China presided over the development of fumed silica ISO international standards successfully released

Not long ago, China presided over the formulation of the international standard ISO18473-3 for nanomaterials: 2018 "fumed silica for silicone rubber" was officially approved and released, 7 months ahead of the planned completion time of the project (October 12, 2018). This not only marks a new major breakthrough in the field of international standardization of nanomaterials in China, but also shows that China's nano fumed silica products with independent intellectual property rights have a position in the international similar products.

According to the introduction of Dr. Wang Yuelin, the person in charge of the international standard project, the first ISO/TC256 contribution award winner, and an expert on organic silicon and nano materials, the standard was officially established in October 2015 and drafted by Guangzhou Jibisheng Technology Industry Co., Ltd., the domestic fumed silica industry, international fumed silica enterprise EvonikIndustriesAG (Germany's Evonik Industrial Group), WackerChemieAG (Germany's Wacker Chemical), TokuyamaChemicals (Japan's Deshan Chemical) and domestic nano enterprises Shandong Guoci Functional Materials Co., Ltd., Anhui Xuancheng Jingrui New Materials Co., Ltd. and downstream application enterprises Hubei Xingfa Chemical Co., Ltd., Chengdu Sibao Technology Co., Ltd., Foshan Hualian Silicone Company, Shenzhen Maigao New Materials Co., Ltd., Guangzhou McNing Company and other units actively participated in and provided product application technical support. This international standard has received careful guidance and great help from CNOOC Changzhou Coatings Research Institute Co., Ltd., a domestic counterpart technical unit, and Dai Shifeng, convener of ISO/TC256/WG7 working group.

Nano new material is a strategic emerging industry that countries all over the world are competing to develop, especially the scientific and technological powers will develop nano new materials as a national strategy. Fumed silica (commonly known as fumed silica) is a white fluffy high-purity nano-inorganic non-metallic oxide. It is a nano-material prepared by the gas phase method on a large scale. It is also a nano-powder material that has been widely used so far, driving the development of hundreds of billions of downstream markets. Fumed silica is widely used in silicone rubber, sealant and adhesive, plastic, unsaturated polyester, coating ink, electronic and electrical, green tire, construction and aerospace and other fields. It plays a role in the reinforcement, high thixotropy, sedimentation resistance, anti-sagging, high and low temperature resistance of traditional materials. Its application in energy-saving materials, ceramics, medicine, daily chemical and other new scientific and technological fields is also increasing rapidly. Germany, the United States, and Japan are the main producers of fumed silica, and have long occupied most of the world market share and have a dominant position in the industry. After more than ten years of practice and exploration, Guangzhou Jibisheng Technology Industrial Co., Ltd. and Yichang Huifu Silicon Material Co., Ltd. have successfully realized the preparation technology of fumed silica with an annual output of 5,000 tons. In particular, the online surface treatment hydrophobic process developed by the company with independent intellectual property rights has realized the breakthrough of nano powder surface modification technology and formed products with international competitiveness. Dr. Wang Yuelin pointed out that actively implementing the international standardization strategy and promoting the "going out" of China's nanomaterials is the only way for China's new material industry to realize from large to strong. In 2005, Guangzhou Jibisheng Company took the lead in formulating the domestic national standard for fumed silica (GB/T20020-2005), and revised the national standard in 2013 according to the new achievements of China's industry, and the standard level was greatly improved. This not only provides standard support for China's fumed silica products to be recognized by domestic and foreign customers and rapidly expand domestic market share, but also lays a solid foundation for China's fumed silica products to go international and actively undertake the formulation of international standards. With the joint efforts of the project leader and the Chinese expert team, many technical indicators in the Chinese national standard have been successfully incorporated into the international standard, especially the Chinese method of product classification by specific surface area has been adopted by the standard, which has contributed to the Chinese plan, demonstrated China's wisdom and won the unanimous recognition of international experts.

ISO18473 international standard is a series of product standards for nanomaterials in different application scenarios, all led by Chinese enterprises, creating a new direction for the formulation of nanomaterial product standards. ISO18473-1:2015 "Nano Calcium Carbonate for Sealants" and ISO18473-2:2015 "Nano Titanium Dioxide for Sunscreen" have been adopted as EU standards by EU CEN in 2016. Dr. Wang Yuelin, a Chinese expert, won the first contribution award from the ISO/TC256 Committee because he led the ISO18473-1 of two international standards: 2015 "Nano Calcium Carbonate for Sealants" and ISO18473-3:2018 "Fumed Silica for Silicone Rubber" and other contributions he made to the Committee. This fully demonstrates the great contribution made by Chinese experts in international standardization, especially the ISO/TC256 committee. Chinese experts did not stop, and put forward two new proposals for international standards related to nanomaterials and three proposals for international standards for pigments, making China a country with many international standards under the auspices of ISO/TC256, contributing to the realization of China's leap from a standard power to a standard power.