Adhesive Flame Retardants

Polyurethane Adhesive Flame Retardant JS-A33

JS-A33 is a new halogen-free, ionic liquid flame retardant, developed for polyurethane adhesives. the products can achieve UL94-VTM-0 at a very low dosage level. Meanwhile, the tackiness of the adhesive remain intact.

1. Raw Materials

Adhesives: commercial product-A1, A2, A3, A4, A5
Flame Retardant: Inovia JS-A33
Films: Inovia flame-retardant PET film (50μm), commercial PET film (50μm), commercial PI film (50μm)

2. Processing

Ionic Liquid Drying: 90°C, 4 hours.

Mixing: Put the JS-A33 directly into the adhesive, stir evenly, then add the curing agent , continue stirring for 3 minutes. Stand still till no air bubbles can be seen. Then coat the adhesive on a film. Cure the adhesive to obtain a uniform adhesive layer.

Table 1 Process Conditions

Adhesive	A1	A2	A3	A4	A5
Solid Content	38%	38%	75%	50%	50%
Curing Condition	120°C, 5 min	105°C, 4 min	110°C, 2 min	Quick-dry adhesive	80°C, 2 min
Post-cure Condition	35°C, 2 d	35°C, 2 d	Room temp, 1 d	Room temp, 1 d	50°C, 2 d

3. Performance Data

Table 2 Performance of Adhesives Coated on FR PET Film (50μm)

Adhesive	A1	A2	A3	A4	A5
Flame Retardant Dosage	0	4%	0	0	0
Adhesive Layer Thickness	30μm	30μm	30μm	30μm	10μm
UL 94	VTM-0, no dripping	VTM-0, no dripping	VTM-0, no dripping	VTM-0, no dripping	VTM-0, no dripping
Tack by hand	Similar to original tack	Similar to original tack	Similar to original tack	Similar to original tack	Similar to original tack

Table 3 Performance of Adhesive Coated on Non-FR PET Film (50μm)

Adhesive	A1	A5
Flame Retardant Dosage	6%	6%
Adhesive Layer Thickness	10μm	10μm
UL 94	VTM-0, no dripping	VTM-0, no dripping
Tack by hand	Similar to original tack	Similar to original tack

Table 4 Performance of Adhesive Coated on PI Film (50μm)

Adhesive	A1	A2	A3	A4	A5
Flame Retardant Dosage	1%	3.5%	5%	5%	4%
Adhesive Layer Thickness	30μm	30μm	30μm	30μm	10μm
UL 94	VTM-0, no dripping	VTM-0, no dripping	VTM-0, no dripping	VTM-0, no dripping	VTM-0, no dripping
Tack by hand	Similar to original tack	Similar to original tack	Similar to original tack	Similar to original tack	Similar to original tack

Product TDS and SDS Files：

JS-A33-SDS-US Download

Polyurethane and epoxy adhesive flame retardant JS-A33_TDS Download