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A kind of composite tb rubber powder modified asphalt

A modified asphalt and composite modification technology, applied in building components, building insulation materials, buildings, etc., can solve problems such as insufficient high temperature rutting resistance, achieve good low temperature performance, solve environmental pollution, and improve high temperature rutting resistance. Effect

Inactive Publication Date: 2021-11-02
成都交通投资集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a compound TB rubber powder modified asphalt in order to overcome the defect of insufficient high-temperature anti-rutting performance of the common TB rubber powder modified asphalt existing in the above-mentioned prior art

Method used

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  • A kind of composite tb rubber powder modified asphalt
  • A kind of composite tb rubber powder modified asphalt
  • A kind of composite tb rubber powder modified asphalt

Examples

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Comparison scheme
Effect test

preparation example Construction

[0074] The preparation method of the above-mentioned composite TB rubber powder modified asphalt includes the following steps:

[0075] (1) Preparation: Preparation according to the raw material ratio of the TB rubber powder asphalt, waste toner, stabilizer, and amphoteric surface activator;

[0076] (2) Preprocessing: The waste toner is heated to 130 to 150 ° C, and then the waste toner ultrasonic waves will strengthen 0.5 to 1 hour under conditions of ultrasonic power of 1000 to 3000W;

[0077] (3) Composite modification: Extract the pre-treated waste carbon powder to the TB rubber powder, after each addition, stir until there is no obvious particle, then continue to add, so repeatedly until the carbon powder is added; then at 210 The mechanical mixer was stirred at ~ 230 ° C for 2 to 4 hours, and the shear machine was used to cut 1.5 to 2 hours by 1200 ± 50 r / min.

[0078] (4) Pregnancy: Add a stabilizer, surfactant, surfactant at 150 to 180 ° C, and mixed for 3 to 4 hours at...

Embodiment 1

[0081] Preparation method of composite TB rubber powder modified asphalt, as follows:

[0082] (1) Preprocessing: First heat the waste toner is heated to 130 ° C, then ultrasonic enhancement, ultrasonic power 1000W, and the radiation time is 30 min;

[0083] (2) Composite modification: 9 parts of carbon powder preprocessed into 80 parts of TB rubber powder modified asphalt, and the mechanical mixer was stirred at 220 ° C for 2 h, and then the shearing machine was scared at 1200r / min. Sliced ​​1.5H;

[0084] (3) Pregnancy: 2 parts of 2 parts of stabilizers (diene isocyanurate and diaminobenzamide) are added to the composite asphalt, the mass ratio of the two is 1.5) and 3 parts of the amphoteric surface activator (4 - Aminophenylene thiophene), at 160 ° C temperature, mixed mixed mixed for 3 hours, cooling to obtain a composite Tb rubber modified asphalt.

Embodiment 2

[0086] Preparation method of composite TB rubber powder modified asphalt, as follows:

[0087] (1) Preprocessing: First heating the waste toner conventional to 140 ° C, then use ultrasonic enhancement, ultrasonic power 2000W, and the radiation time is 40 min;

[0088] (2) Composite modification: 12 parts of carbon powder preprocessed into 85 parts of TB rubber powder modified asphalt, and the mechanical mixer was stirred at 220 ° C for 3 h, and then used the shearing machine to cut at 1200 r / min. Sliced ​​1.5H;

[0089] (3) Pregnancy: 3 parts of the composite asphalt (diethylene isocyanurate and diaminobenzamide), the mass ratio of 1.2) and 4 parts of the two-sex surface activator (4 - Aminophenylene thiophene), at 160 ° C temperature, mixed mixed mixed for 3 hours, cooling to obtain a composite Tb rubber modified asphalt.

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Abstract

The invention relates to a compound TB rubber powder modified asphalt, the raw material of which comprises the following components in parts by weight: 80-90 parts of TB rubber powder asphalt; 9-15 parts of waste carbon powder; 2-3 parts of stabilizer; amphoteric surface 3 to 5 parts of activator; the preparation method is as follows: pretreatment: heating the waste carbon powder to 130-150°C, and then using ultrasonic waves to strengthen; composite modification: adding the pretreated waste carbon powder to TB rubber powder asphalt, heating Stir evenly under certain conditions, and then perform shearing treatment to obtain composite asphalt; inoculation: add stabilizer and surfactant to the obtained composite asphalt, mix and incubate under heating and stirring conditions, and obtain composite TB rubber powder modified asphalt after cooling. Compared with the prior art, the TB rubber powder modified asphalt obtained in the present invention has good low temperature performance and fatigue performance, significantly improves the high temperature stability of the rubber powder modified asphalt, and improves its anti-rutting performance.

Description

Technical field [0001] The present invention relates to a composite rubber modified asphalt TB, TB particular rubber modified asphalt play adding (multiplexing) preparation of modified bitumen blends stabilized waste toner after use of the printer and amphoteric surfactants, and agents The method can be used for the construction of high-grade asphalt pavement, belonging to the area of ​​road construction. Background technique [0002] TB (Terminal blend) is a new type of rubber modified asphalt bitumen, in recent years gradually developed. TB is a high temperature rubber modified asphalt powder occurs so that the complete degradation reactions and desulfurization in bitumen, crumb rubber and asphalt degradation desulfurized compatible SBS added thereto and sulfur cross-linking reaction, thereby forming a stable rubber modified asphalt. The study found, TB good crumb rubber modified asphalt storage stability, outstanding low temperature and fatigue performance, but the lack of hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L21/00C08L53/02C08L33/08C08L25/14C08K13/06C08K9/00C08K3/04C08K3/22C08K5/20C08K5/3492C08K5/45
CPCC08K2003/2275C08K2201/003C08L95/00C08L2201/08C08L2205/035C08L21/00C08L53/02C08L33/08C08K13/06C08K9/00C08K3/04C08K3/22C08K5/20C08K5/34924C08K5/45C08L25/14
Inventor 李旭郭仪南赵宇肖艺成付涛
Owner 成都交通投资集团有限公司
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