| 详细介绍：
现货供应COC ZEONEX 690R
COC 物性描述
(1)密度小，比PMMA和PC约低10%，有利于制品轻量化;
(2)饱和吸水率小，Arton吸水率远低于PMMA，不会产生因吸水导致物性下降的影响，
Zeonex，Zeonor和Apel则几乎不吸水;
(3)由于含有极性和异向性小的单体，因而为非晶型透明材料，双折射率小;
(4)属高耐热性透明树脂玻璃化温度达140~170℃，玻璃化温度是非晶型聚合物的耐热性
指标;
(5)容易注射成型;
(6)机械性能优良，拉伸强度，弹性模量比PC高;
(7)优良的复制性，故制品质量高;
(8)介电常数低，特别是高频性能好，是热塑性塑料中介电性能最好的材料;
(9)耐擦伤性良好，Arton铅笔硬度与PMMA相近，耐擦伤性是光学材料的一个重要性能指
标;
(10)Arton分子侧链有极性基团，与无机、有机材料粘接性好，易于密封;
典型应用范围
非晶型聚烯烃光学透明塑料主要用途:光学镜头、光学播音器、多边镜、角摸板用
保护膜，DVD碟片基材、大型显示器、背光导光板、 小型显示器前光导光板、光学半导
体、光纤和分析化学仪器用池和槽。
年关难过！杜邦宣布2016年初开始裁员1700人
杜邦和陶氏化学有很多相似或者可以说是重叠的业务部门，合并后进行业务重组这是无可避免的。纵观两家公司的历史，一旦涉及到重组随后而来的便是裁员。而近10年来，两家公司为了应对经济起伏以及缩减成本，曾有过不少的裁员行动。人事重整有助于降低成本、维持竞争力。而相关人员也透露，本次大规模裁员是形势所迫，也是合并重组带来的连锁反应。
北京时间30日凌晨，杜邦宣布计划2016年初在其总部所在的特拉华州裁员约1700人，此举措是该公司此前宣布的全球裁员10%计划的一部分。
On Dec. 11 — the same day that it unveiled its historic merger with Dow Chemical Co. — DuPont announced a global cost savings and restructuring plan that could result in the elimination of more than 5,000 jobs.
The restructuring plan will affect around 10 percent of DuPont’s global headcount of 53,000. Officials said in a Dec. 11 news release that the plan will save $700 million annually. It includes “a range of structural actions across all businesses and staff functions globally” and is designed “to operate more efficiently by further consolidating businesses and aligning staff functions more closely with the businesses.”
DuPont will record a pretax charge of $780 million in relation to the plan, including $650 million for employee separation costs and $130 million in asset-related charges and contract terminations.
The moves are the fourth round of massive job cuts announced by DuPont in the last seven years. The previous three moves eliminated 6,000 jobs. In December 2008, DuPont announced 2,500 job cuts, followed by 2,000 more in May 2009 and 1,500 more in October 2012.
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