Norland OpticalAdhesive 81 ("NOA81") is a single component liquid adhesive thatcures in seconds to a tough, hard polymer when exposed toultraviolet light. It is recommended as an extremely fast andefficient way to precisely bond optical components or fiber optics.It can be cured in a thin layer between two transparent substratesor applied as a drop to form a bridge between two components.Exposure to UV light cures the adhesive and holds thecomponents in place.
The outstanding characteristic of this adhesive isits extremely fast cure. Thin films can be initially set in under10 seconds and thick films in 20 seconds using the light sourceslisted below. It is also extremely stable when not exposed to UVlight. NOA 81 will not gel up in dispenser tips or cure before youwant it to.
NOA 81 is sensitive to the entire range of longwavelength light from 320 to 380 nanometers with peak sensitivityaround 365 nm. Cure time is dependent on light intensity andthickness of the drop applied. To fully cure the material re Joules/sq. cm of energy The adhesive is designed to be cured withsmall hand held or desktop UV light sources that are easy touse.
诺兰德光学粘合剂81(“NOA81”)是一种单组分液体粘合剂，暴露在紫外线下，几秒钟内就能固化成坚硬的聚合物。它被推荐为一种非常快速和有效的方法来jingque粘合光学元件或光纤。它可以在两个透明基材之间的薄层中固化，也可以作为液滴施用以形成两个组件之间的桥接。暴露在紫外线下可以快速固化粘合剂并将组件固定在适当的位置。
这种胶粘剂的突出特点是其固化速度极快。使用下面列出的光源，薄膜可以在10秒内形成，厚膜可以在20秒内形成。当不暴露在紫外线下时，它也非常稳定。noa81不会在你想要它之前凝胶化或固化。
noa81对320至380纳米的整个长波范围都很敏感，峰值灵敏度约为365纳米。固化时间取决于所施加的光强和液滴的厚度。完全固化材料需要2焦耳/平方。该粘合剂设计用于易于使用的小型手持或桌面UV光源固化。
