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1. 发明授权

US07790841B1 Increasing the rate of crystallization of engineering thermoplastics 有权
标题翻译：提高工程热塑性塑料的结晶率
公开(公告)号：US07790841B1
公开(公告)日：2010-09-07
申请号：US12079089
申请日：2008-02-06
申请人： Gregory R. Yandek , Darrell Marchant , Joseph M. Mabry , Mark B. Gruber , Mark A. Lamontia
发明人： Gregory R. Yandek , Darrell Marchant , Joseph M. Mabry , Mark B. Gruber , Mark A. Lamontia
IPC分类号： C08F6/00 , C08G64/00
CPC分类号： B82Y30/00 , C08J3/201 , C08J3/2056 , C08K5/0083 , C08K5/5419 , Y10T428/2982 , Y10T428/2993
摘要： Method for enhancing the crystallization rates of engineering thermoplastics through the use and incorporation of particulate additives with dimensions on the order of 10-1000 nm is described. The presence of nanoparticles at concentrations of, e.g., less than 10 weight percent of the composition, reduces the viscosity of the thermoplastics as compared to the respective homopolymer, thereby increasing polymer chain transport and diffusion to the crystallizing growth front. The prescription of this technology has been shown to reduce crystallization half times of some engineering thermoplastics by as much as 40 percent at optimal crystallization temperatures, an effect that is magnified as the temperature is reduced towards the glassy state of the amorphous phase. Nano-modified engineering thermoplastics with rapid crystallization kinetics and relatively low viscosities can be utilized in component fabrication processes that require rapid processing times, e.g., for the sake of cost efficiency.
摘要翻译：描述了通过使用和结合尺寸在10-1000nm的颗粒添加剂来提高工程热塑性塑料的结晶速率的方法。相对于各均聚物，存在的纳米颗粒的浓度例如低于组合物的10重量％，降低了热塑性塑料的粘度，从而增加了聚合物链的转运和扩散到结晶生长前沿。已经表明，该技术的处方已经证明，在最佳结晶温度下，将一些工程热塑性塑料的结晶半结晶减少多达40％，随着温度朝着非晶相的玻璃状态而减小的效应被放大。具有快速结晶动力学和相对低粘度的纳米改性工程热塑性塑料可用于需要快速加工时间的部件制造工艺中，例如为了成本效率。

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