The problem of temperature of blow molding machine in production
We are always concerned about the problem of temperature during the production of the blow molding machine, but if we cannot master the skills and methods well, it will affect our later use. Therefore, we might as well do the right work. , then let's briefly analyze it. (1) Melting temperature TM: For crystalline polymers, it refers to the temperature at which the three-dimensional long-range ordered state of the macromolecular chain structure transforms into a disordered viscous-fluid state, also known as the melting point. is the lower limit of the molding processing temperature of the crystalline polymer. (2) Glass transition temperature TG: refers to the transition temperature of amorphous polymers (including non-crystalline parts in crystalline polymers) from a glass state to a highly elastic state or from the latter to the former. It is the minimum temperature for the free movement of the macromolecular segments of the amorphous polymer, and also the upper limit of the working temperature of the blow molding machine.>Aluminum plate spot welding machine (3) No flow temperature: the highest temperature at which no flow occurs under a certain pressure. It is to add a certain amount of plastic into the barrel at the upper end of the die of the capillary rheometer, heat it to a certain temperature, and keep the constant temperature for 10 minutes, then apply a constant pressure of 50MPA. Raise the difficulty by 10 degrees, keep the temperature for 10 minutes, and then apply a constant pressure of the same size. This continues until the melt flows out of the die. The blowing machine reduces this temperature by 10 degrees, which is the no-flow temperature of the material. (4) Flow temperature TF: refers to the temperature at which the amorphous polymer changes from a highly elastic state to a viscous flow state. It is the lower limit of the processing temperature of amorphous plastics. (5) Decomposition temperature TD: It means that when the temperature of the polymer in the viscous flow state is further increased, the degradation of the molecular chain will be intensified, and the temperature when the polymer molecular chain is significantly degraded is the decomposition temperature. When the plastic blow molding machine is in use, if you can master some operation methods and skills, it will not only help the use effect, but also improve the service life.
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