CN112724555B - PVC new material for asphalt modification and preparation process - Google Patents
PVC new material for asphalt modification and preparation process Download PDFInfo
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- CN112724555B CN112724555B CN202011578240.1A CN202011578240A CN112724555B CN 112724555 B CN112724555 B CN 112724555B CN 202011578240 A CN202011578240 A CN 202011578240A CN 112724555 B CN112724555 B CN 112724555B
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- polyvinyl chloride
- asphalt
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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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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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
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a new PVC material for asphalt modification and a preparation process, wherein polyvinyl chloride is adopted to replace SBS rubber, the molecular chain structure of the new material is low in elasticity and better in compatibility with asphalt with the same low molecular chain elasticity, the whole extensibility of an asphalt pavement is controlled in a proper range, and the asphalt pavement is prevented from arching; in addition, the water absorption rate of the polyvinyl chloride is lower than that of SBS rubber, and the ageing resistance is better under the high-temperature weather condition; thirdly, the softened polyvinyl chloride has special shock absorption performance and plays a role in road surface shock absorption; the modified asphalt of the modified material is used for roads, so that the hardness of the roads can be improved, and the penetration can be reduced; the processing technology is simple, the material cost is low, and the method is suitable for large-scale popularization and application.
Description
Technical Field
The invention relates to the field of asphalt modified materials, in particular to a PVC new material for asphalt modification and a preparation process thereof.
Background
At present, aiming at asphalt modification, the main means is to add external additives (modifiers) such as rubber, resin, high molecular polymer, ground rubber powder or other fillers, or adopt measures such as mild oxidation processing of asphalt, so that the performance of asphalt or asphalt mixture is improved.
Among them, SBS rubber is the most commonly used asphalt-modified material, but it has the following problems:
(1) Generally, the elongation rate of asphalt on a road is not too high or too low, but the elasticity of the SBS rubber is too high at present, because the SBS rubber is of a super-elastomer structure, the elasticity of a main molecular chain structure of the asphalt is very low, the compatibility of the SBS rubber and the main molecular chain structure is not good, the SBS rubber is used for asphalt modification and then paved on the road, the road surface can be greatly extended when a vehicle is braked, and the phenomenon of arching of the asphalt road surface is easy to occur at a road junction where the vehicle is braked frequently;
(2) SBS rubber is easy to absorb water, and after the asphalt pavement absorbs water, aging is easy to accelerate under the condition of high-temperature weather.
Disclosure of Invention
In view of the above, the invention provides a new PVC material for asphalt modification and a preparation process thereof, which can improve the compatibility with asphalt and prevent the asphalt pavement from arching; in addition, the water absorption rate can be reduced, and the ageing resistance of the asphalt pavement under the high-temperature weather condition can be improved.
On the one hand, the invention provides a new PVC material for asphalt modification, which comprises the following raw materials in parts by weight,
20-36 parts of powdery polyvinyl chloride
55-75 parts of methyl chloride
Polyvinyl chloride cross-linking agent DCP 0.7 parts
1 to 5 parts of thickening agent
0.5 to 1.5 portions of zinc stearate
0.5 to 1.5 portions of calcium stearate
1-3 parts of coupling agent.
On the basis of the technical proposal, the raw material components of the composite material comprise, preferably in parts by weight,
24-32 parts of powdery polyvinyl chloride
60 to 70 parts of methyl chloride
Polyvinyl chloride cross-linking agent DCP 0.7 parts
2-4 parts of thickening agent
0.8 to 1.2 portions of zinc stearate
0.8 to 1.2 portions of calcium stearate
1.5 to 2.5 portions of coupling agent.
Further preferably, the raw material components consist of the following components in parts by weight,
28 parts of powdery polyvinyl chloride
Methyl chloride 65 parts
Polyvinyl chloride cross-linking agent DCP 0.7 parts
Thickener 3 parts
Zinc stearate 1 part
Calcium stearate 1 part
2 parts of coupling agent.
On the basis of the technical scheme, preferably, the granularity of the powdery polyvinyl chloride is 100 meshes or more.
On the basis of the technical scheme, preferably, the polyvinyl chloride cross-linking agent adopts dicumyl peroxide.
On the basis of the technical scheme, preferably, rosin is adopted as the thickener.
On the basis of the technical scheme, preferably, the coupling agent adopts a silane coupling agent.
In a second aspect, the invention provides a method for preparing the novel PVC material for asphalt modification, which comprises the following steps,
s1, weighing all raw material components according to the weight ratio;
s2, sequentially placing the raw material components into a reaction kettle at 50-90 ℃ and stirring for 6-8 hours to obtain the modified magnesium alloy.
Compared with the prior art, the novel PVC material for asphalt modification and the preparation process have the following beneficial effects:
(1) The polyvinyl chloride is adopted to replace SBS rubber, the molecular chain structure has low elasticity, and the compatibility with asphalt with the same low molecular chain elasticity is better, so that the overall elongation of the asphalt pavement is controlled in a proper range, and the asphalt pavement is prevented from arching; in addition, the water absorption rate of the polyvinyl chloride is lower than that of SBS rubber, and the ageing resistance is better under the high-temperature weather condition; thirdly, the softened polyvinyl chloride has special shock absorption performance and plays a role in road surface shock absorption;
(2) Methyl chloride is added, so that the polyvinyl chloride can be used as an environment-friendly emulsifier for PVC;
(3) Rosin is added, so that the viscosity of the modified asphalt can be increased;
(4) Zinc stearate is added, so that the ageing resistance of PVC can be improved;
(5) Calcium stearate is added and zinc stearate is matched to improve the ageing resistance of PVC;
(6) The silane coupling agent is added, so that the adhesion force between stone and modified asphalt can be increased;
(7) The dicumyl peroxide is adopted as a cross-linking agent, the temperature for generating cross-linking reaction is about 135 ℃, the heating temperature of the modified asphalt is about 170 ℃ when the modified asphalt is used for pavement construction, and the dicumyl peroxide can enable the modified asphalt to form a net structure when being stirred at high temperature;
(8) The modified asphalt of the modified material is used for roads, so that the hardness of the roads can be improved, and the penetration can be reduced; the processing technology is simple, the material cost is low, and the method is suitable for large-scale popularization and application.
Detailed Description
The following description of the embodiments of the present invention will clearly and fully describe the technical aspects of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
Example 1
The PVC new material for asphalt modification of the embodiment comprises the following raw material components in part by weight,
100 mesh polyvinyl chloride 20kg
Methyl chloride 55kg
Dicumyl peroxide 0.2kg
Rosin 1kg
Zinc stearate 0.5kg
0.5kg of calcium stearate
1kg of silane coupling agent.
The preparation method comprises the following steps:
s1, weighing all raw material components according to the weight ratio;
s2, sequentially placing the raw material components into a 50-reaction kettle, and stirring for 6 hours to obtain the catalyst.
Example 2
The PVC new material for asphalt modification of the embodiment comprises the following raw material components in part by weight,
100 mesh polyvinyl chloride 24kg
Methyl chloride 60kg
Dicumyl peroxide 0.5kg
Rosin 2kg
Zinc stearate 0.8kg
0.8kg of calcium stearate
1.5kg of silane coupling agent.
The preparation method comprises the following steps:
s1, weighing all raw material components according to the weight ratio;
s2, sequentially placing the raw material components into a reaction kettle at 70 ℃, and stirring for 6.5 hours to obtain the composite material.
Example 3
The PVC new material for asphalt modification of the embodiment comprises the following raw material components in part by weight,
100 mesh polyvinyl chloride 28kg
Methyl chloride 65kg
Dicumyl peroxide 0.7kg
Rosin 3kg
Zinc stearate 1kg
Calcium stearate 1kg
2kg of silane coupling agent.
The preparation method comprises the following steps:
s1, weighing all raw material components according to the weight ratio;
s2, sequentially placing the raw material components into a reaction kettle at 80 ℃ and stirring for 7 hours to obtain the composite material.
Example 4
The PVC new material for asphalt modification of the embodiment comprises the following raw material components in part by weight,
100 mesh polyvinyl chloride 32kg
Methyl chloride 70kg
Dicumyl peroxide 0.9kg
Rosin 4kg
Zinc stearate 1.2kg
Calcium stearate 1.2kg
2.5kg of silane coupling agent.
The preparation method comprises the following steps:
s1, weighing all raw material components according to the weight ratio;
s2, sequentially placing the raw material components into a reaction kettle at 80 ℃ and stirring for 7.5 hours to obtain the composite material.
Example 5
The PVC new material for asphalt modification of the embodiment comprises the following raw material components in part by weight,
100 mesh polyvinyl chloride 36kg
Methyl chloride 75kg
Dicumyl peroxide 1.2kg
Rosin 5kg
Zinc stearate 1.5kg
Calcium stearate 1.5kg
3kg of silane coupling agent.
The preparation method comprises the following steps:
s1, weighing all raw material components according to the weight ratio;
s2, sequentially placing the raw material components into a reaction kettle at 90 ℃, and stirring for 8 hours to obtain the composite material.
Wherein, the amounts of each component in examples 1 to 5 are shown in Table 1:
TABLE 1 amounts of the components (units/kg) of examples 1 to 5
The materials obtained in the above examples were tested for elastic deformation rate to obtain test results shown in Table 2;
stirring the materials obtained in the previous examples with asphalt and stone at 170 ℃ and carrying out road construction; and stirring the commercial SBS rubber asphalt modified material, asphalt and stone at 170 ℃ to perform road construction, and detecting indexes such as water absorption, penetration and the like to obtain detection results shown in Table 2:
TABLE 2 Performance test for asphalt modification
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (6)
1. A new PVC material for asphalt modification, characterized in that: the raw material components of the composition comprise, by weight,
20-36 parts of powdery polyvinyl chloride
55-75 parts of methyl chloride
0.2-1.2 parts of polyvinyl chloride cross-linking agent
1-5 parts of thickener
0.5 to 1.5 parts of zinc stearate
0.5-1.5 parts of calcium stearate
1-3 parts of coupling agent
The polyvinyl chloride cross-linking agent adopts dicumyl peroxide, and the thickening agent adopts rosin.
2. New PVC material for asphalt modification according to claim 1, characterized in that: the raw material components of the composition comprise, by weight,
24-32 parts of powdery polyvinyl chloride
60-70 parts of methyl chloride
0.5-0.9 part of polyvinyl chloride cross-linking agent
2-4 parts of thickening agent
0.8-1.2 parts of zinc stearate
0.8-1.2 parts of calcium stearate
1.5-2.5 parts of coupling agent.
3. New PVC material for asphalt modification according to claim 2, characterized in that: the raw materials comprise the following components in parts by weight,
28 parts of powdery polyvinyl chloride
Methyl chloride 65 parts
0.7 part of polyvinyl chloride cross-linking agent
Thickener 3 parts
Zinc stearate 1 part
Calcium stearate 1 part
2 parts of coupling agent.
4. New PVC material for asphalt modification according to claim 1, characterized in that: the granularity of the powdery polyvinyl chloride is 100 meshes or more.
5. New PVC material for asphalt modification according to claim 1, characterized in that: the coupling agent adopts a silane coupling agent.
6. The method for preparing a new PVC material for asphalt modification according to claim 1, wherein: comprises the steps of,
s1, weighing all raw material components according to the weight ratio;
and S2, sequentially placing the raw material components into a reaction kettle at 50-90 ℃ and stirring for 6-8 hours to obtain the modified magnesium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011578240.1A CN112724555B (en) | 2020-12-28 | 2020-12-28 | PVC new material for asphalt modification and preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011578240.1A CN112724555B (en) | 2020-12-28 | 2020-12-28 | PVC new material for asphalt modification and preparation process |
Publications (2)
| Publication Number | Publication Date |
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| CN112724555A CN112724555A (en) | 2021-04-30 |
| CN112724555B true CN112724555B (en) | 2023-06-09 |
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| CN202011578240.1A Active CN112724555B (en) | 2020-12-28 | 2020-12-28 | PVC new material for asphalt modification and preparation process |
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Citations (15)
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| US6054524A (en) * | 1997-09-09 | 2000-04-25 | The Goodyear Tire & Rubber Company | Plastisol having a high rubber content |
| WO2004050761A1 (en) * | 2002-11-29 | 2004-06-17 | Zeon Corporation | Rubber composition for semi-electroconductive rubber roll and semi-electroconductive rubber roll |
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| KR101239399B1 (en) * | 2012-09-18 | 2013-03-07 | 정한균 | Modified asphalt composition and method for preparing the same |
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| CN107474565A (en) * | 2017-09-13 | 2017-12-15 | 吉林大学 | It is a kind of suitable for asphalt binder of cold district and preparation method thereof |
| CN109021498A (en) * | 2018-05-25 | 2018-12-18 | 安徽猛牛彩印包装有限公司 | A kind of degradable environment-friendly type plastic film |
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| CN111117272A (en) * | 2020-02-18 | 2020-05-08 | 福建师范大学 | Low-temperature-resistant modified asphalt pavement repairing material and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE60230050D1 (en) * | 2001-09-25 | 2009-01-08 | Exxonmobil Chem Patents Inc | SOFT-POLYVINYLCHLORIDE |
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2020
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Patent Citations (15)
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| US5686147A (en) * | 1996-11-18 | 1997-11-11 | The Goodyear Tire & Rubber Company | Plastisol composition |
| US6054524A (en) * | 1997-09-09 | 2000-04-25 | The Goodyear Tire & Rubber Company | Plastisol having a high rubber content |
| WO2004050761A1 (en) * | 2002-11-29 | 2004-06-17 | Zeon Corporation | Rubber composition for semi-electroconductive rubber roll and semi-electroconductive rubber roll |
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| CN105038268A (en) * | 2015-07-23 | 2015-11-11 | 柳州联海科技有限公司 | SBS modified anti-cracking pitch preparing method |
| CN105219270A (en) * | 2015-10-25 | 2016-01-06 | 安徽路达泰克沥青新材料有限公司 | A kind of SBS latex modified emulsified bitumen and preparation method thereof and application |
| CN106883530A (en) * | 2017-02-20 | 2017-06-23 | 李清川 | The method that asphalt modifier is produced using waste mulching film |
| CN107474565A (en) * | 2017-09-13 | 2017-12-15 | 吉林大学 | It is a kind of suitable for asphalt binder of cold district and preparation method thereof |
| CN109021498A (en) * | 2018-05-25 | 2018-12-18 | 安徽猛牛彩印包装有限公司 | A kind of degradable environment-friendly type plastic film |
| CN109135121A (en) * | 2018-08-17 | 2019-01-04 | 安徽瑞腾塑业有限公司 | A kind of high tenacity PVC board suitable under low temperature |
| CN109796886A (en) * | 2019-01-31 | 2019-05-24 | 华高科(宁波)集团有限公司 | A kind of polyvinyl chloride adhesive waterproof coil |
| CN110607041A (en) * | 2019-09-20 | 2019-12-24 | 浙江江河建设有限公司 | Road asphalt additive and preparation method thereof |
| CN111117272A (en) * | 2020-02-18 | 2020-05-08 | 福建师范大学 | Low-temperature-resistant modified asphalt pavement repairing material and preparation method thereof |
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| CN112724555A (en) | 2021-04-30 |
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