barium sulfate manufacturer

Optical brightener OB-1 (C.I. Disperse Yellow 9) is an azo dye commonly used in plastics, fibers, and coatings to enhance the whiteness and brightness of products. It works by absorbing UV light and emitting blue light, improving the visual appearance of the material. However, some applications may require avoiding the use of optical brighteners or seeking non-fluorescent alternatives.

In such cases, zinc sulfide (ZnS) can be used as a non-fluorescent white filler. Zinc sulfide itself does not possess fluorescent properties, but it can scatter light, thereby enhancing the whiteness and brightness of the material to a certain extent. The addition of zinc sulfide can reduce the need for optical brighteners or even completely replace them, to meet specific application requirements.

If you want to combine zinc sulfide with the optical brightener OB-1, you may need to consider the following:

1. Ratio: Determine the optimal ratio of zinc sulfide and optical brightener OB-1 to achieve the desired whitening effect. This may require experimental testing to find the right balance.

2. Dispersion: Ensure that both zinc sulfide and optical brightener OB-1 are well-dispersed in the base material to maximize their effectiveness. This may involve the use of appropriate dispersants and mixing techniques.

3. Application Method: Consider how zinc sulfide and optical brightener OB-1 are incorporated into the material, whether they are directly mixed into the plastic formulation or added separately to different components.

4. Performance Evaluation: Assess the impact of the combination of zinc sulfide and optical brightener OB-1 on the final product's performance, including whiteness, brightness, durability, and other relevant properties.

5. Regulatory Compliance: Ensure that your formulation complies with relevant regulations and standards, especially if the product is intended for food packaging or other sensitive applications.

It is important to note that optical brightener OB-1 may exhibit fluorescence under specific UV wavelengths, while zinc sulfide scatters light. The combination of these two may result in a mixed effect of both scattering and fluorescence, which may not be the desired outcome for all applications. Thorough experimentation and performance testing are crucial when developing new products.

If you are interested in the zinc sulfide products from Yunfu Hongzhi New Materials Co., Ltd.(also known as Ambition Chem), please feel free to contact us!