Overview
Polyester white powder coating is a solvent-free, thermosetting finish applied through electrostatic spray deposition and cured under heat. Composed of polyester resins, crosslinkers (e.g., TGIC or HAA), pigments, and additives, it forms a durable, decorative layer on metal substrates. The white variant is particularly popular for its clean appearance and high reflectivity, making it ideal for architectural and consumer-facing applications. As an environmentally friendly alternative to liquid paints, it emits negligible VOCs and allows near 100% material reuse through overspray recovery. Its formulation can be adjusted for matte, semi-gloss, or high-gloss finishes, with optional textures like wrinkled or hammered effects.
Physical and Chemical Properties
The coating exhibits a glass transition temperature (Tg) of 50-60°C, preventing clumping during storage. Upon curing at 160-200°C, it crosslinks into a dense network with a pencil hardness of 2H-3H and impact resistance exceeding 50 kg·cm. Its whiteness is maintained by UV-stable titanium dioxide pigments, with typical L* values >90 on the CIELAB scale. Chemically, cured polyester coatings resist dilute acids, alkalis, and solvents like ethanol. They achieve 1,000+ hours in salt spray tests (ASTM B117) and 5+ years of outdoor durability without significant chalking or yellowing. Particle size distribution (typically 30-50μm) ensures optimal fluidization and transfer efficiency during application.
Main Applications
Architectural uses dominate the market, including aluminum window frames, curtain walls, and balcony railings, where its weather resistance meets AAMA 2604/2605 standards. In automotive, it coats alloy wheels, bumpers, and under-hood components due to heat tolerance up to 120°C. Consumer appliances like refrigerators, washing machines, and HVAC units utilize its scratch-resistant properties and food-contact compliance (FDA 21 CFR). Industrial applications extend to agricultural machinery, electrical enclosures, and outdoor furniture, often specified with additional anti-graffiti or antimicrobial additives.
Safety and Storage
While non-toxic when cured, uncured powder requires handling precautions. Use NIOSH-approved N95 masks during spraying to prevent respiratory irritation. Static discharge risks necessitate grounded equipment in application areas. Storage life is typically 12 months in original sealed containers at <30°C and <70% RH. Condensation exposure causes clumping; precondition at 25°C for 24 hours before use if stored in cold environments. Dispose of waste according to local regulations, as incineration may release trace VOCs from additives.
B2B Procurement Guide
Key specifications to request include: crosslinker type (TGIC-free for EU compliance), gloss range (e.g., 60±10 units at 60°), film thickness tolerance (usually 60-80μm), and accelerated weathering test results (QUV-A or Xenon-arc). For large orders, negotiate bulk pricing tiers (e.g., >5 tons) and verify supplier QC processes like batch-to-batch color consistency (ΔE<0.5). Consider regional suppliers to minimize logistics costs, as shipping may account for 10-15% of total expenditure. Sample testing should evaluate cure schedule compatibility with existing ovens.
Related Manufacturers
- 主营：彩色粉末塑粉、丙烯酸树脂粉末漆、新型固体塑粉、粉末涂料、环氧粉末涂料、环氧聚酯粉末涂料、聚酯粉末涂料、热固型粉末涂料、耐湿热粉末涂料、无光粉末涂料、环氧聚酯固化粉末涂料、丙烯酸树脂粉末涂料、丙烯酸粉末涂料、高光丙烯酸粉末涂料、金属粉末涂料、锤纹粉末涂料、环氧聚酯粉末漆、防火聚酯粉末涂料、户外聚酯粉末涂料、聚酯防腐粉末涂料、氟碳粉末涂料、热塑性粉末涂料、尼龙粉末涂料、静电喷涂塑粉
- 主营：聚酯催化剂、锡酸钠、锡酸钾、草酸亚锡
- 主营：油漆、塑粉、外墙漆、粉末涂料、地坪漆
- 主营：内外墙、大理石、仿砖漆、纯聚酯型粉末涂料、乳胶漆、花岗岩、多彩漆、黑底漆、搅拌罐、石材漆、岩片漆、石头漆、建筑漆、属于您、涂料oem、水包沙、石漆oem、漆设备、质感漆、抗碱封、水性漆、外墙漆、耐酸碱、彩石漆、挤塑板、罩面漆
- 主营：粉末涂料、聚塞氯铵、硅烷偶联剂
- 主营：防水sbs、玻纤瓦、tpz防水、聚酯复合、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、反应粘结
- 主营：奇疏110、液态聚硫橡胶、脱普32清洗剂、辛基羟肟酸、拜耳3900固化剂、ipda、间苯二甲铵、ipdi、异山梨醇二甲醚、安息香乙醚、六甲基二硅氮烷
- 主营：环保阻燃剂、陶瓷化耐烧蚀剂、成炭剂、三氧化二锑替代
- 主营：粘接剂、树脂粉、abs韩国、pvc塑胶、纯圆棒、pok韩国、asa韩国、加铁氟龙、ppa长碳纤、abs合金料、纤导电pom、pa6长碳纤、长纤塑料、紫外线pok、塑料颗粒、分子pe粉末、韩国lg塑料、加石墨填充、食品级树脂、灰黑色塑料、导电防静电、防静电塑料、酰亚胺棒材、聚酰亚胺树脂、抗紫外线塑胶
- 主营：澄清剂、抛光粉、催化剂、纯聚酯固化剂、丙三醇、手感剂、成核剂、氧化铝、石墨粉、脱模剂、半导体、清洗剂、粘合剂、紫胶片、硅油、硅胶、硅藻土、光扩散剂、硅乳液、有机硅微球、氟化液、阻燃剂
- 主营：油毡瓦、沥青瓦、玻纤瓦、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：4-D钠盐、N-甲基硫脲、N-甲基吡咯烷酮、单辛酸甘油酯、N-甲基邻氨基苯甲酸甲酯、三硫代碳酸钠、辛酸镁盐、菜籽油甲酯、8-辛二醇、羟丙基纤维素、硫酸烟酰苯胺、离子液体、咪唑、表面活性剂、光引发剂、紫外线吸收剂、UV单体
- 主营：玻纤瓦、材料sbs、乙烯pvc、951防水、防水ppc、沥青胶、油毡瓦、eva防水、sbs防水、池石上、k11防水、pvc防水、沥青瓦、卷材sbs、hdpe防水、卷材1卷、rg聚合物、聚氯乙烯、平板透明、水卷卷材、卷材企标、包工包料、防水涂料、木屋瓦片、塑料薄膜
- 主营：美术粉末、防火阻燃塑粉、环氧树脂涂料、粉末涂料、家具防护粉末涂料、彩色绝缘粉末、铸铝专用塑粉、静电磨砂喷塑粉、耐候性粉末、防腐粉末