Overview
Phase Change Materials (PCMs) are substances that store and release thermal energy during phase transitions, typically between solid and liquid states. They are engineered to absorb large amounts of heat at a constant temperature, making them ideal for thermal management applications. PCMs are classified into organic (e.g., paraffin), inorganic (e.g., salt hydrates), and bio-based types, each with distinct advantages. Their ability to maintain stable temperatures has revolutionized industries like construction, where they reduce HVAC loads, and textiles, where they regulate body temperature. Advances in microencapsulation have further expanded their use in electronics and transportation.
Physical and Chemical Properties
PCMs exhibit high latent heat capacity, often ranging from 100–300 kJ/kg, enabling efficient energy storage in compact volumes. Their melting points are tunable; for instance, paraffin-based PCMs melt at 20–60°C, while salt hydrates operate at higher temperatures. Thermal conductivity varies widely, with additives like graphite often used to enhance heat transfer. Chemical stability is critical, especially for inorganic PCMs prone to phase separation or supercooling. Organic PCMs are chemically inert and non-corrosive but may have lower thermal conductivity. Compatibility with containment materials (e.g., plastics, metals) must be verified to prevent leaks or degradation.
Main Applications
In construction, PCMs are integrated into walls, ceilings, and floors to stabilize indoor temperatures, reducing energy consumption by up to 30%. They are also embedded in drywall or gypsum boards for passive cooling. The textile industry uses microencapsulated PCMs in sportswear and bedding to enhance comfort. Electronics rely on PCMs for thermal buffering in devices like smartphones and batteries, preventing overheating. Solar energy systems employ high-temperature PCMs (e.g., molten salts) to store excess heat for later use, improving grid stability and renewable energy utilization.
Safety and Storage
Most commercial PCMs are non-toxic and environmentally benign, but flammability can be a concern for organic types like paraffin. Fire-retardant additives or encapsulation mitigate risks. Inorganic PCMs may require corrosion-resistant containers due to their reactivity with metals. Storage should avoid prolonged exposure to temperatures beyond their phase transition range to prevent premature degradation. Sealed packaging is essential to prevent moisture absorption, which can alter performance in salt hydrates. Transport regulations vary by material; some may require hazard labeling.
B2B Procurement Guide
When sourcing PCMs, define the target melting temperature (±2°C) and latent heat capacity. For building materials, ensure compatibility with local climate conditions. Request technical datasheets detailing cycling stability (e.g., 1,000+ cycles without degradation) and thermal conductivity enhancements. Suppliers should provide certifications like REACH or ISO 9001. Bulk pricing is often negotiable for orders exceeding 1 ton. Consider logistics: some PCMs require temperature-controlled transport. Samples for pilot testing are recommended to verify performance in real-world conditions.
Related Manufacturers
- 主营：灾区电话、矿用救护、煤矿用钻机、井下快速制相变材料、旧枕木、氧气呼吸器、氧气充填泵、井下自动隔爆装置 ZGJFH35型、ZDY1200S全液压坑道钻机、泥浆泵、注浆泵、快速密闭罐、矿用风机、CCZ-1000粉尘检测仪、氢氧化钙(二氧化碳吸收剂)、一氧化碳吸收剂、干燥剂、CD5多参数气体检测仪、空气呼吸器、气幕喷淋装置、矿用门、避难硐室门、矿用密闭门、防火门、车载甲烷断电仪
- 主营：液压钻机、乳化液泵、多参数测定器、硐室制冷相变材料、高倍数灭火装置、单轨吊、隔爆装置、通风多参数检测仪、氧气充填泵、矿用风筒、避难硐室门、无压风门、防水密闭门、洒水降尘装置、高倍数泡沫药剂、供水自救装置、耙矿绞车、氢氧化钙分析化验设备、粉尘测量仪、风机、三用阀、翻车机、阻化剂、避难硐室座椅
- 主营：内外墙保温隔热涂料、隔音减震吸音涂料、纳米渗透结晶防水剂、隔音吸音材料、相变声能凝胶、无机硅声能凝胶、纳米中空保温隔热涂料、H2保温凝胶、保温找平凝胶
- 主营：水泥基、反辐射隔热、结晶防腐防水、rft自控相变保温材料、渗透结晶防水
- 主营：水性防锈漆、防腐防锈水性漆、铁锈转化剂、隔音吸音材料、彩钢瓦翻新防锈漆、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：聚乙烯微粉、聚丙烯蜡粉、酰胺蜡粉、相变蜡、相变材料、高焓值相变材料、乳化石蜡、石蜡乳液、聚乙烯蜡乳液、聚丙烯蜡乳液、艺术手蜡、巴西棕榈蜡乳液、费托蜡乳液、塑料润滑剂、果冻蜡、感温蜡
- 主营：隔热涂料、防水涂料、反辐射隔热漆、相变真空陶瓷保温、污水池防腐涂料、隔音吸音涂料、路桥防水、防水剂、保温隔热涂料
- 主营：防腐涂料、保温涂料、防水涂料、防水卷材、无机硅声能凝胶、路桥防水涂料、金属防锈漆、隔热涂料、吸音涂料、补漏王、瓷砖胶、聚氨酯、隔音涂料
- 主营：工业级白油、食品级白油、食品酒精、无水乙醇、白凡士林、三乙醇胺、溶剂油、P507萃取剂、二甲基丙烯酰胺、正十二烷、8-羟基喹啉、阻聚剂701、聚乙二醇、三乙二醇、桐油、1227杀菌剂、乙醇钠、乙酸乙酯、二甲苯
- 主营：皮带硫化机、胶带修补器、二氧化碳吸收剂氢氧化钙、煤矿相变降温材料、一氧化碳吸收剂
- 主营：导热垫片、导热硅胶、散热产品、导热材料、导电材料、电磁屏蔽材料、导电硅橡胶、导热胶带、导电泡棉、散热片、散热硅胶
- 主营：合金靶材、陶瓷靶材、金属靶材、相变合金靶材、高纯合金靶材、铜靶材、银靶材、铝靶材、锂靶材、单质金属靶、高纯银靶材、镍铜合金靶材、溅射靶、铬靶材、锆靶材、氧化铟镓锌靶材、铱靶材、铂靶材、硫酸钠靶材、二氧化硅靶材、氧化镁靶材、钛铌合金靶材、钼钽合金靶材、碲化锑靶材
- 主营：切削液、改善油、热硅脂、导热相变材料、触点改、导热硅、测漏剂、一电子、除焊条、导热膏、三防胶、润滑油、三防漆、散热膏、标记液、擦拭布、润滑剂、清洗剂、去除剂、遮蔽剂、粘合剂、浓缩液、散热剂、润滑脂、聚氨酯、稀释剂
- 主营：煤矿氧气呼吸器、全液压坑道钻机、直读式粉尘测定仪、矿用相变材料、矿用乳化液泵配件、矿用钻机配件、煤矿消防救护、氧气测定器、灾区电话、氢氧化钙、二氧化碳吸收剂、煤矿绞车、煤矿注浆泵、矿用孔板流量计、轨道道口板、自动苏生器、空气呼吸器、氧气充填泵、消防破拆工具、道口板、消防救护器材、煤矿井下用自动隔爆装置、泄露通讯装置、抱索器
- 主营：杜仲素、对位酯、丙烯酸酯、二氧化硫脲、乙基麦芽酚、饲料添加剂、油酸基硬脂酸、二苯基硅二醇
- 主营：氧化铬绿