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Preparation method of high-performance styrene-butadiene-styrene block copolymer (SBS) modified emulsified asphalt

A technology of emulsified asphalt and composite modified asphalt, which is applied in building components, building insulation materials, buildings, etc. , environmental protection, the improvement effect of modified emulsified asphalt is not as good as that of SBS, etc., to achieve good low temperature performance, high temperature performance improvement, and easy processing.

Active Publication Date: 2014-11-05
厦门华特公路沥青技术有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent application CN102040846A discloses "an oil-resistant asphalt pavement material and its preparation method", and proposes to use SBS, EVA, polymer wax, and cross-linking agent to prepare oil-resistant modified asphalt. It has excellent performance, but it can only be used for high-temperature construction. It does not have the advantages of safety, energy saving and environmental protection of emulsified asphalt construction at room temperature. Upgrade and maintenance requirements of pavement (bridge deck) such as permeable oil
[0005] Chinese patent CN100362053C discloses a kind of "composite modified emulsified asphalt and preparation method thereof" (reference document 1), which uses modifier Sasobit and SBR latex to improve high temperature performance and low temperature performance simultaneously, but as mentioned above SBR latex , generally more than 30% are non-SBR glue, the cost is high, and the improvement effect on modified emulsified asphalt is not as good as that of SBS; at the same time, the emulsifier is INDULIN DF42, INDULIN DF62 fast-cracking emulsifier, which is used for stone chip sealing layer
Chinese patent CN100355834C discloses "a kind of SBS modified emulsified asphalt and its preparation method" (comparison document 2), which uses Sasobit and SBS to improve the emulsification temperature, high temperature performance and low temperature performance at the same time, but the price of Sasobit products is high and the production cost is high , and Sasobit will cause great damage to low temperature performance; at the same time, its emulsifiers are MQK-1M, MQK-MQ3, Redicote-C-450 slow-cracking emulsifiers, which belong to BCR modified emulsified asphalt and can only be used for cold mixes Such as micro-surfacing, slurry seal, etc., can not be used for seal, adhesive layer, bridge deck waterproof adhesive layer

Method used

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  • Preparation method of high-performance styrene-butadiene-styrene block copolymer (SBS) modified emulsified asphalt
  • Preparation method of high-performance styrene-butadiene-styrene block copolymer (SBS) modified emulsified asphalt
  • Preparation method of high-performance styrene-butadiene-styrene block copolymer (SBS) modified emulsified asphalt

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Experimental program
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Effect test

Embodiment 1

[0030] The SBS modified emulsified asphalt of the present invention is made of the following components in parts by weight:

[0031]

[0032] SK70 asphalt is produced by SK Group of South Korea; SBS1301 is produced by Beijing Yanshan Petrochemical Co., Ltd.; AA63D is produced by MeadWestvaco of the United States; EVA wax is produced by Qingdao Sinoplastic Economic Development Co., Ltd., model EVA-Wax300.

[0033] A kind of preparation method of high-performance SBS modified emulsified asphalt of the present invention, carry out according to the following steps:

[0034] (1) each component is prepared according to the aforementioned weight ratio;

[0035](2) Heat SK70 asphalt to 170°C, add SBS1301 and EVA wax and stir for 30 minutes, then disperse SBS1301 and EVA wax into SK70 asphalt by high-speed shearing for 30 minutes, control the temperature at 180°C, and then stir again After 30min, the SBS composite modified asphalt for emulsification was obtained;

[0036] (3) When...

Embodiment 2

[0040] The SBS modified emulsified asphalt of the present invention is made of the following components in parts by weight:

[0041]

[0042] Donghai No. 90 bitumen is "Donghai Brand" No. 90 bitumen produced by China Petrochemical Corporation; SBS3501 is produced by Li Changrong Chemical Industry Co., Ltd.; INDULIN DF62 is produced by MeadWestvaco of the United States; EVA wax is produced by Qingdao Sinoplastic Economic Development Co., Ltd. , Model EVA-Wax300.

[0043] A kind of preparation method of high-performance SBS modified emulsified asphalt of the present invention, carry out according to the following steps:

[0044] (1) each component is prepared according to the aforementioned weight ratio;

[0045] (2) Heat Donghai No. 90 asphalt to 180°C, add SBS3501 and EVA wax and stir for 30 minutes, then disperse SBS3501 and EVA wax into Donghai No. 90 asphalt through a colloid mill, control the temperature at 170°C, and control the time for 60 minutes, then After stirri...

Embodiment 3

[0050] The SBS modified emulsified asphalt of the present invention is made of the following components in parts by weight:

[0051]

[0052]

[0053] SK90 bitumen is produced by SK Group of South Korea; SBS1301 is produced by Beijing Yanshan Petrochemical Co., Ltd.; MQ3 is produced by MeadWestvaco of the United States; EVA wax is produced by Anhui Yiwei Wax Industry Co., Ltd., model EVA-ZL1.

[0054] A kind of preparation method of high-performance SBS modified emulsified asphalt of the present invention, carry out according to the following steps:

[0055] (1) each component is prepared according to the aforementioned weight ratio;

[0056] (2) Heat SK90 asphalt to 185°C, add SBS1301 and EVA wax and stir for 30 minutes, then disperse SBS1301 and EVA wax into SK90 asphalt through a colloid mill for 90 minutes, control the temperature at 185°C, and then stir for 240 minutes Finally, the SBS composite modified bitumen used for emulsification is obtained;

[0057] (3) Wh...

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Abstract

The invention relates to high-performance styrene-butadiene-styrene block copolymer (SBS) modified emulsified asphalt and a preparation method thereof. The high-performance SBS modified emulsified asphalt is prepared from the following components by weight percent: 56.0-67.0% of matrix asphalt, 1.2-2.5% of SBS, 0.5-1.5% of ethylene vinyl acetate (EVA) wax, 0.2-2.5% of cationic emulsifier, 0-0.2% of thickening agents and 30.0-42.0% of water. The high-performance SBS modified emulsified asphalt can generate a thick asphalt membrane after demulsification. The asphalt membrane has a high softening point, is high in performance (PG) grade and dynamic viscosity and good in low-temperature performance, and strengthens bond performance, waterproof performance and deformation-resisting capability. The SBS modified emulsified asphalt is remarkably superior to ordinary modified emulsified asphalt in high-temperature performance, low-temperature performance and bond performance, and ensures characteristics required by road construction, such as a bond layer for ultrathin overlay of pavement, and new construction or maintenance of hot or heavy-duty roads.

Description

technical field [0001] The invention relates to the technical field of asphalt, in particular to a road engineering SBS modified emulsified asphalt and a preparation method thereof. Background technique [0002] With the increasingly busy roads in our country, the requirements for the use and function of the road surface are also getting higher and higher, which puts forward higher and higher quality requirements for asphalt. Due to the high temperature required for production and construction of ordinary modified asphalt, the application has certain limitations. Chinese patent application CN102040846A discloses "an oil-resistant asphalt pavement material and its preparation method", and proposes to use SBS, EVA, polymer wax, and cross-linking agent to prepare oil-resistant modified asphalt. It has excellent performance, but it can only be used for high-temperature construction. It does not have the advantages of safety, energy saving and environmental protection of emulsif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L23/08C08J3/03
Inventor 曹赟蔡智慧
Owner 厦门华特公路沥青技术有限公司
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