Compared with that of furane resin bonded sand,the feasibility of phenol resin bonded sand in forming a uniform coating layer in the inside mould surface is studied as well.

本文分析研究了砂中的成条件及光洁内面的形成机理，并对比研究了覆和呋喃自硬砂内面形成均匀覆砂层的可行性。

The result shows that it can effectively prevent the flammable liquid volatilizezing from the solid alcohol fuel by coating polymer on surface for the environment - friendly purpose.

结,通过高分子覆工艺,可以有效地抑制固体燃料中可燃性液体的挥发,达到安全环保的作用。