FOAMED THERMOPLASTIC POLYURETHANE PARTICLE, PREPARATION METHOD FOR SAME, AND APPLICATION THEREOF
申请人:Miracll Chemicals Co., Ltd.
公开号:EP3109280A1
公开(公告)日:2016-12-28
The present invention relates to expanded thermoplastic polyurethane beads, a preparation method for same, and an application thereof. The expanded thermoplastic polyurethane beads consists of components of the following parts by weight: 100 parts of a thermoplastic polyurethane, 1-10 parts of a cell size stabilizer, and 1-35 parts of a melt viscosity modifier. The preparation method for the expanded thermoplastic polyurethane beads is also disclosed. The bead is produced by employing a volatile blowing agent to immerse the thermoplastic polyurethane, comprising the pore size stabilizer and the melt viscosity modifier, in an aqueous suspension, and is then followed by the foaming process. Utilization of the expanded thermoplastic polyurethane beads of the present invention allows for preparation of a foam product. The expanded thermoplastic polyurethane beads prepared per the present invention has uniform cell sizes and a high product yield. At the same time, the expanded thermoplastic polyurethane bead provides a great sintering performance even at a relatively low vapor pressure, a molded foam product has a small deformation, a low dimensional shrinkage ratio relative to a mold, great dimensional stability, and an aesthetically appealing appearance.
本发明涉及膨胀热塑性聚氨酯珠、其制备方法及其应用。发泡热塑性聚氨酯珠由以下重量份数的组分组成:100 份热塑性聚氨酯、1-10 份细胞尺寸稳定剂和 1-35 份熔体粘度调节剂。此外,还公开了发泡热塑性聚氨酯珠的制备方法。该珠子是通过使用挥发性发泡剂将包含孔径稳定剂和熔体粘度调节剂的热塑性聚氨酯浸入水性悬浮液中,然后进行发泡工艺制成的。利用本发明的发泡热塑性聚氨酯珠可以制备泡沫产品。根据本发明制备的发泡热塑性聚氨酯珠具有均匀的细胞尺寸和较高的产品产量。同时,发泡热塑性聚氨酯珠即使在相对较低的蒸汽压下也具有很好的烧结性能,模塑泡沫产品变形小,相对于模具的尺寸收缩率低,尺寸稳定性好,外观美观。