公开(公告)号：US5681887A

公开(公告)日：1997-10-28

申请号：US678117

申请日：1996-07-11

申请人： Teruaki Ikeda ,  Tomio Akiyoshi

发明人： Teruaki Ikeda ,  Tomio Akiyoshi

IPC分类号： B29C43/02 ,  B29C70/10 ,  B29K23/00 ,  B29K105/06 ,  C08K7/00 ,  C08K7/14 ,  C08L23/10 ,  C08J5/10 ,  C08K3/40

CPC分类号： C08K7/14 ,  C08L23/12 ,  Y10T156/1044

摘要： A method of stamping composite sheets to prepare a molding. The method including heating a plurality of composite sheets and stamping the heated composite sheets in a mold. Each composite sheet comprising a propylene-based resin and a glass fiber mixture. The glass fiber mixture includes short glass fibers and long glass fibers. The weight ratio of the short glass fibers to the long glass fibers in the glass fiber mixture is 2/1-1/2. The weight ratio of the propylene-based resin to the glass fiber mixture is 85/15-50/50. The melt index of the propylene-based resin in the composition making up the composite sheets is 20 g/10 minutes or greater. The resultant composite sheets can be easily handled during the molding process, and exhibit desirable mechanical strength. In addition, the glass fibers fill even the corners of the moldings, thus improving the strength of the edges, and provide uniform mold shrinkage factors, with a low occurrence of deformation and cracking. Furthermore, the resultant composite sheets have desirable shaping properties.

摘要翻译： 一种压制复合片材以制备模制品的方法。 该方法包括加热多个复合片材并在模具中冲压加热的复合片材。 每个复合片材包含丙烯类树脂和玻璃纤维混合物。 玻璃纤维混合物包括短玻璃纤维和长玻璃纤维。 玻璃纤维混合物中短玻璃纤维与长玻璃纤维的重量比为2 / 1-1 / 2。 丙烯类树脂与玻璃纤维混合物的重量比为85 / 15-50 / 50。 构成复合片材的组合物中丙烯类树脂的熔融指数为20g / 10分钟以上。 所得到的复合片材可以在成型过程中容易地处理，并且表现出期望的机械强度。 此外，玻璃纤维甚至填充模制品的角部，从而提高边缘的强度，并提供均匀的模具收缩因子，并且发生变形和开裂的发生率低。 此外，所得的复合片材具有期望的成形性能。

公开(公告)号：US4565844A

公开(公告)日：1986-01-21

申请号：US653509

申请日：1984-09-21

申请人： Toshikazu Kasahara ,  Toshifumi Kajiya ,  Tomio Akiyoshi

发明人： Toshikazu Kasahara ,  Toshifumi Kajiya ,  Tomio Akiyoshi

IPC分类号： C08K3/34 ,  C08K5/00 ,  C08K5/098 ,  C08K5/1575 ,  C08K13/02 ,  C08L23/00 ,  C08L51/00 ,  C08L51/02 ,  C08L53/00 ,  C08L77/00 ,  C08L101/00 ,  C08K5/10 ,  C08K5/15 ,  C08L23/16

CPC分类号： C08K5/098 ,  C08K3/34 ,  C08K5/1575 ,  H01L2924/01078

摘要： The propylene-ethylene block copolymer composition of the invention is excellent in transparency as well as in stiffness and low temperature impact strength.The copolymer composition of the present invention comprises (a) from 0.01 to 1.0 part by weight of a nucleating agent and (b) from 0.01 to 3.0 parts by weight of talc having an average particle size of not more than 10 microns, admixed in 100 parts by weight of propylene-ethylene block copolymer. Said propylene-ethylene block copolymer was formed in a multi-stage polymerization process wherein the ethylene content of the copolymer formed at the propylene-ethylene copolymerization stage is from 5 to 40% by weight based on the total polymerization amount of the copolymer formed at said propylene-ethylene copolymerization stage.

摘要翻译： 本发明的丙烯 - 乙烯嵌段共聚物组合物的透明性以及硬度和低温冲击强度都优异。 本发明的共聚物组合物包含（a）0.01至1.0重量份的成核剂和（b）0.01至3.0重量份的平均粒径不大于10微米的滑石，其混合在100 重量份的丙烯 - 乙烯嵌段共聚物。 所述丙烯 - 乙烯嵌段共聚物是在多阶段聚合方法中形成的，其中在丙烯 - 乙烯共聚阶段形成的共聚物的乙烯含量为5-40％（重量），基于在所述 丙烯 - 乙烯共聚阶段。