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PVA (polyvinyl alcohol) fiber reinforced superhigh-toughness polymer-based composite material and preparation method thereof

A technology of ultra-high toughness and geopolymers, applied in the field of materials science, can solve the problems of poor ability to control cracks, low tensile strength of concrete, self-heaviness, etc., and achieve the effect of making up for poor ductility, low cost, and price reduction

Inactive Publication Date: 2017-06-13
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a PVA-reinforced ultra-high-toughness polymer-based composite material and a preparation method thereof. The PVA-reinforced ultra-high-toughness polymer-based composite material and The preparation method should solve the technical problems of low concrete tensile strength, heavy weight, high brittleness and poor ability to control cracks in the prior art

Method used

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  • PVA (polyvinyl alcohol) fiber reinforced superhigh-toughness polymer-based composite material and preparation method thereof
  • PVA (polyvinyl alcohol) fiber reinforced superhigh-toughness polymer-based composite material and preparation method thereof

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Embodiment 1

[0037] Low calcium fly ash: 542 parts, high calcium fly ash: 136 parts, quartz sand: 182.7 parts, sodium silicate: 173 parts, sodium hydroxide: 38 parts, water: 160 parts, fiber: 14 parts, metakaolin : 20.3 parts.

[0038] The mixing ratio uses first-grade high-calcium fly ash, first-grade low-calcium fly ash and metakaolin from Inner Mongolia, and the solid mixture is added to the stirring pot at a slow speed (revolution 62±5 r / min, rotation 140±5 r / min) dry stirring for 3 minutes until uniform. Then dissolve the prepared alkali activator in water and add it to the stirring pot, stir quickly (revolution 125±10 r / min, rotation 285±10 r / min) for 5 minutes, add the fiber in the stated proportion, and stir for another 6 minutes until The polyvinyl alcohol fibers are evenly dispersed, that is, the PVA-reinforced ultra-high toughness geopolymer-based composite material slurry is obtained, and finally the slurry is placed in a mold for molding, cured in an oven at 80°C for 2 hours...

Embodiment 2

[0042] Low calcium fly ash: 542 parts, high calcium fly ash: 136 parts, quartz sand: 203 parts, sodium silicate: 173 parts, sodium hydroxide: 38 parts, water: 160 parts, fiber: 15.6 parts, metakaolin : 0 copies.

[0043] The mixing ratio uses first-grade high-calcium fly ash and first-grade low-calcium fly ash. Add the solid mixture into the stirring pot, and dry stir at a slow speed (revolution 62±5 r / min, rotation 140±5 r / min) 3 minutes until smooth. Then dissolve the prepared alkali activator in water and add it to the stirring pot, stir quickly (revolution 125±10 r / min, rotation 285±10 r / min) for 5 minutes, add the fiber in the stated proportion, and stir for another 6 minutes until The polyvinyl alcohol fibers are evenly dispersed, that is, the PVA-reinforced ultra-high toughness geopolymer-based composite material slurry is obtained, and finally the slurry is placed in a mold for molding, cured in an oven at 80°C for 2 hours, and then cured at room temperature for moldi...

Embodiment 3

[0047] Low calcium fly ash: 542 parts, high calcium fly ash: 136 parts, quartz sand: 192.9 parts, sodium silicate: 173 parts, sodium hydroxide: 38 parts, water: 160 parts, fiber: 17 parts, metakaolin : 10.2 parts.

[0048] The mixing ratio uses first-grade high-calcium fly ash, first-grade low-calcium fly ash and metakaolin from Inner Mongolia, and the solid mixture is added to the stirring pot at a slow speed (revolution 62±5 r / min, rotation 140±5 r / min) dry stirring for 3 minutes until uniform. Then dissolve the prepared alkali activator in water and add it to the stirring pot, stir quickly (revolution 125±10 r / min, rotation 285±10 r / min) for 5 minutes, add the fiber in the stated proportion, and stir for another 6 minutes until The polyvinyl alcohol fibers are evenly dispersed, that is, the PVA-reinforced ultra-high-toughness polymer-based composite material slurry is obtained, and finally the slurry is placed in a mold for molding, cured in an oven at 80°C for 2 hours, and...

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Abstract

The invention provides a PVA (polyvinyl alcohol) fiber reinforced superhigh-toughness polymer-based composite material. The PVA fiber reinforced superhigh-toughness polymer-based composite material is prepared from the following raw materials in parts by weight: 542 parts of low-calcium fly ash, 136 parts of high-calcium fly ash, 0 to 20 parts of metakaolin, 183 to 203 parts of quartz sand, 160 parts of water, 38 parts of sodium hydroxide, 14 to 17 parts of PVA fiber, and 173 parts of sodium silicate. The invention also provides a preparation method of the superhigh-toughness polymer-based composite material. The superhigh-toughness polymer-based composite material has the advantages that cement is replaced with a large amount of industrial waste slag fly ash, industrial wastes are changed into valuables, the environment is effectively protected, the consumption of energy source is decreased, and the emission of carbon dioxide is reduced; the toughness of the polymer-based composite material is reinforced by the PVA, the defect of poor ductility of the traditional polymer-based composite material is overcome, and the polymer-based composite material is conveniently popularized and applied in the engineering field of China.

Description

technical field [0001] The invention belongs to the field of materials science, and relates to a composite material for construction, in particular to a PVA fiber-reinforced ultra-high-toughness geopolymer-based composite material and a preparation method thereof. Background technique [0002] Geopolymer is a kind of inorganic [SiO 4 ], [AlO 4 ] Tetrahedron as the main composition, a new type of inorganic silicon-aluminum gelling material with a three-dimensional network-like bonding structure. Compared with traditional cement-based materials, its raw materials have a wide range of sources, and it is convenient to prepare, with low energy consumption and CO 2 It has low emission, rapid hardening and early strength, high strength, impermeability, frost resistance, high toughness, corrosion resistance, fire resistance and solid sealing of heavy metals, etc., making it very good in engineering, especially in emergency repair and construction projects. application. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C04B18/08C04B14/10
CPCC04B14/106C04B18/08C04B28/006C04B2201/50C04B14/06C04B22/062C04B22/00C04B16/0641Y02W30/91
Inventor 阚黎黎王家豪段贝贝龚雅文陶毅晨
Owner UNIV OF SHANGHAI FOR SCI & TECH
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