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Oil-resistant road asphalt modifier and preparation method thereof

A technology of road asphalt and modifier, applied in building components, building insulation materials, construction and other directions, can solve the problems of increasing the emission of harmful gases such as smoke, high viscosity of oil-resistant modified asphalt, high mixing and construction temperature, etc. Achieve the effect of improving aging resistance and performance, good compatibility, and reducing hot mixing temperature

Active Publication Date: 2012-05-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the oil-resistant modified asphalt is that the processing temperature is high and the process is complicated. In particular, the oil-resistant modified asphalt has a high viscosity, which requires high mixing and construction temperatures, which increases the emission of harmful gases such as smog. Conducive to environmental protection

Method used

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  • Oil-resistant road asphalt modifier and preparation method thereof
  • Oil-resistant road asphalt modifier and preparation method thereof
  • Oil-resistant road asphalt modifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The oil-resistant road asphalt modifier is prepared according to the ratio of parts by weight in Table 2. The solid materials are pre-mixed uniformly in proportion and added to the feed hopper of the twin-screw extruder. The feed port is used for strand granulation at an extrusion temperature of 170°C.

[0023] Select asphalt with a needle penetration of 92 1 / 10mm and a softening point of 46.2°C as the base asphalt. Take 100 parts of the base asphalt in a molten state, add 10 parts of the modifier in Example 1, and then add 0.18 parts of the cross-linking agent sulfur sublimation to maintain Stir at 160°C for 60 minutes at 400rpm / min to prepare an oil-resistant asphalt pavement material, the properties of which are shown in Table 2. According to the "Test Regulations for Asphalt and Asphalt Mixtures in Highway Engineering" JTJ052-2000 of the Ministry of Communications, the asphalt pavement material is used as the binder, and the asphalt mixture standard Marshall test pi...

Embodiment 2

[0025] According to the asphalt pavement material prepared by the method of Example 1, the difference is that the modifying agent is an example 2 modifying agent, and the crosslinking agent sulfur is sublimated to 0.15 parts, and its properties are shown in Table 2. # After soaking in aviation kerosene for 24 hours, the oil resistance results are shown in Table 2.

Embodiment 3

[0027] The asphalt pavement material was prepared according to the method of Example 1, except that the modifier was different. Example 3 was the modifier, and the sulfur sublimation of the crosslinking agent was 0.13 parts, and its properties were shown in Table 2. The mixture specimen was heated at 30°C for 3 # After soaking in aviation kerosene for 24 hours, the oil resistance results are shown in Table 2.

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Abstract

The invention discloses an oil-resistant road asphalt modifier and a preparation method thereof. The oil-resistant road asphalt modifier comprises the following components in parts by weight: 20-50 parts of styrene-ethylene / butylene-styrene segmented copolymer (SEBS), 10-30 parts of polyolefin resin, 15-45 parts of polymer wax and 10-30 parts of extract oil with rich aromatics by weight. The preparation method comprises the following steps of: feeding the materials in proportion to a dual-screw extruder to stretch and granulate, extruding at a temperature of 120-200 DEG C and preparing the oil-resistant road asphalt modifier. With adoption of the modifier disclosed by the invention, the anti-aging performance, the high-temperature usability and the oil resistance can be remarkably improved while the production process for the oil-resistant road asphalt modifier can be simplified; moreover, the modifier can be used for lowering hot mixing and construction temperature of the asphalt mixture, reducing energy consumption, reducing the discharging of harmful gases such as smog and reducing pollution to the environment.

Description

technical field [0001] The invention relates to an asphalt modifier and a preparation method thereof, in particular to an oil-resistant road asphalt modifier and a preparation method thereof. Background technique [0002] Asphalt material is used as a binder in the mixture of road paving. In order to meet the increasing demand of road construction, asphalt material not only has good viscoelasticity, plasticity and adhesion, but also often needs to meet the requirements of fuel (gasoline, diesel oil) , kerosene) and oil products (lubricating oil, engine oil, etc.) dissolution and erosion capabilities. Especially in airports, waste disposal sites, gas stations, oil tank farms and other places where the road surface is often exposed to spilled fuel and oil, asphalt will be dissolved and leached out of the mixture, making the asphalt pavement soft and bone The cohesion between the materials decreases, the pavement structure becomes loose, and finally the leached asphalt is lost...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L23/06C08L91/06C08L95/00C08K5/01
Inventor 陈杰万淼宣根海徐青柏石君章
Owner CHINA PETROLEUM & CHEM CORP
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