A method for preparing high-temperature resistant melamine molding compound is characterized in that it comprises the following steps:

 (1) Preparation of melamine formaldehyde resin: 36.8% by mass formaldehyde solution and melamine are mixed in a vacuum environment at a mass ratio of 2.0:1 Put it into a stainless steel reaction kettle, adjust the pH of the above mixed solution to 8-9 with 10% mass fraction of PHA regulator, then add triethanolamine, the reaction temperature will rise to 90-98℃ and react for 120 minutes at high temperature to prepare melamine formaldehyde resin;

 (2) Preparation of melamine mold pellets. Put the melamine formaldehyde resin and α-wood pulp fiber in step (1) into a vacuum kneader, and then add high-temperature latent curing agent, PB diluent, color paste, and zinc stearate Keep the temperature at 40℃ and stir for 30min. After dispersion, enter the oven to dry to obtain 0.5-1.5cm popcorn-shaped melamine mold pellets;

 (3) Make melamine molding compound powder and weigh the popcorn-shaped melamine in step 2 The mold particles are loaded into a ball mill, and the finishing powder, brightening agent, and calcium carbonate are added for blending and dispersing for 10 hours. The powder is sieved with an 80-mesh sieve to obtain the finished product.