3 results about "Piperazine phosphate" patented technology

The invention relates to the field of flame retardants, and provides a novel halogen-free flame retardant for PC (polycarbonate) plastics as well as a preparation method and application thereof, and the novel halogen-free flame retardant comprises the following raw materials in parts by weight: 65-80 parts of piperazine phosphate, 10-20 parts of an inorganic zinc compound and 0.3-1.5 parts of a polyether surfactant. The novel halogen-free flame retardant provided by the invention has excellent dispersity when being applied to PC plastic, so that the PC plastic has the characteristic of high flame retardance.

The invention discloses a halogen-free flame retardant TCPA and a preparation method and application thereof.The preparation method comprises the steps that phosphoric acid tri (2-chloropropyl) ester and piperazine monomers react in an alkaline environment to obtain the halogen-free flame retardant TCPA, and then orthophosphoric acid and the piperazine monomers are subjected to a polymerization reaction to prepare piperazine phosphate. The halogen-free flame retardant TCPA disclosed by the invention has relatively excellent flame retardant property and good thermal stability; and the flame-retardant polymer composite material can be prepared with a polymer, the mechanical property is improved, and the initial decomposition temperature and carbon residue of a matrix are improved, so that the thermal stability of the matrix is improved.

This invention discloses a vacuum drying apparatus for preparing piperazine phosphate, comprising a support arm A, a support arm B, a stirring tank, a reciprocating assembly, a drying assembly, and a stirring assembly. The reciprocating assembly includes an electric push rod and an output shaft, the electric push rod passing through the stirring tank via the output shaft, and the output shaft being movable inside the stirring tank. The drying assembly includes heating rods, both fixed to support arms A and B. The stirring assembly includes a rotating column and a stirring rod, the rotating column being fixedly connected to the stirring rod. This invention uses the reciprocating assembly to drive the drying and stirring assemblies to dynamically traverse the material area, enabling comprehensive material rotation, preventing material accumulation and clumping, and ensuring comprehensive drying of the material. This ensures that the surface and interior of the piperazine phosphate material are heated simultaneously, resulting in uniform drying and guaranteeing product quality.