Bio-based non-viscous wheel tack coat and preparation method thereof

A non-stick wheel and sticky layer oil technology, applied in the direction of adhesives, adhesive types, asphalt material adhesives, etc., can solve problems such as prolonging the emulsified asphalt demulsification time, loss of adhesive layer materials, and reduced bonding effect , to achieve important application value and economic benefits, improve adhesion, low-temperature viscosity effect

Active Publication Date: 2017-08-22
SHANXI PROVINCIAL RES INST OF COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the traditional emulsified asphalt for viscous oil is prepared from a softer base asphalt, so even if it has completely broken into a film after construction, it is still easy to stick to the tires that generate heat on asphalt paver and other road construction equipment, resulting in Loss of bondline material, reducing bond effectiveness
Therefore, at this stage, researchers have used emulsified hard asphalt as sticky layer oil, which solves the problem of sticking wheels and can avoid the loss of sticky layer materials, but the following problems still exist in the process of preparation and use: hard asphalt Under normal emulsification temperature conditions, the viscosity is high, the emulsification is difficult, and the stability of the formed emulsion is poor. The researchers solved it by adding a higher emulsifier content, but too high emulsifier content not only increases the cost, but also greatly prolongs the emulsified asphalt. Emulsion breaking time, which is contrary to the requirement of opening traffic quickly

Method used

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  • Bio-based non-viscous wheel tack coat and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0020] Preparation of modified bio-asphalt: Mix hard asphalt with a penetration of 10dmm and corn stalk biomass heavy oil at 130°C and 5000r / min shear conditions for 30min to obtain bio-asphalt; bio-asphalt, phenolic epoxy resin F -44. Nano-silica (particle size: 15nm, specific surface area: 300m / g) is sheared uniformly at 110°C to obtain modified bio-asphalt. Among them, the mass ratio of 10dmm hard asphalt, corn stalk biomass heavy oil, phenolic epoxy resin F-44, and nano-silica is 100:15:5:1.

[0021] Preparation of special emulsifier: (1) Add 50g of concentrated sulfuric acid, a sulfonating agent, dropwise to 100g of oleic acid at 45°C, and react for 4 hours to obtain sulfonated oleic acid; (2) Mix the above sulfonated oleic acid with 53g of 1,3 -Propylenediamine in N 2 Under protection, react at 160°C for 4 hours; finally, cool down to 80°C, add 120g of solvent ethylene glycol, and then dropwise add 90g of dimethyl sulfate for 2h to obtain a special asphalt emulsifier. ...

Embodiment 2

[0025] Preparation of modified bio-asphalt: Mix hard asphalt with a penetration of 30dmm and pig manure biomass heavy oil at 120°C and 3000r / min shear conditions for 20min to obtain bio-asphalt; bio-asphalt, novolac epoxy resin F -51. Nano silica (particle size: 50nm, specific surface area: 150m / g) is sheared uniformly at 120°C to obtain modified bio-asphalt. Among them, the mass ratio of 30dmm hard asphalt, pig manure biomass heavy oil, phenolic epoxy resin F-51, and nano-silica is 100:10:7.5:2.

[0026] Preparation of special emulsifier: (1) Add 80 g of oleum, a sulfonating agent, dropwise to 100 g of oleic acid at 35°C, and react for 6 hours to obtain sulfonated oleic acid; (2) Mix the above sulfonated oleic acid with 63 g of 1, 4-Butanediamine in N 2 Under protection, react at 170°C for 3.5 hours; finally, cool down to 85°C, add 130g of solvent propylene glycol, and then dropwise add 98g of dimethyl sulfate for 3h to obtain a special asphalt emulsifier.

[0027] Preparat...

Embodiment 3

[0030] Preparation of modified bio-asphalt: Mix hard asphalt with a penetration of 50dmm and corn stalk biomass heavy oil at 125°C and 4000r / min shear conditions for 25min to obtain bio-asphalt; bio-asphalt, bisphenol F-ring Oxygen resin and nano-silica (with a particle size of 30nm and a specific surface area of ​​200m / g) were sheared uniformly at 115°C to obtain modified bio-asphalt. Among them, the mass ratio of 50dmm hard asphalt, corn stalk biomass heavy oil, bisphenol F epoxy resin and nano silicon dioxide is 100:5:10:2.5.

[0031] Preparation of special emulsifier: (1) Add 60g of sulfur trioxide, a sulfonating agent, dropwise to 100g of oleic acid at 40°C, and react for 5 hours to obtain sulfonated oleic acid; (2) Mix the above sulfonated oleic acid with 73g of 1, 5-Pentanediamine in N 2Under protection, react at 180°C for 3 hours; finally, cool down to 90°C, add 140g of solvent diethylene glycol, and then dropwise add 94g of dimethyl sulfate for 2.5h to obtain a speci...

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Abstract

The invention belongs to the technical field of emulsified asphalt and relates to a bio-based non-viscous wheel tack coat and a preparation method thereof. The method comprises the preparation steps of mixing hard asphalt with biomass heavy oil under the shear conditions of 120-130 DEG C and 3,000-5,000r/min according to ratio for 20-30min to obtain biological asphalt; shearing the biological asphalt, epoxy resin and nano silicon dioxide at 110-120 DEG C evenly to obtain modified biological asphalt; and preparing the bio-based non-viscous wheel tack coat from the modified biological asphalt at 130-140 DEG C and an emulsifier solution at 50-60 DEG C through a colloid mill according to the ratio. Compared with the prior art, the tack coat prepared through the method is high in emulsifying speed, non-viscous to a wheel, and not easy to fall off, enough interlayer bonding strength can be provided, the interlayer disease generated by interlayer shear force of an asphalt pavement is effectively improved, and the bio-based non-viscous wheel tack coat is low in cost and has important application value and economic benefit.

Description

technical field [0001] The invention belongs to the technical field of emulsified asphalt, in particular to a bio-based non-stick wheel tack oil and a preparation method thereof. Background technique [0002] The sticky layer is a thin layer of asphalt material that is sprinkled to strengthen the bonding effect between the layers in the asphalt pavement structure. Its function is to make the layers of the asphalt pavement, the new asphalt layer and the old asphalt pavement approximately bonded into a whole. When the asphalt pavement is repeatedly acted by the vertical and horizontal loads caused by the vehicle load, the bonding material can resist various stresses generated inside the pavement structure, especially the shear force between layers, which can ensure that the asphalt There will be no damage such as slippage between the pavement layers, thereby ensuring the excellent road performance of the asphalt pavement and prolonging its service life. [0003] At present, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J195/00C09J11/04C09J11/08
CPCC08K2201/003C08K2201/006C08K2201/011C08L2205/03C09J11/04C09J11/08C09J195/005C08L91/00C08L63/04C08K3/36C08L63/00
Inventor 裴强杜素军庞瑾瑜薛君畅润田郭赢赢
Owner SHANXI PROVINCIAL RES INST OF COMM
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