公开(公告)号：EP1425149A1

公开(公告)日：2004-06-09

申请号：EP02785117.9

申请日：2002-09-11

申请人： Dow Corning Iberica S.A.

发明人： RAMON LOPEZ, Anton ,  UBALDO, Colombo

IPC分类号： B29C47/10 ,  B29C47/38

CPC分类号： B29C47/38 ,  B29C47/0004 ,  B29C47/0009 ,  B29C47/1045 ,  B29C47/1063 ,  B29C47/366 ,  B29C47/369 ,  B29K2083/00 ,  B29K2105/0005 ,  B29K2105/16

摘要： The invention relates to a single screw extruder having a means for the introduction of additives and to a method of introducing additives into a silicone rubber composition in the aforementioned extruder. A single screw extruder (1) comprising an elongate barrel (100) having an inlet (7) for introducing a polymer into the extruder and an outlet (5) for discharging extruded polymer from the barrel (100), a rotatable screw (6) axially disposed within the barrel (100) for advancing polymer in the extruder from the inlet (7) to the outlet (5), one or more additive introduction means (2) for introducing one or more additives at one or more predefined positions along the barrel (100) of the single screw extruder (1) between the inlet (7) and the outlet (5). Immediately upstream of the or each additive introduction means (2) there is provided, on or around the screw (6), a plug (12) having a plurality of apertures (20, 20a) which is adapted such that, in use, the only way for polymer or polymer/additive mixture to move downstream of the plug (12) is by passing through the apertures and that, having passed through an aperture, the polymer or polymer/additive mixture is subjected to a reduction in pressure and is simultaneously mixed with an additive from the one or more additive introduction means (2), prior to transportation of the resulting polymer additive mixture to the outlet (5). The extruder is typically used for the addition of additives such as cross-linkers and/or coloured pigments into high consistency silicone rubbers.

摘要翻译： 本发明涉及具有用于引入添加剂的装置的单螺杆挤出机以及在前述挤出机中将添加剂引入硅橡胶组合物中的方法。 一种单螺杆挤出机（1），包括具有用于将聚合物引入挤出机的入口（7）和用于将挤出的聚合物从桶（100）排出的出口（5）的细长筒（100），可旋转螺杆（6） 轴向布置在所述筒体（100）内用于将所述挤出机中的聚合物从所述入口（7）推进到所述出口（5）;一个或多个添加剂引入装置（2），用于在沿着所述挤出机的一个或多个预定位置处引入一种或多种添加剂 在入口（7）和出口（5）之间的单螺杆挤出机（1）的桶（100）。 紧靠该或每个添加剂引入装置（2）的上游，在螺杆（6）上或周围设置具有多个孔（20,20a）的塞（12），该孔适于使得在使用中 聚合物或聚合物/添加剂混合物向塞子（12）下游移动的唯一方式是穿过孔，并且已经通过孔的聚合物或聚合物/添加剂混合物受到压力降低，并且同时 在将所得聚合物添加剂混合物输送到出口（5）之前，将其与来自一个或多个添加剂引入装置（2）的添加剂混合。 挤出机通常用于将添加剂如交联剂和/或有色颜料加入高浓度硅橡胶中。