派瑞林涂层用于橡胶产品的讨论

Para-Coat Technologies  Parylene保形镀层服务项目给予解决方法，并为弹性体材料零件给予维护，包含电子器件，诊疗，航天航空，车辆和国防运用。聚对二甲苯镀层可维护各种各样塑胶和弹性体材料部件，包含密封圈和液压密封件，电脑键盘和医用导管。医疗级有机硅树脂或塑料产品获益于Parylene镀层给予的相溶性，无毒性和有机化学可塑性维护天然屏障。

Parylene镀层根据气相色谱堆积加工工艺在真空系统中增加，而且在涂敷全过程中，聚对二甲苯单个可以渗入塑胶和塑胶的表层，进而给予出色的黏附性。Parylene薄而全透明的柔韧性特点根据维护表层和改进表层特点，提升了塑胶和弹性体材料部件的特性。在没有减少构件作用特性的情形下开展这种改善。Parylene造成真真正正的保形镀层构件，在平缓的表层地区和孔的內部规格周边具备一致的薄厚。无针眼聚对二甲苯镀层可以避免成分迁移到镀层板材中或从镀层板材中迁移出去，即使在一个或2个μm层中也是这般。Parylene保形建筑涂料密封性微孔隙度并封装形式最繁杂的印刷品，

Parylene的湿膜润湿性
原有的出色干润化特点，其指数摩擦阻力贴近PTFE的运用范畴，促使聚对二甲苯做为湿膜润滑液，尤其是做为手术室器械镀层的珍贵财产。聚对二甲苯的隔绝特性和有机化学可塑性尤其适用生物医学工程物件或具备橡胶密封，柱塞泵或膈膜的一次性医疗设备。这类底物很有可能与人体细胞临时或长期触碰，不然会遭到危害。

Parylene的天然屏障和延展性
Parylene镀层也用以硅胶电脑键盘，避免包装印刷图案设计，抵御表层损坏，处理黏性问题，与此同时维护电脑键盘免遭污渍，尘土和油渍。所增加的膜具备高体积电阻率，而且不危害下边的塑胶成分的绝缘特性。Parylene给予无针眼，避免湿冷，腐蚀血液，普遍汽体，细菌和溫度。提升镀层薄厚可进一步提高有机化学耐受力和耐水洗性，而并不会提升体重或本质上危害基材的延展性。

Parylene建筑涂料的优势包含：

·         相溶性和生物体可靠性

·         纤薄轻便

·         微封装作用

·         出色的湿膜润湿性

·         非凡的有机化学，体内湿气和电气设备天然屏障

运用实例包含：

·         医用导管

·         密封圈和密封环

·         硅橡胶管

·         电脑键盘

·         O型圈

·         注射针部件 – 活塞杆，瓶塞和瓶塞

Para-Coat Technologies Parylene conformal coatingservices offer solutions and provide protection to elastomer parts inelectronic, medical, aerospace, automotive and military applications. Parylenecoatings protect a variety of rubber and elastomeric components ranging fromgaskets and seals, to keypads and medical catheters. Medical grade silicone orrubber products benefit from the biocompatible, non-toxic and chemically inertprotective barrier that Parylene coatings provide.

The Parylene coating is applied through a vapordeposition process in a vacuum chamber and during the coating process theParylene monomer is able to penetrate the surface of rubbers and plasticsproviding exceptional adhesion. Parylene’s thin, transparent and flexiblecharacteristics enhance the performance of rubber and elastomer components byprotecting surfaces and modifying surface properties. These improvements aremade without degrading the functional performance of the part. Parylene yieldsa truly conformal coated part with a consistent thickness on the flat surfacearea and around the internal dimensions of holes. Pinhole-free parylene coatingcan prevent the transfer of substances into or out of a coated substrate, evenin one or two micron layers. Parylene conformal coatings seal micro porosityand encapsulate the most complex typographies, providing protection againstpotential leachable ingredients in the elastomer product.

Parylene’s Dry-Film Lubricity
The inherent and excellent dry lubricity characteristics with a coefficient offriction measurements approaching that of PTFE to a range of applications makeParylene a valuable asset as a dry-film lubricant, particularly as a coatingfor surgical instruments. The barrier performance and chemical inertness ofparylene are particularly useful for biomedical objects or single-use medicalinstrumentation items with rubber seals, plungers or diaphragms. Suchsubstrates may come in temporary or prolonged contact with human tissues, andcould otherwise be compromised.

Parylene’s Barrier and Elasticity
Parylene coating is also used for silicone rubber keypads, preventing printedlegends, resisting surface wear, and resolving tackiness issues whileprotecting the keyboard against dirt, dust and oils. The applied film has highdielectric strength, and does not compromise the electrical insulatingproperties of underlying rubber components. Parylene provides a pinhole-freebarrier to protect against moisture, corrosive body fluids, common gasses,fungus and temperature. Increased coating thicknesses further improve chemicaland solvent resistance without adding weight or materially affecting thesubstrate’s elasticity.

Benefits of Parylene Coatings include:

·        Biocompatible and biostable

·        Ultra-thin and lightweight

·        Micro-encapsulation capabilities

·        Excellent dry-film lubricity

·        Superior chemical, moisture and electrical barrier

Examples of applications include:

·        Medical catheters

·        Gaskets and seals

·        Silicon and rubber tubing

·        Keypads

·        O-rings

·        Syringe components – plungers, plugs, and stoppers

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