Karet Silikon Cair Optik:Perlengkapan Baru dalam Moulding
Kami menawarkan banyak proses manufaktur dan material untuk prototipe dan komponen produksi. Namun satu proses memiliki bahan yang terpisah dari yang lain, karet silikon cair optik (OLSR). OLSR adalah material canggih yang memiliki banyak sifat yang menjadikannya pilihan material yang lebih disukai daripada polikarbonat (PC) dan akrilik (PMMA) untuk penerangan dan komponen optik. Berikut beberapa manfaat yang ditawarkan OLSR:
Transmisi Cahaya
Transmisi cahaya hilang saat cahaya melewati suatu material. PC, PMMA, dan bahkan kaca akan mengalami kehilangan cahaya dengan penahan kaca hingga 95 persen, PMMA sekitar 93 persen, dan PC antara 88 hingga 90 persen. Jika produk Anda memerlukan komponen PC atau PMMA bening, Anda dapat menyempurnakan transmisi cahaya menggunakan OLSR, yang mempertahankan transmisi cahaya hingga 94 persen. Bagaimana dengan indeks bias? OLSR memiliki indeks bias rendah sebesar 1,42 jika dibandingkan dengan PC dan PMMA, yaitu masing-masing sebesar 1,58 dan 1,49.
| | Silikon | PC | PMMA | Kaca |
|---|
| Transmisi Cahaya | 94% | 88-90% | 93% |
95% |
| Indeks Bias | 1,42 | 1,58 | 1,49 |
1.52 |
| Resistensi UV | Tinggi | Rendah | Sedang |
Tinggi |
| Resistensi Bahan Kimia | Tinggi | Sedang | Rendah |
Tinggi |
| Suhu | >150°C | 120°C | 90°C |
>200°C |
| Menguning | Tidak | Ya | Ya |
Tidak |
| Detail Mikro | Ya | Tidak | Tidak |
No |
| Thick Part | Yes>1 in. | No | >PC |
Yes |
| Minimum Part Thickness | <0.020 in. | 0.040 in | 0.040 in |
- |
Still another advantage is the non-yellowing factor. Thermoplastics without additives are not UV resistant, which means the parts could yellow and degrade over long exposures to lights and sunlight. OLSR is non-yellowing so it’s great for outdoor fixtures exposed to harsh environments. Heat and Chemical Resistance Because OLSR is durable under temperatures that may be close to exceeding 300°F (150°C), and able to withstand many chemicals that may break down thermoplastics, you can use OLSR in high-power light fixtures, solar power, outdoor fixtures, LED lighting, cleaning fixtures, and many other environments where PC and PMMA may fail.
Injection Molding Resilience
In plastic design, thick and thin parts are not easily achieved without sacrifice. That doesn’t necessarily ring true with OLSR design. You can achieve thick and thin geometries that oftentimes can be as thin as 0.010 in. (0.25mm) and as thick as 2 in. (50mm), all within the same part geometry because you don’t have issues with material flow, sink, or voids.
OLSR is extremely resilient against the molding issue that frequently create problems with thermoplastics, including the ability to create micro details. You also can design in negative draft angles without the need for expensive tooling that normally requires lifters, collapsible cores, and side-actions.
When to Use
As you learn about the benefits of OLSR, the applications where you can use OLSR are numerous:
- Reducing part count in your design with built-in gaskets
- Lenses of all types
- Lightpipes or guides
- Marine and wet environments
- Outdoor and indoor light fixtures
- Low- and high-heat environments
- High impact parts
To learn more about optical liquid silicone molding and other molding, machining, and 3D printing services at Protolabs, visit protolabs.com . You can also contact us at [email protected] or 877.479.7541 to speak with one of our knowledgeable applications engineers.
