CN104292861A - High-storage-stability modified asphalt and preparation method thereof - Google Patents
High-storage-stability modified asphalt and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of modified asphalt and a preparation method thereof, and discloses high-storage-stability modified asphalt and a preparation method thereof. The preparation method of the high-storage-stability modified asphalt comprises the following steps: adding desulfuration rubber powder, butadiene styrene rubber, waste tire rubber powder and rubber filling oil of needed amounts into preheated matrix asphalt, so as to obtain a mixture, sequentially swelling and shearing the mixture, and adding an expected amount of silane coupling agent alcoholic solution, thereby obtaining the high-storage-stability modified asphalt. The high-storage-stability modified asphalt is relatively good in high-temperature property and storage stability, the technical requirements of modified asphalt are met, the technique requirements of high-class roads on the modified asphalt are met, as waste tire rubber powder is adopted, waste tires can be reused, the waste is turned into wealth, the pollution of the waste tires to the environment is reduced, and meanwhile the production cost of the high-storage-stability modified asphalt is lowered, so that the wide industrial production prospect is achieved.
Description
Technical field
the present invention relates to modifying asphalt and preparation method thereof technical field, is a kind of high storage stability modifying asphalt and preparation method thereof.
Background technology
the research of China to the Crumber rubber modified asphalt (rubber modified asphalt) for highway starts from the eighties in 20th century.Just can improve the performance of pitch by adding rubber powder from many aspects, as high temperature performance and stable storing performance, in the technique of rubber modified asphalt, paying close attention to the modification degree of rubber modified asphalt and the stability in storage of rubber modified asphalt and high-temperature behavior.When the poor compatibility of rubber and pitch, high-temperature behavior and the stable storing performance of rubber modified asphalt are poor, therefore, being separated in high-temperature storage process is one of most important technical problem of rubber modified asphalt, how to improve rubber-bitumen compatibility and has become to improve its high-temperature behavior and stable storing performance the subject matter that the current rubber asphalt producer pays close attention to.In addition, along with the develop rapidly of traffic, the usage quantity of tire constantly increases, and certainly leads to junked tire, and the abandonment of junked tire can cause black pollution, increases certain environmental protection pressure.
Summary of the invention
the invention provides a kind of high storage stability modifying asphalt and preparation method thereof, overcome the deficiency of above-mentioned prior art, be effectively applied to by using rubber powder of waste tire in the production of modifying asphalt, it effectively can solve the problem of existing junked tire to environment.
one of technical scheme of the present invention is realized by following measures: a kind of high storage stability modifying asphalt, obtain in the steps below: the first step, raw materials by weight portion meter, takes the silane coupling agent water-alcohol solution 8 parts to 20 parts that matrix pitch 150 parts to 210 parts, using rubber powder of waste tire 23 parts to 38 parts, desulfurization rubber powder 6 parts to 15 parts, 6 parts to 11 parts, styrene-butadiene rubber(SBR), rubber filling oil 1 part to 8 parts and mass percent are 10% to 20%; Second step, is preheated to 150 DEG C to 160 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C to 190 DEG C swelling after obtain swelling body, swelling time is 127 minutes to 240 minutes; 4th step, is 170 DEG C by swelling body in temperature and shears to 185 DEG C, and shear time is 42 minutes to 80 minutes, and shearing rate is 6000 revs/min to 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 150 DEG C to 170 DEG C in the swelling body after shearing.
here is the further optimization and/or improvements to one of foregoing invention technical scheme:
above-mentioned matrix pitch can be in No. 70, Kelamayi petroleum pitch, No. 90, Kelamayi petroleum pitch and No. 110, Kelamayi petroleum pitch more than one.
above-mentioned using rubber powder of waste tire can be the using rubber powder of waste tire that 60 object using rubber powder of waste tire and 80 object using rubber powder of waste tire are mixed to get, the mass mixing ratio of 60 object using rubber powder of waste tire and 80 object using rubber powder of waste tire is 1:1 to 10, or using rubber powder of waste tire is 60 object using rubber powder of waste tire or 80 object using rubber powder of waste tire.
in above-mentioned 3rd step, stirring velocity can be 50 revs/min to 300 revs/min; Or/and in the 5th step, churning time is 40 minutes to 60 minutes, and stirring velocity is 50 revs/min to 300 revs/min; Or/and mass percent is in the silane coupling agent water-alcohol solution of 10% to 20%, the mass percent of silane coupling agent is 10% to 20%, and the mass percent of dehydrated alcohol is 60% to 72%, and surplus is water.
two of technical scheme of the present invention is realized by following measures: a kind of preparation method of high storage stability modifying asphalt, carry out in the steps below: the first step, raw materials by weight portion meter, takes the silane coupling agent water-alcohol solution 8 parts to 20 parts that matrix pitch 150 parts to 210 parts, using rubber powder of waste tire 23 parts to 38 parts, desulfurization rubber powder 6 parts to 15 parts, 6 parts to 11 parts, styrene-butadiene rubber(SBR), rubber filling oil 1 part to 8 parts and mass percent are 10% to 20%; Second step, is preheated to 150 DEG C to 160 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C to 190 DEG C swelling after obtain swelling body, swelling time is 127 minutes to 240 minutes; 4th step, is 170 DEG C by swelling body in temperature and shears to 185 DEG C, and shear time is 42 minutes to 80 minutes, and shearing rate is 6000 revs/min to 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 150 DEG C to 170 DEG C in the swelling body after shearing.
here is the further optimization and/or improvements to foregoing invention technical scheme two:
above-mentioned matrix pitch can be in No. 70, Kelamayi petroleum pitch, No. 90, Kelamayi petroleum pitch and No. 110, Kelamayi petroleum pitch more than one.
above-mentioned using rubber powder of waste tire can be the using rubber powder of waste tire that 60 object using rubber powder of waste tire and 80 object using rubber powder of waste tire are mixed to get, the mass mixing ratio of 60 object using rubber powder of waste tire and 80 object using rubber powder of waste tire is 1:1 to 10, or using rubber powder of waste tire is 60 object using rubber powder of waste tire or 80 object using rubber powder of waste tire.
in above-mentioned 3rd step, stirring velocity can be 50 revs/min to 300 revs/min; Or/and in the 5th step, churning time is 40 minutes to 60 minutes, and stirring velocity is 50 revs/min to 300 revs/min; Or/and mass percent is in the silane coupling agent water-alcohol solution of 10% to 20%, the mass percent of silane coupling agent is 10% to 20%, and the mass percent of dehydrated alcohol is 60% to 72%, and surplus is water.
the high storage stability modifying asphalt that the present invention obtains has good high-temperature behavior and stability in storage, reach Technical Requirement of Modified Asphalt, meet the technical requirements of advanced road to modifying asphalt, the present invention is to the use of using rubber powder of waste tire, again can utilize junked tire, turn waste into wealth, reduce the discarded pollution on the environment of junked tire, reduce the production cost of high storage stability modifying asphalt simultaneously, there is IP prospecting widely.
Embodiment
the present invention by the restriction of following embodiment, can not determine concrete embodiment according to technical scheme of the present invention and practical situation.
below in conjunction with embodiment, the invention will be further described:
embodiment 1: this high storage stability modifying asphalt, obtain by following preparation method's step: the first step, raw materials by weight portion meter, takes the silane coupling agent water-alcohol solution 8 parts to 20 parts that matrix pitch 150 parts to 210 parts, using rubber powder of waste tire 23 parts to 38 parts, desulfurization rubber powder 6 parts to 15 parts, 6 parts to 11 parts, styrene-butadiene rubber(SBR), rubber filling oil 1 part to 8 parts and mass percent are 10% to 20%; Second step, is preheated to 150 DEG C to 160 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C to 190 DEG C swelling after obtain swelling body, swelling time is 127 minutes to 240 minutes; 4th step, is 170 DEG C by swelling body in temperature and shears to 185 DEG C, and shear time is 42 minutes to 80 minutes, and shearing rate is 6000 revs/min to 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 150 DEG C to 170 DEG C in the swelling body after shearing.The softening temperature (DEG C) of high storage stability modifying asphalt that the present embodiment obtains and segregation value (48h softening point difference, DEG C) as shown in table 1.The present embodiment is to the use of using rubber powder of waste tire, again can utilize junked tire, turn waste into wealth, reduce the discarded pollution on the environment of junked tire, reduce the production cost of high storage stability modifying asphalt simultaneously, there is IP prospecting widely.
embodiment 2: this high storage stability modifying asphalt, obtain by following preparation method's step: the first step, raw materials by weight portion meter, take matrix pitch 150 parts or 210 parts, using rubber powder of waste tire 23 parts or 38 parts, desulfurization rubber powder 6 parts or 15 parts, 6 parts, styrene-butadiene rubber(SBR) or 11 parts, rubber filling oil 1 part or 8 parts and mass percent be 10% or 20% silane coupling agent water-alcohol solution 8 parts or 20 parts; Second step, is preheated to 150 DEG C or 160 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C or 190 DEG C swelling after obtain swelling body, swelling time is 127 minutes or 240 minutes; 4th step, swelling body is 170 DEG C or 185 DEG C in temperature and shears, shear time is 42 minutes or 80 minutes, shearing rate is 6000 revs/min or 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 150 DEG C or 170 DEG C in the swelling body after shearing.
embodiment 3: this high storage stability modifying asphalt, obtain by following preparation method's step: the first step, raw materials by weight portion meter, takes the silane coupling agent water-alcohol solution 8 parts that matrix pitch 150 parts, using rubber powder of waste tire 23 parts, desulfurization rubber powder 6 parts, 6 parts, styrene-butadiene rubber(SBR), rubber filling oil 1 part and mass percent are 10%; Second step, is preheated to 150 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C swelling after obtain swelling body, swelling time is 240 minutes; 4th step, swelling body is 170 DEG C in temperature and shears, shear time is 80 minutes, shearing rate is 6000 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 150 DEG C in the swelling body after shearing.The softening temperature (DEG C) of high storage stability modifying asphalt that the present embodiment obtains and segregation value (48h softening point difference, DEG C) as shown in table 1.
embodiment 4: this high storage stability modifying asphalt, obtain by following preparation method's step: the first step, raw materials by weight portion meter, takes the silane coupling agent water-alcohol solution 20 parts that matrix pitch 210 parts, using rubber powder of waste tire 38 parts, desulfurization rubber powder 15 parts, 11 parts, styrene-butadiene rubber(SBR), rubber filling oil 8 parts and mass percent are 20%; Second step, is preheated to 160 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 190 DEG C swelling after obtain swelling body, swelling time is 127 minutes; 4th step, swelling body is 185 DEG C in temperature and shears, shear time is 42 minutes, shearing rate is 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 170 DEG C in the swelling body after shearing.The softening temperature (DEG C) of high storage stability modifying asphalt that the present embodiment obtains and segregation value (48h softening point difference, DEG C) as shown in table 1.
embodiment 5: be with the difference of above-described embodiment, matrix pitch is more than one in No. 70, Kelamayi petroleum pitch, No. 90, Kelamayi petroleum pitch and No. 110, Kelamayi petroleum pitch.
embodiment 6: be with the difference of above-described embodiment, using rubber powder of waste tire is the using rubber powder of waste tire that 60 object using rubber powder of waste tire and 80 object using rubber powder of waste tire are mixed to get, the mass mixing ratio of 60 object using rubber powder of waste tire and 80 object using rubber powder of waste tire is 1:1 to 10, or using rubber powder of waste tire is 60 object using rubber powder of waste tire or 80 object using rubber powder of waste tire.
embodiment 7: be with the difference of above-described embodiment, in the 3rd step, stirring velocity is 50 revs/min to 300 revs/min; Or/and in the 5th step, churning time is 40 minutes to 60 minutes, and stirring velocity is 50 revs/min to 300 revs/min; Or/and mass percent is in the silane coupling agent water-alcohol solution of 10% to 20%, the mass percent of silane coupling agent is 10% to 20%, and the mass percent of dehydrated alcohol is 60% to 72%, and surplus is water.
embodiment 8: this high storage stability modifying asphalt, obtain by following preparation method's step, the first step, raw materials by weight portion meter, take the silane coupling agent water-alcohol solution 20 parts that 165 parts, No. 70, Kelamayi petroleum pitch, using rubber powder of waste tire 25 parts, desulfurization rubber powder 6.6 parts, 6.6 parts, styrene-butadiene rubber(SBR), rubber filling oil 1.7 parts and mass percent are 20%, using rubber powder of waste tire is that 80 orders and 60 object using rubber powder of waste tire mix using rubber powder of waste tire, and the blending ratio of 80 orders and 60 object using rubber powder of waste tire is 1:1; Second step, is preheated to 150 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C to 190 DEG C swelling after obtain swelling body, swelling time is 180 minutes; 4th step, is 170 DEG C by swelling body in temperature and shears, shear time is 60 minutes, and shearing rate is 6000 revs/min to 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 170 DEG C in the swelling body after shearing.The softening temperature (DEG C) of high storage stability modifying asphalt obtained according to the present embodiment and segregation value (48h softening point difference, DEG C) as shown in table 1.
embodiment 9: this high storage stability modifying asphalt, obtain by following preparation method's step, the first step, raw materials by weight portion meter, take the silane coupling agent water-alcohol solution 10 parts that 153 parts, No. 70, Kelamayi petroleum pitch, using rubber powder of waste tire 23 parts, desulfurization rubber powder 6 parts, 9 parts, styrene-butadiene rubber(SBR), rubber filling oil 7.7 parts and mass percent are 20%, using rubber powder of waste tire is that 80 orders and 60 object using rubber powder of waste tire mix using rubber powder of waste tire, and the blending ratio of 80 orders and 60 object using rubber powder of waste tire is 1:1; Second step, is preheated to 150 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C to 190 DEG C swelling after obtain swelling body, swelling time is 180 minutes; 4th step, is 170 DEG C by swelling body in temperature and shears, shear time is 60 minutes, and shearing rate is 6000 revs/min to 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 170 DEG C in the swelling body after shearing.The softening temperature (DEG C) of high storage stability modifying asphalt obtained according to the present embodiment and segregation value (48h softening point difference, DEG C) as shown in table 1.
embodiment 10: this high storage stability modifying asphalt, obtain by following preparation method's step, the first step, raw materials by weight portion meter, take the silane coupling agent water-alcohol solution 15 parts that 154 parts, No. 70, Kelamayi petroleum pitch, using rubber powder of waste tire 23 parts, desulfurization rubber powder 12 parts, 9 parts, styrene-butadiene rubber(SBR), rubber filling oil 1.5 parts and mass percent are 20%, using rubber powder of waste tire is that 80 orders and 60 object using rubber powder of waste tire mix using rubber powder of waste tire, and the blending ratio of 80 orders and 60 object using rubber powder of waste tire is 1:1; Second step, is preheated to 150 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C to 190 DEG C swelling after obtain swelling body, swelling time is 180 minutes; 4th step, is 170 DEG C by swelling body in temperature and shears, shear time is 60 minutes, and shearing rate is 6000 revs/min to 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 170 DEG C in the swelling body after shearing.The softening temperature (DEG C) of high storage stability modifying asphalt obtained according to the present embodiment and segregation value (48h softening point difference, DEG C) as shown in table 1.
embodiment 11: this high storage stability modifying asphalt, obtain by following preparation method's step, the first step, raw materials by weight portion meter, take the silane coupling agent water-alcohol solution 20 parts that 201 parts, No. 90, Kelamayi petroleum pitch, using rubber powder of waste tire 30 parts, desulfurization rubber powder 8 parts, 8 parts, styrene-butadiene rubber(SBR), rubber filling oil 2 parts and mass percent are 20%, using rubber powder of waste tire is that 80 orders and 60 object using rubber powder of waste tire mix using rubber powder of waste tire, and the blending ratio of 80 orders and 60 object using rubber powder of waste tire is 1:1; Second step, is preheated to 150 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C to 190 DEG C swelling after obtain swelling body, swelling time is 180 minutes; 4th step, is 170 DEG C by swelling body in temperature and shears, shear time is 60 minutes, and shearing rate is 6000 revs/min to 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 170 DEG C in the swelling body after shearing.The softening temperature (DEG C) of high storage stability modifying asphalt obtained according to the present embodiment and segregation value (48h softening point difference, DEG C) as shown in table 1.
embodiment 12: this high storage stability modifying asphalt, obtain by following preparation method's step, the first step, raw materials by weight portion meter, take the silane coupling agent water-alcohol solution 20 parts that 190 parts, No. 90, Kelamayi petroleum pitch, using rubber powder of waste tire 28.4 parts, desulfurization rubber powder 15 parts, 11 parts, styrene-butadiene rubber(SBR), rubber filling oil 1.9 parts and mass percent are 20%, using rubber powder of waste tire is that 80 orders and 60 object using rubber powder of waste tire mix using rubber powder of waste tire, and the blending ratio of 80 orders and 60 object using rubber powder of waste tire is 1:1; Second step, is preheated to 150 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture carry out at temperature is 150 DEG C to 190 DEG C swelling after obtain swelling body, swelling time is 228 minutes; 4th step, is 170 DEG C by swelling body in temperature and shears, shear time is 76 minutes, and shearing rate is 6000 revs/min to 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 170 DEG C in the swelling body after shearing.The softening temperature (DEG C) of high storage stability modifying asphalt obtained according to the present embodiment and segregation value (48h softening point difference, DEG C) as shown in table 1.
embodiment 13: this high storage stability modifying asphalt, obtain by following preparation method's step, the first step, raw materials by weight portion meter, take the silane coupling agent water-alcohol solution 16 parts that 209 parts, No. 110, Kelamayi petroleum pitch, using rubber powder of waste tire 37.6 parts, desulfurization rubber powder 6.3 parts, 10.5 parts, styrene-butadiene rubber(SBR), rubber filling oil 3.1 parts and mass percent are 20%, using rubber powder of waste tire is that 80 orders and 60 object using rubber powder of waste tire mix using rubber powder of waste tire, and the blending ratio of 80 orders and 60 object using rubber powder of waste tire is 1:1; Second step, is preheated to 150 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C to 190 DEG C swelling after obtain swelling body, swelling time is 251 minutes; 4th step, is 170 DEG C by swelling body in temperature and shears, shear time is 84 minutes, and shearing rate is 6000 revs/min to 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 170 DEG C in the swelling body after shearing.The softening temperature (DEG C) of high storage stability modifying asphalt obtained according to the present embodiment and segregation value (48h softening point difference, DEG C) as shown in table 1.
as shown in Table 1, the softening temperature of high storage stability modifying asphalt obtained according to the present invention is 65.1 DEG C to 85 DEG C, segregation value (48h softening point difference) is 0.4 DEG C to 2.3 DEG C, illustrate that the high storage stability modifying asphalt that the present invention obtains has good high-temperature behavior and stability in storage, reach Technical Requirement of Modified Asphalt, meet the technical requirements of advanced road to modifying asphalt.
in sum, the high storage stability modifying asphalt that the present invention obtains has good high-temperature behavior and stability in storage, reach Technical Requirement of Modified Asphalt, meet the technical requirements of advanced road to modifying asphalt, the present invention, to the use of using rubber powder of waste tire, can utilize junked tire again, turn waste into wealth, reduce the discarded pollution on the environment of junked tire, reduce the production cost of high storage stability modifying asphalt simultaneously, there is IP prospecting widely.
above technical characteristic constitutes embodiments of the invention, and it has stronger adaptability and implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
table 1
| ? | Technical requirements | Embodiment 1 | Embodiment 3 | Embodiment 4 | Embodiment 8 | Embodiment 9 | Embodiment 10 | Embodiment 11 | Embodiment 12 | Embodiment 13 |
| Softening temperature/DEG C | ＞65 | 65.1 to 85 | 65.1 | 85 | 81 | 67.5 | 75.3 | 66 | 68.2 | 65.1 |
| Segregation value/DEG C | ＜2.5 | 0.4 to 2.3 | 0.4 | 2.3 | 2.1 | 1.0 | 1.5 | 0.6 | 1.7 | 1.7 |
note: the technical requirements in table 1 is Technical Requirement of Modified Asphalt.
Claims (10)
1. a high storage stability modifying asphalt, it is characterized in that obtaining in the steps below: the first step, raw materials by weight portion meter, takes the silane coupling agent water-alcohol solution 8 parts to 20 parts that matrix pitch 150 parts to 210 parts, using rubber powder of waste tire 23 parts to 38 parts, desulfurization rubber powder 6 parts to 15 parts, 6 parts to 11 parts, styrene-butadiene rubber(SBR), rubber filling oil 1 part to 8 parts and mass percent are 10% to 20%; Second step, is preheated to 150 DEG C to 160 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C to 190 DEG C swelling after obtain swelling body, swelling time is 127 minutes to 240 minutes; 4th step, is 170 DEG C by swelling body in temperature and shears to 185 DEG C, and shear time is 42 minutes to 80 minutes, and shearing rate is 6000 revs/min to 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 150 DEG C to 170 DEG C in the swelling body after shearing.
2. high storage stability modifying asphalt according to claim 1, is characterized in that matrix pitch is more than one in No. 70, Kelamayi petroleum pitch, No. 90, Kelamayi petroleum pitch and No. 110, Kelamayi petroleum pitch.
3. high storage stability modifying asphalt according to claim 1 and 2, it is characterized in that using rubber powder of waste tire is the using rubber powder of waste tire that 60 object using rubber powder of waste tire and 80 object using rubber powder of waste tire are mixed to get, the mass mixing ratio of 60 object using rubber powder of waste tire and 80 object using rubber powder of waste tire is 1:1 to 10, or using rubber powder of waste tire is 60 object using rubber powder of waste tire or 80 object using rubber powder of waste tire.
4. high storage stability modifying asphalt according to claim 1 and 2, is characterized in that in the 3rd step, and stirring velocity is 50 revs/min to 300 revs/min; Or/and in the 5th step, churning time is 40 minutes to 60 minutes, and stirring velocity is 50 revs/min to 300 revs/min; Or/and mass percent is in the silane coupling agent water-alcohol solution of 10% to 20%, the mass percent of silane coupling agent is 10% to 20%, and the mass percent of dehydrated alcohol is 60% to 72%, and surplus is water.
5. high storage stability modifying asphalt according to claim 3, is characterized in that in the 3rd step, and stirring velocity is 50 revs/min to 300 revs/min; Or/and in the 5th step, churning time is 40 minutes to 60 minutes, and stirring velocity is 50 revs/min to 300 revs/min; Or/and mass percent is in the silane coupling agent water-alcohol solution of 10% to 20%, the mass percent of silane coupling agent is 10% to 20%, and the mass percent of dehydrated alcohol is 60% to 72%, and surplus is water.
6. the preparation method of a high storage stability modifying asphalt according to claim 1, it is characterized in that carrying out in the steps below: the first step, raw materials by weight portion meter, takes the silane coupling agent water-alcohol solution 8 parts to 20 parts that matrix pitch 150 parts to 210 parts, using rubber powder of waste tire 23 parts to 38 parts, desulfurization rubber powder 6 parts to 15 parts, 6 parts to 11 parts, styrene-butadiene rubber(SBR), rubber filling oil 1 part to 8 parts and mass percent are 10% to 20%; Second step, is preheated to 150 DEG C to 160 DEG C by the matrix pitch of aequum; 3rd step, mixture is obtained in matrix pitch after the desulfurization rubber powder of aequum, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil are sequentially joined preheating under whipped state, after desulfurization rubber powder, styrene-butadiene rubber(SBR), using rubber powder of waste tire and rubber filling oil add, mixture is carried out at temperature is 150 DEG C to 190 DEG C swelling after obtain swelling body, swelling time is 127 minutes to 240 minutes; 4th step, is 170 DEG C by swelling body in temperature and shears to 185 DEG C, and shear time is 42 minutes to 80 minutes, and shearing rate is 6000 revs/min to 7500 revs/min; 5th step, adds the silane coupling agent water-alcohol solution of aequum and obtains high storage stability modifying asphalt after stirring at temperature is 150 DEG C to 170 DEG C in the swelling body after shearing.
7. the preparation method of high storage stability modifying asphalt according to claim 6, is characterized in that matrix pitch is more than one in No. 70, Kelamayi petroleum pitch, No. 90, Kelamayi petroleum pitch and No. 110, Kelamayi petroleum pitch.
8. the preparation method of the high storage stability modifying asphalt according to claim 6 or 7, it is characterized in that using rubber powder of waste tire is the using rubber powder of waste tire that 60 object using rubber powder of waste tire and 80 object using rubber powder of waste tire are mixed to get, the mass mixing ratio of 60 object using rubber powder of waste tire and 80 object using rubber powder of waste tire is 1:1 to 10, or using rubber powder of waste tire is 60 object using rubber powder of waste tire or 80 object using rubber powder of waste tire.
9. the preparation method of the high storage stability modifying asphalt according to claim 6 or 7, is characterized in that in the 3rd step, and stirring velocity is 50 revs/min to 300 revs/min; Or/and in the 5th step, churning time is 40 minutes to 60 minutes, and stirring velocity is 50 revs/min to 300 revs/min; Or/and mass percent is in the silane coupling agent water-alcohol solution of 10% to 20%, the mass percent of silane coupling agent is 10% to 20%, and the mass percent of dehydrated alcohol is 60% to 72%, and surplus is water.
10. the preparation method of high storage stability modifying asphalt according to claim 8, is characterized in that in the 3rd step, and stirring velocity is 50 revs/min to 300 revs/min; Or/and in the 5th step, churning time is 40 minutes to 60 minutes, and stirring velocity is 50 revs/min to 300 revs/min; Or/and mass percent is in the silane coupling agent water-alcohol solution of 10% to 20%, the mass percent of silane coupling agent is 10% to 20%, and the mass percent of dehydrated alcohol is 60% to 72%, and surplus is water.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104693820A (en) * | 2015-02-12 | 2015-06-10 | 北京路德永泰环保科技有限公司 | Composite-waste-rubber-powder-particle modified asphalt mixture capable of being stored stably and preparation method thereof |
| CN104693817A (en) * | 2015-02-12 | 2015-06-10 | 北京路德永泰环保科技有限公司 | Composite-waste-rubber-powder-particle modified asphalt capable of being stored stably and preparation method thereof |
| CN109957254A (en) * | 2019-03-29 | 2019-07-02 | 新疆交建路友道路材料科技有限公司 | A kind of preparation method of SBS modified pitch |
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| CN101205374A (en) * | 2006-12-21 | 2008-06-25 | 上海群康沥青科技有限公司 | Novel rubber asphalt composition |
| CN101824226A (en) * | 2010-04-12 | 2010-09-08 | 山东大学 | Preparation method of waste and oil tire rubber powder modified asphalt with stable heat storage |
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| CN101205374A (en) * | 2006-12-21 | 2008-06-25 | 上海群康沥青科技有限公司 | Novel rubber asphalt composition |
| CN101824226A (en) * | 2010-04-12 | 2010-09-08 | 山东大学 | Preparation method of waste and oil tire rubber powder modified asphalt with stable heat storage |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104693820A (en) * | 2015-02-12 | 2015-06-10 | 北京路德永泰环保科技有限公司 | Composite-waste-rubber-powder-particle modified asphalt mixture capable of being stored stably and preparation method thereof |
| CN104693817A (en) * | 2015-02-12 | 2015-06-10 | 北京路德永泰环保科技有限公司 | Composite-waste-rubber-powder-particle modified asphalt capable of being stored stably and preparation method thereof |
| CN109957254A (en) * | 2019-03-29 | 2019-07-02 | 新疆交建路友道路材料科技有限公司 | A kind of preparation method of SBS modified pitch |
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Application publication date: 20150121 |