CN115011015A - Energy-saving environment-friendly USP asphalt modifier - Google Patents
Energy-saving environment-friendly USP asphalt modifier Download PDFInfo
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- CN115011015A CN115011015A CN202210410581.0A CN202210410581A CN115011015A CN 115011015 A CN115011015 A CN 115011015A CN 202210410581 A CN202210410581 A CN 202210410581A CN 115011015 A CN115011015 A CN 115011015A
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
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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
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
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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
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
- C08L2207/24—Recycled plastic recycling of old tyres and caoutchouc and addition of caoutchouc particles
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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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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention belongs to the technical field of highway building materials, and particularly relates to an energy-saving and environment-friendly USP asphalt modifier which comprises 25-30 parts of vinyl polysiloxane modified waste rubber powder, 20-30 parts of waste plastic, 5-10 parts of a catalyst, 5-10 parts of high polymer resin and 20-30 parts of a compatilizer. Compared with the pure rubber powder or waste plastic modification mode, the modified waste rubber powder and waste plastic composite modification mode adopted by the invention can better give consideration to the high-temperature performance, the low-temperature performance and the water stability of the asphalt mixture, and in addition, because the vinyl polysiloxane modified waste rubber powder is adopted by the invention, the modifier and the asphalt material can be better compatible, so that the low-temperature performance and the high-temperature performance can be better improved.
Description
Technical Field
The invention belongs to the technical field of highway building materials, and particularly relates to an energy-saving and environment-friendly USP asphalt modifier.
Background
Along with the rapid development of economic construction in China, the road construction in China is also rapidly developed, the construction quality of the road is qualitatively leap, and the reason is easily discovered because the road construction in China is provided with advanced scientific technology and strong scientific and technological support given by a process flow with high scientific and technological content. The increase of the road mileage and the improvement of the road technical grade and the road surface grade put higher requirements on the road surface laying technology. Although the traditional hot-mix asphalt mixture is simple and easy to mix and pave, a large amount of heat is consumed in the construction process, a large amount of harmful gas is discharged, and great harm is brought to constructors and the environment. The problem is a problem to be confronted by road scholars all over the world along with the progress of road construction, and therefore, europe, japan and the usa successively solve the problems of resource consumption and environmental pollution caused by the hot-mix asphalt mixture in road construction by researching a warm mixing technology. Meanwhile, the scale of highway construction in China is still further enlarged, and the problems are still further highlighted. Therefore, in order to respond to the national 'green development' concept and achieve the purposes of protecting the environment, saving energy and reducing emission, the 'low-energy-consumption and environment-friendly' asphalt mixture is developed to replace the traditional hot-mix asphalt mixture so as to meet the sustainable development concept.
Compared with the traditional hot-mix asphalt mixture, the construction mixing temperature of the low-temperature modified asphalt mixture can be reduced by 30-50 ℃, and meanwhile, the construction temperature of paving and rolling is reduced in a same ratio, so that the consumption of fuel energy is greatly reduced on the premise of meeting the road performance. Moreover, the low-temperature modification technology can also widen the working temperature range of the construction environment and prolong the construction period of the asphalt material. The construction can be carried out under the construction environment of minus 20 ℃, the construction seasons are greatly increased, so the construction can be carried out all the year round, and the reliable pavement paving material is provided for the construction in cold regions. The current road modified asphalt generally refers to polymer modified asphalt, and the polymer modified asphalt technology has been proved to be an effective asphalt modification technology by a large amount of engineering practice. The technology is widely applied to road engineering projects in China, and plays a positive role in improving the road quality in China. The polymer modified asphalt technology uses Polyethylene (PE) as a modifier in large quantities at the beginning of development, and the production process and application of the polyethylene modified asphalt are researched for many years in foreign countries and are successfully applied to a large number of pavement projects. Meanwhile, the packaging industry rises rapidly, the problem of packaging waste is increasingly prominent, and particularly, the 'white pollution' formed by packaging products such as waste plastics, rubber and the like poses a serious threat to the living environment of people and is a difficult problem which troubles all countries in the world. According to the relevant specification requirements, the construction can not be carried out when the temperature of the pavement of the expressway and the first-class highway is lower than 10 ℃, and the construction can not be carried out when the temperature of other pavements is lower than 5 ℃. Therefore, research and development of a modifier capable of reducing asphalt viscosity and reducing mixing, construction and rolling temperatures of asphalt mixtures are urgent, not only meets the energy-saving and environment-friendly purposes of green traffic advocated by China, but also can bring remarkable social and economic benefits.
Disclosure of Invention
Aiming at the problem that the high temperature requirement of asphalt on mixing, particularly on paving and rolling in the prior art is high, the invention develops an energy-saving environment-friendly USP asphalt modifier with full-excellent performance based on waste high polymer materials.
The technical scheme adopted by the invention is as follows:
an energy-saving environment-friendly USP asphalt modifier is characterized in that: the material comprises, by weight, 25-30 parts of vinyl polysiloxane modified waste rubber powder, 20-30 parts of waste plastic, 5-10 parts of a catalyst, 5-10 parts of a high polymer resin and 20-30 parts of a compatilizer.
The vinyl polysiloxane modified waste rubber powder is vinyl polysiloxane modified waste automobile tire rubber powder and vinyl polysiloxane modified waste synthetic rubber powder.
The waste plastics are waste polyethylene plastic particles.
The high molecular resin is selected from low-density polyethylene, EVA resin, polyvinyl chloride, polystyrene and polypropylene.
The compatilizer is one or more of naphthenic oil, catalytic slurry oil or aromatic oil.
The catalyst is selected from dicumyl peroxide, sulfur powder or di-tert-butyl peroxide.
Preferably, the fineness of the vinyl polysiloxane modified waste rubber powder and the fineness of the waste plastic are both 70-90 meshes.
Preferably, the mixing amount of the energy-saving and environment-friendly USP asphalt modifier is within 5-15% of that of the matrix asphalt.
Preferably, the base asphalt of the present invention is rubber asphalt.
The invention introduces waste plastic, polyethylene and plastic particles, can form a net structure in the asphalt, can obviously improve the pavement performance of the asphalt, and particularly can greatly improve the high-temperature performance of the asphalt. Meanwhile, waste products are adopted, so that the cost is lower, and the environment-friendly effect can be achieved. The vinyl polysiloxane modified waste rubber powder is introduced, so that the softening point of the asphalt can be improved, the fluidity at low temperature can be improved, the penetration degree can be reduced, the ductility at low temperature can be improved, the asphalt can generate good elastic deformation, and the high-low temperature performance, the ageing resistance and the elastic performance of the asphalt can be improved to different degrees. Compared with the pure rubber powder or waste plastic modification mode, the vinyl polysiloxane modified waste rubber powder and waste plastic composite modification mode adopted by the invention can better give consideration to the high-temperature performance, the low-temperature performance and the water stability of the asphalt mixture, and in addition, because the vinyl polysiloxane modified waste rubber powder is adopted by the invention, the modifier and the asphalt material can be better compatible, so that the low-temperature performance and the high-temperature performance can be better improved.
The added high molecular material can well reduce the viscosity of the asphalt during mixing, and the high molecular chain segment can be connected with the asphalt molecular chain so as to enhance the connection effect with the asphalt. The prepared low-temperature modifier has good crosslinking effect with asphalt, is easy to stir, does not separate, and has certain fluidity at normal temperature. After a proper amount of modifier and asphalt are mixed and stirred uniformly, the viscosity of the asphalt is reduced, and the aim of low-temperature construction can be fulfilled.
The invention also provides modified asphalt containing the energy-saving environment-friendly USP asphalt modifier. The mixing amount of the energy-saving environment-friendly USP asphalt modifier relative to the matrix asphalt is 2-10% by weight.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
the energy-saving environment-friendly USP asphalt modifier can activate the asphalt component of aged asphalt in the old asphalt mixture by using the vinyl polysiloxane modified waste rubber powder, and supplement the resin component of the old asphalt mixture by using the vinyl polysiloxane modified waste rubber powder and the waste plastic, so that the adhesion and elasticity of the original asphalt are recovered and enhanced, and meanwhile, the vinyl polysiloxane modified waste rubber powder and the waste plastic improve the thermal stability, the dynamic stability and the low-temperature performance (low-temperature freezing resistance) of the modified asphalt, and the wear resistance and the weather resistance of asphalt concrete. The compatilizer can be used as a softener and a solvent of vinyl polysiloxane modified waste rubber powder and waste plastic, so that the vinyl polysiloxane modified waste rubber powder and the waste plastic can be dissolved with other components, and simultaneously, the molecular chain of primary resin in the asphalt is increased, so that the strength of an asphalt film is improved, the service life of an asphalt pavement is prolonged, and the using amount of the used materials is increased. The energy-saving and environment-friendly USP asphalt modifier is used, the mixing temperature of the asphalt mixture is below 130 ℃, and the aging of the asphalt in the old material can not be further accelerated.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following description will clearly and completely describe the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. Thus, the following detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
Example 1: preparation of energy-saving environment-friendly USP asphalt modifier
The rubber powder comprises 30 parts by weight of vinyl polysiloxane modified waste tire rubber powder, 30 parts by weight of waste low-density polyethylene, 5 parts by weight of dicumyl peroxide, 10 parts by weight of EVA and 30 parts by weight of aromatic oil.
The fineness of the waste tire rubber powder and the fineness of the waste low-density polyethylene are both 70 meshes.
The vinyl polysiloxane modified waste tire rubber powder is formed by crosslinking vinyl polysiloxane and waste tire rubber powder.
The low-energy-saving environment-friendly USP asphalt modifier is prepared as follows:
adding 30 parts by weight of aromatic oil into a mixing kettle, adding 30 parts by weight of vinyl polysiloxane modified waste tire rubber powder, 30 parts by weight of waste low-density polyethylene and 10 parts by weight of EVA into the mixing kettle, stirring, adding 5 parts by weight of dicumyl peroxide, heating to 150 ℃, and stirring for 1 hour to obtain the viscous black low-temperature asphalt modifier.
The low temperature USP asphalt modifier properties of the present invention are shown in Table 1 below:
example 2: energy-saving environment-friendly USP asphalt modifier modified asphalt
The energy-saving and environment-friendly USP asphalt modifier prepared in example 1 is added into rubber asphalt according to the blending proportion of 2%, 4%, 6%, 8% and 10% to obtain modified rubber asphalt with different blending proportions.
The preparation method comprises the following steps:
1) heating rubber asphalt to a flowing state;
2) adding the energy-saving and environment-friendly USP asphalt modifier prepared in the example 1 into rubber asphalt according to the blending ratio of 2%, 4%, 6%, 8% and 10%, heating to 130 ℃, and stirring to ensure that the energy-saving and environment-friendly USP asphalt modifier is uniformly distributed in the rubber asphalt at the rotating speed of 100 rpm/min; obtaining the modified rubber asphalt.
The penetration index, ductility, softening point and other indexes of the rubber asphalt and the modified rubber asphalt were measured, and the measurement results are shown in table 2.
TABLE 2 comparison of the Properties of the base rubber asphalt and the modified rubber asphalt
As can be seen from the data in Table 2, the incorporation of the energy-saving and environment-friendly USP asphalt modifier increases the penetration degree and ductility of the rubber asphalt significantly, the softening point and the elastic recovery performance are reduced gradually, and the larger the incorporation amount, the larger the reduction amplitude is, which indicates that the light component in the USP low-temperature and environment-friendly energy-saving modifier plays a role of reducing the viscosity, and the rubber asphalt is softer along with the incorporation of the energy-saving and environment-friendly USP asphalt modifier. The energy-saving environment-friendly USP asphalt modifier has a low-temperature modification effect, and rubber asphalt serving as modified asphalt has good road performance but high required construction temperature and high paving difficulty, so that the energy-saving environment-friendly USP asphalt modifier can be used for carrying out composite modification on the rubber asphalt so as to achieve the effect of reducing the construction temperature of the rubber asphalt.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which are all within the protection scope of the present application.
Claims (9)
1. An energy-saving environment-friendly USP asphalt modifier is characterized in that: the material comprises, by weight, 25-30 parts of vinyl polysiloxane modified waste rubber powder, 20-30 parts of waste plastic, 5-10 parts of a catalyst, 5-10 parts of a high polymer resin and 20-30 parts of a compatilizer.
2. The energy-saving and environment-friendly USP asphalt modifier according to claim 1, which is characterized in that: the vinyl polysiloxane modified waste rubber powder is vinyl polysiloxane modified waste automobile tire rubber powder and vinyl polysiloxane modified waste synthetic rubber powder.
3. The energy-saving and environment-friendly USP asphalt modifier as claimed in claim 1, which is characterized in that: the waste plastic is waste polyethylene plastic particles.
4. The energy-saving and environment-friendly USP asphalt modifier according to claim 1, which is characterized in that: the high molecular resin is selected from low-density polyethylene, EVA resin, polyvinyl chloride, polystyrene and polypropylene.
5. The energy-saving and environment-friendly USP asphalt modifier according to claim 1, which is characterized in that: the compatilizer is one or more of naphthenic oil, catalytic slurry oil or aromatic oil.
6. The energy-saving and environment-friendly USP asphalt modifier as claimed in claim 1, which is characterized in that: the catalyst is selected from dicumyl peroxide, sulfur powder or di-tert-butyl benzene peroxide.
7. The energy-saving and environment-friendly USP asphalt modifier according to claim 1, which is characterized in that: the fineness of the vinyl polysiloxane modified waste rubber powder and the fineness of the waste plastic are both 70-90 meshes.
8. A modified asphalt mixture comprising the low-temperature USP asphalt modifier according to any one of claims 1 to 7, wherein the energy-saving and environment-friendly USP asphalt modifier is added in an amount of 2 to 10% by weight relative to the matrix asphalt.
9. The modified asphalt mixture according to claim 8, wherein the base asphalt is rubber asphalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210410581.0A CN115011015A (en) | 2022-04-19 | 2022-04-19 | Energy-saving environment-friendly USP asphalt modifier |
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| CN202210410581.0A CN115011015A (en) | 2022-04-19 | 2022-04-19 | Energy-saving environment-friendly USP asphalt modifier |
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| CN202210410581.0A Pending CN115011015A (en) | 2022-04-19 | 2022-04-19 | Energy-saving environment-friendly USP asphalt modifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115572543A (en) * | 2022-09-30 | 2023-01-06 | 中建材苏州防水研究院有限公司 | Non-cured asphalt waterproof coating and preparation method and application thereof |
Citations (3)
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|---|---|---|---|---|
| CN101235172A (en) * | 2008-01-17 | 2008-08-06 | 陕西长大博源公路养护科技有限公司 | Asphalt pavement rubber plastic composite anti-rut agent and preparation method thereof |
| CN105086481A (en) * | 2015-08-21 | 2015-11-25 | 中国路桥工程有限责任公司 | Waste rubber and plastic polymer alloy stable type rubber modified asphalt and preparation technology thereof |
| CN112980205A (en) * | 2021-01-27 | 2021-06-18 | 上海湃达建筑材料有限公司 | High-performance modified asphalt and preparation method thereof |
-
2022
- 2022-04-19 CN CN202210410581.0A patent/CN115011015A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235172A (en) * | 2008-01-17 | 2008-08-06 | 陕西长大博源公路养护科技有限公司 | Asphalt pavement rubber plastic composite anti-rut agent and preparation method thereof |
| CN105086481A (en) * | 2015-08-21 | 2015-11-25 | 中国路桥工程有限责任公司 | Waste rubber and plastic polymer alloy stable type rubber modified asphalt and preparation technology thereof |
| CN112980205A (en) * | 2021-01-27 | 2021-06-18 | 上海湃达建筑材料有限公司 | High-performance modified asphalt and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 《化工百科全书》编辑委员会: "《化工百科全书 第8卷》", 化学工业出版社, pages: 946 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115572543A (en) * | 2022-09-30 | 2023-01-06 | 中建材苏州防水研究院有限公司 | Non-cured asphalt waterproof coating and preparation method and application thereof |
| CN115572543B (en) * | 2022-09-30 | 2023-11-07 | 中建材苏州防水研究院有限公司 | Non-cured asphalt waterproof paint and preparation method and application thereof |
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