;

[0038] Step (2), 6.6 mmol of maleic anhydride and 900 mL of toluene were added to a flask, after stirring, 3 mmol of p-aminobenzoic acid p-aminophenyl ester was added, and reacted at 30℃ for 3 h, then 1.02 mmol of p-toluenesulfonic acid was added, heated to 110℃, and refluxed for 5 h. The solvent was removed by distillation under reduced pressure, and dried to obtain N,N'-4,4-benzoic acid phenyl ester bismaleimide;

[0039] Step (3), 10 g of N,N'-4,4-phenyl benzoate bismaleimide, 25 g of mercaptan polysiloxane, 1.25 g of catalyst 1,8-diazabicycloundec-7-ene were stirred and reacted at 20℃ for 1 h to obtain maleimide ester-based polysiloxane;

[0040] Step (4), 1.6 kg of flexible acrylic resin, 1.2 kg of polyester elastomer, 42 g of self-crosslinking aid, 0.32 kg of maleimide ester-based polysiloxane, 56 g of MBX-60, 12 g of antioxidant 264 were mixed, and extruded in a twin-screw extruder, the temperature of each section of the twin-screw extruder was 100℃, 140℃, 160℃, 180℃, 160℃, and then pelletized to obtain a polyester blend; then the polyester blend, 8 kg of polyvinyl chloride, 5 kg of slag, 14 g of stearic acid, 0.28 kg of lead salt stabilizer lead tri-basic sulfate, 0.6 kg of dioctyl phthalate were mixed, and extruded in a twin-screw extruder, the temperature of each section of the twin-screw extruder was 110℃, 130℃, 160℃, 180℃, 180℃, and then molded, cooled to obtain high wear-resistant floor.

[0041] Comparative Example 1: The difference from Example 1 is that no maleimide ester-based polysiloxane is added.

[0042] Step (1), 0.8 kg of flexible acrylic resin, 2 kg of polyester elastomer, 40 g of self-crosslinking aid, 11 g of MBX-40, 8 g of antioxidant 1010 were mixed, and extruded in a twin-screw extruder, the temperature of each section of the twin-screw extruder was 100℃, 140℃, 160℃, 180℃, 160℃, and then pelletized to obtain a polyester blend; then the polyester blend, 8 kg of polyvinyl chloride, 4 kg of slag, 12 g of zinc stearate, 0.22 kg of lead salt stabilizer lead tri-basic sulfate, 0.5 kg of dioctyl phthalate were mixed, and extruded in a twin-screw extruder, the temperature of each section of the twin-screw extruder was 110℃, 130℃, 160℃, 180℃, 180℃, and then molded, cooled to obtain floor material.

[0043] Comparative Example 2: The difference from Example 1 is that mercaptan polysiloxane is used instead of maleimide ester-based polysiloxane.

[0044] Step (1), 0.8 kg flexible acrylic resin, 2 kg polyester elastomer, 40 g self-crosslinking aid, 0.08 kg mercapto polysiloxane, 11 g MBX-40, 8 g antioxidant 1010 were mixed, and extruded in a twin-screw extruder, the temperature of each section of the twin-screw extruder was 100℃, 140℃, 160℃, 180℃, 160℃, pelletized to obtain a polyester blend; then the polyester blend, 8 kg polyvinyl chloride, 4 kg slag, 12 g zinc stearate, 0.22 kg lead salt stabilizer lead tri-basic sulfate, 0.5 kg dioctyl phthalate were mixed, and extruded in a twin-screw extruder, the temperature of each section of the twin-screw extruder was 110℃, 130℃, 160℃, 180℃, 180℃, and after extrusion, the material was shaped by a mold, cooled to obtain a floor material.

[0045] Comparative Example 3: The difference from Example 1 is that N,N'-(4,4'- methylenedianiline) (CAS No. 13676-54-5) is used instead of N,N'-4,4- benzophenone phenyl maleimide to synthesize maleimide ester polysiloxane.

[0046] Step (1), 2.5 g N,N'-(4,4'-methylenedianiline), 25 g mercapto polysiloxane, 0.75 g catalyst 1,8-diazabicycloundec-7-ene were heated to 35℃ and stirred for 1 h to obtain maleimide-based polysiloxane.

[0047] Step (2), 0.8 kg flexible acrylic resin, 2 kg polyester elastomer, 40 g self-crosslinking aid, 0.08 kg maleimide-based polysiloxane, 11 g MBX-40, 8 g antioxidant 1010 were mixed, and extruded in a twin-screw extruder, the temperature of each section of the twin-screw extruder was 100℃, 140℃, 160℃, 180℃, 160℃, pelletized to obtain a polyester blend; then the polyester blend, 8 kg polyvinyl chloride, 4 kg slag, 12 g zinc stearate, 0.22 kg lead salt stabilizer lead tri-basic sulfate, 0.5 kg dioctyl phthalate were mixed, and extruded in a twin-screw extruder, the temperature of each section of the twin-screw extruder was 110℃, 130℃, 160℃, 180℃, 180℃, and after extrusion, the material was shaped by a mold, cooled to obtain a floor material.

[0048] The sample bar of the floor material was prepared according to the method of GB / T 3960-2016, and the wear resistance was tested.

[0049] The sample bar of the high floor material was prepared according to the method of GB / T 1040.1-2018, and the tensile strength was tested.

[0050] The sample bar of the floor material was prepared according to the method of GB / T 1043.1-2008, and the impact strength was tested.

[0051] The sample of high wear-resistant floor was prepared according to the method of GB / T 9341-2008, and the bending strength was tested. Through the DSR self-healing experiment, the stress control mode was used, the experimental temperature was 20℃, the loading frequency was 10Hz, the fatigue stress was set to 0.5Mpa, when the initial complex shear modulus decreased to 60% of the fatigue damage, the loading was stopped for 30min, then repeated for 50 times, and then the bending strength test was carried out again.

[0052] Table 1: Performance test results of high wear-resistant floor prepared by each example and comparative example

[0053]

[0054] According to the data in Table 1, the wear amount of the high wear-resistant floor prepared by Example 1-Example 4 was 21.1-32.0mg, and with the change of the amount of flexible acrylic resin and maleimide ester-based polysiloxane, the degree of entanglement of molecular chain increased, and the degree of crosslinking increased, which provided wear resistance.

[0055] The bending strength of the high wear-resistant floor prepared by Example 1-Example 4 was 60.9-82.1Mpa, and the impact strength was 14.2-25.4kJ·m -2 , the bending strength and impact strength were higher than those of Comparative Example 1-Comparative Example 3. After 50 times of fatigue damage, the bending strength of the high wear-resistant floor of Example 1-Example 4 could still be maintained at 53.2-73.6Mpa, with a high retention rate, while the bending strength of Comparative Example 1-Comparative Example 3 decreased greatly, indicating that Example 1-Example 4 had good self-healing performance. This is because the maleimide ester-based polysiloxane added is synthesized by thiol-maleimide click chemistry reaction, which constructs a dynamic covalent bond self-healing system. The dynamic thiol-maleimide bond provides dynamic performance and self-healing performance for the high wear-resistant floor through network topology rearrangement generated by imine exchange reaction at high temperature.

[0056] The tensile strength of the high wear-resistant floor prepared by Example 1-Example 4 was 32.9-51.6Mpa, it could be seen that the addition of maleimide ester-based polysiloxane changed the tensile strength, mainly because the maleimide ester-based polysiloxane contained a large number of long chains, which increased the flexibility of the system and thus reduced the tensile strength. At the same time, the imide ester-based polysiloxane added in Example 1-Example 4 contains ester groups, which has good compatibility with flexible acrylic resin and polyester elastomer, so it has good toughness.

[0057] The above merely describes preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A process for preparing a high wear-resistant floor, characterized in that: The steps include: Step (1), stirring and reacting N,N'-4,4-phenylbenzoate bismaleimide, mercaptopolysiloxane, and catalyst 1,8-diazabicycloundec-7-ene to obtain maleimide ester polysiloxane; Step (2): mixing a flexible acrylic resin, a polyester elastomer, a self-crosslinking auxiliary agent, a maleimide ester polysiloxane, a low-gloss component, and an antioxidant, extruding the mixture in a twin-screw extruder at a temperature of 100-180° C. in each section, and granulating the mixture to obtain a polyester blend; then mixing the polyester blend, polyvinyl chloride, slag, a lubricant, a stabilizer, and a plasticizer, extruding the mixture in a twin-screw extruder at a temperature of 110-180° C. in each section, shaping the mixture through a mold after extrusion, and cooling the mixture to obtain a high-wear-resistant floor.

2. The preparation process of the high wear-resistant floor according to claim 1, characterized in that: The mass ratio of the N,N'-4,4-phenylbenzoate bismaleimide, mercaptopolysiloxane and catalyst 1,8-diazabicycloundec-7-ene is (10-40):100:(3-5).

3. The preparation process of the high wear-resistant floor according to claim 1, characterized in that: In the step (1), the reaction temperature is 20-35° C., and the reaction time is 1-2 h.

4. The process for preparing the high wear-resistant floor according to claim 1, characterized in that: In the step (2), the mass ratio of the flexible acrylic resin, polyester elastomer, maleimide ester polysiloxane, polyvinyl chloride, and slag is (10-25): (10-25): (1-4): (100): (50-60).

5. The process for preparing the high wear-resistant floor according to claim 1, characterized in that: The low gloss component is MBX-40, MBX-5 or MBX-60; the antioxidant is antioxidant 1010 or antioxidant 264; the lubricant is stearic acid, calcium stearate or zinc stearate; the stabilizer is a lead salt stabilizer; and the plasticizer is dioctyl phthalate.

6. The process for preparing the high wear-resistant floor according to claim 2, characterized in that: The preparation method of the mercaptopolysiloxane comprises the following steps: adding octamethylcyclotetrasiloxane, mercaptopropyl (dimethoxy)methylsilane, hexamethyldisiloxane, water, and trifluoromethanesulfonic acid into a flask, heating to 80-90° C., stirring and reacting for 7-10 hours, dissolving the product in n-hexane, washing with water, and drying to obtain the mercaptopolysiloxane.

7. The process for preparing a high wear-resistant floor according to claim 6, characterized in that: The mass ratio of octamethylcyclotetrasiloxane, mercaptopropyl (dimethoxy)methylsilane, hexamethyldisiloxane, water and trifluoromethanesulfonic acid is (80-92): (70-276): (1.7-4.2): (15-58): (1.5-4.6).

8. The process for preparing a high wear-resistant floor according to claim 2, characterized in that: The preparation method of N,N'-4,4-phenylbenzoate bismaleimide comprises the following steps: adding maleic anhydride and toluene into a flask, stirring, adding p-aminophenyl para-aminobenzoate, reacting at 20-30°C for 2-3h, then adding p-toluenesulfonic acid, heating to 110-120°C, reflux reaction for 4-6h, removing the solvent by distillation under reduced pressure, and drying to obtain N,N'-4,4-phenylbenzoate bismaleimide.

9. The process for preparing a high wear-resistant floor according to claim 8, characterized in that: The molar ratio of p-aminophenyl p-aminobenzoate, maleic anhydride and p-toluenesulfonic acid is 1:(2-2.2):(0.25-0.34).

10. A highly wear-resistant floor obtained by the preparation process according to any one of claims 1 to 9.

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