PW-1蜡基模料的性能研究

Properties of the PW-1 Pattern Materials

研究了以有机高分子聚合物PX为添加剂的PW 1蜡基模料在不同的压注温度下的性能 :抗弯强度、线收缩率、热稳定性 ,也测定了其熔点和灰分 ,同时制作了显微薄片试样 ,观察并对比了纯石蜡和PW 1模料的显微组织。结果表明 ,PW 1模料的显微组织与石蜡相比 ,晶粒大小均匀 ,组织细腻 ;在 5 7～ 5 9℃时 ,模料抗弯强度达 3 .65MPa、线收缩率为 0 .76%、热稳定性温度为 3 7℃、灰分为 0 .0 0 8% ,综合性能实现比较优化的组合。

The properties, including bending strength, linear contraction, thermal stability, melting point and ashes content, of the PW-1 type pattern materials with the organic macromolecular polymer Px as additive at different injection temperatures were measured.The microstructures of pure wax and PW-1 pattern material were observed. It was indicated that compared with pure wax, PW-1 pattern materials possess 3.65 MPa bending strength, 0.76% linear contraction, 37 ℃ thermal stability,0.008% ashes content at 57～59 ℃ homogeneous grain size and fine microstructure,optimization comprehensive properties are realized.