Overview
Liquid waterproofing agents are advanced chemical formulations designed to protect porous materials like concrete and brick from water ingress. Unlike membrane-based solutions, these agents penetrate the substrate, reacting chemically to form a water-repellent barrier within the material’s matrix. They are favored in modern construction for their invisible protection and breathability, allowing moisture vapor transmission while blocking liquid water. Common active ingredients include silanes, siloxanes, or hybrid polymers, which bond with the substrate to create hydrophobic surfaces. These agents are applied via spray, brush, or roller, making them suitable for both new construction and retrofit projects. Their effectiveness depends on substrate porosity, application technique, and environmental conditions during curing.
Physical and Chemical Properties
Liquid waterproofing agents exhibit low viscosity (20–200 cP) for deep penetration, often reaching depths of 5–10 mm in concrete. Their surface tension is typically <25 mN/m, enabling capillary action into micropores. Silane-based formulations volatilize quickly, leaving active components to react with substrate hydroxyl groups, while siloxanes offer slower penetration but broader pore coverage. Key performance metrics include water absorption reduction (often >95%), chloride ion resistance, and alkaline stability (pH 9–12). UV-resistant variants maintain efficacy under sunlight, critical for exterior applications. Most commercial products are solvent-free or low-VOC, complying with environmental regulations like LEED. Accelerated aging tests simulate 10–20 years of service life under standard conditions.
Main Applications
In construction, these agents are extensively used for below-grade structures (basements, tunnels) to resist hydrostatic pressure. Bridge decks and parking garages benefit from their chloride-ion blocking, preventing rebar corrosion. Roofing applications include tile impregnation and terrace coatings, where they reduce freeze-thaw damage. Industrial uses include wastewater treatment plants and chemical storage facilities requiring acid/alkali resistance. Historical building restoration often employs colorless formulations to preserve aesthetics while protecting aged masonry. Recent innovations include photocatalytic variants for self-cleaning surfaces and nano-modified agents for enhanced crack-bridging capabilities in dynamic structures.
Safety and Storage
While generally low in toxicity, these agents require handling precautions due to potential skin/eye irritation. Silane-based products release alcohol during curing, necessitating adequate ventilation. Fire hazards exist with solvent-borne formulations (flash points 40–60°C). Storage demands original containers with tight seals to prevent moisture absorption or evaporation. Bulk storage tanks should incorporate nitrogen blankets for oxygen-sensitive formulations. Shelf life ranges from 6–24 months, depending on chemical stability. Spills should be contained with absorbent materials like vermiculite, not washed into drains due to potential environmental persistence.
B2B Procurement Guide
Procurement professionals should prioritize technical specifications over price alone. Critical parameters include penetration depth (ASTM C642 test), water repellency efficiency (EN 16581), and compatibility with secondary coatings. Request certified test reports for chemical resistance relevant to the project environment (e.g., sulfate-rich soils). Supplier evaluation should assess batch consistency, technical support (e.g., on-site application guidance), and emergency supply capabilities. Bulk purchases (200+ liters) typically offer 15–30% cost savings. Consider regional climate adaptations—cold-weather formulations may require antifreeze additives. MOQs vary from 20-liter drums to IBC totes (1,000 liters), with lead times of 2–6 weeks for specialty formulations.
Related Manufacturers
- 主营：[]
- 主营：[]
- 主营：[]
- 主营：水性防锈漆、防腐防锈水性漆、彩钢瓦翻新防锈漆、铁锈转化剂、隔音吸音材料、吸音阻燃涂料、外墙保温涂料、桥面防水、路桥防水、背水面防水、背水面补漏、外露型防水、红橡胶防水
- 主营：沥青砂浆、铁屑砂浆、防油渗胶泥、无机铝盐防水剂、防水涂料、环氧沥青防腐漆、无机铝盐防水砂浆、环氧树脂胶泥、防油渗砂浆、金属防静电不发火耐磨材料、氯丁胶乳、硫磺砂浆
- 主营：抗裂砂浆、高强无收缩灌浆料、耐酸碱防腐砂浆、混凝土外加剂、修补砂浆水下不分散絮凝剂、混凝土表面增强剂、混凝土防水剂、混凝土增强剂、混凝土速凝剂、防水剂、自愈型无机渗透防水剂、防腐阻锈剂、长效脱模剂、透水混凝土增强剂、鹅卵石、防水涂料、防腐涂料、桥梁支座灌浆料、耐酸碱耐腐蚀砂浆、瓷砖胶、水泥自流平砂浆、水泥基渗透结晶母料、修补料、高延性混凝土、环氧树脂修补砂浆
- 主营：多聚甲醛、环己胺、正硅酸乙酯28 40、抗渗剂、正十二烷、异丙醇、无水乙醇、铬酸酐、亚氯酸钠、二甲基甲酰胺、硫酸羟胺、戊二酸二甲酯、邻苯二甲酸二乙酯、二甲苯、二氯甲烷、环己烷、四氯乙烯、环己酮、环氧氯丙烷、甲醇、甲酸、乙腈、苯酚、乙二醇乙醚醋酸酯、醋酸丁酯
- 主营：菱镁改性剂、水泥增强剂、石膏发泡剂、石膏增强剂、建筑防水剂、水性脱模剂、水泥发泡剂、石膏防水剂、石膏脱模剂、硫镁改性剂、水泥防水剂、水泥脱模剂
- 主营：防水剂、脱模剂、隔离剂、增强剂、发泡剂、补强剂、抗渗保护剂、水泥添加剂、菱镁延缓剂、建筑发泡剂、石膏增强剂、有机硅防水剂、水性脱模剂、菱镁改性剂、硫镁改性剂、水泥增强剂、憎水剂、缓凝剂、促凝剂、水解树脂增强剂、水泥发泡剂、消泡剂、泡沫剂
- 主营：动物发泡剂、植物发泡剂、高分子发泡剂、复合型发泡剂、蛋白发泡剂、石膏增强剂、水泥增强剂、增韧剂、抗裂剂、流平剂、有机硅防水剂、砂浆憎水剂、岩棉防水剂、水性脱模剂、隔离剂、拆模剂、菱镁改性剂、硫镁改性剂、抗卤剂、后处理剂、缓凝剂、促凝剂、消泡剂、早强剂
- 主营：防腐防水补漏涂料、反辐射隔热防水涂料、水泥基渗透结晶防水涂料、抗渗剂、新型隔音涂料、新型吸音涂料、水性纳米中空玻璃微珠保温隔热涂料、保温找平凝胶、各种路桥隧道防水涂料、聚氨酯沥青防水涂料、环氧防腐漆
- 主营：沥青砂浆、环氧沥青、沥青胶泥、防水剂、憎水剂、沥青油膏、防水涂料、聚合物防水、透明防水胶、聚氨酯防腐、聚氨酯防水、盐防水砂浆、防油渗胶泥、胶乳水泥砂浆、渗透结晶防水
- 主营：聚丙二醇、聚山梨酯、酚醚磷酸酯、渗透剂、加脂剂、乳化剂、抗静电剂、工业清洗剂、乳化润滑剂、表面活性剂、消泡剂、净洗剂、匀染剂、异构十醇醚、山梨醇脂肪酸酯、司盘、吐温、聚乙二醇、聚丙二醇 PPG、脂肪酸酯、磷酸酯、辛基酚聚氧乙烯醚、聚醚
- 主营：虫胶片、蒙脱石、石灰氮、稀释剂、脱漆剂、脱霉剂、漂白剂、粘合剂、除锈剂、清洗剂、环保溶剂、活性染料、二氯丙烷、二氯甲烷、土壤杀菌、氟硅酸钠、酚醛树脂、硝酸铁、氯化钡、硫酸氢钠、甲酸、三氯化铝、二氯乙烷、二氯异氰尿酸钠、固体次氯酸钠
- 主营：粘钢胶、聚合物砂浆、灌浆料、起砂处理剂、界面剂、修补料、环氧树脂砂浆、环氧树脂胶泥、植筋胶、碳布胶、裂缝空鼓胶、修补砂浆、加固砂浆、防水砂浆、防腐砂浆、环氧树脂结构胶、防碳化涂料、水泥基渗透结晶、108胶粉、道路抢修料
- 主营：十二烷基苯磺酸钠、重烷基苯磺酸钠、三乙醇胺油酸皂、表面活性剂、乳化剂、有机硅消泡剂、松香引气剂、三乙醇胺硼酸酯、甲基硅酸钠、甲基硅酸钾、二乙烯三胺五乙酸五钠、乙氧基化烷基硫酸钠、纳米碳酸钙、聚乙二醇硼酸酯、油酸钾、二苯醚二磺酸钠、十二烷基硫酸钠、聚氯乙烯、AES、二乙烯三胺五乙酸、α-烯基磺酸钠
- 主营：硫铝酸盐水泥、铝酸盐水泥、高铝水泥、堵漏剂、速凝剂、锚固剂、树脂锚固剂、速凝剂母料、液体速凝剂、灌浆料、高铝浇注料、耐火水泥、堵漏王、道路修补料、耐酸水泥、水玻璃、注浆料、高水注浆料、耐火浇注料、快硬硫铝酸盐水泥、低碱度硫铝酸盐水泥、52.5硫铝酸盐水泥、环氧树脂砂浆、耐酸胶泥、超细水泥
- 主营：矿用挖掘机、矿用清仓机、矿用扒渣机、防水剂、给煤机、无压风门、防水密闭门、气动隔膜泵、滚轮罐耳、皮带综保、矿用锂离子蓄电池电源、矿用翻车机、小型挖掘机、洒水降尘装置、司控道岔装置、空气炮、气动阻车器、气动卧闸、断带抓捕器、矿用防爆摄像仪、跑车防护装置、压风供水自救装置、履带运输车、巷道修复机、矿用挖掘式装载机