Processing method of irradiation modified polytetrafluoroethylene

Abstract

The invention discloses a processing method of irradiation modified polytetrafluoroethylene, and particularly relates to the technical field of polytetrafluoroethylene processing, and the processing method comprises the following steps: step 1, selecting a high-quality polytetrafluoroethylene raw material, and ensuring that the purity, molecular weight and granularity of the polytetrafluoroethylene raw material meet requirements; 2, a high-energy electron accelerator is prepared, it is ensured that the high-energy electron accelerator operates normally, the energy is set to be 0.5-10 MeV, an irradiation chamber is prepared, it is ensured that the interior of the irradiation chamber is clean and free of impurities, and the safety requirement of irradiation processing is met; step 3, processing a polytetrafluoroethylene raw material into a bar material, and then cleaning and drying the bar material to remove stains and grease on the surface so as to ensure the irradiation effect; and 4, monitoring the dose uniformity in the irradiation chamber by using dose measurement equipment. The irradiation modified polytetrafluoroethylene processed by the invention can effectively ensure the modification effect, and the later use effect of the polytetrafluoroethylene is prevented from being influenced, so that the practical application effect of the irradiation modified polytetrafluoroethylene is relatively good.

Description

Technical Field

[0001] The present invention relates to the technical field of polytetrafluoroethylene processing. More specifically, the present invention relates to a processing method for irradiated modified polytetrafluoroethylene. Background Art

[0002] Polytetrafluoroethylene (PTFE) has been widely used in many fields such as chemical industry, electronics, and medical due to its excellent chemical stability, low friction coefficient, and resistance to high and low temperatures. However, the processing of polytetrafluoroethylene faces many challenges. For example, its melt viscosity is extremely high and its fluidity is poor, making conventional thermoplastic processing methods inapplicable. Special processing techniques such as powder sintering need to be used. At the same time, parameters such as temperature, pressure, and time during the processing have a significant impact on the product quality, and small parameter fluctuations may lead to defects such as pores, cracks, and uneven properties in the product.

[0003] In actual application, the existing polytetrafluoroethylene processing methods cannot effectively guarantee the modification effect of polytetrafluoroethylene, resulting in an impact on the later use effect of polytetrafluoroethylene. Therefore, there is an urgent need for a processing method for irradiated modified polytetrafluoroethylene. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a processing method for irradiated modified polytetrafluoroethylene. The irradiated modified polytetrafluoroethylene processed by the present invention can effectively guarantee the modification effect, avoiding the impact on the later use effect of polytetrafluoroethylene, and making the actual application effect of the present invention better, so as to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A processing method for irradiated modified polytetrafluoroethylene, comprising the following steps: Step 1: Select high-quality polytetrafluoroethylene raw materials to ensure that the purity, molecular weight, and particle size of the polytetrafluoroethylene raw materials meet the requirements; Step 2: Prepare a high-energy electron accelerator to ensure that the high-energy electron accelerator operates normally, with the energy set to 0.5 - 10 MeV. Prepare an irradiation chamber to ensure that the irradiation chamber is clean, free of impurities, and meets the safety requirements for irradiation processing; Step 3: Process the polytetrafluoroethylene raw materials into rods, and then perform cleaning and drying treatments on them to remove surface stains and grease to ensure the irradiation effect; Step 4: Use a dose measurement device to monitor the dose uniformity in the irradiation chamber, and then move the cleaned and dried polytetrafluoroethylene rods into the irradiation chamber, adjust the material position to ensure that the samples can be irradiated evenly; Step 5: Use a dosimeter to accurately measure and calibrate the dose output by the accelerator to ensure that the actual irradiation dose is consistent with the preset dose. Determine the irradiation dose range according to the modification requirements of polytetrafluoroethylene and the performance of the accelerator, and make fine adjustments within this range to achieve the best modification effect. Start the high-energy electron accelerator and begin the irradiation process. Monitor the dose rate and temperature parameters during the irradiation process to ensure the stability and safety of the irradiation process. Control the end of the irradiation process according to the preset dose and time. Step 6: After the irradiation is completed, turn off the accelerator and wait for the irradiation chamber to cool down to a safe temperature. Open the irradiation chamber and take out the irradiated PTFE sample. Step 7: Conduct performance tests on the irradiated PTFE sample, including tests for tensile strength, wear resistance, and corrosion resistance, to measure the irradiation modification effect.

[0006] Technical effects and advantages of the present invention: The present invention first selects high-quality polytetrafluoroethylene raw materials to ensure that the purity, molecular weight, and particle size of the polytetrafluoroethylene raw materials meet the requirements. Then, prepare a high-energy electron accelerator to ensure its normal operation, with the energy set at 0.5 - 10 MeV. Prepare the irradiation chamber to ensure that it is clean, free of impurities, and meets the safety requirements for irradiation processing. Process the polytetrafluoroethylene raw materials into rods, and then perform cleaning and drying treatments on them to remove surface stains and grease to ensure the irradiation effect. Use a dose measurement device to monitor the dose uniformity in the irradiation chamber. Then, move the cleaned and dried polytetrafluoroethylene rods into the irradiation chamber, adjust the material position to ensure that the samples can be irradiated evenly. Use a dosimeter to accurately measure and calibrate the dose output by the accelerator to ensure that the actual irradiation dose is consistent with the preset dose. Determine the irradiation dose range according to the modification requirements of polytetrafluoroethylene and the performance of the accelerator, and make fine adjustments within this range to achieve the best modification effect. Start the high-energy electron accelerator and begin the irradiation process. Monitor the dose rate and temperature parameters during the irradiation process to ensure the stability and safety of the irradiation process. Control the end of the irradiation process according to the preset dose and time. After the irradiation is completed, turn off the accelerator and wait for the irradiation chamber to cool down to a safe temperature. Open the irradiation chamber and take out the irradiated PTFE sample. Conduct performance tests on the irradiated PTFE sample, including tests for tensile strength, wear resistance, and corrosion resistance, to measure the irradiation modification effect. The irradiated and modified polytetrafluoroethylene processed by the present invention can effectively ensure the modification effect, avoid affecting the later use effect of polytetrafluoroethylene, and make the actual application effect of the present invention better. Specific embodiments

[0007] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0008] Embodiment The present invention provides a processing method for irradiated modified polytetrafluoroethylene, comprising the following steps: Step 1: Select high-quality polytetrafluoroethylene raw materials to ensure that the purity, molecular weight and particle size of the polytetrafluoroethylene raw materials meet the requirements; Step 2: Prepare a high-energy electron accelerator to ensure its normal operation, set the energy to 0.5 - 10 MeV, prepare an irradiation chamber to ensure that the irradiation chamber is clean, free of impurities, and meets the safety requirements for irradiation processing; Step 3: Process the polytetrafluoroethylene raw materials into rods, and then perform cleaning and drying treatments on them to remove surface stains and grease to ensure the irradiation effect; Step 4: Use a dose measurement device to monitor the dose uniformity in the irradiation chamber, and then move the cleaned and dried polytetrafluoroethylene rods into the irradiation chamber, adjust the material position to ensure that the samples can be irradiated uniformly; Step 5: Use a dosimeter to accurately measure and calibrate the dose output by the accelerator to ensure that the actual irradiation dose is consistent with the preset dose. Determine the irradiation dose range according to the modification requirements of polytetrafluoroethylene and the performance of the accelerator, and make fine adjustments within the range to achieve the best modification effect. Start the high-energy electron accelerator to start irradiation processing, monitor the dose rate and temperature parameters during the irradiation process to ensure the stability and safety of the irradiation process, and control the end of the irradiation process according to the preset dose and time; Step 6: After the irradiation is completed, turn off the accelerator, wait for the irradiation chamber to cool down to a safe temperature, open the irradiation chamber, and take out the irradiated PTFE samples; Step 7: Perform performance tests on the irradiated PTFE samples, including tests on tensile strength, wear resistance, and corrosion resistance, to measure the irradiation modification effect.

[0009] The present invention first selects high-quality polytetrafluoroethylene raw materials to ensure that the purity, molecular weight and particle size of the polytetrafluoroethylene raw materials meet the requirements. Then, a high-energy electron accelerator is prepared to ensure its normal operation, with the energy set at 10 MeV. An irradiation chamber is prepared to ensure that it is clean, free of impurities and meets the safety requirements for irradiation processing. The polytetrafluoroethylene raw materials are processed into rods, and then they are cleaned and dried to remove surface stains and grease to ensure the irradiation effect. A dose measurement device is used to monitor the dose uniformity in the irradiation chamber. Then, the cleaned and dried polytetrafluoroethylene rods are moved into the irradiation chamber, and the material position is adjusted to ensure that the samples can be irradiated uniformly. A dosimeter is used to accurately measure and calibrate the dose output by the accelerator to ensure that the actual irradiation dose is consistent with the preset dose. According to the modification requirements of polytetrafluoroethylene and the performance of the accelerator, the irradiation dose range is determined and fine-tuned within the range to achieve the best modification effect. The high-energy electron accelerator is started to begin the irradiation processing, and the dose rate and temperature parameters during the irradiation process are monitored to ensure the stability and safety of the irradiation process. According to the preset dose and time, the end of the irradiation process is controlled. After the irradiation is completed, the accelerator is turned off, and the irradiation chamber is waited to cool down to a safe temperature. The irradiation chamber is opened, and the irradiated PTFE samples are taken out. Performance tests are carried out on the irradiated PTFE samples, including tests of tensile strength, abrasion resistance and corrosion resistance, to measure the irradiation modification effect. The irradiated and modified polytetrafluoroethylene processed by the present invention can effectively ensure the modification effect, avoid affecting the later use effect of polytetrafluoroethylene, and make the actual application effect of the present invention better.

[0010] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A processing method for irradiated modified polytetrafluoroethylene, characterized in that, It includes the following steps: Step 1: Select high-quality polytetrafluoroethylene raw materials to ensure that the purity, molecular weight, and particle size of the polytetrafluoroethylene raw materials meet the requirements; Step 2: Prepare a high-energy electron accelerator to ensure that the high-energy electron accelerator operates normally, with the energy set at 0.5 - 10 MeV. Prepare an irradiation chamber to ensure that the irradiation chamber is clean, free of impurities, and meets the safety requirements for irradiation processing; Step 3: Process the polytetrafluoroethylene raw materials into rods, and then clean and dry them to remove surface stains and grease to ensure the irradiation effect; Step 4: Use a dose measurement device to monitor the dose uniformity in the irradiation chamber, and then move the cleaned and dried polytetrafluoroethylene rods into the irradiation chamber, adjusting the material position to ensure that the samples can be irradiated evenly; Step 5: Use a dosimeter to accurately measure and calibrate the dose output by the accelerator to ensure that the actual irradiation dose is consistent with the preset dose. Determine the irradiation dose range according to the modification requirements of polytetrafluoroethylene and the performance of the accelerator, and make fine adjustments within the range to achieve the best modification effect. Start the high-energy electron accelerator to start irradiation processing, monitor the dose rate and temperature parameters during the irradiation process to ensure that the irradiation process is stable and safe, and control the end of the irradiation process according to the preset dose and time; Step 6: After the irradiation is completed, turn off the accelerator, wait for the irradiation chamber to cool to a safe temperature, open the irradiation chamber, and take out the irradiated PTFE samples; Step 7: Conduct performance tests on the irradiated PTFE samples, including tests of tensile strength, abrasion resistance, and corrosion resistance, to measure the irradiation modification effect.