The invention discloses an
epoxy resin
flame retardance curing agent containing
phosphorus and
nitrogen and a preparation method of the
epoxy resin
flame retardance curing agent, and relates to a chemical curing agent and a preparation method thereof. Preparation raw materials comprise
phosphorus oxychloride, 1-oxy-phospha-4-
hydroxymethyl-2,6,7-trioxabicyclo[2.2.2]
octane, and m-xylylenediamine. The preparation method comprises the following two steps: firstly, ensuring that
phosphorus oxychloride (POCl3) and 1-oxy-phospha-4-
hydroxymethyl-2,6,7-trioxabicyclo[2.2.2]
octane (PEPA)react with each other in a certain condition, so as to generate
phosphorus containing intermediate; secondly, ensuring that the intermediate obtained in the first step and m-xylylenediamine are stirred and react with each other for a certain time with the leading of
inert gas, and carrying out filtering, washing and
drying to obtain white
solid. The curing agent has good compatibility with
epoxy resin, can be cured into a
whole body with epoxy resin, and is small in influence on the
mechanical property of a cured material, can not only serve as a curing agent for epoxy resin, but also effectively improve the
flame retardation of epoxy resin.