PUR GF 20 1

[MiniCooper]

Hello, I apologize if this is posted in the wrong forum. I see this is for engineers, etc. I am not an engineer. I am in the process of attempting to repair a plastic panel on my wife's car. I'm buying a "plastic-welding" machine, but in order to use it properly I must identify the type of plastic.

It is: PUR GF 15. I know what PUR is (Polyurethane Resin), but don't understand, nor can I find any info anywhere, on the GF 15 part. I have read that not all PUR can be welded, can anyone help? Thanks, and sorry if this is the wrong place to ask. I don't know where else to go.

 

[GregLocock]

could well mean that the resin has a 15% glass fibre content, which will not affect its welding properties much.

Cheers

Greg Locock

SIGlease see FAQ731-376 for tips on how to make the best use of Eng-Tips.

 

[MiniCooper]

Ahh yes, that makes perfect sense. Thanks for the tip.

 

[patprimmer]

Greg is correct.

PU has 2 types, thermoplastic and thermoset. Only thermoplastic types can be welded with heat. A simple test is to heat a small piece of the plastic and see if it melts first or just degrades. Take care as degraded PUR produces cyanide gas.

Regards

eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[MiniCooper]

Very good. I had read that not all PUR could be welded, but didn't know how to tell the difference. Also, thanks for the safety tip with the thermoset. Much appreciated.

 

[patprimmer]

Ummm

Both types will produce Cyanide if degraded, so avoid smelling fumes from either type when heating them.

Regards

eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.