CN104744954A - Anti-rut agent, composition for preparing anti-rut agent and preparation method of anti-rut agent - Google Patents
Anti-rut agent, composition for preparing anti-rut agent and preparation method of anti-rut agent Download PDFInfo
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Abstract
The invention provides an anti-rut agent, a composition for preparing the anti-rut agent and a preparation method of the anti-rut agent. The composition used for preparing the anti-rut agent comprises the following components in percent by weight: 40-60% of tetrahydrofuran insoluble substance for liquefying coal to obtain asphalt, 4-12% of petroleum asphalt, 18-40% of polyethylene and/or polypropylene and 5-10% of rubber powder. When the composition is used as a raw material for preparing the anti-rut agent, production cost of the anti-rut agent can be reduced, and the prepared anti-rut agent has high water stability, high temperature performance and low temperature performance are good, and other technical indexes can meet the requirements of Technical Specification for Construction of Highway Asphalt Pavements JTG F40-2004 issued by the Ministry of Transport of the People's Republic of China.
Description
Technical field
The present invention relates to building material field, in particular to a kind of anti-rut agent, the composition preparing it and its preparation method.
Background technology
At present, the rut problem of bituminous pavement is one of the Major Diseases on road surface, drastically influence road-ability and security.To the main solution of this problem be namely add anti-rut agent, to improve the high-temperature modulus of bituminous pavement, this solution is simple to operate, without the need to increasing extras, therefore the method obtains and applies more and more widely.But the price of current used anti-rut agent is higher, limits the application of the method to a certain extent.
In addition, the high-temperature behavior of general anti-rut agent is better, and low-temperature performance is poor, easily occurs crack like this when temperature is lower, and then causes its water stability, high-temperature behavior all poor, is unfavorable for applying of anti-rut agent.
Therefore, in order to increase the application of anti-rut agent at bituminous pavement, need badly a kind of cheapness and the composition of low-temperature performance and high-temperature behavior anti-rut agent all preferably.
Summary of the invention
Main purpose of the present invention is to provide a kind of anti-rut agent, prepare its composition and its preparation method, to solve the problem of the poor performance at low temperatures of anti-rut agent of the prior art.
To achieve these goals, according to an aspect of the present invention, provide a kind of composition for the preparation of anti-rut agent, by weight percentage, said composition comprises: the tetrahydrofuran insoluble of the gelatin liquefaction pitch of 40% ~ 60%; The petroleum pitch of 4% ~ 12%; The polyethylene of 18% ~ 40% and/or polypropylene; And the rubber powder of 5% ~ 10%.
Further, by weight percentage, above-mentioned composition comprises: the tetrahydrofuran insoluble of the gelatin liquefaction pitch of 55% ~ 60%; The petroleum pitch of 10% ~ 12%; The polyethylene of 18% ~ 27% and/or polypropylene; And the rubber powder of 8% ~ 10%.
Further, to be softening temperature reclaim waste polyethylene and/or polypropylene higher than the particulate state of 100 DEG C for above-mentioned polyethylene and/or above-mentioned polypropylene.
Further, the order number of above-mentioned rubber powder is between 30 ~ 80 orders.
Further, above-mentioned petroleum pitch is No. 70 pitches or No. 90 pitches.
According to a further aspect in the invention, provide a kind of anti-rut agent, this anti-rut agent is prepared from by above-mentioned composition.
According to a further aspect in the invention, provide a kind of preparation method of anti-rut agent, the method comprises: step S1, and above-mentioned composition is carried out mixed refining process, forms anti-rut agent.
Further, above-mentioned steps S1 comprises: step S11, above-mentioned composition is preheated to 80 ~ 110 DEG C, forms preheated mixture; And step S12, at the temperature of 115 ~ 245 DEG C, above-mentioned preheated mixture is carried out mixed refining process, form anti-rut agent.
Further, above-mentioned steps S12 also comprises after mixed refining process: above-mentioned anti-rut agent is extruded the process forming strip anti-rut agent; And the process of granular anti-rut agent will be cut into after above-mentioned strip anti-rut agent cooling.
Further, above-mentioned steps S12 adopts screw extrusion press carry out above-mentioned mixed refining process and above-mentionedly to extrude, and the rotating speed of preferred above-mentioned screw extrusion press is at 30 ~ 60r/min.
Further, above-mentioned preparation method also comprises the step utilizing soxhlet type to prepare the tetrahydrofuran insoluble of gelatin liquefaction pitch.
Applying composition of the present invention is that the dynamic stability of the sign high-temperature behavior of the anti-rut agent that raw material is made is higher, water stability is also higher, the maximum flexural-tensile strain characterizing low-temperature performance is comparatively large, and other technologies index all can meet the requirement of the Ministry of Communications ministerial standard JTGF40-2004 " standard specification for construction and acceptance of highway asphalt pavement "; And the composition of the application, not only the tetrahydrofuran insoluble in coal liquefaction residue is recycled, turn waste into wealth, avoid the waste of resource, the cost producing anti-rut agent can also be reduced.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.The present invention is described in detail below with reference to embodiment.
As understood by those skilled in the art, the rubber powder of the application refers to the Powdered elastomeric material that waste rubber goods obtains through grinding and processing process.
In a kind of exemplary embodiment of the application, provide a kind of composition, count by weight percentage, said composition comprises: the tetrahydrofuran insoluble of the gelatin liquefaction pitch of 40% ~ 60%; The petroleum pitch of 4% ~ 12%; The polyethylene of 18% ~ 40% and/or polypropylene; And the rubber powder of 5% ~ 10%.
This prepares tetrahydrofuran insoluble in the composition of anti-rut agent from coal liquefaction residue, achieve the object turned waste into wealth, and its softening temperature is greater than 180 DEG C, effectively can improves the anti-rut behavior of compound, general anti-rut agent can improve the high-temperature behavior of compound, but the low-temperature performance of have ignored, easily there is crack when temperature is lower, once there be moisture to enter, then affect its water stability, after water stability declines, peeling off appears in pitch and the adhesion of gathering materials, so when temperature is higher, its anti-rut behavior also can decline thereupon, and the combination species that the application prepares anti-rut agent add rubber powder, it can when improving compound high-temperature behavior, take into account its low-temperature performance simultaneously, improve the maximum flexural-tensile strain of anti-rut agent when low temperature, it is made not easily to occur crack when low temperature, overcome the defect of the anti-rut agent poor performance at low temperatures prepared in prior art, and this rubber powder is obtained through grinding and processing process by waste rubber goods, also the production cost controlling anti-rut agent is conducive to, petroleum pitch in composition serves the effect of binding agent, each component is bonded together, polyethylene and/or polypropylene molecule amount greatly, have good thermotolerance and winter hardiness, and chemical stability are good, are also had very high rigidity and tensile strength, due to the character of its uniqueness, can play the effect of embedded squeezing and reinforcement in compound.
It can thus be appreciated that, use said composition for raw material prepare anti-rut agent time, not only the tetrahydrofuran insoluble in coal liquefaction residue is recycled, turn waste into wealth, avoid the waste of resource, low-temperature performance and the high-temperature behavior that can also reduce the cost producing anti-rut agent and the anti-rut agent made are all better, and water stability is also higher, and other technologies index all can meet the requirement of the Ministry of Communications ministerial standard JTG F40-2004 " standard specification for construction and acceptance of highway asphalt pavement ".
In order to improve the performance of anti-rut agent further, comprise the performances such as its high-temperature behavior, low-temperature performance and water stability, preferably by weight percentage, above-mentioned composition comprises: the tetrahydrofuran insoluble of the gelatin liquefaction pitch of 55% ~ 60%; The petroleum pitch of 10% ~ 12%; The polyethylene of 18% ~ 27% and/or polypropylene; And the rubber powder of 8% ~ 10%.
In a kind of preferred embodiment of the application, to be softening temperature reclaim waste polyethylene and/or polypropylene higher than the particulate state of 100 DEG C for above-mentioned polyethylene and/or above-mentioned polypropylene.Such polyethylene and polypropylene can reduce the cost producing anti-rut agent on the one hand; On the other hand, the component that softening temperature is higher is more conducive to improving the high temperature stability of anti-rut agent, therefore adopts softening temperature can improve the high-temperature behavior of anti-rut agent further higher than the polyethylene of 100 DEG C and polypropylene.
Present techniques personnel find, rubber powder order number is larger, improve more remarkable to the low-temperature performance of pitch, can the tooling cost of corresponding increase rubber powder but increase rubber powder order number, in order to improve the low-temperature performance of the anti-rut agent obtained by above-mentioned composition, and take into account the factor of low cost, the order number of preferred above-mentioned rubber powder is between 30 ~ 80 orders.
In another preferred embodiment of the application, above-mentioned petroleum pitch is No. 70 pitches or No. 90 pitches.Such petroleum pitch can each component better in binding compositions, be more conducive to anti-rut agent produce in the technique such as extrusion.
In the another kind of exemplary embodiment of the application, provide a kind of anti-rut agent, this anti-rut agent is prepared from by above-mentioned composition.
Above-mentioned anti-rut agent is prepared from through processing by above-mentioned composition, and on the one hand, the production cost of this anti-rut agent is lower, is more conducive to the widespread use of anti-rut agent; In addition on the one hand, the high-temperature behavior of this anti-rut agent is better, low-temperature performance better, water stability is also higher, further, the other technologies index of this anti-rut agent all can meet the requirement of the Ministry of Communications ministerial standard JTGF40-2004 " standard specification for construction and acceptance of highway asphalt pavement ".
In another exemplary embodiment of the application, provide a kind of preparation method of anti-rut agent, above-mentioned composition is carried out mixed refining process by the method, forms anti-rut agent.
Above-mentioned preparation method's technique is simple, easy to operate, equipment requirements is low, be conducive to the production efficiency improving anti-rut agent, and then be conducive to its widespread use at bituminous concrete pavement, on the other hand, the method adopts above-mentioned composition to be raw material, the better performances of the anti-rut agent prepared, high-temperature behavior is better, and low-temperature performance is better, and water stability is also higher.
In another exemplary embodiment of the application, preferred above-mentioned steps S1 comprises: step S11, above-mentioned composition is preheated to 80 ~ 110 DEG C, forms preheated mixture; And step S12, at the temperature of 115 ~ 245 DEG C, above-mentioned preheated mixture is carried out mixed refining process, form anti-rut agent.The object of preheating is to can better mix each component, if directly carry out mixed refining process, easily occur mixing uneven problem, preheat temperature range 80 ~ 110 DEG C can make pitch have certain mobility, other components can be softened simultaneously, contribute to the mixing of each component; Melting temperature scope is 115 ~ 245 DEG C time, and melting temperature is higher, and the mixing of each component is better, due to polyethylene and polyacrylic softening temperature higher, when polyethylene and/or polypropylene content more time, composition softening temperature is higher, should adopt higher temperature.
The conveniently application of anti-rut agent, makes anti-rut agent be more widely used in bituminous concrete pavement, and preferred above-mentioned steps S12 also comprises after mixed refining process: above-mentioned anti-rut agent is extruded the process forming strip anti-rut agent; And the process of granular anti-rut agent will be cut into after above-mentioned strip anti-rut agent cooling.
In another preferred embodiment of the application, above-mentioned steps S12 adopts screw extrusion press carry out above-mentioned mixed refining process and above-mentionedly to extrude.Adopt screw extrusion press to carry out the preparation of anti-rut agent, the production efficiency of anti-rut agent can be improved.
In order to make composition evenly and carry out mixed refining process fully, the strip anti-rut agent extruded is more even, and the rotating speed of above-mentioned screw extrusion press is at 30 ~ 60r/min.
In the another kind of preferred embodiment of the application, above-mentioned preparation method also comprises the step utilizing soxhlet type to prepare the tetrahydrofuran insoluble of gelatin liquefaction pitch.Utilize soxhlet type to be a kind of method that the tetrahydrofuran insoluble of gelatin liquefaction pitch is prepared in more ripe extracting, further can improve the efficiency of the tetrahydrofuran insoluble of preparation gelatin liquefaction pitch, and then improve the efficiency preparing anti-rut agent.
In order to the technical scheme enabling those skilled in the art clearly understand the application, below with reference to embodiment to the application utilize the composition of anti-rut agent to prepare the method for anti-rut agent and prepared anti-rut agent is described in detail.
Embodiment 1
Gelatin liquefaction asphaltic residue 450g, petroleum pitch 120g, waste polyethylene 350g and shoddy 80g is comprised in the composition of preparation 1000g anti-rut agent.In concrete composition the parameter of each composition and weight ratio as shown in table 1.
First by each component 100 DEG C of preheatings, be then added in screw extrusion press, 180 DEG C carry out mixing, extrude slivering, then by room temperature water-cooled, re-use the anti-rut agent particle that tablets press cuts into about 3mm.Preheating temperature and mixing temperature as shown in table 2.
The anti-rut agent prepared is added in bituminous concrete with the ratio of 0.3wt% and carries out Rut resistance experiment, 60 DEG C, under the condition of wheel load 0.7 ± 0.05Mpa, adopt rut experimental technique to test the dynamic stability characterizing its high-temperature behavior; 25 DEG C, under the condition of loading rate 50mm/min, adopt freeze-thaw split experimental technique to test the Tensile Strength Ratio characterizing water stabilizing;-10 DEG C, under the condition of loading rate 50mm/min, adopt compound low-temperature bending experimental technique to test the maximum flexural-tensile strain characterizing low-temperature performance.Test result is in table 3.
Embodiment 2
Gelatin liquefaction asphaltic residue 400g, petroleum pitch 100g, waste polyethylene 400g, shoddy 100g is comprised in the composition of preparation 1000g anti-rut agent.In concrete composition the performance perameter of each composition and weight ratio as shown in table 1.
First by composition 100 DEG C of preheatings, be then added in screw extrusion press, 190 DEG C carry out mixing, extrude slivering, then by room temperature water-cooled, re-use the anti-rut agent particle that tablets press cuts into about 3mm.Preheating temperature and mixing temperature as shown in table 2.
The anti-rut agent prepared is added in bituminous concrete with the ratio of 0.3wt% and carries out Rut resistance experiment, 60 DEG C, under the condition of wheel load 0.7 ± 0.05Mpa, adopt rut experimental technique to test the dynamic stability characterizing its high-temperature behavior; 25 DEG C, under the condition of loading rate 50mm/min, adopt freeze-thaw split experimental technique to test the Tensile Strength Ratio characterizing water stabilizing;-10 DEG C, under the condition of loading rate 50mm/min, adopt compound low-temperature bending experimental technique to test the maximum flexural-tensile strain characterizing low-temperature performance.Test result is in table 3.
Embodiment 3
Gelatin liquefaction asphaltic residue 500g, petroleum pitch 100g, waste and old polypropylene 320g, shoddy 80g is comprised in the composition of preparation 1000g anti-rut agent.In concrete composition the performance perameter of each composition and weight ratio as shown in table 1.
First by each component 100 DEG C of preheatings, be then added in screw extrusion press, 195 DEG C carry out mixing, extrude slivering, then by room temperature water-cooled, re-use the anti-rut agent particle that tablets press cuts into about 3mm.Preheating temperature and mixing temperature as shown in table 2.
The anti-rut agent prepared is added in bituminous concrete with the ratio of 0.3wt% and carries out Rut resistance experiment, 60 DEG C, under the condition of wheel load 0.7 ± 0.05Mpa, adopt rut experimental technique to test the dynamic stability characterizing its high-temperature behavior; 25 DEG C, under the condition of loading rate 50mm/min, adopt freeze-thaw split experimental technique to test the Tensile Strength Ratio characterizing water stabilizing;-10 DEG C, under the condition of loading rate 50mm/min, adopt compound low-temperature bending experimental technique to test the maximum flexural-tensile strain characterizing low-temperature performance.Test result is in table 3.
Embodiment 4
Gelatin liquefaction asphaltic residue 550g, petroleum pitch 120g, waste and old polypropylene 230g and shoddy 100g is included in the composition of preparation 1000g anti-rut agent.In concrete composition the performance perameter of each composition and weight ratio as shown in table 1.
First by each component 100 DEG C of preheatings, be then added in screw extrusion press, 200 DEG C carry out mixing, extrude slivering, then by room temperature water-cooled, re-use the anti-rut agent particle that tablets press cuts into about 3mm.Preheating temperature and mixing temperature as shown in table 2.
The anti-rut agent prepared is added in bituminous concrete with the ratio of 0.3wt% and carries out Rut resistance experiment, 60 DEG C, under the condition of wheel load 0.7 ± 0.05Mpa, adopt rut experimental technique to test the dynamic stability characterizing its high-temperature behavior; 25 DEG C, under the condition of loading rate 50mm/min, adopt freeze-thaw split experimental technique to test the Tensile Strength Ratio characterizing water stabilizing;-10 DEG C, under the condition of loading rate 50mm/min, adopt compound low-temperature bending experimental technique to test the maximum flexural-tensile strain characterizing low-temperature performance.Test result is in table 3.
Embodiment 5
In concrete composition, the performance perameter weight ratio of each composition is shown in Table 1, and adopts method same as the previously described embodiments to process composition, makes anti-rut agent, and the preheating temperature and the mixing temperature that add man-hour are as shown in table 2.
The anti-rut agent prepared is added in bituminous concrete with the ratio of 0.3wt% and carries out Rut resistance experiment, 60 DEG C, under the condition of wheel load 0.7 ± 0.05Mpa, adopt rut experimental technique to test the dynamic stability characterizing its high-temperature behavior; 25 DEG C, under the condition of loading rate 50mm/min, adopt freeze-thaw split experimental technique to test the Tensile Strength Ratio characterizing water stabilizing;-10 DEG C, under the condition of loading rate 50mm/min, adopt compound low-temperature bending experimental technique to test the maximum flexural-tensile strain characterizing low-temperature performance.Test result is in table 3.
Embodiment 6
In concrete composition, the performance perameter weight ratio of each composition is shown in Table 1, adopt and prepare anti-rut agent with the method that above-described embodiment is identical, the preheating temperature and the mixing temperature that add man-hour are as shown in table 2, adopt the compatible mode of above-described embodiment to test the anti-rut agent prepared, test result is in table 3.
Embodiment 7
In concrete composition, the performance perameter weight ratio of each composition is shown in Table 1, adopt and prepare anti-rut agent with the method that above-described embodiment is identical, the preheating temperature and the mixing temperature that add man-hour are as shown in table 2, adopt the compatible mode of above-described embodiment to test the anti-rut agent prepared, test result is in table 3.
Embodiment 8
In concrete composition, the performance perameter weight ratio of each composition is shown in Table 1, adopt and prepare anti-rut agent with the method that above-described embodiment is identical, the preheating temperature and the mixing temperature that add man-hour are as shown in table 2, adopt the compatible mode of above-described embodiment to test the anti-rut agent prepared, test result is in table 3.
Embodiment 9
In concrete composition, the performance perameter weight ratio of each composition is shown in Table 1, adopt and prepare anti-rut agent with the method that above-described embodiment is identical, the preheating temperature and the mixing temperature that add man-hour are as shown in table 2, adopt the compatible mode of above-described embodiment to test the anti-rut agent prepared, test result is in table 3.
Embodiment 10
In concrete composition, the performance perameter weight ratio of each composition is shown in Table 1, adopt and prepare anti-rut agent with the method that above-described embodiment is identical, the preheating temperature and the mixing temperature that add man-hour are as shown in table 2, adopt the compatible mode of above-described embodiment to test the anti-rut agent prepared, test result is in table 3.
Embodiment 11
In concrete composition, the performance perameter weight ratio of each composition is shown in Table 1, adopt and prepare anti-rut agent with the method that above-described embodiment is identical, the preheating temperature and the mixing temperature that add man-hour enter shown in table 2, adopt the compatible mode of above-described embodiment to test the anti-rut agent prepared, test result is in table 3.
Comparison example 1
In concrete composition, the performance perameter weight ratio of each composition is shown in Table 1, adopt and prepare anti-rut agent with the method that above-described embodiment is identical, the preheating temperature and the mixing temperature that add man-hour are as shown in table 2, adopt the compatible mode of above-described embodiment to test the anti-rut agent prepared, test result is in table 3.
Table 1
Table 2
| Preheating temperature (DEG C) | Melting temperature (DEG C) | |
| Embodiment 1 | 100 | 180 |
| Embodiment 2 | 100 | 190 |
| Embodiment 3 | 100 | 195 |
| Embodiment 4 | 100 | 200 |
| Embodiment 5 | 80 | 115 |
| Embodiment 6 | 110 | 245 |
| Embodiment 7 | 100 | 200 |
| Embodiment 8 | 100 | 200 |
| Embodiment 9 | 100 | 200 |
| Embodiment 10 | 100 | 260 |
| Embodiment 11 | 120 | 200 |
| Comparative example 1 | 100 | 200 |
Table 3
From the test result of above-mentioned table 3, when the tetrahydrofuran insoluble weight ratio of the gelatin liquefaction pitch in composition is between 40wt% ~ 60wt%, the weight ratio of petroleum pitch is between 4wt% ~ 12wt%, polyethylene and/or polyacrylic weight ratio are between 18wt% ~ 40wt%, the weight ratio of rubber powder is between 5% ~ 10%, polyethylene and/or described polypropylene are that softening temperature is higher than 100 DEG C, the order number of rubber powder is between 30 ~ 80 orders, petroleum pitch be No. 70 pitches or No. 90 pitch time, the better performances of the anti-rut agent prepared, characterize the dynamic stability of high-temperature behavior between 5389 ~ 5958 times/mm, water stability is between 84% ~ 91%, characterize the maximum flexural-tensile strain of low-temperature performance between 2210 ~ 2314 μ ε, and the cost preparing anti-rut agent have dropped 8 ~ 12 yuan/m
3, preheating temperature when preparing anti-rut agent is between 84 ~ 110 DEG C, when melting temperature is between 115 ~ 245 DEG C, the better performances of the anti-rut agent prepared, characterize the dynamic stability of high-temperature behavior between 5389 ~ 5958 times/mm, water stability is between 84% ~ 91%, characterize the maximum flexural-tensile strain of low-temperature performance between 2206 ~ 2314 μ ε, and the cost preparing anti-rut agent have dropped 8 ~ 12 yuan/m
3.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
1) the above-mentioned composition of the application is the raw material making anti-rut agent, on the one hand, tetrahydrofuran insoluble in this raw material is from coal liquefaction residue, rubber powder also obtains through grinding and processing process from waste rubber goods, not only turn waste into wealth, and reduce the cost producing anti-rut agent; On the other hand, the low-temperature performance of the anti-rut agent be made up of said composition is better, high-temperature behavior is better, and water stability is also higher, and other technologies index all can meet the requirement of the Ministry of Communications ministerial standard JTGF40-2004 " standard specification for construction and acceptance of highway asphalt pavement ".
2) preparation method's technique of the application is simple, easy to operate, equipment requirements is low, be conducive to the production efficiency improving anti-rut agent, and then be conducive to its widespread use at bituminous concrete pavement, on the other hand, the method adopts above-mentioned composition to be raw material, the better performances of the anti-rut agent prepared, low-temperature performance is better, and high-temperature behavior is better, and water stability is also higher.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. for the preparation of a composition for anti-rut agent, it is characterized in that, by weight percentage, described composition comprises:
The tetrahydrofuran insoluble of the gelatin liquefaction pitch of 40% ~ 60%;
The petroleum pitch of 4% ~ 12%;
The polyethylene of 18% ~ 40% and/or polypropylene; And
The rubber powder of 5% ~ 10%.
2. composition according to claim 1, is characterized in that, by weight percentage, described composition comprises:
The tetrahydrofuran insoluble of the gelatin liquefaction pitch of 55% ~ 60%;
The petroleum pitch of 10% ~ 12%;
The polyethylene of 18% ~ 27% and/or polypropylene; And
The rubber powder of 8% ~ 10%.
3. composition according to claim 1 and 2, is characterized in that, to be softening temperature reclaim waste polyethylene and/or polypropylene higher than the particulate state of 100 DEG C for described polyethylene and/or described polypropylene.
4. composition according to claim 1 and 2, is characterized in that, the order number of described rubber powder is between 30 ~ 80 orders.
5. composition according to claim 1 and 2, is characterized in that, described petroleum pitch is No. 70 pitches or No. 90 pitches.
6. an anti-rut agent, is characterized in that, described anti-rut agent composition according to any one of claim 1 to 5 is prepared from.
7. a preparation method for anti-rut agent, is characterized in that, comprising:
Step S1, carries out mixed refining process by the composition according to any one of claim 1 to 5, forms anti-rut agent.
8. preparation method according to claim 7, is characterized in that, described step S1 comprises:
Step S11, is preheated to 80 ~ 110 DEG C by described composition, forms preheated mixture; And
Step S12, carries out mixed refining process by described preheated mixture at the temperature of 115 ~ 245 DEG C, forms anti-rut agent.
9. preparation method according to claim 8, is characterized in that, described step S12 also comprises after mixed refining process:
Described anti-rut agent is extruded the process forming strip anti-rut agent; And
The process of granular anti-rut agent will be cut into after described strip anti-rut agent cooling.
10. preparation method according to claim 9, is characterized in that, described step S12 adopts screw extrusion press carry out described mixed refining process and describedly to extrude, and the rotating speed of preferred described screw extrusion press is at 30 ~ 60r/min.
11. preparation methods according to claim 7, is characterized in that, described preparation method also comprises the step utilizing soxhlet type to prepare the tetrahydrofuran insoluble of gelatin liquefaction pitch.
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| CN109266024A (en) * | 2017-07-18 | 2019-01-25 | 大连韵海贸易有限公司 | A kind of bituminous pavement high-modulus rut agent |
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