The reason of cavity in mixed sintering of polytetrafluoroethylene and glass fiber

Time of issue:2024-11-27 13:41

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First, the forming process of mixed polytetrafluoroethylene and glass fiber

After mixing polytetrafluoroethylene and glass fiber, it can be formed by the process of hot press sintering. During the molding process, it is molded and cured by heat and pressure, resulting in a fiber-reinforced polymer.

Second, the cause of the formation of the void

1. Lots of glass fiber

In the preparation process of the mixed material, if too much glass fiber is added, the composition of the mixture will be uneven, which is easy to cause holes in the finished product.

2. Uneven distribution of glass fibers

The uneven distribution of glass fibers in the mixture is also an important factor leading to voids. If the glass fiber is not evenly distributed during the molding process, this will lead to holes and weaknesses in the finished product.

3. Poor bubble emission

In the molding process, when polytetrafluoroethylene is mixed with glass fiber, the air and water in the material can not be discharged, which leads to many holes and bubbles in the finished product.

Third, the solution

In order to avoid the generation of holes, first of all to ensure that the mass in the material is evenly distributed, do not add too much glass fiber and other impurities. Secondly, the temperature and pressure during the molding process should be controlled to ensure that the material can be evenly distributed. At the same time, moisture and bubbles in the material should be eliminated before processing to ensure uniform melting and solidification of all parts during the sintering process.

Conclusion

The main reasons for the holes in the forming process of mixed polytetrafluoroethylene and glass fiber are too many glass fibers, uneven distribution and poor bubble discharge in the sintering process. To solve this problem, we should control the quality of the mixed material, the temperature and pressure of the molding process and eliminate moisture and bubbles.

last page

Introduction to the processing of fusible polytetrafluoroethylene (PFA)

10 Common Defects of PTFE and Strategies for Improvement

last page

Introduction to the processing of fusible polytetrafluoroethylene (PFA)

10 Common Defects of PTFE and Strategies for Improvement

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