Polymer modified emulsified asphalt and preparation method thereof

A technology of emulsified asphalt and modified asphalt, which is applied in building structures, building components, building insulation materials, etc., can solve the problems of difficult emulsification and difficult storage and transportation of polymer modified asphalt, and achieve excellent bonding performance and easy emulsification , Good storage and transportation performance

Inactive Publication Date: 2020-06-02
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to provide a kind of polymer modified emulsified asphalt and its preparation method, solve the problems that polymer modified asphalt is difficult to emulsify, difficult to store and transport, etc., and improve the stability of polymer modified emulsified asphalt

Method used

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  • Polymer modified emulsified asphalt and preparation method thereof
  • Polymer modified emulsified asphalt and preparation method thereof
  • Polymer modified emulsified asphalt and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] ① Preparation of polymer modified asphalt

[0043] 110 road asphalt 89.0%, its asphaltene content is 1.5%, sulfur content is 0.3%;

[0044] Furfural extract oil 2%, its aromatic content is 85%, kinematic viscosity at 100°C is 50mm 2 / s;

[0045] Styrene-Butadiene-Styrene Block Copolymer SBS T6302H 8%

[0046] Stabilizer A 1.0%

[0047] Wherein stabilizer A comprises,

[0048] Sulfur trioxide 95%

[0049] Benzoyl Peroxide 0.25%

[0050] Aluminum oxide 0.25%

[0051] The preparation method of the polymer modified asphalt of the present embodiment comprises the following steps,

[0052] Step 1, preheating 89.0% No. 110 road asphalt and 2% furfural extraction oil to 130°C;

[0053] Step 2. Mix the preheated No. 110 road asphalt and furfural oil, heat to 160°C, add 8% styrene-butadiene-styrene block copolymer SBS T6302H, stir and shear for 30 minutes, and prepare get the first mixture;

[0054] Step 3. Add 1.0% stabilizer A to the first mixture, heat it to 180° C.,...

Embodiment 2

[0069] ① Preparation of polymer modified asphalt

[0070] Road No. 90 asphalt 87.0%, its asphaltene content is 0.1%, sulfur content is 1.0%;

[0071] Furfural extract oil 5%, its aromatic content is 50%, kinematic viscosity at 100°C is 70mm 2 / s;

[0072] Styrene-Butadiene-Styrene Block Copolymer SBS T6302H 5%

[0073] Stabilizer A 3.0%

[0074] Wherein stabilizer A comprises,

[0075] Concentrated sulfuric acid 99.5%

[0076] Benzoyl Peroxide 0.25%

[0077] Aluminum oxide 0.25%

[0078] The preparation method of the polymer modified asphalt of the present embodiment comprises the following steps,

[0079] Step 1, preheating 87.0% No. 90 road asphalt and 5% furfural extraction oil to 140°C;

[0080]Step 2. Mix the preheated No. 90 road asphalt and furfural oil, heat to 170°C, add 5% styrene-butadiene-styrene block copolymer SBS T6302H, stir and shear for 30 minutes, and prepare get the first mixture;

[0081] Step 3: Add 3.0% of stabilizer A to the first mixture, hea...

Embodiment 3

[0095] ① Preparation of polymer modified asphalt

[0096] 70 road asphalt 87.5%, its asphaltene content is 1.5%, sulfur content is 1.0%

[0097] Furfural extract oil 5%, its aromatic content is 75%, kinematic viscosity at 100°C is 63mm 2 / s;

[0098] Styrene Butadiene Rubber SBR K1585 2%, Styrene-Butadiene-Styrene Block Copolymer SBS T6302H 3%

[0099] Stabilizer A 2.5%

[0100] Wherein stabilizer A comprises,

[0101] Oleum 99.5%

[0102] tert-Butyl Benzoyl Peroxide 0.25%

[0103] Zinc Oxide 0.25%

[0104] The preparation method of the polymer modified asphalt of the present embodiment comprises the following steps,

[0105] Step 1, preheating to 150 ℃ with 87.5% No. 70 road asphalt and 5% furfural extraction oil;

[0106] Step 2. Mix the preheated No. 70 road asphalt and furfural oil, heat to 170°C, add 2% styrene-butadiene rubber SBR K1585 and 3% styrene-butadiene-styrene block copolymer SBS After T6302H, stir and shear for 20min to obtain the first mixture;

[01...

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Abstract

The invention discloses polymer modified emulsified asphalt and a preparation method thereof. The polymer modified emulsified asphalt comprises the following components: 55-65% of polymer modified asphalt and 35-45% of a soap liquid, wherein the polymer modified asphalt is sulfonated polymer modified asphalt and comprises the following components: 80.0-90.0% of matrix asphalt, 2.0-12.0% of a cosolvent, 3.0-8.0% of a high-molecular polymer and 1.0-5.0% of a stabilizer A, and the soap liquid comprises the following components: 90.0-94.0% of water, 3.0-7.0% of an emulsifier, 0.5-2.5% of a stabilizer B and 1.5-2.5% of a pH regulator. The polymer modified emulsified asphalt provided by the invention has excellent storage stability, high dynamic viscosity of evaporation residues, high softeningpoint, good elasticity, good high-temperature rut resistance and low-temperature embrittlement resistance.

Description

technical field [0001] The invention relates to the technical field of road asphalt, in particular to a polymer modified emulsified asphalt and a preparation method thereof. Background technique [0002] With the rapid development of my country's transportation industry, high-grade highways, especially special pavement structures (such as drainage pavement, high modulus asphalt mixture, ultra-thin wear layer, etc.), have more and more performance requirements for interlayer bonding materials. High, such as requiring the bonding material to have high viscosity and high elasticity, so as to improve the bonding strength between layers and the performance of high temperature resistance and brittle crack resistance. At the same time, the phenomenon of heavy and overloaded road traffic is becoming more and more common, coupled with the increase in the frequency of extreme continuous hot and cold weather in many places, resulting in more serious rutting and cracking diseases on asph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08L9/06C08L23/16C08K3/30C08K5/14C08K3/22C08K5/42C08K3/16
CPCC08K2003/164C08K2003/168C08K2003/2227C08K2003/2272C08K2003/2296C08K2003/309C08L95/00C08L2205/03C08L53/02C08K3/30C08K5/14C08K3/22C08L9/06C08L23/16C08K5/42C08K3/16
Inventor 彭煜蔺习雄熊良铨刘雁杨克红吕文姝
Owner PETROCHINA CO LTD
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