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Warm mixed epoxy asphalt, mixture containing same and preparation method thereof

A technology of warm mix epoxy asphalt and epoxy asphalt, which is used in building thermal insulation materials, building components, climate change adaptation and other directions, can solve the problems of slow reaction speed, unstable properties of warm mix agents, lack of catalysts, etc. and construction temperature, improve Marshall stability, and be beneficial to environmental protection and construction.

Active Publication Date: 2017-12-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this patent solves the above-mentioned problems to a certain extent, in the process of preparing warm mixing agent, because the reaction temperature of the intermediate is low, and lacks catalyst, the reaction speed is slower, and the activity of the intermediate is lower, which affects the relationship between the intermediate and the intermediate. The degree of reaction and the depth of reaction of aromatic oil are not easy to control, and the properties of the obtained warm mix agent are unstable, which affects the application effect in asphalt
In addition, the preparation process of the warm mix agent is relatively complicated, and when the warm mix agent is used in asphalt, there is also the problem of poor anti-aging performance
[0017] In the process of producing epoxy asphalt mixture, the use of current warm mixing technology usually causes the viscosity or elongation of epoxy asphalt to decrease at 60°C, thus affecting the high temperature stability or low temperature cracking resistance of epoxy asphalt mixture
Therefore, it is urgent to develop an epoxy asphalt mixture, which can not only reduce the construction temperature and solve the problem of poor flexibility, but also solve the problems of high and low temperature performance and thermal aging resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) Preparation of warm mix agent

[0059] (1) Preparation and loading

[0060] Put water under the sweating dish plate; connect the sealing system of the sweating dish with the pressurized buffer tank and the compressor; install the decompression buffer tank at the lower part of the sweating dish and connect the vacuum pump; connect the jacket of the sweating dish and the movable coil with the circulation system Connect, fix the coil on the sweating dish; start the heating function of the circulation system with heat transfer oil as the medium, so that the temperature of the circulating oil will rise to 94°C.

[0061] The polyethylene wax by-produced by the high-density polyethylene plant of PetroChina Jilin Petrochemical Ethylene Plant is used as raw material (dropping melting point is 90.3°C; penetration at 25°C is 43 dmm; penetration at 55°C is >200 dmm; It can be seen that the polyethylene wax contains a large amount of low-melting point substances.), heated to 94...

Embodiment 2

[0080] (1) Preparation of warm mix agent

[0081] (1) Preparation and loading

[0082] Put water under the sweating dish plate. Connect the sealing system of the sweating dish with the pressurized buffer tank and the compressor; install the decompression buffer tank and connect the vacuum pump at the lower part of the sweating dish; connect the jacket of the sweating dish and the movable coil with the circulation system, and fix the coil in the On the sweating dish; using the heat transfer oil as the medium, start the heating function of the circulation system to raise the temperature of the circulation oil to 94°C.

[0083] Use the polyethylene wax by-produced by the high-density polyethylene plant of PetroChina Jilin Petrochemical Ethylene Plant as the raw material (the properties are the same as in Example 1), heat to 94°C and melt, then add dibenzoyl peroxide accounting for 0.03% of the weight of the raw material, and stir evenly Afterwards, add it to the sweating dish. ...

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Abstract

The invention discloses warm mixed epoxy asphalt. The product comprises a warm mixed asphalt, an epoxy resin composition and a curing agent. The warm mixed asphalt comprises a warm mixing agent and matrix asphalt. The warm mixing agent is prepared by performing a sweating process by taking a byproduct polyethylene wax as a raw material. In the sweating process, oil soluble organic matters capable of decomposed to generate gas are pre-added into the byproduct polyethylene wax raw material, and micro-bubbles are formed in a wax layer by means of gas generated by the byproduct polyethylene wax which is heated, so that a liquid component is quickly discharged and separated; meanwhile, in the sweating process, the liquid component is carried out through the wax layer by means of the air flow to separate the solid component from the liquid component in a forced manner, so that the low molecular weight components in the raw material are removed more effectively. The warm mixing agent used in the product not only can play a warm mixing role on the asphalt, but also can improve the thermal stability of the asphalt, improve the anti-thermal aging property, reduce the fusing temperature of the asphalt and the viscosity at the temperature, and reduce the generation amount of harmful gas.

Description

technical field [0001] The invention relates to asphalt, in particular to a warm-mixed epoxy asphalt and a preparation method thereof. Background technique [0002] With the continuous increase of highway mileage, the number of highway bridges also increases. However, some problems have also been exposed. Among them, the diseases caused by the failure of the waterproof adhesive layer between the pavement layers of the bridge deck and between the pavement layer and the panel account for a large proportion, which has caused the industry to criticize the bridge deck pavement materials. and craftsmanship. Epoxy asphalt obtained by adding epoxy resin to asphalt has a better effect as the bonding material between bridge decks. However, due to the high viscosity of epoxy asphalt, the construction temperature is required to be high during construction, and a certain operating time is required, so the construction difficulty is increased; in addition, after adding epoxy resin to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L23/06C08L63/00C08L81/04C08L61/00C08K7/12C08K7/14C04B26/26
CPCC04B26/26C08L95/00C08L2205/035C08L23/06C08L63/00C08L81/04C08K7/12C08L61/00C08K7/14C04B14/02Y02A30/30
Inventor 范思远孙剑锋陈保莲张志银张静宋乐春姚春雷宁爱民李志军程国香
Owner CHINA PETROLEUM & CHEM CORP
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