Overview
Light-blocking polycarbonate is a modified form of standard polycarbonate (PC) engineered to reduce or eliminate light transmission through the addition of opacifiers, pigments, or layered structures. Unlike transparent PC, this variant prioritizes privacy, light control, or protection of sensitive components from UV damage. Industrially, it is produced via extrusion or injection molding, with additives like carbon black or titanium dioxide blended to achieve desired opacity levels. The material retains core advantages of polycarbonate, such as high impact resistance and thermal stability, while addressing niche requirements in sectors like electronics and construction.
Physical and Chemical Properties
The material exhibits a typical density range of 1.2–1.4 g/cm³, with melting points varying between 155°C and 300°C depending on additives. Its light-blocking efficiency is measured by light transmission rate (LTR), which can be tailored from near-zero to partial opacity (e.g., 5–20% LTR). Chemically, it shares polycarbonate’s resistance to acids, oils, and alcohols but remains vulnerable to strong alkalis and certain hydrocarbons. The inclusion of light-absorbing additives may alter flammability ratings, often achieving UL94 V-0 or similar classifications for fire safety.
Main Applications
In electronics, light-blocking PC is used for LED lamp housings to direct light output and reduce glare. Automotive manufacturers employ it for sensor covers and dashboard components where internal electronics require shielding from sunlight. The construction sector utilizes opaque PC sheets for skylights or partitions requiring privacy without sacrificing durability. Medical devices, such as imaging equipment housings, also benefit from its combination of sterilizability and light isolation properties.
Safety and Storage
While non-toxic in solid form, machining (e.g., cutting, drilling) generates dust that may irritate respiratory systems. Adequate ventilation or PPE like N95 masks is recommended during processing. Storage should avoid prolonged UV exposure to prevent surface degradation, even in opaque formulations. Pellets or sheets are typically packaged in moisture-resistant containers to maintain material integrity before fabrication.
B2B Procurement Guide
Buyers should specify key parameters such as light transmission percentage, UV stabilization needs, and mechanical strength requirements (e.g., tensile strength ≥60 MPa). Bulk orders (≥1 ton) often qualify for discounts of 10–15% from suppliers. Quality certifications like ISO 9001 or RoHS compliance should be verified. Lead times vary from 2–6 weeks for customized formulations, with Asian suppliers dominating cost-sensitive markets and European/N American producers offering higher-grade specialty variants.
Related Manufacturers
- 主营：F20-03、m90-44、m90-45、聚碳酸酯、PC-1100、pom100p、pom500p、pom900p、云天化pom、宝理pom、旭化成pom、杜邦pom、巴斯夫pa66、杜邦pa66、聚甲醛原料、聚丙烯pp、埃克森美孚POE、美国苏威PPSU、科思创PC、沙伯基础PC、李长荣聚丙烯、路博润TPU、埃克森ldpe、巴塞尔ldpe、韩华ldpe、日本三菱pom
- 主营：聚碳酸酯、pc、pps、PTFE
- 主营：定制 PC 挡风玻璃、PC亚克力CNC加工、加工PC 板、聚碳酸酯板 CNC、电池CCS绝缘件、PC电气元件定制、防眩光涂层PC板、亚克力加工、防静电pc板、抗静电pc板、超耐磨pc板、亚克力板折弯、亚克力板切割、亚克力板雕刻、亚克力来图精密加工
- 主营：TPE、包胶TPE、三菱PC、天津PC聚碳酸酯塑料、高透明PP、超透明PP、透明PP
- 主营：耐力板、紫外线、抗冲击、阳光板、阳光房、pc实心板、pc板温室、pc板幕墙、防弹pc板、透明pc板、绿色pc板、保温pc板、pc板大棚、pc颗粒板、pc磨砂板、灯箱pc板、双层pc板、高透pc板、pc板雨棚、pc中空板、耐热pc板、蓝色pc板、防雾滴pc、防火pc板、防晒pc板
- 主营：ABS、TPU、PVDF、PTFE、PPS、EVA、PA66、PA12、PBT、POM、PPSU、LCP、PA46、PA6、PC、PPO、PPE、PVDC
- 主营：48115-201、poe塑胶、胶黏剂、防火ppo、热熔胶、pcl-1250y、高耐热、pcl-1250l、自润滑、pom韩国、af-1145v0、耐磨tpv、poe塑料、气动管、r-4-230bl、手机壳、注塑pom、增强pet、聚丙烯、tpv塑料、汽车油、无毒ppo、纯树脂、耐磨pom、红外线
- 主营：相容剂、生物基pc、增强塑料、聚碳酸酯、阻燃pc/abs、抽粒塑料、抗冲改性剂、充电器外壳、红外线穿透pc、阻燃pc塑胶原料
- 主营：线缆挤、眼镜架、耐力板、玻纤填、片管材、骨架件、保护膜、耐消毒、摄像头、导光板、聚合物、日用品、内润滑、开关件、玻璃珠、改性料、聚碳酸、易流动、反射板、传感器、胶颗粒、阻燃5va、化妆品、型棒材、透明罩
- 主营：PP、TPEE、PA66、POM、PBT、PC、ABS
- 主营：增强pbt、阻燃剂、pp环保v2、pp耐低温、pe相容剂、pet相容剂、abs相容剂、箱包板材、尼龙增韧、pp阻燃母粒、合金相容剂、板材增韧剂、增强改性剂、激光镭雕粉、超声波焊接、激光镭雕助剂、塑料专用环保、无卤聚酯阻燃、高温尼龙阻燃、透明无卤阻燃、激光打标镭雕、环保阻燃母粒
- 主营：专用注塑原料
- 主营：PP、ABS、PA66、TPU、TPV、PBT、PC、POM、PPO、PC/ABS
- 主营：云天化pom、美国杜邦pom、日本宝理pom、聚碳酸酯、日本旭化成pom、德国巴斯夫tpu、科思创tpu、奇美abs、德国朗盛pa66、美国首诺pom、泰科纳pom、韩国可隆pom、韩国工程pom、韩国乐天pc、日本三菱pom、PPO、沙伯基础pc/abs、法国阿科玛pvdf、PPA、云天化POM m90、美国陶氏poe、埃克森美孚poe、云天化聚甲醛、pom云天化m90、LCP、PTFE
- 主营：防火abs、PP、尼龙、HDPE、LDPE、巴塞尔、晓星、台塑、大林
- 主营：阳光板、耐力板、采光瓦、聚碳酸酯板、阳光房顶棚、锁扣板、pc阳光板、pc耐力板、铝合金车棚、pc透明瓦、frp采光瓦、840采光瓦、蜂窝阳光板、中空阳光板、pc锁扣板、pc采光瓦、耐力板雨棚、耐力板车棚、透明瓦、840透明瓦、PC耐力板、阳光板锁扣板、铝合金支架雨棚、透明采光瓦、frp瓦
- 主营：POE、EVA、PA66、聚碳酸酯、PE、ABS、PP、LDPE、HDPE、PC、PA6、POM、PEEK、PVDF、PBT
- 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：PP、PA6、EMA、PC聚碳酸酯、PA66、ABS、PCABS、EBA、EVA、PPO、PBT、PPA、PETG
- 主营：POM、ABS、PC、PP、德国巴斯夫、日本宝理、韩国SK、PA66
- 主营：甲基丙烯酸十二酯、甲基丙烯酸十六酯、甲基丙烯酸十八酯、聚碳酸酯二醇、丙烯酸十二酯、丙烯酸十六酯、丙烯酸十八酯、V50引发剂、偶氮二异丁咪唑啉盐酸盐、N-乙酰己内酰胺、硅烷偶联剂、双马来酰亚胺、马来酸酯、缩水甘油酯、缩水甘油醚、甲基咪唑、N-异丙基丙烯酰胺、金属萃取剂