A polymer whose molecular backbone contains aliphatic esters. In other words, the parent nucleus R of the dihydroxyl compound HO -- R -- OH is polycarbonate of aliphatic group (CH2) M, (CH2)O(CH2), -- CH2 -- C(CH3)2 -- CH2 -- etc. It is characterized by low melting temperature, mostly below 60℃, and narrow melting range, greater solubility, low mechanical strength, hydrophilic, poor thermal stability, low glass transition temperature. Most aliphatic polycarbonate have low molecular weight and are mostly viscous liquid at room temperature or microcrystalline substance at low melting temperature. It can be prepared from aliphatic dihydroxyl compounds with dicarbonate or photogasification. Most of them have little industrial value, so their application is very limited. Aliphatic Polycarbonates Apc,Rigid Bioplastics Aliphatic Polycarbonates Apc,Adhesives Aliphatic Polycarbonates Apc,Binders Aliphatic Polycarbonates Apc Xingbang High Molecular Materials Co., Ltd. , https://www.chemicaladditive.com
Then, Langfang Jiacheng Supermarket Shelf Factory summed up several small methods for derusting of supermarket shelves.
1. Shot blasting: This method is to use high-speed impeller, abrasive to the shelf surface, remove the rust stains on the surface of supermarket shelves;
2. Sandpaper: If the rust on the surface of supermarket shelves is not particularly severe, sandpaper can be used for grinding. After polishing, the surface of the shelf can be effectively protected from corrosion.
3. High-pressure water rust removal: washing the surface of the shelf with high pressure water can completely remove the surface rust stains and stains. This method is not only simple, but no dust pollution, but will not damage the surface of supermarket shelves, very practical and effective;
4. Grinding: The grinding machine is used to grind the surface of the shelf.
Supermarket shelves rust after the correct way to deal with!
The supermarket shelf is a core component of a supermarket. Its existence is not only used to display goods, but also relates to the overall beauty of the supermarket. This is also a key to attracting customers. So what happens if the supermarket shelves are rusted? We must know that the rust on the supermarket shelves has greatly affected the image of the supermarkets. When customers see the shelves rust, they will lose the desire to purchase goods. Therefore, the rust on the supermarket shelves has a serious impact on the overall operation of the supermarket. It is necessary to learn to remove rust.