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Phosphate type epoxy resin-nano clay hydrogel and preparation method thereof

An epoxy resin and nanoclay technology, which is applied in the field of phosphate ester type epoxy resin-nanoclay hydrogel and its preparation method, can solve the problem of reducing the breaking strength of hydrogel, insufficient toughness of hydrogel material, and reducing hydraulic pressure. Adhesive hydrophilicity and other issues, to achieve the effect of enhancing internal crosslinking density, improving practicability and durability, enhancing toughness and mechanical properties

Active Publication Date: 2019-11-22
广州思奇高分子材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the invention provides a phosphate ester type epoxy resin-nano clay hydrogel and its preparation method, which solves the problem of reducing the water content due to the nature of high molecular polymers and the plasticizing effect of water molecules. The breaking strength of the gel, leading to the problem of insufficient toughness and poor mechanical properties of the hydrogel material,
[0006] At the same time, it solves the problem of modifying the hydrogel with inorganic materials and reducing the hydrophilicity of the hydrogel.

Method used

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preparation example Construction

[0027] In order to achieve the above object, the present invention provides the following technical scheme: a phosphate ester type epoxy resin-nanoclay hydrogel and its preparation method, comprising the following formulation raw materials in parts by weight: 10-13 parts of hydrogenated bisphenol A , 15-18 parts of epichlorohydrin, 5-8 parts of alkalizing agent, 6-9 parts of 1-naphthyl phosphate, 0.3-0.6 parts of esterification catalyst, 34-53 parts of ultrapure water, 0.5-2 parts of sealed Terminal agent, 2-4 parts of functional additives, 0.2-0.4 parts of initiator, 8-11 parts of nanoclay, the preparation method includes and the following experimental drugs: distilled water, ethylene glycol, ethyl acetate, and the structural formula of hydrogenated bisphenol A is Its mass fraction is 96.2%, and the structural formula of epichlorohydrin is Its mass fraction is ≥98.5%, the alkalizing agent is sodium hydroxide, wherein the mass fraction of NaOH is ≥95.5%, the structural formu...

Embodiment 1

[0031] (1) Prepare phosphate ester type epoxy resin: pass into N in the 2000mL three-neck bottle 2 Or Ar inert gas, add 800mL of distilled water and 600mL of ethylene glycol to the three-necked bottle, weigh 10 parts of hydrogenated bisphenol A and 15 parts of epichlorohydrin into the three-necked bottle, stir well, and slowly add 5 parts of alkali Put the three-necked bottle in a constant temperature oil bath and heat it to 70°C, stir it at a constant speed under a magnetic stirrer, and react for 5 hours. Add 6 parts of 1-naphthyl phosphate and 0.3 parts of esterification catalyst dicyclohexylcarbodiimide into the three-necked bottle, and raise the temperature of the oil bath to 85°C and stir at a constant speed for 12 hours. Transfer the material to the separatory funnel, add 800mL ethyl acetate, let stand and extract, take the ethyl acetate organic phase and add 500mL distilled water to extract twice, take the ethyl acetate organic phase and slowly add anhydrous sodium sulf...

Embodiment 2

[0034] (1) Prepare phosphate ester type epoxy resin: pass into N in the 2000mL three-neck bottle 2 Or Ar inert gas, add 800mL distilled water and 600mL ethylene glycol to the three-necked bottle, weigh 11 parts of hydrogenated bisphenol A and 16 parts of epichlorohydrin into the three-necked bottle, stir well, and slowly add 5 parts of alkali Put the three-necked bottle in a constant temperature oil bath and heat it to 70°C, stir it at a constant speed under a magnetic stirrer, and react for 6 hours. Add 6 parts of 1-naphthyl phosphate and 0.4 parts of esterification catalyst dicyclohexylcarbodiimide into the three-necked bottle, and raise the temperature of the oil bath to 85°C and stir at a constant speed for 15 hours. Transfer the material to the separatory funnel, add 800mL ethyl acetate, let stand and extract, take the ethyl acetate organic phase and add 500mL distilled water to extract twice, take the ethyl acetate organic phase and slowly add anhydrous sodium sulfate un...

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Abstract

The invention relates to the technical field of hydrogel composite materials, and discloses the phosphate type epoxy resin-nano clay hydrogel and a preparation method thereof. The phosphate type epoxyresin-nano clay hydrogel comprise the following formula raw materials of hydrogenated bisphenol A, epoxy chloropropane, an alkalizing agent, 1-naphthyl phosphate, an esterification catalyst, the ultrapure water, an end-capping reagent, a functional additive, an initiator and 8-11 parts of nano clay. The preparation method of the phosphate type epoxy resin-nano clay hydrogel comprises the following steps of adding the 1-naphthyl phosphate,carrying out the esterification reaction on the phosphate group and the hydroxyl of the epoxy resin to generate the phosphate-generating epoxy resin, whereinthe phosphate ester contains a large amount of hydrophilic hydroxyl-OH, so that the epoxy resin has better hydrophilicity, and the water absorption property and the water retention property of the hydrogel are improved. Meanwhile, the -OH groups and the ether bonds in the epoxy resin form the hydrogen bonds with high chemical energy, so that the chemical stability of the epoxy resin is better, the phase transition temperature of the hydrogel is greatly increased, and the thermal stability of the hydrogel material is enhanced.

Description

technical field [0001] The invention relates to the technical field of hydrogel composite materials, and specifically relates to a phosphate ester type epoxy resin-nano clay hydrogel and a preparation method thereof. Background technique [0002] Hydrogel is a gel with water as the dispersion medium. A part of hydrophobic groups and hydrophilic residues are introduced into the water-soluble polymer with network crosslinked structure. The hydrophilic residues combine with water molecules to connect water molecules in the The cross-linked polymer with hydrophobic residues that swell with water inside the network is a polymer network system that is soft in nature, can maintain a certain shape, and can absorb a large amount of water. Any water-soluble or hydrophilic polymer , through a certain chemical cross-linking or physical cross-linking, can form hydrogels, these polymers can be divided into natural and synthetic two categories according to their sources, natural hydrophili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/14C08G59/06C08L63/00C08K3/34C08J3/075
CPCC08G59/1488C08G59/063C08J3/075C08K2201/011C08J2363/00C08K3/346
Inventor 周科
Owner 广州思奇高分子材料技术有限公司
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