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
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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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