HC Plastics News: General Plastics has introduced a high-performance closed-cell polyurethane foam to provide a transparent radio protection layer for the radome and antenna.
The foam is suitable for applications where low dielectric constant and low loss are required. Available in 3, 4 and 6 lb./cu. ft. plates or blocks, it offers custom density to meet specific dielectric performance requirements.
In addition, the large foam block allows complex shapes to be processed directly without the need to bond the foam board in advance.
This material is compatible with processing temperatures up to 177 °C. It does not absorb water, so the dielectric properties are not affected by rain, snow or sea water.
Editor in charge: Wang Ning 12
Retarder, a kind of admixture for concrete, is used to reduce the hydration speed and heat of hydration of cement or gypsum and prolong the setting time. In order to meet the needs of our customers, we can provide you with a variety of different types of retarders for your choice.
This product has good adaptability to cement, with the features of low dosage, high water reduction rate (up to 45%), good fluidity retention performance, With the characteristics of no chlorine and low alkali, it can be effectively incorporated into concrete to save costs.
Concrete Admixture,Hydroxyethyl Acrylate,Admixture Calcium Lignosulphonate,Calcium Lignosulfonate Liquid
Shenyang East Chemical Science-Tech Co., Ltd. , https://www.eastchemy.com