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Nano cellulose, thermoplastic and thermosetting synergistically modified asphalt material and preparation method thereof

A technology of nano-cellulose and asphalt materials, which is applied in building thermal insulation materials, building components, buildings, etc., can solve the problems of small particles, long evaporation time, inconvenient construction, etc., and achieve broad application prospects, improve comprehensive performance, and facilitate construction. Effect

Pending Publication Date: 2021-11-09
长沙新立硅材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nanocellulose-modified emulsified asphalt material prepared by this method has a large water content and a long evaporation time, and the construction is inconvenient. It is difficult to apply it as an asphalt material for the structural layer of the asphalt pavement, but can only be used in the sticky layer, waterproof layer or slurry. Sealing
Moreover, because nanocellulose itself has the characteristics of large specific surface area, small particles, and not easy to disperse, if it is directly added to asphalt materials for modification, it is prone to agglomeration, which seriously affects the modification of nanocellulose on asphalt materials. effect, and even weaken the performance of asphalt materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Preparation of nanocellulose thermoplastic polymer composite modifier:

[0044] Step 1: Add 4 parts of SBS polymer to 12 parts of low-boiling point organic solvent (this organic solvent is a mixture of hexane and ethyl acetate, and its mixing ratio is mass ratio cyclohexane:ethyl acetate=2:8~ 5:5), after fully dissolving, slowly add 12 parts of deionized water to the polymer organic solution, and then add 0.2 parts of emulsifier. Shearing on a high-speed emulsifying shear until fully emulsified, and then removing the organic solution by vacuum distillation to obtain a polymer emulsion;

[0045] Step 2: Add 0.5 parts of TEMPO oxidized wood pulp nanocellulose to 50 parts of deionized water, and obtain a uniformly dispersed nanocellulose aqueous solution through ultrasonic oscillation and magnetic stirring;

[0046] Step 3: Slowly add the nanocellulose aqueous solution prepared in step 2 to the polymer emulsion prepared in step 1, and use a high-speed emulsification s...

Embodiment 2

[0054] (1) Preparation of nanocellulose thermoplastic polymer composite modifier:

[0055] Step 1: Add 6 parts of SBS polymer to 18 parts of low-boiling point organic solvent (this organic solvent is a mixture of hexane and ethyl acetate, and its mixing ratio is mass ratio cyclohexane:ethyl acetate=2:8~ 5:5), after fully dissolving, slowly add 18 parts of deionized water to the polymer organic solution, and then add 0.4 parts of emulsifier. Shearing on a high-speed emulsifying shear until fully emulsified, and then removing the organic solution by vacuum distillation to obtain a thermoplastic polymer emulsion;

[0056] Step 2: Add 3 parts of TEMPO oxidized wood pulp nanocellulose to 300 parts of deionized water, and obtain a uniformly dispersed nanocellulose aqueous solution through ultrasonic oscillation and magnetic stirring;

[0057] Step 3: Slowly add the nanocellulose aqueous solution prepared in step 2 to the thermoplastic polymer emulsion prepared in step 1, and use a ...

Embodiment 3

[0065] (1) Preparation of nanocellulose thermoplastic polymer composite modifier:

[0066] Step 1: 5 parts of SBS polymers are added to 15 parts of low-boiling point organic solvents (the organic solvent is a mixture of hexane and ethyl acetate, and the mixing ratio is mass ratio cyclohexane:ethyl acetate=2:8~ 5:5), after fully dissolving, slowly add 15 parts of deionized water to the polymer organic solution, and then add 0.3 parts of emulsifier. Shearing on a high-speed emulsifying shear until fully emulsified, and then removing the organic solution by vacuum distillation to obtain a thermoplastic polymer emulsion;

[0067] Step 2: Add 2 parts of TEMPO oxidized wood pulp nanocellulose to 200 parts of deionized water, and obtain a uniformly dispersed nanocellulose aqueous solution through ultrasonic oscillation and magnetic stirring;

[0068] Step 3: Slowly add the nanocellulose aqueous solution prepared in step 2 to the thermoplastic polymer emulsion prepared in step 1, and...

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PUM

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Abstract

The invention discloses a nano cellulose, thermoplastic and thermosetting synergistically modified asphalt material and a preparation method thereof. The material comprises, by weight, 100 parts of matrix asphalt, 0.5-3 parts of nano cellulose, 0.2-0.4 part of an emulsifier, 2-9 parts of a thermoplastic polymer, 0.1-0.3 part of a stabilizer, 47-78 parts of a thermosetting polymer and 14-30 parts of a curing agent.

Description

technical field [0001] The application relates to the technical field of asphalt materials, in particular to an emulsified asphalt material synergistically modified by nanocellulose, thermoplastic and thermosetting, and a preparation method thereof. Background technique [0002] The highway construction in our country is changing with each passing day. Asphalt pavement, as the main pavement form of high-grade highways, has shown superior functionality. However, with the rapid development of my country's economy, under the double influence of increasing traffic flow and heavy traffic, early diseases such as water damage, rutting and cracks on the pavement continue to appear, and asphalt pavement is often difficult to reach its design life. In order to prolong the service life of asphalt pavement, improve the service quality of the pavement, and reduce the cost of maintenance, it is imperative to adopt effective modification and enhancement methods and means to improve the com...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L1/04C08L9/06C08L63/00C08J3/00C08L1/02
CPCC08J3/005C08J2395/00C08J2453/02C08J2401/04C08J2409/06C08J2463/00C08J2401/02
Inventor 刘立新钟勇
Owner 长沙新立硅材料科技有限公司
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