Manufacturing method of PTFE suspension pellets
I. Introduction
Polytetrafluoroethylene (PTFE) is a high-performance fluoroplastic, with excellent chemical resistance, high temperature resistance, low coefficient of friction and other characteristics, is widely used in the chemical industry, machinery, electronics, pharmaceuticals and other fields. PTFE suspension pellets is an important raw material for the manufacture of high-performance PTFE products, and the method of its manufacture has an important influence on the performance and quality of the product. Its manufacturing method has an important influence on the performance and quality of the products. This article will introduce the manufacturing method of PTFE suspension pellets. Manufacturing method
1. Ingredients
The main raw material of PTFE suspension pellets is PTFE resin, and the additives include dispersants, stabilizers, lubricants and so on. According to a certain proportion of raw materials added to the high-speed mixer, fully mixed.
2. Emulsification
Add the ingredients into the emulsifier, add a certain amount of water, and disperse the PTFE resin into tiny particles through high-speed mixing to form an oil-in-water emulsion. The mixing speed and time need to be controlled during the emulsification process to ensure the uniformity and stability of the particles.
3. Coagulation
Add coagulant to the emulsion to make PTFE particles coagulate into larger particles. The type of coagulant and the amount of coagulant added need to be adjusted according to the actual situation to ensure that the size and shape of the particles meet the requirements.
4. Washing
Wash the coalesced particles with water to remove impurities and residues on the surface. The washing process requires several water changes to ensure the purity of the granules.
5. Drying
Put the washed particles into a drying oven and dry them at a suitable temperature to obtain PTFE suspension mesopellets. Temperature and time need to be controlled during drying to prevent deformation and deterioration of the particles.
3. Precautions
1. Strictly control the quality and proportion of raw materials to ensure the performance and stability of the product.
2. Appropriate stirring speed and time need to be maintained during emulsification to avoid oversized or undersized particles.
3. The type and amount of coagulant added need to be adjusted according to the actual situation to ensure that the size and shape of the particles meet the requirements.
4. Water needs to be changed several times during the washing process to ensure the purity of the granules.
5. Temperature and time need to be controlled during drying to prevent the pellets from deformation and deterioration.
4. Summary
The manufacturing method of PTFE suspension pellets includes the steps of batching, emulsification, coagulation, washing and drying. The process parameters of each step need to be strictly controlled during the manufacturing process to ensure the performance and quality of the product. At the same time, need to pay attention to safety and environmental protection, comply with relevant laws and regulations and standards. By mastering the manufacturing method of PTFE suspension mesopellets, it can improve product quality and production efficiency for enterprises, reduce costs and enhance market competitiveness.
