The future focus of domestic silicon dioxide research will revolve around high-end applications, green manufacturing, and interdisciplinary integration.
1、 Research institution hierarchy and technical direction
1. National level scientific research platform
① Shanghai Silicate Research Institute of the Chinese Academy of Sciences: It has maintained an international leading position in the field of mesoporous material synthesis and bioceramics, and has won 55 the State Natural Science Award/Technological Invention Awards in total, holding 3287 invention patents. Its pioneering natural sponge skeleton derived porous ceramic technology has a porosity control accuracy of ± 0.5 μ m.
② China Academy of Building Materials Science: Leading the development of industrial technology, the innovative low-carbon purification process of quartz sand has reduced the energy consumption of precipitation method production to 1.8 tons of standard coal per ton (32% lower than traditional processes).
2. Industry university research cooperation community
① Henan University Haiborui Joint Laboratory: Built Asia's first 40000 tons/year electronic grade spherical silica production line, with product particle size distribution CV value ≤ 3% (international standard ≤ 5%), completely solving the bottleneck problem of 5G chip packaging materials.
② Aerospace Material Center of Chongqing University: The silica aerogel carbon fiber composite developed has been applied to the Long March series rockets, with the measured thermal conductivity of 0.018W/(m · K) (at 1200 ℃).
3. Specialized and innovative enterprise
① Guangzhou Huifu Research Institute: Breaking through the key technology of semiconductor grade CMP polishing solution, achieving a surface roughness Ra ≤ 0.5nm (equivalent to 1/1600 hair diameter) on silicon wafers.
② Nanchang to New Chemical: Innovative quartz sand acid leaching distillation purification process, with electronic grade silica purity reaching 99.9995% (42% lower cost than imported products).
4. Segmented fields of specialized technology enterprises:
① Quecheng Corporation: The global market share of highly dispersed silica for tires is 12%;
② Hongbai New Materials: Build a 50000 ton/year photovoltaic grade high-purity quartz sand production line;
③ Lianrui New Materials: Fill the domestic gap with spherical silica for high-frequency copper-clad laminates;
2、 Roadmap for Key Technology Research and Development
1. Localization of semiconductor materials
Key breakthroughs in defect control technology for 12 inch silicon wafers, meeting the requirement of 3nm process chips for local flatness of silicon wafers ≤ 0.3nm/10mm, and accelerating the penetration rate increase of domestic CVD equipment (target of 50% by 2025).
2. Green manufacturing upgrade
Developing a new process for plasma melting of quartz sand:
① Unit energy consumption ≤ 1.5 tons of standard coal per ton;
② The recovery rate of by-product magnesium silicate is ≥ 95%;
③ Zero discharge of wastewater;
3. Breakthrough in Biomedical Materials
The three major technical thresholds for mesoporous drug delivery systems are:
① The drug loading efficiency has been increased to 35% (currently 20%);
② MRI navigation targeting error<2mm;
③ Slow release cycle 72 ± 6 hours (current deviation ± 12 hours);
4. Aerospace Materials Iteration
Performance index of new generation aerogel:
parameter
current situation
2025 Goal
bulk density
0.1g/cm³
≤0.06g/cm³
compressive strength
1.2MPa
≥3MPa
thermal stability
1200℃
1500℃
5. Intelligent material development
Photothermal responsive composite materials
① Solar spectral absorption rate>92%;
② Thermal energy conversion efficiency ≥ 15%;
③ The temperature control range for phase transition is 30-80 ℃;
3、 Suggestions for the Construction of Industrial Ecology
1. Innovation Chain Collaboration Mechanism
Build a three-level transformation system of "Basic Research (Chinese Academy of Sciences) - Engineering Development (Building Materials Institute) - Mass Production Optimization (to New Chemical Industry)", with a technology iteration cycle compressed to 15-18 months.
2. Complete standard system
① Control standards for 13 metal impurities in electronic grade silica
② ASTM equivalent test specification for aerogel materials (61% of the current domestic standards are missing)
4、 Talent Strategy Layout
Establish a three-dimensional training system consisting of process experts, material scientists, and equipment engineers, with a focus on addressing:
① Talent in crystal growth technology (shortage of 12000);
② Interdisciplinary R&D talent (shortage of 8000);
③ Standardization engineer (shortage of 3000);