White plastic for a long time. Why does it turn yellow?
So, want to make white plastic use more longer, try to avoid bright light, if and food related, try to use transparent colorless plastic. If you want to cure this phenomenon, you can add a certain smooth stabilizer.
Common reason is that because of the aging of plastic products produced, the reason is polypropylene exists on the flank attack, its stability is not very good, especially in the long time of drying conditions
The plastic box production after or after using for a long time are yellow because the material used in aging, or perhaps because produced after degradation, the most serious of this phenomenon is that some white plastic box, such as some white box, plastic barrels and so on.
There are plastic products called plasticizers of raw materials, mainly plays the role of anti-aging, but it will be volatile in the air, so when increased when plasticizer reduced, the color will also fade, the elastic plastic shriveled, becomes very brittle, it will turn yellow.
