UL94 VO Rated Heat Resistant Adhesives
About UL94 VO Rated Adhesives
The UL94 standard in hot melt adhesives provides reduced safety hazards, increased equipment performance, and minimized replacement costs. Adhesives can be developed to match a sliding scale of fire resistance. Fire and heat resistant adhesives are used for electronics, construction, public transportation, aircraft applications, and more!
Heat and Fire Resistant Hot Melt
When you are looking for a hot melt that is fire and heat resistant look for a UL 94 VO flame rating. UL is the abbreviation for Underwriters Laboratories, this is an independent organization in the United States to control and certify product safety. After a UL94 VO fire-resistance rating is identified, you can then explore other adhesive properties such as strength, cure speed, flexibility, and viscosity.
Applications for Fire Resistant Adhesives
- Public Transportation
Best for High Volume Applications: Medium Open Time UL 94 Rated Bulk Hot Melt for Product Assembly
Use bulk hot melt for mid to high volume applications. This Infinity Bond high performance bulk hot melt is excellent for product assembly applications and carries a UL 94 V2 flame rating. It is also FDA approved for non-direct food contact.View Details
Best for Low Volume Applications: 3M Scotch Weld 3748 VO Hot melt - Q, TC and PG
Use hot melt glue sticks for low volume applications. The 3M 3748 VO is a unique hot melt adhesive often used in electronic assembly because it provides excellent thermal shock resistance and is non-corrosive to copper. The 3M 3748 VO also provides an excellent bond to polyolefins and meets UL1410 requirements.View Details
All UL94 VO Rated Heat Resistant Adhesives
Yes! There is a distinct difference. Let's set the story straight.
Fire resistant adhesives - these are often products such as inorganic adhesive cements and sealants. They don't burn and they withstand extreme temperatures. These types of products are often used for applications in blast furnaces, ovens, etc. They don't do anything to stop an assembly burning - but they do a great job of holding all the burning bits together.
Fire retardant adhesives - these help to extinguish the flames and slow the spread of fire.
UL is the abbreviation for the Underwriters Laboratories, this is an independent organization in the United States to control and certificate product safety. UL provides safety related certification, validation, inspection and testing services to a range of clients including manufacturers, retailers, policy makers and regulators.
- HB: Slow burning on a horizontal speciment; burning rate < 76 mm/min for thickness < 3 mm or burning stops before 100 mm.
- V-2: Burning stops within 30 seconds on a vertical specimen; drips of particles allowed as long as they are no inflamed.
- V-1: Burning stops within 30 seconds on a vertical specimen; drips of particles allowed as long as they are not inflamed.
- V-0: Burning stops within 10 seconds on a vertical specimen; drips of particles allowed as long as they are not inflamed.
- 5VB: Burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may develop a hole.
- 5VA: Burning stops within 60 seconds on a vertical specimen; no drips allowed; plaque specimens may not develop a hole.
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