| 词条 | Polyethylene naphthalate |
| 释义 |
| ImageFile = Polyethylennaphthalat.svg | ImageSize = 200px | ImageAlt = | IUPACName = | OtherNames =Poly(ethylene 2,6-naphthalate) PEN | Section1 = {{Chembox Identifiers | CASNo = 25853-85-4 | PubChem = | SMILES = | ChemSpiderID = none | Section2 = {{Chembox Properties | Formula = (C14H10O4)n | MolarMass = | Appearance = | Density = | MeltingPt = | BoilingPt = | Solubility = | Section3 = {{Chembox Hazards | MainHazards = | FlashPt = | AutoignitionPt = }} Polyethylene naphthalate (poly(ethylene 2,6-naphthalate or PEN) is a polyester derived from naphthalene-2,6-dicarboxylic acid and ethylene glycol. As such it is related to poly(ethylene terephthalate), but with superior barrier properties. ProductionTwo major manufacturing routes exist for PEN, i.e. an ester or an acid process, named according to whether the starting monomer is a diester or a diacid derivative, respectively. In both cases for PEN, the glycol monomer is ethylene glycol. Solid-state polymerization (SSP) of the melt-produced resin pellets is the preferred process to increase the average molecular weight of PEN.[1] ApplicationsBecause it provides a very good oxygen barrier, it is well-suited for bottling beverages that are susceptible to oxidation, such as beer. It is also used in making high performance sailcloth. Significant commercial markets have been developed for its application in textile and industrial fibers, films, and foamed articles, containers for carbonated beverages, water and other liquids, and thermoformed applications. It is also an emerging material for modern electronic devices.
It also has been found to show excellent scintillation properties and is expected to replace classic plastic scintillators.[2] Benefits when compared to polyethylene terephthalateThe two condensed aromatic rings of PEN confer on it improvements in strength and modulus, chemical and hydrolytic resistance, gaseous barrier, thermal and thermo-oxidative resistance and ultraviolet (UV) light barrier resistance compared to polyethylene terephthalate (PET). PEN is intended as a PET replacement, especially when used as a substrate[3] for flexible integrated circuits. References1. ^{{cite journal|doi=10.1016/S0926-860X(01)00809-2|title=Production of Dimethyl-2,6-Naphthalenedicarboxylate: Precursor to Polyethylene Naphthalate|author=Lillwitz, L. D.|journal=Applied Catalysis, A: General |year=2001|volume=221|issue=1–2|pages=337–358}} {{DEFAULTSORT:Polyethylene Naphthalate}}ポリエステル#ポリエチレンナフタレート2. ^Nakamura et al., Evidence of deep-blue photon emission at high efficiency by common plastic; Europhysics Letters 3. ^Plastic Processor IEEE 2 : Polyesters|Plastics |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。