Manufacturing method of PG20T
PG20T is a high-performance engineering plastic with excellent heat resistance, chemical resistance and mechanical properties, which is widely used in the field of raw materials for chemical production. This paper will introduce the manufacturing method of PG20T.
I. Raw material preparation
1. Sebacic acid: sebacic acid is the main raw material of PG20T, and its purity should be higher than 99%.
2. 1,10-decanediamine: 1,10-decanediamine is another main raw material of PG20T, and its purity should be higher than 98%.
II. Synthesis reaction
The synthesis reaction of PG20T adopts the mechanism of polycondensation reaction, the specific steps are as follows:
1. Add sebacic acid and 1,10-decanediamine into the reactor according to a certain molar ratio and stir well.
2. Gradually increase the reaction temperature and control it within a certain range to initiate the polycondensation reaction.
3. By-product water is continuously discharged during the reaction to promote the reaction.
4. At the end of the reaction, PG20T prepolymer is obtained.
3. Post-treatment
1. Vacuum dry the PG20T prepolymer to remove residual water and other volatile substances.
2. Pelletizing by extruder to obtain PG20T pellets.
IV.QUALITY CONTROL
1. The synthesized PG20T was subjected to infrared spectral analysis to confirm its structure.
2. Perform thermal stability test, mechanical property test, etc. on the PG20T granules to ensure that it meets the relevant standards.
V. Precautions
1. During the synthesis reaction, the reaction temperature and pH should be strictly controlled to avoid the occurrence of side reactions.
2. In the post-treatment process, drying should be ensured thoroughly to avoid moisture absorption of the product.
3. During the production process, safety production and environmental protection should be emphasized, and relevant laws and regulations should be observed.
In conclusion, the manufacturing method of PG20T requires strict control of process parameters in each step to ensure product quality. Through the manufacturing methods introduced in this article, high-performance PG20T engineering plastics can be produced to provide high-quality materials for the field of raw materials for chemical production.
