Abstract:

Aerogel is a multifunctional new material. The silica-based aerogel as the most widely studied aerogel material, first industrialized in China in 2004, has been widely used in electronics, construction, thermal insulation, aerospace, energy and other fields. However, compared with foreign countries, there are fewer high-end products in China and the original innovation is slightly insufficient. In this paper, the patents related to silica-based aerogel materials and its preparation technology in the past 20 years were studied and the research hotspots in the past 20 years from the perspective of patents were explored. This paper analyzed the current market competition pattern from the dimensions of market flow and key applicants, and pointed out that the developed countries represented by the United States, Germany and Japan were in the leading position through the global patent layout to achieve a greater control of the market to a certain extent. It focused on analyzing the research hotspots of silica-based aerogel and its preparation technology from the perspectives of technical hotspots and technical routes. At present, aerogel particles, precursor improvement and fiber reinforcement were the research focuses in this field in recent years, and all countries had paid more attention to metal oxide composites and transparent energy storage materials. Then, by sorting out the technical characteristics of Chinese transferred and transformed patents, it helped enterprises to accurately find cooperation partners when seeking technical cooperation. Finally, the research directions that Chinese enterprises needed to focus on in technological innovation were summarized to provide guidelines for future technological research and development.

Key words: silica-based, aerogel, metal oxide composites, patent analysis

摘要：

气凝胶为多功能新型材料，其中二氧化硅基气凝胶是研究最广泛的气凝胶材料，2004年首次在中国产业化，至今被广泛应用于电子、建筑、隔热、航空航天、能源等领域中。但与国外相比，中国高端产品较少，原始创新略显不足。因此，本文梳理了近20年全球二氧化硅基气凝胶材料及其制备技术的相关专利，从专利的视角挖掘近20年的研究热点。从市场流向和重点申请人的维度分析当前的市场竞争格局，指出以美、德、日为代表的发达国家，通过全球专利布局在一定程度上实现了对市场较大力度的控制，处于领先地位。重点从技术热点及技术路线的角度分析二氧化硅基气凝胶及其制备技术的研究热点：目前，气凝胶颗粒、前体的改进和纤维增强是近年来该领域的研究重点，各国对金属氧化物复合材料和透明储能材料的关注度较高。并且通过梳理中国的转移转化专利的技术特点，帮助企业在寻求技术合作时精准找到合作对象。最后总结了技术创新中中国企业需重点关注的研究方向，为未来的技术研发提供指引。

关键词: 二氧化硅基, 气凝胶, 金属氧化物复合材料, 专利分析