When it comes to convenience, the plastic bag is convenient, it looks clean, no matter what, just pick it up and go. But as people learn more and more about plastics, understand that plastics have a huge impact on the environment, and there are more and more restrictions on plastic products in the world, then, in order to replace plastics, look for degradable, convenient and practical packaging materials. , people have turned their attention to paper again. Paper is environmentally friendly and degradable. It is one of the great inventions of mankind, but paper has many shortcomings. For example, paper is easy to get wet, paper is easy to penetrate, and paper is easy to break. For the shortcoming that paper products are easy to break, it is actually easy to solve, we can thicken the paper. But it is easy to get wet and easy to penetrate these shortcomings. Is there a solution? You see, if we use paper to pack some food, the paper will become greasy and greasy in a short time, and the paper will be torn after a while, or even if the paper is not torn, the oil will seep out from the back of the paper, and you can touch it with one hand. of greasy.
With the advancement of nanotechnology, we can consider making nanocoatings on paper. Nano-coating has the advantages of waterproof, hydrophobic, oil-proof, oleophobic, anti-penetration, anti-corrosion, acid and alkali resistance, hardening, brightening and so on. If we make nano-coating on paper, can we solve the problem that paper is easy to penetrate and get oily? We applied nano-coating on one side of ordinary printing paper, but not on the other side. After dripping edible oil on the paper, we found that the paper with nano-coating did not penetrate into the oil without coating. surface, the oil stains have soaked the paper surface. The penetration of paper to oil pollution plays a role in protection and has anti-oil pollution performance. Let's look at the persistence test again. After two hours, the coated paper surface, the oil still does not penetrate to the back of the paper. The nano-coated paper has oil-proof properties, and oil is no longer easy to penetrate. We poured the oil out of the paper, and no oil stains were left on the paper. The nano-coating is colorless and transparent. It does not affect the texture of the paper when it is applied on the paper. Visually, the coated paper will have a little color difference, as if the paper has been wet. Other places are no different, so the obvious effect of our oil-proof and water-proof coating comes out.
