Overview
Activated corona silicone tubes undergo controlled plasma treatment to modify surface energy (typically 50-70 dynes/cm), enabling superior bonding with inks, adhesives, or coatings without compromising the bulk material's properties. The corona process creates microscopic oxidation sites while maintaining the tube's inherent flexibility and biocompatibility. Widely adopted in regulated industries, these tubes meet strict standards including USP Class VI, FDA 21 CFR 177.2600, and EU 10/2011 for food contact applications. Their activation lasts 3-6 months under proper storage, making them time-sensitive components in manufacturing workflows.
Structure and Working Principle
The tubes feature a homogeneous silicone structure with a corona-modified outer layer (0.1-0.5μm depth). The treatment converts surface methyl groups (-CH3) to hydroxyl (-OH) and carboxyl (-COOH) groups through atmospheric plasma discharge at 10-50 kV. This activation works by breaking molecular bonds via electron bombardment, creating free radicals that react with ambient oxygen. The process requires precise control—excessive treatment causes cracking, while insufficient activation fails to achieve target dyne levels. Post-treatment, tubes are typically packaged in anti-static bags to preserve surface energy.
Key Features
Surface-treated variants exhibit 200-400% improved adhesion compared to untreated silicone, with peel strength exceeding 15 N/25mm for acrylic adhesives. They maintain elongation rates of 400-700% despite surface modification. The base material offers dielectric strength >20 kV/mm and volume resistivity >1×10¹⁴ Ω·cm, making them suitable for high-voltage applications. Medical-grade versions demonstrate <0.5% extractables per ISO 10993-12, with cytotoxicity and sensitization tests compliant with USP <87> and <88>.
Application Areas
In medical device manufacturing, these tubes are essential for bonding silicone components to polyurethane or epoxy-based assemblies in IV sets, respiratory masks, and surgical tools. The automotive industry uses them for gasket coatings requiring oil resistance up to SAE 10W-40. Electronics manufacturers employ activated tubes as precision coating substrates for flexible circuits, where their stable dielectric properties prevent signal interference. Specialty printers utilize them as transfer rollers for UV-curable inks, with surface energy maintained within ±2 dyne/cm across production batches.
Maintenance and Precautions
Store tubes at 15-25°C in 40-60% RH, away from ozone generators or ionizing radiation. Surface energy decays approximately 5-8% monthly; verify with dyne pens before critical applications. Cleaning requires IPA (<70% concentration) to avoid recontamination. For installations involving friction, use silicone lubricants compatible with corona-treated surfaces. Avoid mechanical abrasion during handling—even fingerprint oils can reduce surface energy by 10-15 dyne/cm. Reactivation via plasma treatment is possible but may alter dimensional tolerances.
B2B Procurement Guide
Request certified test reports for surface energy (ASTM D2578), batch-to-batch consistency, and accelerated aging tests. Premium suppliers provide activation date stamps and nitrogen-flushed packaging. For custom orders, specify: inner/outer diameter (±0.05mm tolerance), durometer (commonly 50-80 Shore A), treatment duration (standard 30-120 seconds), and post-treatment washing requirements. MOQs typically start at 100m for standard sizes, with lead times of 4-8 weeks for specialized certifications like NSF 51.
Related Manufacturers
- 主营：电晕处理架、电晕处理机、电晕放电架、电晕硅胶管、电晕陶瓷接头、电晕陶瓷连接件、电晕处理硅胶管、铝电极、放电载体、隔离变压器
- 主营：防火带、电缆防火套管、防火套管、硅胶管、可拆卸保温套
- 主营：口罩机、pe管设备、滴灌管机、硅胶管、pp打包带设备、打包带收卷机、熔喷布挤出机、塑料管材设备、口罩无纺布机
- 主营：耐高温套管、硅胶玻纤布、电缆绝缘套管、硅胶管、电缆防护套管、电线绝缘套管、电缆电线防护套、高温套管、防火套管、防火管、排气管隔热棉、排气管隔热罩、硅胶套管、玻璃纤维套管、玻纤套管、搭扣式防火套管、高硅氧套管、芭蕉带、铝箔波纹管、耐热套管、隔热套管、绝缘套管、阻燃套管
- 主营：硅胶面罩、餐具硅胶、硅胶包胶、医用硅胶管、硅胶医疗、硅胶杯盖、硅胶耳塞、氧气面罩、液态硅胶、硅胶制品、防水护套、隔音耳塞、医用硅胶、防火硅胶、硅胶卫浴、球囊导管、硅胶奶嘴、医用推注器、硅胶扩张管、硅胶保护套、硅胶包塑料、硅胶转接头、硅胶密封片、液态硅胶制品、液态硅胶注塑、液态硅胶制品定制生产
- 主营：工业橡胶、定制硅胶制品、农业橡胶、硅胶管、水杯硅胶垫、橡胶制品定制、可开模具制造、三元乙丙橡胶密封、橡胶套加工定制、穿板护套加工定制、橡胶圈
- 主营：通风管、高温风管、防静电软管、硅胶管、耐高温软管、食品级软管、伸缩风管、耐腐蚀风管、除尘软管、耐高温除尘管、除尘管、高温软管、阻燃除尘管、吸尘软管、吸尘管、pu钢丝软管、无塑化剂软管、食品级钢丝软管、耐热风管、PTFE风管、铁氟龙风管、洁净风管、防火风管、阻燃防静电软管、通风软管、耐高温风管
- 主营：304不锈钢无缝管、316L不锈钢管、脱脂不锈钢管、硅胶管、卫生级不锈钢管、不锈钢焊管、不锈钢方管、BA不锈钢管、拉丝不锈钢方管、EP电解抛光不锈钢管、精密不锈钢管、大口径不锈钢焊管、316L高压细水雾管、2205无缝管管、2507不锈钢管、食品级不锈钢管、不锈钢盘管、软态不锈钢管、不锈钢弯头、不锈钢三通、不锈钢法兰、卫生级管件、不锈钢异径管、不锈钢阀门、904L不锈钢、201不锈钢管
- 主营：密封圈、金属软管、橡胶密封件、硅胶管、金属波纹管、防尘密封硅胶圈
- 主营：排吸水橡胶管、耐油低压胶管、低压蒸汽胶管、硅胶管、钢丝编织胶管、机械液压软管、耐高温金属软管、水利灌浆塞、大口径专用胶管
- 主营：牛奶管、软管泵、橡胶管、硅胶管、乳品管、饮料输送管、耐腐蚀软管、特氟龙软管、食品级蒸汽管、白色卫生级软管
- 主营：彗星式纤维滤料、纤维球滤料、石英砂滤料、硅胶管、核桃壳滤料、椰壳活性炭滤料、锰砂滤料、盘式曝气器、管式曝气器、旋流曝气器、单孔膜曝气器、ABS滤头、蜂窝斜管、鲍尔环填料、多面空心球、流化床填料、悬浮球填料、泰勒花环填料、ABS絮凝球、矩鞍环填料、立体弹性填料、波纹填料、组合填料、阶梯环填料、MBBR填料、液面覆盖球填料
- 主营：电缆防火包带、防火包、电缆防火涂料、硅胶管、无机防火隔板、玻镁防火隔板、防火布、电缆保护套、无机防火堵料、防火密封胶、防火涂层板、阻火模块、灭火毯、柔性有机防火堵料、烟道板、阻火圈、钢结构防火涂料、防火槽盒、高硅氧防火布、陶瓷纤维布、石棉防火布、电焊防火毯、电缆缠绕阻火包带
- 主营：硅胶加热带、铂铑热电偶、补偿导线、硅胶管、高温线、K型热电偶、钨铼热电偶、铠装热电偶、热电阻、铂金
- 主营：橡胶管、仿藤条、tpr塑料、硅胶管、挤出机、滤胶机、电缆橡胶、螺杆橡胶、再生塑料、塑料片材、销钉橡胶、汽车橡胶、塑料装饰、废旧塑料、螺杆塑料、橡胶挤管、复合橡胶、塑料胶条、双螺杆pvc、螺旋护套、丁基胶条、挤出设备、塑料制粒机、橡胶过滤机、饲料造粒机、橡胶成型机