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Re: [TCML] Seaching for Mike Delosier



"Keeping in mind the, and now I can't think of the name of it, chart that
tells the static characteristics of materials."

That would be the TriboElectric Series;

Polyurethane foam

+60

+N

All materials are good insulators (>1000 T ohm cm) unless noted.

Sorbothane

+58

-W

Slightly conductive. (120 G ohm cm).

Box sealing tape (BOPP)

+55

+W

Non-sticky side. Becomes more negative if sanded down to the BOPP film.

Hair, oily skin

+45

+N

Skin is conductive. Cannot be charged by metal rubbing.

Solid polyurethane, filled

+40

+N

Slightly conductive. (8 T ohm cm).

Magnesium fluoride (MgF2)

+35

+N

Anti-reflective optical coating.

Nylon, dry skin

+30

+N

Skin is conductive. Cannot be charged by metal rubbing.

Machine oil

+29

+N



Nylatron (nylon filled with MoS2)

+28

+N



Glass (soda)

+25

+N

Slightly conductive. (Depends on humidity).

Paper (uncoated copy)

+10

-W

Most papers & cardboard have similar affinity. Slightly conductive.

Wood (pine)

+7

-W



GE brand Silicone II (hardens in air)

+6

+N

More positive than the other silicone chemistry (see below).

Cotton

+5

+N

Slightly conductive. (Depends on humidity).

Nitrile rubber

+3

-W



Wool

0

-W



Polycarbonate

-5

-W



ABS

-5

-N



Acrylic (polymethyl methacrylate) and adhesive side of clear carton-sealing
and office tape

-10

-N

Several clear tape adhesives are have an affinity almost identical to
acrylic, even though various compositions are listed.

Epoxy (circuit board)

-32

-N



Styrene-butadiene rubber (SBR, Buna S)

-35

-N

Sometimes inaccurately called "neoprene" (see below).

Solvent-based spray paints

-38

-N

May vary.

PET (mylar) cloth

-40

-W



PET (mylar) solid

-40

+W



EVA rubber for gaskets, filled

-55

-N

Slightly conductive. (10 T ohm cm). Filled rubber will usually conduct.

Gum rubber

-60

-N

Barely conductive. (500 T ohm cm).

Hot melt glue

-62

-N



Polystyrene

-70

-N



Polyimide

-70

-N



Silicones (air harden & thermoset, but *not* GE)

-72

-N



Vinyl: flexible (clear tubing)

-75

-N



Carton-sealing tape (BOPP), sanded down

-85

-N

Raw surface is very + (see above), but close to PP when sanded.

Olefins (alkenes): LDPE, HDPE, PP

-90

-N

UHMWPE is below. Against metals, PP is more neg than PE.

Cellulose nitrate

-93

-N



Office tape backing (vinyl copolymer ?)

-95

-N



UHMWPE

-95

-N



Neoprene (polychloroprene, *not* SBR)

-98

-N

Slightly conductive if filled (1.5 T ohm cm).

PVC (rigid vinyl)

-100

-N



Latex (natural) rubber

-105

-N



Viton, filled

-117

-N

Slightly conductive. (40 T ohm cm).

Epichlorohydrin rubber, filled

-118

-N

Slightly conductive. (250 G ohm cm).

Santoprene rubber

-120

-N



Hypalon rubber, filled

-130

-N

Slightly conductive. (30 T ohm cm).

Butyl rubber, filled

-135

-N

Conductive. (900 M ohm cm). Test was done fast.

EDPM rubber, filled

-140

-N

Slightly conductive. (40 T ohm cm).

Teflon

-190

-N

Surface is  fluorine atoms-- very electronegative.
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