Is Jiangmen engineering plastics affected by temperature
In recent years, more and more attention has been paid to the influence of humidity on polymer materials. One of the scenes is the influence of humidity on the reliability of equipment in the field of microelectronics and MEMS, such as swelling and deformation of materials, cracking and stress concentration. The second is the aging problem of polymer materials in engineering application, which will reduce the function of polymer materials.
Influence of humidity on engineering plastics
Therefore, the relative humidity of the material used in the outer surface is greater than 80% of the moisture content in the plastic film; When the relative humidity in the air is less than 50%, the moisture in the plastic will evaporate into the air, which will also change the function of the plastic, making some plastics brittle and crack.
The effect of humidity on the function of engineering plastics is the process of infiltration to absorption. At present, there are two aspects in the study of the influence of humidity on the structure and mechanical function of plastics. On the one hand, the material deformation and residual stress caused by the swelling caused by humidity are discussed, including the structural stress and interface stress caused by moisture infiltration, dispersion and uneven moisture content by means of constitutive or numerical simulation; On the other hand, the effects of humidity and temperature on the physical properties of plastics, such as strength, density, modulus and longevity, are discussed.
The influence of environmental humidity on the function of plastic machinery is significant. Generally, plastics that can absorb water are sex materials. These materials can form some kinds of bonds, which may be hydrogen bonds, such as nylon and other materials. On the other hand, moisture has no effect on polyethylene or polytetrafluoroethylene, and the function of these plastics is almost indolent with regard to changes in ambient humidity.
Source: Jiangmen engineering plastics http://www.kszwab.cn/
-
09-14
What kinds of Jiangmen engineering plastics have good thermal conductivity
What engineering plastics have good thermal conductivity? Most of the traditional thermal conductive plastics are thermal insulation materials. The thermal conductive plastics developed by Zhaoke company bring new key to this field. The commercial application of thermal conductive plastics began in 1998, and more than one million pieces have been made. The products have been successfully applied in various fields, such as consumer electronics, power electronics, cars, motorcycles, lighting, medi
-
09-14
What are the application fields of Jiangmen engineering plastics
Five major application fields: 1. Film materials: various kinds of food, medicine, non-toxic and aseptic packaging materials; packaging materials of textiles, instruments and electrical components; base materials of audio tapes, video tapes, film films, computer floppy disks, metal coated films and photosensitive films; 2; Electrical insulation materials, capacitor films, flexible printed circuit boards and membrane switches and other electronic and mechanical fields. 2. The application of packa
-
09-14
What are the thermal functions of Jiangmen engineering plastics
Engineering plastics have been widely used in our daily life as engineering materials and substitutes for metal manufacturing machine parts. In the selection of engineering plastics, the data engineer should consider not only the mechanical function and aging resistance function of the data, but also its thermal function. There are many tests on thermal function of engineering plastics. What do we need to know? 1. The continuous working temperature indicates the heat resistance of plastic moldin
-
09-14
What are the types of Jiangmen engineering plastics
Engineering plastics have the characteristics of high rigidity, small creep, high mechanical strength, good heat resistance and good electrical insulation, which make it can be used in harsh chemical and physical environment for a long time, and can replace metal as engineering structural materials. With the development of technology, the application of engineering plastics has been extended to cars, home appliances, aviation, sports, electronics, construction and other fields. PA is a kind of e