As to how much influence the lifting belt coefficient has on the actual lifting, you can understand it as follows. All lifting belt test data are static load test. It’s a process that mimics lifting. All the external factors are not present during the test. But when we actually use it. These are inevitable.
For example: 1. The wind speed will cause the hanging object to shake, and the hoisting Angle will be related to the hoisting belt. Different hoisting methods, its large working load is not the same. 2. In the process of lifting, the operator suddenly stops, and in the process of stopping, the weight of the suspended object will be increased rapidly. Originally carrying two tons of lifting belt, the lifting of goods suddenly reached the weight of 5 tons. If there is no guarantee of coefficient, then the consequences are unimaginable.Endless Lifting Straps
Propylene is CH2=CH-CH3, and polypropylene is a high polymer of propylene. And we use polypropylene, Endless Lifting Straps not propylene, to make the lifting belts. But we deserve to know the dangers of propylene. Propylene and chlorine and water addition reaction, generate 1 – chloro – 2 – propanol, the latter reaction with bases to form epoxy propane, add enough water to produce propylene glycol propylene in the presence of acidic catalyst reaction with benzene, generating isopropyl benzene C6H5CH (CH3) 2, it is raw material for the synthesis of phenol and acetone propylene in the presence of catalyst and compound hydrogen and oxygen in the air oxidation reaction, generate acrylonitrile, It is the raw material of synthetic plastics, rubber, fiber and other polymers.
Propene is chlorinated at high temperature to produce allyl chloride CH2 = CHCH2C. Propene reacts with sulfuric acid to produce isopropyl sulfuric acid. The latter hydrolyze acute toxic propene with anesthetic effect and cardiovascular system toxicity than ethylene. At 40% ~ 50% inhalation, mice, rats, cats and dogs are anesthetized, Endless Lifting Straps which is characterized by rapid onset and disappearance of the anesthetic effect. When the concentration is 20% ~ 50%, both dogs and cats can cause ventricular premature beats and tachycardia. When the cats inhaled a mixture of 65% propylene and 35% oxygen, their blood pressure dropped. At a concentration of 70 to 80 percent, both dogs and cats die rapidly due to a drop in blood pressure, heart failure, and respiratory arrest.
Post time: Oct-26-2022