Overview
Potassium water glass is an aqueous solution of potassium silicate, characterized by its high-density formulation compared to standard variants. As a key inorganic binder, it offers superior thermal resistance (up to 1000°C) and chemical stability versus sodium-based counterparts. The compound's industrial significance stems from its unique combination of adhesive strength and refractory properties. Modern production involves fusing silica sand with potassium carbonate at 1300-1400°C, followed by dissolution under pressure. Dense-type formulations contain 40-50% solids with controlled viscosity for optimal application performance.
Physical and Chemical Properties
The material exhibits a viscosity range of 100-500 cP (25°C) and pH values between 11-13, requiring careful handling. Its film-forming capability derives from the polymerization of silicate anions upon water evaporation, creating a three-dimensional SiO2 network. Key differentiators include lower freezing susceptibility (-10°C) than sodium silicates and reduced efflorescence. The SiO2/K2O molar ratio (typically 2.5:1) determines chemical reactivity - higher ratios increase gel time but improve acid resistance. Density measurements at 20°C provide quality control for commercial batches.
Main Applications
In refractory industries, dense potassium silicate serves as the primary binder for aluminum silicate castables, demonstrating 30% higher bonding strength than conventional binders at 800°C. Welding electrode coatings utilize its arc stabilization properties and slag-forming characteristics. The construction sector employs it in acid-resistant mortars and concrete sealers, where its reduced alkali migration prevents surface degradation. Emerging applications include fire-resistant coatings for steel structures and as an eco-friendly alternative to organic binders in foundry molds, complying with VOC regulations.
Safety and Storage
As a strong alkaline solution (pH >11), potassium water glass requires chemical-resistant PPE including nitrile gloves and face shields. Spill management involves neutralization with weak acids (e.g., citric acid) followed by ample water flushing. Storage in polyethylene or stainless steel containers prevents silicate crystallization. Maintain temperatures above 5°C to avoid viscosity changes, with shelf life up to 12 months in unopened drums. Bulk transport typically uses IBC totes with proper UN 3253 classification for alkaline liquids.
B2B Procurement Guide
Industrial buyers should specify technical parameters including: molar ratio (±0.1), density (±0.02 g/cm³), and viscosity range. Custom modifications like potassium methyl silicate derivatives are available for specialized coatings. Quality verification includes titration testing for active content and turbidity checks for colloidal stability. Major Chinese producers concentrate in Shandong and Henan provinces, with MOQs starting at 1 metric ton for drum shipments. Container-load purchases (20-25 tons) typically secure 8-12% price advantages.
Related Manufacturers
- 主营：丙乳砂浆、结构加固、道钉锚固剂、水玻璃砂浆、环氧砂浆、氯丁胶乳水泥砂浆、不发火砂浆、防静电水泥砂浆、高强无收缩灌浆料、支座灌浆料、环氧树脂结构胶、聚合物防腐砂浆、路面修补料、耐酸胶泥、不发火细石混凝土、混凝土色差修复剂、聚合物砂浆、聚合物水泥浆、钢筋阻锈剂、混凝土抗渗剂、抗硫酸盐防腐剂、铝酸盐无机防腐砂浆、金刚砂耐磨地坪、井盖修补料
- 主营：密实型钾水玻璃胶泥、无机涂料
- 主营：防水sbs、沥青sbs、油毡瓦、eva防水、k11防水、pvc防水、沥青瓦、度低温、pvc卷材、cps反应、卷材sbs、tsc防水、hdpe防水、fyt1防水、3sbs防水、卷材pe膜、pe高分子、聚氯乙烯、聚酯复合、防水涂料、木屋瓦片、防水屋面、面sbs防水、轻钢别墅、自沾卷材
- 主营：水泥浆、网带pet、聚合物、涂料sbs、建筑sbs、贴方向、sbs卷材、层施工、产设备、防水剂、土工布、油毡瓦、焊接机、彩钢瓦、雨水斗、k11防水、琉璃瓦、hst卷材、阳光房、树脂瓦、雨水管、120防水、聚氨酯、镀锌板、贴装置
- 主营：高强聚合物修补砂浆、地面修补剂、混凝土防碳化涂料、钾水玻璃胶泥、环氧树脂砂浆、防腐砂浆、不发火混凝土、混凝土钢筋阻锈剂
- 主营：盲道砖、耐酸砖、透水砖、耐酸瓷砖、防腐胶泥、耐酸地砖、环氧树脂、耐酸瓷板、地砖耐碱、环氧胶泥、陶瓷透水砖、防腐耐酸砖、600*600耐酸砖、20耐酸砖、呋喃树脂胶泥、耐酸碱瓷砖、全瓷盲道砖、压延微晶板、微晶铸石板、耐酸胶泥、KPI耐酸胶泥、300*300耐酸砖
- 主营：灌浆料、水泥道路修补料、超细水泥、钾水玻璃胶泥、聚合物防水防腐砂浆、高强修补砂浆、环氧树脂砂浆、丙乳砂浆、道钉锚固剂、自流平水泥、混凝土防碳化涂料、聚合物防腐涂料、混凝土增强剂
- 主营：压浆剂、平色剂、压浆料、密实剂、聚合物、阳离子、防水剂、灌浆料、混凝土、防冻剂、酸酯乳液、拉毛砂浆、超细水泥、耐酸胶泥、路面修补、耐酸水泥、重力砂浆、氯丁胶乳、丙乳乳液、界面砂浆、水性环氧、盾构管片、修补砂浆、轨道胶泥、防水砂浆
- 主营：胶泥粉料、耐酸胶泥、耐酸耐温砖、水玻璃耐酸混凝土、耐酸混凝土、加砌筑耐酸砖、内衬玻璃鳞片、耐酸耐温瓷砖
- 主营：油毡瓦、沥青瓦、玻纤瓦、密实钾水玻璃混泥土、sbs防水卷材、自粘防水卷材、高分子防水卷材、pvc防水卷材、三元乙丙橡胶防水卷材、高聚物改性沥青防水卷材、聚氯乙烯防水卷材、非沥青基防水卷材、预铺防水卷材、湿铺防水卷材、聚乙烯丙纶防水卷材、隧道专用防水卷材、耐根穿刺防水卷材、自粘橡胶防水卷材、防水涂料
- 主营：防水sbs、玻纤瓦、tpz防水、高密度聚乙烯防水涂料、瓦油毡、bac自粘、卷材sam、eva防水、彩钢瓦、卷材tpo、k11防水、高分子、pvc防水、沥青瓦、eva自粘、pet自粘、hdpe防水、fyt1防水、tpob防水、聚氯乙烯、卷材包工、水泥路面、彩油毡瓦、水卷卷材、聚酯复合、反应粘结
- 主营：ppc防水、保护层、玻纤瓦、密实型钾水玻璃胶泥、沙皮瓦、水泥浆、保护膜、网带pet、隔离层、外墙砖、聚合物、封檐板、防水板、乙烯pvc、乳胶漆、隔热漆、雨水管、雨水槽、地坪漆、落水管、沥青sbs、排水管、贺德克、落水槽、油毡瓦、钢结构
- 主营：防水sbs、玻纤瓦、沥青sbs、沥青胶、prm防水、油毡瓦、eva防水、k11防水、pvc防水、沥青瓦、屋面板、eva高铁、涂料k11、卷材sbs、聚乙烯、hdpe防水、fyt1防水、卷材1卷、pvcs防水、hut1防水、pe高分子、pe膜防水、聚氯乙烯、县sbs防水、卷材先做
- 主营：耐火材料、隔热保温材料、耐磨防腐材料、密实型钾水玻璃混凝土、保温防腐材料、耐火保温材料、耐磨隔热材料
- 主营：不发火防静电耐磨地面、不发火防静电砂浆、不发火细石混凝土、密实型钾水玻璃砂浆、nfj 金属骨料