Debonding Rectification and Selection Guide For Single-sided Self-adhesive Silicone Strips, Based On HG/T 2454

According to Chilok MRO maintenance statistics, the lamination qualification rate of self-adhesive silicone strips for cabinet dustproof and sound insulation is only 71%. Most failures are caused by mismatched adhesive type and non-standard construction rather than material quality. This article provides full-process technical specifications based on HG/T 2454 rubber and plastic sealing standard.

1. Working Condition Matching Of Two Adhesive Types

Mixed usage of two adhesives causes irreversible debonding:

1. Acrylic adhesive: High initial viscosity, poor temperature resistance, suitable for indoor cabinet sealing under normal temperature;

2. Silicone adhesive: Wide temperature resistance range (-40℃~180℃) and excellent humidity aging resistance, suitable for high-temperature equipment and outdoor electric cabinet sealing.

2. Substrate Activation Pre-lamination Process

1. Degreasing: Mixed industrial degreaser and purified water (1:5) to wipe processing oil, single alcohol wiping is forbidden;

2. Surface activation: Thin-coat primer activator, stand for 90s for solvent volatilization;

3. Environment control: Lamination temperature 18~28℃, relative humidity ≤55%, outdoor operation forbidden on rainy days;

4. Roller compaction: Use 5kg rubber roller for uniform pressing to eliminate internal bubbles.

3. On-site Remedial Measures For Failed Lamination

1. Slight edge warping: Coat activator on gap position, compact under 40℃ constant temperature, cure for 2 hours;

2. Large-area debonding: Polish residual adhesive and base material oxide layer, replace matched silicone strip for re-lamination;

3. Compression rebound failure: Replace with 45~55HA medium-hardness modified silicone material to avoid permanent compression deformation.