导电布屏蔽衬垫
导电布衬垫和输入/输出衬垫（I/O）由阻燃材料制成，阻燃等级达到UL94V0和UL94HB。莱尔德科技擅长根据用户要求的形状和尺寸快速调整生产。异型衬垫可以分切成定长，也可在离型纸上半切或斜切以组成框架结构。
特性和优点
- 符合RoHS
- 在很宽的频率范围内屏蔽效能>100dB (MIL-STD 285 mod.)
- 极低的压缩力，可用于材质较轻的场合
- 表面电阻率低<0.07ohms/square ,确保其高导电性 (ASTM F390).
- 产品有多种阻燃等级可选 (UL94 V0 或 UL94 HB).
- 耐磨性试验表明在1,000,000周期后，屏蔽性能没有实质性降低(ASTM D3886).
- 工作温度从-40到70° C (-40 - 158°F)
- 可背各种压敏胶带 (PSA).
应用
- 计算机和通讯设备接缝及开孔处的屏蔽或接地
- 手持设备如PDA和移动电话
- 数码相机
- 机顶盒
- 液晶显示屏 (LCD)
- 等离子面板(PDP)
- 医疗设备
产品综述
产品分类
- Aesthetically Colored Fabric-Over-Foam - Product camouflages gaskets that traditionally are visible on the outside of the chassis
- EcoGreen™ -Halogen-Free RoHS compliant EMI shields
- Poron Conductive Fabric - Hand-Held Device LCD Cushioning and EMI Protection
- Scuplted Foam - UL94 V0 rated product provides unmatched compression set performance while providing a relatively soft Compression Load Deflection (CLD) curve
- Conductive Foam - Provides shielding and grounding by providing X, Y and Z axis conductivity
导电布*
| Fabric Types | Metal Coating | Conductivity (ASTM F390) | Application | Benefits |
| Ripstop | Ni/Cu, Sn/Cu | <0.07 ohms/square |
I/O or profile gaskets | Complex shapes, flame retardant, shear resistance |
| Taffeta | Ni/Cu | <0.07 ohms/square | Profile gaskets | Complex shapes, flame retardant |
| Knit Mesh | Ni/Cu | <0.1 ohms/square | I/O gaskets | Low cost, flame retardant |
泡棉*
| Foam Types | Compression Set (ASTM D3574) | Color | Application | Benefits |
| Urethane | 5 to 10% | Charcoal or tan | I/O or profile gaskets | Flame retardant, low compression gasket, complex shapes |
| Thermoplastic Elastomer (TPE) | <20% | Off white | Profile gaskets | Complex shapes, flame retardant |
压敏胶带*
| Pressure Sensitive Adhesive | 180° Peel Strength on Stainless Steel (ASTM D-3330) | Application | Benefits |
| 3M™ 9485 or equivalent | 75 oz./in. (82N/100mm) | High tack, shear resistant | High peel strength and temperature resistant |
| Nitto D5052 or equivalent | 87 oz./in. (95N/100mm) | High tack, shear resistant | High cohesive strength, high peel strength and temperature resistant |
也可选用其它压敏胶，联系我们的工程师以得到协助。
导电布衬垫推荐的工作压缩量取决于其形状和尺寸。
通常D形，矩形和方形衬垫的压缩量为原始高度的30%到50%。C形衬垫则为原始高度的的50%到75%。
可按要求提供力-位移-电阻(FDR)曲线。
某些材料组合并不适用于所有的形状或I/O衬垫，如有不明之处请与我们的工程师联系。
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