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Bio-based flame-retardant curing agent for epoxy resin as well as preparation method and application thereof

A bio-based technology for epoxy resin, applied in the field of bio-based flame retardant curing agent for epoxy resin and its preparation, to achieve the effects of less by-products, lower production costs and high yield

Inactive Publication Date: 2018-09-21
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the use of phytic acid and its derivatives as flame retardants or flame retardant curing agents for epoxy resins. In addition, there are no reports on the use of other bio-based materials for curing and flame retardant epoxy resins.

Method used

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  • Bio-based flame-retardant curing agent for epoxy resin as well as preparation method and application thereof
  • Bio-based flame-retardant curing agent for epoxy resin as well as preparation method and application thereof
  • Bio-based flame-retardant curing agent for epoxy resin as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] At room temperature, add 0.05 mol of phytic acid into 50 ml of water, add 0.6 mol of ethylenediamine while stirring, and continue the reaction for 30 minutes after the addition is completed. After the reaction, the solvent water is removed to obtain a white solid powder, which is the final bio-based flame retardant curing agent product, and its structural formula is shown in (1).

[0031]

Embodiment 2

[0033] At 80°C, add 0.05 mol of phytic acid into 50 ml of water, add 0.3 mol of diethylenetriamine (DETA) while stirring, and continue the reaction for 120 minutes after the addition is complete. After the reaction, remove the solvent to obtain a yellow solid The powder is the final bio-based flame retardant curing agent product (PA-DETA), and its structural formula is shown in (2).

[0034]

Embodiment 3

[0036] At 40° C., 0.05 mol of phytic acid was added to 50 ml of methanol, 0.3 mol of triethylenetetramine was added while stirring, and the reaction was continued for 60 minutes after the addition was completed. After the reaction, the solvent is removed to obtain a yellow solid powder, which is the final bio-based flame retardant curing agent product, and its structural formula is shown in (3).

[0037]

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Abstract

The invention relates to a bio-based flame-retardant curing agent for epoxy resin as well as a preparation method and application thereof. The flame-retardant curing agent is prepared by reacting phytic acid and poly-amino compounds in one step, and has the effects of a flame retardant and a curing agent. When the bio-based flame-retardant curing agent is used for the epoxy resin, excellent thermal properties and insulating property of the epoxy resin are maintained, and the curing agent has excellent flame-retardant property. The bio-based flame-retardant curing agent is wide in application,and is particularly applied to the field of electronics and electrical appliances.

Description

technical field [0001] The invention relates to the technical field of curing agents and flame retardants, in particular to a bio-based flame retardant curing agent for epoxy resin and its preparation method and application. Background technique [0002] Due to its excellent mechanical properties, adhesive properties, dimensional stability, high temperature resistance, chemical corrosion resistance and electrical insulation properties, epoxy resin is widely used in aerospace, coatings, adhesives, electronic appliances and other fields. It has become the most widely used resin in polymers. However, ordinary epoxy resin is flammable, and its limiting oxygen index is very low (about 20%), so it is a flammable material. This defect also greatly limits the application of epoxy resin. Therefore, it is of great significance to endow epoxy resin with better flame retardancy. [0003] Adding a flame retardant can give epoxy resin a certain flame retardancy, but the addition of flam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G59/40C08G59/50C08L63/00
CPCC08G59/4071C08G59/504C08G59/5073C08L63/00
Inventor 潘志权朱宗民周红程清蓉
Owner WUHAN INSTITUTE OF TECHNOLOGY
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