MAMUSTANG ATLASTHE ENTHUSIAST'S REFERENCE

2016 workshop · Body & Paint

Plastic Repairs

501-25 Body Repairs - General Information

2016 MustangReference 2,187 / 6,619HTML edition
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Plastic Repairs — original illustration 1, reference 2187Original colors & callouts · Select to enlarge

Item

Description

Material

1

Rear spoiler

Polypropelyne (PP)

2

Luggage compartment lid moulding

Polypropelyne (PP)

3

Rear bumper cover

Thermoplastic olefin (TPO)

Repair Considerations

Several considerations will determine viability of plastic repair procedure(s):

Is the damage cosmetic or structural? Can the repair be carried out on the vehicle? Is the part readily available? Is component repair the most cost effective method? Will the repair provide for the fastest, highest quality repair?

Several types of plastic are in use for automotive application. However, all plastics will fall into 2 primary categories of thermoplastic or thermosetting plastic.

Thermosetting Plastic

Generally, thermosetting plastics are made with 2-part thermosetting resins. When mixed together, heat is generated, producing a cure that is irreversible. Because of this, thermosetting plastics will require the use of a 2-part adhesive for repair.

Sheet-Molded Composite (SMC):

Sheet-Molded Composite (SMC) is a type of thermosetting plastic that uses glass fibers or nylon fibers in combination with thermosetting polyester resins. When fully cured, Sheet-Molded Composite (SMC) is strong and rigid. Sheet-Molded Composite (SMC) is similar to, but not identical to fiberglass. Ford Motor Company uses Sheet-Molded Composite (SMC) in components such as fenders, hoods and liftgates.

Thermoplastic Compounds

Thermoplastic compounds are manufactured by a process that is reversible. Thermoplastics can be remolded repeatedly by reheating. This characteristic of thermoplastics makes plastic welding a possible repair alternative. A repair of thermoplastic compounds is still possible through the use of a 2-part adhesive and filler repair materials and reinforcements as needed. Thermoplastics are widely used in interior trim components, wheel flares, body side cladding and bumper covers.

Source reference 2187

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.