EI class fire glass silica

Silica Materials for Fire-Resistant Glass - Product Brochure Manufacturer: Shandong Zhonglian Chemical Co., Ltd. 1. Product Overview Shandong Zhonglian Chemical focuses on the pain points of fire-resistant glass industry, and develops two series of special silica materials in liquid and solid forms, fully compatible with the mainstream production routes of intumescent fire-resistant glass. With high-purity amorphous silica as the core functional component, the products maintain high transparency at room temperature and form a dense thermal insulation refractory layer through phase change at high temperature, stably covering fire resistance ratings from 0.5h to 3.0h. Aiming at the common industry defects of traditional sodium silicate system, such as alkali efflorescence, short weathering life and easy burn-through at high temperature, as well as the production pain points of ordinary fumed silica such as poor dispersibility and low slurry efficiency, this series of products achieves triple improvements in optical performance, fire resistance and process adaptability through precise particle size control and surface modification technology. Widely used in building curtain walls, fire partitions, fire doors and windows, rail transit, data centers and other scenarios, the products comply with major domestic and foreign fire standards such as GB, EN and ISO. 2. Two Production Process Solutions For fire-resistant glass manufacturers of different scales and different technical routes, we provide two corresponding material solutions: Solution 1: In-house Slurry Preparation Solution (Potassium Silicate System) Suitable for Small and medium-sized fire-resistant glass factories and new material processing plants with independent formula R&D capability and desire to control raw material costs. Solution Description Customers purchase high-purity fumed silica powder, prepare aqueous dispersion by wet grinding in-house, compound with additives such as glycerol, and then react with Part B potassium hydroxide solution to form potassium silicate-based fire-resistant gel in-situ, which is poured to make intumescent fire-resistant glass. Corresponding Product ZLPSIL-MF200 High Purity Fumed Silica Powder Solution Advantages Flexible and controllable raw material cost, high degree of freedom in formula adjustment, suitable for multi-category and small-batch flexible production. Solution 2: Two-component Pre-formulated Solution (Silica Gel System) Suitable for Medium and large-scale fire-resistant glass manufacturers and curtain wall engineering contractors pursuing mass production stability and high product qualification rate. Solution Description Adopting mature A+B two-component process: Part A is pre-prepared nano silica dispersion, mixed with Part B potassium hydroxide solution in proportion on site, and forms inorganic fire-resistant gel after cross-linking and curing. This process features mature formula, simple operation and high batch consistency, and is the mainstream mass production process for high-end fire-resistant glass. Corresponding Product ZLLSIL-MF200 Silica Dispersion (Colloidal Silica for Fire-Resistant Glass) Solution Advantages Simplified production process, high product qualification rate, suitable for large-scale stable mass production, and strong product performance uniformity. 3. Gradient Response Fire & Thermal Insulation Mechanism Based on the temperature phase change characteristics of nano silica, this series of products constructs a step-by-step protection logic, which plays a role layer by layer with the rise of fire temperature, ensuring the integrity and thermal insulation of fire-resistant glass throughout the process: 1.Normal Transparency Stage (Room Temperature) Nano silica particles are uniformly dispersed in the aqueous system to form a homogeneous transparent colloid, with visible light transmittance stably around 78%, no fog and no blue hue. The visual difference from ordinary float glass is very small, fully meeting the requirements of architectural daylighting and decorative aesthetics. 2.Initial Temperature Endothermic Stage (100℃~200℃) Bound water and crystal water in the colloid evaporate gradually with the increase of temperature, absorbing a large amount of ambient heat through phase change, effectively delaying the temperature rise rate of the unexposed side and postponing the appearance of temperature inflection point, buying time for evacuation. 3.Medium Temperature Heat Blocking Stage (300℃~600℃) Nano silica particles rapidly dehydrate and polycondensate, spontaneously forming a porous honeycomb inorganic ceramic skeleton, with thermal conductivity dropping sharply to below 0.12 W/(m·K), greatly blocking the heat conduction path and realizing core thermal insulation protection. 4.High Temperature Shield Formation Stage (above 600℃) Silica is fully sintered to form a dense and rigid high-purity SiO₂ refractory barrier (melting point above 1700℃), and firmly bonds the glass fragments fractured at high temperature, maintaining the integrity of the fire barrier and completely blocking the penetration of flame, smoke and toxic gases. 4. Core Product Specifications 4.1 ZLLSIL-MF200 Silica Dispersion (Colloidal Silica for Fire-Resistant Glass) This product is a special Part A for two-component fire-resistant gel. All indicators strictly implement internal quality control standards and pass third-party SDS safety testing: 表格 Item Standard Range Typical Value Test Standard SiO₂ Content 43%~47% 45% Gravimetric method Deionized Water Content 48%~50% 49% Internal QC Glycerol Additive Content 5%~7% 6% Internal QC CAS No. (Silica) - 112945-52-5 GHS Classification Appearance Milky white homogeneous liquid Milky white homogeneous liquid Visual inspection pH Value (25℃) 8.5~10.5 9.5 GB/T 7977 Kinematic 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/environmental Not classified GHS Rev.11 Transport Property Non-restricted goods Non-restricted goods RID/IATA/IMDG 4.2 ZLPSIL-MF200 High Purity Fumed Silica Powder This product is an upgraded high-purity powder dedicated for fire-resistant glass raw materials. Tested by a third-party authority, the silica purity can reach 99.9992%: 表格 Item Unit Test Value Test 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 BET Specific Surface Area m²/g 90 ± 5 GB/T 10722 Loss on Ignition (1000℃) % ≤1.5 GB/T 3284-2015 Appearance - White ultrafine fluffy powder Visual inspection 4.3 Packaging, Storage & Transportation 表格 Model Standard Packaging Recommended Storage Conditions Shelf Life (Unopened) ZLLSIL-MF200 25kg plastic drum, 200kg plastic drum, 1000kg IBC tote Cool & dry at 5~35℃, keep away from light and freezing 12 months ZLPSIL-MF200 20kg kraft paper bag, 25kg kraft paper bag, bulk bag Sealed, cool & dry, moisture-proof 24 months 5. Core Product Advantages 1.Stepwise fire protection with sufficient performance redundancy Through precise control of silica particle size and crystal form distribution, four-stage temperature response is realized. The fire resistance is stable, with about 15% performance redundancy compared with products of the same grade. It can stably meet the test requirements of national and European fire resistance ratings, with high product test pass rate. 2.High transparency and weather resistance with longer service life Narrow particle size distribution + high-purity formula ensure high transparency 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, and the service life is much longer than traditional sodium silicate system. 3.Strong process adaptability and high production efficiency ZLLSIL-MF200 has excellent shear thinning property, good pouring fluidity and easy degassing, adapting to various processes such as vacuum pouring and atmospheric pouring. ZLPSIL-MF200 is an upgraded high-dispersion powder, with less agglomeration and slow sedimentation during slurry preparation, and lower system viscosity at the same solid content, which can effectively improve grinding production efficiency. 4.Complete high-temperature structure and reliable safety performance 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, meeting the requirements of passive fire safety. 5.Inorganic, eco-friendly and strong compliance All-inorganic formula, free of organic solvents and toxic substances, no toxic fumes when burning, complying with green building and fire protection environmental requirements. The products are equipped with a full set of compliance documents such as SDS, COA and test reports, meeting the market access requirements at home and abroad. 6.Flexible customization and full-process service Parameters such as solid content, particle size, pH value and surface modification can be customized according to customer's formula, process and fire resistance requirements. Equipped with professional application technical team, we provide full-process technical services such as formula debugging, process optimization and problem troubleshooting. 6. Selection & Operation Guide 6.1 Selection Recommendations Large-scale mass production fire-resistant glass factories: Recommend ZLLSIL-MF200 pre-formulated silica dispersion, two-component process, good batch stability, high production efficiency, suitable for all grades from A1.0 to A3.0. Small and medium-sized flexible production factories: Recommend ZLPSIL-MF200 high-purity fumed silica powder, independent formula adjustment, controllable cost, suitable for multi-variety small-batch production. Ordinary indoor partition projects: Recommend ZLLSIL-MF200 basic type, excellent cost performance, meeting A0.5~A1.0 requirements. High-rise/data center high-grade projects: Recommend ZLLSIL-MF200 high-solid customized type, ensuring fire resistance limit above 2.0h. 6.2 Storage & Operation Notes ZLLSIL-MF200 Silica Dispersion The storage environment temperature shall be controlled at 5~35℃. Direct sunlight and freezing below 0℃ are prohibited. Freezing will cause irreversible agglomeration of the colloid and damage the performance. Use up as soon as possible after opening, and seal the remaining part to prevent water evaporation and impurity contamination. Stir slowly and evenly before use to eliminate slight sedimentation after long-term storage. Avoid high-speed shearing during stirring to prevent introducing a large number of bubbles. When mixing with potassium hydroxide, stir at a constant speed according to the recommended ratio to ensure uniform reaction. Ensure the glass cavity is clean and dry before pouring to avoid oil affecting the transparency and adhesion of the gel layer. ZLPSIL-MF200 High Purity Fumed Silica Powder Store sealed in a cool and dry environment, moisture-proof and waterproof. Seal promptly if packaging is damaged to prevent moisture absorption and agglomeration. When preparing dispersion, it is recommended to feed materials step by step, with high-speed dispersion and grinding process to ensure full dispersion of powder and avoid agglomerated particles affecting the optical performance of the finished gel layer. 7. Core Application Fields 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, and meeting the outdoor use requirements of curtain wall weather resistance and UV resistance. 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, suitable for all kinds of public and commercial buildings. 3.Fire Doors & Windows Suitable for Class A and Class B fire door vision panels, as well as various fixed and movable 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 high-level fire safety requirements of high pedestrian flow places. 5.Data Centers & Industrial Equipment Rooms Used for fire separation in important equipment places such as equipment rooms, power distribution rooms, archives and data centers, 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. Quality & Service Guarantee 8.1 Quality Control Full-process automated production with real-time online monitoring of key indicators. Each batch of products is issued with a complete test report, with small fluctuations in solid content, particle size and pH value, ensuring stable production process for customers. 8.2 Qualification & Certification 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. A full set of compliance documents can be provided. 8.3 Technical Service Equipped with professional application technical team, providing formula debugging, process optimization, problem troubleshooting and other technical services, assisting customers to quickly complete product development and mass production. 8.4 Supply Guarantee Own raw material synthesis production line with sufficient capacity. Regular specifications are in stock, which can stably guarantee the delivery of large-volume orders. 9. 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 customized requirements on purity, particle size distribution, impurity content and colloidal stability, focusing on 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 at the same time. 2.What are the advantages of ZLPSIL-MF200 compared with ordinary fumed silica? ZLPSIL-MF200 is a special model upgraded by our company for the fire-resistant glass industry. Compared with ordinary fumed silica, it has higher bulk density and better water dispersion performance. It features less agglomeration and lower system viscosity during slurry preparation, which can improve grinding efficiency, reduce particle defects in the finished gel layer, deliver better optical transparency, and is more suitable for high-end fire-resistant glass production. 3.What is the main difference between silica sol system and traditional sodium silicate system fire-resistant glass? The sodium silicate system has low cost, but is prone to alkali efflorescence and poor UV resistance, and will yellow and blister in 2~3 years, mostly used in low-end temporary buildings. The silica sol system features high transparency and strong weather resistance, with stable performance for more than 10 years and better high-temperature thermal insulation, which is the mainstream technical route for high-end fire-resistant glass. 4.Can your silica sol be used with other brands of potassium hydroxide? Yes. Our product is a general-purpose Part A, which can be used with conventional commercial industrial grade potassium hydroxide solution. It is recommended to conduct a small test to verify the curing speed and final performance before batch use. 5.Can the product be used for curved/special-shaped fire-resistant glass? Yes. ZLLSIL-MF200 has good fluidity and curing controllability, adapting to the pouring process of curved and special-shaped glass. The gel layer is uniform after curing, without sagging and bubble defects. 6.Will the product freeze and get damaged during winter transportation in northern China? ZLLSIL-MF200 will freeze below 0℃, causing irreversible agglomeration of the colloid. Therefore, thermal insulation measures shall be taken for winter transportation in northern China. It is recommended to choose insulated transportation or deliver from nearby warehouses. 7.What are the storage conditions and shelf life of the products? ZLLSIL-MF200 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 has a shelf life of 24 months under dry and sealed conditions. 8.Can products with different solid content and particle size 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. 9.How long is the delivery time after placing an order? 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 according to order quantity and customization difficulty. For details, please contact sales for confirmation. 10.What is the corresponding HS code and export tax rebate rate? ZLPSIL-MF200 silica powder corresponds to HS code 2811229000, and ZLLSIL-MF200 silica sol corresponds to HS code 2811221000. The current export tax rebate rate for both is 13%. 10. 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 I. Basic Product Knowledge 1.Q: What material is this colloidal silica for fire glass? What is its core component? A: This is an inorganic silicon-based functional material. Its core component is high-purity amorphous nano-silica, which forms a stable colloidal dispersion system with deionized water as the dispersion medium. It contains no harmful components such as organic resins or heavy metals, and serves as the core material for a new generation of grouted insulating fire glass. 2.Q: What type of fire glass production is this product mainly suitable for? A: It is specially developed for Class A grouted insulating fire glass, fully compatible with the mainstream production process of poured laminated fire glass. It can also be used for formulation modification of coated composite fire glass, covering the production of fire doors/windows, indoor fire partitions, fire curtain walls and other full-scenario products. 3.Q: What is the essential difference between this product and traditional water glass (sodium silicate) fire-resistant liquid? A: Traditional water glass is mainly composed of sodium silicate with high sodium content, which tends to cause alkali efflorescence, whitening and poor weather resistance after application. This product is based on high-purity nano-silica with sodium oxide content ≤0.3%, which inhibits alkali efflorescence at the source. Meanwhile, its light transmittance, weather resistance and fire stability are significantly better than water glass systems. 4.Q: Is colloidal silica for fire glass the same product as ordinary industrial silica sol? A: No, they are not the same. Ordinary industrial silica sol focuses on general bonding and film-forming functions, with wide particle size distribution and high impurity content. This product is customized for fire glass, with precisely regulated particle size distribution and surface charge, optimized high-temperature phase transition behavior and curing compatibility, specially adapted to the fire resistance and optical requirements of fire glass. 5.Q: What specifications and models are available for this product? A: It is divided into five grades by solid content: 30%, 40%, 45%, 50%, 55%; and four grades by average particle size: 60nm, 80nm, 100nm, 120nm. It is also divided into two major series: general purpose grade and curtain wall grade. Models can be customized according to fire resistance rating, production process and application scenarios. 6.Q: Which national or industrial quality standards does this product comply with? A: Its core performance meets the material requirements for Class A insulating fire glass in GB/T 15763.1 Safety Glass for Building Use – Part 1: Fire Resistant Glass, and also complies with the quality specifications of GB/T 27974 Colloidal Silica for Industrial Use. Curtain wall grade products additionally meet the relevant weather resistance test standards for building curtain walls.