Titanium Dioxide: Traditional & Emerging Uses
Traditional Industries: Indispensable Pillar Applications
As the world's highest-performing white pigment, titanium dioxide holds an absolute core position in four traditional industries, contributing over 90% of consumption.
The coatings industry is its largest battleground, accounting for 60%–65%. Rutile titanium dioxide, with its superior weather resistance, has become the mainstay of the coatings industry.
In architectural coatings, it imparts uniform whiteness and UV resistance to walls, preventing fading and chalking.
In automotive coatings, its high tinting strength ensures long-lasting, vibrant colors while enhancing paint adhesion and mechanical strength.
In industrial anti-corrosion coatings, titanium dioxide with composite coating treatment further improves coating wear resistance and extends the service life of steel structures.
The plastics industry follows closely behind, with 20% of titanium dioxide used to optimize product performance. In outdoor plastic pipes and window/door profiles, titanium dioxide effectively blocks UV rays, preventing material aging and brittleness.
In high-end engineering plastics, chloride-process titanium dioxide improves heat resistance and mechanical strength, meeting the stringent requirements of electronic device casings.
The paper and ink industries also rely on its properties: anatase titanium dioxide for papermaking can replace fluorescent whitening agents, enabling high-grade coated paper to achieve both high whiteness and a smooth texture, while rutile titanium dioxide is needed for laminated paper to ensure heat resistance.
Adding titanium dioxide to inks enhances printing gloss and durability, ensuring no discoloration over long periods of storage.
Emerging Fields: Innovative Applications Empowering Industrial Upgrading
With technological breakthroughs, titanium dioxide has opened up a "second growth curve" in new energy and environmental protection fields, with demand in the new energy sector expected to reach 15% by 2025.
The new energy sector has become a core growth driver: In lithium batteries, titanium dioxide can be purified into battery-grade titanium dioxide, used as a dopant in lithium iron phosphate cathodes to improve cycle life, or used to prepare lithium titanate anodes to achieve fast-charging safety characteristics.
The photovoltaic field has seen even greater breakthroughs. Photovoltaic glass coated with nano-titanium dioxide reduces light reflection and significantly improves power generation efficiency; 1GWh of power battery requires 15 tons of titanium dioxide.
In the environmental field, it demonstrates green value: the photocatalytic properties of nano-anatase titanium dioxide can decompose pollutants such as formaldehyde and TVOCs. After using this material in the sound barriers of Japanese highways, annual nitrogen oxide emissions were reduced by several tons.
In wastewater treatment, its catalytic action can degrade dyes and antibiotics into harmless substances. A water plant in Singapore has reduced its post-treatment costs to one-third of traditional methods.
Fine chemicals and biomedicine have also seen breakthroughs: In cosmetics, titanium dioxide serves as a non-toxic sunscreen and concealer, combining safety and coverage.
In the biomedical field, surface-modified titanium dioxide can be used as a drug carrier for targeted delivery or to create fluorescent sensors for early disease diagnosis.
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