Overview
Glass flake is a high-performance additive material composed of thin, flat glass particles with a lamellar structure. Developed initially for military applications in the 1950s, it has become critical in industrial anti-corrosion solutions due to its unique ability to create tortuous diffusion paths in coatings. The material is manufactured by melting special glass compositions (typically alkali-free borosilicate) followed by rapid cooling and mechanical milling to achieve controlled flake geometries. Unlike spherical fillers, the planar structure of glass flakes provides exceptional barrier properties at lower loading levels.
Physical and Chemical Properties
Glass flakes exhibit remarkable chemical stability, withstanding pH ranges from 2-12 and temperatures up to 300°C in continuous service. Their thermal expansion coefficient (5.0×10⁻⁶/°C) closely matches that of steel, minimizing stress in metal coatings. The material's impermeability stems from its high aspect ratio (surface area to thickness), with oxygen transmission rates reduced by 90% compared to unfilled coatings at 15-20% volume loading. UV stability is exceptional due to the inorganic nature, with less than 0.5% degradation after 5,000 hours of QUV exposure testing.
Main Applications
Over 70% of glass flake production is consumed by the protective coatings industry, particularly for chemical storage tanks, offshore platforms, and pipeline internals. In epoxy-based systems, 20-30% flake loading can extend service life from 5 to 25+ years in harsh environments. Advanced composites represent a growing market, where flakes improve dimensional stability in thermoplastic components while reducing weight. Specialty applications include conductive coatings (when silver-coated), architectural finishes for light diffusion, and high-temperature gasketing materials in automotive applications.
Safety and Storage
While chemically inert, glass flakes require careful handling due to their physical form. Bulk material should be stored in original moisture-proof packaging with desiccants, as humidity can affect dispersion properties in coating formulations. Workplace exposure limits follow general particulate matter guidelines (typically 10mg/m³ for total dust). Engineering controls like local exhaust ventilation are recommended during large-scale mixing operations. Spills should be cleaned with HEPA-filtered vacuums rather than brooms to minimize airborne particles.
B2B Procurement Guide
Industrial buyers should prioritize suppliers that provide material characterization reports including laser diffraction particle size analysis (D50 values typically 30-150μm) and electron microscopy images confirming flake integrity. Surface treatments (silane coupling agents) significantly impact performance in different resin systems. Bulk shipments (500kg+ totes) offer 15-30% cost savings versus bagged quantities. Just-in-time purchasing is advisable as some surface treatments degrade over 6-12 months storage. Leading manufacturers include Nippon Sheet Glass, Glassflake Ltd, and specialized Chinese producers for cost-sensitive applications.
Related Manufacturers
- 主营：玻璃鳞片、高岭土、玻璃粉、膨润土、滑石粉、铝矾土、硅灰、萤石粉、沉淀硫酸钡、重钙、轻钙、硅藻土、珍珠岩、玻璃微珠、重晶石粉、S95矿粉、透明粉、煅烧高岭土、玻璃砂、云母粉、木炭、硅酸铝粉、长石粉、火山石、贝壳粉
- 主营：POM塑胶原料、PA66塑胶原料、PA6塑胶原料、玻纤加玻璃磷片增强、PA12塑胶原料、LCP塑胶原料、PPO塑胶原料、ABS塑胶原料、PC塑胶原料、PVA降解塑料、TPEE塑胶原料、TPU塑胶原料
- 主营：聚氯乙烯萤丹涂料、氟碳漆、防腐涂料、环氧玻璃磷片、环氧富锌底漆、919防腐涂料、聚硅氧烷面漆、氯化橡胶面漆、瓷化墙膜、901瓷釉涂料、氯磺化聚乙烯防腐漆、高氯化聚乙烯防腐漆、环氧煤沥青防腐漆、无机涂料、高温漆、无机富锌底漆、聚氨酯面漆、om烟囱防腐涂料、036耐油涂料、反光漆、隧道瓷化涂料、环氧涂料、环氧云铁中间漆、防腐漆、涂料、环氧玻璃鳞片涂料
- 主营：PC、TPU、PA6、PA66、LPC、POM
- 主营：烟囱、压力容器、料仓、储罐、发酵罐、换热器
- 主营：佐敦油漆、海虹老人油漆、工程机械塑粉、玻璃磷片聚氨漆、环氧富锌底漆、环氧云铁中间漆、防火涂料、钢结构油漆、丙烯酸聚氨酯面漆、氟碳漆、淮海牌油漆
- 主营：玻璃鳞片胶泥、玻璃鳞片涂料、环氧树脂防腐涂料、乙烯基玻璃磷片胶泥、901乙烯基树脂、191树脂、196树脂、3301树脂、树脂907、环氧树脂、丙烯酸聚氨酯面漆、彩钢瓦翻新漆、氟碳漆、环氧沥青漆、环氧云铁中间漆、环氧富锌漆、水性漆、灌浆液、环保漆、防锈漆、防腐漆、注浆液、聚氨酯注浆液、防腐工程施工、彩钢房翻新施工、玻璃钢防腐施工
- 主营：奇美ABS塑胶原料、TPV耐高温密封原料、台湾台化ABS高刚性、玻纤加玻璃磷片增强、尼龙PA66加纤塑料、热塑性弹性体TPU、日本东丽PPS耐高温、美国杜邦PA66尼龙、韩国锦湖ABS通用级、日本宝理POM赛钢、SarlinkTPV、可降解塑料PLA、沙伯基础PC聚碳酸酯、韩国SKPP聚丙烯、陶氏POE增韧级、韩国LGABS耐高温、奇美HIPS高抗冲、SABIC PC高透、TPV热塑性硫化橡胶、美国陶氏EAA热熔胶、POM聚甲醛塑料、乐天化学EVA热熔级、薄膜TPU塑料、齿轮POM塑料、美国杜邦EMA高柔韧、埃克森LLDPE薄膜
- 主营：塑胶原料
- 主营：水性工业漆、彩钢翻新漆、玻璃鳞片胶泥、丙烯酸面漆、环氧富锌底漆、环氧云铁中间漆、氰凝防水防腐涂料、氟碳漆、乙烯基树脂、环氧树脂、无溶剂环氧树脂、脱漆剂、醇酸调和漆、固锈剂、铁锈转化剂、防水自粘卷材、彩钢自粘卷材、玻璃鳞片涂料、云铁漆、云铁中间漆
- 主营：陶瓷涂层、防腐涂层、耐磨材料、玻璃磷片胶泥、防腐涂料、耐磨涂层、陶瓷涂料、耐磨钢板
- 主营：重防腐涂料、氟碳漆、特种涂料、水性环氧玻璃磷片漆、丙烯酸聚氨酯涂料、脂肪族聚氨酯涂料、聚氨酯面漆、氯化橡胶漆、氯磺化聚乙烯漆、环氧富锌底漆、环氧铁红底漆、水性聚氨酯涂料、水性丙烯酸漆
- 主营：TPU、PC、LCP、玻纤加玻璃磷片增强、PA6、ABS、PEEK、TPEE、PTFE、EVA、POM、PET、PMMA、PA66、PA12、PBT、COC、PPS、TPE、美国杜邦、德国科思创、沙伯基础、德国巴斯夫、日本宝理、美国苏威、工程料特种塑胶原料
- 主营：聚酮pok、热熔胶、共聚物、玻纤加玻璃磷片增强、电池盒、锂电池、燃油管、玻璃珠、波形板、护目镜、运动鞋、无填充、投影仪、lcd面板、滴定板、透气膜、比色皿、弹性体、屏幕包、柔性件、连接器、电容器、m331ag3ba、密封件、聚氨酯、低摩擦
- 主营：通用塑料、工程塑料、特种塑料、玻纤加玻璃磷片增强、POM、PA66、PC、PC/ABS、LCP、PEI、热塑弹性体、PEEK、PBT、德国巴斯夫、美国杜邦、德国科思创、美国塞拉尼斯、日本宝理、沙伯基础、PA6、ABS、TPE、TPU、PPS、日本旭化成、日本可乐丽