PEI with good dimensional stability
PEI (polyetherimide) is a high-performance engineering plastic that plays an important role in many fields due to its excellent dimensional stability.
PEI has low moisture absorption, which allows it to maintain a relatively stable size in different humidity environments. Compared to many other plastics, PEI absorbs very little moisture and does not undergo significant expansion or contraction due to changes in environmental humidity. In fields such as precision instrument manufacturing and electronic equipment that require high dimensional accuracy, this characteristic of PEI is particularly critical. For example, in the manufacturing of electronic component casings, dimensional stability can ensure precise installation and normal operation of the components.
Meanwhile, PEI also has a low coefficient of thermal expansion. This means that the size change of PEI is very small when the temperature changes. Whether in high-temperature industrial production environments or outdoor application scenarios with large temperature fluctuations, PEI can reliably maintain its size. For example, in the aerospace field, components need to operate under extreme temperature conditions, and PEI's low thermal expansion coefficient ensures its dimensional stability and guarantees the safety performance of the aircraft.
In addition, PEI itself has high strength and rigidity, which also helps it maintain good dimensional stability. PEI is less prone to deformation when subjected to external forces or loads, ensuring the accuracy of its dimensions.
In summary, PEI with good dimensional stability is widely used in various fields such as electronics, aerospace, and medical due to its low moisture absorption, low thermal expansion coefficient, and high strength and rigidity, providing reliable material support for the manufacturing of various high-performance products.
