Hybrid nanocomposite material used for buildings and preparation method thereof

A nano-composite material and construction technology, applied in the field of construction materials, can solve the problems of unstable electrical performance, insufficient, low compatibility and durability, achieve good bonding ability, improve dynamic damping and vibration reduction performance, and improve dynamic resistance. impact effect

Inactive Publication Date: 2013-02-20
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above defects, the present invention provides a hybrid composite material for construction, which overcomes the lack of static and dynamic mechanical properties, low compatibility and durability, and unstable electrical properties of existing nanofiber cement-based materials and polymer-modified cement-based materials. question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The steps of hybrid composite materials are as follows: Measure 0.5g carboxymethyl cellulose, 5.0g alkylphenol polyoxyethylene ether (trade name Triton x-100, referred to as Tx100), 0.1g polyacrylate and add 100mL distilled water (DSW), stirring and dissolving to prepare a mixed solution. Weigh 2.0 g of multi-walled carbon nanotubes (MWNT) with an outer diameter of 25 nm and a length of 15 μm, slowly add them into the mixed solution while stirring, carry out mechanical stirring for 30 min, ultrasonic treatment for 3 h (ultrasonic frequency 40 kHz, power 60 W), Then subpackage and carry out centrifugation for 10 minutes to separate out the settled undispersed agglomerates (by weighing, the content of MWNT in the final dispersion is calculated to be 1.8%) to obtain a uniform carbon nanotube aqueous dispersion, which is ready for use. Take by weighing 22.4g of water-based epoxy resin (EP), 33.6g of water-based resin curing agent, stir the mixed resin and curing agent at a ...

Embodiment 2

[0022] Add 0.5g polyether carboxylate block copolymer superplasticizer MPEG and 300g sand (fineness modulus 1.6-2.2, average particle size 0.25-0.35mm) into the mixed slurry.

[0023] The measured impact strength, elongation at break, damping coefficient, impermeability coefficient, and resistivity test repeatability of the hybrid composite material (under the same applied electric field strength) are higher than those of the standard carbon nanotube cement-based composite material. 214.7%, 275.0%, 267.5%, 264.8%, 29 times.

[0024] Others are with embodiment 1.

Embodiment 3

[0026]The steps of the hybrid composite material are as follows: Measure 1 g of gum arabic, 6 g of polyethylene glycol octylphenyl ether, and 0.2 g of silanone polyether, add them into 150 mL of distilled water, stir and dissolve, and prepare a mixed solution. Weigh 4.5 g of carbon nanotubes, slowly add them into the mixed solution while stirring, carry out 30 min of mechanical stirring, 3 h of ultrasonic treatment (ultrasonic frequency 40 kHz, power 100 W), then subpackage and carry out 15 min of centrifugation to separate out the unsedimented Dispersed agglomerates (weighed, and the content of carbon nanotubes in the final dispersion was calculated to be 2.5%) to obtain a uniform aqueous dispersion of carbon nanotubes, which was set aside. Weigh 30g of water-based phenolic resin, 30g of water-based resin curing agent, stir the mixed resin and curing agent at low speed for 5 minutes, then add 15ml of water-based carbon nanotube dispersion while stirring, add 80ml of water, and...

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PUM

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Abstract

The invention relates to a material used for buildings and a production method of the material. The hybrid nanocomposite material used for buildings provided in the invention includes the following components by weight: 100 parts of cement, 10-30 parts of water-based resin, 0.01-45 parts of a water-based resin curing agent, 25-50 parts of water, 0.5-2 parts of a super plasticizer, 0.1-5 parts of a nano-fiber, 0.1-5 parts of a nano-fiber dispersing agent, 0.01-3 parts of a thickening stabilizer, and 0.02-0.2 part of a foam inhibitor. With the method provided in the invention, the nano-fiber can realize good dispersion and network distribution in a water-based resin system and a subsequent resin/cement hybrid matrix, and can form a compact reticular cemented structure together with hardening resin and cement, thus improving the dynamic shock resistance and dynamic vibration damping performance of the hybrid composite material.

Description

technical field [0001] The invention relates to a building material and a method for producing the material. Background technique [0002] The shortcomings of cement / concrete, such as low toughness, high brittleness, and low vibration and energy dissipation properties, have always limited its use as a major civil engineering material. People have been trying to add various high-performance macroscopic fiber materials to reduce the structural failure caused by cement materials. improve its mechanical properties. As we all know, cement-based materials are often a multi-scale, porous gel after hardening, and its pore structure includes both macropores larger than 1 μm and between 2 -10 3 Capillary pores between nm, between 10-10 2 nm transition pores, including gel pores smaller than 10nm, most of which are in the nanometer scale. The corresponding macroscopic fiber reinforced cement-based materials still have many defects at the micro / nano scale, and it needs to be further...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00B28B1/52
Inventor 罗健林段忠东李秋义刘玺孙胜伟
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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