How do white goods yellow? 4 teach you to restore yellow plastic

1 toothpaste, face cream test back to the top [PConline talk] This is the case. Over the weekend, K powder brother of the appliance channel invited Xiao Bian to sit at his home. However, when I entered the door, I was attracted to the yellow air-conditioner in his house. K-Pink brother liked the yellow thing. Even the air-conditioners used it so yellow! However, this is a good opportunity to mock him! “K, I’m a man like a banana. Although it looks yellow, it’s white inside. And you’re the mango, it’s yellow outside, and it’s yellow, you see this. air conditioning." "P, you are a pineapple. The outside is yellow. The inside is yellow. The head is still green! The labor-powered air-conditioner was originally white, so it becomes yellow when used." Send a circle of friends to collect pictures, found that yellowing appliances are quite a lot Xiaobian I made a circle of friends and asked for photographs of appliances that turned yellow. As a result, I received 6 photos in less than 5 minutes. It seems that white goods are turning yellow. It is a very common phenomenon. As a serious responsible (manually funny) appliance Xiao Bian, we decided to find a correct posture for everyone to “return to old age”. Of course, K pink brother is not willing to experiment with his air conditioning, and air conditioning removed is not convenient. Therefore, in the corner of the home appliance channel, this year's air-conditioned fan eating gray has another chance to play. Going to the Internet to search for a bit, there are quite a few methods, but roughly divided into two kinds of physical and chemical, so we picked several kinds of seemingly reliable test. Just like the sulphuric acid bubble method. . . Yellow like a dog Option 1: toothpaste + toothbrush In order to enhance the effect, we chose a toothpaste with a relatively high friction coefficient, aiming at a position, and desperately brushing. After a few minutes, look at the effect. The surface seems to be useful Option 2: Whitening Cleanser Cleansing milk can whiten the skin. Is it also possible to whiten plastic? According to the method of washing our face, we covered the cleansing milk by hand, and then gently stroked the surface of the air-conditioning fan. Wash your face with milk After a few minutes, look at the effect. It seems to have a little effect on the surface However, is it apparently useful? After we wiped off the toothpaste and cleanser on the surface, did the cleaned part really turn white? We continue to look back! 2 steel ball, plastic yellowing agent test back to the top Scenario 3: Rub with a steel wire ball I heard that this air-conditioning fan was left behind by people who had not been with the company a few years ago. No one wants it, so we can brush it as hard as we can! Hard! However, when we wash it clean with fresh water and a cleanser. I finally learned what I called the egg Well, the first two methods seem to be useful on the surface, but in fact they did not play any role. Some things, a single yellow, it is not so easy to come back. Option 4: Plastic Decolorizer In the end, this was Xiao Bian's plastic yellowing agent found on a certain treasure. He said that the product introduction and the buyer's evaluation all said that the effect was superior, so he resolutely bought a bottle and returned. He only spent 14 pieces of 8, and here we take a look. This stuff is not as good as the legend. Due to the urgent use of the seller, the seller received the order the next day after the order was placed. The packaging was unpacked and contained a bottle of yellowing agent, a sprayer, gloves given by the seller, and a piece of cloth resembling a dish cloth. s things. The detailed instructions for use are on the back of the yellow agent bottle. According to the instructions on the back of the yellowing agent, we also need to prepare a large package of paper towels and cling film. First of all, wearing gloves, this sentence repeated three times in the instructions above, so we must pay attention. If you inadvertently come into contact with the skin, the exposed area will turn white and wash immediately with clean water, which is somewhat similar to the reaction with hydrogen peroxide. I accidentally got the solution to the stone and reacted! Then the yellowing agent is evenly sprayed on the plastic surface, then covered with a layer of paper towels, and then sprayed once on the paper towel. Finally, the whole air-conditioning fan is wrapped with a plastic wrap and pushed into the sun for 5-8 hours. If the conditions are inconvenient, you can also leave it in the room for a few days. The effect is the same. (To do this, there are still photos of the sun have died, for high temperature subsidies!) After 4 hours of exposure, we tore off the cling film and paper towels, wipe off the yellow agent and see the effect. What the hell! Actually really useful! However, I do not know if this yellowing agent can make K Pinker’s heart whiten. The way to estimate the score of each toothpaste facial cleanser steel ball yellowing agent 0 0 0 6 Although the yellowing agent works well, due to its unpleasant odor and troublesome use process, we will give it a pass for the time being. After all, the others are zero points, which is already very high. Popular Science Time: We know that plastic is a polymer material. In the long-term use process, UV, oxygen, temperature and other environmental factors will make it aging, the polymer backbone breaks and generates hydroxyl groups, hydroxyl is a chromophoric group, so the plastic surface will slowly turn yellow. If exposed to sunlight for a long time, it will be yellow faster. If you want it to turn white, the physical method is to erase the surface of the yellowing layer by scraping, but this will cause more damage to the plastic, even if it turns white successfully, it will make it full of scratches; the chemical method is to use oxidants. Plastic reduction, this method is more thorough, the damage to the plastic surface is relatively small, in theory, plastic yellowing agent can also be used for white mobile phones and other plastic materials items, but if used on mobile phones, pay attention to prevent liquid infiltration into the phone Cause damage. Note: The yellowing agent on the market is a strong oxidant. Even if it is contained in a bottle, it will react with sunlight and decompose spontaneously and generate gas. Therefore, when opening the bottle, be careful not to aim the bottle at anyone. Wear protective gloves, glasses, and other protective equipment when you use it. Be sure to put it out of reach of children. The long-term preservation of the generated gas may cause the bottle to burst. If it is not used up, it is recommended to throw away the rest. Be sure to read the instructions carefully before use! I am the sea, we see you next time!