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Panel Beating > Thermoplastic body panels > Flashcards

Thermoplastic body panels Flashcards

1
Q

What Bumper Covers are commonly made from?

A

They are made from Phydropline

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2
Q

How can a Rim part be repaired?

A

It can be repaired using plastic repair adhesives or by Welding repairs.

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3
Q

What is an ISO Code?

A

An ISO code is a standard set of letter codes that identify the type and blends of plastic.

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4
Q

How can An ISO code be moulded ?

A

An ISO code can be moulded into the back sider of the part in an unseen area.

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5
Q

When should you use backing (rainforcement) material?

A

Backing reinforcement material should be used on any two sided repair especially when it is in an area that can flex.

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6
Q

True or False

Fillers used for plastic repairs have good sanding characteristics

A

True

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7
Q

How can Flexible plastic polyester fillers be used

A

Flexible plastic polyester fillers can be used only to fill minor scratches or gouged on plastics

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8
Q

Why should you not use metal Body Fillers or metal polyester Glazer on plastic?

A

As they are not designed for use on plastic parts they also lack the correct flexibility needed on plastics.

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9
Q

How can you install the static mixer and dispense

A

You may be able to install the Stacie mixer by using a bead of product through the static mixer before application of the product

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10
Q

What tests or methods can we use to find the type of plastic on a front bumper bar or plastic panel when the ISO code is removed?

A

Float test or/and burn test

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11
Q

How can we found out the type of plastic a panel is when we’ve removed it and can visibly access the front and rear of the panel?

A

The ISO code written somewhere on the backside of the panel

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12
Q

What can you use the NITROGEN HOT AIR welder for and the standard HOT AIR welder for?

A

Thermo plastic welding and bonding of plastic pieces together.

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13
Q

What technique would you use to apply plastic filler rod to a damaged panel?

A

The melt flow technique; this technique is to preheat the panel and plastic filler rod and then melt the rod into the panel.

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14
Q

What will happen if you DO NOT clean the welding shoe before or after use?

A

It will CONTAMINATE plastics from the welder shoe to the plastic panel from previous use of the plastic welder on a different plastic type.

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15
Q

When cleaning the welding shoe you use P220 SANDING PAPER when the tip is hot. True or false?

A

TRUE; while the shoe is hot it is easier to clean the hot plastic from the shoe efficiently to clean and the remaining plastic that is to small will melt onto the sandpaper.

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16
Q

The rod adhesion test. When melting a rod to a panel after cleaning and roughing an area, how can you find out if that rod is perfect for the panel?

A

The rod will either stick to the panel meaning it’s perfect and if it won’t stick at all it’s the wrong sort of plastic rod for the panel.

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17
Q

How would you know the difference between POLYOLEFIN plastic panel and a NON-POLYOLEFIN plastic panel with a sanding test?

A

When both are sanded POLYOLEFIN will either smear, melt or become greasy. A NON-POLYOLEFIN will usually become powdery dust when sanding.

18
Q

Welding equipment. What is the difference between a NITROGEN HOT AIR welder and a regular HOT AIR welder in terms of welding?

A

The NITROGEN HOT AIR welder creates a shield using the gas and the compressed air, whereas the HOT AIR welder has no shield to protect the work.

19
Q

Why there should be no paint in the repair area.?

A

The adhesives stick to plastic now paint.

20
Q

What dus overspray do?

A

There will be a week bond to the part.

21
Q

How do you hold a two sided repair together?

A

Aluminum tape or body tape or cyanoacrylate.

22
Q

Why should melted or smeared plastic be sanded.?

A

The repair material won’t stick to shiny plastic.

23
Q

Pinning method

.should you keep all of the holes within the repair taper?

A

Yes

24
Q

How far should the holes be spaced?

A

Evenly spaced about 1/4 -1/2”apart.

25
Q

What happens if you have to heavy adhesion primer?

A

It may cause adhesion problems.

26
Q

The adhesion promoter should make the plastic dull and not glossy?

True or false

A

True

27
Q

Why do you not intermix an adhesion promoter from another plastic repair system?

A

Some are made for urethane materials others are made for epoxy materials.

28
Q

What does FRP stand for?

A

Fibre Reinforced Plastic Repair

29
Q

Why can’t sheet moulded compound be repaired with fibreglass repairs or plastic welding?

A

Fillers and and mould release agents cause adhesion problems with with fibreglass repair materials

30
Q

True or false:

Sheet moulded compound (SMC) can’t be welded because it is a thermoset.

A

True

31
Q

True or false:

Adhesion promoters and pinning are not used for FRP repairs.

A

True

32
Q

What can be used as backing for two sided FRP repair?

A
  • scrap of same material
  • fibreglass cloth
  • backing tape
33
Q

Why is it important to tape off exposed fibres using wax and grease remover?

A

If they are not taped, the fibres can wick the solvents and trap them under the repair materials.

This can lead to de-lamination.

34
Q

What do you need to do when sanding the front side of repair?

A
  • block sand
  • clean with dry cloth or vacuum
  • check for pin holes
  • glaze coat
35
Q

What problems are there with carbon fibre repairs?

A
  • if damage is on the edge cannot be repaired

- cannot be buffed if goes through the clearcaut on tool faced surfaces

36
Q

True or false:

Carbon fibre dust can short circuit electric tools because it conducts electricity

A

True

37
Q

True or false:

carbon fibre dust is dangerous to breathe in

A

True

38
Q

True or false:

Exposed carbon fibre can cause erosion, but putting it in resin can fix this problem

A

True

39
Q

True or false:

you need to check for other damage when repairing carbon fibre.

A

True

40
Q

Can you use SMC repair material/methods to fix carbon fibre?

A

Yes

41
Q

Can you use a pyramid patch o repair carbon fibre?

A

Yes

Panel Beating (2 decks)

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