SBS modified asphalt stabilizer, and preparation method and application thereof

A technology of modified asphalt and stabilizer, used in building components, building insulation materials, buildings, etc., can solve the problems of low ductility, poor anti-aging ability, etc., to improve thermal storage stability, increase ductility after aging and The effect of anti-aging ability

Inactive Publication Date: 2018-01-09
CHAMBROAD CHEM IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

SBS modified asphalt is made by mixing asphalt, SBS modifier and stabilizer. It has excellent high temperature resistance, low temperature resistance and anti-rutting ability, which can significantly improve the water stability of asphalt, improve the anti-skid ability of the road surface, and strengthen the road surface. Bearing capacity, but the existing SBS modified asphalt has low ductility after aging and poor aging resistance

Method used

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  • SBS modified asphalt stabilizer, and preparation method and application thereof
  • SBS modified asphalt stabilizer, and preparation method and application thereof
  • SBS modified asphalt stabilizer, and preparation method and application thereof

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preparation example Construction

[0031] The present invention also provides a kind of preparation method of SBS modified asphalt stabilizer, comprises the following steps:

[0032] Mixing 60-65 parts by weight of sulfur, 2-5 parts by weight of phosphoric acid ester, 6-10 parts by weight of activator and 20-32 parts by weight of dispersant to obtain the SBS modified asphalt stabilizer;

[0033] The activator includes divalent metal oxide and / or divalent metal chloride; the dispersant includes one or more of rock bitumen, rubber powder and carbon black.

[0034] In the preparation method provided by the present invention, sulfur, phosphoric acid ester, activator and dispersant are mixed evenly in proportion to obtain the SBS modified asphalt stabilizer provided by the present invention. In the present invention, it is preferred to firstly mix the sulfur, phosphoric acid ester and dispersant evenly, then sieve the mixed mixture and then mix it with the activator to obtain the SBS modified asphalt stabilizer. Am...

Embodiment 1

[0043] 1) prepare stabilizer:

[0044]Take by weighing 60 parts by weight of sulfur (fineness > 200 mesh), 30 parts by weight of rock pitch (fineness > 200 mesh), 8 parts by weight of zinc oxide, and 2 parts by weight of triisopropylphenyl phosphate; Rock asphalt and triisopropylphenyl phosphate are mixed uniformly by a mixer, then passed through a 200-mesh sieve, and then zinc oxide is added and mixed uniformly to obtain an SBS modified asphalt stabilizer.

[0045] 2) Preparation of SBS modified asphalt:

[0046] Weigh 500g of No. 70 A-grade road asphalt, heat it to 175-180°C, put in 23g of SBS modifier (brand YH-791), shear at high speed for 30min, then put in 1g of the above-mentioned stabilizer, and continue stirring for 3h. Obtain SBS modified asphalt. Measure each index of described SBS modified asphalt, as shown in table 1:

[0047] The indicators of the SBS modified asphalt prepared in Table 1 Example 1

[0048]

[0049]

Embodiment 2

[0051] 1) prepare stabilizer:

[0052] Take by weighing 60 parts by weight of sulfur (fineness > 200 orders), 30 parts by weight of carbon black (fineness > 200 orders), 8 parts by weight of ferrous chloride, 2 parts by weight of triisopropylphenyl phosphate; Sulfur, carbon black and triisopropylphenyl phosphate are mixed uniformly through a mixer, then passed through a 200-mesh sieve, and then ferrous chloride is added and mixed uniformly to obtain a SBS modified asphalt stabilizer.

[0053] 2) Preparation of SBS modified asphalt:

[0054] Weigh 500g of No. 70 A-grade road asphalt, heat it to 175-180°C, put in 21g of SBS modifier (brand 4303), shear at high speed for 30min, then put in 1.1g of the above-mentioned stabilizer, and continue stirring for 3h to obtain SBS modified asphalt. Measure each index of described SBS modified asphalt, as shown in table 2:

[0055] The indicators of the SBS modified asphalt prepared in the embodiment 2 of table 2

[0056]

[0057] ...

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Abstract

The invention belongs to the technical field of SBS modified asphalt additives and particularly relates to an SBS modified asphalt stabilizer, and a preparation method and an application thereof. Thestabilizer provided by the invention comprises the following components in parts by weight: 60-65 parts of sulfur, 2-5 parts of phosphate, 6-10 parts of an activator and 20-32 parts of a dispersant, wherein the activator comprises a divalent metal oxide and/or a divalent metal chloride; and the dispersant comprises one or more of rock asphalt, rubber powder and carbon block. By optimized selectionof a formula of the SBS modified asphalt stabilizer, the after-ageing ductility and the anti-ageing ability of the SBS modified asphalt are enhanced obviously while the heat storage stability of theSBS modified asphalt is improved.

Description

technical field [0001] The invention belongs to the technical field of SBS modified asphalt additives, in particular to an SBS modified asphalt stabilizer and its preparation method and application. Background technique [0002] As one of the main materials for building high-grade pavements, asphalt has been widely used. Asphalt pavement has a series of advantages, such as certain elasticity and plasticity, which can adapt to the force of vehicles on the road surface; it has enough friction with car tires, which can reduce the sliding of cars, especially in rainy days, and increase the safety of driving. In addition, asphalt pavement also has the characteristics of shock absorption, no dust, easy cleaning, and easy maintenance. Therefore, most of the high-grade pavements in the world use asphalt pavement. However, asphalt pavement also has its fatal weaknesses. For example, in summer in high temperature areas, when there is a large traffic flow, rutting, wave shifting, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K3/06C08K5/523C08K3/22C08K3/04C08K13/02C08K3/16
Inventor 张红娟马韵升祁聪丁雪梅牛海波
Owner CHAMBROAD CHEM IND RES INST CO LTD
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