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Functionalized assembled LDHs/SBS composite material, and preparation method and application thereof

A composite material and functionalized technology, which is applied in building insulation materials, building components, buildings, etc., can solve the problems of general thermal and oxidative aging resistance and less aging and degradation problems of SBS, so as to inhibit agglomeration, improve long-term performance, and improve dispersion sexual effect

Active Publication Date: 2020-02-25
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although LDHs have good anti-ultraviolet aging ability, their performance in anti-thermal and oxidative aging is average.
On the other hand, at present, for the aging resistance of SBS modified asphalt, more attention is paid to the aging of asphalt, and relatively less attention is paid to the aging degradation of SBS

Method used

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  • Functionalized assembled LDHs/SBS composite material, and preparation method and application thereof
  • Functionalized assembled LDHs/SBS composite material, and preparation method and application thereof
  • Functionalized assembled LDHs/SBS composite material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Mix 24 parts (mass parts, the same below) of functionalized assembly modified LDHs, 70 parts of SBS, 0.5 parts of dibenzoyl peroxide, 0.5 parts of fatty acid zinc, and 5 parts of aliphatic hydrocarbon oil, and then add the mixture to The torque rheometer was kneaded at a high speed for 5 minutes at 120 °C; finally, the SBS composite kneaded by the torque rheometer was pulverized for 3 minutes by a high-speed pulverizer to obtain a functionally assembled LDHs / SBS composite material.

[0029] Heat 94.99 parts of asphalt to a fluid state, slowly add 5 parts of functionalized assembled LDHs / SBS composite materials and 0.01 part of sulfur to the asphalt under low-speed stirring, and melt blend for 60 minutes at 160 ° C and high shear rate 5000 rpm Finally, stop high-speed shearing and change to low-speed stirring for 90 min to prepare functionally assembled LDHs / SBS composite modified asphalt with excellent compatibility, stability, thermal oxygen and ultraviolet aging resist...

Embodiment 2

[0036] Mix 45 parts (mass parts, the same below) of functionalized assembly modified LDHs, 45 parts of SBS, 0.5 part of dibenzoyl peroxide, 0.5 part of fatty acid zinc, and 9 parts of aliphatic hydrocarbon oil, and then add the mixture to The torque rheometer was kneaded at a high speed for 5 minutes at 120 °C; finally, the SBS composite kneaded by the torque rheometer was pulverized for 3 minutes by a high-speed pulverizer to obtain a functionally assembled LDHs / SBS composite material.

[0037]Heat 84.95 parts of asphalt to a fluid state, slowly add 15 parts of functionalized LDHs / SBS composite materials and 0.05 parts of sulfur to the asphalt under low-speed stirring, and melt blend for 60 min at 160 °C and high shear rate of 5000 rpm Finally, stop high-speed shearing and change to low-speed stirring for 90 min to prepare functionally assembled LDHs / SBS composite modified asphalt with excellent compatibility, stability, thermal oxygen and ultraviolet aging resistance.

Embodiment 3

[0044] Mix 30 parts (mass parts, the same below) of functionalized assembly modified LDHs, 60 parts of SBS, 1 part of dibenzoyl peroxide, 1 part of fatty acid zinc, and 8 parts of aliphatic hydrocarbon oil, and then add the mixture to The torque rheometer was kneaded at a high speed for 5 minutes at 120 °C; finally, the SBS compound kneaded by the torque rheometer was pulverized for 3 minutes by a high-speed pulverizer, and the functionalized magnesium-aluminum-based layered double hydroxyl metal hydroxide ( LDHs) / SBS composites.

[0045] Heat 90 parts of asphalt to a flow state, slowly add 9.99 parts of functionalized LDHs / SBS composite material and 0.01 part of sulfur to the asphalt under low-speed stirring, and carry out melt blending at 160 °C and high shear rate of 5000 rpm for 60 min Finally, stop high-speed shearing and change to low-speed stirring for 90 min to prepare functionally assembled LDHs / SBS composite modified asphalt with excellent compatibility, stability, t...

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Abstract

The invention discloses a functionalized assembled LDHs / SBS composite material. The composite material is prepared by kneading functionalized assembled LDHs, SBS, an initiator, a dispersant and a softening agent at a high temperature through a torque rheometer, wherein the functionalized assembled LDHs are formed by jointly assembling intercalated modified LDHs serving as an anionic antioxidant active ingredient and intercalated modified LDHs with the surface organically modified with a surface modifier. The functionalized assembled LDHs / SBS composite material can be applied to modified asphalt, and the antioxidant is prevented from migrating to the surface in the asphalt through the laminate structure of LDHs, so that the long-acting property of the antioxidant is improved; specific organic functional groups are introduced into the surfaces of the LDHs to inhibit agglomeration of LDHs particles, so that the dispersity of the LDHs in the asphalt is improved, the LDHs can be physicallyand chemically reacted with SBS molecular chains, and the degradation resistance of the SBS and the dispersity and compatibility stability of the SBS in the asphalt are enhanced.

Description

technical field [0001] The invention belongs to the technical field of asphalt modification, and in particular relates to a functionalized assembled LDHs / SBS composite material and its preparation method and application. Background technique [0002] SBS modified asphalt is widely used in highway construction due to its excellent road performance (high temperature anti-rutting and low temperature anti-cracking performance). Especially with the continuous increase of traffic flow, the increasing size of vehicles and the phenomenon of overloading and overloading are becoming more and more common, ordinary asphalt materials can no longer meet the needs of modern transportation development, and the demand for SBS modified asphalt in modern highway construction is increasing. However, SBS modified asphalt is affected by the external environment during its service. Asphalt materials are prone to thermal oxygen and ultraviolet aging. At the same time, SBS is prone to aging and degr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/02C08L91/00C08K9/04C08K3/22C08K5/098C08L95/00
CPCC08L53/02C08L95/00C08L2201/08C08L2205/03C08L91/00C08K9/04C08K3/22C08K5/098
Inventor 章灿林汪婷胡昌斌徐松方雷何俊
Owner FUZHOU UNIV