Method for producing polyamide powder and polyamide powder

The invention discloses polyamide powder and a preparation method thereof, and relates to the technical field of high polymer material preparation. Comprising the following steps: spraying a polyamide melt with the viscosity of 500-10000 mPa.s under the pressure of 0.6-5 MPa, and blowing and atomizing the polyamide melt by using inert gas to obtain initial polyamide powder; by controlling the viscosity of the movement of the polyamide melt, the polyamide melt is controlled to be jetted and discharged when the molecular weight is lower, the polyamide melt with the lower molecular weight is small in viscosity and surface tension, the jetted polyamide melt is blown and cut into powder mist at a high speed by inert gas, and initial polyamide powder with uniform particle size distribution and smooth surface can be obtained; and a novel method is provided for preparing the polyamide powder. 本发明公开了一种聚酰胺粉末及其制备方法，涉及高分子材料制备技术领域。包括将粘度为500～10000mPa.s的聚酰胺熔体在0.6～5MPa的压力下喷射，并使用惰性气体对聚酰胺熔体吹扫雾化，得到初始聚酰胺粉末。通过控制聚酰胺熔体运动的粘度，以控制聚酰胺熔