Overview
Silicon dioxide particles, commonly referred to as silica particles, are a versatile material with applications across multiple industries. They are known for their high purity, thermal stability, and chemical inertness, making them suitable for demanding environments. These particles are typically produced through processes like precipitation or fumed silica methods, resulting in varying particle sizes and surface areas. Silica particles are widely used in electronics, where they serve as fillers or insulating materials. Their ability to enhance mechanical properties and thermal resistance makes them valuable in coatings, adhesives, and composites. In the pharmaceutical industry, they are used as excipients or flow aids in tablet formulations.
Physical and Chemical Properties
Silicon dioxide particles exhibit a high melting point of approximately 1,600°C and a boiling point around 2,230°C, making them suitable for high-temperature applications. Their density ranges from 2.2 to 2.6 g/cm³, and they are insoluble in water but soluble in hydrofluoric acid. The particles are chemically inert, resisting reactions with most acids and alkalis. The surface area of silica particles can vary significantly depending on the production method. Fumed silica, for example, has a high surface area, which enhances its performance as a thickening agent or adsorbent. The particle size distribution is another critical parameter, influencing properties like flowability and optical clarity in end-use applications.
Main Applications
In the electronics industry, silicon dioxide particles are used as dielectric materials in semiconductors and as fillers in epoxy resins to improve thermal conductivity. Their high purity ensures minimal contamination in sensitive electronic components. In coatings, they enhance scratch resistance, durability, and UV protection. The pharmaceutical and cosmetic industries utilize silica particles as anti-caking agents, carriers for active ingredients, and viscosity modifiers. In food applications, they are approved as anti-caking agents (E551). Their biocompatibility and inertness make them suitable for medical devices and drug delivery systems.
Safety and Storage
Silicon dioxide particles are generally considered safe but require proper handling to avoid dust inhalation, which can cause respiratory irritation. Workers should use protective equipment such as masks and gloves. The particles should be stored in a dry, cool environment to prevent moisture absorption, which can affect their performance. In case of accidental exposure, rinse affected areas with water and seek medical advice if irritation persists. Spills should be cleaned up promptly to prevent dust dispersion. Proper ventilation is recommended in areas where silica particles are handled or processed.
B2B Procurement Guide
When procuring silicon dioxide particles, buyers should prioritize suppliers with certifications like ISO 9001 or USP/EP compliance for pharmaceutical-grade materials. Key specifications to verify include purity (typically 99% or higher), particle size distribution, and surface area. Customized particle sizes or surface treatments may be available for specialized applications. Prices vary based on purity, particle size, and order volume, with typical ranges of $10-$50/kg. Bulk purchases may qualify for discounts. It's advisable to request samples for testing before large-scale procurement. Reliable suppliers often provide technical support and documentation, such as material safety data sheets (MSDS) and certificates of analysis (CoA).
Related Manufacturers
- 主营：氧化铝、镍铁粉、钨铁粉、二氧化硅、白铅粉、氧化硼、锰铁粉、硅铁粉、二氧化锆、氧化钛粉、球形磁粉、雾化铜粉、钒铁粉末、氧化铋粉、钛铁合金、三氧化钼、氧化镁粉、三氧化二、氧化钴粉、耐火材料、二硫化钨、氧化铬绿、纳米氧化钛、纳米氧化锌、球形磁铁粉、四氧化三铁
- 主营：隔热粉、氧化铝粉、隔热浆料、二氧化硅、超细磁粉、磁性液体、纳米磁粉、电池材料、合金材料、电子涂层、纳米银粉、涂料油漆粉、透明氧化铝、水性分散液、纳米氧化镧、氧化锆陶瓷、纳米氧化铁、纳米氧化铝、纳米氢氧化铝、纳米氧化镁、纳米氧化锌
- 主营：金纳米、三角片、麦芽糖、纳米粒子、羟丙基、ito薄膜、氮化钛、tio2纳米、碳粉tio2、修饰tio2、pd纳米笼、水溶伊红、纳米复合、磁性纳米、蛋白芯片、包硅金银、硅纳米线、包硅纳米、硅纳米管、螯合树脂、油溶性银、复合材料、薄膜定制
- 主营：金纳米颗粒、银纳米颗粒、纳米银粉、金纳米粒子、二氧化硅微球、纳米铂粉、金纳米棒、磁性微球、磁性纳米颗粒、聚苯乙烯微球、荧光微球、纳米铂金溶液、聚乳酸微球、纳米磁珠、聚丙烯微球、聚乙烯微球、纳米金溶液、羧基磁珠、氨基磁珠、海藻酸钠微球、聚氯乙烯微球、pmma微球
- 主营：生物素修饰蛋白、fitc标记蛋白、聚苯乙烯微球、介孔二氧化硅微球、pvc微球、嵌段共聚物、生物素标记、荧光标记、纳米颗粒、核苷糖、aie、复合微球、功能化载玻片、荧光染料、金属配合物、Mxene、磁性纳米颗粒、小分子PEG、聚合物、纳米金、聚合物微球、荧光微球、荧光探针、点击化学、小分子
- 主营：聚苯乙烯微球、纳米磁珠、荧光微球、二氧化硅微球、磁性纳米粒子、金纳米粒子、金纳米颗粒、银纳米颗粒、纳米银粉、纳米铂金溶液、聚丙烯微球、聚乙烯微球、纳米银线、银纳米线、海藻酸钠微球、量子点微球、量子点荧光微球、磁性荧光微球、聚氯乙烯微球、聚乳酸微球、聚四氟乙烯微球、纳米金溶液
- 主营：氨基二氧化硅微球、红色荧光微球、核酸提取磁珠、红色羧基微球
- 主营：双盐酸肼、单盐酸肼、5-二甲基海因、水溶羊毛脂、三硫代碳酸钠、福美钠、苯并咪唑、纤维醋法酯
- 主营：regal330r、c104eplus、s-lecbm-s、哑光粉、s-lecbh-6、纤维素、972德国、t40亲水、高色素、s-lecks-5、聚氨酯、s-lecbl-1、s-lecbl-2、汽车漆、白炭黑、树脂b723、tinuvin770、cab-381-20、树脂ks-3、nm60抛光、r202赢创、hiblack50l、cab-381-0.5、l2醛树脂、ts610ts-610
- 主营：阻燃剂、醛树脂、胶黏剂、共聚物、黄色粉、聚合物、哑光粉、填缝剂、乳胶漆、纤维素、防锈剂、白碳黑、化妆品、木器漆、沉淀法、乳胶粉、催化剂、杀真剂、固化剂、弹性体、扩散粉、eva树脂、聚丙烯、消泡剂、消光粉
- 主营：聚乙二醇PEG衍生物、嵌段聚合物、纳米材料、上转换纳米粒子、二氧化硅、荧光染料、金纳米粒、银纳米粒、聚苯乙烯、四氧化三铁
- 主营：活性脂、三苯胺、mof材料、二氧化硅定制、聚乙二醇、海藻酸钠、聚苯乙烯、蛋白交联剂、琥珀酰亚胺酯、月桂酸甘油酯、二元醛基cof单体
- 主营：嵌段共聚物、合成磷脂、荧光染料、PEG、点击化学、量子点
- 主营：石墨粉、陶瓷球、氧化铁红、氧化铁黑、电气石、无机颜料、纳米微孔载体球、石粉、热敷加热珠