Nylon powder as well as preparation method and application thereof

The invention discloses nylon powder and a preparation method and application thereof, and the preparation method of the nylon powder comprises the following steps: reducing the temperature of a nylon hot solution to T1, and carrying out first nucleation-growth to form a first suspension; raising the temperature of the first suspension to T2, then reducing the temperature to T3, and carrying out second nucleation-growth to obtain a second suspension; wherein T2-T1 is smaller than or equal to 15 DEG C, and T2-T3 is smaller than or equal to 15 DEG C; continuously cooling the second suspension to form a precipitate; and carrying out post-treatment on the precipitate to obtain the nylon powder. The nylon powder prepared by the method is narrow in particle size distribution, large in apparent density and high in yield, and can well meet the use of the SLS technology. 本发明公开了一种尼龙粉末及其制备方法和应用，尼龙粉末的制备方法包括如下步骤：将尼龙热溶液的温度降至T1，进行第一次成核-生长，形成第一悬浮液；使所述第一悬浮液的温度升高至T2，而后降温至T3，进行第二次成核-生长，得到第二悬浮液；其中，T2-T1≤15℃，T2-T3≤15℃；继续对所述第二悬浮液进