Para-Coat Technologies  Parylene保形涂層服務(wù)提供解決方案，并為彈性體零件提供保護(hù)，包括電子，醫(yī)療，航空航天，汽車和軍事應(yīng)用。聚對(duì)二甲苯涂層可保護(hù)各種橡膠和彈性體組件，包括墊圈和密封件，鍵盤和醫(yī)用導(dǎo)管。醫(yī)用級(jí)硅樹脂或橡膠產(chǎn)品受益于Parylene涂層提供的生物相容性，無毒和化學(xué)惰性保護(hù)屏障。

Parylene涂層通過氣相沉積工藝在真空室中施加，并且在涂覆過程中，聚對(duì)二甲苯單體能夠滲透橡膠和塑料的表面，從而提供優(yōu)異的粘附性。Parylene薄而透明的柔韌特性通過保護(hù)表面和改善表面特性，提高了橡膠和彈性體組件的性能。在不降低部件功能性能的情況下進(jìn)行這些改進(jìn)。Parylene產(chǎn)生真正的保形涂層部件，在平坦的表面區(qū)域和孔的內(nèi)部尺寸周圍具有一致的厚度。無針孔聚對(duì)二甲苯涂層可以防止物質(zhì)轉(zhuǎn)移到涂層基材中或從涂層基材中轉(zhuǎn)移出來，即使在一個(gè)或兩個(gè)微米層中也是如此。Parylene保形涂料密封微孔隙并封裝最復(fù)雜的印刷品，

Parylene的干膜潤(rùn)滑性
固有的優(yōu)異干潤(rùn)滑特性，其系數(shù)摩擦系數(shù)接近PTFE的應(yīng)用范圍，使得聚對(duì)二甲苯作為干膜潤(rùn)滑劑，特別是作為手術(shù)器械涂層的寶貴資產(chǎn)。聚對(duì)二甲苯的阻隔性能和化學(xué)惰性特別適用于生物醫(yī)學(xué)物體或具有橡膠密封件，柱塞或隔膜的一次性醫(yī)療儀器。這種底物可能與人體組織暫時(shí)或長(zhǎng)時(shí)間接觸，否則會(huì)受到損害。

Parylene的屏障和彈性
Parylene涂層也用于硅橡膠鍵盤，防止印刷圖案，抵抗表面磨損，解決粘性問題，同時(shí)保護(hù)鍵盤免受污垢，灰塵和油污。所施加的膜具有高介電強(qiáng)度，并且不損害下面的橡膠組分的電絕緣性能。Parylene提供無針孔，防止潮濕，腐蝕性體液，常見氣體，真菌和溫度。增加涂層厚度可進(jìn)一步提高化學(xué)耐受性和耐溶劑性，而不會(huì)增加重量或?qū)嵸|(zhì)上影響基板的彈性。

Parylene涂料的優(yōu)點(diǎn)包括：

·         生物相容性和生物穩(wěn)定性

·         超薄輕巧

·         微封裝功能

·         優(yōu)異的干膜潤(rùn)滑性

·         卓越的化學(xué)，濕氣和電氣屏障

應(yīng)用示例包括：

·         醫(yī)用導(dǎo)管

·         墊圈和密封圈

·         硅橡膠管

·         鍵盤

·         O型圈

·         注射器組件 - 活塞，塞子和塞子

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