What are the effects of temperature on the performance of MY10 Low viscosity PBT (Injection molding application)

MY10 low viscosity polybutylene terephthalate (PBT) is a crystalline saturated polyester material with excellent performance, which is widely used in automotive parts, electronic equipment and other fields. The optimization of its injection molding process is crucial to improving product quality and performance.

In terms of processing temperature range, the applicable temperature of MY10 low viscosity PBT is usually between -40℃ and 425℃. This range provides great flexibility for the injection molding process, enabling stable processing performance under different production environments. Although the melting point of PBT is about 260℃, it can still maintain good performance under high temperature conditions, reflecting its excellent high temperature resistance.

Barrel temperature is one of the key factors affecting the fluidity of MY10 low viscosity PBT. Properly increasing the barrel temperature can significantly enhance the fluidity of the melt, ensuring that the melt can effectively fill the mold cavity, thereby obtaining a uniform and complete injection molded product. However, excessively high barrel temperature may cause material degradation or bubble generation, which in turn affects the mechanical properties and appearance quality of the product. Therefore, it is crucial to reasonably control the barrel temperature to ensure that while maintaining good fluidity, material degradation is avoided.

Mold temperature also plays an important role in the cooling rate and crystallization behavior of MY10 low viscosity PBT. Lower mold temperature can accelerate the cooling process of PBT, thereby improving the dimensional stability and mechanical properties of the product. Rapid cooling helps to reduce the shrinkage and deformation of the material during the cooling process and ensure the dimensional accuracy of the product. However, too low mold temperature may lead to surface defects or increased internal stress of the product, which will directly affect the service life and reliability of the product. Therefore, during the injection molding process, precise control of mold temperature is particularly important.

Injection pressure is also an important parameter affecting the injection molding of MY10 low viscosity PBT. Properly increasing the injection pressure can improve the filling capacity of the melt and make it easier for the material to fill the mold cavity. However, too high injection pressure may cause surface defects or increased internal stress of the product. Therefore, in actual operation, the injection pressure should be reasonably adjusted according to the specific requirements of the product and the mold structure to ensure the stability of product quality.

In addition, temperature also has a significant effect on the crystallinity of MY10 low viscosity PBT. Crystallinity is a key factor in determining the mechanical and thermal properties of materials. An increase in barrel temperature usually leads to a decrease in the crystallinity of PBT, thereby affecting the mechanical properties of the material. Therefore, during the injection molding process, multiple factors such as barrel temperature, mold temperature, injection pressure, etc. must be considered comprehensively to optimize the crystallization behavior of the material and ultimately obtain products with excellent mechanical and thermal properties.