COC什么塑料COC是什么材料COC是什么东西
供应商提醒您,COC是具有环状烯烃结构的非晶性透明共聚高分子物体。 具有与PMMA(聚甲基丙烯酸甲酯、丙烯酸树脂)相匹敌的光学性能以及具有高于PC(聚碳酸酯)的耐热性,还由于低吸水性而具有比PMMA和PC更加优良的尺寸稳定性等,在市场上获得了很高的评价。再有,改善水蒸汽气密性,增加刚性、耐热性,能赋予易切割性等优点,作为适合于用作传统材料的改性用材料,它在包装材料领域里的开发活动正在推进之中。 是一种基于独创的茂金属催化剂技术的高品质和高纯度非晶性环状树脂。在标准要求很严的医疗器械装置和检查诊断器具等医疗领域,作为高品质和高成本的石英玻璃和 PDMS(polydimethylsiloxane)等的替代材料, 具有最佳特性和性价比。欧洲的广大地区正在改用塑料来制作预充注射器以取代玻璃材料。预充注射器可改善制造过程中的破损废品率,减轻重量,不会产生金属类溶出物,同时还具有最佳的水蒸气阻隔性(长期保存性)以及不亚于玻璃的高透明性等优良特性,因此是玻璃材料的最佳替代材料。塑料瓶也保持着同样的特性,特别适合需要长期保存的场合
COC又称为环稀烃共聚物,由于COC材料没有不饱合双键和芳香结构,属于透明材料,透光达到93%,因些COC材料有高耐热特性,可用于以下用途:
1、药物输送:低溶出物和萃取物,低水传输
2、·预充式注射器,西林瓶,盒:
3、需要高温消毒的手术器械
4、需要高温消毒容器和组件
5、医学实验设备:
6、·光学清晰度,低双折射,潮湿敏感度低
·7、电子:低介电常数,热塑性
·8、食品包装:不含双酚A,邻苯二甲酸盐或卤素
coc塑料特性:低介电常数(绝缘性)。玻璃转移温度属于可调整性(可由环烯怪单体的共聚含量多少决定)。透光型大于92%。耐热性具有较佳的耐热温度和抗氧化特性,热裂解温度高于400度。
COC有着和PMMA匹敌的光学性比PMMA和PC尺寸更稳定,耐热性比PC还高。COC是新型的具有环状烯怪结构的非晶性透明共聚分子材料,其具有作为光学部件非常重要的低双折射率以及低吸水性高刚性等优良性能.具有与PMMA相匹敌的光学性能以及具有高于PC的耐热性,还具有比PMMA和PC更加优良的尺寸稳定性等。
环烯烃共聚物(COC)的是一种非晶态的高分子聚合物,只有几个别制造商生产。COC是一个相对较新级别的聚合物,与聚丙烯和聚乙烯相比。这种材料主要用于要求玻璃般清晰产品,包括镜头,小瓶,显示器和医疗设备。
COC has a transparency similar to glass in its natural form. Typical COC material will have a higher modulus than HDPE and PP. Due to its chemistry, the higher the modulus, the more brittle it becomes. COC also has a high moisture barrier for a clear polymer along with a low absorption rate. In medical applications, COC is noted to be a high purity product with low extractables. COC is also a halogen-free product.
环烯烃共聚物的自然形态,类似玻璃。典型环烯烃共聚物材料,比高密度聚乙烯和聚丙烯模量较高。由于其化学,模量越高,就越变得脆。环烯烃共聚物也是一个防潮湿的,低吸水率的高透明聚合物。在医疗应用领域,环烯烃共聚物是一个低萃取物纯度高的产品。环烯烃共聚物也是一个无卤素产品。
Some properties will vary due to monomer content. These include glass transition temperature, viscosity, and stiffness. The glass transition temperature of these polymers can exceed 150 °C
Extrusion
COC can be extruded with both cast and blown film equipment. These films are then used in consumer applications including food and pharmaceutical packaging. Commercial structures of COC used in blister packs are typically coextruded with a thick COC core and thin polypropylene skin layers. PVC and PvDC can also be placed on the skins via lamination. Profile extrusion is another method that can be used to make COC reinforced tubes or pipes.
Molding
While there are many different types of molding, COC is primarily used in injection molding. Its natural clarity makes it useful in lenses for cameras, projectors and copiers. COC has little to no extractables which make it useful in diagnostic and medical devices. Most COC grades can also undergo sterilization by gamma radiation, steam and ethylene oxide.
Fiber Spinning
COC has unique electrical properties that resist dielectric breakdown and have a very low dielectric loss over time. Because of this COC is used in filter media that require a charge retention to work properly
兄弟 ,下面的你自己翻译吧,
cop塑料中的COC分子侧链有极性基团,与无机、有机材料粘接性好,保证了弹性度好。
COP是一种塑料原料,由日本瑞翁公司开发生产,用于医学用光学部件和高端药品包装材料,其原料特点:高透明、低双折射率、低吸水、高刚性、高耐热、水蒸汽气密性好、符合FDA标准。