Melamine-based nitrogen and phosphorus-containing compound, preparation method and application thereof, and flame-retardant epoxy resin composition of melamine-based nitrogen and phosphorus-containing compound
A melamine-based and melamine-based benzene technology is applied in the field of melamine-based nitrogen-containing phosphorus compounds and can solve the problems of flammability of epoxy resins and the like
Active Publication Date: 2021-04-20
CHINA PETROLEUM & CHEM CORP +1
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Abstract
The invention discloses a melamine-based nitrogen and phosphorus-containing compound as well as a preparation method and application thereof. The method comprises the following steps: firstly, carrying out condensation reaction on raw materials including melamine, paraformaldehyde and aromatic phenol to prepare a melamine benzoxazine intermediate, and then reacting the intermediate with DOPO to obtain the compound. The compounds are useful as flame retardants for epoxy resins. The method is cheap in raw materials, wide in source, simple in process, efficient, safe, environmentally friendly and beneficial to batch production. The flame retardant overcomes the defects that a traditional flame retardant is large in combustion smoke, pollutes the environment, is poor in compatibility, is easy to separate out and the like. When the flame retardant is added into epoxy resin, the flame retardant property of an epoxy resin cured product can be remarkably improved, and when the addition amount of P in the epoxy resin reaches 1.0 wt%, the vertical combustion grade reaches UL94 V-0 grade, the limit oxygen index is 35-40, the charring rate at 800 DEG C reaches 23-27%, and the glass-transition temperature reaches 130-137 DEG C.
Application Domain
Group 5/15 element organic compounds
Technology Topic
ParaformaldehydeFlame resistance +10
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PUM
Property | Measurement | Unit |
Glass transition temperature | 135.0 | °C |
Glass transition temperature | 137.0 | °C |
Glass transition temperature | 132.0 | °C |
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