Overview
Transparent high-temperature resistant materials are engineered to withstand extreme heat while maintaining optical clarity. These include fused quartz, borosilicate glass, and specialized glass-ceramics like ALON. They are critical in industries where visual monitoring of high-temperature processes is required, such as semiconductor manufacturing or aerospace. These materials are distinct from standard glass due to their low thermal expansion coefficients and resistance to thermal shock. Innovations in polymer science have also introduced transparent polyimides capable of enduring temperatures up to 400°C, expanding applications in flexible electronics.
Physical and Chemical Properties
Key properties include thermal stability (typically 500–1,600°C), UV/IR transparency, and chemical inertness. Fused quartz, for example, retains 90% light transmission at 1,000°C. Most materials exhibit hardness ratings of 5–7 on the Mohs scale and dielectric strength above 10 kV/mm. Thermal expansion is a critical parameter, with quartz showing just 0.55×10⁻⁶/°C. Chemical resistance varies; borosilicate resists acids but is vulnerable to alkalis, while sapphire (Al₂O₃) withstands harsh chemical environments. Electrical resistivity typically exceeds 10¹⁰ Ω·cm at room temperature.
Main Applications
Industrial applications dominate usage, including viewports for furnaces (1,200°C+), infrared windows in missile guidance systems, and protective covers for high-power lasers. The semiconductor industry relies on quartz for wafer processing chambers due to its purity and thermal endurance. Emerging applications include transparent armor systems combining ALON with polymers, and solar concentrators requiring both durability and light transmission. Medical sterilization equipment increasingly utilizes these materials for steam-resistant inspection windows.
Safety and Storage
Despite their durability, these materials are brittle and sensitive to impact. Proper handling requires edge protection and avoidance of point loads. Storage should prevent surface contamination that could lead to devitrification (crystallization) at high temperatures. Machining generates fine particulate; use wet methods and NIOSH-approved respirators. Thermal cycling should follow manufacturer guidelines—rapid cooling of quartz below 300°C may cause fracture. Some glass-ceramics contain heavy metals (e.g., lead in Schott ROBAX), requiring hazardous material protocols.
B2B Procurement Guide
Specify parameters including: maximum service temperature (continuous vs. peak), thermal cycling requirements, optical transmission spectrum (UV-VIS-IR), and mechanical load conditions. For chemical environments, provide details on exposure to acids, alkalis, or plasma. Lead times for custom shapes can exceed 12 weeks. Consider secondary processing costs—diamond grinding of sapphire adds $20–$100 per part. For large orders, negotiate bulk pricing; quartz sheets over 1m² often see 15–30% volume discounts. Always request material certifications (e.g., ISO 9001 for optical homogeneity).
Related Manufacturers
- 主营：润滑剂、石墨粉、超细石墨粉、耐高温石墨粉、耐高温云母片、阻燃石墨、超细石墨、高纯石墨、煅烧高岭土、耐火泥造纸、润滑石墨铅粉、合成氟金云母粉、高岭土、种子包衣粉、麦饭石粉、白色电气石粉、远红外粉、导电石墨粉、云母片、天然云母片、透明云母片、云母板、沸石、沸石粉、麦饭石颗粒
- 主营：氧化铁颜料、铁粉、膨润土、耐高温、珍珠岩、矿物纤维、木质纤维、硅酸铝纤维、海泡石纤维、云母粉
- 主营：PA66、POM、PA12、耐高温、PP、ABS、PC、EVA、LDPE、PA6、PPS、PA、PET、HDPE、云天化POM、旭化成POM、宝理POM、韩国工程POM、台塑POM、奇美ABS、PP韩国SK、泰科纳POM、PC沙伯基础、德国拜耳PC、PC日本出光、杜邦POM
- 主营：耐高温、聚乙烯板、链条导轨
- 主营：PP、PA6、EMA、耐高温PC、PA66、ABS、PCABS、EBA、EVA、PPO、PBT、PPA、PETG、PC聚碳酸酯
- 主营：PC、POM、PPS、耐高温、PPO、PSU、PES、PEEK、PA66、TPU、TPE、PTFE、PVDF、PFA、FEP、PE、ABS、LCP、PEI、PBT、PA12、PA11、PET、PMMA、PA6
- 主营：pcad-5503、防开裂、poe塑胶、耐高温、防火ppo、热熔胶、密封eaa、pclux9610、高耐热、聚合物、宝泰菱、abs阻燃、软管tpu、pom韩国、570注塑、耐磨tpu、绝缘耐、45d薄膜、abs注塑、pcml-1105、emstr90tl、注塑poe、灯具abs、增强pet、聚丙烯、水解tpu
- 主营：眼镜架、阻燃剂、热熔胶、耐高温、保险扛、手机料、内涂层、安全帽、电脑锣、玻璃珠、6700h-250、哈啦粉、密封圈、车部件、冷冻管、聚酰胺、仪表盘、照明灯、化妆品、购物袋、lcp橡胶、专用料、瓶盖料、透明料、玻纤增、背心袋
- 主营：耐高温、塑胶颗粒、液晶聚合物塑料
- 主营：土炮机、瓶盖料、r-4-230bl、耐高温、耐 温pp、包装箱、gpps-500n、洗衣机、碳纤维、电池盒、颗粒料、电水壶、聚塑料、聚丙烯、仪表壳、气动管、塑料袋、塑胶料、包装袋、淋浴罩、门把手、件轴承、pvc颗粒、塑料箱、电池壳、开口剂
- 主营：丙烯酸聚氨酯面漆、玻璃鳞片胶泥、氟碳漆、耐高温、红丹漆、环氧富锌底漆、环氧沥青漆、环氧煤沥青漆、环氧树脂、环氧云铁中间漆、氰凝防水防腐涂料、湿固化环氧涂料、手工聚脲、无溶剂环氧涂料、乙烯基树脂、银粉漆、有机硅高温涂料
- 主营：线性pe料、塑料原料、塑胶颗粒、PC聚碳酸酯材料、原料颗粒、塑胶原料、塑料颗粒、ABS原料、聚丙烯pp、低压高密度聚乙烯HDPE、PA尼龙原料、POM聚甲醛原料、PC聚碳酸酯原料、PBT原料、PCTG原料、POE增韧弹性体、EVA原料、SURLYN沙林树脂、铁氟龙特种工程塑料、PBT巴斯夫、PBT美国杜邦、PCABS 沙伯基础、岳化尼龙PA6、瑞士EMS尼龙PA6、POE埃克森、聚碳酸酯原料
- 主营：tpu薄膜、EVA玻璃膜、EVA封装膜、特殊材料、吸塑膜膜、聚氨酯薄膜、太阳能光伏膜、tpu膜、免喷胶吸塑膜、玻璃夹胶膜、eva光伏膜、tpu防水透气膜、防水透湿膜、免喷胶平贴膜
- 主营：橡胶垫、橡胶制品、橡胶密封圈、耐高温、橡胶异形件、夹布输水胶管、耐磨夹布胶管、橡胶密封件、橡胶套、橡胶气囊、硅胶垫、橡胶软连接、骨架油封、O型圈、橡胶弹簧、四氟垫片、橡胶垫片、橡胶减震器、橡胶密封条、石棉垫片、金属缠绕垫片、橡胶膜片、硅胶套、医用硅胶管、橡胶球、格莱圈
- 主营：PA6、PBT、PC、耐高温、PC/ABS、PPS、TPU、TPV、ABS、PA66、POM、PPO/PPE、PMMA、ASA、PPA、EMAA、TPEE、PCTG、POE、EVA、PCT、SEBS、EAA、PEEK、PSU、PEI