![]() We live up to our commitment to the customers. The improved value chain will enable us to deliver premium services and products to customers in China and Asia,” said Jianhua Wu, chairman of the Wynca Group.įuliang Xia, president of Evonik Greater China, said in his speech at the opening ceremony: “Since the plant broke ground in December 2019, we’ve completed the construction work on schedule with high quality and safety standards. “The partnership allows both sides to realize integration and complementarity in the supply chain of fumed silica and the recycling of materials. We expect win-win results through leveraging the expertise of both parties in silicon materials.” The joint venture will be a strong complement to Evonik’s global presence in fumed silica. ![]() Claudine Mollenkopf, head of Evonik Silica business line said: “I am excited to witness the cooperation between Evonik and the Chinese partner Wynca. With this new joint venture, Evonik is well positioned to build a complete global supply chain of fumed silica for customers in China and Asia.ĭr. This production loop is expected to contribute to synergies among silicone monomer, chlorosilane and fumed silica production, and ultimately to a circular economy. Meanwhile, the by-product hydrochloric acid will also be fully utilized as a raw material for Wynca Zhenjiang Site. The joint venture will combine Evonik's product technology with Wynca’s silicone industry chain, producing high-value fumed silica products through the comprehensive use of monomer by-products, methyltrichlorosilane and chlorosilane from Wynca. Evonik is a leading global supplier of silica with its products widely used in many high-growth markets. The demands for fumed silica in the Chinese market is growing steadily. With features such as thickening, thixotropy, anti-precipitation, and matting, it has been widely applied in industrial applications such as silicones, coatings, adhesives, and sealants. More than 150 participants, including employees from Evonik and Wynca, partners, government and media representatives, attended the opening ceremony.įumed silica is an important functional material. ![]() It will produce fumed silica marketed under the brand name AEROSIL®. Located in the Zhenjiang New Material Industry Park in Jiangsu province, the plant is Evonik's first fumed silica production site in China. is starting-up of its new fumed silica plant. The joint venture between Evonik and the Chinese company Wynca - Evonik Wynca (Zhenjiang) Silicon Material Co., Ltd. Recent investigations in the field of surface characterization and interactions are reported.Zhenjiang, China. The aim of this paper is to combine results from surface chemistry and particle characterization in order to understand the basic mechanisms of fumed silica applications. These characteristics enable fumed silica to act as a free flow additive in powder-like solids, as a thickener in various liquids and as a powerful reinforcing filler in elastomers. Additionally, fumed silica shows a space-filling particle structure related to a high surface area and lacking micropores. It consists of finely dispersed amorphous silicon dioxide and its surface is covered by highly reactive silanol groups which are available for chemical reactions. Due to its pyrogenic manufacturing process by combustion of silicon tetrachloride in an oxygen-hydrogen flame, fumed silica offers a variety of fascinating properties. Since its first production in the early forties of this century, fumed silica has found widespread use in industrial applications.
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