A special tire for floor scrubber

Abstract

The present invention relates to a tire for a floor scrubber, and belongs to the technical field of rubber materials. The present invention processes powdered nitrile rubber, polyurethane resin particles and ETFE resin powder of a specific particle size to obtain modified powdered nitrile rubber, pretreated polyurethane resin particles and modified ETFE resin powder, and extrudes the three together with a mixed filler. The obtained tire for a floor scrubber has the characteristics of high mechanical strength, oil resistance and wear resistance, and solves the defects of existing floor scrubber tires that are not wear-resistant and oil-resistant when working on rough or oily ground.

Description

Technical Field

[0001] The invention belongs to the technical field of rubber materials and relates to a special tire for a floor scrubber. Background Art

[0002] As a widely used equipment for cleaning commercial, industrial and public facilities, the performance of the floor scrubber's tires directly affects the equipment's cleaning efficiency, operational safety and maintenance costs. However, when facing harsh working environments, especially rough or oily floors, traditional floor scrubber tires often have the following technical problems: not wear-resistant. When traditional floor scrubber tire materials are operated on relatively rough surfaces, due to the unevenness of the ground or the presence of hard objects, the tire surface wear is aggravated, resulting in a shortened tire life and increased tire replacement frequency and cost; not oil-resistant. Traditional tires operating on oily floors for a long time are prone to accelerate the aging of tire rubber and reduce the mechanical strength of the tire, which not only reduces the cleaning efficiency of the floor scrubber, but may also cause safety hazards in equipment operation.

[0003] Therefore, the present invention provides a tire specially used for a floor scrubber having the characteristics of high mechanical strength, wear resistance and oil resistance. Summary of the invention

[0004] The object of the present invention is to provide a special tire for a floor scrubber, which has the characteristics of high mechanical strength, oil resistance and wear resistance.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A tire for a floor scrubber, comprising the following raw materials by mass fraction:

[0007] Modified powdered nitrile rubber 90-100 parts

[0008] 25-30 parts of pre-treated polyurethane resin particles

[0009] 15-20 parts of modified ETFE resin powder

[0010] 7-12 parts of mixed filler;

[0011] The modified powdered nitrile rubber is prepared by the following method:

[0012] S1. The liquid nitrile rubber is spray dried and crushed to obtain a powdered nitrile rubber having a particle size of 0.3-0.6 mm;

[0013] S2. Dissolving hexadecyltrimethylammonium chloride in deionized water to prepare a hexadecyltrimethylammonium chloride solution;

[0014] S3. Mix the powdered nitrile rubber with the cetyltrimethylammonium chloride solution, set the temperature to 32-35 ° C, set the stirring speed to 200 rpm for 28-30 min;

[0015] S4. After stirring, the solid powder was filtered out, washed with deionized water, and dried to obtain a modified nitrile rubber powder;

[0016] The pretreated polyurethane resin particles are prepared by the following method:

[0017] D1. The polyurethane emulsion is spray dried and crushed to obtain polyurethane resin particles having a particle size of 0.2-0.4 mm;

[0018] D2. The polyurethane resin particles are placed in a constant temperature drying oven at 85-90°C and dried for 2-4 hours to obtain pretreated polyurethane resin particles;

[0019] The modified ETFE resin powder is prepared by the following method:

[0020] F1. Prepare an octadecyltrimethylammonium bromide solution by mixing octadecyltrimethylammonium bromide with deionized water;

[0021] F2. The ETFE resin particles are crushed to a particle size of 0.1-0.2mm ETFE resin powder;

[0022] F3. Mix ETFE resin powder with octadecyltrimethylammonium bromide, set the temperature to 37-38°C, set the stirring speed to 150 rpm for 17-19 min, filter out, and dry to obtain modified ETFE resin powder.

[0023] As a preferred technical solution of the present invention, the following raw materials are included by mass fraction:

[0024] Modified powdered nitrile rubber 94-96 parts

[0025] Pre-treated polyurethane resin particles 27-29 parts

[0026] Modified ETFE resin powder 17-19 parts

[0027] Mix filler 9-11 parts.

[0028] As a preferred technical solution of the present invention, the mass concentration of the hexadecyltrimethylammonium chloride solution in step S2 is 1.9-2.3%.

[0029] As a preferred technical solution of the present invention, the mass ratio of the powdered nitrile rubber to the hexadecyltrimethylammonium chloride solution in step S3 is 17-19:92-96.

[0030] As a preferred technical solution of the present invention, the mass concentration of the octadecyltrimethylammonium bromide solution in step F1 is 1.5-1.7%.

[0031] As a preferred technical solution of the present invention, the mass ratio of the ETFE resin powder and octadecyltrimethylammonium bromide in step F3 is 12-15:95-97.

[0032] As a preferred technical solution of the present invention, the mixed filler consists of silicon dioxide, bamboo charcoal powder and zinc oxide.

[0033] As a preferred technical solution of the present invention, the particle size of the silicon dioxide is 1200-3000 mesh;

[0034] The particle size of the bamboo charcoal powder is 100-200 mesh;

[0035] The particle size of the zinc oxide is 0.1-10 μm.

[0036] As a preferred technical solution of the present invention, the mass ratio of silicon dioxide, bamboo charcoal powder and zinc oxide is 9:18:7.

[0037] As a preferred technical solution of the present invention, the tire dedicated to the floor scrubber is prepared by the following method:

[0038] G1. Place the modified powdered nitrile rubber, pretreated polyurethane resin particles, modified ETFE resin powder and mixed filler in a high-speed mixer and stir at 150-170°C for 13-15 minutes, then extrude in a twin-screw extruder with a set temperature of 290-310°C;

[0039] G2. After extrusion by the twin-screw extruder, the material is placed on a roller for refining, and the temperature is set to 185°C to obtain a tire material for a floor scrubber;

[0040] G3. Make the special tire for floor scrubber according to the required size requirements by using the special tire material for floor scrubber.

[0041] Beneficial effects of the present invention:

[0042] The invention processes powdered nitrile rubber, polyurethane resin particles and ETFE resin powder with specific particle sizes to obtain modified powdered nitrile rubber, pretreated polyurethane resin particles and modified ETFE resin powder, and extrude the three with mixed fillers to prepare a special tire for a floor scrubber. The raw materials act synergistically to improve the mechanical strength, oil resistance and wear resistance of the tire, and solve the defects of the existing floor scrubber tires that are not wear-resistant and oil-resistant when working on rough or oily ground. DETAILED DESCRIPTION

[0043] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in combination with the embodiments.

[0044] The sources of some raw materials used in the examples and comparative examples of the present invention are as follows:

[0045] Liquid nitrile rubber: purchased from Shandong Shengrui Chemical Technology Co., Ltd., model NBR-1704, item number SR-2

[0046] Polyurethane emulsion: purchased from Guangzhou Ruilin New Materials Co., Ltd., model RL-8302, item number 1702360815

[0047] ETFE resin particles: purchased from Dongguan Yicheng New Materials Co., Ltd. (brand distributor), brand Shandong Dongyue Future Hydrogen Energy, item number ET625L, grade ET625L

[0048] Silica: purchased from Guangzhou Xiyi Chemical Co., Ltd., product number CEXP10

[0049] Bamboo charcoal powder: purchased from Pingyang County Ruizhu Environmental Protection Technology Co., Ltd., item number RT-2020

[0050] Zinc oxide: purchased from Shijiazhuang Kaiyu Chemical Co., Ltd., item number 20211005

[0051] Example 1

[0052] A tire for a floor scrubber, comprising the following raw materials by mass fraction:

[0053] Modified powdered nitrile rubber 90 parts

[0054] 25 parts of pretreated polyurethane resin particles

[0055] 15 parts of modified ETFE resin powder

[0056] 7 parts of mixed filler;

[0057] The modified powdered nitrile rubber is prepared by the following method:

[0058] S1. The liquid nitrile rubber was spray dried and crushed to obtain a powdered nitrile rubber having a particle size of 0.3 mm;

[0059] S2. Dissolve hexadecyltrimethylammonium chloride in deionized water to prepare a hexadecyltrimethylammonium chloride solution having a mass concentration of 1.9%;

[0060] S3. Mix the powdered nitrile rubber and the cetyltrimethylammonium chloride solution in a mass ratio of 17:92, set the temperature to 32 ° C, set the stirring speed to 200 rpm for 28 min;

[0061] S4. After stirring, the solid powder was filtered out, washed with deionized water, and dried to obtain a modified nitrile rubber powder;

[0062] The pretreated polyurethane resin particles are prepared by the following method:

[0063] D1. The polyurethane emulsion is spray dried and crushed to obtain polyurethane resin particles having a particle size of 0.2 mm;

[0064] D2. The polyurethane resin particles were placed in a constant temperature drying oven at 85°C and dried for 2 h to obtain pretreated polyurethane resin particles;

[0065] The modified ETFE resin powder is prepared by the following method:

[0066] F1. Prepare a 1.5% octadecyltrimethylammonium bromide solution by mixing octadecyltrimethylammonium bromide with deionized water;

[0067] F2. The ETFE resin particles are crushed to a particle size of 0.1mm ETFE resin powder;

[0068] F3. Mix ETFE resin powder and octadecyltrimethylammonium bromide in a mass ratio of 12:95, set the temperature to 37°C, set the stirring speed to 150 rpm for 17 min, filter out, and dry to obtain modified ETFE resin powder.

[0069] The mixed filler consists of silicon dioxide, bamboo charcoal powder and zinc oxide in a mass ratio of 9:18:7.

[0070] The special tire for floor scrubber is prepared by the following method:

[0071] G1. The modified powdered nitrile rubber, pretreated polyurethane resin particles, modified ETFE resin powder and mixed filler were placed in a high-speed mixer and stirred at 150°C for 13 minutes, and then extruded in a twin-screw extruder with a set temperature of 290°C;

[0072] G2. After extrusion by the twin-screw extruder, the material is placed on a roller for refining, and the temperature is set to 185°C to obtain a tire material for a floor scrubber;

[0073] G3. Make the special tire for floor scrubber according to the required size requirements by using the special tire material for floor scrubber.

[0074] Example 2

[0075] A tire for a floor scrubber, comprising the following raw materials by mass fraction:

[0076] Modified powdered nitrile rubber 95 parts

[0077] 27 parts of pretreated polyurethane resin particles

[0078] Modified ETFE resin powder 17 parts

[0079] 10 parts of mixed filler;

[0080] The modified powdered nitrile rubber is prepared by the following method:

[0081] S1. The liquid nitrile rubber was spray dried and crushed to obtain a powdered nitrile rubber having a particle size of 0.4 mm;

[0082] S2. The hexadecyl trimethyl ammonium chloride was dissolved in deionized water to prepare a hexadecyl trimethyl ammonium chloride solution having a mass concentration of 2.1%;

[0083] S3. Mix the powdered nitrile rubber and the cetyltrimethylammonium chloride solution in a mass ratio of 18:94, set the temperature to 33 ° C, set the stirring speed to 200 rpm for 29 min;

[0084] S4. After stirring, the solid powder was filtered out, washed with deionized water, and dried to obtain a modified nitrile rubber powder;

[0085] The pretreated polyurethane resin particles are prepared by the following method:

[0086] D1. The polyurethane emulsion is spray dried and crushed to obtain polyurethane resin particles having a particle size of 0.3 mm;

[0087] D2. The polyurethane resin particles were placed in a constant temperature drying oven at 88°C and dried for 3 hours to obtain pretreated polyurethane resin particles;

[0088] The modified ETFE resin powder is prepared by the following method:

[0089] F1. Prepare a 1.6% octadecyltrimethylammonium bromide solution by mixing octadecyltrimethylammonium bromide with deionized water;

[0090] F2. The ETFE resin particles are crushed to a particle size of 0.1mm ETFE resin powder;

[0091] F3. Mix ETFE resin powder and octadecyltrimethylammonium bromide in a mass ratio of 13:96, set the temperature to 37° C., set the stirring speed to 150 rpm for 18 min, filter out, and dry to obtain modified ETFE resin powder.

[0092] The mixed filler consists of silicon dioxide, bamboo charcoal powder and zinc oxide in a mass ratio of 9:18:7.

[0093] The special tire for floor scrubber is prepared by the following method:

[0094] G1. The modified powdered nitrile rubber, pretreated polyurethane resin particles, modified ETFE resin powder and mixed filler were placed in a high-speed mixer and stirred at 160°C for 14 minutes, and then extruded in a twin-screw extruder with a set temperature of 300°C;

[0095] G2. After extrusion by the twin-screw extruder, the material is placed on a roller for refining, and the temperature is set to 185°C to obtain a tire material for a floor scrubber;

[0096] G3. Make the special tire for floor scrubber according to the required size requirements by using the special tire material for floor scrubber.

[0097] Example 3

[0098] A tire for a floor scrubber, comprising the following raw materials by mass fraction:

[0099] Modified powdered nitrile rubber 100 parts

[0100] 30 parts of pre-treated polyurethane resin particles

[0101] 20 parts of modified ETFE resin powder

[0102] 12 parts of mixed filler;

[0103] The modified powdered nitrile rubber is prepared by the following method:

[0104] S1. The liquid nitrile rubber was spray dried and crushed to obtain a powdered nitrile rubber having a particle size of 0.6 mm;

[0105] S2. The hexadecyl trimethyl ammonium chloride was dissolved in deionized water to prepare a hexadecyl trimethyl ammonium chloride solution having a mass concentration of 2.3%;

[0106] S3. The powdered nitrile rubber and the cetyltrimethylammonium chloride solution were mixed in a mass ratio of 19:96, the temperature was set to 35 ° C, and the stirring speed was set to 200 rpm for 30 min;

[0107] S4. After stirring, the solid powder was filtered out, washed with deionized water, and dried to obtain a modified nitrile rubber powder;

[0108] The pretreated polyurethane resin particles are prepared by the following method:

[0109] D1. The polyurethane emulsion is spray dried and crushed to obtain polyurethane resin particles having a particle size of 0.4 mm;

[0110] D2. The polyurethane resin particles were placed in a constant temperature drying oven at 90°C and dried for 4 hours to obtain pretreated polyurethane resin particles;

[0111] The modified ETFE resin powder is prepared by the following method:

[0112] F1. Prepare a 1.7% octadecyltrimethylammonium bromide solution by mixing octadecyltrimethylammonium bromide with deionized water;

[0113] F2. The ETFE resin particles are crushed to a particle size of 0.2mm ETFE resin powder;

[0114] F3. Mix ETFE resin powder and octadecyltrimethylammonium bromide in a mass ratio of 15:97, set the temperature to 38°C, set the stirring speed to 150 rpm for 19 min, filter out, and dry to obtain modified ETFE resin powder.

[0115] The mixed filler consists of silicon dioxide, bamboo charcoal powder and zinc oxide in a mass ratio of 9:18:7.

[0116] The special tire for floor scrubber is prepared by the following method:

[0117] G1. The modified powdered nitrile rubber, pretreated polyurethane resin particles, modified ETFE resin powder and mixed filler were placed in a high-speed mixer and stirred at 170°C for 15 minutes, and then extruded in a twin-screw extruder with a set temperature of 310°C;

[0118] G2. After extrusion by the twin-screw extruder, the material is placed on a roller for refining, and the temperature is set to 185°C to obtain a tire material for a floor scrubber;

[0119] G3. Make the special tire for floor scrubber according to the required size requirements by using the special tire material for floor scrubber.

[0120] Comparative Example 1

[0121] A tire for a floor scrubber, comprising the following raw materials by mass fraction:

[0122] Powdered nitrile rubber 100 parts

[0123] 30 parts of pre-treated polyurethane resin particles

[0124] 20 parts of modified ETFE resin powder

[0125] 12 parts of mixed filler;

[0126] The modified powdered nitrile rubber is prepared by the following method:

[0127] S1. The liquid nitrile rubber was spray dried and crushed to obtain a powdered nitrile rubber having a particle size of 0.6 mm;

[0128] The pretreated polyurethane resin particles are prepared by the following method:

[0129] D1. The polyurethane emulsion is spray dried and crushed to obtain polyurethane resin particles having a particle size of 0.4 mm;

[0130] D2. The polyurethane resin particles were placed in a constant temperature drying oven at 90°C and dried for 4 hours to obtain pretreated polyurethane resin particles;

[0131] The modified ETFE resin powder is prepared by the following method:

[0132] F1. Prepare a 1.7% octadecyltrimethylammonium bromide solution by mixing octadecyltrimethylammonium bromide with deionized water;

[0133] F2. The ETFE resin particles are crushed to a particle size of 0.2mm ETFE resin powder;

[0134] F3. Mix ETFE resin powder and octadecyltrimethylammonium bromide in a mass ratio of 15:97, set the temperature to 38°C, set the stirring speed to 150 rpm for 19 min, filter out, and dry to obtain modified ETFE resin powder.

[0135] The mixed filler consists of silicon dioxide, bamboo charcoal powder and zinc oxide in a mass ratio of 9:18:7.

[0136] The special tire for floor scrubber is prepared by the following method:

[0137] G1. The powdered nitrile rubber, pretreated polyurethane resin particles, modified ETFE resin powder and mixed filler were placed in a high-speed mixer and stirred at 170°C for 15 minutes, and then extruded in a twin-screw extruder with a set temperature of 310°C;

[0138] G2. After extrusion by the twin-screw extruder, the material is placed on a roller for refining, and the temperature is set to 185°C to obtain a tire material for a floor scrubber;

[0139] G3. Make the special tire for floor scrubber according to the required size requirements by using the special tire material for floor scrubber.

[0140] Comparative Example 2

[0141] A tire for a floor scrubber, comprising the following raw materials by mass fraction:

[0142] Modified powdered nitrile rubber 100 parts

[0143] 30 parts of polyurethane resin particles

[0144] 20 parts of modified ETFE resin powder

[0145] 12 parts of mixed filler;

[0146] The modified powdered nitrile rubber is prepared by the following method:

[0147] S1. The liquid nitrile rubber was spray dried and crushed to obtain a powdered nitrile rubber having a particle size of 0.6 mm;

[0148] S2. The hexadecyl trimethyl ammonium chloride was dissolved in deionized water to prepare a hexadecyl trimethyl ammonium chloride solution having a mass concentration of 2.3%;

[0149] S3. The powdered nitrile rubber and the cetyltrimethylammonium chloride solution were mixed in a mass ratio of 19:96, the temperature was set to 35 ° C, and the stirring speed was set to 200 rpm for 30 min;

[0150] S4. After stirring, the solid powder was filtered out, washed with deionized water, and dried to obtain a modified nitrile rubber powder;

[0151] The polyurethane resin particles are prepared by the following method:

[0152] D1. The polyurethane emulsion is spray dried and crushed to obtain polyurethane resin particles having a particle size of 0.4 mm;

[0153] The modified ETFE resin powder is prepared by the following method:

[0154] F1. Prepare a 1.7% octadecyltrimethylammonium bromide solution by mixing octadecyltrimethylammonium bromide with deionized water;

[0155] F2. The ETFE resin particles are crushed to a particle size of 0.2mm ETFE resin powder;

[0156] F3. Mix ETFE resin powder and octadecyltrimethylammonium bromide in a mass ratio of 15:97, set the temperature to 38°C, set the stirring speed to 150 rpm for 19 min, filter out, and dry to obtain modified ETFE resin powder.

[0157] The mixed filler consists of silicon dioxide, bamboo charcoal powder and zinc oxide in a mass ratio of 9:18:7.

[0158] The special tire for floor scrubber is prepared by the following method:

[0159] G1. The modified powdered nitrile rubber, polyurethane resin particles, modified ETFE resin powder and mixed filler were placed in a high-speed mixer and stirred at 170°C for 15 minutes, and then extruded in a twin-screw extruder with a set temperature of 310°C;

[0160] G2. After extrusion by the twin-screw extruder, the material is placed on a roller for refining, and the temperature is set to 185°C to obtain a tire material for a floor scrubber;

[0161] G3. Make the special tire for floor scrubber according to the required size requirements by using the special tire material for floor scrubber.

[0162] Comparative Example 3

[0163] A tire for a floor scrubber, comprising the following raw materials by mass fraction:

[0164] Modified powdered nitrile rubber 100 parts

[0165] 30 parts of pre-treated polyurethane resin particles

[0166] ETFE resin powder 20 parts

[0167] 12 parts of mixed filler;

[0168] The modified powdered nitrile rubber is prepared by the following method:

[0169] S1. The liquid nitrile rubber was spray dried and crushed to obtain a powdered nitrile rubber having a particle size of 0.6 mm;

[0170] S2. The hexadecyl trimethyl ammonium chloride was dissolved in deionized water to prepare a hexadecyl trimethyl ammonium chloride solution having a mass concentration of 2.3%;

[0171] S3. The powdered nitrile rubber and the cetyltrimethylammonium chloride solution were mixed in a mass ratio of 19:96, the temperature was set to 35 ° C, and the stirring speed was set to 200 rpm for 30 min;

[0172] S4. After stirring, the solid powder was filtered out, washed with deionized water, and dried to obtain a modified nitrile rubber powder;

[0173] The pretreated polyurethane resin particles are prepared by the following method:

[0174] D1. The polyurethane emulsion is spray dried and crushed to obtain polyurethane resin particles having a particle size of 0.4 mm;

[0175] D2. The polyurethane resin particles were placed in a constant temperature drying oven at 90°C and dried for 4 hours to obtain pretreated polyurethane resin particles;

[0176] Described ETFE resin powder is prepared by the following method:

[0177] F1. The ETFE resin particles are crushed to a particle size of 0.2mm ETFE resin powder;

[0178] The mixed filler consists of silicon dioxide, bamboo charcoal powder and zinc oxide in a mass ratio of 9:18:7.

[0179] The special tire for floor scrubber is prepared by the following method:

[0180] G1. The modified powdered nitrile rubber, pretreated polyurethane resin particles, ETFE resin powder and mixed filler were placed in a high-speed mixer and stirred at 170°C for 15 minutes, and then extruded in a twin-screw extruder with a set temperature of 310°C;

[0181] G2. After extrusion by the twin-screw extruder, the material is placed on a roller for refining, and the temperature is set to 185°C to obtain a tire material for a floor scrubber;

[0182] G3. Make the special tire for floor scrubber according to the required size requirements by using the special tire material for floor scrubber.

[0183] Comparative Example 4

[0184] The mixed filler consists of bamboo charcoal powder and zinc oxide in a mass ratio of 23:11, and the remaining components and operations are the same as those in Example 3.

[0185] Comparative Example 5

[0186] The mixed filler is composed of silicon dioxide and zinc oxide in a mass ratio of 18:16, and the remaining components and operations are the same as those in Example 3.

[0187] Comparative Example 6

[0188] The mixed filler is composed of silicon dioxide and bamboo charcoal powder in a mass ratio of 12:22, and the remaining components and operations are referred to Example 3.

[0189] Comparative Example 7

[0190] The mixed filler is composed of silicon dioxide, bamboo charcoal powder and zinc oxide in a mass ratio of 12:16:6, and the remaining components and operations are the same as those in Example 3.

[0191] Comparative Example 8

[0192] The mixed filler is composed of silicon dioxide, bamboo charcoal powder and zinc oxide in a mass ratio of 7:17:10, and the remaining components and operations are referred to Example 3.

[0193] Performance Testing

[0194] Wear performance test: The tire material for floor scrubbers prepared in step G2 of Examples 1-3 and Comparative Examples 1-8 was tested using the national standard GB / T3960-2016. The lower the wear rate, the better the wear resistance. Five parallel samples were set in each group, and the average value was taken. The wear rate calculation results are shown in Table 1.

[0195] Oil resistance test: The national standard GB / T1690-2010 was adopted for testing. The special tire material for floor scrubbers obtained in step G2 of Example 1-3 and Comparative Example 1-8 was used as a sample. The sample size was 25mm*50mm*2mm. The oil was 30% toluene + 70% isooctane. The sample was immersed for 168h at a temperature of 23°C. The tensile strength and elongation at break were tested. Five parallel samples were set in each group, and the average value was taken. The results are shown in Table 2.

[0196] Table 1

[0197]

[0198]

[0199] Table 2

[0200] Tensile strength(MPa) Elongation at break (%) Example 1 33.1 393 Example 2 31.8 381 Example 3 33.6 398 Comparative Example 1 25.1 303 Comparative Example 2 27.2 327 Comparative Example 3 25.9 315 Comparative Example 4 20.5 243 Comparative Example 5 18.3 231 Comparative Example 6 22.4 257 Comparative Example 7 23.7 277 Comparative Example 8 24.1 298

[0201] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A floor scrubber tire, characterized in that: By mass fraction, it contains the following raw materials: Modified powdered nitrile rubber 90-100 parts, 25-30 parts of pre-treated polyurethane resin particles, 15-20 parts of modified ETFE resin powder, 7-12 parts of mixed filler; The modified powdered nitrile rubber is prepared by the following method: S1. The liquid nitrile rubber is spray dried and crushed to obtain a powdered nitrile rubber having a particle size of 0.3-0.6 mm; S2. Dissolving cetyltrimethylammonium chloride in deionized water to prepare a cetyltrimethylammonium chloride solution; S3. Mix the powdered nitrile rubber with the cetyltrimethylammonium chloride solution, set the temperature to 32-35 ° C, set the stirring speed to 200 rpm for 28-30 min; S4. After stirring, the solid powder was filtered out, washed with deionized water, and dried to obtain a modified nitrile rubber powder; The pretreated polyurethane resin particles are prepared by the following method: D1. The polyurethane emulsion is spray dried and crushed to obtain polyurethane resin particles having a particle size of 0.2-0.4 mm; D2. The polyurethane resin particles are placed in a constant temperature drying oven at 85-90°C and dried for 2-4 hours to obtain pretreated polyurethane resin particles; The modified ETFE resin powder is prepared by the following method: F1. Prepare an octadecyltrimethylammonium bromide solution by mixing octadecyltrimethylammonium bromide with deionized water; F2. The ETFE resin particles are crushed to a particle size of 0.1-0.2mm ETFE resin powder; F3. The ETFE resin powder was mixed with octadecyltrimethylammonium bromide, the temperature was set to 37-38 ° C, the stirring speed was set to 150rpm for 17-19min, filtered out, and dried to obtain a modified ETFE resin powder; The mixed filler is composed of silicon dioxide, bamboo charcoal powder and zinc oxide; The particle size of the silicon dioxide is 1200-3000 mesh; The particle size of the bamboo charcoal powder is 100-200 mesh; The particle size of the zinc oxide is 0.1-10 μm; The mass ratio of the silicon dioxide, bamboo charcoal powder and zinc oxide is 9:18:

7.

2. A floor scrubber tire according to claim 1, characterized in that: By mass fraction, it contains the following raw materials: 94-96 parts of modified powdered nitrile rubber, 27-29 parts of pre-treated polyurethane resin particles, Modified ETFE resin powder 17-19 parts, Mix filler 9-11 parts.

3. A floor scrubber tire according to claim 1, characterized in that: The mass concentration of the hexadecyltrimethylammonium chloride solution described in step S2 is 1.9-2.3%.

4. A floor scrubber tire according to claim 1, characterized in that: The mass ratio of the powdered nitrile rubber to the hexadecyltrimethylammonium chloride solution in step S3 is 17-19:92-96.

5. The tire of a floor scrubber according to claim 1, characterized in that: The mass concentration of the octadecyltrimethylammonium bromide solution in step F1 is 1.5-1.7%.

6. A floor scrubber tire according to claim 1, characterized in that: The mass ratio of the ETFE resin powder to octadecyltrimethylammonium bromide in step F3 is 12-15:95-97.

7. The tire for a floor scrubber according to claim 1, characterized in that: The floor scrubber tire is prepared by the following method: G1. Place the modified powdered nitrile rubber, pretreated polyurethane resin particles, modified ETFE resin powder and mixed filler in a high-speed mixer and stir at 150-170°C for 13-15 minutes, then extrude in a twin-screw extruder with a set temperature of 290-310°C; G2. After extrusion by the twin-screw extruder, the material is placed on a roller for refining, and the temperature is set to 185°C to obtain the scrubber tire material; G3. Make scrubber tires from scrubber tire materials according to required size requirements.

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