High temperature test is a reliability test to simulate the high temperature resistance of products during storage, assembly and use. High temperature test is also the longest accelerated life test. The purpose of high temperature test is to determine the adaptability and durability of military and civil equipment and parts during storage and operation under normal temperature. Confirm the performance of the material at high temperature.
Scope of application
The high and low temperature test mainly covers electrical and electronic products, as well as their raw devices and other materials. The severity of the test depends on the temperature and duration of the high and low temperature test. High and low temperatures may overheat the product, affect the safety and reliability of use, and even damage, such as:
Due to the different expansion coefficients of various materials, the bonding and migration between materials are caused
Change material properties
Reduce the electrical performance of components
The elastic or mechanical properties of elastic elements reduce the strength and shorten the service life of products
Accelerate the deterioration and aging process of polymer materials and insulating materials and shorten the service life of products.
The elasticity of flexible materials such as rubber decreases and breaks;
The brittleness of metals and plastics increases, resulting in cracking or cracks;
Make materials brittle, such as plastic and steel are prone to embrittlement damage at low temperature, rubber material hardness increases, elasticity decreases, etc
Method standard
Test standard reference: GB / T 2423.1, GB / T 2423.2, IEC 60068-2-1, IEC 60068-2-2, en 60068-2-1, en 60068-2-2, etc.
Test parameters
High temperature test: test temperature, test time and heating rate;
Performance impact
High temperature test: material thermal aging, cracking, discoloration, softening, melting, expansion, or functional failure;
