Polypropylene is liable to chain degradation from exposure to UV radiation such as that present in sunlight. Oxidation usually occurs at the secondary carbon atom present in every repeat unit. A free radical is formed here, and then reacts further with oxygen, followed by chain scission to yield aldehydes and carboxylic acids. In external applications, it shows up as a network of fine cracks and crazes which become deeper and more severe with time of exposure."
I don't know what plastic they are made of but in terms of using them I will not suggest it because I've tried using the older and thicker prepaid cards, you can only use them on areas that is not used or seen a lot like covering open spaces in an 1/100 HG kit. But in terms of using it elsewhere where you need glue, don't bother, this plastic don't stick properly with plastic model glue and the other glue will do more harm than help you with your kits' plastic.
Try going to Lil's, they have different gauges of the white styrene which is preferred by most modders.
You're right, bro. I've tried using these prepaid cards and you have to sand it and wipe lacquer thinner with a piece of cloth or whatever have you to make super glue (talking about "super" it's really not super after all) adhere. But if you want to break the two pieces apart you may still do so without much effort. It's good to use them in places where you will not put tension or else it might come off.. Last time I ask somebody to STC they don't have stocks of styrene. I'll have it checked at Lil's. By the way anybody can tell me the thickness of these prepaid cards?
If you're in Manila you can go to Lil's in Megamall and Park Square 1 Makati, or the hobby shop in Ali Mall Cubao. Thickness varies thus price vary a lot specially when it's a thick styrene. The cheapest are the tubes and I Beam types (because they were basically designed for architectural models and not Gunpla.
I don't know if GT supplies them but due to recent events of supplying modeling stuff, you may want to ask them.
boris: WOW! wala ng tao ata dito
Sept 24, 2014 23:57:05 GMT 8
mechapunk: seems like it. a far cry when it was a fresh board in 2001. we started with just Malvin,me, omni x, and oliver. then it rose to about a hundred members, lurkers and the like. now it is a Ghost town.
Oct 2, 2014 19:49:27 GMT 8