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A kind of preparation method of nano-modified bisphenol A type epoxy resin

A technology of epoxy resin and nano-modification, which is applied in the field of preparation of nano-in-situ modification, and can solve problems such as inability to mass-produce, different interface properties, and poor compatibility

Active Publication Date: 2021-03-30
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the different interface properties and poor compatibility between inorganic nanoparticles and epoxy resin, the surface energy of rigid particles is in a thermodynamically unstable state, and they are easily aggregated into clusters. Separation and other issues
In addition, the nanomaterials themselves have also restricted the popularization and application of nano-modified epoxy resins due to the complex preparation process, high price, and inability to mass-produce.

Method used

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  • A kind of preparation method of nano-modified bisphenol A type epoxy resin
  • A kind of preparation method of nano-modified bisphenol A type epoxy resin
  • A kind of preparation method of nano-modified bisphenol A type epoxy resin

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Experimental program
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Effect test

Embodiment 1

[0017] Preparation of 1% Nickel Doped Modified Bisphenol A Epoxy Resin

[0018] Add 0.05 g of 1% nickel-doped modified titanium dioxide precursor powder prepared by organic homogeneous deposition method, 28.02 g of epichlorohydrin solution, and 22 g of bisphenol A particles into a 250 ml container equipped with a stirrer, a dropping funnel, and a thermometer in sequence. In a three-necked flask; heat with a water bath, raise the temperature to 70°C, and stir the solution to fully dissolve the bisphenol A particles and 1% nickel-doped modified titanium dioxide precursor powder, and disperse them in the epichlorohydrin solution. At 70°C, Keep the temperature constant, add 40ml of 20% sodium hydroxide solution dropwise, control the dropping speed for 30min, then continue to heat up to 75-80°C and continue the reaction for 1.5-2h, stop heating, cool to room temperature, add 60ml of benzene solution, stir After the solution is fully dissolved, move it into a separatory funnel. Afte...

Embodiment 2

[0020] Preparation of 1% Nickel Doped Modified Bisphenol A Epoxy Resin

[0021] 0.05 g of the 1% nickel-doped modified titanium dioxide precursor powder prepared by the organic homogeneous deposition method was stirred and dispersed in 40 ml of 20% sodium hydroxide solution, and the modified titanium dioxide precursor powder was suspended in the sodium hydroxide solution to Wait for the subsequent addition; then add 28.02g of epichlorohydrin solution and 22g of bisphenol A particles into a 250ml three-necked flask equipped with a stirrer, dropping funnel and thermometer; Fully dissolve bisphenol A particles and 1% nickel-doped modified titanium dioxide precursor powder, disperse in epichlorohydrin solution, keep the temperature constant at 70°C, add 40ml of 1% nickel-doped modified titanium dioxide dropwise Precursor powder, sodium hydroxide solution with a concentration of 20%, control the dropping speed for 30 minutes, then continue to heat up to 75-80°C and continue to reac...

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Abstract

The invention discloses a preparation method of nano modified bisphenol-A epoxy resin. According to the method, a modified titanium dioxide precursor is prepared by an organic homogeneous phase deposition method, is powdered, and can be automatically dispersed in an organic solvent and water and reassembled into modified titanium dioxide. According to the synthesis method of the bisphenol-A epoxy resin, the modified titanium dioxide precursor is prepared by the organic homogeneous phase deposition method and dispersed in a reactor, namely epoxy chloropropane or sodium hydroxide, for in-situ polymerization modification on the bisphenol-A epoxy resin, so that the prepared resin is combined with modified inorganic nanoparticles in an in-situ reaction process.

Description

technical field [0001] The invention relates to a bisphenol A type epoxy resin coating, which belongs to the technical field of coatings, and in particular to a preparation method for performing nanometer in-situ modification on a bisphenol A type epoxy resin during the resin preparation process. Background technique [0002] Epoxy resin refers to a high molecular prepolymer containing two or more epoxy groups and containing fatty acid, alicyclic segment or aromatic segment in the main chain. Bisphenol A epoxy resin is favored by users because of its low cost and large output. Bisphenol A type epoxy resin has good manufacturability, can be used in conjunction with various curing agents and additives, and can design a variety of formulas to meet various requirements; it has low pressure molding, stable performance of cured products, good adhesion, Strong corrosion resistance and good chemical resistance. [0003] However, it is found in people's daily use that it has disadv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G59/06C08K3/22C08K3/08
CPCC08G59/063C08K3/08C08K3/22C08K2003/0862C08K2003/2241C08K2201/011
Inventor 王珅韩松郭思瑶马佳香刘聪刘力宁
Owner NORTHEAST FORESTRY UNIVERSITY
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