Preparation method of large-size medical glass carbon block material

The invention discloses a preparation method of a large-size medical glassy carbon block material, which is characterized in that nano-diamond is compounded with glassy carbon micro powder, and the nano-diamond is bonded with glassy carbon particles by utilizing the high-energy state of the nano-diamond when the nano-diamond is converted from diamond to graphite onion at a certain temperature and pressure. The porosity and pore size distribution of a sintered body are controlled by controlling parameters such as the particle size and proportion of the nano-diamond and the glassy carbon, the sintering temperature and pressure and the like. The prepared glassy carbon block material is controllable in porosity and aperture, and can be used as a medical material such as a tissue engineering material. 本发明公布了一种大尺寸医用玻璃碳块体材料的制备方法，采用纳米金刚石复合玻璃碳微粉，利用纳米金刚石在一定温度和压力下由金刚石向石墨洋葱转变时的高能态，实现与玻璃碳颗粒的成键。通过控制纳米金刚石和玻璃碳粒径和比例，烧结温度和压力等参数控制烧结体的孔隙率和孔径分布。本发明制备的玻璃碳块体材料孔隙率和孔径可控，可以作为组织工程材料等医用材料使用。