Overview
High-temperature PBT is a semi-crystalline engineering thermoplastic derived from polybutylene terephthalate, modified to withstand prolonged exposure to heat without significant degradation. It combines the inherent properties of standard PBT—such as dimensional stability and electrical insulation—with enhanced thermal resistance, making it ideal for demanding environments. Initially developed for automotive and electrical applications, high-temperature PBT has expanded into aerospace and industrial sectors due to its reliability under stress. Its polymer structure incorporates stabilizers and reinforcing fillers (e.g., glass fibers) to improve performance at temperatures exceeding 150°C.
Physical and Chemical Properties
High-temperature PBT exhibits a melting point range of 220–230°C, with a heat deflection temperature (HDT) of up to 210°C under load (for glass-filled grades). Its low moisture absorption (0.1–0.3%) ensures minimal dimensional changes in humid conditions, critical for precision components. The material resists acids, oils, and hydrocarbons but may degrade under strong bases or prolonged UV exposure unless additives are included. Its tensile strength ranges from 50–120 MPa, depending on filler content, while maintaining excellent dielectric properties.
Main Applications
In automotive systems, high-temperature PBT is used for sensor housings, ignition components, and under-the-hood connectors due to its ability to endure thermal cycling. Electrical applications include circuit breakers, relay housings, and LED mounts, where flame retardancy (UL94 V-0 ratings) is often required. Industrial uses encompass pump impellers, gear wheels, and conveyor system parts, leveraging its wear resistance. Recent innovations include 3D printing filaments for functional prototypes requiring heat resistance.
Safety and Storage
PBT is generally safe to handle but may release trace fumes during injection molding or machining. Adequate ventilation and PPE (e.g., dust masks) are recommended during processing. Storage in moisture-proof containers is essential to prevent hydrolysis, which can degrade molecular weight. Disposal should follow local regulations for plastics; recycling codes may vary by formulation. Suppliers typically provide Material Safety Data Sheets (MSDS) with specific handling guidelines.
B2B Procurement Guide
When sourcing high-temperature PBT, specify parameters such as heat deflection temperature, filler type (e.g., 30% glass fiber), and regulatory certifications. Bulk purchases (palletized or truckload quantities) often reduce costs by 10–20%. Verify supplier testing reports for thermal aging performance and batch consistency. Leading manufacturers include BASF, DuPont, and Celanese, with regional distributors offering tailored logistics support. Sample testing is advised to confirm compatibility with end-use conditions.
Related Manufacturers
- 主营：塑胶原料
- 主营：PC、ABS、防火ABS、耐高温材料、防火阻燃PC、PC防火阻燃V0抗UV、PA66、POM、PBT、PP、PC/ABS、TPU、PBT 加纤防火、PA66 加纤防火、PA66 加纤
- 主营：PP、PC、PA6/66
- 主营：美国杜邦pom、宝理pom、巴斯夫pom、台塑pom、韩国可隆pom、旭化成pom、云天化pom、泰科纳pom、日本三菱pom、韩国工程pom、pom100p、pom500p、pom900p、m90-44、F20-03、pom聚甲醛、pom赛钢、朗盛pa66、旭化成pa66、日本东丽pa66、美国杜邦pa66、巴斯夫pa66
- 主营：tpu、Eva、Pom、Pa66、Lcp、Pa6t、Pa9t、Pa6、Poe、Hdpe、Ldpe、Lldpe、Pc、Hips、Pbt、Pctg、Pc/abs、Abs、pp、Ppsu、Pps、Para、Tpee、Pa612、Pa12
- 主营：POM、PA66、PC、Pom100p、Pom500p、Pom900p、Pom100t、M90-44、F20-03、ABS747、abs757、TPU、美国杜邦pom、日本旭化成pom、日本宝理pom、ASA、COC、PEEK、PVDF、PCTG、PCTA、PA612、Pa6t、Pa9t
- 主营：PMMA、PVC、TPE、耐高温抗翘曲PBT、TPU、PCT、PC、PPS、PP、PBT、POM、PC/ABS、MABS、CAP、CAB、PPO、TPV、CA、PCTG、PA66、PA6、PA6T、PA9T、PET
- 主营：POM美国杜邦、POM韩国可隆、Pom100p、Pom500p、Pom900p、M90-44、F20-03、Tpu、Tpv、Pa66、Pctg、PC、Pa6t、100P、500P、K300、PC科思创、PC帝人、PC日本出光、A3WG6、70G30HSLR、杜邦101L、A3X2G5、A3X2G7、2805
- 主营：PA66、TPEE、玻纤增强PA66、耐低温PA66、高温尼龙、PA66 A3EG6、食品级PA66、pa66加纤、PA66阻燃加纤、PPSU、PPS粉、EVA粉末、PA66 FR50、PPA、EVA、PET、LCP、POM、PA6T、PC ABS、PPS、PA9T、PA46、抗紫外线TPU
- 主营：GF增强POM、工程料PPA、陶氏热熔胶、耐磨 PTFE细粉、耐寒尼龙ST801、耐刮花PC、透明尼龙、增韧剂POM、电绝缘TPV、PVDC阻隔乳液、杜邦超韧尼龙、杜邦PTFE乳液、无卤阻燃尼龙、注塑级POM、分散液PTFE、陶氏沙林树脂、抗UVPOM、EEA热熔胶、铁氟龙乳液、热塑性弹性体TPV、陶氏增韧剂、金属粘合剂、马来酸酐接枝、尼龙pa66、导电PC塑料
- 主营：塑料原料、工程塑料、美国杜邦、耐高温PBT、PBT、德国巴斯夫、德国朗盛、PA66、PC+ABS、PET、韩国LG、日本旭化成、PC、尼龙PA、POM、PPO、PPS、奇美abs、PA6、TPU、POM100p、POM500p、pom900p、pc1100、pc/abs、日本宝理pom
- 主营：POM美国杜邦、PA66、TPU科思创、耐高温、TPU巴斯夫、PC-1100、PBT、pom100p、pom500p、Pom900p、M90-44、F20-03、日本旭化成pom、日本宝理、沙伯基础、德国巴斯夫、PEEK、PVDF、PCTG、PARA、PPA、PPSU、PMMA、PPS8670A64、PA9T、Pa612
- 主营：工程塑料、POM、PA66、PC、PA12、PA6、PEI、PPS、PPA
- 主营：pa6塑胶、pa6加纤、塑胶阻燃、塑料pbt、遮光pbt、塑料加纤、改性尼龙、abs、tpu、pc、pom、pps
- 主营：pom、pp通用料、Pa66、4815耐高温PBT、Tpee、EVA