Highly abrasion resistant asphalt mixture and method of making same

Abstract

The application discloses a kind of high wear-resistant asphalt mixture and preparation method thereof, wherein high wear-resistant asphalt mixture raw materials contain petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyether sulfone resin, octadecyl vinyl ether, magnesium dimethyl acrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomite and mineral powder.The application is modified to petroleum asphalt by using polytetrafluoroethylene rubber, fluorocarbon resin, polyether sulfone resin, magnesium dimethyl acrylate and vanadium diboride etc., and the high wear-resistant asphalt mixture obtained has the advantages of high wear resistance, high flexural tensile strength and high maximum flexural tensile strain performance.

Description

Technical Field

[0001] This invention relates to the field of asphalt technology, and in particular to a high wear-resistant asphalt mixture and its preparation method. Background Technology

[0002] Asphalt is a dark brown, complex mixture composed of hydrocarbons of varying molecular weights and their non-metallic derivatives. It is a high-viscosity organic liquid widely used in industries such as coatings, plastics, and rubber, as well as in road paving, with the highest frequency of use in this field. Asphalt pavement refers to various types of road surfaces constructed by incorporating road-grade asphalt materials into mineral materials. Asphalt binders enhance the ability of paving aggregates to resist damage from traffic and natural factors, resulting in a smooth, dust-free, impermeable, and durable surface. Therefore, asphalt pavement is widely used in road construction in my country.

[0003] However, traditional asphalt pavements have insufficient mechanical properties. After a period of service or due to excessive traffic loads, the pavement is worn down, resulting in problems such as potholes and even cracks.

[0004] Therefore, it is essential to provide a high wear-resistant asphalt mixture and its preparation method to address the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a high-abrasion-resistant asphalt mixture. This high-abrasion-resistant asphalt mixture has high abrasion resistance, high flexural tensile strength, and high maximum flexural tensile strain performance.

[0006] The above-mentioned objectives of the present invention are achieved through the following technical measures:

[0007] A high wear-resistant asphalt mixture is provided, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0008] By weight,

[0009] Petroleum asphalt: 100 parts;

[0010] Polytetrafluoroethylene rubber: 5 parts to 20 parts;

[0011] Fluorocarbon resin: 8 to 18 parts;

[0012] Polyethersulfone resin: 8 parts to 20 parts;

[0013] Octadecyl vinyl ether: 3 to 10 parts;

[0014] Magnesium dimethacrylate: 1 to 10 parts;

[0015] Polyester fiber: 1 part to 5 parts;

[0016] Vanadium diboride: 1 to 5 parts;

[0017] Titanium dioxide: 1 to 5 parts;

[0018] Diatomaceous earth: 5 to 10 parts;

[0019] Mineral powder: 1 to 5 parts.

[0020] Furthermore, in parts by weight,

[0021] Petroleum asphalt: 100 parts;

[0022] Polytetrafluoroethylene rubber: 10 parts to 15 parts;

[0023] Fluorocarbon resin: 10 to 12 parts;

[0024] Polyethersulfone resin: 12 to 18 parts;

[0025] Octadecyl vinyl ether: 6 to 8 parts;

[0026] Magnesium dimethacrylate: 3 to 8 parts;

[0027] Polyester fiber: 3 to 4 parts;

[0028] Vanadium diboride: 3 to 4 parts;

[0029] Titanium dioxide: 2 to 4 parts;

[0030] Diatomaceous earth: 6 to 8 parts;

[0031] Mineral powder: 2 to 3 parts.

[0032] Furthermore, in parts by weight,

[0033] Petroleum asphalt: 100 parts;

[0034] Polytetrafluoroethylene rubber: 12.7 parts;

[0035] Fluorocarbon resin: 11.9 parts;

[0036] Polyethersulfone resin: 15.8 parts;

[0037] Octadecyl vinyl ether: 7.5 parts;

[0038] Magnesium dimethacrylate: 4.5 parts;

[0039] Polyester fiber: 3.5 parts;

[0040] Vanadium diboride: 3.2 parts;

[0041] Titanium dioxide: 2.8 parts;

[0042] Diatomaceous earth: 7.5 parts;

[0043] Mineral powder: 2.5 parts.

[0044] Another objective of this invention is to overcome the shortcomings of existing technologies and provide a method for preparing a high-wear-resistant asphalt mixture. This method for preparing a high-wear-resistant asphalt mixture is simple, and the resulting high-wear-resistant asphalt mixture has the advantage of high wear resistance.

[0045] A method for preparing the aforementioned high abrasion-resistant asphalt mixture is provided, comprising the following steps:

[0046] S1. Add petroleum asphalt to the reactor, heat it, add polytetrafluoroethylene rubber, fluorocarbon resin and polyethersulfone resin, and then stir.

[0047] S2. Add polyester fiber, octadecyl vinyl ether and magnesium dimethacrylate to the reactor, and then stir.

[0048] S3. Add vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder to the reactor and control the temperature to stir, to obtain a high wear-resistant asphalt mixture.

[0049] Preferably, S1 specifically involves adding petroleum asphalt into a reaction vessel, heating it to 105°C–115°C, then adding polytetrafluoroethylene rubber, fluorocarbon resin, and polyethersulfone resin, and stirring at 100 rpm–200 rpm for 30 min–40 min at a temperature of 105°C–115°C.

[0050] Preferably, S2 specifically involves heating the reactor to 110°C–120°C, then adding polyester fiber, octadecyl vinyl ether, and magnesium dimethacrylate to the reactor, controlling the temperature at 110°C–120°C, and reacting at a speed of 180 rpm–250 rpm for 120 min–240 min.

[0051] Preferably, S3 specifically involves adding vanadium diboride, titanium dioxide, diatomaceous earth, and mineral powder to the reactor after controlling the temperature at 105℃~110℃, and stirring at 105℃~110℃ for 30min~40min to obtain a high wear-resistant asphalt mixture.

[0052] Preferably, S1 specifically involves adding petroleum asphalt into a reactor, heating it to 110°C, then adding polytetrafluoroethylene rubber, fluorocarbon resin, and polyethersulfone resin, and stirring at 150 rpm for 38 minutes at 110°C.

[0053] Preferably, S2 specifically involves heating the reactor to 115°C, adding polyester fiber, octadecyl vinyl ether and magnesium dimethacrylate to the reactor, controlling the temperature at 118°C, and reacting at 220 rpm for 200 min.

[0054] Preferably, S3 specifically involves adding vanadium diboride, titanium dioxide, diatomaceous earth, and mineral powder to the reactor after controlling the temperature at 106°C, and stirring at 150 rpm for 35 minutes to obtain a high wear-resistant asphalt mixture.

[0055] This invention discloses a high-wear-resistant asphalt mixture and its preparation method. The raw materials for the high-wear-resistant asphalt mixture include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth, and mineral powder. This invention modifies petroleum asphalt using polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, magnesium dimethacrylate, and vanadium diboride, resulting in a high-wear-resistant asphalt mixture with advantages such as high wear resistance, high flexural tensile strength, and high maximum flexural tensile strain performance. Detailed Implementation

[0056] The technical solution of the present invention will be further described with reference to the following embodiments. Unless otherwise specified, the raw materials used in the following embodiments are all commercially available products.

[0057] Example 1

[0058] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0059] By weight,

[0060] Petroleum asphalt: 100 parts;

[0061] Polytetrafluoroethylene rubber: 5 parts;

[0062] Fluorocarbon resin: 18 parts;

[0063] Polyethersulfone resin: 8 parts;

[0064] Octadecyl vinyl ether: 3 parts;

[0065] Magnesium dimethacrylate: 1 part;

[0066] Polyester fiber: 5 parts;

[0067] Vanadium diboride: 5 parts;

[0068] Titanium dioxide: 2 parts;

[0069] Diatomaceous earth: 6 parts;

[0070] Mineral powder: 5 parts.

[0071] The preparation method of this high abrasion-resistant asphalt mixture comprises the following steps:

[0072] S1. Add petroleum asphalt to the reactor, heat to 105°C, then add polytetrafluoroethylene rubber, fluorocarbon resin and polyethersulfone resin, and stir at 105°C and 200 rpm for 40 minutes.

[0073] S2. After heating the reactor to 110°C, add polyester fiber, octadecyl vinyl ether and magnesium dimethacrylate to the reactor, and control the temperature at 110°C and react at 180 rpm for 120 min.

[0074] S3. After controlling the temperature at 105℃, add vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder to the reactor, and control the temperature at 105℃. Stir at 100 rpm for 40 minutes to obtain a high wear-resistant asphalt mixture.

[0075] Example 2

[0076] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0077] By weight,

[0078] Petroleum asphalt: 100 parts;

[0079] Polytetrafluoroethylene rubber: 20 parts;

[0080] Fluorocarbon resin: 8 parts;

[0081] Polyethersulfone resin: 12 parts;

[0082] Octadecyl vinyl ether: 10 parts;

[0083] Magnesium dimethacrylate: 3 parts;

[0084] Polyester fiber: 3 parts;

[0085] Vanadium diboride: 1 part;

[0086] Titanium dioxide: 4 parts;

[0087] Diatomaceous earth: 8 parts;

[0088] Mineral powder: 2 parts.

[0089] The preparation method of this high abrasion-resistant asphalt mixture comprises the following steps:

[0090] S1. Add petroleum asphalt to the reactor, heat to 115°C, then add polytetrafluoroethylene rubber, fluorocarbon resin and polyethersulfone resin, and stir at 115°C and 200 rpm for 40 minutes.

[0091] S2. After heating the reactor to 120°C, add polyester fiber, octadecyl vinyl ether and magnesium dimethacrylate to the reactor, and control the temperature at 120°C and react at 200 rpm for 240 min.

[0092] S3. After controlling the temperature at 110℃, add vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder to the reactor, and control the temperature at 110℃. Stir at 200 rpm for 30 minutes to obtain a high wear-resistant asphalt mixture.

[0093] Example 3

[0094] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0095] By weight,

[0096] Petroleum asphalt: 100 parts;

[0097] Polytetrafluoroethylene rubber: 10 parts;

[0098] Fluorocarbon resin: 12 parts;

[0099] Polyethersulfone resin: 20 parts;

[0100] Octadecyl vinyl ether: 8 parts;

[0101] Magnesium dimethacrylate: 8 parts;

[0102] Polyester fiber: 4 parts;

[0103] Vanadium diboride: 4 parts;

[0104] Titanium dioxide: 1 part;

[0105] Diatomaceous earth: 5 parts;

[0106] Mineral powder: 3 parts.

[0107] The preparation method of this high abrasion-resistant asphalt mixture comprises the following steps:

[0108] S1. Add petroleum asphalt to the reactor, heat to 110°C, then add polytetrafluoroethylene rubber, fluorocarbon resin and polyethersulfone resin, and stir at 150 rpm for 38 minutes at 110°C.

[0109] S2. After heating the reactor to 115°C, add polyester fiber, octadecyl vinyl ether and magnesium dimethacrylate to the reactor, and control the temperature at 118°C and react at 220 rpm for 200 min.

[0110] S3. After controlling the temperature at 106℃, add vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder to the reactor, and control the temperature at 106℃. Stir at 150 rpm for 35 minutes to obtain a high wear-resistant asphalt mixture.

[0111] Example 4

[0112] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0113] By weight,

[0114] Petroleum asphalt: 100 parts;

[0115] Polytetrafluoroethylene rubber: 15 parts;

[0116] Fluorocarbon resin: 10 parts;

[0117] Polyethersulfone resin: 18 parts;

[0118] Octadecyl vinyl ether: 6 parts;

[0119] Magnesium dimethacrylate: 10 parts;

[0120] Polyester fiber: 1 part;

[0121] Vanadium diboride: 3 parts;

[0122] Titanium dioxide: 5 parts;

[0123] Diatomaceous earth: 10 parts;

[0124] Mineral powder: 1 part.

[0125] The preparation method of this high wear-resistant asphalt mixture is the same as that in Example 3.

[0126] Example 5

[0127] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0128] By weight,

[0129] Petroleum asphalt: 100 parts;

[0130] Polytetrafluoroethylene rubber: 12.7 parts;

[0131] Fluorocarbon resin: 11.9 parts;

[0132] Polyethersulfone resin: 15.8 parts;

[0133] Octadecyl vinyl ether: 7.5 parts;

[0134] Magnesium dimethacrylate: 4.5 parts;

[0135] Polyester fiber: 3.5 parts;

[0136] Vanadium diboride: 3.2 parts;

[0137] Titanium dioxide: 2.8 parts;

[0138] Diatomaceous earth: 7.5 parts;

[0139] Mineral powder: 2.5 parts.

[0140] The preparation method of this high wear-resistant asphalt mixture is the same as that in Example 3.

[0141] Comparative Example 1

[0142] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0143] By weight,

[0144] Petroleum asphalt: 100 parts;

[0145] Polytetrafluoroethylene rubber: 26 parts;

[0146] Fluorocarbon resin: 5 parts;

[0147] Polyethersulfone resin: 5 parts;

[0148] Octadecyl vinyl ether: 7.5 parts;

[0149] Magnesium dimethacrylate: 4.5 parts;

[0150] Polyester fiber: 3.5 parts;

[0151] Vanadium diboride: 3.2 parts;

[0152] Titanium dioxide: 2.8 parts;

[0153] Diatomaceous earth: 7.5 parts;

[0154] Mineral powder: 2.5 parts.

[0155] The preparation method of this high wear-resistant asphalt mixture is the same as that in Example 3.

[0156] Comparative Example 2

[0157] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0158] By weight,

[0159] Petroleum asphalt: 100 parts;

[0160] Polytetrafluoroethylene rubber: 5 parts;

[0161] Fluorocarbon resin: 18 parts;

[0162] Polyethersulfone resin: 23 parts;

[0163] Octadecyl vinyl ether: 7.5 parts;

[0164] Magnesium dimethacrylate: 4.5 parts;

[0165] Polyester fiber: 3.5 parts;

[0166] Vanadium diboride: 3.2 parts;

[0167] Titanium dioxide: 2.8 parts;

[0168] Diatomaceous earth: 7.5 parts;

[0169] Mineral powder: 2.5 parts.

[0170] The preparation method of this high wear-resistant asphalt mixture is the same as that in Example 3.

[0171] Comparative Example 3

[0172] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0173] By weight,

[0174] Petroleum asphalt: 100 parts;

[0175] Polytetrafluoroethylene rubber: 12.7 parts;

[0176] Fluorocarbon resin: 11.9 parts;

[0177] Polyethersulfone resin: 15.8 parts;

[0178] Octadecyl vinyl ether: 7.5 parts;

[0179] Magnesium dimethacrylate: 20 parts;

[0180] Polyester fiber: 3.5 parts;

[0181] Vanadium diboride: 3.2 parts;

[0182] Titanium dioxide: 2.8 parts;

[0183] Diatomaceous earth: 7.5 parts;

[0184] Mineral powder: 2.5 parts.

[0185] The preparation method of this high wear-resistant asphalt mixture is the same as that in Example 3.

[0186] Comparative Example 4

[0187] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0188] By weight,

[0189] Petroleum asphalt: 100 parts;

[0190] Fluorocarbon resin: 21.6 parts;

[0191] Polyethersulfone resin: 18.8 parts;

[0192] Octadecyl vinyl ether: 7.5 parts;

[0193] Magnesium dimethacrylate: 4.5 parts;

[0194] Polyester fiber: 3.5 parts;

[0195] Vanadium diboride: 3.2 parts;

[0196] Titanium dioxide: 2.8 parts;

[0197] Diatomaceous earth: 7.5 parts;

[0198] Mineral powder: 2.5 parts.

[0199] The preparation method of this high abrasion-resistant asphalt mixture comprises the following steps:

[0200] S1. Add petroleum asphalt to the reactor, heat to 110°C, add fluorocarbon resin and polyethersulfone resin, and stir at 150 rpm for 38 minutes at 110°C.

[0201] S2. After heating the reactor to 115°C, add polyester fiber, octadecyl vinyl ether and magnesium dimethacrylate to the reactor, and control the temperature at 118°C and react at 220 rpm for 200 min.

[0202] S3. After controlling the temperature at 106℃, add vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder to the reactor, and control the temperature at 106℃. Stir at 150 rpm for 35 minutes to obtain a high wear-resistant asphalt mixture.

[0203] Comparative Example 5

[0204] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0205] By weight,

[0206] Petroleum asphalt: 100 parts;

[0207] Polytetrafluoroethylene rubber: 23.5 parts;

[0208] Polyethersulfone resin: 16.9 parts;

[0209] Octadecyl vinyl ether: 7.5 parts;

[0210] Magnesium dimethacrylate: 4.5 parts;

[0211] Polyester fiber: 3.5 parts;

[0212] Vanadium diboride: 3.2 parts;

[0213] Titanium dioxide: 2.8 parts;

[0214] Diatomaceous earth: 7.5 parts;

[0215] Mineral powder: 2.5 parts.

[0216] The preparation method of this high abrasion-resistant asphalt mixture comprises the following steps:

[0217] S1. Add petroleum asphalt to the reactor, heat to 110°C, add polytetrafluoroethylene rubber and polyethersulfone resin, and stir at 150 rpm for 38 minutes at 110°C.

[0218] S2. After heating the reactor to 115°C, add polyester fiber, octadecyl vinyl ether and magnesium dimethacrylate to the reactor, and control the temperature at 118°C and react at 220 rpm for 200 min.

[0219] S3. After controlling the temperature at 106℃, add vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder to the reactor, and control the temperature at 106℃. Stir at 150 rpm for 35 minutes to obtain a high wear-resistant asphalt mixture.

[0220] Comparative Example 6

[0221] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0222] By weight,

[0223] Petroleum asphalt: 100 parts;

[0224] Polytetrafluoroethylene rubber: 22.5 parts;

[0225] Fluorocarbon resin: 17.9 parts;

[0226] Octadecyl vinyl ether: 7.5 parts;

[0227] Magnesium dimethacrylate: 4.5 parts;

[0228] Polyester fiber: 3.5 parts;

[0229] Vanadium diboride: 3.2 parts;

[0230] Titanium dioxide: 2.8 parts;

[0231] Diatomaceous earth: 7.5 parts;

[0232] Mineral powder: 2.5 parts.

[0233] The preparation method of this high abrasion-resistant asphalt mixture comprises the following steps:

[0234] S1. Add petroleum asphalt to the reactor, heat to 110°C, add polytetrafluoroethylene rubber and fluorocarbon resin, and stir at 150 rpm for 38 minutes at 110°C.

[0235] S2. After heating the reactor to 115°C, add polyester fiber, octadecyl vinyl ether and magnesium dimethacrylate to the reactor, and control the temperature at 118°C and react at 220 rpm for 200 min.

[0236] S3. After controlling the temperature at 106℃, add vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder to the reactor, and control the temperature at 106℃. Stir at 150 rpm for 35 minutes to obtain a high wear-resistant asphalt mixture.

[0237] Comparative Example 7

[0238] A high wear-resistant asphalt mixture, the raw materials of which include petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder.

[0239] By weight,

[0240] Petroleum asphalt: 100 parts;

[0241] Polytetrafluoroethylene rubber: 12.7 parts;

[0242] Fluorocarbon resin: 11.9 parts;

[0243] Polyethersulfone resin: 15.8 parts;

[0244] Octadecyl vinyl ether: 7.5 parts;

[0245] Magnesium dimethacrylate: 4.5 parts;

[0246] Polyester fiber: 3.5 parts;

[0247] Titanium dioxide: 6 parts;

[0248] Diatomaceous earth: 7.5 parts;

[0249] Mineral powder: 2.5 parts.

[0250] The preparation method of this high abrasion-resistant asphalt mixture comprises the following steps:

[0251] S1. Add petroleum asphalt to the reactor, heat to 110°C, then add polytetrafluoroethylene rubber, fluorocarbon resin and polyethersulfone resin, and stir at 150 rpm for 38 minutes at 110°C.

[0252] S2. After heating the reactor to 115°C, add polyester fiber, octadecyl vinyl ether and magnesium dimethacrylate to the reactor, and control the temperature at 118°C and react at 220 rpm for 200 min.

[0253] S3. After controlling the temperature at 106℃, add titanium dioxide, diatomaceous earth and mineral powder to the reactor, and control the temperature at 106℃. Stir at 150 rpm for 35 minutes to obtain a high wear-resistant asphalt mixture.

[0254] Comparative Example 8

[0255] A high abrasion-resistant asphalt mixture, using the same raw materials as in Example 3.

[0256] The preparation method of this high abrasion-resistant asphalt mixture comprises the following steps:

[0257] S1. Add petroleum asphalt to the reactor, heat to 110°C, then add polytetrafluoroethylene rubber, fluorocarbon resin and polyethersulfone resin, and stir at 150 rpm for 38 minutes at 110°C.

[0258] S2. After heating the reactor to 125°C, add polyester fiber, octadecyl vinyl ether and magnesium dimethacrylate to the reactor, and control the temperature at 125°C and react at 220 rpm for 300 min.

[0259] S3. After controlling the temperature at 106℃, add vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder to the reactor, and control the temperature at 106℃. Stir at 150 rpm for 35 minutes to obtain a high wear-resistant asphalt mixture.

[0260] Example of effect

[0261] According to the "Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering" (JTG E20-2011) issued by the Ministry of Transport of China, flexural tensile strength and maximum flexural tensile strain tests were conducted on the high abrasion-resistant asphalt mixtures obtained in Examples 1-5 and Comparative Examples 1-8; simultaneously, abrasion resistance tests were performed on the high abrasion-resistant asphalt mixtures obtained in Examples 1-5 and Comparative Examples 1-8. The abrasion resistance tests were conducted using an MMW-1 microcomputer-controlled vertical universal friction and wear testing machine, with a test load of 80 N, a rotation speed of 150 r / min, and a test time of 1.5 h. The test results are shown in Tables 1 and 2.

[0262] Table 1. Test results of high abrasion-resistant asphalt mixtures in Examples 1-5

[0263] project Example 1 Example 2 Example 3 Example 4 Example 5 Flexural tensile strength / MPa 10.61 10.26 11.64 10.31 11.43 Maximum bending tensile strain / με 3868 3831 4014 3796 4003 Wear amount / g 0.25 0.21 0.15 0.23 0.13

[0264] Table 2. Performance test results of modified asphalt in Comparative Examples 1-7

[0265] project Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Comparative Example 7 Comparative Example 8 Flexural tensile strength / MPa 8.65 9.23 9.73 7.31 7.52 7.46 10.07 5.83 <![CDATA[Maximum flexural tensile strain / μ ε]]> 3169 3218 3352 2837 2631 2821 3621 2276 Wear amount / g 0.73 0.64 0.66 1.32 1.09 1.43 0.56 3.32

[0266] As can be seen from the data in Tables 1 and 2, the abrasion resistance, flexural strength, and maximum flexural strain of the high abrasion-resistant asphalt mixtures in Examples 1-5 are all higher than those in Comparative Examples 1 to 8. Furthermore, as shown by Comparative Examples 4 to 7, the abrasion resistance of petroleum asphalt can only be significantly improved in the presence of polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, and vanadium diboride. The above data also demonstrate that the present invention, through the rational proportioning of each component and appropriate preparation conditions, can further improve the aforementioned properties.

[0267] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A method for preparing a high-wear-resistant asphalt mixture, characterized in that: The raw materials consist of petroleum asphalt, polytetrafluoroethylene rubber, fluorocarbon resin, polyethersulfone resin, octadecyl vinyl ether, magnesium dimethacrylate, polyester fiber, vanadium diborate, titanium dioxide, diatomaceous earth, and mineral powder. By weight, Petroleum asphalt: 100 parts; Polytetrafluoroethylene rubber: 5 parts to 20 parts; Fluorocarbon resin: 8 to 18 parts; Polyethersulfone resin: 8 parts to 20 parts; Octadecyl vinyl ether: 3 to 10 parts; Magnesium dimethacrylate: 1 to 10 parts; Polyester fiber: 1 part to 5 parts; Vanadium diboride: 1 to 5 parts; Titanium dioxide: 1 to 5 parts; Diatomaceous earth: 5 to 10 parts; Mineral powder: 1 to 5 parts; It is obtained through the following steps: S1. Add petroleum asphalt to the reactor, heat it, add polytetrafluoroethylene rubber, fluorocarbon resin and polyethersulfone resin, and then stir. S2. Add polyester fiber, octadecyl vinyl ether and magnesium dimethacrylate to the reactor, and then stir. S3. Add vanadium diboride, titanium dioxide, diatomaceous earth and mineral powder to the reactor and control the temperature to stir to obtain a high wear-resistant asphalt mixture. Specifically, S2 involves heating the reactor to 110°C–120°C, then adding polyester fiber, octadecyl vinyl ether, and magnesium dimethacrylate to the reactor, controlling the temperature at 110°C–120°C, and reacting at a speed of 180 rpm–250 rpm for 120 min–240 min.

2. The method for preparing high abrasion-resistant asphalt mixture according to claim 1, characterized in that: By weight, Petroleum asphalt: 100 parts; Polytetrafluoroethylene rubber: 10 parts to 15 parts; Fluorocarbon resin: 10 to 12 parts; Polyethersulfone resin: 12 to 18 parts; Octadecyl vinyl ether: 6 to 8 parts; Magnesium dimethacrylate: 3 to 8 parts; Polyester fiber: 3 to 4 parts; Vanadium diboride: 3 to 4 parts; Titanium dioxide: 2 to 4 parts; Diatomaceous earth: 6 to 8 parts; Mineral powder: 2 to 3 parts.

3. The method for preparing high abrasion-resistant asphalt mixture according to claim 2, characterized in that: By weight, Petroleum asphalt: 100 parts; Polytetrafluoroethylene rubber: 12.7 parts; Fluorocarbon resin: 11.9 parts; Polyethersulfone resin: 15.8 parts; Octadecyl vinyl ether: 7.5 parts; Magnesium dimethacrylate: 4.5 parts; Polyester fiber: 3.5 parts; Vanadium diboride: 3.2 parts; Titanium dioxide: 2.8 parts; Diatomaceous earth: 7.5 parts; Mineral powder: 2.5 parts.

4. The method for preparing high abrasion-resistant asphalt mixture according to claim 3, characterized in that: Specifically, S2 involves heating the reactor to 115°C, adding polyester fiber, octadecyl vinyl ether, and magnesium dimethacrylate to the reactor, controlling the temperature at 118°C, and reacting at 220 rpm for 200 min.

5. The method for preparing high abrasion-resistant asphalt mixture according to claim 4, characterized in that: S1 specifically involves adding petroleum asphalt into a reaction vessel, heating it to 105℃~115℃, then adding polytetrafluoroethylene rubber, fluorocarbon resin, and polyethersulfone resin, and stirring at 100rpm~200rpm for 30min~40min at a temperature of 105℃~115℃.

6. The method for preparing high abrasion-resistant asphalt mixture according to claim 5, characterized in that: Specifically, S3 involves adding vanadium diboride, titanium dioxide, diatomaceous earth, and mineral powder to a reactor after controlling the temperature at 105℃~110℃, and stirring at 100rpm~200rpm for 30min~40min to obtain a high wear-resistant asphalt mixture.

7. The method for preparing high abrasion-resistant asphalt mixture according to claim 6, characterized in that: S1 specifically involves adding petroleum asphalt into a reaction vessel, heating it to 110°C, then adding polytetrafluoroethylene rubber, fluorocarbon resin, and polyethersulfone resin, and stirring at 150 rpm for 38 minutes at 110°C. Specifically, S3 involves adding vanadium diboride, titanium dioxide, diatomaceous earth, and mineral powder to the reactor after controlling the temperature at 106°C, and stirring at 150 rpm for 35 minutes to obtain a high wear-resistant asphalt mixture.