CN112552697A - Super-strong viscous layer oil modifier and preparation and application methods thereof - Google Patents
Super-strong viscous layer oil modifier and preparation and application methods thereof Download PDFInfo
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- CN112552697A CN112552697A CN202011389341.4A CN202011389341A CN112552697A CN 112552697 A CN112552697 A CN 112552697A CN 202011389341 A CN202011389341 A CN 202011389341A CN 112552697 A CN112552697 A CN 112552697A
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a super-strong viscous layer oil modifier and a preparation and application method thereof. By the specific proportioning and processing technology of the invention, the binding oil prepared by emulsifying the modified asphalt with the super-strong binding oil modifier obtained after molding has the advantages of high softening point, high drawing strength, excellent construction damage resistance, non-stick wheel during high-temperature construction and the like. The adhesive is further applied to an asphalt layer of an asphalt pavement and an adhesive layer between the asphalt layers, and is not easy to cause diseases such as pushing, water seepage and the like. The whole preparation process is simple and good in economy, greatly saves the transportation cost of the viscous layer oil, and is suitable for popularization and use all over the country.
Description
Technical Field
The invention relates to an asphalt modifier, in particular to a super-strong viscous layer oil modifier and a preparation and application method thereof.
Background
At present, asphalt pavements are mostly constructed by adopting a layered paving method, in order to improve the bonding performance between adjacent structural layers of the pavement, all the structural layers of the asphalt pavement can be approximately bonded into a whole by spreading adhesive layer oil between the structural layers, and the method has important influence on improving the service performance and prolonging the service life of the asphalt pavement. The interlayer bonding strength provided by the viscous layer oil can resist the stress generated by interaction between the structural layers of the pavement, and the slippage and the damage of each surface layer under the action of vehicle load can be ensured. Therefore, the bonding effect of the adhesive layer oil has an important influence on the service life of the asphalt pavement, and in order to improve the service quality and the service life of the pavement, the research on the adhesive layer oil by road workers is increasing.
In the process of asphalt pavement construction, the application effect of the traditional viscous layer oil is not ideal, on one hand, the viscous layer oil has stronger bonding property at the construction temperature. After spreading the viscous layer oil on the structural layer, its follow-up road surface structural layer is at the in-process that paves, and the tire that bituminous mixture paved equipment rolls on the viscous layer oil, because it has higher adhesive property to cause the adhesion of part viscous layer oil on the tire, leads to viscous layer oil local loss, can influence the bonding effect between the viscous asphalt pavement structural layer to influence bituminous pavement's the effect of paving and life. On the other hand, the bonding strength of the oil of the sticky layer of the emulsified asphalt system is relatively low, the connection strength between the asphalt pavement structural layers in a high-temperature environment is poor, the bonding effect of the pavement structural layers cannot be guaranteed, slippage and damage between layers are easy to generate, and the oil of the sticky layer needs a long time for demulsification and solidification in practical application, so that the construction progress of the asphalt pavement is influenced.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a super-strong adhesive layer oil modifier which has high bonding strength, excellent construction damage resistance and no wheel adhesion during high-temperature construction, and a preparation method and an application method thereof.
The technical scheme is as follows: the super-adhesive layer oil modifier comprises hard asphalt particles, a polyurethane elastomer, polymer resin, polyethylene wax, an auxiliary agent and an antioxidant.
Further, the asphalt comprises, by weight, 10-30 parts of hard asphalt particles, 1-5 parts of polyurethane elastomer, 1-5 parts of polymer resin, 1-5 parts of polyethylene wax, 5-10 parts of an auxiliary agent and 1-5 parts of an antioxidant.
Further, the softening point of the hard asphalt particles is 110-130 ℃, and the ash content is less than 1%.
Further, the polyurethane elastomer is any one or a mixture of two of a styrene-butadiene block copolymer SBS, a styrene-butadiene rubber SBR or a hydrogenated styrene-butadiene block copolymer SEBS, wherein the styrene content is 35-70%.
Further, the polymer resin is any one or a mixture of more than two of petroleum resin, phenolic resin, acrylic resin or epoxy resin, has a melting point of 80-150 ℃, a molecular weight of 1000-25000, and is in a solid particle shape.
Further, the softening point of the polyethylene wax is 100-120 ℃, and the average molecular weight is 2000-5000.
Further, the auxiliary agent is any one or a mixture of more than two of dioctyl phthalate, dibutyl phthalate and ethylene glycol butyl ether; the antioxidant is any one of synthetic antioxidants BHA, BHT and PG.
The preparation method of the super-strong viscous layer oil modifier comprises the following operation steps:
(1) adding hard asphalt particles, polyurethane elastomer, polymer resin, polyethylene wax, an auxiliary agent and an antioxidant into a feed inlet of a screw machine, wherein the rotating speed of the feed inlet is 20-60 r/min;
(2) controlling the screw temperature of the screw machine at 80-160 ℃, and the rotating speed of the screw at 500r/min, granulating and discharging the uniformly mixed material in the feeding port through the screw machine.
The application method of the super-viscous layer oil modifier comprises the following operation steps:
(1) heating petroleum asphalt to 175 ℃, adding the super-strong viscous layer oil modifier, and stirring and developing for 3-5 hours;
(2) adding emulsifier and pH regulator into appropriate amount of water to obtain soap solution;
(3) and grinding and emulsifying the soap solution and the modified asphalt by an asphalt colloid mill to prepare the high-performance viscous layer oil.
Further, the petroleum asphalt is No. 70 petroleum asphalt; the emulsifier is a quick-breaking cationic emulsifier; the pH regulator is hydrochloric acid; the dosage of the super-strong viscous layer oil modifier depends on the temperature of the site environment, and the dosage of the super-strong viscous layer oil modifier is 20 to 30 percent of the petroleum asphalt when the temperature of the site pavement is below 40 ℃; the dosage of the super-adhesive layer oil modifier is 30-40% of the petroleum asphalt when the temperature of the on-site pavement is below 60 ℃.
Furthermore, the softening point of the viscous layer oil modified by the super viscous layer oil modifier can reach more than 80 ℃, and the drawing strength at normal temperature can reach more than 1 MPa.
Has the advantages that: compared with the prior art, the invention has the following remarkable advantages:
(1) the super-strong adhesive layer oil disclosed by the invention is modified by the modifier, has a high softening point, is relatively low in adhesive property at the construction temperature, cannot be adhered to a tire, ensures the integrity of the adhesive layer, has good construction damage resistance, and is beneficial to improving the paving effect and prolonging the service life of an asphalt pavement.
(2) Compared with the viscous layer oil of an emulsified asphalt system, the modified viscous layer oil has strong cohesive property, improves the anti-pulling property between the asphalt pavement structure layers, can prevent the mutual pushing between the layers, and prolongs the service life of the asphalt pavement.
(3) The preparation process of the clay-layer oil modifier is simple, asphalt mixing equipment required for preparing clay-layer oil is easy to meet, the clay-layer oil modifier can be transported independently in the actual application process, the clay-layer oil is prepared by using the asphalt mixing equipment nearby in a construction area, compared with finished clay-layer oil, the weight of materials can be greatly reduced, the transportation cost is saved, and the clay-layer oil modifier can be popularized and applied in a large range in China.
Detailed Description
The technical solution of the present invention is further explained below.
Example 1: superstrong viscous layer oil modifier
20 parts of hard asphalt particles, 3 parts of SBS (styrene-butadiene block copolymer), 3 parts of epoxy resin, 3 parts of polyethylene wax, 6 parts of dibutyl phthalate and 3 parts of antioxidant BHT.
Preparing the super-strong viscous layer oil modifier:
a1 adding 20 parts of hard asphalt particles, 3 parts of SBS (styrene-butadiene block copolymer), 3 parts of epoxy resin, 3 parts of polyethylene wax, 6 parts of dibutyl phthalate and 3 parts of antioxidant into a feeding port of a screw machine, wherein the rotating speed of the feeding port is 40 r/min; (ii) a
A2 controlling the temperature of the screw machine at 120 ℃ and the rotating speed of the screw at 400r/min, granulating and discharging the uniformly mixed material in the feeding port by the screw machine.
The application method of the super-strong viscous layer oil modifier comprises the following steps:
s1, heating 100 parts by mass of No. 70 petroleum asphalt to 175 ℃, adding 30 parts by mass of super-strong viscous layer oil modifier, and stirring and developing for 4 hours;
s2 adding a quick-breaking cationic emulsifier and hydrochloric acid into a proper amount of water to prepare a soap solution;
s3, grinding and emulsifying the soap solution and the modified asphalt through an asphalt colloid mill to obtain the high-performance adhesive layer oil.
The super-adhesive layer oil was tested for softening point and tensile strength, and its bonding ability to a tire at 60 ℃ was studied, and the test results are shown in table 1.
Example 2: superstrong viscous layer oil modifier
20 parts of hard asphalt particles, 5 parts of ethylene butadiene rubber SBR, 5 parts of phenolic resin, 5 parts of polyethylene wax, 5 parts of dibutyl phthalate and 3 parts of antioxidant BHT.
Preparing the super-strong viscous layer oil modifier:
a1 adding 20 parts of hard asphalt particles, 5 parts of ethylene butadiene rubber (SBR), 5 parts of phenolic resin, 5 parts of polyethylene wax, 5 parts of dibutyl phthalate and 3 parts of antioxidant into a feed port of a screw machine, wherein the rotating speed of the feed port is 60 r/min; (ii) a
A2 controlling the screw temperature of the screw machine at 140 ℃ and the screw speed at 500r/min, granulating and discharging the uniformly mixed material in the feeding port by the screw machine.
The application method of the super-strong viscous layer oil modifier comprises the following steps:
s1, heating 100 parts by mass of No. 70 petroleum asphalt to 175 ℃, adding 25 parts by mass of super-strong viscous layer oil modifier, and stirring and developing for 3 hours;
s2 adding a quick-breaking cationic emulsifier and hydrochloric acid into a proper amount of water to prepare a soap solution;
s3, grinding and emulsifying the soap solution and the modified asphalt through an asphalt colloid mill to obtain the high-performance adhesive layer oil.
The procedure was the same as in example 1, and the test results are shown in Table 1.
Example 3: superstrong viscous layer oil modifier
15 parts of hard asphalt particles, 2 parts of a styrene-butadiene block copolymer SBS, 2 parts of acrylic resin, 3 parts of polyethylene wax, 7 parts of dioctyl phthalate and 2 parts of an antioxidant.
Preparing the super-strong viscous layer oil modifier:
a1 adding 15 parts of hard asphalt particles, 2 parts of styrene-butadiene block copolymer SBS, 2 parts of acrylic resin, 3 parts of polyethylene wax, 7 parts of dioctyl phthalate and 2 parts of antioxidant into a feed port of a screw machine, wherein the rotating speed of the feed port is 50 r/min; (ii) a
A2 controlling the screw temperature of the screw machine at 130 ℃ and the screw speed at 350r/min, granulating and discharging the uniformly mixed material in the feeding port by the screw machine.
The application method of the super-strong viscous layer oil modifier comprises the following steps:
s1, heating 100 parts by mass of No. 70 petroleum asphalt to 175 ℃, adding 30 parts by mass of super-strong viscous layer oil modifier, and stirring and developing for 3 hours;
s2 adding a quick-breaking cationic emulsifier and hydrochloric acid into a proper amount of water to prepare a soap solution;
s3, grinding and emulsifying the soap solution and the modified asphalt through an asphalt colloid mill to obtain the high-performance adhesive layer oil.
The procedure was the same as in example 1, and the test results are shown in Table 1.
Example 4: superstrong viscous layer oil modifier
25 parts of hard asphalt particles, 4 parts of hydrogenated styrene-butadiene block copolymer SEBS, 4 parts of acrylic resin, 4 parts of polyethylene wax, 8 parts of ethylene glycol butyl ether and 3 parts of antioxidant BHT.
Preparing the super-strong viscous layer oil modifier:
a1 adding 25 parts of hard asphalt particles, 4 parts of hydrogenated styrene-butadiene block copolymer SEBS, 4 parts of acrylic resin, 4 parts of polyethylene wax, 8 parts of ethylene glycol monobutyl ether and 3 parts of antioxidant BHT into a feed port of a screw machine, wherein the rotating speed of the feed port is 40 r/min; (ii) a
A2 controlling the screw temperature of the screw machine at 150 ℃ and the screw rotating speed at 400r/min, granulating and discharging the uniformly mixed material in the feeding port through the screw machine.
The application method of the super-strong viscous layer oil modifier comprises the following steps:
s1, heating 100 parts by mass of No. 70 petroleum asphalt to 175 ℃, adding 35 parts by mass of super-strong viscous layer oil modifier, and stirring and developing for 4 hours;
s2 adding a quick-breaking cationic emulsifier and hydrochloric acid into a proper amount of water to prepare a soap solution;
s3, grinding and emulsifying the soap solution and the modified asphalt through an asphalt colloid mill to obtain the high-performance adhesive layer oil.
The procedure was the same as in example 1, and the test results are shown in Table 1.
Comparative example 1:
in order to compare the performances of the super-strong bond oil prepared by the invention, the performance parameters of the commonly used bond oil of the emulsified asphalt system in the prior art are taken as a comparison test, the test process is the same as that of example 1, and the test results are shown in table 1.
TABLE 1 test results
The test result shows that the viscous layer oil prepared by emulsifying the modified asphalt with the super-strong viscous layer oil modifier has higher softening point and stronger tensile strength compared with the viscous layer oil of an emulsified asphalt system. And tests show that the viscous layer oil does not stick to wheels at 60 ℃, has excellent construction damage resistance, can ensure that all structural layers of the asphalt pavement have good integrity, does not have diseases such as horizon movement and the like, and improves the paving quality and the service life of the asphalt pavement.
Claims (10)
1. The super-adhesive layer oil modifier is characterized by comprising hard asphalt particles, a polyurethane elastomer, polymer resin, polyethylene wax, an auxiliary agent and an antioxidant.
2. The super-adhesive layer oil modifier according to claim 1, which comprises, by weight, 10-30 parts of hard asphalt particles, 1-5 parts of polyurethane elastomer, 1-5 parts of polymer resin, 1-5 parts of polyethylene wax, 5-10 parts of an auxiliary agent and 1-5 parts of an antioxidant.
3. The super-viscous layer oil modifier as claimed in claim 1 or 2, wherein the hard asphalt particles have a softening point of 110-130 ℃ and an ash content of less than 1%.
4. The super-adhesive layer oil modifier according to claim 1 or 2, wherein the polyurethane elastomer is any one or a mixture of two of a styrene-butadiene block copolymer SBS, a styrene-butadiene rubber SBR or a hydrogenated styrene-butadiene block copolymer SEBS, wherein the styrene content is 35-70%.
5. The super-viscous layer oil modifier according to claim 1 or 2, wherein the polymer resin is one or a mixture of two or more of petroleum resin, phenolic resin, acrylic resin or epoxy resin, has a melting point of 80-150 ℃, a molecular weight of 1000-25000, and is in the form of solid particles.
6. The super-viscous layer oil modifier as claimed in claim 1 or 2, wherein the polyethylene wax has a softening point of 100-120 ℃ and an average molecular weight of 2000-5000.
7. The super-viscous layer oil modifier according to claim 1 or 2, wherein the auxiliary agent is any one or a mixture of more than two of dioctyl phthalate, dibutyl phthalate and ethylene glycol butyl ether; the antioxidant is any one of synthetic antioxidants BHA, BHT and PG.
8. The preparation method of the super-viscous layer oil modifier according to claim 1, which comprises the following steps:
(1) adding hard asphalt particles, polyurethane elastomer, polymer resin, polyethylene wax, an auxiliary agent and an antioxidant into a feed inlet of a screw machine, wherein the rotating speed of the feed inlet is 20-60 r/min;
(2) controlling the screw temperature of the screw machine at 80-160 ℃, and the rotating speed of the screw at 500r/min, granulating and discharging the uniformly mixed material in the feeding port through the screw machine.
9. The application method of the super-viscous layer oil modifier according to claim 1, characterized by comprising the following operation steps:
(1) heating petroleum asphalt to 175 ℃, adding the super-strong viscous layer oil modifier, and stirring and developing for 3-5 hours;
(2) adding emulsifier and pH regulator into appropriate amount of water to obtain soap solution;
(3) and grinding and emulsifying the soap solution and the modified asphalt by an asphalt colloid mill to prepare the high-performance viscous layer oil.
10. The method of claim 9, wherein the petroleum asphalt is 70# petroleum asphalt; the emulsifier is a quick-breaking cationic emulsifier; the pH regulator is hydrochloric acid; the dosage of the super-strong viscous layer oil modifier depends on the temperature of the site environment, and the dosage of the super-strong viscous layer oil modifier is 20 to 30 percent of the petroleum asphalt when the temperature of the site pavement is below 40 ℃; the dosage of the super-adhesive layer oil modifier is 30-40% of the petroleum asphalt when the temperature of the on-site pavement is below 60 ℃.
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Cited By (1)
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| CN113105748A (en) * | 2021-05-30 | 2021-07-13 | 南方高科工程技术有限公司 | Super-viscous self-healing non-emulsified oil for sticking layer |
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Application publication date: 20210326 |