1. Industry Foreword: The dispersion problem of nanocellulose restricts the large-scale industrialization of the industry. Nanocellulose (CNF), as a green biomass nanomaterial that is currently the focus of development in the global new material field, relies on its ultra-high specific surface area, ultra-high aspect ratio, excellent mechanical strength, good biocompatibility, and complete biodegradability. It is widely used in high-end fields such as water-based coatings, fine chemicals, daily chemical gels, biomedicine, environmentally friendly packaging, and composite material reinforcement. As domestic green substitution and plastic reduction policies continue to advance, nanocellulose has gradually become a core new material that can replace traditional chemical thickeners, synthetic rheology additives, and plastic reinforced substrates. However, in the long-term industrial application process, traditional nanocellulose has common technical problems such as poor redispersibility, easy agglomeration, hard agglomeration, and difficulty in activation, which have become the biggest bottleneck restricting the implementation of the industry. During the dehydration, drying, and molding processes of conventional dry nanocellulose, a large number of hydroxyl groups appear on the surface of the fiber.

As the domestic dual-carbon strategy continues to advance and environmental protection control standards continue to upgrade, the coatings, fine chemicals, and polymer composite materials industries are ushering in a structural transformation from the 'traditional chemical system' to the 'green low-carbon system.' The shortcomings of traditional materials in terms of performance stability, weather resistance, and environmental protection indicators have gradually become apparent. The industry generally needs new base materials that are lighter, more stable, lower energy consumption, and recyclable as technological breakthroughs. In this context, nanocellulose based on natural biomass is becoming a key new material to help industrial upgrading. As a naturally derived nanofunctional material, nanocellulose combines environmental protection attributes with the excellent performance of nanomaterials, and can effectively make up for the performance deficiencies of traditional formula systems without increasing the burden on environmental protection. Nanjing Tianlu Nanotechnology Co., Ltd. has long been focusing on the process optimization and scenario application research of nanocellulose, and continues to promote the implementation of material technology, providing services for coatings, chemicals, composite materials and other industries.

1. Industry Overview: Market Demand and Technical Pain Points of New Hydrophobic Materials With the in-depth implementation of the domestic dual-carbon strategy and the accelerated iterative upgrading of the new material industry, mainstream fields such as packaging manufacturing, industrial coatings, biomedicine, and high-end daily chemicals have increasingly stringent requirements for functional barrier substrates, which have already broken through the traditional basic waterproof and moisture-proof requirements. High-performance hydrophobic barrier, long-lasting and stable weather resistance, green degradability, safety and no residue have become the core standards for industry selection of materials. There are many technical shortcomings in traditional waterproof materials on the market that are difficult to avoid: PE plastic coating cannot be naturally degraded and can easily cause white pollution; chemical waterproof coatings are prone to produce harmful substance residues, have poor aging resistance, and have fast barrier effect decay; ordinary paper and fiber substrates are highly hydrophilic, have high water vapor permeability, and have short moisture-proof protection periods. They cannot meet the stringent usage standards of high-end industry, food and medical fields, and are difficult to adapt to the development trend of green and low-carbon transformation in the entire industry. The market is in urgent need of a product that takes into account high