Asphalt anti-stripping agent as well as preparation method and application thereof

An anti-stripping agent and anti-stripping technology, which is applied in building components, building insulation materials, buildings, etc., to achieve the effects of high viscosity and flexibility, good polarity and anti-aging performance, and good high temperature peeling performance.

Active Publication Date: 2022-05-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no anti-stripping agent developed specifically for the stripping of asphalt concrete aggregates caused by the high-temperature wake of jet aircraft on airport runways

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The SBR with a bound styrene content of 26wt% was pulverized in advance, with a particle size of 5-18mm, and set aside. Warm up the kneader and set aside.

[0044] Weigh 15 kg of crushed SBR, 11 kg of triphenylmethane triisocyanate, 11 kg of N,N'-diphenyl-p-phenylenediamine, and 11 kg of silane coupling agent (KH560) and place them in a kneader for mixing. The temperature is 155°C, and the mixing time is 65 minutes; then extruded to granulate, and the extrusion temperature is 155°C. Cut into granules with a particle size of 2 mm to obtain the anti-stripping agent. The distribution ratio of each group is shown in Table 1.

Embodiment 2

[0046] The SBR with a combined styrene content of 45wt% was pulverized in advance, with a particle size of 5-19mm, and set aside. Warm up the kneader and set aside.

[0047]Weigh 100 kg of pulverized SBR, 60 kg of triphenylmethane triisocyanate, 50 kg of N-cyclohexyl-N'-phenyl-p-phenylenediamine, and 40 kg of aluminate coupling agent and place them in a kneader for mixing. The mixing temperature is 190°C, and the mixing time is 120 minutes; then extrusion granulation, the extrusion temperature is 180°C. Cut into granules with a particle size of 3 mm to obtain the anti-stripping agent. The distribution ratio of each group is shown in Table 1.

Embodiment 3

[0049] The SBR with a bound styrene content of 39wt% was pulverized in advance, with a particle size of 5-17 mm, and set aside. Warm up the kneader and set aside.

[0050] Weigh 80 kg of pulverized SBR, 48 kg of triphenylmethane triisocyanate, 37 kg of N-phenyl-N'-isopropyl-p-phenylenediamine, and 28 kg of titanate coupling agent and place them in a kneader for mixing. kneading, the kneading temperature is 180°C, and the kneading time is 110min; then extrusion granulation, the extrusion temperature is 175°C. Cut into granules with a particle size of 4 mm to obtain the anti-stripping agent. The distribution ratio of each group is shown in Table 1.

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Abstract

The invention discloses an asphalt anti-stripping agent as well as a preparation method and application thereof. The asphalt anti-stripping agent comprises the following raw materials: butadiene styrene rubber, triphenylmethane triisocyanate, a p-phenylenediamine compound and a coupling agent. The preparation method of the asphalt anti-stripping agent comprises the following steps: uniformly mixing the materials, mixing and granulating to obtain the asphalt anti-stripping agent. The asphalt anti-stripping agent disclosed by the invention is granular, is used in airport asphalt, can remarkably improve the adhesion strength of the asphalt and improve the anti-stripping performance, and has relatively strong adaptive capacity to a high-temperature wake flow environment of an airplane.

Description

technical field [0001] The invention belongs to the field of petroleum industry and basic material chemistry, in particular to an asphalt anti-stripping agent and a preparation method thereof, and is especially suitable for airport asphalt runways. Background technique [0002] The highest temperature of the airflow ejected by modern jet aircraft engines can reach 850°C-900°C, and the airflow speed can reach 180m / s, which spreads to the airport runway in an elliptical shape, and the surface temperature of the road surface rises rapidly, causing damage to the asphalt pavement . The measured data shows that when the summer temperature is 40°C, the maximum temperature of the asphalt pavement reaches 140°C due to the influence of the high-temperature wake of the aircraft. Therefore, in order to avoid damage to the pavement, anti-blow pads are installed at the ends of the runways of civil airports to provide sufficient preparation time for aircraft during takeoff. However, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L9/06C08K5/29C08K5/18C08K5/5435C08K5/10
CPCC08L95/00C08K5/29C08K5/18C08K5/5435C08K5/10C08L2201/08C08L9/06Y02A30/30
Inventor 李臣泽陈保莲宋乐春范思远陈杰王兴越宁爱民程国香李志军王珂琦
Owner CHINA PETROLEUM & CHEM CORP
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