ISO 3009 fire resistant glass silica

Silica Series for Fire-Resistant Glass - Product Specification Manufacturer: Shandong Zhonglian Chemical Co., Ltd. 1. Product Overview Product Title Silica Products for Fire-Resistant Glass | ZLLSIL-MF200 Silica Dispersion (Colloidal Silica for Fire-Resistant Glass) · ZLPSIL-MF200 High Purity Fumed Silica Powder Brief Description Shandong Zhonglian Chemical offers a full range of silica products dedicated to fire-resistant glass, including pre-formulated silica dispersion (sol-based Part A) and high-purity functional silica powder, adapted to the two mainstream production processes of intumescent fire-resistant glass. Featuring high-purity amorphous silica as the core component, the products remain highly transparent at room temperature and form a dense thermal insulation layer at high temperature. They are suitable for fire-resistant glass with fire resistance ratings from 0.5h to 3.0h, and replace the traditional sodium silicate system to solve industry pain points such as alkali efflorescence, poor weather resistance and yellowing. Widely used in building curtain walls, fire partitions, fire doors and windows, rail transit, data centers and other scenarios, the products comply with major global fire standards including GB, EN and ISO. 2. Two Major Production Processes & Corresponding Products Process 1: In-house Dispersion Process (Potassium Silicate Base) Process Description Customers purchase high-purity silica powder, grind and prepare it into aqueous dispersion in-house. After adding additives such as glycerol, it reacts with Part B potassium hydroxide solution to form potassium silicate-based fire-resistant gel in-situ, which serves as the interlayer material for cast-in-place fire-resistant glass. Corresponding Product: ZLPSIL-MF200 High Purity Fumed Silica Powder Process 2: Two-component Pre-formulated Process (Silica Gel Base) Process Description This process adopts a two-component (A+B) system. Part A is a pre-formulated silica dispersion (nano colloidal silica), which is mixed with Part B potassium hydroxide solution in proportion on site. After cross-linking reaction, it forms inorganic fire-resistant gel and cures after pouring. This process features stable formula, simple operation and high product consistency, and is the mainstream production process for high-end fire-resistant glass. Corresponding Product: ZLLSIL-MF200 Silica Dispersion (Colloidal Silica for Fire-Resistant Glass) 3. Detailed Product Introduction Core Fire & Thermal Insulation Mechanism Based on nano-scale amorphous silica, the products undergo stepwise physical and chemical phase changes during temperature rise in fire, ensuring the integrity and thermal insulation of fire-resistant glass throughout the process: 1.Room temperature stage: Nano-silica particles are uniformly dispersed in the aqueous system to form a highly transparent colloid with visible light transmittance of 75%~82%, free of distortion and fogging, fully meeting architectural daylighting and decoration requirements. 2.Initial heating stage (100~200℃): Bound water and crystal water in the colloid evaporate gradually, absorbing a large amount of ambient heat, effectively delaying the temperature rise on the unexposed side of the glass and postponing the temperature inflection point. 3.Medium temperature stage (300~600℃): Nano-silica particles rapidly dehydrate and polycondensate to form a porous honeycomb inorganic ceramic skeleton, with thermal conductivity dropping sharply to ≤0.12 W/(m·K), greatly blocking heat conduction and realizing core thermal insulation. 4.High temperature stage (above 600℃): Silica is fully sintered to form a dense and rigid high-purity SiO₂ refractory layer (melting point above 1700℃), and firmly bonds glass fragments fractured at high temperature, maintaining the integrity of the fire barrier and completely blocking the penetration of flame, smoke and toxic gases. Comparison of Technical Systems 表格 Dimension Traditional Sodium Silicate System Zhonglian Silica-based System Core material Sodium silicate (water glass) High-purity nano silica Transparency Translucent, prone to blue haze Highly transparent, close to base glass Weather resistance Alkali efflorescence and yellowing in 2~3 years <3% optical attenuation after 10 years, no efflorescence Fire resistance Prone to burn-through and gel peeling at high temperature Forms dense ceramic layer at high temperature, stable structure Environmental performance High alkalinity, difficult waste disposal Inorganic and eco-friendly, no toxic fumes when burning Applicable rating Mostly low-end products of 0.5h~1.0h Suitable for high-end products of all ratings 0.5h~3.0h 4. Product Specifications 4.1 ZLLSIL-MF200 Silica Dispersion (Colloidal Silica for Fire-Resistant Glass) This product is Part A of the pre-formulated two-component fire-resistant gel, with core indicators complying with third-party SDS standards: 表格 Item Target Value Typical Value Standard SiO₂ Content 45% ± 2% 45% Internal QC Deionized Water Content 48%~50% 49% Internal QC Glycerol Content 5%~7% 6% Internal QC CAS No. (Silica) — 112945-52-5 GHS Classification Appearance Milky white uniform liquid Milky white uniform liquid Visual inspection pH Value 8.5~10.5 9.5 GB/T 7977 Viscosity (25℃) ≤50 mPa·s 35 mPa·s GB/T 2794 Average Particle Size 10~20 nm 15 nm DLS GHS Hazard Classification Not classified for physical, health and environmental hazards Not classified GHS Rev.11 Transport Classification Non-restricted goods Non-restricted goods RID/IATA/IMDG 4.2 ZLPSIL-MF200 High Purity Fumed Silica Powder This product is an upgraded R&D high-purity powder for fire-resistant glass raw material, with purity of 99.9992% tested by third party: 表格 Item Unit Test Result Standard Silicon Dioxide (SiO₂) % 99.9992 Calculated by difference Aluminum (Al) mg/kg 0.65 GB/T 3284-2015 Calcium (Ca) mg/kg 1.82 GB/T 3284-2015 Iron (Fe) mg/kg 2.83 GB/T 3284-2015 Sodium (Na) mg/kg 0.42 GB/T 3284-2015 Potassium (K) mg/kg 0.26 GB/T 3284-2015 Chromium (Cr) mg/kg 0.57 GB/T 3284-2015 Other Heavy Metals mg/kg All <0.1 GB/T 3284-2015 Specific Surface Area m²/g 90 ± 5 GB/T 10722 Loss on Ignition % ≤1.5 GB/T 3284-2015 Appearance — White ultrafine powder Visual inspection 4.3 Packaging, Storage & Transportation 表格 Model Standard Packaging Storage Conditions Shelf Life ZLLSIL-MF200 25kg drum, 200kg drum, 1000kg IBC tote Cool & dry at 5~35℃, avoid direct sunlight and freezing 12 months unopened ZLPSIL-MF200 20kg bag, 25kg bag, bulk bag Sealed, cool & dry, moisture-proof 24 months unopened 5. Core Features & Advantages 1.Stepwise fire & thermal insulation with stable performance Precisely control silica particle size and crystal form to realize four-stage temperature response, with stable fire resistance. It can accurately match the test requirements of national and European standards for different fire resistance ratings, with high product pass rate. 2.High transparency and weather resistance Narrow particle size distribution and high-purity formula ensure high transparency, no fog and no impurities of the colloid at room temperature. Resistant to UV radiation and high-low temperature cycles, no yellowing, no alkali efflorescence and no blistering after long-term use. Optical attenuation of curtain wall grade products is less than 3% after 10 years. 3.Excellent process adaptability The pre-formulated ZLLSIL-MF200 features excellent shear thinning property, good pouring fluidity and easy degassing, adapting to various production processes such as vacuum pouring and atmospheric pouring. ZLPSIL-MF200 powder has good dispersibility, easy to grind into slurry, with large formula adjustment space. 4.Strong high-temperature structural integrity Forms a continuous and dense ceramic layer after high-temperature sintering, with strong adhesion to glass substrate. It can effectively fix glass fragments fractured at high temperature, no peeling and no splashing, maintain the integrity of fire barrier and block smoke penetration. 5.Inorganic, eco-friendly, safe and non-toxic All-inorganic formula, free of organic solvents and toxic substances, no toxic fumes when burning, complying with green building and fire protection environmental requirements. 6.Full set of compliance certifications Product performance complies with domestic and foreign fire-resistant glass standards such as GB/T 15763.1, GB 46030, EN 13501-2 and ISO 3009. Full set of compliance documents including SDS, COA and test reports can be provided. 7.Upgraded powder with high dispersity and high bulk density ZLPSIL-MF200 is an upgraded R&D product of our company. Different from ordinary fumed silica, it has higher bulk density and excellent high dispersibility. It features slow sedimentation and less agglomeration during slurry preparation, and lower system viscosity at the same solid content, which can effectively improve grinding production efficiency, reduce particle defects in the finished gel layer, and ensure optical transparency. 6. Product Advantages & User Instructions 6.1 Core Advantages Industrial chain advantage with controllable cost: Own raw material synthesis production line, can reduce cost based on high-purity recycled silicon technology, with significant price advantage under the same performance, while ensuring stable supply. High batch consistency: Full-process automated production with real-time online monitoring of key indicators. Each batch is issued with complete test report, with small fluctuations in solid content, particle size and pH value, ensuring stable production process for customers. Strong customization capability: Parameters such as solid content, particle size distribution, pH value and surface modification can be customized according to customer's formula, process and fire resistance requirements, providing exclusive solutions. Full-process technical support: Equipped with professional application technical team, providing technical services such as formula debugging, process optimization and problem troubleshooting, assisting customers to quickly complete product development and mass production. 6.2 Usage & Storage Instructions ZLLSIL-MF200 Silica Dispersion Storage: Store in a cool and dry room at 5~35℃, avoid direct sunlight and freezing. Freezing will cause irreversible agglomeration and affect performance. Use up as soon as possible after opening, and seal the remaining product to avoid water evaporation and impurity contamination. Usage: Stir slowly and evenly before use to eliminate slight sedimentation after long-term storage. Avoid high-speed shearing during stirring to prevent introducing large amounts of bubbles. When mixing with Part B potassium hydroxide, stir at constant speed according to the recommended ratio to ensure uniform reaction. Ensure the glass cavity is clean and dry before pouring to avoid oil and impurities affecting gel transparency and adhesion. ZLPSIL-MF200 High Purity Fumed Silica Powder Storage: Store sealed in a cool and dry environment, moisture-proof and waterproof. Seal promptly if packaging is damaged to avoid moisture absorption and agglomeration. Usage: When preparing dispersion, it is recommended to add materials step by step, with high-speed dispersion and grinding process to ensure full dispersion of powder and avoid agglomerated particles affecting product transparency. 6.3 Selection Recommendations For in-house low-cost production lines: Choose ZLPSIL-MF200 high-purity fumed silica powder to prepare fire-resistant gel in-house, with strong cost controllability. For high-end stable mass production lines: Choose ZLLSIL-MF200 pre-formulated silica dispersion with two-component process, featuring high product consistency and high production efficiency, suitable for fire-resistant glass of all ratings from A1.0 to A3.0. For indoor fire partitions below 1.0h: ZLLSIL-MF200 basic type is recommended with the highest cost performance. For high-rise buildings and data centers with rating above 2.0h: Choose ZLLSIL-MF200 high-solid customized type to ensure fire resistance limit. 7. Typical Application Scenarios 1.Building Fire-resistant Curtain Walls Widely used in exterior fire-resistant curtain walls of commercial complexes, office buildings, hotels and other buildings, balancing daylighting decoration and fire insulation, adapting to all ratings from A1.0 to A3.0. 2.Indoor Fire Partitions & Fire Walls Used for fire compartment partitions, corridor fire walls and atrium fire partitions in buildings, maintaining transparent visual effect while realizing space separation, improving architectural space quality. 3.Fire Doors & Windows Suitable for Class A and Class B fire door vision panels and various fire windows, improving the fire and thermal insulation performance of door and window systems while meeting daylighting requirements. 4.Rail Transit & Public Buildings Applied in crowded public buildings such as subway stations, high-speed railway stations, airports, hospitals and schools, meeting fire safety requirements of high pedestrian flow places. 5.Data Centers & Equipment Rooms Used for fire separation in important equipment places such as equipment rooms, power distribution rooms and archives, effectively delaying fire spread and ensuring equipment and data security. 6.High-risk Industrial Sites Suitable for fire and explosion-proof buildings in high-risk industrial scenarios such as chemical plants, power plants and warehousing, resistant to high temperature and complex working conditions. 8. Customer Cases & Cooperation Shandong Zhonglian Chemical's silica products for fire-resistant glass have served dozens of leading fire-resistant glass manufacturers in China, and have been applied in benchmark building projects across the country: Super high-rise landmark projects: Applied in fire-resistant glass curtain walls of multiple super high-rise buildings over 200 meters in China, stably passing Class A2.0 fire resistance test. Rail transit projects: Supporting station fire partition projects of subway lines in multiple cities, meeting high-level fire protection requirements of public buildings. Commercial complex projects: Serving fire-resistant glass systems of more than ten large commercial complexes nationwide, combining aesthetics and safety performance. Data center projects: Providing special silica materials for fire-resistant glass for multiple national-level data centers, ensuring fire safety of equipment rooms. 9. Company News & Industry Trends 1.New Product Launch: ZLLSIL-MF200 High-solid Silica Dispersion Officially Mass-produced In August 2026, the 45% solid content silica dispersion independently developed by Shandong Zhonglian Chemical was officially put into mass production. The product maintains excellent fluidity and transparency under high solid content, can greatly reduce the water content of the gel layer, improve the fire resistance limit of fire-resistant glass, and is suitable for the production of Class A3.0 high-grade fire-resistant glass. 2.Company Passed ISO 9001 Quality Management System Annual Audit In June 2026, the company passed the annual supervision audit of ISO 9001:2015 Quality Management System. The quality management system continues to operate effectively, and product quality control capability has been further improved. 3.Industry Exhibition: Present at the 23rd China International Glass Industry Exhibition In May 2026, Shandong Zhonglian Chemical presented the full range of silica products for fire-resistant glass at China International Glass Industry Exhibition in Shanghai, attracting attention and negotiation from many domestic and foreign glass manufacturers. 4.Technology Upgrade: Breakthrough in Recycled High-purity Silicon Source Technology Relying on self-developed purification process, the company realizes the resource utilization of high-purity silica by-produced from optical fiber preform. The performance of the prepared silica materials for fire-resistant glass reaches the same level as virgin materials, with significant cost advantage. 10. Frequently Asked Questions (FAQ) 1.What is the difference between silica for fire-resistant glass and ordinary industrial silica? Silica for fire-resistant glass has strict customized requirements on purity, particle size distribution, impurity content and colloidal stability, focusing on ensuring transparency, weather resistance and high-temperature sintering performance. Ordinary industrial silica has broad specifications and cannot meet the dual optical and fire resistance requirements of fire-resistant glass. 2.What are the two mainstream production processes of fire-resistant glass? Which products do you correspond to respectively? The first is in-house dispersion process: Customers purchase silica powder to prepare dispersion by themselves, and react with potassium hydroxide to form potassium silicate gel, corresponding to our ZLPSIL-MF200 high-purity fumed silica powder. The second is two-component pre-formulated process: directly use pre-prepared Part A silica dispersion mixed with Part B potassium hydroxide, corresponding to our ZLLSIL-MF200 silica dispersion. 3.What are the advantages of ZLPSIL-MF200 compared with ordinary fumed silica? ZLPSIL-MF200 is an upgraded R&D product of our company. Compared with ordinary fumed silica, it has higher bulk density and high dispersibility. It features less agglomeration and lower system viscosity during slurry preparation, which can improve grinding production efficiency, reduce particle defects in the finished gel layer, deliver better optical transparency, and is more suitable for high-end fire-resistant glass production. 4.How to select corresponding products for fire-resistant glass with different fire resistance ratings? For Class A0.5~A1.0, ZLLSIL-MF200 basic type is recommended; for Class A1.0~A1.5, ZLLSIL-MF200 standard type is recommended; for Class A2.0~A3.0, ZLLSIL-MF200 high-solid customized type is recommended. For in-house process, silica powder with corresponding purity can be selected according to fire resistance rating. 5.What are the storage conditions and shelf life of the products? ZLLSIL-MF200 colloidal product should be stored in a cool and dry place at 5~35℃, avoid direct sunlight and freezing, with a shelf life of 12 months unopened. ZLPSIL-MF200 powder product has a shelf life of 24 months under dry and sealed conditions. 6.Can products with different solid content, particle size and pH value be customized? Yes. We have independent R&D and production capacity, and can customize parameters such as solid content, particle size distribution, pH value and surface modification according to customer's formula and process requirements, providing exclusive customized products. 7.Is bubble formation in cast-in-place fire-resistant glass production related to silica raw material? There are many causes of bubbles, including pouring process, insufficient degassing, poor sealing, additive reaction, etc. Our products have undergone strict degassing treatment and contain no micro-bubbles. Meanwhile, our technical team can assist customers in troubleshooting the causes of bubbles and optimize production processes. 8.Why does the gel layer turn yellow after using fire-resistant glass for a period of time? Yellowing of the gel layer is mainly caused by high impurities in raw materials and poor UV resistance. Our products adopt high-purity raw materials with strictly controlled impurity content, and have excellent UV resistance, which can effectively delay yellowing. Optical attenuation of curtain wall grade products is less than 3% after 10 years. 9.How long is the delivery time after placing an order? Do you provide technical support? Regular specification products are in stock and can be delivered within 3~5 working days. For customized products, the delivery cycle is generally 10~20 days. We have a professional technical team providing full-process technical services such as formula debugging, process optimization and problem troubleshooting. 10.What is the corresponding HS code and export tax rebate rate for customs declaration? Will invoice name affect tax rebate? ZLPSIL-MF200 silica powder corresponds to HS code 281122900, and ZLLSIL-MF200 silica sol corresponds to HS code 281122100. The current export tax rebate rate for both is 13%. For powder, "Silicon Dioxide" or "Fumed Silica" can be issued on invoice; for liquid, "Silica Sol", "Silica Dispersion" can be issued. As long as the product name is consistent with the customs HS code, tax rebate can be processed normally. 11. Contact Us Shandong Zhonglian Chemical Co., Ltd. Business scope: Full series of silicon-based materials including food-grade silica, feed-grade silica, silica for fire-resistant glass, industrial-grade silica, etc. Address: Huaiyin District, Jinan City, Shandong Province, China