CN102002249A - Waste clay compound modified asphalt and preparation method thereof - Google Patents
Waste clay compound modified asphalt and preparation method thereof Download PDFInfo
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- CN102002249A CN102002249A CN 201010587580 CN201010587580A CN102002249A CN 102002249 A CN102002249 A CN 102002249A CN 201010587580 CN201010587580 CN 201010587580 CN 201010587580 A CN201010587580 A CN 201010587580A CN 102002249 A CN102002249 A CN 102002249A
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Abstract
Waste clay compound modified asphalt and a preparation method thereof belong to the technical field of chemical building materials. The method is characterized by carrying out melt blending on a styrene-butadiene-styrene block copolymer and the waste clay in an internal mixer, then pelletizing the product with a single screw extruder, adding the pelletized product to molten base asphalt and shearing the mixture to obtain the modified asphalt matrix and finally mixing the modified asphalt matrix with a reactant to prepare the waste clay compound modified asphalt. The prepared waste clay compound modified asphalt has better road performance index and excellent stability and low temperature performance, realizes efficient and pollution-free recovery of the waste clay and has higher economic benefits and application and popularization values.
Description
Technical field
What the present invention relates to is the method in a kind of chemical building material technology field, specifically is that a kind of viscosity by useless carclazyte is issued to high stability modifying asphalt of 30000～40000Pa.S and preparation method thereof at 60 ℃ of environment.
Background technology
In oil refining process, for it is decoloured, absorption etc. are used usually and are accounted for oily 2～3% the atlapulgite that weighs, and the main component of atlapulgite is wilkinite and diatomite, have higher adsorptivity and decolourising property, the later carclazyte that decolours has lost activity promptly becomes useless carclazyte.According to the difference of the used Processes and apparatus of decolouring, generally contain 20～40% grease in the useless carclazyte, along with the fast development of modern oil prodution industry, the quantity of useless carclazyte is increasing.If these useless carclazytes can not get timely processing, not only pollute the environment, but also can cause the wasting of resources.
Find through retrieval prior art, a large amount of research: Chinese patent literature CN1709595A also has been in the recycling of useless carclazyte both at home and abroad and discloses a kind of treatment process that contains the useless carclazyte of grease, useless carclazyte is carried out manipulation of regeneration, its drying and dewatering, calcining, acid-wash activation, oven dry screening are obtained the carclazyte of regenerating, the decoloring ability of regeneration carclazyte reaches original 86% in this technology, has realized the recycle of useless carclazyte.Chinese patent literature CN101376867A discloses a kind of decolouring back leaching oil extracting process for waste carclazyte, this invention mainly is with useless carclazyte and ceramic earth, terra alba, and calcium powder, solvent wet goods thorough mixing stir, precipitated and separated carries out circulating and evaporating until obtaining qualified crude oil to its mixing oil.Advantages such as this technology has to leach carries oily efficient height, and the gained quality of crude oil is good.U.S. Patent number US4285832 discloses that Vegetable oil lipoprotein in a kind of useless carclazyte reclaims and the method for clay regeneration, wherein useless carclazyte and organic binder bond etc. mix the plastic mud shape entity of formation, after oil was carried in immersion in certain solvent, remaining entity can prepare gac and continue on for absorption.At present, the recycling of useless carclazyte mainly concentrates on extracts grease and treated earth in the useless carclazyte, yet the regeneration grease is difficult to the standard that reaches edible, if control bad inflow food channel, consequence is serious, and the cost of treated earth is higher, does not have cost advantage with respect to fresh carclazyte.Therefore a large amount of useless carclazytes is piled up, and shelves or landfill, has brought pressure for environment protection and social development.In order to solve the recycling of useless carclazyte, people are seeking convenient feasible always, the low pollution, the method that the useless carclazyte that resource utilization is high is recycled.
China uses the research of modifying asphalt and mainly concentrates on the common modifying asphalt, and is very few to the research of high-viscosity modified asphalt, and the stability problem that particularly is related to construction quality does not solve.High-viscosity modified asphalt is meant the modifying asphalt of 60 ℃ of viscosity greater than 20000Pa.s.Its polymer loading is higher, and polymkeric substance forms external phase easily, and to the stabilising method of this type modifying asphalt, research is also less both at home and abroad.China still mainly adopts on-the-spot method of mixing and stirring, to the solution well of stability problem of modifying asphalt.The advantage applies of finished product modification is aspect preferable quality control.
At present, the stabilization technique of polymer modified asphalt mainly adopts the method for chemical reaction increase-volume, improves the combination between polymkeric substance and the pitch, increases stability.But this method not too adapts to the modifying asphalt of high polymers content (greater than 6%) because this moment polymer formation external phase, the chemical reaction expanding material can cause the viscosity of polymer modified asphalt to increase, construction is not easy to pave.
For stable high-viscosity modified asphalt, SBS (styrene-butadiene-styrene block copolymer) addition is big, cause SBS particularly star-shaped sbs be difficult to be stabilized in the pitch, the stabilization technique of traditional interpolation linking agent causes gel easily, and the difficult control of stabilization process, cost is higher.The domestic work that this is done is generally all used the low-molecular-weight SBS of line style or is added extraction oil and improve stability, and it is not only poisonous to extract oil out, and price is higher.
Summary of the invention
The present invention is directed to the prior art above shortcomings, a kind of useless carclazyte composite modified asphalt and preparation method thereof is provided, utilize carclazyte can be stabilized in Residual oil in modifying asphalt and the carclazyte and play the effect that improves low-temperature ductility, reduce the cost of modifying asphalt when improving the stable and pavement performance of asphaltum with high viscosity.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of useless carclazyte composite modified asphalt, its component and mass percentage content are: 80～90% matrix pitch, 4～8% SBS and 1～8% useless carclazyte.
Described matrix pitch adopts the two dragons of Korea S No. 70, and its fundamental property index sees Table 2
The performance index of No. 70 matrix pitches of table 2 pair dragon
Described SBS is a Yanshan Petrochemical 4303.
Described useless carclazyte is the commercially available prod, and its composition sees Table 3.
The composition of the useless carclazyte of table 3
The present invention relates to above-mentioned bituminous preparation method, at first that styrene-butadiene-styrene block copolymer (SBS) and useless carclazyte is melt blended by Banbury mixer, then by the single screw extrusion machine granulation, and the granulation thing is joined in the matrix pitch of fusing and obtains modified asphalt matrix through shearing, at last through with make the carclazyte composite modified asphalt that gives up after reagent mixes.
Describedly be meant: in the SBS gross weight by Banbury mixer is melt blended, joining in the small-sized internal mixer after the useless carclazyte of SBS weight 10～80% and SBS mix accounting for, is to mix 3～15 minutes under 20～60 rev/mins the condition 80～150 ℃ and rotor speed.
Described useless carclazyte is the useless carclazyte that obtains after the Vegetable oil lipoprotein decolouring, and its main component is 20～40% grease and carclazyte, and the main component of carclazyte is diatomite and wilkinite, its high-temperature behavior excellence, and particle diameter is less, easily uniform distribution in pitch.
Described granulation is meant: is 80～200 ℃ with the banburying product in processing temperature, and rotating speed is an extruding pelletization in 10～100 rev/mins the single screw extrusion machine.
Described SBS is a hub-and-spoke configuration, and molecular weight 20～400,000 are not oil-filled, and block structure is S/B=3/7.
The ratio of the matrix pitch of described granulation thing and fusing is: granulation thing 5～30 weight parts, matrix pitch 70～95 weight parts of fusing.
Described shearing is meant: at rotating speed is 3000～4000 rev/mins, and shear temperature is to process 5～40 minutes on 140～180 ℃ the high-speed shearing machine, makes modified asphalt matrix.
The described mixing with reagent is meant: add 0.01～1.0% the reagent account for modified asphalt matrix weight, at mixing speed be stir on 300～1000 rev/mins the stirrer must be stable after 30～300 minutes the compound high-viscosity modified asphalt of useless carclazyte, described reagent is a sulphur.
Advantage of the present invention: the useless carclazyte that (1) produces the Vegetable oil lipoprotein adsorption bleaching has obtained low pollution, recycles efficiently, has avoided the secondary pollution that causes in the treating processess such as useless carclazyte accumulation, burning, oil expression; (2) stablize weighting agent as pitch, realized the stability of star-shaped sbs modifying asphalt, reduced the cost of modifying asphalt, and improved the low-temperature performance of modifying asphalt, have high economic benefit; (3) technology is simple and easy to do, need not change on a large scale existing modified asphalt device, helps realizing industrial applications.
Embodiment
Below embodiments of the invention are elaborated, present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
The bi tumenf orr oad that uses in following examples (matrix pitch) is two dragons of Korea S No. 70, and SBS is 4303 of a Yanshan Petrochemical.The useless carclazyte of Vegetable oil lipoprotein decolouring absorption is provided by Southseas Specialty Fats Industrial (Shanghai) Co., Ltd., and reagent is a sulphur.
Embodiment 1
Step 1, after SBS mix 6 minutes in small-sized internal mixer with 60 grams, mixing temperature is 160 ℃, rotor speed is 20 rev/mins, after obtaining mixture, extruding pelletization on single screw extrusion machine, extrusion temperature is 120 ℃, and screw speed is 40 rev/mins, obtains using it for modifying asphalt behind the granulation thing.
Step 2, in the modifying asphalt gross weight, 5%SBS is joined in 140 ℃ of baking ovens in the fusing matrix pitch, processing is 30 minutes on high-speed shearing machine, the shears rotating speed is 3000 rev/mins, shear temperature is 180 ℃, add 0.1 ‰ reagents, 180 ℃ were stirred 2 hours down, make the SBS modifying asphalt.Its performance index see Table 1.
Embodiment 2
Step 1, with the useless carclazyte (100/10) of SBS/ with Banbury mixer blend 6 minutes, mixing temperature is 160 ℃, rotor speed is 20 rev/mins, after obtaining mixture, extruding pelletization on single screw extrusion machine, extrusion temperature is 120 ℃, and screw speed is 40 rev/mins, obtains using it for modifying asphalt behind the granulation thing.
Step 2, in the total amount of composite modified asphalt, SBS/ with 5.5% is useless, and the carclazyte blend joins in the pitch, processing is 30 minutes on high-speed shearing machine, the shears rotating speed is 3000 rev/mins, shear temperature is 180 ℃, makes useless carclazyte composite S BS modifying asphalt, adds 0.5% reagent, 180 ℃ were stirred 2 hours down, make the SBS modifying asphalt.Performance sees Table 1.Performance index see Table 1.
Embodiment 3
Step 1, with the useless carclazyte (100/30) of SBS/ with Banbury mixer blend 6 minutes, mixing temperature is 160 ℃, rotor speed is 20 rev/mins, after obtaining mixture, extruding pelletization on single screw extrusion machine, extrusion temperature is 120 ℃, and screw speed is 40 rev/mins, obtains using it for modifying asphalt behind the granulation thing.
Step 2, in the total amount of composite modified asphalt, the SBS/ with 6.5% is useless, and the carclazyte blend joins in the pitch, treatment process is with embodiment 1 step 2.Performance index see Table 1.
Embodiment 4
Step 1, with the useless carclazyte (100/50) of SBS/ with Banbury mixer blend 6 minutes, mixing temperature is 160 ℃, rotor speed is 20 rev/mins, after obtaining mixture, extruding pelletization on single screw extrusion machine, extrusion temperature is 120 ℃, and screw speed is 40 rev/mins, obtains using it for modifying asphalt behind the granulation thing.
Step 2, in the total amount of composite modified asphalt, the SBS/ with 7.5% is useless, and the carclazyte blend joins in the pitch, treatment process is with embodiment 1 step 2.Performance index see Table 1.
Embodiment 5
Step 1, with the useless carclazyte (100/70) of SBS/ with Banbury mixer blend 6 minutes, mixing temperature is 160 ℃, rotor speed is 20 rev/mins, after obtaining mixture, extruding pelletization on single screw extrusion machine, extrusion temperature is 120 ℃, and screw speed is 40 rev/mins, obtains using it for modifying asphalt behind the granulation thing.
Step 2, in the total amount of composite modified asphalt, the SBS/ with 8.5% is useless, and the carclazyte blend joins in the pitch, treatment process is with embodiment 1 step 2.Performance index see Table 1.
The table 1 compound high-viscosity modified asphalt traditional performance of the carclazyte index of giving up
Claims (10)
1. useless carclazyte composite modified asphalt is characterized in that its component and mass percentage content are: 80～90% matrix pitch, 4～8% SBS and 1～8% useless carclazyte.
2. useless carclazyte composite modified asphalt according to claim 1, it is characterized in that the component of described useless carclazyte and mass percentage content are: the oil content 2.884% of volatilization below 200 ℃, 200～400 ℃ of volatilization oil contents 26.68%, 200～600 ℃ of volatilization oil contents 6.005% and as the carclazyte 64.431% of mineral filler.
3. the preparation method of a useless carclazyte composite modified asphalt according to claim 1 and 2, it is characterized in that, at first that styrene-butadiene-styrene block copolymer and useless carclazyte is melt blended by Banbury mixer, then by the single screw extrusion machine granulation, and the granulation thing is joined in the matrix pitch of fusing and obtains modified asphalt matrix through shearing, at last through with make the carclazyte composite modified asphalt that gives up after reagent mixes.
4. the preparation method of useless carclazyte composite modified asphalt according to claim 3, it is characterized in that, describedly be meant: in the SBS gross weight by Banbury mixer is melt blended, joining in the small-sized internal mixer after the useless carclazyte of SBS weight 10～80% and SBS mix accounting for, is to mix 3～15 minutes under 20～60 rev/mins the condition 80～150 ℃ and rotor speed.
5. the preparation method of useless carclazyte composite modified asphalt according to claim 3 is characterized in that, described useless carclazyte is the useless carclazyte that obtains after the Vegetable oil lipoprotein decolouring, and its main component is 20～40% grease and carclazyte.
6. the preparation method of useless carclazyte composite modified asphalt according to claim 3 is characterized in that, described granulation is meant: is 80～200 ℃ with the banburying product in processing temperature, and rotating speed is an extruding pelletization in 10～100 rev/mins the single screw extrusion machine.
7. according to the preparation method of claim 3 or 3 described useless carclazyte composite modified asphalts, it is characterized in that described SBS is a hub-and-spoke configuration, molecular weight 20～400,000 are not oil-filled, and block structure is S/B=3/7.
8. the preparation method of useless carclazyte composite modified asphalt according to claim 3 is characterized in that, the ratio of the matrix pitch of described granulation thing and fusing is: granulation thing 5～30 weight parts, matrix pitch 70～95 weight parts of fusing.
9. the preparation method of useless carclazyte composite modified asphalt according to claim 3, it is characterized in that, described shearing is meant: at rotating speed is 3000～4000 rev/mins, and shear temperature is to process 5～40 minutes on 140～180 ℃ the high-speed shearing machine, makes modified asphalt matrix.
10. the preparation method of useless carclazyte composite modified asphalt according to claim 3, it is characterized in that, the described mixing with reagent is meant: add 0.01～1.0% the reagent account for modified asphalt matrix weight, at mixing speed be stir on 300～1000 rev/mins the stirrer must be stable after 30～300 minutes the compound high-viscosity modified asphalt of useless carclazyte, described reagent is a sulphur.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010587580 CN102002249A (en) | 2010-12-15 | 2010-12-15 | Waste clay compound modified asphalt and preparation method thereof |
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| CN 201010587580 CN102002249A (en) | 2010-12-15 | 2010-12-15 | Waste clay compound modified asphalt and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112111166A (en) * | 2020-09-25 | 2020-12-22 | 北京紫瑞天成科技有限公司 | Waste clay asphalt mixture modifier and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030171460A1 (en) * | 2002-03-08 | 2003-09-11 | Rached Moises Cisneros | Method for crosslinking asphalt compositions and the product resulting therefrom |
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- 2010-12-15 CN CN 201010587580 patent/CN102002249A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030171460A1 (en) * | 2002-03-08 | 2003-09-11 | Rached Moises Cisneros | Method for crosslinking asphalt compositions and the product resulting therefrom |
Non-Patent Citations (2)
| Title |
|---|
| 《2005年东北大学博士学位论文》 20061231 丛玉凤 无机材料对SBS改性沥青稳定作用的研究 32-42、61 1-10 , 2 * |
| 《石油沥青》 20101031 李金亮等 植物油脂脱色废白土复合改性沥青的研究 6-10 1-10 第24卷, 第5期 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112111166A (en) * | 2020-09-25 | 2020-12-22 | 北京紫瑞天成科技有限公司 | Waste clay asphalt mixture modifier and preparation method thereof |
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Application publication date: 20110406 |