for comparison, paper ignites at 218-246degC depending on thickness, moisture content, etc (cardboard is ~426degC), and paper will spontaneously combust at ~250degC
certain synthetic fibers are extremely flame resistant, including glass fibers (fibreglass) and modacrylic
wool and silk burn slowly, are difficult to ignite (ignition point for wool is 230°C), and may self-extinguish
leather ignites at 212°C
rubber ignites at 260-316°C
ignition and burn factors of fabric are also affected by the weight and weave of the fabric
the flammability of fabric can be drastically reduced through the use of fire retardants
cotton can be topically treated with a chemical that reduces the fabric’s flammability to the extent that it becomes nearly non-combustible
polyester can be similarly treated to make it “durably fire retardant”
these fabrics must be dry-cleaned with a non-liquid cleaning agent and the duration of fire retardant ability depends on age and number of times dry cleaned
polyethylene is much more flammable than PVC or polyester
PVC starts distorting at 60°C and starts to degrade at 70°C releasing HCl, and melts at 75-110°C but ignition point is 435-557°C
nylon, polyester and acrylic fabrics tend to be slow to ignite but once ignited, severe melting and dripping occurs
acrylic melts at 91-125°C and ignites at 560°C
nylon melts at 160-275°C and ignites at 424-532°C depending on type of nylon
polyester (aka polyethylene terephthalate or PET) requires more heat to burn than most fabrics (particularly cotton or linen but also other synthetic fibers) and when it does finally burn, it usually melts and may self-extinguish
polyester starts to melt at 220°C (one of the highest melting points for synthetics) and tends to pull away from a heat source, it will ignite at ~440°C (eg. direct flame although it is regarded as relatively fire resistant to flames)
molten polyester can cause far more severe burns to the skin than a fabric that burns away
if polyester does burn, the fumes that it releases are likely to be toxic
special Trevira™ and Avora™ polyester fibers are considered inherently or permanently fire retardant
normal cotton fabric burns readily and can ignite quickly (ignition point 250°C), resulting in a fast moving flame spread
polyester-cotton is generally MORE flammable than cotton as the molten polyester tends to wick on the cotton char, resulting in the phenomenon of scaffolding and thus it may actually burn faster than either material alone unless a fire retardant is added
polycarbonates melt at 140-150°C and ignite at 580°C