Overview
Diffuse reflective polycarbonate sheets are a specialized variant of polycarbonate panels designed to evenly distribute light while retaining the material’s inherent strength and transparency. Unlike clear polycarbonate, these sheets incorporate microscopic surface textures or embedded diffusing particles to scatter incident light, minimizing glare and creating soft, shadow-free illumination. Originally developed for industrial lighting and architectural applications, they are now widely adopted in sectors requiring both durability and optical control. Manufacturers achieve light diffusion through methods like co-extrusion (adding diffusing layers) or post-production surface treatments (e.g., embossing or chemical etching). The sheets typically maintain 70–90% light transmission while achieving haze levels of 50–90%, depending on the desired balance between brightness and diffusion.
Structure and Working Principle
The sheet’s structure consists of a polycarbonate base layer, often reinforced with UV-resistant coatings, and a light-diffusing component. In embossed sheets, irregular surface patterns refract light at multiple angles, while bulk-diffusing sheets contain dispersed particles (e.g., silica or acrylic) that internally scatter light. Multi-wall polycarbonate versions with hollow chambers further enhance thermal insulation without compromising diffusion. Light enters the panel and interacts with the diffusing elements, causing photons to change direction randomly. This breaks up direct beams into a homogeneous glow, ideal for applications like backlit signage where even illumination is critical. Advanced grades may include prismatic microstructures to control diffusion angles or wavelength-selective additives for color tuning.
Key Features
Impact resistance is a standout feature, with diffuse reflective polycarbonate sheets offering up to 250 times the strength of glass while weighing half as much. They withstand hail, wind loads, and vandalism, making them suitable for high-traffic areas. UV stabilization prevents yellowing and brittleness, with some products guaranteeing 10+ years of outdoor performance. Thermal properties include a service temperature range of -40°C to 120°C, with flame-retardant options available. The material’s light weight simplifies installation, and its machinability allows for on-site cutting and drilling. Unlike acrylic diffusers, polycarbonate maintains flexibility in cold environments, reducing crack risks during winter.
Application Areas
Architecture: Skylights and canopy covers benefit from the sheets’ ability to diffuse sunlight while blocking UV rays, reducing heat buildup and glare. Stadium roofs and atriums use thick multi-wall versions for structural load-bearing and thermal efficiency. Lighting Industry: LED panel lights and strip housings leverage the material’s high light transmission to maximize lumen output while eliminating hotspots. Retail displays and museum lighting rely on premium grades with >85% haze for artifact-free illumination. Agriculture: Greenhouse panels balance light diffusion with PAR (photosynthetically active radiation) transmission, promoting even plant growth without scorching. Some sheets incorporate anti-condensation coatings to prevent water droplet formation.
Maintenance and Precautions
Cleaning requires mild soap solutions and soft cloths to avoid scratching the surface. Abrasive cleaners or high-pressure washers can degrade diffusion patterns. For cutting, use carbide-tipped blades with slow feed rates to prevent chipping; laser cutting is unsuitable due to melting risks. Storage should be flat in a dry, shaded area to prevent warping or moisture absorption. During installation, allow expansion gaps (3–5 mm per meter) to accommodate thermal movement. Avoid contact with solvents like acetone or gasoline, which can cause stress cracking. For electrical applications, ensure proper grounding as static buildup may attract dust.
B2B Procurement Guide
Specify thickness (common range: 1–12 mm), with thicker sheets offering better impact resistance but reduced light transmission. Critical optical metrics include total luminous transmittance (ASTM D1003) and haze percentage. For outdoor projects, confirm UV protection is on the weather-facing surface. Bulk orders typically require 2–4-week lead times for custom sizes or coatings. Sample testing under real-use conditions (e.g., sunlight exposure or load tests) is recommended. Top suppliers include Palram, SABIC, and Brett Martin, with Asian manufacturers offering cost-competitive alternatives. MOQs vary from 100–500 sqm for standard grades.
Related Manufacturers
- 主营：PC阳光板、聚碳酸U型锁扣中空板、聚碳酸酯PC插接板、PC耐力板、声屏障双面UV耐力板、聚碳酸酯U型耐力板、聚碳酸酯U型实心板、PC中空瓦楞阳光板、U型锁扣阳光板、聚碳酸酯实心板、聚碳酸酯四层阳光板、聚碳酸酯防雾滴阳光板、聚碳酸酯PC波浪瓦、聚碳酸酯PC扩散板、三层中空瓦楞阳光板、聚碳酸酯三层阳光板、聚碳酸酯米子型阳光板、四层中空瓦楞阳光板、聚碳酸酯中空板、聚碳酸酯U型锁扣板、PC广告灯箱板、幕墙PC插接阳光板、聚碳酸酯中空瓦楞板、聚碳酸酯PC采光瓦、聚碳酸酯板
- 主营：pc阳光板、双层湖蓝、阳光板定制、广饶8mm耐力板、双层阳光板、福鑫阳光板
- 主营：广饶8mm耐力板、PC阳光板、聚碳酸酯阳光板
- 主营：pc扩散板、pc磨砂板、pc颗粒板、pc耐力板、pc防静电板、pc加硬板、亚克力扩散板、亚克力防静电板、pvc硬板、pvc防静电板、pc板加工、pvc板加工、亚克力板加工
- 主营：PC扩散板、PC磨砂板、PC颗粒板、PC耐力板、防静电PC板、耐磨PC板、阻燃PC板、亚克力扩散板、防静电亚克力板、PVC硬板、PC 板加工、亚克力板加工、PVC板加工
- 主营：阳光瓦、采光瓦、树脂瓦、耐力板、别墅仿古瓦、玻璃钢透明瓦、屋顶车棚透明瓦、聚酯纤维阳光板、防腐瓦、FRP采光板、水白色阳光板、一级阻燃采光板、可溶性采光带、采光波纹板、760型角驰瓦、镀锌卷、采光卷、阻燃采光瓦、全透明采光瓦、波浪板琉璃瓦、白色角驰瓦、蓝色阳光瓦、930瓦楞板、1050树脂瓦、FRP阳光板
- 主营：pc磨砂板、pc乳白板、pc加硬板、耐力板、pc耐力板、pc阻燃板、pc洁光板、pc防雾板、pc阳光板、pc灯罩板、pc防静电板、阳光房车棚、聚碳酸酯板
- 主营：耐力板、合成树脂瓦、采光板、FRP采光板
- 主营：防护板、扩散板加工、雾化板、耐力板、塑料板加工、petg板材、pc塑料片、透明pc板、磨砂pc板、pc乳白板、pc塑料板、烟灰色pc、pc板雕刻、雨棚pc板、亚克力加工、pc片雕刻、板pc板材、光学pc板、pc扩散板、pc板切割、防火pc板、pc透明板、pc板加工、PC板、亚克力板
- 主营：透明板、pet板材、透光板、耐力板、隔音板、聚酯板、塑料板、聚乙烯板、亚克力板、防静电板、防静电pvc、抗静电板、防静电pc板、聚碳酸酯板、聚氯乙烯板、防静电地板、高透明pet板、闸机口门板、防静电pet板、聚氨酯板材、制作无尘箱、高尔夫球车挡板、耐磨阻燃pet材料、防雾PMMA板、双面硬化PC板
- 主营：采光板、透光板、阳光板、耐力板、pc耐力板、耐力板定制、透明耐力板、阳光房耐力板、波浪瓦、透明采光瓦、pc板、洁光板、颗粒板、磨砂板、插接板、蜂窝板、扩散板、铝合金支架、pc阳光板、雨棚pc板、PC板、PC蜂窝板、pc磨砂板
- 主营：亚克力展柜、亚克力灯罩、亚克力灯板、耐力板、亚克力定制、弧形亚克力、弧形有机玻璃、曲面有机玻璃、透明亚克力、亚克力造型、有机玻璃模型、挡风有机玻璃、舱盖有机玻璃、异形有机玻璃定制、天津亚克力定制、有机玻璃加工、亚克力加工、亚克力有机玻璃加工、招牌门头加工、亚克公共标牌、银饰玻璃展示柜、亚克力展示盒加工、无人机透明罩、无尘车间隔板、亚克力墙体柜、有机玻璃柜加工
- 主营：采光瓦、透明瓦、金属采石瓦、PC耐力板、合成树脂瓦、防腐檩条
- 主营：市政护栏、声屏障、边坡防护网、耐力板、施工围挡、球场围网、铸铁护栏、石笼网、刀片刺绳、防抛网、拒马护栏
- 主营：玻璃钢采光罩、玻璃钢阀门保温罩壳、玻璃钢电机罩、屋面耐力板采光罩、玻璃钢净化塔、玻璃钢天沟、玻璃钢酸洗槽、玻璃钢阀门外壳、可拆卸阀门保温套、玻璃钢阀门保温外壳、阀门可拆卸式保温壳、机械阀门玻璃钢保温罩、玻璃钢阀门盒、屋面排水天沟、组合式阀门盒、玻璃钢阀门保护壳、阀门玻璃钢罩壳、可拆卸阀门保温壳、玻璃钢防尘电机罩、SMC 阀门保护壳、车间天沟雨水槽、电解槽、屋顶顺水槽
- 主营：排水槽、隔热瓦、复合瓦、pc耐力板、采光带、透明瓦、围墙瓦、仿古瓦、钢芯瓦、阳光板、厂房瓦、塑钢瓦、屋顶瓦、树脂瓦、屋面瓦、一体瓦、采光瓦、ASA小青瓦、塑料瓦、种植槽、隔热雨棚、防腐瓦、仿古塑料瓦、pvc中空瓦、pvc塑料瓦、pvc瓦
- 主营：工具柜、接地线、绝缘胶垫、耐力板、耐磨橡胶板、黄色环氧板、绝缘橡胶垫、铝合金挡水板、防鸟挡板、防鸟封堵箱、防鸟刺、驱鸟器、环氧树脂板、防汛挡板、电木板、电缆支架、frp垫块、标志桩、防鸟罩、绝缘梯、绝缘凳、杆顶绝缘隔板、绝缘操作杆、围栏
- 主营：peek板棒材、电木板、尼龙板、PC耐力板棒价格、PET板材、电木棒、ABS板材、pom板、聚氨酯棒、PVC板棒、PC透明棒、pp塑料板材、亚克力板材
- 主营：加硬pc板、防静电pc板、高耐磨pc板、pc耐力板、PC扩散板、PC磨砂板