CN113956843A - High-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive - Google Patents
High-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive Download PDFInfo
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- CN113956843A CN113956843A CN202111312849.9A CN202111312849A CN113956843A CN 113956843 A CN113956843 A CN 113956843A CN 202111312849 A CN202111312849 A CN 202111312849A CN 113956843 A CN113956843 A CN 113956843A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J195/00—Adhesives based on bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
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Abstract
The invention discloses a high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive, which relates to the technical field of pavement repairing materials and is prepared from the following raw materials in parts by weight: 100 parts of petroleum asphalt, 5-30 parts of styrene-butadiene-styrene block copolymer, 1-10 parts of compatilizer and 0.5-5 parts of stabilizer; according to the invention, modified epoxidized soybean oil is used as a compatilizer, and SBS is used for modifying petroleum asphalt with the aid of a stabilizer to obtain novel asphalt pavement crack pouring adhesive; the prepared crack pouring adhesive has good construction performance, does not contain volatile solvent, is not shrunk basically during curing, has high bonding strength after curing, can bear strain caused by crack expansion and has good waterproofness and corrosion resistance, thereby effectively prolonging the service life of the asphalt pavement.
Description
The technical field is as follows:
the invention relates to the technical field of pavement repairing materials, in particular to a high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive.
Background art:
the petroleum asphalt has obvious temperature sensitivity, is easy to soften at high temperature and is easy to become brittle at low temperature, so that the asphalt pavement is easy to crack in winter in northern areas, and permanent pavement cracks appear. When rainy season comes or ice and snow melt, water can permeate into the base course of road surface through the crack, leads to road surface base course to be destroyed to shorten bituminous paving's life. When ordinary asphalt or conventional modified asphalt is used for repairing cracks of asphalt pavement, the asphalt has the first softening point, so that the phenomena of oil bleeding and vehicle carrying-away are easy to occur at high temperature, and the asphalt becomes brittle and falls off at low temperature and is difficult to bear the stress of low-temperature expansion of the cracks, so that the cracks are easy to occur.
The pouring sealant is a material specially used for repairing the cracks of the asphalt pavement, has excellent high and low temperature performance and elastic recovery performance, can bear strain caused by the expansion and contraction of the cracks, and prolongs the service life of repairing. Patent CN103571212B discloses an asphalt pavement pouring sealant, which is composed of a compatilizer, a modifier, a stabilizer and matrix asphalt, wherein the compatilizer is reduced second-line extract oil, reduced third-line extract oil or a mixture thereof with high aromatic phenol content, the modifier is selected from at least one of styrene-butadiene-styrene block copolymer (SBS), rubber powder and styrene butadiene rubber, and the stabilizer is a mixture of inorganic sulfur, an organic vulcanizing agent and rubber powder; the prepared pouring sealant has high softening point, high low-temperature elongation and proper elastic recovery rate. The invention aims to further optimize the service performance of the pouring sealant, improves the formula of the conventional pouring sealant, and prepares the low-temperature-resistant asphalt pavement pouring sealant with higher service performance and high elastic recovery rate.
The invention content is as follows:
the invention aims to solve the technical problem of providing the high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring sealant, which takes modified epoxy soybean oil as a compatilizer to replace petroleum fractions, so that the compatibility of SBS and asphalt is better improved, and the service performance of the pouring sealant is further optimized.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
the high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive is prepared from the following raw materials in parts by weight:
100 parts of petroleum asphalt, 5-30 parts of styrene-butadiene-styrene block copolymer, 1-10 parts of compatilizer and 0.5-5 parts of stabilizer;
the compatilizer is modified epoxidized soybean oil, and the preparation method comprises the following steps: firstly, preheating epoxidized soybean oil, then adding 1-phenyl-5-hydroxypyrazole, dropwise adding concentrated sulfuric acid, heating for reaction, adding water for extraction after the reaction is finished, carrying out reduced pressure distillation on an oil phase to recover unreacted epoxidized soybean oil, and obtaining a distillation residue, namely the modified epoxidized soybean oil.
The mol ratio of the epoxidized soybean oil to the 1-phenyl-5-hydroxypyrazole is 100: 20-40.
The concentrated sulfuric acid is 98% concentrated sulfuric acid, and the dosage of the concentrated sulfuric acid is 1-5% of the total mass of the epoxidized soybean oil and the 1-phenyl-5-hydroxypyrazine.
The preheating temperature is 50-70 ℃.
The reaction temperature is 80-100 ℃.
The petroleum asphalt is at least one of 60# petroleum asphalt, 70# petroleum asphalt, 90# petroleum asphalt, 100# petroleum asphalt and 110# petroleum asphalt.
The stabilizer is one or a mixture of inorganic sulfur and organic sulfur.
The preparation method of the high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive comprises the following steps: heating the petroleum asphalt until the petroleum asphalt completely flows, adding the styrene-butadiene-styrene block copolymer and the compatilizer, transferring the mixture into a high-speed shearing machine for treatment, adding the stabilizer, continuing the shearing treatment, and finally transferring the mixture into a high-speed mixer for treatment to obtain the crack pouring sealant.
When petroleum asphalt and SBS are blended, because the structure and physical properties are different, the two have compatibility problems, so that the blending compatibility of the asphalt and SBS needs to be promoted by adding a compatilizer, and the petroleum asphalt is better modified by SBS. At present, petroleum fractions are generally used as compatilizers, but the petroleum fractions are liquid at normal temperature, so that the curing performance of the pouring sealant can be influenced after the petroleum fractions are used as the compatilizers and are added into the pouring sealant in large quantities. Aiming at the problem, the modified epoxidized soybean oil is selected as the compatilizer, can play a good compatible role on the petroleum asphalt and the SBS under the condition of low addition amount, has wide sources, can be prepared into the modified epoxidized soybean oil through simple chemical modification, and is more favorable for improving the service performance of the crack pouring adhesive under the same addition amount compared with petroleum fractions.
The technical scheme adopts SBS to modify the petroleum asphalt, wherein the compatilizer is used for softening and swelling the petroleum asphalt, and the stabilizer is used for combining the SBS and the petroleum asphalt in a meshed manner to generate the SBS-petroleum asphalt graft. The modified terpene resin is also added as a component of the crack pouring sealant, so that the service performance of the crack pouring sealant is further optimized.
The technical problem to be solved by the invention can also be realized by adopting the following technical scheme:
the high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive is prepared from the following raw materials in parts by weight:
100 parts of petroleum asphalt, 5-30 parts of styrene-butadiene-styrene block copolymer, 1-10 parts of compatilizer, 0.5-5 parts of stabilizer and 1-10 parts of modified terpene resin;
the compatilizer is modified epoxidized soybean oil, and the preparation method comprises the following steps: firstly, preheating epoxidized soybean oil, then adding 1-phenyl-5-hydroxypyrazole, dropwise adding concentrated sulfuric acid, heating for reaction, adding water for extraction after the reaction is finished, carrying out reduced pressure distillation on an oil phase to recover unreacted epoxidized soybean oil, and obtaining a distillation residue which is modified epoxidized soybean oil;
the modified terpene resin is prepared by taking beta-pinene and vinyl pyridine as monomers through polymerization reaction, wherein the dosage of the beta-pinene accounts for 60-80% of the total amount of the monomers, and the dosage of the vinyl pyridine accounts for 20-40% of the total amount of the monomers.
The mol ratio of the epoxidized soybean oil to the 1-phenyl-5-hydroxypyrazole is 100: 20-40.
The concentrated sulfuric acid is 98% concentrated sulfuric acid, and the dosage of the concentrated sulfuric acid is 1-5% of the total mass of the epoxidized soybean oil and the 1-phenyl-5-hydroxypyrazine.
The preheating temperature is 50-70 ℃.
The reaction temperature is 80-100 ℃.
The petroleum asphalt is at least one of 60# petroleum asphalt, 70# petroleum asphalt, 90# petroleum asphalt, 100# petroleum asphalt and 110# petroleum asphalt.
The stabilizer is one or a mixture of inorganic sulfur and organic sulfur.
The preparation method of the high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive comprises the following steps: heating the petroleum asphalt until the petroleum asphalt completely flows, adding the styrene-butadiene-styrene block copolymer and the compatilizer, transferring the mixture into a high-speed shearing machine for processing, adding the stabilizer and the modified terpene resin, continuing shearing, and transferring the mixture into a high-speed mixer for processing to obtain the crack pouring sealant.
The invention has the beneficial effects that: according to the invention, modified epoxidized soybean oil is used as a compatilizer, and SBS is used for modifying petroleum asphalt with the aid of a stabilizer to obtain novel asphalt pavement crack pouring adhesive; the prepared crack pouring adhesive has good construction performance, does not contain volatile solvent, is not shrunk basically during curing, has high bonding strength after curing, can bear strain caused by crack expansion and has good waterproofness and corrosion resistance, thereby effectively prolonging the service life of the asphalt pavement; meanwhile, the asphalt pavement crack repairing agent has good low temperature resistance, can not crack in a low-temperature environment, has high elastic recovery rate and has good repairing effect on asphalt pavement cracks.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The 90# petroleum asphalt is from the company Limited for the sale of the Jianlong asphalt from the company SchenTai, the terpene resin is from the company Limited for the chemical industry of Guangzhou Songbao, the SBS is from the company Limited for the plastics and the company KTR-101, the epoxy soybean oil is from the company Limited for the plasticizer technology of Jiangsu Shengkai, the sulfur powder is from the company Limited for the technology of Beijing Haoko, and the reduced-pitch oil is from the company Limited for the pitch of the Zhonghai.
Example 1
Preparation of the compatilizer: firstly, 100g of epoxidized soybean oil is preheated to 55 ℃, 32g of 1-phenyl-5-hydroxypyrazole is added, 2.5g of 98% concentrated sulfuric acid is added dropwise, the mixture is heated to 85 ℃ for reaction for 5 hours, water is added for extraction after the reaction is finished, the unreacted epoxidized soybean oil is recovered by oil phase reduced pressure distillation, and the distillation residue is the modified epoxidized soybean oil.
Preparing a crack pouring adhesive: heating 100g of 90# petroleum asphalt to 180 ℃ to completely flow, adding 25g of styrene-butadiene-styrene block copolymer and 10g of the prepared compatilizer, transferring the mixture into a high-speed shearing machine for treatment, wherein the shearing temperature is 180 ℃, the shearing time is 30min, then adding 0.85g of sulfur powder, continuing the shearing treatment, the shearing temperature is 180 ℃, the shearing time is 30min, transferring the mixture into a high-speed mixer for treatment, the mixing speed is 1000r/min, and the mixing time is 30min, thus obtaining the crack pouring sealant.
Example 2
Example 2 differs from example 1 in that the amount of the compatibilizing agent was replaced by 8 g.
Preparation of the compatilizer: firstly, 100g of epoxidized soybean oil is preheated to 55 ℃, 32g of 1-phenyl-5-hydroxypyrazole is added, 2.5g of 98% concentrated sulfuric acid is added dropwise, the mixture is heated to 85 ℃ for reaction for 5 hours, water is added for extraction after the reaction is finished, the unreacted epoxidized soybean oil is recovered by oil phase reduced pressure distillation, and the distillation residue is the modified epoxidized soybean oil.
Preparing a crack pouring adhesive: heating 100g of 90# petroleum asphalt to 180 ℃ to completely flow, adding 25g of styrene-butadiene-styrene block copolymer and 8g of the prepared compatilizer, transferring the mixture into a high-speed shearing machine for treatment, wherein the shearing temperature is 180 ℃, the shearing time is 30min, then adding 0.85g of sulfur powder, continuing the shearing treatment, the shearing temperature is 180 ℃, the shearing time is 30min, transferring the mixture into a high-speed mixer for treatment, the mixing speed is 1000r/min, and the mixing time is 30min, thus obtaining the crack pouring sealant.
Example 3
Example 3 differs from example 1 in that 5g of the homemade modified terpene resin was added.
Preparation of modified terpene resin: adding 6.5g of beta-pinene and 3.5g of vinyl pyridine into toluene, adding 0.5g of anhydrous aluminum chloride after complete dissolution, heating to 70 ℃ for reaction for 5 hours, adding water after the reaction is finished to terminate the reaction, filtering, washing an organic phase to be neutral, and carrying out reduced pressure distillation to recover toluene to obtain the modified terpene resin.
Preparation of the compatilizer: firstly, 100g of epoxidized soybean oil is preheated to 55 ℃, 32g of 1-phenyl-5-hydroxypyrazole is added, 2.5g of 98% concentrated sulfuric acid is added dropwise, the mixture is heated to 85 ℃ for reaction for 5 hours, water is added for extraction after the reaction is finished, the unreacted epoxidized soybean oil is recovered by oil phase reduced pressure distillation, and the distillation residue is the modified epoxidized soybean oil.
Preparing a crack pouring adhesive: heating 100g of 90# petroleum asphalt to 180 ℃ to completely flow, adding 25g of styrene-butadiene-styrene block copolymer and 10g of the prepared compatilizer, transferring the mixture into a high-speed shearing machine for processing, wherein the shearing temperature is 180 ℃, the shearing time is 30min, then adding 0.85g of sulfur powder and 5g of the prepared modified terpene resin, continuing to shear, the shearing temperature is 180 ℃, the shearing time is 30min, transferring the mixture into a high-speed mixer for processing, the mixing speed is 1000r/min, and the mixing time is 30min, thus obtaining the crack pouring sealant.
Comparative example 1
Comparative example 1 differs from example 1 in that the modified epoxidized soybean oil is replaced by a reduced-trilinear draw-out oil as a compatibilizer.
Preparing a crack pouring adhesive: heating 100g of 90# petroleum asphalt to 180 ℃ to flow completely, adding 25g of styrene-butadiene-styrene block copolymer and 10g of three-line-reduction extract oil, transferring the mixture into a high-speed shearing machine for treatment, wherein the shearing temperature is 180 ℃, the shearing time is 30min, adding 0.85g of sulfur powder, continuing the shearing treatment, the shearing temperature is 180 ℃, the shearing time is 30min, transferring the mixture into a high-speed mixer for treatment, the mixing speed is 1000r/min, and the mixing time is 30min, so as to obtain the crack pouring sealant.
Comparative example 2
Comparative example 2 differs from example 3 in that the terpene resin replaces the home-made modified terpene resin.
Preparation of the compatilizer: firstly, 100g of epoxidized soybean oil is preheated to 55 ℃, 32g of 1-phenyl-5-hydroxypyrazole is added, 2.5g of 98% concentrated sulfuric acid is added dropwise, the mixture is heated to 85 ℃ for reaction for 5 hours, water is added for extraction after the reaction is finished, the unreacted epoxidized soybean oil is recovered by oil phase reduced pressure distillation, and the distillation residue is the modified epoxidized soybean oil.
Preparing a crack pouring adhesive: heating 100g of 90# petroleum asphalt to 180 ℃ to completely flow, adding 25g of styrene-butadiene-styrene block copolymer and 10g of the prepared compatilizer, transferring the mixture into a high-speed shearing machine for processing, wherein the shearing temperature is 180 ℃, the shearing time is 30min, then adding 0.85g of sulfur powder and 5g of terpene resin, continuing the shearing process, the shearing temperature is 180 ℃, the shearing time is 30min, finally transferring the mixture into a high-speed mixer for processing, the mixing speed is 1000r/min, and the mixing time is 30min, thus obtaining the crack pouring sealant.
The performance of the crack sealants prepared in the above examples and comparative examples was determined according to JT/T740-.
TABLE 1
| Item | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 |
| Softening point/. degree.C | 89 | 95 | 91 | 97 | 93 |
| Elastic recovery rate/%) | 66 | 62 | 68 | 57 | 60 |
| Penetration/0.1 mm | 82 | 71 | 78 | 62 | 75 |
| Flow value/mm | 1.51 | 0.73 | 1.14 | 0.45 | 0.96 |
| Stretching at a low temperature of-20 DEG C | By passing | By passing | By passing | By passing | By passing |
As can be seen from Table 1, the joint sealants prepared in examples 1-3 all meet the specification requirements of JT/T740-.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive is characterized by comprising the following components in parts by weight: the feed is prepared from the following raw materials in parts by weight:
100 parts of petroleum asphalt, 5-30 parts of styrene-butadiene-styrene block copolymer, 1-10 parts of compatilizer and 0.5-5 parts of stabilizer;
the compatilizer is modified epoxidized soybean oil, and the preparation method comprises the following steps: firstly, preheating epoxidized soybean oil, then adding 1-phenyl-5-hydroxypyrazole, dropwise adding concentrated sulfuric acid, heating for reaction, adding water for extraction after the reaction is finished, carrying out reduced pressure distillation on an oil phase to recover unreacted epoxidized soybean oil, and obtaining a distillation residue, namely the modified epoxidized soybean oil.
2. The high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive as claimed in claim 1, which is characterized in that: the mol ratio of the epoxidized soybean oil to the 1-phenyl-5-hydroxypyrazole is 100: 20-40.
3. The high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive as claimed in claim 1, which is characterized in that: the concentrated sulfuric acid is 98% concentrated sulfuric acid, and the dosage of the concentrated sulfuric acid is 1-5% of the total mass of the epoxidized soybean oil and the 1-phenyl-5-hydroxypyrazine.
4. The high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive as claimed in claim 1, which is characterized in that: the preheating temperature is 50-70 ℃.
5. The high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive as claimed in claim 1, which is characterized in that: the reaction temperature is 80-100 ℃.
6. The high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive as claimed in claim 1, which is characterized in that: the petroleum asphalt is at least one of 60# petroleum asphalt, 70# petroleum asphalt, 90# petroleum asphalt, 100# petroleum asphalt and 110# petroleum asphalt.
7. The high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive as claimed in claim 1, which is characterized in that: the stabilizer is one or a mixture of inorganic sulfur and organic sulfur.
8. The preparation method of the high-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive as claimed in any one of claims 1 to 7, is characterized by comprising the following steps: heating the petroleum asphalt until the petroleum asphalt completely flows, adding the styrene-butadiene-styrene block copolymer and the compatilizer, transferring the mixture into a high-speed shearing machine for treatment, adding the stabilizer, continuing the shearing treatment, and finally transferring the mixture into a high-speed mixer for treatment to obtain the crack pouring sealant.
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| CN202111312849.9A CN113956843A (en) | 2021-11-08 | 2021-11-08 | High-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive |
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| CN202111312849.9A CN113956843A (en) | 2021-11-08 | 2021-11-08 | High-elasticity-recovery-rate low-temperature-resistant asphalt pavement crack pouring adhesive |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114774079A (en) * | 2022-04-14 | 2022-07-22 | 鄂尔多斯市路泰公路工程有限责任公司 | High-viscosity high-strength pavement heating type sealant and preparation method thereof |
| CN115354446A (en) * | 2022-08-19 | 2022-11-18 | 吉祥三宝高科纺织有限公司 | Polylactic acid thermal insulating flocculus with high fluffiness and high resilience and preparation method thereof |
-
2021
- 2021-11-08 CN CN202111312849.9A patent/CN113956843A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114774079A (en) * | 2022-04-14 | 2022-07-22 | 鄂尔多斯市路泰公路工程有限责任公司 | High-viscosity high-strength pavement heating type sealant and preparation method thereof |
| CN114774079B (en) * | 2022-04-14 | 2023-11-14 | 鄂尔多斯市路泰公路工程有限责任公司 | High-viscosity high-strength pavement heating type sealant and preparation method thereof |
| CN115354446A (en) * | 2022-08-19 | 2022-11-18 | 吉祥三宝高科纺织有限公司 | Polylactic acid thermal insulating flocculus with high fluffiness and high resilience and preparation method thereof |
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Application publication date: 20220121 |