In order to make up for the above-mentioned shortcomings of pure polytetrafluoroethylene and give full play to its advantages, some filling materials are often added in actual applications to improve its performance. In short, filled PTFE not only maintains its original excellent performance, but also improves its strength, hardness, and elasticity.

The linear expansion coefficient of pure PTFE at 20〜60℃ Poor thermal conductivity. can improve mechanical strength and thermal conductivity; filling glass fiber, asbestos, ceramics, etc. The friction coefficient of pure polytetrafluoroethylene is the smallest among solids at present, only 0.01%.

Usually referred to as 'Plastic King'; 3) The temperature resistance is also good, and it can work normally under the conditions of 80〜200℃; 4) The moisture absorption coefficient is small, and the water absorption rate is 0.

Pure PTFE seals have the following disadvantages: 1) The linear expansion coefficient is relatively large.47W; 3) It not only has cold fluidity, but also is prone to plastic deformation under high temperature and high pressure; 4) Poor mechanical strength, low hardness and low elasticity. It can resist various acid and alkali corrosion.Pure PTFE seals have the following advantages: 1)

Low friction coefficient. can increase resistance Abrasiveness and improve compression resistance, reduce shrinkage. The commonly used filling materials and their functions are: filling graphite and molybdenum disulfide can improve thermal conductivity and PTFE BBQ Grill Mesh Mat wear resistance; filling bronze, molybdenum, silver powder, etc. 2) It has a high degree of chemical stability..02〜0.