OFS has the ability to package your 光纤-based solution with various coating tailored to your critical application requirements. Here are some of the options that can be discussed further with our coatings technologists.
What is an 光纤 Coating/Buffer?
Optical fiber coatings/buffers play an important role in protecting the fiber from its intended environment. The coating protects the glass fiber from mechanical 和 environmental stresses in application. The primary coating may be applied in a single or dual layer. Coatings are applied during the fiber draw process 和 before touching any external surface. 为 额外的保护, a layer of buffer material may be added. The buffer material provides additional mechanical protection for the fiber 和 helps preserve the waveguide.
What is a 光纤电缆 Jacket?
An optical 电缆 structure protects 光纤s from environmental damage. Cable structure includes buffers, strength members, 和 jackets. Many factors influence the design of 光纤电缆. The 电缆 design relates to the intended application of the 电缆.
光纤电缆 Layers
Fiber Optic Coatings:
Acrylate Fiber Coating
Photocurable liquid coating compositions adapted to provide primary coatings for optical glass fibers. St和ard telecoms 光纤s use a dual coating of acrylate (a softer inner coating 和 a harder outer layer). Specialty fibers typically use one coat.
High-Temperature Acrylate
High-temperature acrylate is used because of its resistance to steam 和 电缆 gels or when the fiber will be used in a harsh environment requiring extra protection. 通常用于 工业传感 和 military/aerospace 应用程序.
Fluoroacrylate
Non-toxic 和 rugged, this coating is ideal for medical 应用程序. It adheres to the class surface of the silica “healing” micro-defects thereby improving the tensile strength of the fiber 和 retarding static fatigue. Used in industrial 应用程序 where the hard polymer enables a connector to be crimped directly onto the fiber 和 the fiber cleaved mechanically. More information on OFS HCS Crimp & Cleave technology can be found on this website. This fluoroacrylate may be used as a cladding or a coating material for 光纤.
有机硅涂料
Resistant to water vapor 和 a range of chemicals, 硅胶是柔软的, 和 requires buffering for protection, usually with thermoplastics like ETFE, PFA或PEEK. Silicone dampens attenuation inducing compression 和 is easily strippable.
丙烯酸酯涂料
Typically used to coat 光纤s designed for distributed temperature sensing 应用程序. Depending on the grade of Acrylate, mid-temperature range up to 135 ºC for up to 20 years 和 higher temperatures up to 200 ºC, 可以支持. Optical fibers using this coating combination are protected against moisture across the temperature range. They are resistant to water 和 chemicals 和 are cushioned for deployment 和 service in harsh environments.
聚酰亚胺
聚酰亚胺 coatings from OFS are designed for 光纤 in harsh temperature sensing 和 communications environments. 一个瘦, hard polymer coating provides mechanically strong fiber with excellent chemical resistance, 小横截面, 和 long-term high-temperature exposure. OFS polyimide provides excellent thermal stability 和 some of the highest operating temperatures: continuous lifetime temperatures of 275 °C for up to 80 years, 300 °C for up to 13 years, 325°C，最高可达2.2 years, as well as short-term (24 hours) excursions as high as 450 °C.
碳
这种涂料, applied a few angstroms thick, extends fiber lifetime significantly 和 can be used with other coating materials. Used in 应用程序 where the 光纤 will be exposed to high stress, 和/or installed in a tight coil, 和/or there will be exposure to high humidity. Often the coating of choice when long lifetime of the 光纤 is a requirement.
Polyetheretherketone PEEK
Frequently used as a tertiary layer where other coatings like carbon 和 silicone may comprise other layers. PEEK provides a high Young’s modulus outer layer with excellent chemical 和 abrasion resistance, low thermal expansion, 和 is a zero-halogen material providing low smoke 和 toxicity.
Polybutylene terephthalate PBT
Polybutylene Terephthalate (PBT) delivers excellent short-term mechanical properties, such as high strength, toughness 和 stiffness as well as good practical impact. PBT’s high heat-deflection temperatures 和 high temperature index ratings help components withst和 both short term thermal excursions 和 long-term heat exposure. It has robust chemical resistance to a wide range of chemicals. Optical fibers 和 fiber optic 电缆s jacketed with PBT would be used in aerospace, utilities 和 industrial 应用程序.
聚丙烯PP
Polypropylene may be used as an alternative to 聚氯乙烯 (PVC) as a buffer for 光纤 in LSZH 电缆. It emits less smoke 和 no toxic halogens, which may lead to production of acid in high-temperature conditions.
聚乙烯PE
PE has excellent properties of moisture 和 weather resistance 和 has good electrical properties over a wide temperature range. It’s also abrasion resistant. Typically used as a jacket material for 外面的工厂 fiber optic 电缆s.
LSZH (low-smoke, zero halogen) PE-PP
LSZH jacket is free of halogenated materials which can be transformed into toxic 和 corrosive matter during combustion. LSZH is a good 电缆 jacket choice for enclosed installations.
Polyvinylchloride PVC
PVC is usually low-cost, flexible, fairly rugged. It can be formulated to function in a variety of environments 和 应用程序. It is used as a 电缆 jacket material for both indoor 和 outdoor 电缆s.
Polyvinylidene Fluoride PVDF
A PVDF coating does not react with most solvents 和 chemicals. It offers excellent resistance to abrasions 和 wear, high dielectric strength, is resistant to weathering, 和 can extinguish itself in the case of a fire. They also do not produce much smoke if there is a fire. 这种涂料 is a good choice for indoor plenum 电缆s.
聚氨酯TPU
Properties of TPU include: high abrasion resistance, low-temperature performance, 高抗剪强度, 高弹性, transparency 和 oil 和 grease resistance. Used in industrial grade 电缆s.
Halogen free Flame retardant Polyurethane HFFR
无卤, flame retardant (HFFR) thermoplastic polyurethane (TPU) compositions are replacing halogen-containing, flame retardant TPU compositions in a number of 应用程序 including, 但不限于, the insulation 和 protective jackets for the wire 和 电缆 associated with personal electronic devices 和 电缆s deployed in enclosed spaces. These HFFR TPU compositions can provide excellent flame-retardant performance 和 mechanical properties including excellent flexibility.
Hytrel® 山丘
Thermoplastic polyester elastomers (山丘) provide the flexibility of rubbers 和 the strength of plastics. The material offers excellent flex fatigue 和 broad use temperature. 它能抵抗撕裂, flex-cut增长, 蠕变和磨损, showing outst和ing toughness while resisting hydrocarbons 和 many other fluids. It is used in several of the OFS 电缆s designed for reliable use in aircraft 应用程序.
Ethylene tetrafluoroethylene ETFE
ETFE [poly(ethene-co-tetrafluoroethene) has excellent resistance to extremes of temperature, excellent chemical resistance, good mechanical strength with excellent tensile strength 和 伸长. It has superior physical properties compared to most fluoropolymers. It also exhibits outst和ing resistance to weather 和 aging. ETFE is typically used as a buffer for the OFS HCS® fibers used in industrial datacom 应用程序.
Perfluoroalkoxy Teflon™ PFA
光纤电缆 buffered with Teflon™ fluoropolymers gain exceptional resistance to high temperatures, 化学反应, 腐蚀, 应力开裂. The material is well suited for 电缆s deployed in harsh 应用程序.
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The team at OFS has years of experience developing fiber optic coating solutions. Serving a range of industries, we work closely with all our clients to ensure coatings meet their specific needs, no matter how unusual or complex. To learn more about our 光纤s, check out our comprehensive catalog, or reach out to our team of experts today to discuss your optic fiber 和 fiber optic 电缆 specifications 和 needs.
