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PEEK Polymer | Medical Grade

Why PEEK polymer is ideal material for medical device?

三十年前，PEEK（聚醚醚酮）已被证实是生物相容性材料。到20世纪90年代末，医用级PEEK聚合物已成为取代金属植入物组件的领先高性能热塑性候选材料，尤其是在骨科和创伤器械中。未填充的PEEK生物材料可表现出3至4GPa的弹性模量，通过制备不同纤维长度和方向的碳纤维增强（CFR）复合材料，可以定制模量，使其与皮质骨（18GPa）或钛合金（110GPa）紧密匹配。医用PEEK越来越多地被用作医疗产品的生物材料。

此外，对于医疗器械零件，PEEK提供了一个巨大的好处：它节省了重量，允许更多的设计自由度和更大的功能集成，它还具有近似于骨骼的X射线透明度和弹性。

What is PEEK?

聚醚醚酮（PEEK）是聚芳基醚酮（PAEK）基团中最著名和最重要的成员。这种高性能聚合物材料具有耐高温、良好的耐磨性和优异的机械性能。例如，PEEK的玻璃化转变温度约为143°C（289°F），熔化温度约为343°C（662°F）。碳纤维填充PEEK或玻璃纤维PEEK材料的有效工作温度最高可达250°C（482°F）。

PEEK材料是综合性能最好的特种工程塑料。PEEK由于其分子中具有大量的二苯乙烯环结构而显示出优异的整体性能。目前，iPEEK®医用级PEEK材料广泛应用于高端医疗器械。

PEEK Plastic Advantages

● 耐化学性高

● 生物相容性确保人体接受该部分，并且该部分不会随着时间的推移而分解

● 强度和刚度与骨骼的柔韧性相似，比钢或钛更大

● 非常惰性，对体内大多数溶剂、脂质、血液或酶没有反应

● 在高温下稳定

● 可通过电子束、蒸汽、伽马射线等消毒。

● 固有的良好耐磨性

● 使用X射线、CT或MRI观察时自然半透明。

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What Kinds of Medical Grade PEEK Material You Have?

I. Unfilled PEEK

iPEEK® i551G is one of unfilled or natural PEEK.It is a high performance, high temperature, semi crystalline thermoplastic material manufactured by iPEEK®. Outstanding chemical resistance and a high operating temperature (up to 250℃/480F) round out PEEK profile.PEEK plastic has excellent dimensional stability combined with high creep stability, ensuring the suitability of PEEK for the most sophisticated machined parts.

Besides, the unfilled black PEEK or black PEEK is also available.

II. 30% Carbon fiber filled PEEK

iPEEK® i550CA30 is a 30% carbon filled PEEK material that is manufactured by iPEEK®. Its carbon fiber reinforcement supports the material a high level of rigidity. Carbon fiber reinforced PEEK demonstrates very high mechanical strength values.However,30% carbon fiber reinforced

PEEK(iPEEK® i550CA30,1.4±0.02g/cm3)presents lower density than 30% glass fiber filled PEEK(iPEEK® i550GL30,1.5±0.02g/cm3).Besides,carbon fiber composites tend to be less abrasive than glass fibers while simultaneously resulting in improved wear and friction properties. The addition of carbon fibers also ensures a significantly higher level of heat conductivity which is also beneficial for increasing part life in sliding applications. Carbon filled PEEK has also an excellent resistance to hydrolysis in boiling water and super heated steam.

III. CF/PEEK

CF/PEEK is obtained by thick gauge thermoforming of thin layers of previously impregnated fibres to form fully consolidated sheets, whose main difference to custom-made composite plates lies in the standardized orientation of the reinforcing fibres, standardized weight content of the polymer and standardized sheet thicknesses, thus allowing easy design and post-processing using identical or similar tools as commonly used when working with metallic light-weight materials like aluminium, titanium and steel.

IV. Customized PEEK

The customized size or shape or color of PEEK products is made by iPEEK® as your product designing requirement.

China's leading PEEK manufacturer