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Schiff base modified graphene oxide cement-based permeable crystallization type waterproof material as well as preparation and application thereof

A technology of permeable crystallization and waterproof materials, which is applied in the preparation of imino compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of high production costs, low economic benefits, complex waterproofing agent formulations, etc., and achieve simple construction, Low environmental requirements and good results

Inactive Publication Date: 2018-09-28
苏州太星新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The document with the publication number CN101759414B discloses a cement-based osmotic crystalline waterproofing agent. The waterproofing agent has certain impermeability and anti-corrosion of steel bars, but the formulation process of the waterproofing agent is complicated, resulting in high production costs and low economic benefits. high

Method used

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  • Schiff base modified graphene oxide cement-based permeable crystallization type waterproof material as well as preparation and application thereof
  • Schiff base modified graphene oxide cement-based permeable crystallization type waterproof material as well as preparation and application thereof
  • Schiff base modified graphene oxide cement-based permeable crystallization type waterproof material as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation of embodiment 1 Schiff base modified graphene oxide

[0026] Follow the steps below:

[0027] (1) Synthesis of Schiff base ligand: Dissolve 1 mol of propylamine and 0.1 mol of sodium hydroxide in methanol, add 1 mol of 4-methyl-substituted salicylaldehyde, heat and reflux for 5 hours to produce a solid, continue to reflux for 2 hours and then cool to room temperature, filtered, and the solid was repeatedly washed with ethanol to obtain the Schiff base ligand with a yield of 65%. The structural formula is:

[0028]

[0029] (2) Preparation of Schiff base-modified graphene oxide: Graphene oxide was prepared by the improved Hummers method, 1mol graphene oxide was uniformly dispersed in 50mL DMF by ultrasonic, stirred, and 10mL of 0.1mol DCC and 0.1mol DABCO were added dropwise DMF solution, continue to stir, add Schiff base ligand while stirring, react at 100°C for 12h, stop the reaction, filter, and wash the solid repeatedly with ethanol to obtain Schi...

Embodiment 2

[0032] The preparation of embodiment 2 Schiff base modified graphene oxide

[0033] Follow the steps below:

[0034] (1) Synthesis of Schiff base ligands: Dissolve 1mol butylamine and 0.2mol sodium hydroxide in methanol, add 1.2mol 4-fluorosalicylaldehyde, heat and reflux for 4 hours to produce solids, continue to reflux for 2 hours and then cool to At room temperature, filter, and wash the solid with ethanol repeatedly to obtain the Schiff base ligand with a yield of 93%. The structural formula is:

[0035]

[0036] (2) Preparation of Schiff base-modified graphene oxide: Graphene oxide was prepared by the improved Hummers method, 1.2mol graphene oxide was uniformly dispersed in 50mL DMF by ultrasonic, stirred, and 0.1mol DCC and 0.6mol DABCO were added dropwise 10mL DMF solution, continue to stir, add 1mol Schiff base ligand while stirring, react at 100°C for 12h, stop the reaction, filter, and wash the solid repeatedly with ethanol to obtain Schiff base modified graphene...

Embodiment 3-7

[0039] Example 3-7 Preparation of Schiff base modified graphene oxide cement-based permeable crystalline waterproof material

[0040]

[0041] Each component is weighed according to the proportion, placed in a gravity-free mortar mixer and stirred evenly to prepare a Schiff base modified graphene oxide cement-based permeable crystalline waterproof material.

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Abstract

The invention discloses a Schiff base modified graphene oxide cement-based permeable crystallization type waterproof material which comprises a composite concrete admixture, an active anionic catalyst, cement, fine aggregate, a rubber powder, a coupling agent, Fe2O3, CaO and MgO, wherein the active anionic catalyst is Schiff base modified graphene oxide; the composite concrete admixture comprisesa water reducing agent and a retarder; the water reducing agent refers to one or several in NC, ESJ, lignosulfonate, methyl naphthalene sulfonate condensate and polyalkyl aryl sulfonate condensate; the retarder refers to one or several of potassium sodium tartrate, fluosilicate, ferrous sulfate, phosphoric acid, sodium sulfite, lactic acid, calcium tartrate gluconate, sodium lignosulfonate, calcium lignosulphonate and magnesium lignosulfonate; the cement is high-alumina cement or Portland cement; the fine aggregate is quartz sand, silica powdr or natural river sand; the coupling agent is a silane coupling agent. The waterproof material disclosed by the invention has excellent properties such as good effect, simple construction, low environmental requirement, excellent waterproof property,excellent durability and the like.

Description

technical field [0001] The invention belongs to the technical field of construction engineering materials and their preparation and use, and in particular relates to a cement-based material surface waterproof material. Background technique [0002] The reinforced concrete structure was invented by people at the end of the 19th century. Because of its high strength, easy material acquisition, and strong adaptability to various shapes, it has been favored by people as soon as it appeared, and has become the main structure of most buildings today. Material. However, all kinds of buildings are in contact with different types of water, such as water vapor, surface water, ground water, etc. These waters have harmful effects on the structure of buildings in different ways and to varying degrees, such as hygroscopicity, capillarity, erosion, osmosis, freezing and thawing, etc. This effect will affect the use of buildings in light, and shorten the service life of buildings in sever...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B24/12C01B32/194C07C249/02C07C251/24C04B111/27C04B111/20
CPCC01B32/194C04B28/06C04B40/0039C04B2111/20C04B2111/27C07B2200/11C07C249/02C04B7/02C04B2103/302C04B2103/22C04B14/06C04B14/068C04B24/42C04B18/20C04B14/024C04B14/308C04B14/304C04B14/30C04B24/121C04B22/02C04B24/125C07C251/24
Inventor 周健徐自强邱暾哲
Owner 苏州太星新材料科技有限公司
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