Home > News > Content

PTFE Rod Chemistry Is Not Chaotic

Yangzhong Tianyou Seals Co.,Ltd | Updated: Oct 23, 2017

PTFE Rod Chemistry is not chaotic

What causes the PTFE problem

A, Teflon rod diameter error change big:

1. Screw work speed is not smooth. 2. The barrel heating temperature is shaken. 3. Porous plate at the filter obstruction. 4. Traction speed is not smooth.

Second, Teflon rod roundness irregular: 1. Mold mold temperature shake. Extrusion molding melt temperature is not chaos. 2. Screw wear serious, extrusion melt pressure is not chaos. 3. Tractor operation is not smooth.

Third, the product looks rough, dull: 1. The barrel heating temperature is low, the material is not average plastic. 2. Mold mold temperature is low. 3. Filter break, speculation in the impurities and more. 4. Forming die in the mold or set the shape of the inside and outside the table rough, smooth finish.

Fourth, the appearance of PTFE rods have bubbles or silver: 1. Material boring disposition of different grid, guess the high moisture content. 2. Heating barrel temperature is high.

5, out of broken material: 1. For the bucket entrance obstruction

Single screw extruder 2. The barrel feed section temperature is too high. 3. Filter impurities on the network, obstruction filter. 4. Mold mold temperature is too low, the melt running resistance.

6, extruded PTFE rods do not go straight line: 1. Die or sizing the temperature difference between the sections of the larger. 2. Product cooling stereotypes cooling uneven. 3. Auxiliary machine and extruder homework center line is not a straight line. 4. The inlet and outlet of the cooling water tank are different from the die. 5. products are not fully cooling.

The industrial significance of polytetrafluoroethylene

 Chemical production plant in a certain temperature and pressure under the premise of strict technical requirements, the raw materials involved in a variety of gases, liquids, solids, physical differences vary, the need for various types of production equipment. But these devices in contact with the media in the production of all the time have been eroded, thus severely restricting the development of chemical and other industries.

In the case of underdeveloped technology, people always looking for corrosion resistance in the metal. But these devices are often high weight, can not solve a large number of erosion problems. After that, people began to try to use non-metallic resources to replace the metal. Plastic first applied in our country is polytetrafluoroethylene.

With the improvement of science and technology, the traditional anti-corrosion non-metallic materials, anti-erosion equipment development is increasingly perfect, the new corrosion-resistant non-metallic materials products continue to emerge. In the use of new technologies, new materials to develop anti-erosion of the new wave of products, polytetrafluoroethylene anti-erosion products Guilin a rapid development.

Polytetrafluoroethylene has a high degree of chemical chaos, he can withstand almost all of the commonly used strong erosion, hydrogen oxidation of chemical substances, but also has the characteristics of high temperature, so it is an ideal anti-erosion materials. Through the processing of molding technology research, polytetrafluoroethylene anti-erosion products in the industry more and more widely used.