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Chemical reaction type sbs modified asphalt heat storage stabilizer and preparation method thereof

A thermal storage stabilizer, chemical reaction type technology, applied in chemical instruments and methods, preparation of organic compounds, preparation of aminohydroxy compounds, etc., to achieve long-term thermal storage stability, ensure thermal storage stability, improve aging resistance and The effect of high and low temperature pavement performance

Inactive Publication Date: 2017-03-22
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the current chemical reaction type SBS modified asphalt heat storage stabilizer, the present invention provides a chemical reaction type SBS modified asphalt heat storage stabilizer and its preparation method, which can not only make SBS modified asphalt have long-term heat storage stability, and can significantly improve the aging resistance and road traffic performance of SBS modified asphalt

Method used

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  • Chemical reaction type sbs modified asphalt heat storage stabilizer and preparation method thereof
  • Chemical reaction type sbs modified asphalt heat storage stabilizer and preparation method thereof
  • Chemical reaction type sbs modified asphalt heat storage stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of stabilizer

[0036] Add 21.3g (0.1mol) of dodecyldimethyl tertiary amine and 30.0g of methanol into the reaction vessel, add 11.0g (0.11mol) of 98% sulfuric acid under stirring, mix well, heat up to 45°C, drop Add 10.2g (0.11mol) of epichlorohydrin, control the rate of addition so that the reaction temperature is always below 55°C, stir and react at 45-55°C for 5 hours, then add 16.1g (0.11mol) of triethylenetetramine, After stirring and reacting for 6 hours, add 9.2g (0.12mol) 3-chloropropene, 25.5g (0.2mol) benzyl chloride, stir and react at 70-75°C for 6 hours, distill methanol, transfer the reaction product while it is hot, and dry it After crushing to more than 300 mesh, the stabilizer product is obtained.

[0037] Preparation of modified asphalt 500.0g brand is SK-70 # Heat the petroleum asphalt to 160°C, add 20.0g of star-shaped SBS and 5.0g of the above stabilizer, shear at this temperature for 30 minutes at a low speed, then heat up to 180°C, a...

Embodiment 2

[0041] Preparation of stabilizer

[0042] Add 24.1g (0.1mol) tetradecyldimethyl tertiary amine and 30.0g ethanol into the reaction vessel, add 11.2g (0.11mol) 36% hydrochloric acid under stirring, after mixing uniformly, heat up to 50°C, drop Add 11.1g (0.12mol) of epichlorohydrin, control the rate of addition to keep the reaction temperature at 50-55°C, stir and react at this temperature for 5.5h, then add 11.3g (0.11mol) of diethylenetriamine, at 75-80 After stirring and reacting for 6 hours at ℃, add 10.0g (0.11mol) 3-chloro-1-butene and 17.6g (0.12mol) p-methoxybenzyl chloride, stir and react at 70-75℃ for 6 hours, then distill off ethanol, Transfer the reaction product while it is hot, dry it and crush it to a size larger than 300 mesh to obtain the stabilizer product.

[0043] Preparation of SBS Modified Asphalt

[0044] Same example 1

[0045] Performance test of SBS modified asphalt

[0046] The results of the same example 1 are shown in Table 2

Embodiment 3

[0048] Preparation of stabilizer

[0049] Add 29.7g (0.1mol) of octadecyldimethyl tertiary amine and 40.0g of isopropanol into the reaction vessel, add 11.2g (0.11mol) of 36% hydrochloric acid under stirring, stir and mix well, then heat up to 50 ℃, add 11.1g (0.12mol) epichlorohydrin dropwise, control the rate of addition to keep the reaction temperature at 55-60℃, and stir the reaction at this temperature for 6h, then add 6.6g (0.11mol) ethylenediamine, and heat up to 70~75°C, after stirring and reacting at this temperature for 6h, add 8.4g (0.11mol) 3-chloropropene, 7.6g (0.06mol) benzyl chloride and 9.0g (0.11mol) chloroethanol, at 80~85°C After stirring and reacting for 6 hours, the isopropanol was evaporated, the product was transferred while it was hot, dried and crushed to a size larger than 300 mesh to obtain the stabilizer product.

[0050] Preparation of SBS Modified Asphalt

[0051] Same example 1

[0052] Performance test of SBS modified asphalt

[0053] The res...

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Abstract

The invention relates to a chemical reaction type SBS modified asphalt thermal storage stabilizer and a preparation method thereof. The preparation method comprises the following steps: adding dimethyl tertiary amine containing one long-chain alkyl, a catalyst and epoxy chloropropane into a reaction container; adding an alcohol solvent; stirring and reacting to obtain a quaternary ammonium salt midbody solution; adding polyethylene polyamine into the quaternary ammonium salt midbody solution, stirring and reacting to obtain a polyethylene polyamine midbody; and adding chloroalkene, aryl chloride and fatty alcohol chloride into the polyethylene polyamine midbody solution, stirring and reacting to obtain the chemical reaction type SBS modified asphalt thermal storage stabilizer. The chemical reaction type SBS modified asphalt thermal storage stabilizer disclosed by the invention is good in adaptability to matrix asphalts different in producing area and model number, is lasting in thermal storage stability and capable of remarkably improving the ageing resistance and high and low-temperature road surface usability of SBS modified asphalt and improving the usability of an SBS modified asphalt road surface.

Description

technical field [0001] The invention relates to a chemical reaction type SBS modified asphalt thermal storage stabilizer and a preparation method thereof, belonging to the field of fine organic chemicals. Background technique [0002] With the rapid development of the transportation industry, the load capacity of vehicles continues to increase, and the performance requirements for asphalt materials used in road traffic are also getting higher and higher. The performance of matrix asphalt can no longer meet the requirements of high-grade highways. Asphalt modified Technology came into being. The use of polymer modified asphalt can significantly improve the performance of asphalt pavement. At present, there are many kinds of polymer modifiers and modification methods, and the most widely used one is SBS modified asphalt. SBS can make the modified asphalt have the advantages of high softening point, no softening at higher temperature, no brittleness at low temperature, and go...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K5/19C07C215/40C07C217/58C07C213/08C08L95/00C08L53/02
Inventor 庞金兴张柯汤咪靳素荣
Owner WUHAN UNIV OF TECH
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