The breakthrough in green preparation technology of silicone resin has initiated a new paradigm of circular economy

1.New catalytic systems have emerged, performance indicators have soared, environmental protection applications have expanded, and the industrial chain has been upgraded in a coordinated manner
The emergence of a new catalytic system: Technological innovation of the Piers-Rubinsztajn reactionRecently, a major breakthrough has been made in the preparation process of silicone resin based on the Piers-Rubinsztajn reaction. This technology achieves the integration of hydrolysis and polycondensation reactions at room temperature by optimizing the ratio of alkoxy silane monomers to aromatic ether-containing structural silanes (molar ratio 0.5-5:1), combined with Lewis acid catalysts (such as aluminum chloride or boron trifluoride). The reaction does not require inert gas protection, shortening the production cycle by 40% and reducing energy consumption by 30%. Moreover, by adjusting the pH value (0-7) and temperature (0-30℃), the crosslinking density of the resin can be precisely controlled, providing an efficient path for large-scale production.

2. Performance index leap: Dual breakthroughs in high-temperature resistance and dielectric performance
The newly prepared silicone resin demonstrates outstanding comprehensive performance: the thermal stability is enhanced to above 350℃, and the 5% weight loss temperature reaches 443℃, meeting the strict requirements of the aerospace field. With a dielectric constant as low as 2.9 and a dielectric loss tangent value less than 0.001, it becomes an ideal material for the packaging of millimeter-wave devices in 5G communication base stations. Its mechanical properties have also been significantly enhanced. After undergoing cold and hot shock tests (five cycles from -40℃ to 150℃), the bonding strength retention rate with monocrystalline silicon substrates exceeds 90%, completely solving the pain point of easy re-adhesion of traditional silicone resins.

3. Expansion of environmental protection applications: From industrial emission reduction to penetration into daily life scenarios
The green attribute of this technology promotes the extension of silicone resin into the sustainable field. In wastewater treatment, mesoporous silicone resin materials can efficiently adsorb heavy metal ions and organic pollutants. Their specific surface area reaches 500m²/g, and the adsorption efficiency is twice that of traditional activated carbon. In the field of food packaging, water-based silicone resin coatings, with their zero VOC emissions and degradability, have replaced traditional plastic films. They not only extend the shelf life of food but also decompose into silicon dioxide, water and oxygen through incineration, achieving low-carbonization throughout the entire life cycle.

4. Industrial chain synergy upgrade: From individual synthesis to terminal application integration
With the deepening of the silicon materials industrial cluster in the Yangtze River Delta region, new silicone resin technologies are accelerating the interaction between upstream and downstream. The upstream metal silicon purification technology (ongoing projects in Yunnan and Xinjiang) has raised the raw material self-sufficiency rate to 92%. The midstream continuous production facilities (with a single-line capacity exceeding 50,000 tons per year) have reduced production costs. The downstream application end focuses on emerging scenarios such as photovoltaic inverter packaging and hydrogen energy storage and transportation. It is expected that by 2030, the proportion of special silicone resins will reach over 35%.