Polystyrene hybrid material modified asphalt and preparation method thereof

A technology of polystyrene and hybrid materials, applied in building insulation materials, building components, buildings, etc., can solve the problems of performance evaluation of modified asphalt mixture, insufficient explanation of road performance, lack of mixture test indicators, etc. Achieve the effects of improving high and low temperature performance, improving poor compatibility, and preventing serious aging of asphalt

Active Publication Date: 2015-12-09
SHANXI PROVINCIAL RES INST OF COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, none of these studies has comprehensively evaluated the performance of modified asphalt mixtures, and lacks specific test indicators for mixtures, such as rutting dynamic stability for high-temperature performance, and low-temperature failure modulus for low-temperature performance. Not enough to explain the quality of the actual road performance

Method used

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  • Polystyrene hybrid material modified asphalt and preparation method thereof

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Effect test

Embodiment 1

[0014] Polymerization of styrene monomer was initiated by n-butyllithium (1h, 45°C), co-hydrolyzed with tetraethyl orthosilicate (4.5h, 40°C), suction filtered and dried to obtain sample I; 15g of sample I was added to 80g In xylene, ultrasonically disperse at 25°C for 20min to obtain sample II; heat 500g of base asphalt (No. 90 heavy traffic asphalt) to 130°C, slowly add sample II, and shear and stir for 1h.

Embodiment 2

[0016] Polymerization of styrene monomer was initiated by n-butyllithium (1h, 50°C), co-hydrolyzed with ethyl orthosilicate (3.5h, 45°C), suction filtered and dried to obtain sample I; take 20g of sample I and add 150g In methanol, ultrasonically disperse at 25°C for 30 minutes to obtain sample II; heat 500g of base asphalt (No. 90 heavy traffic asphalt) to 110°C, slowly add sample II, and shear and stir for 1h.

Embodiment 3

[0018] Phenyllithium triggers the polymerization of styrene monomer (0.5h, 55°C), co-hydrolyzes with tetraethyl orthosilicate (4.5h, 45°C), suction filters and dries to obtain sample I; take 15g of sample I and add 90g In toluene, ultrasonically disperse at 25°C for 20 minutes to obtain sample II; heat 500g of base asphalt (No. 70 heavy traffic asphalt) to 120°C, slowly add sample II, and shear and stir for 1h.

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Abstract

The present invention belongs to the technical field of modified asphalt, and in particular relates to polystyrene hybrid material modified asphalt and a preparation method thereof. The polystyrene hybrid material is a polystyrene silica hybrid material, and on the basis of the weight of asphalt as a benchmark, the polystyrene hybrid material dopping content is 1-8wt%. Compared with the prior art, the polystyrene hybrid material modified asphalt has the following advantages: poor polystyrene and asphalt compatibility problem is improved, first the hybrid material is ultrasonically dispersed in a solvent, and subsequently mixed with asphalt, in the mixing process, the solvent is volatilized so as to ensure the modifying effect of the polystyrene hybrid material; in the modified asphalt preparation process, preparation temperature is low, and only is 100-130 DEG C, while the conventional polystyrene modified asphalt preparing temperature is about 180 DEG C, energy is saved, serious asphalt aging is prevented to ensure good performance of the modified asphalt; high and low temperature properties of the prepared asphalt mixture are improved significantly compared with an ordinary polystyrene modified asphalt mixture.

Description

technical field [0001] The invention belongs to the technical field of modified asphalt, and in particular relates to a polystyrene hybrid material modified asphalt and a preparation method thereof. Background technique [0002] The construction quality of high-grade highways involves many factors, among which the quality of construction materials plays a decisive role. Traditionally used ordinary asphalt can no longer meet the construction requirements of modern high-grade highways due to poor high and low temperature performance and poor temperature sensing performance. It is currently the most common practice to modify ordinary asphalt to improve its road performance. The production of polystyrene has sufficient raw materials and large output, and can be used as an asphalt modifier, thereby expanding the application range of polystyrene and enhancing its application value. However, the compatibility of polystyrene and asphalt is not good. When the amount of polystyrene i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L25/06C08K3/36
Inventor 庞瑾瑜郭赢赢薛君畅润田裴强杜素军
Owner SHANXI PROVINCIAL RES INST OF COMM
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