Fumed silica is a white fluffy powder, that is a great reinforcement and rheology control agent for RTV silicon rubber. It almost keeps the original transparency of rubber products.
Add HIFULL HB-132 hydrophobic fumed silica into RTV rubber by 5%, 10%, and 15% respectively. Disperse them for 30 minutes with a planetary mixer and prepare them into three RTV rubber samples. Test their light transmittance value by transmittance tester:
- The 5% sample is 83.1
- The 10% sample is 83.2
- The 15% sample is 83.3
The results are very close
It shows that a higher dosage amount of HIFULL HB-132 fumed silica won’t significantly affect the transparency of RTV rubbers.
Further Reading: Fumed Silica(additive) In silicone-rubber
Hubei Huifu Nanomaterial Co., Ltd manufactures 7 grades of hydrophilic fumed silica and 10 grades of hydrophobic fumed silica for your choice. We are strong in R&D product quality and factory capacity. Feel free to contact us by email: firstname.lastname@example.org
Our main products are fumed silica SiO2, fumed titanium dioxide TiO2, and fumed alumina Al2O3. We get 20+ years of expertise and 20,000 tons of annual capacity. We supply total of 23 grades of hydrophilic & hydrophobic fumed silica. We get registration of REACH and pre-registration of K-REACH & KKDIK. We are the leading setting body of ISO18473-1:2015, ISO18473-3:2018, and ISO 23157:2021. Learn More About Hifull
Frequently Asked Question
Still have questions?
If you cannot find an answer to your question in our FAQ, you can always contact us and we will be with you shortly.