This also applies to glass-reinforced products. Humidity control involves a certain amount of cost, and humidity control is necessary only if the high rigidity or dimensional stability of the polyamide must be ensured from the outset. On the other hand, if the parts are to be conditioned, for example, in a humid room (40 ° C / 90% relative humidity) or immersed in water (40 ° C), a balance of moisture content can be achieved in a short period of time. Therefore, without humidity conditioning, the moisture content balance is reached after a very long period of time, after which the final dimensions will be fixed. Reinforcing PA66 - Under normal conditions, PA66 components absorb water extremely slowly from the air, especially when it has a thick wall. Therefore, the use will be subjected to high elastic deformation and high impact load. If water absorption occurs under the conditions of use, the change can have a negative effect on many applications. Water absorption increases the characteristics and dimensional changes of dry polyamide parts. However, in practice, only the moisture content balance at 23 ° C / 50% relative humidity is of practical significance. Unless the part is always soaked in water, the moisture content will not reach its maximum. It is also possible to adjust the moisture content of components to equilibrium values under other climatic conditions (given temperature and relative humidity). The standard operation is to adjust the moisture content of the part to an equilibrium value in a standard laboratory environment (23 ° C / 50% relative humidity). Humidification of dry PA66 parts is intended to make it absorbent as soon as possible. At this point, in addition to the need to meet the specific dimensions and other exceptions, the adjustment process does not make any sense. However, the wet conditioning process has little effect on the new injection molded PA66 parts and therefore does not need to be done. Polyamide 6, polyamide 66, and copolyamide 66/6 have a relatively large amount of water absorbed, and therefore, humidity control treatment must be performed. Under accelerated conditions, such as humidity control, they can absorb a certain amount of moisture in a very short period of time, thus improving various characteristics of molded products, such as impact strength and so on. If exposed to damp air or immersed in water, these molded articles will absorb water and their rate of water absorption will depend on the specific conditions in which they are placed. Reinforced PA66 - Polyamide PA66 material will completely dry after it is made. High energy efficiency is particularly suitable for finishing processes that have higher processing cycle requirements. If the processor uses high-flow materials, the processing temperature can be reduced, and earlier parts can be cast for two shots, saving energy and increasing production efficiency. This shortens the processing cycle by nearly 30%. The BASF test results show that lower processing temperatures are required for high flow production parts and faster demolds for cooling allow parts to be removed from the mold faster. As the mold difficulty decreases, the number of injections is reduced accordingly, allowing the use of fewer expensive hot runner nozzles. As the high mobility of PA66 with more excellent mobility, the basic can achieve long flow path. There are two benefits to doing this: reduced cycle times increase productivity, and lower energy consumption for injection molding. More excellent fluidity also means lower injection temperature. As we all know, a larger injection molding equipment, the higher the operating costs therefore, high liquidity materials can create higher value for manufacturers. Therefore, the processor can choose smaller equipment production parts. High fluidity means less pressure to inject or fill and less clamping force. Among all other properties that are close in performance, materials with good flowability are preferred over conventional materials with low flowability in injection molding. Reinforced PA66 - Improved fluidity reduces the processing time, cost and energy consumption of PA66 and other thermoplastic materials.
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