Mitsubishi MOTORS Lancer Evolution VIII 2003, Техническое руководство, Страница: 239 / 368

BODY REPAIR
BASE OF BODY REPAIR
9-35
HOW TO DISTINGUISH TYPES OF PLASTICS
M4090017000013
There are various methods that can be employed to
determine types of plastics, among them (1) using a
chemical solvent, etc., to check it chemically, (2)
scratching the material to determine its make-up, (3)
cutting of a small piece (where the scar can't be
seen) and burning it to judge by the way it burns, etc.
The following is an outline of the burning method,
which is a relatively simple method.
PLASTIC NAME ABBREVIATION FLAME COLOR COMBUSTION CONDITIONS SELF-EXTINGUISHING ODOR
Polyvinyl chloride PVC Yellow flame top
Blue flame bottom Burns to black residue Yes Irritating acid
odor
Polyethylene PE Yellow flame top
Blue flame bottom Burns cleanly while
melting No Candle-like odor
Polypropylene PP Yellow flame top
Blue flame bottom
•
Burns briskly and
drips
•
Slight white smoke
No Petroleum-like
odor
Polyurethane PUR Orange Crackles as burns; drips No Rubber odor
TRUR Orange
Polycarbonate PC Yellow Cinders remain To some
extent Sweet odor
Polyamide
(nylon) PA Yellow flame top
Blue flame bottom Melts and drips Yes Strong formic
acid odor
Polyester resin UP Yellow Ashes remain No Styrene odor
Glass-fiber-
reinforced plastic FRP Yellow Ashes with glass-fiber
remnants remain No Differs according
to plastic type
Phenol resin PF Yellow Ashes remain Yes Formalin odor
ABS resin ABS Orange Burns accompanied by
foaming and black
smoke No Rubber odor