Specialty Titanium Dioxide Supplier

Q&A on TIO2 for High-Weatherability Coat

Applicable scenarios: exterior architectural paint, fluorocarbon coatings, industrial anti-corrosion topcoats, construction machinery paints, photovoltaic backsheet coatings, and outdoor powder coatings.

A: No. A high titanium dioxide content does not necessarily mean good weather resistance. For high weather resistance, priority should be given toRutile crystal form, dense silicon-aluminum-zirconium composite coating; part High weather-resistant grade (R960, CR828）Because of the high coating ratio, TiO2The content will be slightly lower, but the anti-chalking performance is far superior to that of high TiO2Lightweight coating products.

Q1: When formulating outdoor high‑weatherability coatings, is it always better to choose titanium dioxide pigment with the highest possible TiO2 content?

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A: The key difference lies in the coating. A thin aluminum coating with general-purpose rutile is suitable for indoor use or short-term outdoor applications;The high weather-resistant version requires a dense silicon coating., can effectively inhibit TiO₂Photocatalysis protects the resin matrix; high-end grades use the chloride process combined with thick silicon.Zirconium cladding technology involves high raw material and equipment costs, resulting in a higher selling price.WeCustom grades can be approximated through optimization of the coating formulation. Metrics. When procuring, require suppliers to provide accelerated aging (xenon lamp / QUV) test reports; do not rely solely on datasheets.

Q2: Why does some rutile titanium dioxide powder out in the open weather turn to powder within half a year, while other types remain stable for many years? What makes this brand so expensive?

① When mixed with anatase, chalking and fading occur within a short period.

② Using a general-purpose, lightly coated rutile does not achieve long-term weather resistance; even if A general-purpose grade does not necessarily mean high weather resistance;

③ Insufficient dispersion and grinding lead to agglomeration of titanium dioxide, which reduces opacity and accelerates localized aging.

④ The resin system has poor weather resistance, even with excellent titanium dioxide (including ）It also won’t extend the coating’s service life; the pigment and resin must be compatible.

Q3: When using titanium dioxide in high-weatherability coatings, what are some common pitfalls in the formulation?

A: Prioritize small-scale testing and board fabrication, while also doing The sample is compared with a standard flat panel; an artificial accelerated aging test is conducted, and the following are recorded: light transmittance retention, color difference ΔE, and chalking grade. Simultaneously, a dispersion test is performed to observe the panel surface for particles or white spots. Only after passing these tests do the process proceed to pilot production and mass production.

Q4: How can high weather-resistant coatings quickly assess titanium dioxide, and how to... MainstreamConduct benchmark verification for the grade?

A: Yes. For special pigment paste systems, fluorocarbon systems, and special powder systems, we can adjust the coating and particle size distribution, and provide one-stop technical services including small-batch samples, color matching support, trial production follow-up, and incoming material inspection; comparison Short lead times, support for small-batch modified customization, rapid after-sales technical service response, and performance comparable to mainstream overseas grades, helping reduce raw material costs.

Q5: Can titanium dioxide for high-weatherability coatings be custom-produced in small batches? Compared to... What are the advantages?