Selecting an ideal lens bonding temporary uv curing epoxy optical adhesive and sealant for optics and optical assembly

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Optics engineers usually need uv curing optical adhesives to help bond different components during optical assembly. They can also be used during fiber optical assembly, optical element fixturing and positioning, and prisms and lens bonding. Each adhesive available in the market has its limitations and its strengths. This is what makes it a great challenge to determine the material that is most suitable for the job at hand. You need to consider carefully and weigh all your material properties based on the application requirements. This has to be balanced against the demands of the process.

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The refractive index and optical transmission are some of the most basic considerations of whether the adhesive is the right choice. Choosing a temporary uv curing optical adhesive must be done carefully and consider some things.

Properties

When adhesives start curing, it is common for them to shrink. This can lead to stress and may cause alignment or focusing issues. Because of this reason, you should pick a temporary uv curing optical adhesive with low shrinkage. Some UV curing adhesives are special and can shrink 0.2 to 0.4 percent while maintaining their optical clarity. For the performance and integrity of the structure, the modulus and hardness of cured material are important. In the case of fiber optic adhesives, it may be necessary to have a hard cure to ensure that the fiber does not move and to allow polishing.

Outgassing

This should also be a consideration to make. This is the release of some volatile materials post and during cure. When you are selecting an adhesive, this should be one of the things that you look into. This is one of the things that can help you determine whether there will be quality issues or not.

Curing method

The curing method of the temporary uv curing optical adhesive needs to be considered. The type you pick will determine how effective it will be for the project you handle. It will affect the complexity and speed of the project. Some adhesives cure within a few seconds and could be beneficial if you need them in production. Rapid curing is important during focusing and alignment, where the adhesive is cured quickly after the process is complete. This can help create some complex fixtures and jigs for assembly.

UV cured adhesives are fast compared to the two-part optical epoxies. The curing process may be accelerated using heat in some cases. However, this thermal excursion may cause stress during and after the cure. Epoxies offer good temperature and chemical resistance as well as hardness. They can resist autoclaving cycles.

Viscosity

An adhesives viscosity is another thing you need to consider when picking a temporary uv curing optical adhesive. This usually depends on the purpose of the adhesive. Is it intended for filing a gap, bridging it, or wicking into one? The mixing process is of great concern when a system has been specified. To get a homogeneous mix, special equipment may be needed. If the mixing processes release toxic fumes, then degassing will be required.

UV curable adhesives are so popular for optics because they are quite easy to use, and the cure time is quite rapid. If you need a temporary uv curing optical adhesive, the above are some of the most important things you should consider.

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For more about selecting an ideal lens bonding temporary uv curing epoxy optical adhesive and sealant for optics and optical assembly,you can pay a visit to DeepMaterial at https://www.deepmaterialcn.com/High-Refractive-Index-Optical-Adhesive-ic287009.html for more info.