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Preparation method of SBS glue solution, star-shaped SBS prepared therefrom and application

A technology of glue and reaction, which is applied in the field of preparation of star-shaped SBS and SBS glue, can solve the problems that the strength, softening point and wear resistance of asphalt cannot be effectively improved, and the molecular weight is limited, so as to increase the softening point and improve the resistance Impact ability and crack resistance ability, the effect of improving ductility

Active Publication Date: 2020-03-17
广东众和高新科技股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the number of arms of the star-shaped SBS is 4, the increase of its molecular weight is limited, and when it is used for asphalt modification, it cannot effectively improve the strength, softening point and wear resistance of asphalt.

Method used

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  • Preparation method of SBS glue solution, star-shaped SBS prepared therefrom and application
  • Preparation method of SBS glue solution, star-shaped SBS prepared therefrom and application
  • Preparation method of SBS glue solution, star-shaped SBS prepared therefrom and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The invention provides a kind of preparation method of SBS glue, described preparation method comprises the following steps:

[0062] 1) Heat the reactor to 60°C, add 208g (2mol) of styrene, 1.3g (10mmol) of divinylbenzene, 4500g of n-hexane and 0.58g (8mmol) of tetrahydrofuran, mix at a stirring speed of 150rpm for 20min, add n-butyl Lithium 1.6g (25mmol), at a temperature of 60 ℃ with a stirring speed of 150rpm for 50min polymerization reaction, wherein, the molar ratio of styrene and divinylbenzene is 200:1, the molar ratio of styrene and n-butyllithium The ratio is 80:1, and the molar ratio of tetrahydrofuran to n-butyllithium is 0.32:1;

[0063] 2) Add 810 g (15 mol) of butadiene to the system after the polymerization reaction in step 1), and react for 40 minutes at a stirring speed of 150 rpm at a temperature of 65° C., wherein, butadiene and styrene described in step 1) The molar ratio is 7.5:1;

[0064] 3) Add 208g (2mol) of styrene to the system after the rea...

Embodiment 2

[0068] The invention provides a kind of preparation method of SBS glue, described preparation method comprises the following steps:

[0069] 1) Heat the reactor to 70°C, add styrene 208g (2mol), divinylbenzene 0.52g (4mmol), cyclohexane 4500g and tetrahydrofuran 0.36g (5mmol), mix at a stirring speed of 150rpm for 12min, add secondary Butyllithium 1.6g (25mmol), polymerized for 60min at a stirring speed of 150rpm at a temperature of 60°C, wherein the molar ratio of styrene to divinylbenzene was 500:1, and the ratio of styrene to sec-butyllithium The molar ratio is 80:1, and the molar ratio of tetrahydrofuran and sec-butyllithium is 0.2:1;

[0070] 2) Add 810 g (15 mol) of butadiene to the system after the polymerization reaction in step 1), and react for 50 minutes at a stirring speed of 120 rpm at a temperature of 70° C., wherein, butadiene and styrene described in step 1) The molar ratio is 7.5:1;

[0071] 3) Add 166.4 g (1.6 mol) of styrene to the system after the reactio...

Embodiment 3

[0075] The invention provides a kind of preparation method of SBS glue, described preparation method comprises the following steps:

[0076]1) Heat the reactor to 50°C, add 208g (2mol) of styrene, 1.3g (10mmol) of divinylbenzene, 3120g of n-hexane and 1.44g (0.02mol) of tetrahydrofuran, mix at a stirring speed of 100rpm for 15min, add iso Butyllithium 1.92g (30mmol), at the temperature of 50 ℃ with a stirring speed of 150rpm for 30min polymerization, wherein, the molar ratio of styrene and divinylbenzene is 200:1, styrene and isobutyllithium The molar ratio is 200:3, and the mol ratio of tetrahydrofuran and isobutyllithium is 2:3;

[0077] 2) Add 1080 g (20 mol) of butadiene to the system after the polymerization reaction in step 1), and react for 45 minutes at a stirring speed of 110 rpm at a temperature of 65° C., wherein, butadiene and styrene described in step 1) The molar ratio is 10:1;

[0078] 3) Add 249.6 g (2.4 mol) of styrene to the system after the reaction in ste...

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Abstract

The invention provides a preparation method of an SBS glue solution, star-shaped SBS prepared therefrom and application. The preparation method includes the steps of: 1) mixing styrene, divinyl benzene, a non-polar solvent and a polar additive, and adding an initiator to carry out polymerization reaction; 2) adding butadiene into the system obtained after the polymerization reaction in step 1), and carrying out reaction; 3) adding styrene into the system reacted in step 2), and carrying out reaction; and 4) adding Lewis base into the system reacted in step 3), carrying out reaction, and then adding an anti-aging agent to obtain the SBS glue solution. The SBS glue solution obtained by the preparation method disclosed by the invention contains star-shaped SBS, the star-shaped SBS has high tensile strength and elongation at break, and when applied to road modified asphalt, the star-shaped SBS can effectively improve the ductility of asphalt, also can improve the impact resistance and cracking resistance of the asphalt, also can further reduce the penetration index, and improve the softening point, abrasion resistance and rutting resistance of the asphalt.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a preparation method of SBS glue, a star-shaped SBS prepared therefrom and an application thereof. Background technique [0002] SBS is currently a thermoplastic elastomer with the largest output in the world and the most similar properties to rubber. SBS has the advantages of excellent tensile strength, large surface friction coefficient, and good low-temperature performance. It is widely used in shoemaking, plastic modification, asphalt modification, adhesives, cables, device parts and other fields. [0003] With the continuous development of my country's transportation industry, the construction scale of highway asphalt pavement is gradually expanding, especially the mileage of high-grade highway construction is increasing, and the demand for high-quality highway asphalt is increasing. At the same time, due to the rapid increase in traffic volume brought about by the developm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F297/04C08L95/00C08L53/02
CPCC08F297/044C08L95/00C08L53/02
Inventor 黎广贞郑岩舒畅廖伟超王平李才亮谢宝东苏杰万刘君李林峰柏木兰刘敏刘春茂吕文杰
Owner 广东众和高新科技股份公司
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