Talc Flashcards

(9 cards)

1
Q

What is Talc

A

Hydrated magnesium silicate

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2
Q

what is special about talc

A

only mineral that is organophilic and hydrophobic and softest mineral

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3
Q

What is molecular structure of talc

A

Silicon oxide sandwhiches magnesium oxide

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4
Q

what kind of surface energy does talc have

A

low so it is hydrophobic

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5
Q

why does talc have high oil absoprtion?

A

organophilic

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6
Q

what is hardness

A

a relative measure of strength, tested by scratching

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7
Q

is talc easy to disperse?

A

no - because it is hydrophobic and organophilic. Also when you micronise a thin layer of air is left on the surface which needs to be removed with wetting agents

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8
Q

what are the uses of talc

A

filler, coating, pitch control(because organophilic attracts pitch and detackifies)is t

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9
Q

alc abrasive

A

no which is good for coating and also wire lifetime

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