Burning solids Flashcards

1
Q

pyrolysis of wood

A

thermal decomposition to produce lower molecular mass compounds with out oxygen
because wood = cellulose it burns easily

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2
Q

thermoplastics

A
  • linear chains, reversible melting
  • melts before it ignites and can be spread by burning droplets/ pools
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3
Q

thermoset

A

-cross link structure, does not melt
- decomposes and leaves char, burns like wood

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4
Q

thermoset decomp - end chain scission

A

removes monomer from end of backbone

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5
Q

thermoset decomp - random scission

A

main chain broken at random points until small sections are made

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6
Q

thermoset decomp - chain stripping

A

back bone intact but molecules not part of the main chain break away

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7
Q

thermoset decomp - crosslinking

A

more crosslinking added - generates char

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8
Q

burning metals

A

Al- can burn but is rare
Mg- burns with a bright white flame; not extinguished by water

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