Supporting cutting edge research and development with advanced materials to your needs.
High performance materials for extreme conditions.
Innovative and lightweight materials with high mechanical properties and durability.
Materials used in chemical engineering from consumables to innovative solutions.
Advanced materials characterized by high electrical or insulation performance.
High quality materials for renewable energy.
Biocompatible and biodegradable materials to the highest standards.
High purity, biocompatible materials for high performance devices and applications.
High purity materials and crucibles suitable to your needs.
State of the art materials for the next generation of technologies.
High performance materials for extreme conditions.
Durable materials for corrosive environments.
Foils, disks or windows across a range of materials to facilitate innovation.
Polymers, metal foils, and sustainable materials for your packaging needs.
Our 170,000+ range of products can cater to all your research needs.
A variety of specialist materials to support space technology needs.
Highest quality materials including graphite and lithium compounds.
High purity materials to benefit your evaporation processes.
Thin, alkali-free, borosilicate glass for LCD displays to electronic packaging applications.
Ground-breaking graphene-based nanocomposites for regenerative medicine to R&D.
An industry-leading polyimide foil by DuPont™.
A high-performance para-aramid fiber revolutionizing materials science.
A machinable glass ceramic material offering higher performance, reliability, and durability.
This versatile polyester thin film by DuPont™.
It has excellent heat and flame-resistant properties from DuPont™.
A ceramic that addresses the traditional issues of brittleness, fragility, and hardness.
This range of high purity alumina (HPA) powders has exceptional purity levels, making it one of the purest forms of alumina commercially available.
This high temperature insulation material has exceptional properties and versatile applications.
This transparent, heat resistant polyolefin resin has unique properties for a range of applications.
Toggle Nav
Grade: IR Transmitting
Formula: PMMA, Acrylic
Form: Disk
Material: PMMA
CAS Number: 9011-14-7
Commodity: Polymers
Production Method:
Cast
Color:
Dark Red / Black
IR Transmitting PMMA disks from Goodfellow are plastic disks made of polymethylmethacrylate (PMMA) that allow infrared light to pass through them. With 13 size variations available, they can be used in a range of infrared spectroscopy, sensing and imaging applications across scientific research and industry. The PMMA material enables high IR transmittance while providing a durable and lightweight plastic Disk substrate for holding samples or mounting optics. The variety of Disk sizes and thicknesses offered by Goodfellow provides flexibility to select the right IR transmitting Disk for you application needs.
Tolerances
Disk
| Thickness | ±20% |
|---|
Material Properties for Polymers
Physical Properties
| Element | Value |
|---|---|
| Abbe number | 57.2 |
| Flammability | HB |
| Radiation resistance | Fair |
| Refractive index | 1.49 |
| Resistance to Ultra-violet | Good |
| Limiting oxygen index( % ) | 17-20 |
| Water absorption - over 24 hours( % ) | 0.2 |
| Density( gcm⁻³ ) | 1.19 |
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good-Poor |
| Acids - dilute | Good-Poor |
| Alcohols | Good-Poor |
| Alkalis | Good |
| Aromatic hydrocarbons | Poor |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Poor |
| Halogens | Poor |
| Ketones | Poor |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 2.6 |
| Dissipation factor @ 1MHz | 0.014 |
| Dielectric strength( kV mm⁻¹ ) | 15 |
| Surface resistivity( Ohm/sq ) | 10¹⁴ |
| Volume resistivity( Ohmcm ) | 2-14 x 10¹⁵ |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Rockwell | M92-100 |
| Poisson's ratio | 0.35-0.4 |
| Elongation at break( % ) | 2.5-4 |
| Tensile modulus( GPa ) | 2.4-3.3 |
| Izod impact strength( J m⁻¹ ) | 16-32 |
| Tensile strength( MPa ) | 80 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 105 |
| Heat-deflection temperature - 1.8MPa( C ) | 95 |
| Lower working temperature( C ) | -40 |
| Upper working temperature( C ) | 50-90 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1400-1500 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.17-0.19@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 70-77 |