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Phosphorus-silicon modified aliphatic amine curing agent as well as preparation method and application thereof

An aliphatic amine and curing agent technology, which is applied in the field of phosphosilicon modified aliphatic amine curing agent and its preparation, can solve the problem that flame retardants cannot effectively improve the smoke suppression performance of epoxy resins, and the toughness and environmental protection of epoxy resins are not considered. Oxygen resin is difficult to apply and other problems, to achieve the effect of increasing the glass transition temperature, controllable cost, and improving carbon-forming properties

Pending Publication Date: 2022-08-09
浙大宁波理工学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, its flame retardant cannot effectively improve the smoke suppression performance of epoxy resin, and the increase of filling amount has a great influence on the mechanical properties, making it difficult to apply epoxy resin
Chinese patent application text (publication number: CN111116989A) discloses a reactive flame retardant and its preparation method and application. The invention reacts dimethyl methyl phosphate, terephthalaldehyde with a catalyst and a solvent to obtain the described flame retardant. Reactive flame retardants are used to flame-retardant epoxy resins, but they do not consider the toughness of epoxy resins, resulting in limited application fields

Method used

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  • Phosphorus-silicon modified aliphatic amine curing agent as well as preparation method and application thereof
  • Phosphorus-silicon modified aliphatic amine curing agent as well as preparation method and application thereof
  • Phosphorus-silicon modified aliphatic amine curing agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]Dissolve 24 g of polyethyleneimine in 200 mL of tetrahydrofuran, add 11 g of triethylamine and 24 g of vinyldichlorosilane in sequence under stirring conditions, react at 20 °C for 3 h, filter, and place the filtrate in a rotary evaporator for spinning. Steam, the temperature is 50 °C, and the time is 1 h to obtain a silicon-containing fatty amine curing agent; 10 g of the silicon-containing fatty amine curing agent is dissolved in 100 ml of ethanol, 3.24 g of DOPO are added, heated to 70 ° C, stirred for 12 hours, and then allowed to stand for cooling. Filtration, the filter residue was dissolved in deionized water and alcohol, and then placed in a rotary evaporator for rotary evaporation at a temperature of 50 °C and a time of 1 h to obtain phosphosilicon-modified aliphatic amines containing 5% phosphorus and 5% silicon. Hardener.

Embodiment 2

[0048] Compared with Example 1, the difference is that the mass ratio of silicon-containing fatty amine curing agent and DOPO is 1:4. A phospho-silicon modified aliphatic amine curing agent containing 1% phosphorus and 1% silicon was obtained.

Embodiment 3

[0050] Compared with Example 1, the difference is that the mass ratio of silicon-containing fatty amine curing agent and DOPO is 4:1. A phospho-silicon modified aliphatic amine curing agent containing 3% phosphorus and 3% silicon was obtained.

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Abstract

The invention relates to a phosphorus-silicon modified aliphatic amine curing agent as well as a preparation method and application thereof, and belongs to the technical field of flame-retardant polymer materials. The invention discloses a phosphorus-silicon modified aliphatic amine curing agent. The curing agent contains 0.5 to 30 percent of phosphorus and 0.1 to 30 percent of silicon, the invention also discloses a preparation method of the phosphorus-silicon modified aliphatic amine curing agent and a flame-retardant epoxy resin cured product comprising epoxy resin and the phosphorus-silicon modified aliphatic amine curing agent.

Description

technical field [0001] The invention belongs to the technical field of flame retardant polymer materials, and relates to a phosphosilicon modified aliphatic amine curing agent and a preparation method and application thereof. Background technique [0002] Epoxy resin is a thermosetting synthetic resin with excellent performance. It is a colorless and translucent thermosetting lightweight general-purpose plastic with excellent comprehensive properties, such as moisture and corrosion resistance, solvent and chemical resistance, excellent electrical and mechanical properties and The good adhesion to many substrates makes epoxy resin widely developed and applied in many fields such as adhesives, coatings, electronic and electrical materials, engineering plastics and composite materials. And epoxy resin is currently the most widely used thermosetting material, especially epoxy resin prepared with aliphatic amines as curing agent, because of its low curing temperature, short curin...

Claims

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Application Information

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IPC IPC(8): C08G59/50C08G73/02C08L63/00
CPCC08G59/504C08L63/00C08G73/0246C08L2201/02
Inventor 霍思奇郭正虹王炳涛方征平
Owner 浙大宁波理工学院