CN113548830B - Acidic aggregate bio-based asphalt anti-stripping agent and preparation method thereof - Google Patents
Acidic aggregate bio-based asphalt anti-stripping agent and preparation method thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
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Abstract
The invention relates to the technical field of pavement asphalt, in particular to an acid aggregate bio-based asphalt anti-stripping agent and a preparation method thereof, 68-72 parts of plant asphalt, 10-14 parts of polybutadiene diol, 0.05 part of catalyst, 3-5 parts of wheat gluten, 2-4 parts of furfural, 3-5 parts of polyethyleneimine, 3-5 parts of triethanolamine and 2.95 parts of auxiliary agent. The invention provides an acid aggregate bio-based asphalt anti-stripping agent, wherein the main raw material is plant asphalt which is natural, environment-friendly and wide in source; the wheat gluten and triethanolamine react to form a three-dimensional network structure, and the three-dimensional network structure has good viscoelasticity, extensibility, thermal coagulability, emulsibility and film formability. Furfural reacts with polyethyleneimine to form a crown structure with strong complexing ability, and strong complexing occurs between the furfural and the acidic aggregate, so that the bonding performance is improved; meanwhile, the asphalt anti-stripping agent can also reduce the interface energy between asphalt and aggregate to form a stable system.
Description
Technical Field
The invention relates to the technical field of pavement asphalt, in particular to an acidic aggregate bio-based asphalt anti-stripping agent and a preparation method thereof.
Background
In recent years, the development of expressways in China is fast, high-quality stones for paving asphalt pavements are less and less, and the utilization of acid stones is more and more urgent to meet the development requirements of expressways. The acid stone material such as coarse amphibole, gabby rock, granite, etc. has high strength and high wear resistance, and is one excellent road material, but the acid stone material has poor adhesion to asphalt, so that under the condition of porous water, water entering the pores of the road surface produces dynamic water pressure or vacuum negative pressure suction and circulation to make water invade the interface between asphalt and aggregate and to make asphalt film strip from the aggregate surface.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides the acidic aggregate bio-based asphalt anti-stripping agent by deeply researching the influence of the microscopic properties of asphalt, aggregate and an asphalt-aggregate interface on the adhesiveness, which can obviously improve the adhesiveness of asphalt and acidic aggregate in a mixture, and has the advantages of wide sources of raw materials for preparation, low price, environmental protection and no pollution. Meanwhile, the invention provides a preparation method thereof.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
the invention provides an acidic aggregate bio-based asphalt anti-stripping agent, which is mainly prepared from the following raw materials: 68-72 parts of plant asphalt, 10-14 parts of polybutadiene diol, 0.05 part of catalyst, 3-5 parts of wheat gluten, 2-4 parts of furfural, 3-5 parts of polyethyleneimine, 3-5 parts of triethanolamine and 2.95 parts of auxiliary agent.
Specifically, the plant asphalt adopted in the invention is waste residue generated in the process of processing the plant oil, is natural and environment-friendly, and has wide raw material source and low price. However, the vegetable asphalt has larger polarity and poorer compatibility with the asphalt, so the polybutadiene diol is introduced into the invention to carry out esterification reaction with the vegetable asphalt to form the higher fatty acid butadiene diol ester. Therefore, the compatibility of the plant asphalt and the asphalt can be effectively improved, and the generated higher fatty acid butadiene diol ester also has the viscoelastic property of liquid rubber.
The vital components of the wheat gluten are glutenin, gliadin and a small amount of starch; wherein the glutenin has small molecular weight, spherical shape, and good extensibility. The gliadin has a large molecular weight, is fibrous and has strong elasticity. Protein polypeptide contained in the wheat gluten and triethanolamine form protein gel with a network structure under the action of strong hydrogen bonds, and the protein gel has good viscoelasticity, thermal coagulability, emulsibility and film formability, and has high-strength binding capacity with the surface of an acidic aggregate under the action of acid-base neutralization.
Furfural reacts with polyvinyl imine to form Scheffl base and Mannich base, which are strongly complexed with metal salt on the surface of acidic aggregate to form metal complex with strong cohesive energy and good firmness, thus improving the binding force between asphalt and aggregate.
The amino-containing polymer is formed by a gluten powder triethanolamine mixture and a furfural polyethyleneimine mixture, and the anti-stripping agent prepared from the amino-containing polymer and plant asphalt can improve the wetting property of the asphalt on the surface of aggregate, reduce the interface energy, convert the whole system from a high-energy state to a low-energy state, form a stable system and improve the adhesion property between the asphalt and the aggregate.
On the basis of the technical scheme, the acid value of the plant asphalt is more than 50. The plant asphalt and the polybutadiene diol are easier to be subjected to esterification reaction under the performance.
Based on the technical scheme, the polybutadiene diol has the molecular weight of 1000-3000, the viscosity of 50-220mPa s, the iodine value of 330-400 and the functionality of 2-2.6.
On the basis of the technical scheme, the polybutadiene diol is selected from one of Polybd R15M, polybd CS-15, polybd CN-15 and R45HT of ARCO company or Nisso PB of Nissada corporation of Japan.
On the basis of the technical scheme, the catalyst is dibutyltin dilaurate, dioctyltin dilaurate, tetrabutyl titanate, isopropyl titanate, triethylaluminum, triisopropylaluminum or tetrabutylgermanium.
On the basis of the technical scheme, the protein content in the wheat gluten is more than 80 percent, the water content is less than or equal to 5 percent, the passing rate of a CB30 sieve with the fineness of more than or equal to 99.5 percent and the passing rate of a CB36 sieve with the fineness of more than or equal to 95 percent, and the dry basis water absorption rate is more than or equal to 160 percent. Under the performance, the protein content is high, and the protein gel can be better formed by polypeptide bonds and triethanolamine in the protein.
On the basis of the technical scheme, the furfural is industrial furfural, and the purity is more than 99%.
On the basis of the technical scheme, the molecular weight of the polyethyleneimine is 10000-20000, and the decomposition temperature is more than 270 ℃. The polyethyleneimine molecule under the condition has good high-temperature performance and is not easy to decompose in the synthesis process.
On the basis of the technical scheme, the triethanolamine is basf triethanolamine, the viscosity is 280mPa & s when the triethanolamine is tested at 35 ℃, and the bonding performance of the asphalt and the aggregate can be effectively improved.
On the basis of the technical scheme, the auxiliary agent comprises an anti-aging agent, an ultraviolet absorbent and a compatilizer.
On the basis of the technical scheme, the anti-aging agent is selected from p-phenylenediamine anti-aging agents, specifically, the anti-aging agent 4010, the anti-aging agent 4020, the anti-aging agent 4010NA or the anti-aging agent RD; the ultraviolet absorbent is ultraviolet absorbent UV531, ultraviolet absorbent UV-9 or o-methyl hydroxybenzoate; the compatibilizer is linoleamide, erucamide, or cocamide.
The invention provides a preparation method of an acidic aggregate bio-based asphalt anti-stripping agent, which comprises the following steps:
step one, adding plant asphalt, polybutadiene diol and a catalyst into a reaction kettle I, and stirring for 4-6h under the test conditions that the temperature is 150-160 ℃ and the rotating speed is 300-400rpm to obtain black viscous liquid I.
Step two, adding wheat gluten and triethanolamine into a reaction kettle II, stirring and heating to 80-90 ℃ under the condition that the rotating speed is 200-300 rpm; then, sequentially adding furfural and polyethyleneimine, and continuously stirring and reacting for 6-8h at the temperature of 40-50 ℃ under the protection of nitrogen to obtain a dark brown viscous liquid II.
Step three, adding the dark brown viscous liquid II obtained in the step two into the black viscous liquid I obtained in the step one, and stirring the mixture under the test conditions of room temperature and the rotating speed of 200-300rpm until the liquid is uniform; and then sequentially adding the anti-aging agent, the ultraviolet absorbent and the compatilizer, and stirring and reacting for 2-3h under the experimental conditions of room temperature and the rotation speed of 300-500rpm to obtain the final product, namely the acidic aggregate bio-based anti-stripping agent.
The technical scheme provided by the invention has the beneficial effects that:
the invention provides an acid aggregate bio-based asphalt anti-stripping agent, wherein the main raw material is plant asphalt which is natural, environment-friendly and wide in source; the wheat gluten reacts with triethanolamine to form a three-dimensional network structure, and has good viscoelasticity, extensibility, thermal coagulability, emulsibility and film formability. Furfural reacts with polyethyleneimine to form a crown structure with strong complexing ability, and strong complexing occurs between the furfural and the acidic aggregate, so that the bonding performance is improved; meanwhile, the asphalt anti-stripping agent can also reduce the interface energy between asphalt and aggregate to form a stable system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the contents in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It is to be understood that the various starting materials of the present invention are commercially available, unless otherwise specified.
Example 1
The invention provides an acidic aggregate bio-based asphalt anti-stripping agent, which is mainly prepared from the following raw materials: 70 parts of plant asphalt, 14 parts of polybutadiene diol, 0.05 part of dibutyltin dilaurate, 5 parts of vital gluten, 2 parts of furfural, 3 parts of polyethyleneimine, 3 parts of triethanolamine and 2.95 parts of an auxiliary agent.
Wherein the auxiliary agent comprises 4010 part of anti-aging agent, 0.95 part of ultraviolet absorbent UV531 and 1 part of linoleamide.
The invention provides a preparation method of an acidic aggregate bio-based asphalt anti-stripping agent, which comprises the following steps:
step one, 70 parts of plant asphalt, 14 parts of polybutadiene diol and 0.05 part of dibutyltin dilaurate are added into a reaction kettle I, and stirring is carried out for 4 hours under the test conditions that the temperature is 160 ℃ and the rotating speed is 300rpm, so as to obtain black viscous liquid I.
Step two, adding 5 parts of wheat gluten and 3 parts of triethanolamine into a reaction kettle II, stirring and heating to 90 ℃ under the condition that the rotating speed is 200 rpm; and then sequentially adding 2 parts of furfural and 3 parts of polyethyleneimine, and continuously stirring and reacting for 6 hours at the temperature of 50 ℃ under the protection of nitrogen to obtain a dark brown viscous liquid II.
Step three, adding the dark brown viscous liquid II obtained in the step two into the black viscous liquid I obtained in the step one, and stirring the mixture under the test conditions of room temperature and 200rpm until the liquid is uniform; and then sequentially adding 1 part of anti-aging agent 4010, 0.95 part of ultraviolet absorber UV531 and 1 part of linoleamide, and stirring and reacting for 2 hours at room temperature and 500rpm to obtain a final product, namely the acidic aggregate bio-based anti-stripping agent.
Example 2
The invention provides an acidic aggregate bio-based asphalt anti-stripping agent, which is mainly prepared from the following raw materials: 68 parts of plant asphalt, 12 parts of polybutadiene diol, 0.05 part of tetrabutyl titanate, 3 parts of vital gluten, 4 parts of furfural, 5 parts of polyethyleneimine, 5 parts of triethanolamine and 2.95 parts of an auxiliary agent.
Wherein the auxiliary agent comprises 1 part of anti-aging agent 4010NA, 0.95 part of ultraviolet absorbent UV531 and 1 part of linoleamide.
The invention provides a preparation method of an acidic aggregate bio-based asphalt anti-stripping agent, which comprises the following steps:
step one, adding 68 parts of plant asphalt, 12 parts of polybutadiene glycol and 0.05 part of tetrabutyl titanate into a reaction kettle I, and stirring for 4 hours under the test conditions that the temperature is 150 ℃ and the rotating speed is 350rpm to obtain black viscous liquid I.
Step two, adding 3 parts of wheat gluten and 5 parts of triethanolamine into a reaction kettle II, stirring and heating to 80 ℃ under the condition that the rotating speed is 300 rpm; and then sequentially adding 4 parts of furfural and 5 parts of polyethyleneimine, and continuously stirring and reacting for 7 hours at the temperature of 40 ℃ under the protection of nitrogen to obtain a dark brown viscous liquid II.
Step three, adding the dark brown viscous liquid II obtained in the step two into the black viscous liquid I obtained in the step one, and stirring the mixture under the test conditions of room temperature and the rotating speed of 300rpm until the liquid is uniform; and then sequentially adding 1 part of antioxidant 4010NA, 0.95 part of ultraviolet absorbent UV531 and 1 part of linoleamide, and stirring and reacting for 2.5 hours under the experimental conditions of room temperature and 400rpm of rotation speed to obtain a final product, namely the acidic aggregate bio-based anti-stripping agent.
Example 3
The invention provides an acidic aggregate bio-based asphalt anti-stripping agent, which is mainly prepared from the following raw materials: 72 parts of plant asphalt, 10 parts of polybutadiene glycol, 0.05 part of isopropyl titanate, 4 parts of wheat gluten, 3 parts of furfural, 4 parts of polyethyleneimine, 4 parts of triethanolamine and 2.95 parts of an auxiliary agent.
Wherein the auxiliary agent comprises 1 part of anti-aging agent RD, 0.95 part of ultraviolet absorbent UV-9 and 1 part of cocamide.
The invention provides a preparation method of an acidic aggregate bio-based asphalt anti-stripping agent, which comprises the following steps:
step one, adding 72 parts of plant asphalt, 10 parts of polybutadiene glycol and 0.05 part of isopropyl titanate into a reaction kettle I, and stirring for 6 hours under the test conditions that the temperature is 155 ℃ and the rotating speed is 400rpm to obtain black viscous liquid I.
Step two, adding 4 parts of wheat gluten and 4 parts of triethanolamine into a reaction kettle II, stirring and heating to 85 ℃ under the condition that the rotating speed is 250 rpm; and then sequentially adding 3 parts of furfural and 4 parts of polyethyleneimine, and continuously stirring and reacting for 8 hours at the temperature of 45 ℃ under the protection of nitrogen to obtain a dark brown viscous liquid II.
Step three, adding the dark brown viscous liquid II obtained in the step two into the black viscous liquid I obtained in the step one, and stirring the mixture under the test conditions of room temperature and the rotating speed of 250rpm until the liquid is uniform; and then sequentially adding 1 part of antioxidant RD, 0.95 part of ultraviolet absorbent UV-9 and 1 part of cocamide, and stirring and reacting for 3 hours at room temperature and 300rpm to obtain a final product, namely the acidic aggregate bio-based anti-stripping agent.
Example 4
The invention provides an acidic aggregate bio-based asphalt anti-stripping agent, which is mainly prepared from the following raw materials: 70 parts of plant asphalt, 10 parts of polybutadiene glycol, 0.05 part of tripropyl aluminum, 5 parts of wheat gluten, 2 parts of furfural, 5 parts of polyethyleneimine, 5 parts of triethanolamine and 2.95 parts of an auxiliary agent.
Wherein the auxiliary agent comprises anti-aging agent 4020 parts, o-hydroxybenzoic acid methyl ester 0.95 parts and erucamide 1 part.
The invention provides a preparation method of an acidic aggregate bio-based asphalt anti-stripping agent, which comprises the following steps:
step one, 70 parts of plant asphalt, 10 parts of polybutadiene glycol and 0.05 part of tripropyl aluminum are added into a reaction kettle I, and stirring is carried out for 6 hours under the test conditions that the temperature is 155 ℃ and the rotating speed is 400rpm, so as to obtain black viscous liquid I.
Step two, adding 5 parts of wheat gluten and 5 parts of triethanolamine into a reaction kettle II, and stirring and heating to 85 ℃ under the condition that the rotating speed is 250 rpm; and then sequentially adding 2 parts of furfural and 5 parts of polyethyleneimine, and continuously stirring and reacting for 8 hours at the temperature of 45 ℃ under the protection of nitrogen to obtain a dark brown viscous liquid II.
Step three, adding the dark brown viscous liquid II obtained in the step two into the black viscous liquid I obtained in the step one, and stirring the mixture under the test conditions of room temperature and the rotating speed of 250rpm until the liquid is uniform; and then sequentially adding 1 part of anti-aging agent 4020, 0.95 part of methyl ortho-hydroxybenzoate and 1 part of erucamide, and carrying out stirring reaction for 3 hours at room temperature and at the rotation speed of 300rpm to obtain the final product, namely the acidic aggregate bio-based anti-stripping agent.
Comparative example 1
The invention provides an acidic aggregate bio-based asphalt anti-stripping agent, which is mainly prepared from the following raw materials: 70 parts of plant asphalt, 14 parts of polybutadiene diol, 0.05 part of dibutyltin dilaurate, 5 parts of starch, 2 parts of furfural, 3 parts of polyethyleneimine, 3 parts of triethanolamine and 2.95 parts of an auxiliary agent.
Wherein the auxiliary agent comprises 4010 part of anti-aging agent, 0.95 part of ultraviolet absorbent UV531 and 1 part of linoleamide.
The invention provides a preparation method of an acidic aggregate bio-based asphalt anti-stripping agent, which comprises the following steps:
step one, adding 70 parts of plant asphalt, 14 parts of polybutadiene diol and 0.05 part of dibutyltin dilaurate into a reaction kettle I, and stirring for 4 hours under the test conditions that the temperature is 160 ℃ and the rotating speed is 300rpm to obtain a black viscous liquid I.
Step two, adding 5 parts of starch and 3 parts of triethanolamine into a reaction kettle II, stirring and heating to 90 ℃ under the condition that the rotating speed is 200 rpm; and then sequentially adding 2 parts of furfural and 3 parts of polyethyleneimine, and continuously stirring and reacting for 6 hours at the temperature of 50 ℃ under the protection of nitrogen to obtain a dark brown viscous liquid II.
Step three, adding the dark brown viscous liquid II obtained in the step two into the black viscous liquid I obtained in the step one, and stirring the mixture under the test conditions of room temperature and the rotating speed of 200rpm until the liquid is uniform; and then sequentially adding 1 part of anti-aging agent 4010, 0.95 part of ultraviolet absorber UV531 and 1 part of linoleamide, and stirring and reacting for 2 hours at room temperature and 500rpm to obtain a final product, namely the acidic aggregate bio-based anti-stripping agent.
Comparative example 2
The invention provides an acidic aggregate bio-based asphalt anti-stripping agent, which is mainly prepared from the following raw materials: 74 parts of plant asphalt, 8 parts of polybutadiene diol, 0.05 part of isopropyl titanate, 2 parts of wheat gluten, 5 parts of furfural, 2 parts of polyethyleneimine, 6 parts of triethanolamine and 2.95 parts of an auxiliary agent.
Wherein the auxiliary agent comprises anti-aging agent 4020 parts, o-hydroxybenzoic acid methyl ester 0.95 parts and erucamide 1 part.
The invention provides a preparation method of an acidic aggregate bio-based asphalt anti-stripping agent, which comprises the following steps:
step one, 70 parts of plant asphalt, 8 parts of polybutadiene glycol and 0.05 part of isopropyl titanate are added into a reaction kettle I, and stirring is carried out for 4 hours under the test conditions that the temperature is 160 ℃ and the rotating speed is 300rpm, so as to obtain black viscous liquid I.
Step two, adding 2 parts of wheat gluten and 6 parts of triethanolamine into a reaction kettle II, stirring and heating to 90 ℃ under the condition that the rotating speed is 200 rpm; and then sequentially adding 5 parts of furfural and 2 parts of polyethyleneimine, and continuously stirring and reacting for 6 hours at the temperature of 50 ℃ under the protection of nitrogen to obtain a dark brown viscous liquid II.
Step three, adding the dark brown viscous liquid II obtained in the step two into the black viscous liquid I obtained in the step one, and stirring the mixture under the test conditions of room temperature and the rotating speed of 200rpm until the liquid is uniform; and then sequentially adding 1 part of anti-aging agent 4020, 0.95 part of methyl ortho-hydroxybenzoate and 1 part of erucamide, and carrying out stirring reaction for 2 hours at room temperature and at the rotation speed of 500rpm to obtain the final product, namely the acidic aggregate bio-based anti-stripping agent.
Comparative example 3
This comparative example is a commercially available asphalt anti-stripping agent whose main component is an amine-based organic compound.
Experimental results and Performance analysis
1. According to the industry standard 'road engineering asphalt and asphalt mixture test regulation' (JTGE 20-2011), the adhesiveness of asphalt and stone is evaluated by a water boiling method. Granite stones with a particle size of 9.5-13.2 mm were washed, dried, then immersed in a preheated hot asphalt sample and extracted gently after 45s according to standard T0616-1993. The asphalt-coated aggregate particles were cooled at room temperature for 15min. The cooled aggregate particles were boiled in slightly boiling water for 3min. And observing the adhesion condition of the asphalt film on the surfaces of the aggregate particles, and evaluating the adhesion grade of the asphalt and the stone according to the movement condition and the stripping degree of the water on the surface of the stone, wherein the grade 1 is the lowest grade, and the grade 5 is the highest grade.
2. The asphalt stability test is carried out by molding a Marshall test piece by a standard compaction method according to the industry standard T0709-2011 to detect the stability and the residual stability.
3. The dynamic stability of the immersion ruts is tested according to the dynamic stability of a plate-shaped test piece which is rolled by a wheel rolling forming machine according to T0703-2011 and has the length of 300mm, the width of 300mm and the height of 50-100mm, an immersion experiment is carried out according to the standard T0709-2011, and a dynamic stability test is carried out according to a T0719-2011 method.
4. In a freeze-thaw splitting test (T0729-2011) of the asphalt mixture, asphalt and aggregate are mixed at a mixing temperature, cylindrical test pieces are manufactured according to T0702-2011, and a Marshall compaction instrument is adopted to compact the two surfaces 50 times respectively to manufacture two groups of test pieces (4 in each group). One set was unfrozen specimens, and cleavage tests were performed at 20 ℃. The second group is freeze-thaw test pieces, which are soaked in water at-18 ℃ for 16h, soaked at 60 ℃ for 24h and then subjected to cleavage test at 20 ℃. And (3) taking the test piece splitting strength ratio TSR before and after freeze thawing as a test index, and calculating the TSR according to a formula.
TSR＝100×T2/T1
T1-the splitting strength (MPa) of the test piece before the freeze-thaw test;
t2-the cleavage strength (MPa) of the test piece after the freeze-thaw test.
The asphalt anti-stripping agents obtained in examples 1 to 4 and comparative examples 1 to 3 were mixed with asphalt and aggregate to obtain mixes 1 to 7, respectively, and the test results obtained by the above test methods were as shown in table 1:
TABLE 1 asphalt mixture Performance test results
As shown in Table 1, according to the comparison of the test data of the mixtures 1-4 and the test data of the mixture 7, the stability of the anti-stripping agent provided by the invention can be improved by more than 90%, the freeze-thaw cleavage strength is improved by more than 50%, and the dynamic stability of the water-immersion rutting is improved by 300%; meanwhile, the adhesion grade is obviously improved, and the adhesion performance of asphalt and aggregate in the mixture can be improved.
According to the comparison of the data of the mixture 1-4 and the mixture 5, the vital gluten in the technical scheme of the invention is irreplaceable, and the excellent comprehensive performance of the anti-stripping agent can be realized only through the mutual synergistic cooperation of the vital gluten and other various components in the formula.
According to the comparison of data of the mixture 1-4 and the mixture 6, the optimal implementation interval of the components of the invention is 68-72 parts of plant asphalt, 10-14 parts of polybutadiene glycol, 0.05 part of dibutyltin dilaurate, 3-5 parts of wheat gluten, 2-4 parts of furfural, 3-5 parts of polyethyleneimine, 3-5 parts of triethanolamine and 2.95 parts of an auxiliary agent, wherein the embodiment 3 is the optimal embodiment.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (10)
1. The acidic aggregate bio-based asphalt anti-stripping agent is characterized by being mainly prepared from the following raw materials: 68-72 parts of plant asphalt, 10-14 parts of polybutadiene diol, 0.05 part of catalyst, 3-5 parts of wheat gluten, 2-4 parts of furfural, 3-5 parts of polyethyleneimine, 3-5 parts of triethanolamine and 2.95 parts of assistant.
2. An acidic aggregate bio-based asphalt anti-stripping agent according to claim 1, wherein said vegetable asphalt has an acid number greater than 50.
3. The acidic aggregate bio-based asphalt anti-stripping agent as claimed in claim 1, wherein the polybutadiene diol has a molecular weight of 1000-3000, a viscosity of 50-220 mPa-s, an iodine value of 330-400, and a functionality of 2-2.6.
4. The acidic aggregate bio-based asphalt anti-stripping agent as claimed in claim 3, wherein said polybutadiene diol is selected from Polybd R15M, polybd CS-15, polybd CN-15, R45HT of ARCO or Nisso PB of Nisso Kabushiki Kaisha.
5. The acidic aggregate bio-based asphalt anti-stripping agent as claimed in claim 1, wherein said catalyst is selected from dibutyltin dilaurate, dioctyltin dilaurate, tetrabutyl titanate, isopropyl titanate, triethylaluminum, triisopropylaluminum or tetrabutylgermanium.
6. The acidic aggregate bio-based asphalt anti-stripping agent as claimed in claim 1, wherein the protein content in the wheat gluten is greater than 80%, the water content is less than or equal to 5%, the CB30 sieve pass rate is greater than or equal to 99.5% and the CB36 sieve pass rate is greater than or equal to 95%.
7. An acidic aggregate bio-based asphalt anti-stripping agent according to claim 1, characterized in that said polyethyleneimine has a molecular weight of 10000-20000 and a decomposition temperature >270 ℃.
8. The acidic aggregate bio-based asphalt anti-stripping agent as claimed in claim 1, wherein said auxiliary agent comprises anti-aging agent, ultraviolet absorber and compatilizer.
9. The acidic aggregate bio-based asphalt anti-stripping agent as claimed in claim 8, wherein the anti-aging agent is anti-aging agent 4010, anti-aging agent 4020, anti-aging agent 4010NA or anti-aging agent RD; the ultraviolet absorbent is ultraviolet absorbent UV531, ultraviolet absorbent UV-9 or o-methyl hydroxybenzoate; the compatibilizer is linoleamide, erucamide, or cocamide.
10. A method for preparing an acidic aggregate bio-based asphalt anti-stripping agent according to claim 8 or 9, characterized by comprising the following steps:
step one, adding plant asphalt, polybutadiene diol and a catalyst into a reaction kettle I, and stirring for 4-6 hours under the test conditions that the temperature is 150-160 ℃ and the rotating speed is 300-400rpm to obtain black viscous liquid I;
secondly, adding wheat gluten and triethanolamine into a reaction kettle II, stirring and heating to 80-90 ℃ under the condition that the rotating speed is 200-300 rpm; then, sequentially adding furfural and polyethyleneimine, and continuously stirring and reacting for 6-8h at the temperature of 40-50 ℃ under the protection of nitrogen to obtain a dark brown viscous liquid II;
step three, adding the dark brown viscous liquid II obtained in the step two into the black viscous liquid I obtained in the step one, and stirring the mixture under the test conditions of room temperature and the rotating speed of 200-300rpm until the liquid is uniform; and then sequentially adding the anti-aging agent, the ultraviolet absorbent and the compatilizer, and stirring and reacting for 2-3h under the experimental conditions of room temperature and the rotation speed of 300-500rpm to obtain the final product, namely the acidic aggregate bio-based anti-stripping agent.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103804931A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Modified asphalt composition and preparation method thereof |
| CN104650601A (en) * | 2013-11-21 | 2015-05-27 | 交通运输部科学研究院 | Production formula for raising low temperature performance of crumb rubber asphalt |
| CN110016290A (en) * | 2019-03-15 | 2019-07-16 | 河北宇阳泽丽防水材料有限公司 | A kind of uncured rubber asphalt waterproof coating of room temperature quick-reaction type and its application |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103804931A (en) * | 2012-11-07 | 2014-05-21 | 中国石油化工股份有限公司 | Modified asphalt composition and preparation method thereof |
| CN104650601A (en) * | 2013-11-21 | 2015-05-27 | 交通运输部科学研究院 | Production formula for raising low temperature performance of crumb rubber asphalt |
| CN110016290A (en) * | 2019-03-15 | 2019-07-16 | 河北宇阳泽丽防水材料有限公司 | A kind of uncured rubber asphalt waterproof coating of room temperature quick-reaction type and its application |
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