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High-storage-stability rubber asphalt and preparation method thereof

A technology for storage stability and rubber asphalt, which is applied in building components, building insulation materials, construction, etc., can solve the problems of poor high temperature storage stability and poor comprehensive road performance of rubber asphalt, and achieves easy preparation, better stability, Comprehensive road performance better effect

Active Publication Date: 2021-02-26
北京路德永泰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention intends to provide a rubber asphalt with high storage stability and its preparation method to solve the problems of poor high-temperature storage stability and poor comprehensive road performance of rubber asphalt in the prior art

Method used

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  • High-storage-stability rubber asphalt and preparation method thereof
  • High-storage-stability rubber asphalt and preparation method thereof
  • High-storage-stability rubber asphalt and preparation method thereof

Examples

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preparation example Construction

[0048] The preparation method of the interface modifier used in this embodiment comprises the following steps:

[0049] In step 1, the SBS is crushed and sieved, and the SBS powder with a particle size of 40-120 mesh is selected for use.

[0050] Step 2: put the EVA and crushed SBS powder into the hopper of the extruder according to the metering, mix and melt them at a temperature of 140-190°C, and introduce them into the second-stage extruder.

[0051] Step 2: put rubber cross-linking agent and carbon black into the two-stage extruder according to metering, mix and melt at a temperature of 140-190° C., extrude, cool, and pelletize to form an interface modifier.

[0052] The preparation method of high storage stability rubber asphalt comprises the following steps:

[0053] Step 1, material mixing

[0054] Weigh 10kg of petroleum asphalt and put it into mixing tank A, and heat the petroleum asphalt to 155-170°C, in this example, heat to 160°C; then weigh 2kg of interface modifi...

Embodiment 1

[0067] Embodiment 16 differs from Embodiment 1 only in that, as figure 1 As shown, the high-speed shear emulsifier used includes a tank body 1, a heating channel is arranged on the outer wall of the tank body 1, and a heat source is connected to the heating channel (for example, water, oil, liquid metal, etc. are passed into the heating channel). The top of the tank body 1 is provided with a sealing cover body 2 , the sealing cover body 2 is provided with a material inlet 21 , and the bottom of the tank body 1 is provided with a material outlet port 11 . The material inlet 21 is provided with a sealing plug, and the material outlet 11 is provided with a discharge valve.

[0068] The inner side of the sealing cover 2 is fixed with a motor, the driving shaft 4 of the motor is coaxially fixed with the stirring shaft 3, and the driving gear 31 is coaxially fixed on the stirring shaft 3; the sealing cover 2 is also rotatably connected with the driving shaft 4, and the driving shaft...

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Abstract

The invention belongs to the technical field of compositions of asphalt materials, and discloses high-storage-stability rubber asphalt which comprises the following raw materials in parts by mass: 100parts of petroleum asphalt, 17-23 parts of rubber powder and 0.5-3 part of interface modifier. The rubber powder is one or more of a truck tire, a car tire and a bicycle tire; and the interface modifier comprises SBS, EVA, a rubber cross-linking agent and carbon black. The preparation method comprises the following steps: adding the petroleum asphalt into a mixing tank A according to a certain ratio, heating to 155-170 DEG C, adding the interface modifier according to a certain ratio, and carrying out thermal insulation stirring to form a primary mixed material; carrying out first-stage grinding and then carrying out heat preservation and stirring; and adding the rubber powder, carrying out secondary grinding, stirring while keeping the temperature, carrying out tertiary grinding, and stirring while keeping the temperature to complete development, thereby obtaining the high-storage-stability rubber asphalt finished product. The invention solves the problem of unstable pavement usability caused by performance attenuation of the existing rubber asphalt in the high-temperature storage process.

Description

technical field [0001] The invention belongs to the technical field of asphalt material compositions, and in particular relates to a rubber asphalt with high storage stability and a preparation method thereof. Background technique [0002] Asphalt is a dark brown complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is mainly used as infrastructure materials, raw materials and fuels. It is now widely used in transportation (roads, railways, aviation etc.), construction, agriculture, water conservancy engineering, industry (extraction industry, manufacturing industry) and other fields. The most widely used asphalt is used as a pavement material. [0003] With the rapid development of the economy, transportation has also developed rapidly. Under the repeated action of long-term vehicle loads, temperature changes, freeze-thaw cycles, etc., the road surface is prone to cracks, ruts and other forms of damage. Lifespan is ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L19/00C08L53/02C08L23/08C08K3/04C08K5/15C08K5/47C08K5/405C08K13/02
CPCC08L95/00C08L2205/035C08L19/003C08L53/02C08L23/0853C08K3/04C08K5/15C08K5/47C08K5/405C08K13/02
Inventor 董大伟江宽刘双旺董进学马庆杰颜亮武晋巍
Owner 北京路德永泰环保科技有限公司
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