摘要
经常有报道，木材粒子在木材／聚合物复合泡沫塑料中可以起成核点的作用。由于使用高木材含量，很难精确确定木材粒子的作用。本研究中，LDPE在双螺杆挤塑机上化学发泡，加入少量木材（0-5phr）来确定它们的作用。粒度使用45—61，104—125和180—210μm三组筛目尺寸来确定。正如所料，起成核剂作用的木材粒子大大减小了泡孔大小，并增加了泡孔密度。
It is usually reported that wood particles in wood/polymer composite foams can act as nucleating sites. Since ligh wood contents are used,it is difficult to determine exactly the effect of wood particles. In this study, LDPE was chemically foamed in a twin-screw extruder,and small amounts of wood （0-5phr）were added to determine their effect. Particle size was investigated by using three mesh sizes：45-61,104-125,and 180-210μm. As expected,wood particles acted as nucleating agents that substantially reduced cell size and increased cell density.
出处
《聚合物与助剂》
2008年第1期25-30,共6页
Polymer & Additives
