CN111019369A - Asphalt penetrant and preparation method and application thereof - Google Patents
Asphalt penetrant and preparation method and application thereof Download PDFInfo
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- CN111019369A CN111019369A CN201911353820.8A CN201911353820A CN111019369A CN 111019369 A CN111019369 A CN 111019369A CN 201911353820 A CN201911353820 A CN 201911353820A CN 111019369 A CN111019369 A CN 111019369A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses an asphalt penetrant, a preparation method and application thereof. The asphalt penetrant comprises the following components: 60-95 parts by weight of base oil, 3-10 parts by weight of zinc dialkyl dithiophosphate, 1-15 parts by weight of stabilizer and 2-20 parts by weight of solubilizer. The asphalt penetrant has low cost, and can improve the softening effect of aged asphalt, thereby solving the problem of compatible permeability of new and old asphalt and improving the performance of regenerated asphalt mixture.
Description
Technical Field
The invention relates to an asphalt penetrant, a preparation method thereof and application thereof.
Background
In recent years, the public transportation industry in China is rapidly developed, and a highway network taking a highway as a trunk line and taking national roads, provincial roads and other grades of roads as branch lines is formed. The highway maintenance cost is huge every year, and a large amount of waste asphalt mixture generated causes huge harm to the environment and huge waste of a large amount of high-quality asphalt. Therefore, the recycling of the aged asphalt mixture is of great significance to resource conservation and environmental protection bureau.
At present, asphalt regeneration products on the market mostly have the defects of large mixing amount, uneconomical property, poor ageing resistance, low intermiscibility with aged asphalt, insufficient high-temperature stability and the like. CN105778525B discloses a vegetable oil-based recycled asphalt, which comprises recycled aged asphalt and a vegetable oil-based asphalt regenerant, wherein the vegetable oil-based asphalt regenerant comprises a light base oil component, a stabilizing component and a modifying component, and the light base oil is light vegetable oil obtained by pretreating waste edible oil. Such regenerants have poor high temperature stability. CN109082132A discloses an aged asphalt compound regenerant based on recycled grease, which consists of the following components: waste engine oil, waste edible oil, desulfurized rubber powder, epoxy resin and nano TiO2. Such regenerants use nanomaterials, resulting in higher costs. CN109337390A discloses a waste vegetable oil-based warm mix asphalt regenerant and a preparation method thereof, wherein the waste vegetable oil-based warm mix asphalt regenerant comprises waste vegetable oil, a penetrating agent, a reinforcing agent, a stabilizing agent and an anti-aging agent. Obtained by using such a regenerating agentThe raw asphalt has poor fatigue resistance. In view of the above, there remains a need for improvements in existing asphalt penetrants.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an asphalt penetrant which is low in cost, and can improve penetration, ductility and softening point of aged asphalt with good softening effect. Furthermore, the regenerated asphalt prepared by the asphalt penetrant has better anti-fatigue capability. Another object of the present invention is to provide a method for preparing the asphalt penetrant, which can fully react the components to obtain an asphalt penetrant with good performance. Still another object of the present invention is to provide the use of the above asphalt penetrant.
The invention provides an asphalt penetrant, which comprises the following components:
60 to 95 parts by weight of a base oil,
3 to 10 parts by weight of zinc dialkyldithiophosphate,
1 to 15 parts by weight of a stabilizer, and
2-20 parts by weight of a solubilizer;
wherein the base oil is selected from one or more of waste engine oil, soybean oil, peanut oil, sesame oil, bio-oil, kitchen waste oil and aromatic oil;
wherein the stabilizer is selected from one or more of epoxidized soybean oil, petroleum resin, dioctyl phthalate and waste rubber powder;
wherein, the solubilizer is selected from one or more of alkylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether.
The asphalt penetrant according to the present invention preferably comprises the following components:
70 to 90 parts by weight of a base oil,
5 to 8 parts by weight of zinc dialkyldithiophosphate,
3 to 8 parts by weight of a stabilizer, and
2-10 parts by weight of a solubilizer.
The asphalt penetrant according to the present invention is preferably composed of the following components:
60 to 95 parts by weight of a base oil,
3 to 10 parts by weight of zinc dialkyldithiophosphate,
1 to 15 parts by weight of a stabilizer, and
2-20 parts by weight of a solubilizer.
The asphalt penetrant according to the present invention is preferably composed of the following components:
70 to 90 parts by weight of a base oil,
5 to 8 parts by weight of zinc dialkyldithiophosphate,
3 to 8 parts by weight of a stabilizer, and
2-10 parts by weight of a solubilizer.
According to the asphalt penetrant of the present invention, preferably, the base oil is selected from one or more of waste engine oil, bio-oil, and kitchen waste grease; the stabilizer is selected from one or more of epoxidized soybean oil, petroleum resin and waste rubber powder; the solubilizer is alkylphenol polyoxyethylene.
The asphalt penetrant according to the present invention is preferably, the base oil is used oil; the stabilizer is selected from epoxidized soybean oil; the solubilizer is polyoxyethylene octyl phenol ether OP-10.
The invention also provides a preparation method of the asphalt penetrant, which comprises the step of shearing and dispersing a mixture containing base oil, zinc dialkyl dithiophosphate, a stabilizer and a solubilizer at 110-160 ℃ for 1-5 hours at the rotating speed of 2000-6000 rpm to obtain the asphalt penetrant.
According to the preparation method provided by the invention, the temperature of shearing dispersion is preferably 120-150 ℃, the rotating speed is 3000-5000 rpm, and the time is 1-3 h.
The invention also provides the application of the asphalt penetrant in regenerating aged asphalt.
According to the application of the invention, the asphalt penetrant is preferably added in an amount of 6-12 wt% of the aged asphalt.
The invention uses base oil, zinc dialkyl dithiophosphate, stabilizer and solubilizer as main components to obtain the asphalt penetrant with good performance. All the components are matched with each other, so that the regeneration effect of the aged asphalt is good. The invention does not use expensive nanometer materials, and the main raw material is waste engine oil, thereby having lower cost. According to the preferable technical scheme, the asphalt penetrant can improve the softening effect of aged asphalt, improve the anti-fatigue capability and improve the high-temperature stability.
Drawings
FIG. 1 is a thermogravimetric analysis of the reclaimed asphalt of example 1.
Detailed Description
The present invention will be further described with reference to the following specific examples, but the scope of the present invention is not limited thereto.
< asphalt penetrant >
The asphalt penetrant comprises the following components: base oil, zinc dialkyl dithiophosphate, stabilizer and solubilizer. According to one embodiment of the present invention, the asphalt penetrant of the present invention is composed of the following components: base oil, zinc dialkyl dithiophosphate, stabilizer and solubilizer.
The base oil is selected from one or more of waste engine oil, soybean oil, peanut oil, sesame oil, bio-oil, kitchen waste oil and aromatic oil. Preferably, the base oil is selected from one or more of waste engine oil, bio-oil and kitchen waste grease. More preferably, the base oil is a used oil. The amount of the base oil may be 60 to 95 parts by weight, preferably 70 to 90 parts by weight, and more preferably 75 to 80 parts by weight.
The zinc dialkyldithiophosphate of the present invention may be used in an amount of 3 to 10 parts by weight, preferably 5 to 8 parts by weight, and more preferably 6 to 7 parts by weight.
The stabilizer of the invention can be selected from one or more of epoxidized soybean oil, petroleum resin, dioctyl phthalate and waste rubber powder. Preferably, the stabilizer is selected from one or more of epoxidized soybean oil, petroleum resin and waste rubber powder. More preferably, the stabilizer is selected from epoxidized soybean oil. The amount of the stabilizer may be 1 to 15 parts by weight, preferably 3 to 8 parts by weight, and more preferably 5 to 7 parts by weight.
The solubilizer can be selected from one or more of alkylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether. Preferably, the solubilizer is alkylphenol ethoxylates. The alkylphenol ethoxylates are polymers of alkylphenol and ethylene oxide. Examples of alkylphenol ethoxylates include, but are not limited to, Nonylphenol Polyoxyethylene Ether (NPEO), octylphenol polyoxyethylene ether (opoo), dodecylpolyoxyethylene ether (DPEO), and dinonylphenol polyoxyethylene ether (DNPEO). More preferably, the solubilizer is polyoxyethylene octylphenol ether OP-10. The amount of the solubilizer may be 2 to 20 parts by weight, preferably 2 to 10 parts by weight, and more preferably 6 to 9 parts by weight.
The invention finds that the mixture of base oil, zinc dialkyl dithiophosphate, stabilizer and solubilizer is beneficial to improving the penetration degree of the recycled asphalt and reducing the softening point.
In certain embodiments, the asphalt penetrant of the present invention comprises the following components: 60-95 parts by weight of base oil, 3-10 parts by weight of zinc dialkyl dithiophosphate, 1-15 parts by weight of stabilizer and 2-20 parts by weight of solubilizer; preferably, the asphalt penetrant comprises the following components: 70-90 parts by weight of base oil, 5-8 parts by weight of zinc dialkyl dithiophosphate, 3-8 parts by weight of stabilizer and 2-10 parts by weight of solubilizer. The base oil is selected from one or more of waste engine oil, soybean oil, peanut oil, sesame oil, bio-oil, kitchen waste grease and aromatic oil, and the stabilizer is selected from one or more of epoxidized soybean oil, petroleum resin, dioctyl phthalate and waste rubber powder; the solubilizer is selected from one or more of alkylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether.
In other embodiments, the asphalt penetrant of the present invention consists of: 60-95 parts by weight of base oil, 3-10 parts by weight of zinc dialkyl dithiophosphate, 1-15 parts by weight of stabilizer and 2-20 parts by weight of solubilizer. Preferably, the asphalt penetrant consists of the following components: 70-90 parts by weight of base oil, 5-8 parts by weight of zinc dialkyl dithiophosphate, 3-8 parts by weight of stabilizer and 2-10 parts by weight of solubilizer. The base oil is selected from one or more of waste engine oil, soybean oil, peanut oil, sesame oil, bio-oil, kitchen waste grease and aromatic oil, and the stabilizer is selected from one or more of epoxidized soybean oil, petroleum resin, dioctyl phthalate and waste rubber powder; the solubilizer is selected from one or more of alkylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether.
According to one embodiment of the present invention, the asphalt penetrant of the present invention comprises the following components: 60-95 parts of waste engine oil, 3-10 parts of zinc dialkyl dithiophosphate, 1-15 parts of epoxidized soybean oil and 2-20 parts of polyoxyethylene octyl phenol ether OP-10. Preferably, the asphalt penetrant comprises the following components: 70-90 parts of waste engine oil, 5-8 parts of zinc dialkyl dithiophosphate, 3-8 parts of epoxidized soybean oil and 2-10 parts of polyoxyethylene octyl phenol ether OP-10.
According to another embodiment of the present invention, the asphalt penetrant of the present invention is composed of the following components: 60-95 parts of waste engine oil, 3-10 parts of zinc dialkyl dithiophosphate, 1-15 parts of epoxidized soybean oil and 2-20 parts of polyoxyethylene octyl phenol ether OP-10. Preferably, the asphalt penetrant consists of the following components: 70-90 parts of waste engine oil, 5-8 parts of zinc dialkyl dithiophosphate, 3-8 parts of epoxidized soybean oil and 2-10 parts of polyoxyethylene octyl phenol ether OP-10.
< preparation of asphalt penetrant >
Shearing and dispersing a mixture containing base oil, zinc dialkyl dithiophosphate, a stabilizer and a solubilizer at 110-160 ℃ for 1-5 h under the condition that the rotating speed is 2000-6000 rpm to obtain the asphalt penetrant. The amounts of the respective raw materials were as described above.
The mixed liquid is sheared and dispersed in a high-speed shearing machine. The temperature of the shearing dispersion is 110-160 ℃, preferably 120-150 ℃, and more preferably 120-130 ℃. The rotation speed of the shear dispersion is 2000-6000 rpm, preferably 3000-5000 rpm, and more preferably 3000-3500 rpm. The time for shearing and dispersing is 1-5 h, preferably 1-3 h, and more preferably 2-3 h. Therefore, the components can be uniformly dispersed, and the cost is saved.
< use >
The invention uses base oil, zinc dialkyl dithiophosphate, stabilizer and solubilizer as main components to obtain the asphalt penetrant with good performance. It can be used for regenerating aged asphalt. The addition amount of the asphalt penetrant is 6-12 wt%, preferably 6-9 wt%, and more preferably 6-7 wt% of the weight of the aged asphalt. Therefore, the consumption of the asphalt penetrant is saved, the softening effect of the aged asphalt is improved, the anti-fatigue capability is improved, and the high-temperature stability is improved.
The following test methods of examples and comparative examples are described below:
penetration degree: the determination is carried out according to JTGE20-2011 'road engineering asphalt and asphalt mixture test specification' T0604-2011 'asphalt penetration test'.
Ductility: the measurement is carried out according to JTGE20-2011 'road engineering asphalt and asphalt mixture test specification' T0605-2011 'asphalt ductility test'.
Softening point: the measurement is carried out according to JTGE20-2011 road engineering asphalt and asphalt mixture test specification T0606-2011 asphalt softening point test (ring and ball method).
Rut factor: the determination is carried out according to JTGE20-2011 road engineering asphalt and asphalt mixture test specification T0628-2011 asphalt rheological property test (dynamic shear rheometer method).
Fatigue factor: the determination is carried out according to JTGE20-2011 road engineering asphalt and asphalt mixture test specification T0628-2011 asphalt rheological property test (dynamic shear rheometer method).
High-temperature stability: the measurement was carried out using a thermogravimetric analyzer.
Example 1
(1) 80 parts by weight of used engine oil, 6 parts by weight of zinc dialkyl dithiophosphate, 5 parts by weight of epoxidized soybean oil and 9 parts by weight of polyoxyethylene octyl phenol ether OP-10 are mixed to form a uniformly mixed solution.
(2) And placing the mixed solution in a high-speed shearing machine, and shearing and dispersing for 2 hours at the temperature of 120 ℃ and the rotating speed of 3000 r/min to obtain the asphalt penetrant.
(3) The resulting asphalt penetrant was blended into aged asphalt to obtain regenerated asphalt containing 6 wt% asphalt penetrant.
Example 2
(1) 80 parts by weight of used engine oil, 6 parts by weight of zinc dialkyl dithiophosphate, 5 parts by weight of epoxidized soybean oil and 9 parts by weight of polyoxyethylene octyl phenol ether OP-10 are mixed to form a uniformly mixed solution.
(2) And placing the mixed solution in a high-speed shearing machine, and shearing and dispersing for 2 hours at the temperature of 120 ℃ and the rotating speed of 3000 r/min to obtain the asphalt penetrant.
(3) The resulting asphalt penetrant was blended into aged asphalt to produce a reclaimed asphalt containing 8 wt% asphalt penetrant.
Example 3
(1) 75 parts by weight of used engine oil, 7 parts by weight of zinc dialkyl dithiophosphate, 6 parts by weight of epoxidized soybean oil and 8 parts by weight of polyoxyethylene octyl phenol ether OP-10 are mixed to form a uniformly mixed solution.
(2) And placing the mixed solution in a high-speed shearing machine, and shearing and dispersing for 2 hours at the temperature of 120 ℃ and the rotating speed of 3000 r/min to obtain the asphalt penetrant.
(3) The resulting asphalt penetrant was blended into aged asphalt to obtain regenerated asphalt containing 6 wt% asphalt penetrant.
Example 4
(1) 75 parts by weight of used engine oil, 7 parts by weight of zinc dialkyl dithiophosphate, 6 parts by weight of epoxidized soybean oil and 8 parts by weight of polyoxyethylene octyl phenol ether OP-10 are mixed to form a uniformly mixed solution.
(2) And placing the mixed solution in a high-speed shearing machine, and shearing and dispersing for 2 hours at the temperature of 120 ℃ and the rotating speed of 3000 r/min to obtain the asphalt penetrant.
(3) The resulting asphalt penetrant was blended into aged asphalt to produce a reclaimed asphalt containing 8 wt% asphalt penetrant.
Comparative example 1
The asphalt penetrant obtained in example 1 was blended into aged asphalt to obtain regenerated asphalt containing 2 wt% of asphalt penetrant.
Comparative example 2
The asphalt penetrant obtained in example 1 was blended into aged asphalt to obtain regenerated asphalt containing 4 wt% of asphalt penetrant.
The test results of the reclaimed asphalt, the No. 70 base asphalt and the aged asphalt of examples 1 to 4 and comparative examples 1 to 2 are shown in the following table and FIG. 1. As can be seen from FIG. 1, the regenerated asphalt to which the asphalt penetrant of the present invention is added has almost no weight loss at 200 ℃.
TABLE 1
| Numbering | Penetration degree (0.1mm) | Ductility (cm) | Softening Point (. degree. C.) |
| No. 70 base asphalt | 68.5 | >100 | 48.3 |
| Aged asphalt | 36.6 | 10.3 | 58.9 |
| Example 1 | 77.0 | >100 | 48.5 |
| Example 2 | 90.2 | >100 | 45.1 |
| Example 3 | 76.7 | >100 | 48.3 |
| Example 4 | 91.1 | >100 | 45.4 |
| Comparative example 1 | 48.5 | 55.7 | 54 |
| Comparative example 2 | 65.9 | 93 | 49.6 |
TABLE 2 dynamic shear rheology test rut factor test
| |
40℃ | 46℃ | 52℃ | 58℃ | 64℃ | 70℃ | 76℃ | 82℃ |
| Aged asphalt | 170.3 | 77.5 | 36 | 19 | 12 | 9 | 8 | 7 |
| No. 70 base asphalt | 67 | 31 | 15 | 9 | 5 | 4 | 4 | 3 |
| Example 1 | 42 | 20 | 10 | 8 | 5 | 4 | 4 | 3 |
| Example 2 | 40 | 19 | 10 | 8 | 5 | 4 | 4 | 3 |
| Example 3 | 41 | 19 | 9 | 8 | 5 | 5 | 4 | 4 |
| Example 4 | 41 | 20 | 11 | 8 | 6 | 5 | 4 | 4 |
| Comparative example 1 | 121 | 67 | 35 | 18 | 12 | 10 | 8 | 7 |
| Comparative example 2 | 99 | 49 | 27 | 15 | 10 | 9 | 8 | 7 |
As can be seen, a lower rut factor indicates a better softening effect on the aged asphalt.
TABLE 3 dynamic shear rheology test fatigue factor test
| |
40℃ | 46℃ | 52℃ | 58℃ | 64℃ | 70℃ | 76℃ | 82℃ |
| Aged asphalt | 143 | 67 | 32 | 17 | 11 | 8 | 6.6 | 6 |
| No. 70 base asphalt | 62 | 29 | 15 | 9 | 7 | 6 | 6 | 5 |
| Example 1 | 38 | 18 | 10 | 8 | 7 | 5 | 5 | 5 |
| Example 2 | 36 | 17 | 9 | 8 | 7 | 5 | 5 | 4 |
| Example 3 | 39 | 19 | 11 | 9 | 7 | 5 | 5 | 4 |
| Example 4 | 36 | 17 | 10 | 9 | 7 | 5 | 5 | 4 |
| Comparative example 1 | 85 | 54 | 24 | 14 | 11 | 8 | 6 | 6 |
| Comparative example 2 | 76 | 33 | 19 | 12 | 10 | 8 | 6 | 5 |
As can be seen from the table, the lower the fatigue factor, the better the fatigue resistance of the reclaimed asphalt.
The present invention is not limited to the above-described embodiments, and any variations, modifications, and substitutions which may occur to those skilled in the art may be made without departing from the spirit of the invention.
Claims (10)
1. The asphalt penetrant is characterized by comprising the following components:
60 to 95 parts by weight of a base oil,
3 to 10 parts by weight of zinc dialkyldithiophosphate,
1 to 15 parts by weight of a stabilizer, and
2-20 parts by weight of a solubilizer;
wherein the base oil is selected from one or more of waste engine oil, soybean oil, peanut oil, sesame oil, bio-oil, kitchen waste oil and aromatic oil;
wherein the stabilizer is selected from one or more of epoxidized soybean oil, petroleum resin, dioctyl phthalate and waste rubber powder;
wherein, the solubilizer is selected from one or more of alkylphenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether.
2. The asphalt penetrant of claim 1, characterized by comprising the following components:
70 to 90 parts by weight of a base oil,
5 to 8 parts by weight of zinc dialkyldithiophosphate,
3 to 8 parts by weight of a stabilizer, and
2-10 parts by weight of a solubilizer.
3. The asphalt penetrant of claim 1, consisting of:
60 to 95 parts by weight of a base oil,
3 to 10 parts by weight of zinc dialkyldithiophosphate,
1 to 15 parts by weight of a stabilizer, and
2-20 parts by weight of a solubilizer.
4. The asphalt penetrant of claim 1, consisting of:
70 to 90 parts by weight of a base oil,
5 to 8 parts by weight of zinc dialkyldithiophosphate,
3 to 8 parts by weight of a stabilizer, and
2-10 parts by weight of a solubilizer.
5. The asphalt penetrant according to any one of claims 1 to 4, characterized in that:
wherein the base oil is selected from one or more of waste engine oil, biological oil and kitchen waste grease;
wherein the stabilizer is selected from one or more of epoxidized soybean oil, petroleum resin and waste rubber powder;
wherein, the solubilizer is alkylphenol polyoxyethylene.
6. The asphalt penetrant of claim 5, wherein the base oil is used oil; the stabilizer is selected from epoxidized soybean oil; the solubilizer is polyoxyethylene octyl phenol ether OP-10.
7. The method for producing an asphalt penetrant according to any one of claims 1 to 6, characterized in that: shearing and dispersing a mixture containing base oil, zinc dialkyl dithiophosphate, a stabilizer and a solubilizer at 110-160 ℃ for 1-5 h under the condition that the rotating speed is 2000-6000 rpm to obtain the asphalt penetrant.
8. The method of claim 7, wherein: the temperature of shearing dispersion is 120-150 ℃, the rotating speed is 3000-5000 rpm, and the time is 1-3 h.
9. Use of the asphalt penetrant according to any one of claims 1-6 in regenerating aged asphalt.
10. Use according to claim 9, characterized in that the bitumen penetrant is added in an amount of 6 to 12 wt% based on the weight of the aged bitumen.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114806199A (en) * | 2022-05-10 | 2022-07-29 | 长安大学 | Composite waste engine oil-based asphalt regenerant and preparation method and application thereof |
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