Polymer-based resin compositions derived from cellulose and articles made using these compositions
申请人:Eastman Chemical Company
公开号:US10919984B2
公开(公告)日:2021-02-16
An injection molded article comprising a thin-walled body portion formed from a polymer-based resin derived from cellulose, wherein the thin-walled body portion comprises:
i. a gate position;
ii. a last fill position;
iii. a flow length to wall thickness ratio greater than or equal to 100, wherein the flow length is measured from the gate position to the last fill position; and
iv. a wall thickness less than or equal to about 2 mm; and
wherein the polymer-based resin has an HDT or at least 95° C., a bio-derived content of at least 20 wt %, and a spiral flow length of at least 3.0 cm, when the polymer-based resin is molded with a spiral flow mold with the conditions of a barrel temperature of 238° C., a melt temperature of 246° C., a molding pressure of 13.8 MPa, a mold thickness of 0.8 mm, and a mold width of 12.7 mm.
一种注塑成型品,包括由纤维素衍生的聚合物基树脂形成的薄壁主体部分,其中薄壁主体部分包括: 1:
i. 一个浇口位置
最后填充位置
流量长度与壁厚之比大于或等于 100,其中流量长度是从闸门位置到最后填充位置的测量值;以及
壁厚小于或等于约 2 毫米;以及
其中聚合物基树脂的 HDT 至少为 95°C,生物源含量至少为 20 wt %,螺旋流动长度至少为 3.0 cm,当聚合物基树脂在筒体温度为 238°C、熔体温度为 246°C、成型压力为 13.8 MPa、模具厚度为 0.8 mm 和模具宽度为 12.7 mm 的条件下用螺旋流动模具成型时。