Your injection-molded pump housing cracks after 800 hours at 150°C in a caustic media. The glass-filled PA66 you specified holds shape, but the surface loses gloss and the dimensional tolerance drifts. This is the ...
LEIA MAIS +
Your injection-molded pump housing cracks after 800 hours at 150°C in a caustic media. The glass-filled PA66 you specified holds shape, but the surface loses gloss and the dimensional tolerance drifts. This is the ...
LEIA MAIS +Um engenheiro responsável por um componente de transmissão automotiva enfrenta um dilema familiar: a peça de plástico deve sobreviver à exposição ao óleo a 150°C, resistir à deformação sob carga constante e manter ...
LEIA MAIS +Um reservatório de transmissão funciona a 150°C por milhares de horas. Um conector de bateria EV fica a centímetros de células que aumentam de temperatura durante o carregamento rápido. Uma engrenagem de bomba desl...
LEIA MAIS +Um moldador por injeção está citando um guia de luz transparente com garantia externa de cinco anos. O trabalho falhará se a resina escolhida amarelar, rachar ou não conseguir preencher a cavidade de parede fina. Os g...
LEIA MAIS +During the injection molding process, PEEK has extremely strict requirements for process parameters due to its very high melting point and unique molecular structure. Zhejiang Lisu Composite Materials Co., Ltd is dedicated to providing high-performance material solutions, understanding that precise process control is key to realizing the superior performance of PEEK Plastic Pellets.
Here are the strict requirements and parameter comparisons for drying and mold temperature in PEEK injection molding:
PEEK has a certain degree of hygroscopicity. If moisture is not removed before molding, the moisture will vaporize at high temperatures during processing, causing bubbles and silver streaks on the surface of the product, or even leading to molecular chain breakage due to hydrolysis, drastically reducing mechanical strength.
The mold temperature determines the crystallinity of PEEK, directly affecting the product's rigidity, chemical resistance, and dimensional stability.
To intuitively demonstrate the strict requirements of PEEK molding, the following table compares PEEK with general engineering plastics (such as PA66):
| Parameter Item | PEEK Plastic Pellets | General Engineering Plastics (e.g., PA66) |
|---|---|---|
| Melt Temperature | 360°C - 400°C | 260°C - 290°C |
| Mold Temperature | 160°C - 200°C | 60°C - 100°C |
| Drying Temperature | 150°C - 160°C | 80°C - 100°C |
| Drying Time | 3 - 5 hours | 2 - 4 hours |
| Equipment Requirements | High-temperature oil heater, high-precision dehumidifier | Ordinary water heater, hot air dryer |
Q1: Must PEEK Plastic Pellets provided by Zhejiang Lisu Composite Materials Co., Ltd be dried before molding?
A: Yes, they must be dried. As a national high-tech enterprise, Zhejiang Lisu Composite Materials Co., Ltd emphasizes that drying is a crucial step to prevent PEEK from hydrolyzing during high-temperature processing. If the moisture content exceeds 0.02%, it will seriously affect product quality. We recommend using professional dehumidifying drying equipment to dry at 150°C - 160°C for at least 3 hours.
Q2: What are the consequences if the mold temperature does not reach above 160°C?
A: If the mold temperature is lower than required, the crystallinity of PEEK will be insufficient, leading to a rough surface finish and decreased strength, and the product is prone to dimensional deformation in high-temperature environments. The R&D team at Zhejiang Lisu Composite Materials Co., Ltd recommends using high-standard oil heaters to stabilize the mold temperature between 160°C - 200°C to ensure the material achieves its best mechanical and chemical resistance properties.
Q3: How does Zhejiang Lisu Composite Materials Co., Ltd ensure the molding performance of the PEEK materials sold?
A: Zhejiang Lisu Composite Materials Co., Ltd possesses comprehensive experimental testing capabilities and strictly implements the IATF16949 quality management system. We not only provide high-quality PEEK Plastic Pellets, but also offer detailed technical support to help customers optimize injection molding parameters, working together to promote environmentally friendly and sustainable development.