Chemi Tech Surgical Gown Repellent Breaks Through Blood-Alcohol Barrier Challenge

Blood, alcohol disinfectants, and grease penetration pose critical cross-infection risks in surgical environments. Traditional coatings often dissolve under alcohol or fail to block blood. Chemi Tech's medical composite repellent, based on an organosilicon-fluorocarbon hybrid system, delivers high-efficiency protection via dual mechanisms:

Nano-anchored film: Reactive silane groups bond with fiber hydroxyl groups, forming a dense mesh film with contact angles >125° to block capillary blood penetration;

Dynamic repulsion design: C16 alkyl chains align directionally to reduce surface energy to 15mN/m, resisting alcohol (22mN/m) and grease.

Application Case: Infection Department Gown Upgrade

A surgical gown manufacturer applied Chemi Tech Med-Shield series to pure cotton twill fabric (180g/m2) under optimized conditions:

One-dip-one-pad process: 50g/L dosage, 65% pick-up, 170℃ curing for 70 seconds;

Performance results:

Blood contact angle reached 126.2°, achieving Level 10 blood repellency (previously Level 5), reducing intraoperative splash penetration by 98%;

Alcohol resistance >30 minutes, meeting high-frequency disinfection demands;

Air permeability retention rate of 95.3%, preventing medical staff heat stress.

Technical Advantages:

Biocompatibility: PFOS/PFOA-free, passes cytotoxicity tests (ISO 10993-5 compliant);

Process adaptability: Compatible with padding, spraying, and plasma pretreatment (e.g., low-temperature atmospheric plasma);

Immediate efficacy: No curing period required; treated fabric is ready for sewing.