CN109354889A - A kind of preparation method of calcined kaolin modified pitch - Google Patents
A kind of preparation method of calcined kaolin modified pitch Download PDFInfo
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- CN109354889A CN109354889A CN201810907820.7A CN201810907820A CN109354889A CN 109354889 A CN109354889 A CN 109354889A CN 201810907820 A CN201810907820 A CN 201810907820A CN 109354889 A CN109354889 A CN 109354889A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Working-Up Tar And Pitch (AREA)
Abstract
The invention discloses a kind of preparation methods of calcined kaolin modified pitch.(1) kaolin is dried.(2) 900 DEG C of high temperature is calcined；(3) levigate, and cross the processing of 200 meshes；(4) 3-15 parts by weight step (3) sieving treated kaolin is mixed at 165~180 DEG C with 85-97 parts by weight matrix pitch, is then placed in 165~180 DEG C of baking oven, taking-up after development 30~40 minutes；(5) high speed shear instrument is used to shear 30~40 minutes within the temperature range of 165~180 DEG C with the speed of 7500~8500r/min in mixture obtained by step (4), it is cooling, obtain modified pitch.Preparation process of the present invention is simple, simple and easy, convenient for promoting;By mixing high-temperature activation kaolin into matrix pitch, it can effectively enhance the non-deformability and high-temperature behavior of modified pitch；Properties of Modified Asphalt obtained is stable, uniform in material.
Description
Technical field
The present invention relates to modified asphalt technology fields, and in particular to high-temperature activation Modification of kaolin pitch and its preparation side
Method.
Background technique
Kaolin is a kind of very important nonmetal mineral resource, and main component is kaolinite.Kaolin is porous
Property material there is good physical and chemical performance suitable for making adsorbent material and filler.Kaolin is stratiform octahedron silicate
Mineral, basic component units are oxygen-octahedron and alumina octahedral, and interlayer is bonded together by hydrogen bond and Van der Waals force, due to
The physicochemical properties kaolin such as its good plasticity, fire resistance, antiacid dissolubility and large specific surface area are used for ceramic-rubber, change
Work, medicine, the professional domains such as national defence.The softer easy dispersion of kaolin quality simultaneously suspends, it is not easy to precipitating is formed, according to this property
Matter can be incorporated into asphalt material, and probe into influence of the kaolin to asphalt performance by test.
Since kaolin commercial product is excessively concentrated, faces certain field dog-eat-dogs and be unfavorable for market and orderly transport
Make, therefore study that open up new field significant, more efficient can make full use of this resource.The distribution of Guilin Area kaolin
Extensively, wherein main component aluminosilicate, it is verified to have certain change for bitumen consistency, viscosity and non-deformability
Kind effect.
Summary of the invention
It is an object of the invention to the high-temperature activation kaolin by mixing different proportion in pitch, are mentioned using kaolin
Non-deformability, the high-temperature stability of high modified pitch make modified pitch have excellent basic performance.
Specific steps are as follows:
(1) kaolin is placed in 100 DEG C of ± 1 DEG C of thermostatic drying chambers and be dried within 24 hours, removing is therein certainly
By water.
(2) by step (1), kaolin is placed in the high temperature muffle furnace with automatic control with 900 DEG C of high temperature progress after dry
Calcining.
(3) step (2) are removed into Free water treated kaolin and carries out levigate processing, and cross the processing of 200 meshes.
(4) by 3-15 parts by weight step (3) sieving treated kaolin and 85-97 parts by weight matrix pitch 165~
It mixes, is then placed in 165~180 DEG C of baking oven at 180 DEG C, taken out after development 30~40 minutes.
(5) by above-mentioned gained mixture use high speed shear instrument within the temperature range of 165~180 DEG C with 7500~
The speed of 8500r/min is sheared 30~40 minutes, until pitch is uniform and stable, when smooth in surface after cooling, modified drip is made
It is green.
The matrix pitch is 70#A grades of bi tumenf orr oads or 90#A grades of bi tumenf orr oads.
The softer easy dispersion of kaolin quality suspends, it is not easy to formed precipitating and can preferably with matrix pitch mix, through 900
There is good thermal stability after DEG C high-temperature calcination, various ions can be adsorbed from surrounding medium, are more uniformly adhered to
Asphalt surface increases the thickness of structure pitch, conducive to the technical performance for improving pitch.
Using the above scheme, the accessible beneficial effect of the present invention includes:
(1) present invention can effectively enhance and change by mixing a certain proportion of high-temperature activation kaolin into matrix pitch
The non-deformability and high-temperature behavior of property pitch.Performance of modified bitumen is prominent, has good Technological Economy prospect.
(2) Modification of kaolin asphalt production process proposed by the present invention is simple and easy, convenient for promoting.The preparation method obtains
The Properties of Modified Asphalt arrived is stable, uniform in material.
(3) modified pitch proposed by the present invention is low in cost, and preparation process is simple, and can efficiently with kaolin this from
Right resource can improve operational market mechanism, with good economic efficiency.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below.
Embodiment 1:
Modification of kaolin pitch, ingredient by weight, activate 3 parts of kaolin, 97 parts of matrix pitch.Selected matrix drip
Blueness is Maoming 70#A grades of bi tumenf orr oad, and kaolin is calcined kaolin.
(1) kaolin is placed in 100 DEG C of thermostatic drying chambers and be dried within 24 hours, remove Free water therein.
(2) by step (1), kaolin is placed in the high temperature muffle furnace with automatic control with 900 DEG C of high temperature progress after dry
Calcining.
(3) step (2) are removed into Free water treated kaolin and carries out levigate processing, and cross the processing of 200 meshes.
(4) 3 parts by weight steps (3) sieving treated kaolin is mixed at 165 DEG C with 97 parts by weight matrix pitches,
It is then placed in 165 DEG C of baking oven, is taken out after development 40 minutes.
(5) use high speed shear instrument within the temperature range of 165 DEG C with 8500r/min's in mixture obtained by step (4)
Speed is sheared 40 minutes, until pitch is uniform and stable, when smooth in surface after cooling, modified pitch is made.
Embodiment 2:
Modification of kaolin pitch, ingredient by weight, activate 5 parts of kaolin, 95 parts of matrix pitch.Selected matrix drip
Blueness is Maoming 70#A grades of bi tumenf orr oad, and kaolin is calcined kaolin.
(1) kaolin is placed in 100 DEG C of thermostatic drying chambers and be dried within 24 hours, remove Free water therein.
(2) by step (1), kaolin is placed in the high temperature muffle furnace with automatic control with 900 DEG C of high temperature progress after dry
Calcining.
(3) step (2) are removed into Free water treated kaolin and carries out levigate processing, and cross the processing of 200 meshes.
(4) 5 parts by weight steps (3) sieving treated kaolin is mixed at 170 DEG C with 95 parts by weight matrix pitches,
It is then placed in 170 DEG C of baking oven, is taken out after development 35 minutes.
(5) use high speed shear instrument within the temperature range of 170 DEG C with 8000r/min's in mixture obtained by step (4)
Speed is sheared 35 minutes, until pitch is uniform and stable, when smooth in surface after cooling, modified pitch is made.
Embodiment 3:
Modification of kaolin pitch, ingredient by weight, activate 7 parts of kaolin, 93 parts of matrix pitch.Selected matrix drip
Blueness is Maoming 70#A grades of bi tumenf orr oad, and kaolin is calcined kaolin.
(1) kaolin is placed in 100 DEG C of thermostatic drying chambers and be dried within 24 hours, remove Free water therein.
(2) by step (1), kaolin is placed in the high temperature muffle furnace with automatic control with 900 DEG C of high temperature progress after dry
Calcining.
(3) step (2) are removed into Free water treated kaolin and carries out levigate processing, and cross the processing of 200 meshes.
(4) 7 parts by weight steps (3) sieving treated kaolin is mixed at 175 DEG C with 93 parts by weight matrix pitches,
It is then placed in 175 DEG C of baking oven, is taken out after development 30 minutes.
(5) use high speed shear instrument within the temperature range of 175 DEG C with 7500r/min's in mixture obtained by step (4)
Speed is sheared 30 minutes, until pitch is uniform and stable, when smooth in surface after cooling, modified pitch is made.
Embodiment 4:
Modification of kaolin pitch, ingredient by weight, activate 9 parts of kaolin, 91 parts of matrix pitch.Selected matrix drip
Blueness is Maoming 70#A grades of bi tumenf orr oad, and kaolin is calcined kaolin.
(1) kaolin is placed in 100 DEG C of thermostatic drying chambers and be dried within 24 hours, remove Free water therein.
(2) by step (1), kaolin is placed in the high temperature muffle furnace with automatic control with 900 DEG C of high temperature progress after dry
Calcining.
(3) step (2) are removed into Free water treated kaolin and carries out levigate processing, and cross the processing of 200 meshes.
(4) 9 parts by weight steps (3) sieving treated kaolin is mixed at 180 DEG C with 91 parts by weight matrix pitches,
It is then placed in 180 DEG C of baking oven, is taken out after development 30 minutes.
(5) use high speed shear instrument within the temperature range of 180 DEG C with 7500r/min's in mixture obtained by step (4)
Speed is sheared 30 minutes, until pitch is uniform and stable, when smooth in surface after cooling, modified pitch is made.
Embodiment 5:
Modification of kaolin pitch, ingredient by weight, activate 11 parts of kaolin, 89 parts of matrix pitch.Selected matrix
Pitch is Maoming 70#A grades of bi tumenf orr oad, and kaolin is calcined kaolin.
(1) kaolin is placed in 100 DEG C of thermostatic drying chambers and be dried within 24 hours, remove Free water therein.
(2) by step (1), kaolin is placed in the high temperature muffle furnace with automatic control with 900 DEG C of high temperature progress after dry
Calcining.
(3) step (2) are removed into Free water treated kaolin and carries out levigate processing, and cross the processing of 200 meshes.
(4) 11 parts by weight steps (3) sieving treated kaolin and 89 parts by weight matrix pitches is mixed at 175 DEG C
It closes, is then placed in 175 DEG C of baking oven, taken out after development 40 minutes.
(5) use high speed shear instrument within the temperature range of 175 DEG C with 8000r/min's in mixture obtained by step (4)
Speed is sheared 40 minutes, until pitch is uniform and stable, when smooth in surface after cooling, modified pitch is made.
Embodiment 6:
Modification of kaolin pitch, ingredient by weight, activate 13 parts of kaolin, 87 parts of matrix pitch.Selected matrix
Pitch is Maoming 70#A grades of bi tumenf orr oad, and kaolin is calcined kaolin.
(1) kaolin is placed in 100 DEG C of thermostatic drying chambers and be dried within 24 hours, remove Free water therein.
(2) by step (1), kaolin is placed in the high temperature muffle furnace with automatic control with 900 DEG C of high temperature progress after dry
Calcining.
(3) step (2) are removed into Free water treated kaolin and carries out levigate processing, and cross the processing of 200 meshes.
(4) 13 parts by weight steps (3) sieving treated kaolin and 87 parts by weight matrix pitches is mixed at 170 DEG C
It closes, is then placed in 170 DEG C of baking oven, taken out after development 35 minutes.
(5) use high speed shear instrument within the temperature range of 175 DEG C with 8500r/min's in mixture obtained by step (4)
Speed is sheared 30~40 minutes, until pitch is uniform and stable, when smooth in surface after cooling, modified pitch is made.
Embodiment 7:
Modification of kaolin pitch, ingredient by weight, activate 15 parts of kaolin, 85 parts of matrix pitch.Selected matrix
Pitch is Maoming 70#A grades of bi tumenf orr oad, and kaolin is calcined kaolin.
(1) kaolin is placed in 100 DEG C of thermostatic drying chambers and be dried within 24 hours, remove Free water therein.
(2) by step (1), kaolin is placed in the high temperature muffle furnace with automatic control with 900 DEG C of high temperature progress after dry
Calcining.
(3) step (2) are removed into Free water treated kaolin and carries out levigate processing, and cross the processing of 200 meshes.
(4) 15 parts by weight steps (3) sieving treated kaolin and 85 parts by weight matrix pitches is mixed at 170 DEG C
It closes, is then placed in 170 DEG C of baking oven, taken out after development 30 minutes.
(5) use high speed shear instrument within the temperature range of 165~180 DEG C with 8000r/ in mixture obtained by step (4)
The speed of min is sheared 30 minutes, until pitch is uniform and stable, when smooth in surface after cooling, modified pitch is made.
For the basic performance of modified pitch in the verifying present invention, using matrix pitch as control group, implementation prepared by the present invention
Example is experimental group, and test result is as shown in the table:
Needle penetration, softening point, ductility are according to " highway engineering pitch and Asphalt Mixture Experiment regulation " (JTG in upper table
E20-2011) described in test method obtained by.
Needle penetration is pitch toughness index in upper table；Needle penetration is smaller, and pitch is harder, and viscosity is bigger；Softening point characterization
The high temperature resistance of pitch, softening point is higher, and heat resistance is better；Ductility indicates the ductility of pitch, and bitumen ductility is bigger, table
Show that its plasticity is better.By data in upper table it is found that modified pitch prepared in 1~embodiment of embodiment 7 is dripped compared to matrix
Green hardness becomes larger, and resistance capacity to deformation enhancing, temperature susceplibility has obtained significant reduction, while prepared by Modification of kaolin pitch
Simple process, the prices of raw materials are cheap, have broad application prospects.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that those skilled in the art
Member can design a lot of other modification and implementations, and these modifications and implementations will fall in principle model disclosed in the present application
Within enclosing and being spiritual.
Claims (1)
1. a kind of preparation method of calcined kaolin modified pitch, it is characterised in that specific steps are as follows:
(1) kaolin is placed in 100 DEG C of ± 1 DEG C of thermostatic drying chambers and be dried within 24 hours, remove Free water therein；
(2) kaolin after step (1) drying is placed in the high temperature muffle furnace with automatic control and is forged with 900 DEG C of high temperature
It burns；
(3) step (2) are removed into Free water treated kaolin and carries out levigate processing, and cross the processing of 200 meshes；
(4) by 3-15 parts by weight step (3) sieving treated kaolin and 85-97 parts by weight matrix pitch at 165~180 DEG C
Lower mixing, is then placed in 165~180 DEG C of baking oven, takes out after development 30~40 minutes；
(5) by mixture obtained by step (4) use high speed shear instrument within the temperature range of 165~180 DEG C with 7500~
The speed of 8500r/min is sheared 30~40 minutes, until pitch is uniform and stable, when smooth in surface after cooling, modified drip is made
It is green；
The matrix pitch is 70#A grades of bi tumenf orr oads or 90#A grades of bi tumenf orr oads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810907820.7A CN109354889A (en) | 2018-08-10 | 2018-08-10 | A kind of preparation method of calcined kaolin modified pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810907820.7A CN109354889A (en) | 2018-08-10 | 2018-08-10 | A kind of preparation method of calcined kaolin modified pitch |
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| Publication Number | Publication Date |
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| CN109354889A true CN109354889A (en) | 2019-02-19 |
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| CN201810907820.7A Pending CN109354889A (en) | 2018-08-10 | 2018-08-10 | A kind of preparation method of calcined kaolin modified pitch |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3058800B2 (en) * | 1994-09-19 | 2000-07-04 | 内外セラミックス株式会社 | Artificial light-colored aggregate for roads and construction and method for producing the same |
| CN1616548A (en) * | 2004-09-23 | 2005-05-18 | 上海交通大学 | Process for preparing high temperature storage stable modified pitch material |
| KR101258187B1 (en) * | 2011-03-11 | 2013-04-25 | 조명희 | Asphalt sealant composition having excellent adhesive strength |
| CN105038280A (en) * | 2015-09-22 | 2015-11-11 | 长安大学 | SBS modified asphalt and preparation method thereof |
-
2018
- 2018-08-10 CN CN201810907820.7A patent/CN109354889A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3058800B2 (en) * | 1994-09-19 | 2000-07-04 | 内外セラミックス株式会社 | Artificial light-colored aggregate for roads and construction and method for producing the same |
| CN1616548A (en) * | 2004-09-23 | 2005-05-18 | 上海交通大学 | Process for preparing high temperature storage stable modified pitch material |
| KR101258187B1 (en) * | 2011-03-11 | 2013-04-25 | 조명희 | Asphalt sealant composition having excellent adhesive strength |
| CN105038280A (en) * | 2015-09-22 | 2015-11-11 | 长安大学 | SBS modified asphalt and preparation method thereof |
Non-Patent Citations (6)
| Title |
|---|
| ALLEN, LH 等: "Pitch deposition in newsprint mills using certain kaolin pigments", 《TAPPI JOURNAL》 * |
| 包惠明 等: "国内外沥青路面设计方法研究", 《土工基础》 * |
| 王宝民 等: "《道路建筑材料》", 31 August 2010, 中国建材工业出版社 * |
| 贾兴文: "《土木工程材料》", 31 August 2017, 重庆大学出版社 * |
| 郑水林 等: "《非金属矿加工技术与应用手册》", 31 May 2005, 冶金工业出版社 * |
| 陈韫廷: "煤沥青/改性高岭土复合材料的制备及性能探究", 《化工新型材料》 * |
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