Recently, there are always users complaining about the poor quality of safety shoes issued by the company on BBS and weibo. They will be discarded after a month of wearing, and the situation of glue breaking and aging can be found.The editor inquired in detail and found that the mistake was not in the company's safety shoes, but in their function.
Most of these complainers work in places with acid and alkali, and the acid-resistant and alkali-resistant safety shoes equipped by their companies are all qualified products produced by regular manufacturers after verification by the editors.The service life of safety shoe of general be able to bear acid alkali is 3 months change, so why can you appear to use a month to discard the case?This is because they forget the "resistance" word of acid-alkali resistant safety shoes.Chinese culture is extensive and profound. If you look it up in the dictionary, you will find that "endure" means "to be able to bear or endure".From the perspective of the editor, "patience" has a certain range and no absolute meaning. When it reaches a certain limit, it will fall apart.And be able to bear acid alkali safety shoe is defined for this name, also have same sense probably.
How to choose the right safety shoes in an acid-base situation is a paste for many people.Look at sole above all, the personage of the industry knows, at present the material of safe shoe is PU/TPU, rubber mostly.Under acidic conditions, there is no problem with PU/TPU, which has the function of anti-hydrolysis. However, if it is soaked in acid solution for a long time, it will have a certain impact, and it is not recommended to use in the case of strong acid.However, under alkaline conditions, safety shoes with PU/TPU material as sole cannot be selected, because OH will accelerate its hydrolysis.In general, PU/TPU will have a certain resistance to weak alkali, but it should be judged according to the specific situation.Therefore, the best choice is not to choose safety shoes with PU/TPU material as the sole when working with alkaline solution.The safety shoes with rubber soles have better acid and alkaline resistance, but the safety shoes with this kind of soles are relatively bulky, and although rubber has good acid and alkaline resistance, it is not recommended to use it under strong acid or strong alkali conditions for a long time, because such environment is corrosive after all.
Next, the habit that "bask in a shoe" also is the reason that causes safe shoe short life.Acid and alkali resistant safety shoes as a more closed footwear, wear a day inside will be sure to have a lot of sweat, take off and throw outside in the sun is a habit of many workers, but do not know acid and alkali resistant safety shoes is not drying.Although the shoes are comfortable to wear after being exposed to the sun, the direct sunlight will also accelerate the aging of safety shoes. In addition, if the shoes are not exposed to the sun, the concentration of acid and lye on the shoes will increase, causing further damage to the safety shoes.Correct clear method should be to use clear water to clear the acid-base liquid that gets stuck to on the shoe first, air next, cannot sunshine direct sunshine or dry.