CN110845763B - SBR-containing petroleum asphalt with high heat storage stability, anti-aging agent and preparation method thereof - Google Patents
SBR-containing petroleum asphalt with high heat storage stability, anti-aging agent and preparation method thereof Download PDFInfo
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Abstract
The invention relates to a petroleum asphalt with high heat storage stability and containing SBR and an anti-aging agent and a preparation method thereof, wherein the anti-aging agent is mainly prepared from 20-80 parts of petroleum soft components, 30-10 parts of quaternary ammonium base and 50-10 parts of active carbon. The anti-aging agent disclosed by the invention has the beneficial effects that the anti-aging agent can still meet the asphalt standard after being stored for 40 days, and an unexpected technical effect is achieved.
Description
Technical Field
The invention belongs to the field of petroleum asphalt, and particularly relates to petroleum asphalt containing SBR with high thermal storage stability, an anti-aging agent and a preparation method thereof.
Background
The production method of road petroleum asphalt mainly includes reduced pressure distillation method, shallow oxidation method and blending method. In most cases, proper crude oil is selected and subjected to atmospheric and vacuum distillation to obtain vacuum residue which is directly used as road asphalt, sometimes the vacuum residue with insufficient hardness can be used for producing the road asphalt through shallow oxidation, and the vacuum residue and solvent deasphalted deoiled asphalt can be used as main components to blend other fractions for production. The quality of the road asphalt is seriously dependent on the property of crude oil, most of domestic crude oil is not suitable for directly producing the road asphalt by using a reduced pressure distillation method, and most of domestic road asphalt is produced by using imported crude oil by reduced pressure distillation. In order to improve the yield of the asphalt and meet the domestic market demand. The proper components are often blended to produce the asphalt, and in order to make up for the insufficient elongation of the blended asphalt, Styrene Butadiene Rubber (SBR) is mostly blended to reach the product standard of the road petroleum asphalt. In addition, SBR modified asphalt is also frequently used for paving in alpine regions. Petroleum asphalt containing SBR has a problem that the asphalt after a certain period of thermal storage is not qualified due to deterioration of SBR during high-temperature storage, which causes deterioration of elongation, particularly, the elongation of asphalt after a thin-film oven. At present, some manufacturers store and transport produced asphalt containing SBR at normal temperature, and SBR modified asphalt is mostly produced by the method, so that inconvenience is brought to users in use; or the produced asphalt is reheated when the produced asphalt needs to be transported outside in the cold storage of the tank area, so that the passive effect is brought to the production, and the transportation radius is also limited; some manufacturers adopt the existing production method, namely, the tank area heat storage raw material asphalt is added with SBR when the market needs, and the method limits the transportation radius. These methods are not suitable for mass production and cause an increase in energy consumption. The aging of asphalt refers to three aspects, namely the aging of asphalt products during heat storage, the short-term aging of asphalt and stone mixing, paving and compacting and the like during construction, and the long-term aging of pavements at natural environmental temperature during use. The invention mainly solves the problem of thermal aging caused by thermal degradation of SBR in the asphalt thermal storage process. Due to degradation of SBR, the asphalt softening point is increased, the penetration degree and the viscosity and ductility are changed, but the ductility is reduced most obviously after a film oven is used, and the invention aims to solve the problem that the ductility of the SBR-containing asphalt after heat storage is unqualified after The Film Oven (TFOT). Many patents describe the anti-aging method of petroleum asphalt, such as CN102181162A, CN104140580A, and CN108410191A, which disclose that aluminum magnesium base layered double hydroxides and their modified products are used as anti-aging agents, mainly to prevent the aging of road petroleum asphalt, SBR modified asphalt and SBS modified asphalt under ultraviolet light, and to solve the aging problem of natural environment in the road surface using process, which can not improve the thermal storage stability; CN103408957A discloses a composite asphalt anti-aging agent which is composed of montmorillonite, an antioxidant and a light stabilizer compound, an anti-aging agent, an antioxidant and a light shielding agent carbon black are mentioned in CN101307156A, and CN102504552A discloses an anti-aging agent which is composed of a free radical trapping agent, a peroxide decomposer, a light stabilizer, a metal ion complexing agent and a basic soft component, and can solve the problems of heat resistance stability and light stability of road asphalt, mainly solve the short-term thermal oxidation problem in the process of mixing, paving and compacting common petroleum asphalt and stone, and the long-term ultraviolet light oxidation problem in the process of using a road surface. Montmorillonite, aluminum-magnesium-based layered double hydroxide and the like all utilize the property of absorbing ultraviolet light, have the defects of excessively large addition amount, obvious change of indexes such as penetration degree, softening point and the like of asphalt, no improvement of the property of the ductility of a film oven after heat storage and the like, and even direct reduction of the original ductility of the asphalt. The asphalt is heated for a longer time than that of mixing, paving and compacting, and is heated for a long time, the temperature of the pavement in the using process is far lower than that of the pavement, and the ageing problem in the thermal storage process of the asphalt containing SBR is mainly caused by thermal ageing of SBR in an asphalt atmosphere and does not contact ultraviolet light, so that the anti-ageing agents mentioned in the patents are not suitable for use. CN106147254A discloses an organic boride stabilizer for rubber powder-containing and polymer (containing SBR) modified asphalt, which has the property of improving heat storage, but because the principle is to interact with carbon black in waste tire rubber powder, the SBR-containing asphalt does not contain carbon powder and is not suitable for use. CN105585856A discloses a thermal storage stabilizer for waste tire crumb rubber modified asphalt containing SBR, wherein the thermal storage stability refers to the problem of segregation between waste tire crumb rubber and asphalt caused by density difference and poor solubility, and is not suitable for the problem of aging caused by heating when the asphalt containing SBR is stored thermally; CN101457023A discloses a method for producing polymer modified asphalt by one-step method, which uses peroxide, metal oxide and acid as stabilizer to be extruded with peptizing agent and polymer and then dissolved in base asphalt, mainly solving the problem of complex production process of SBS and SBR modified asphalt, wherein the thermal storage stability mainly means the problem of polymer and asphalt layering, namely segregation in the thermal storage process, and the reactive stabilizer is not beneficial to improving the asphalt extension degree by SBR; CN101418129A discloses that urea can improve the heat storage stability of SBR-containing asphalt, the effect can reach ten days of storage period, but the urea has pungent smell, has environmental protection problem and influences the use; CN102051058B discloses that the heat storage property of SBR-containing asphalt can be improved by a mixture of urea and maleic anhydride, the effect of the mixture can meet the storage period of the SBR-containing asphalt for ten days, but the urea has larger pungent smell, and the maleic anhydride also has obvious peculiar smell; the addition of urea can change other indexes such as penetration degree, softening point and the like of the matrix asphalt, possibly cause unqualified asphalt and influence the application range of the asphalt; and the ten-day storage period cannot completely meet the requirement of thermal storage of the asphalt in the factory. CN103804931B discloses a method for improving the heat storage period of SBR-containing petroleum asphalt by using monoethanolamine, diethanolamine and triethanolamine, wherein the ethanolamine still has strong amine pungent odor and toxicity, and almost cannot be practically applied due to environmental protection, and in addition, the flash point is low and the viscosity is low, so that the penetration degree and the flash point of the asphalt can be influenced when the ethanolamine is added into the asphalt, which can also lead the ethanolamine, diethanolamine and triethanolamine to be difficult to practically apply; several kinds of anti-aging agents for SBR-containing asphalt are introduced in the text of screening and evaluating anti-aging agents for Tahe asphalt in 10 months 2008 of petroleum asphalt, wherein three effects of sodium hydroxide, tallow based trimethylene diamine and ACNA are poor, the asphalt is unqualified after being stored for 10 days, and the addition mode of the sodium hydroxide and the asphalt has the problem of compatibility, so that the addition mode is troublesome. Only PNS has performance up to ten days of storage. However, PNS has pungent odor, petroA has the problem of excessive usage, which affects other indexes of asphalt, and the storage period is only examined for six days, and the after-extension length of a film oven (TFOT) is close to the unqualified length. The polyphosphoric acid reported in many documents improves the storage stability of asphalt, and the principle is only for petroleum asphalt, but does not play a role in thermal aging of SBR, and even plays a destructive role. In the fourth phase of 2000 of the journal of "petroleum asphalt", page 35-41, "the research on the improvement of the aging resistance of petroleum asphalt" mentioned in Japan, about 150 known antioxidants and anti-aging agents for petroleum, rubber and food have no antioxidant and anti-aging effect on petroleum asphalt after years of research by various experts of petroleum asphalt.
Disclosure of Invention
The invention is not specially directed to the problem of short-term aging of asphalt in the mixing and paving process, i.e. the problem of penetration ratio of asphalt index, which is solved by most of the above patents, and the problem of long-term aging of pavement caused by ultraviolet light in the using process of pavement, but the invention is directed to the problem of thermal aging of asphalt containing SBR in the tank area thermal storage and thermal transportation process after production. Finished asphalt produced by a large asphalt production plant usually needs to be stored for a long time in a tank field, the asphalt production is subject to the continuous production process of the whole petroleum processing plant, and multiple sections such as production, marketing, application and the like also inevitably require that the finished asphalt has a long thermal storage period. Ordinary petroleum asphalt does not age very significantly during thermal storage in the tank farm and thermal transport of the tanker trucks. However, the SBR containing bitumen undergoes significant aging during thermal storage due to degradation of the SBR, manifested by an increase in softening point, a decrease in penetration, elongation and a decrease in post-film oven (TFOT) ductility. The softening point is increased and the penetration is reduced, so that the range can be acceptable under most conditions, and the product is not unqualified generally; the extension degree can not influence the product index under the condition of surplus. However, the reduction in the elongation after The Film Oven (TFOT) is very significant, and often falls below the product standard after more than three days of thermal storage. The invention aims to solve the problem that the extension length of the SBR-containing asphalt after thermal storage is unqualified after a film oven is used.
The invention firstly provides an anti-aging agent for preparing petroleum asphalt containing SBR with high heat storage stability, which comprises the following components in parts by weight:
petroleum soft component 20-80 quaternary ammonium base 30-10 active carbon 50-10;
the quaternary ammonium base comprises a quaternary ammonium base compound shown as a formula I, an optical isomer, a solvate or a pharmaceutically acceptable salt thereof:
in the formula R1、R2、R3Or R4Each independently selected from aliphatic or aromatic hydrocarbon groups, preferably alkyl groups.
The invention uses active carbon, quaternary ammonium base and petroleum soft components as raw materials to prepare the anti-aging agent, the anti-aging agent is added into the asphalt containing SBR to inhibit the aging of the asphalt containing SBR in the heat storage process, and the problem that the ductility of the asphalt after a film oven is subjected to heat storage is not up to standard is mainly solved, particularly the ductility of the asphalt after the film oven is subjected to heat storage for 40 days is still qualified.
Further, the anti-aging agent comprises the following components in parts by weight:
petroleum soft component 50 quaternary ammonium base 30-20 active carbon 20-30.
Further, the quaternary ammonium hydroxide of the present invention includes one or more of quaternary ammonium hydroxides belonging to alkyl groups, such as tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, tetrapentylammonium hydroxide, tetrahexylammonium hydroxide; belonging to various long-chain alkyl quaternary ammonium bases, such as dodecyl trimethyl ammonium hydroxide, tetradecyl trimethyl ammonium hydroxide, hexadecyl trimethyl ammonium hydroxide, octadecyl trimethyl ammonium hydroxide, and didecyl dimethyl ammonium hydroxide.
Further, the petroleum soft component of the invention comprises crude oil reduced pressure distillation reduced second line, reduced third line, reduced fourth line, oil slurry and distillate of oil slurry distillation, wax oil distillate after thermal cracking and one or more of aromatic oil obtained by solvent extraction of the distillate, preferably aromatic oil obtained by solvent extraction of reduced second line, reduced third line, reduced fourth line, oil slurry and mixture thereof, and further preferably aromatic oil obtained by solvent extraction of reduced third line and reduced fourth line.
Furthermore, the activated carbon comprises wood activated carbon, coal activated carbon and synthetic material activated carbon; the shape of the activated carbon comprises powder, column, ball and broken shape, and the preferred shape is powder activated carbon; the iodine value of the activated carbon is more than 600mg/g, preferably more than 900mg/g, and the granularity of the activated carbon is more than 100 meshes, preferably more than 400 meshes.
The specific preferable components and proportions of the invention comprise: the weight portion ratio of each component is 50: tetramethylammonium hydroxide 20: iodine value of 920mg/g, 400 meshes of active carbon 30;
the specific preferable components and proportions of the invention comprise: the proportion of each component is 50 percent of three-way reduced aromatic oil: tetrabutylammonium hydroxide 25: iodine value of 920mg/g, 600 meshes of active carbon 25;
the specific preferable components and proportions of the invention comprise: the proportion of each component is 50 percent of three-way reduced aromatic oil: dodecyl trimethyl ammonium hydroxide 28: iodine value of 920mg/g, 600 mesh active carbon 22;
the specific preferable components and proportions of the invention comprise: the proportion of each component is 50 percent of three-way reduced aromatic oil: didecyl dimethyl ammonium hydroxide 25: iodine value of 920mg/g, 600 meshes of active carbon 25;
the specific preferable components and proportions of the invention comprise: the proportions of the components are 50 percent of the reduced tetralin aromatic oil: tetraethylammonium hydroxide 25: iodine value of 920mg/g, 800 meshes of active carbon 25;
the specific preferable components and proportions of the invention comprise: the proportions of the components are 50 percent of the reduced tetralin aromatic oil: octadecyl ammonium hydroxide 30: iodine value of 920mg/g, 800 meshes of active carbon 20.
The invention also provides a preparation method of the anti-aging agent, which comprises the following steps:
heating the petroleum soft component to 30-150 ℃, preferably 50-80 ℃;
then adding quaternary ammonium base, and uniformly stirring for 5-120 minutes, preferably 10-30 minutes;
then adding activated carbon, and stirring uniformly for 5-120 minutes, preferably 10-30 minutes. The invention utilizes the high porosity of the active carbon, absorbs the soft component and suspends the soft component in the oil product, and surprisingly, the active carbon with a certain proportion and porosity provided by the invention can suspend in the soft component and is not layered.
The preparation method of the preferred anti-aging agent comprises the following steps:
the present invention also provides an SBR-containing petroleum asphalt having high heat storage stability, which contains 0.2 to 1.5% by mass of the anti-aging agent as claimed in any one of claims 1 to 6, preferably 0.3 to 0.6%.
A preferred method for producing petroleum asphalt comprises the steps of:
heating the SBR-containing asphalt to a temperature of 110 to 220 ℃, preferably 120 to 170 ℃, and more preferably 140 to 150 ℃;
the anti-aging agent is added and stirred for 5 minutes to 60 minutes, preferably 10 to 30 minutes.
The invention has the advantages that the heat storage aging mechanism of the SBR-containing asphalt is complex, the asphalt and SBR interact with each other, the detailed mechanism is not exact, and the traditional SBR anti-aging agent has no effect in the past. Surprisingly, the anti-aging agent of the invention can reach the asphalt standard after being stored for 40 days, and an unexpected technical effect is achieved.
Detailed Description
Grade 90 a road asphalt (containing SBR) blended with deoiled asphalt of santong cheng petrochemical company ltd was selected as a test material in the following examples, comparative examples or test examples, but the asphalt of the present invention is not limited to this selection, and other petroleum asphalt containing SBR in the art is within the selection of the present invention.
Example 1: anti-aging agent
The formula is as follows: 50g of reduced three-wire aromatic oil, 20g of tetramethyl ammonium hydroxide, 920mg/g of iodine value and 30g of 400-mesh active carbon, and preparing 100g of anti-aging agent in total.
The preparation method comprises the following steps:
heating the reduced-triplet aromatic oil to 60 ℃;
then adding tetramethylammonium hydroxide, stirring uniformly, and stirring for 20 minutes;
then adding active carbon with the iodine value of 920mg/g and 400 meshes, stirring uniformly, and stirring for 20 minutes to obtain the iodine-containing activated carbon.
Example 2: anti-aging agent
The formula is as follows: 50g of reduced-triplet aromatic oil, 25g of tetrabutylammonium hydroxide, 920mg/g of iodine value and 25g of 600-mesh active carbon, and preparing 100g of anti-aging agent in total.
The preparation method comprises the following steps:
heating the reduced-triplet aromatic oil to 60 ℃;
then tetrabutylammonium hydroxide is added and stirred evenly for 20 minutes;
then adding active carbon with the iodine value of 920mg/g and 600 meshes, stirring uniformly, and stirring for 25 minutes to obtain the iodine-containing activated carbon.
Example 3: anti-aging agent
The formula is as follows: 50g of three-wire aromatic hydrocarbon oil, 28g of dodecyl trimethyl ammonium hydroxide, 920mg/g of iodine value and 22g of 600-mesh active carbon, and preparing 100g of anti-aging agent in total.
The preparation method comprises the following steps:
heating the reduced-triplet aromatic oil to 60 ℃;
then adding dodecyl trimethyl ammonium hydroxide, stirring uniformly, and stirring for 20 minutes;
then adding active carbon with the iodine value of 920mg/g and 600 meshes, stirring uniformly, and stirring for 20 minutes to obtain the iodine-containing activated carbon.
Example 4: anti-aging agent
The formula is as follows: 50g of reduced three-wire aromatic oil, 25g of didecyl dimethyl ammonium hydroxide, 920mg/g of iodine value and 25g of 600-mesh active carbon, and preparing 100g of anti-aging agent in total.
The preparation method comprises the following steps:
heating the reduced three-line aromatic oil to 50 ℃;
then adding didecyl dimethyl ammonium hydroxide, stirring uniformly, and stirring for 10 minutes;
then adding active carbon with the iodine value of 920mg/g and 600 meshes, stirring uniformly, and stirring for 10 minutes to obtain the iodine-containing activated carbon.
Example 5: anti-aging agent
The formula is as follows: 50g of reduced tetra-aromatic hydrocarbon oil, 25g of tetraethyl ammonium hydroxide, 930mg/g of iodine value and 25g of 800-mesh active carbon, and 100g of the anti-aging agent is prepared.
The preparation method comprises the following steps:
heating the reduced tetralin aromatic oil to 80 ℃;
then adding tetraethyl ammonium hydroxide, stirring uniformly, and stirring for 30 minutes;
then adding active carbon with the iodine value of 930mg/g and 800 meshes, stirring uniformly, and stirring for 30 minutes to obtain the product.
Example 6: anti-aging agent
The formula is as follows: 50g of nortetra-arylhydrocarbon oil, 30g of octadecyl ammonium hydroxide, 940mg/g of iodine value and 20g of 800-mesh active carbon, and the anti-aging agent is prepared to obtain 100g in total.
The preparation method comprises the following steps:
heating the reduced tetralin aromatic oil to 50 ℃;
then adding octadecyl ammonium hydroxide, stirring uniformly, and stirring for 20 minutes;
then adding active carbon with an iodine value of 940mg/g and a mesh size of 800, stirring uniformly, and stirring for 25 minutes to obtain the product.
Test example 1 asphalt index analysis relating to blending of New sample
The purpose of the test is as follows: and testing whether the petroleum asphalt containing SBR after the anti-aging agent is added meets the regulation of road asphalt pavement construction technical Specification JTG F40-2004.
Test examples 1 to 6 were prepared by mixing 6 parts of asphalt with the aging inhibitors of examples 1 to 6 in an amount of 0.4% by mass (the same applies hereinafter to the aging inhibitors) and stirring, and 2kg was prepared for each test example. A portion was taken out for analysis of the asphalt sample in test example 1, and the remainder was put into an oven for storage test in test example 2.
Test examples 7 to 8 2 parts of asphalt was mixed with the anti-aging agent of example 1 in amounts of 0.3% and 0.6%, respectively, and stirred to prepare 2kg of asphalt per test example. A portion was taken out for analysis of the asphalt sample in test example 1, and the remainder was put into an oven for storage test in test example 2.
Comparative example 1: 2kg of the above bitumen without any additives were taken.
Comparative example 2: referring to Chinese patent CN101418129A, 2kg of asphalt is prepared by adding 1% (by mass) of urea into the asphalt.
Comparative example 3: referring to screening and evaluation of an antiaging agent for Tahe asphalt, 2kg of asphalt was prepared by adding Petro A (Weifang Huizi chemical Co., Ltd., WL 19050501-10) in an amount of 0.7% (by mass).
Comparative example 4: the asphalt was taken, monoethanolamine was added in an amount of 0.8% (mass percentage), and 2kg was prepared.
Experimental equipment: elongation tester (SYD-4508C-1, Shanghai Changji geological instruments Co., Ltd.), softening point tester (SYD-2806F, Shanghai Changji geological instruments Co., Ltd.), penetration tester (SYD2801E1, Shanghai Changji geological instruments Co., Ltd.), film oven (SYD-0609, Shanghai Changji geological instruments Co., Ltd.), flash point tester (SYP1001, Shanghai Yang De Petroleum instruments Co., Ltd.)
The test method comprises the following steps: taking each test example and each control example, the penetration, softening point, 10 ℃ ductility and 15 ℃ ductility of the initial and the film after-baking were respectively tested, and the specific measurement method is specifically based on T0609-20l1 asphalt film heating test, GB/T-5304-petroleum asphalt film baking oven test method, GBT 4508-.
TABLE 1 analysis of asphalt index associated with blended New samples
And (3) test results: comparative example 2 with urea added had a clear amine-type pungent odor; control 4, which had monoethanolamine added thereto, also had a noticeable pungent odor. Table 1 also shows that the sample of comparative example 2, which had a greater reduction in penetration and an increase in softening point after urea addition, had an effect on the flash point and penetration of the original base asphalt from both monoethanolamine and petroA. However, the softening point and penetration were not significantly changed in the examples from those in the blank control example 1. The reason is that the active carbon and the petroleum soft component have positive and negative effects on the penetration and the softening point respectively, namely the addition of the active carbon can increase the softening point of the asphalt and reduce the penetration, and the effects of the soft component are opposite. It is also an unexpected discovery of the present invention that the penetration and softening point of the asphalt is minimally affected in a certain range of addition).
Test example 2
The test method comprises the following steps: referring to test example 1, about 1000g of each of the prepared test example and comparative example was put in an enamel jar, covered and put in an oven, and stored for 40 days while maintaining the temperature at 140 ℃. The film oven ductility and other indexes of the samples after ten days and forty days of storage are respectively measured, and the specific determination method is specifically based on GB/T-5304-2001-petroleum asphalt film oven test method and GB/T4508-2010 asphalt ductility determination method, and the results are shown in Table 2.
TABLE 2140 ℃ results of ductility after storage for 10 and 40 days in asphalt film oven (TFOT)
And (3) test results: the technical requirements of petroleum asphalt of road asphalt pavement construction technical Specification JTG F40-2004 specify that the ductility at 10 ℃ is not less than 8cm after a No. 90 grade A asphalt film oven, and the ductility at 15 ℃ is not less than 20 cm. After ten days of storage, the ductility at 10 ℃ of the blank sample substrate asphalt is only 6cm, the ductility at 15 ℃ is only 18cm, and the technical requirements of the grade A asphalt cannot be met, and the technical requirements of the grade A asphalt can still be met in comparative examples 2, 3 and 4, but the ductility at 10 ℃ of the samples 1-8 is far higher than that of the comparative examples 2, 3 and 4, which shows that the storage period can be longer. After 40 days of storage, the 15 ℃ ductility and the 10 ℃ ductility of the blank sample comparative example 1 are further reduced, and the 15 ℃ ductility and the 10 ℃ ductility of the comparative examples 2, 3 and 4 do not meet the technical requirements of the grade A asphalt, which indicates that the urea, the PetroA and the monoethanolamine as the anti-aging agent can not ensure the qualified thermal storage period of 40 days. The technical requirements of test examples 1-8 that the ductility at 15 ℃ and the ductility at 10 ℃ are both completely compounded with the grade A asphalt show that the thermal storage stabilizer of the invention can enable the petroleum asphalt containing SBR to achieve longer thermal storage period.
In the anti-aging agent of the present invention, as a whole, activated carbon has an extremely high porosity, and adsorbed soft components and quaternary ammonium hydroxide have a slow release function, and surprisingly, the tested test examples have a longer-lasting anti-aging effect, and storage at a temperature of 140 ℃ has a longer time and a better effect than the prior art. In addition, examples 1, 2, 3, 4, 5, and 8 are significantly better than examples 4, 6, and 7, and example 6 is the first finding of the present invention because the addition amount is small, indicating that the lower the carbon number of R in the formula of the quaternary ammonium base, the better the effect, and therefore, the best choice is the quaternary ammonium base with the lower carbon number of R.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (18)
1. An anti-aging agent for preparing petroleum asphalt containing SBR with high heat storage stability is characterized by comprising the following components in parts by weight:
petroleum soft component 20-80 quaternary ammonium base 30-10 active carbon 50-10;
the quaternary ammonium base comprises a quaternary ammonium base compound shown as a formula I, an optical isomer and a solvate thereof:
in the formula R1、R2、R3Or R4Each independently selected from aliphatic or aromatic hydrocarbon groups;
the petroleum soft component comprises one or more of crude oil reduced pressure distillation minus two lines, crude oil reduced three lines, crude oil reduced four lines, oil slurry, distillate of oil slurry distillation, wax oil distillate after thermal cracking and aromatic oil obtained by solvent extraction of the distillate.
2. The anti-aging agent according to claim 1, wherein the aliphatic hydrocarbon group is an alkyl group.
3. The aging resistor according to claim 2, wherein the alkyl group is a long-chain alkyl group.
4. The anti-aging agent according to claim 1, characterized in that the components are in parts by weight:
petroleum soft component 50 quaternary ammonium base 30-20 active carbon 20-30.
5. The anti-aging agent according to claim 1,
the quaternary ammonium hydroxide comprises one or more of tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, tetrapentylammonium hydroxide, tetrahexylammonium hydroxide, dodecyltrimethylammonium hydroxide, tetradecyltrimethylammonium hydroxide, hexadecyltrimethylammonium hydroxide, octadecyltrimethylammonium hydroxide, and didodecyldimethylammonium hydroxide;
the petroleum soft component is aromatic oil obtained by solvent extraction of oil slurry and a mixture thereof;
the activated carbon comprises wood activated carbon, coal activated carbon and synthetic material activated carbon; the shape of the active carbon comprises powder, column, ball and broken.
6. The anti-aging agent according to claim 5, wherein the activated carbon is powdered activated carbon; the iodine value of the activated carbon is more than 600 mg/g.
7. The anti-aging agent of claim 6, wherein the iodine value of the activated carbon is greater than 900 mg/g.
8. The anti-aging agent according to claim 7, wherein the particle size of the activated carbon is 100 mesh or more.
9. The anti-aging agent according to claim 8, wherein the particle size of the activated carbon is 400 mesh or more.
10. The aging resistor according to claim 5, wherein the petroleum soft component is a reduced-trilinear aromatic oil and a reduced-tetralinear aromatic oil.
11. The anti-aging agent according to claim 5, wherein the weight ratio of each component is 50: tetramethylammonium hydroxide 20: 30 parts of 400-mesh active carbon; or the proportion of each component is 50 percent of the reduced three-line aromatic oil: tetrabutylammonium hydroxide 25: 600 mesh activated carbon 25; or the proportion of each component is 50 percent of the reduced three-line aromatic oil: dodecyl trimethyl ammonium hydroxide 28: 600 mesh active carbon 22; or the proportion of each component is 50 percent of the reduced three-line aromatic oil: didecyl dimethyl ammonium hydroxide 25: 600 mesh active carbon; or the ratio of each component is 50: tetraethylammonium hydroxide 25: 800 mesh active carbon 25; or the ratio of each component is 50: octadecyl ammonium hydroxide 30: 800 mesh active carbon 20.
12. The method for producing the anti-aging agent according to any one of claims 1 to 11, characterized by comprising the steps of:
heating the petroleum soft component to 30-150 ℃;
then adding quaternary ammonium base, and stirring uniformly for 5-120 minutes;
then adding active carbon, stirring uniformly for 5-120 minutes.
13. The method for preparing the anti-aging agent according to claim 12, comprising the steps of:
heating the petroleum soft component to 50-80 ℃;
then adding quaternary ammonium base, and stirring uniformly for 10-30 minutes;
then adding active carbon, and stirring uniformly for 10-30 minutes.
14. An SBR-containing petroleum asphalt having high heat storage stability, characterized in that the SBR-containing petroleum asphalt contains 0.2 to 1.5% of the anti-aging agent according to any one of claims 1 to 11.
15. The petroleum asphalt containing SBR according to claim 14 having high heat storage stability, wherein the petroleum asphalt containing SBR contains 0.3 to 0.6% of the anti-aging agent according to any one of claims 1 to 11.
16. The process for producing petroleum asphalt according to any one of claims 14 or 15,
heating the asphalt containing SBR to 110-220 ℃;
adding the anti-aging agent, and stirring for 5-60 minutes.
17. The process for producing petroleum asphalt according to claim 16,
heating the asphalt containing SBR to 120-170 ℃;
adding the anti-aging agent, and stirring for 10-30 minutes.
18. The process for producing petroleum asphalt according to claim 17,
the asphalt containing SBR is heated to 140-150 ℃.
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| CN103102706A (en) * | 2013-01-22 | 2013-05-15 | 烟台万华聚氨酯股份有限公司 | Polyurethane high-temperature-resistant anti-rutting modifier for road asphalt |
| CN106280351A (en) * | 2016-08-08 | 2017-01-04 | 梁冬 | A kind of Heat stability is good coal mining anchoring agent |
| CN107304300A (en) * | 2016-04-21 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of organic montmorillonite flame-retardant pitch and preparation method thereof |
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| CN103102706A (en) * | 2013-01-22 | 2013-05-15 | 烟台万华聚氨酯股份有限公司 | Polyurethane high-temperature-resistant anti-rutting modifier for road asphalt |
| CN107304300A (en) * | 2016-04-21 | 2017-10-31 | 中国石油化工股份有限公司 | A kind of organic montmorillonite flame-retardant pitch and preparation method thereof |
| CN106280351A (en) * | 2016-08-08 | 2017-01-04 | 梁冬 | A kind of Heat stability is good coal mining anchoring agent |
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