Polymethyl Methacrylate[6]
Overview
High molecular weight PMMA is an engineering-grade acrylic polymer characterized by chains with over 100,000 g/mol molecular weight. This variant exhibits superior mechanical properties compared to standard acrylics, including enhanced toughness and creep resistance. The material was first developed in the 1930s and has since become indispensable in industries requiring optical clarity combined with durability. Its glass-like transparency (92% light transmission) and weatherability make it preferable to polycarbonate in many outdoor applications.
Physical and Chemical Properties
With a refractive index of 1.49, high MW PMMA achieves better light transmission than most transparent plastics. The material maintains dimensional stability between -40°C to 90°C and exhibits Rockwell M hardness of 85-105. Chemically, PMMA resists dilute acids and alkalis but is attacked by chlorinated solvents and ketones. Its high molecular weight contributes to improved stress cracking resistance and lower molding shrinkage (0.2-0.8%) compared to conventional acrylics.
Main Applications
In automotive sectors, high MW PMMA is used for tail lights, instrument panels, and panoramic sunroofs due to its scratch resistance and light weight (half that of glass). The medical industry utilizes it for incubators, dialysis components, and surgical instruments. Architectural applications include skylights, noise barriers, and aquarium tunnels. Emerging uses include 3D printing filaments and optical fibers, where its high purity grades offer low light attenuation.
Safety and Storage
PMMA is generally regarded as non-hazardous under normal conditions. However, dust generated during machining requires proper ventilation as prolonged exposure may cause respiratory irritation. Sheets should be stored horizontally on flat surfaces to prevent warping. Protective films should remain until installation to avoid surface scratches. For long-term storage, maintain below 30°C with relative humidity under 60% to prevent moisture absorption.
B2B Procurement Guide
Industrial buyers should specify: 1) Molecular weight range (typically 150,000-350,000 g/mol), 2) UV stabilization requirements (for outdoor use), 3) Regulatory compliance (FDA, ISO 10993 for medical use). Bulk purchasing (pallet quantities) typically reduces costs by 15-25%. Consider regional suppliers for large sheets to minimize transportation damage. Quality certifications to verify include ASTM D788 and ISO 7823 for optical grade materials.
Related Manufacturers
- 主营：PEEK、PEEK原料、PEEK加纤、亚克力水晶粉、PEEK加碳纤、PEI塑料、PEI 1000、PES加纤、PPSU塑料、PSU塑料、PSU原料、PSU透明料、PPS加纤、POM加纤、POM改性料、PBT加纤阻燃、PBT加纤、PA66增韧、PA66加玻纤、PMMA粉、PVDF、FEP、ETFE、大金FEP、FEP聚全氟乙烯、聚全氟乙烯
- 主营：Pa66、通用塑料、工程塑料、亚克力、聚丙烯、聚乙烯、POM、聚甲醛、弹性体、EVA、PP、PC、LDPE、LLDPE、TPE、TPEE、TPU、PC/ABS、粉料、GPPS、HDPE、PBT、SEBS、PETG、PA12
- 主营：PEEK、PEEK原料、PEEK加纤、亚克力水晶粉、PEEK加碳纤、PEI塑料、PEI 1000、PES加纤、PPSU塑料、PSU塑料、PSU原料、PSU透明料、PPS加纤、POM加纤、POM改性料、PBT加纤阻燃、PBT加纤、PA66增韧、PA66加玻纤、PMMA粉、PVDF、FEP、PFA、ETFE、PA66、PES
- 主营：电绝缘、英力士、瑞士ems、pmma、耐酸碱、66-玻纤、聚丙烯、抗静电、均聚物、原厂原包、抗冲共聚、阻燃防火、无规共聚、薄壁零件、薄壁配件、抗紫外线、电器组件、埃克森美孚、巴西布拉格、apel-apl5514ml-coc、apel-coc-apl5514ml
- 主营：氟塑料、PVDF、通用料、高分子量亚克力PMMA、离子交换树脂、铁氟龙、ETFE、工程塑料、抗氧剂、EAA、PE、EVA、PQ固化剂、PA
- 主营：dupontpom、杜邦pom、耐磨pom、聚甲醛、pomgh-25d、润滑剂、增韧pom、pomlw90f2、pomm90-44、pomtc-20l、pomlw90s2、pphg820mo、增强pom、黄卡sgs、pom密度、pomtr-10d、pa6塑胶、pom润滑、pom塑胶、pomuv270z、杜邦900d、杜邦900p、伽马线pp、celconuv90z、耐侯性pom
- 主营：液体橡胶、橡胶粉末、塑料粉末、亚克力粉末、改性助剂、接枝料、工程塑料、通用塑料
- 主营：POE、EVA、PA66、PMMA亚克力、PE、ABS、PP、LDPE、HDPE、PC、PA6、POM、PEEK、PVDF、PBT
- 主营：电气用具、电线电缆、模压塑料、阻燃高纯度铁氟、管道系统、热熔胶粉、衬里管件、耐热阻燃剂、挤出成型品、模压挤出成型
- 主营：工程料、阻燃剂、poe颗粒、PMMA亚克力、工程pom、abs材料、pfa塑料、热熔胶、共聚物、无卤素、密封罐、电池盒、导光板、福聚烯、聚合物、编织线、pfa颗粒、斜齿轮、贮存箱、玻璃珠、akv30h2.0、dr48-1001、akv50h2.0、聚酰胺、塑料粒、电池壳
- 主营：PC、POM、PA66、PMMA亚克力、TPU、PC/ABS、ABS、PCTG
- 主营：塑胶原料、塑胶颗粒、工程塑料、PMMA亚克力、POM颗粒、PA66改性
- 主营：PA、PC、POM、PMMA亚克力、PBT、TPEE、PPS、PPA、PA12、PPO、ABS、POE
- 主营：悬浮粉、热熔胶、聚酰胺、高耐热、高流量、醋酸乙、玻璃珠、压克力、粘接剂、阻燃易、abs树脂、料胶粒、弹性体、密封胶、低凝胶、共聚物、密封件、改性剂、pa6沙伯、油墨pps、薄膜料、密封剂、聚烯烃、包胶料、热稳定
- 主营：POM、PA66、POE、PMMA亚克力、各种进口工程塑料、工程塑料改性