5236000475
Table 5. Selected plasńc optical materiał chaiacteristics
.ćććććććććććć.--£-—£--
|
Materials |
Type ( |
Chemical Structure |
characteristics |
Issues |
Applications | ||
|
PMMA |
Acrylate Polymers |
CHj 1 --CHj -C- 1 c= O 1 0 1 CMi _ |
n |
. high transparency . low birefringence . outstanding hardness . high light deterioration resi stance . high number |
. higfr water absorption . diangeofrefractive index due to absorption . heat resistance |
. condensers •teMknses . car lamps lenses . light guide plates for LCD backlights | |
|
Alicyclic •/•/•/■/•/■/■Aa/wvw Acrylate ■/■/■/■/■/■A'///////- |
Acrylate Pohmers |
CH, 1 - -OS-C- 1 c-o |
CM, — CM.-C— 1 C-0 0 m|_ cm, |
J n |
. Iow birefringence . Iow water absorption . high heat resi stance |
. Water absorption is reduced being approximately half of that of PMMA |
. cptical lenses . CDpick-up Lenses . LBP lenses |
|
Optical Polycaibonate (PC) |
Poły car-bonate -/•/•/•/•/•/•/'/•AA |
■OO? W CH, W 0 |
- n |
. most commonly used . Iow levels of impurities . transparent . high refractive index . heat resi stance • mslteUM . transferability . tigk intensity. |
. large birefringence - coefficient is approximately 10 times greater than that of PMMA. |
. CD-ROM CD-RRW: MD. DVD-ROM DVD-Video. and D\T)-RRW | |
|
Cycloolefin ■/■/■A//////////////-, Polymer (COP) |
Poły car-bonate ■AAAAAAAAAA |
Ri R? |
n |
. Transparent . The Iow es t water absorption . Low scattering . Low birefringence . Heatresistance -High |
. cptical devices sudi as lasers used for the visible region . cptical discs . light guide plates for LCD backlights | ||
|
Cycloolefin A/-AAAA/WVWWVWV Copolvmer (COC) |
Poły car-bonate AAAAAAAAAA |
\ / |
• CM - ov • |
. low specific gravity . transparenty . Iow water absorption . low scattering . low birefringence . heat resistance |
. DVD pick-up lenses . Celi phone camera lenses . Optical lenses | ||
|
Polysulfone AAAAA+AAAAAAAAAAA* (PSU) |
fotoo-K> |
n |
. Heat resistance The heat deflection temperaturę is 3.43F . High refractive index (>1.6). . High intensity |
. food serrice components . plumbing fixtures . membranes . laboratory animal cages | |||
From Hond BookofPlazńc Opńcs
Wyszukiwarka
Podobne podstrony:
Table,5. Selected plastic optical materiał characterisńcs Materials rype [Chemical
2020 IBEF Exchange SeminarMATERIALS SELECTION AND DESIGN> Materials > Emulsified Asphalt Ta
Wybrane zagadnienia z inżynierii materiałowej Selected issues from materials engincering
p 7 TABLE DES MATIERES ET MATERIAUX REUTILISES MOBILE DES ACROBATES: papier journal
f2 11 111/11 Data Browser: Table LFA1 Select Entries 300 labie entry Edit Goto Settings Utilities Er
Dz pobranie Hg,Cd TABLE 14.14 Intake and Absorption of Mercury from Air, Water and Food by Adults L
First research works on LCA at Poznań University of Technology 95 Table 3. Materials used in the ope
Tabela 1. Przykładowy bilans rozchodu materiałów zużytych w dziennej produkcji Table 1. Example of d
2012 r. — Jerzy Jóźwik, Tofil, A.: SELECTED MACHINING PROBLEMS OF MATERIALS USED
Retrieving Information from a Table The select statement is used to puli information from a table. T
Selecting Particular Rows As shown in the preceding section, it is easy to retrieve an entire table.
więcej podobnych podstron