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A kind of polystyrene-b-polyisoprene/tackifying resin composite rubber particle and its preparation method and application

A polyisoprene and polystyrene technology, applied in building components, building insulation materials, buildings, etc., to achieve the effect of small elastic flow, low Tg, and good bonding performance

Active Publication Date: 2021-01-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, diblock polystyrene-b-polyisoprene (SI) has not been reported

Method used

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  • A kind of polystyrene-b-polyisoprene/tackifying resin composite rubber particle and its preparation method and application
  • A kind of polystyrene-b-polyisoprene/tackifying resin composite rubber particle and its preparation method and application
  • A kind of polystyrene-b-polyisoprene/tackifying resin composite rubber particle and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Add 3500 mL of cyclohexane solution with a mass fraction of 10% n-hexane in a 5-liter polymerization kettle under nitrogen protection, then add 0.08 mL of anisole, and heat the solvent in the polymerization kettle to 50-60 °C with a hot water bath. After ℃, add 50g of styrene into the polymerization kettle and start stirring, then inject 8.5mL of 0.5mol / L n-butyllithium into the polymerization kettle with a syringe, and react for 20-25min; then add 366g of isoprene, After reacting at 50-90°C for 25 minutes; the measured polymer (S-I) number average molecular weight Mn=98700, wherein the number average molecular weight of block polystyrene Mn(s)=12700, the isoprene segment in the polymer is 1, The 4-adduct content is 85.6%, and the 3,4-adduct content is 14.4%.

Embodiment 2

[0055] The relevant conditions in Example 1 were kept unchanged, except that the amount of n-butyllithium was selected as 9.0 mL, anisole was 0.05 mL, and the amount of isoprene was 334 g. Results The number average molecular weight of the synthesized polymer (S-I) was Mn=93300, among which the number average molecular weight of block polystyrene was Mn(s)=11400, and the content of isoprene block 1,4-adduct in the polymer was 88.5 %, 3,4-adducts 11.5%.

Embodiment 3

[0057] The relevant conditions in Example 1 are kept unchanged, only the amount of n-butyllithium is selected as 9.5 mL, anisole is 0.05 mL, and the amount of isoprene is 307 g. Results The number average molecular weight of the synthesized polymer (S-I) Mn = 85400, the number average molecular weight of block polystyrene Mn (s) = 10600, the content of 1,4-adduct of isoprene segment in the polymer is 88.6 %, 3,4-adducts 11.4%.

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Abstract

The invention discloses a polystyrene-b-polyisoprene / tackifying resin composite rubber particle and a preparation method and application thereof. The composite rubber particle comprises polystyrene-b-polyisoprene and tackifying resin components. The preparation method includes: preparing polystyrene-b-polyisoprene sol in an anionic polymerization system, adding tackifying resin into the sol, dissolving, mixing and performing condensation, solvent removal and granulation to obtain the polystyrene-b-polyisoprene / tackifying resin composite rubber particle. The composite rubber particle is free ofcold flow and adhesion at the room temperature and has a great self-adhesion performance under the action of rubber oil, and the tackifying resin composite rubber particle is great in resistance to high and low temperatures and excellent in sand and concrete surface adhesion performance in high-wax high-softening-point asphalt modification, is also high in water resistance and ductility and realizes expansion of high-wax asphalt application.

Description

technical field [0001] The invention relates to a polystyrene-b-polyisoprene / tackifying resin composite rubber particle and a preparation method of the composite rubber particle, in particular to polystyrene-b-polyisoprene / tackifying resin The composite rubber particles are used in modified viscosifying building asphalt materials, and belong to the field of polymer synthesis and modified asphalt. Background technique [0002] Many changes have taken place in modern roads and roads, which require improving the flow resistance of the pavement, that is, the ability to resist rutting at high temperatures; improve flexibility and elasticity, and the ability to resist cracking at low temperatures; improve wear resistance and prolong service life. Modern buildings generally use long-span prestressed roof panels, requiring roof waterproof materials to adapt to large displacements, more resistant to harsh high and low temperature climate conditions, better durability, self-adhesive, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L53/00C08L45/00C08L61/02C08L61/14C08L61/06C08L45/02C08L95/00C08L53/02C08L91/00C08K13/02C08K3/26C08K3/34C08K5/134
Inventor 张建国佘振银李蓓蕾蒋文英
Owner CHINA PETROLEUM & CHEM CORP
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