Vulcanized fiber sheet (FLAME RETARDANT
/HEAT RESISTANCE /WATER RESISTANCE )
Flame Retardant: YMVF-77
U.L. Listed 94 V-O
Thickness: .010”-.062”
Hot Wire Ignition: 300 sec. Min.
Heat Deflection: 120C
Flexibility: Good |
Vulcanized fibre is a material manufactured by gelatinizing several plies of high purity cellulose papers. It has extremely high internal bond strength, and mechanically excellent punching, forming, machining and many other unique properties. TOYO proudly carries specialty grades to comply any application required by users, such as water resistant grades, flame retardant grades, combination grades etc. in roll, sheet and coil |
High Temperature: YMVF-57
Heat Tolerance:
40,000 hrs.: 120C
(JIS K6911) 200C
Flame Listing 94 HB
Thickness: .020”-.100”
Water absorption: < 10% |
Moisture is to fibre what heat is to metal. Normal moisture content (at typical ambient temperature/humidity ranges) is 5%-8%. This amount of moisture in fibre contributes to its resilience, punching and forming capabilities. Water softens or plasticizes it. In use, moisture can cause dimensional changes and should be protected against via a coating. Again, most of these effects can be minimized or eliminated through proper application selection and a quick water resistant coating. |
Moisture Resistant: YMVF-77
1 Hr. Water Absorption: <10%
Electrical Insulation: Excellent
Hot wire ignition: >300 sec.
Flame Retardant coating: V-0, V-1
Track Resistance: 420V |
TYPICAL PROPERTIES OF VULCANIZED FIBRE
- Tensile Strength, psi 6,000-12,000
- Flexural Strength, psi 12,000-20,000
- Compressive Strength, psi 20,000-30,000
- Shear Strength, psi 11,000-15,000
- Impact Strength, ft/lbs per in. 4-8
- Rockwell Hardness R60-R100
- Density, gm/cc 1.1-1.3
- Dielectric Strength, vpm 150-400
- Power Factor, 1000kc .03-.08
- Dielectric Constant 4-7
- Water Absorption, 2hr,1/8",% 15
- Thermal Conductivity, Btu/hr/sqft/F/in 3
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