Method and equipment for continuous production of antistatic polyester
A technology of antistatic and polymerization equipment, which is applied in the field of continuous production of antistatic polyester and equipment, can solve the problems of degraded blend quality deterioration, environmental impact, high cost, etc., and achieve low production costs, stable varieties, and simple methods Effect
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[0022] Example 1
[0023] Use terephthalic acid and ethylene glycol as raw materials for esterification reaction at 200~260℃ (for example, 200℃, 230℃, 260℃), and then at 280~300℃ (for example, 280℃, 290℃, 300℃) ) The recondensation reaction is carried out at a temperature lower than 300 Pa under vacuum to continuously produce a polyethylene terephthalate (abbreviated as: PET) melt with a viscosity of 0.655. The polyethylene terephthalate melt in the continuous polymerization equipment 1 is fed through the main pipeline 2 at a rate of 1000 kg / h at a temperature of 220 to 300°C (for example, 220°C, 240°C, 280°C, 300°C) In the total mixing device 3, the antistatic masterbatch is added to the hopper 6, and is connected to the polyester main pipeline through a pipeline, and the supply amount is 5kg / h. The mixture further enters the blending device 3 for blending treatment to obtain an antistatic polyester. The blending temperature in the blending device 3 was 280°C. The content of the ...
Example Embodiment
[0026] Example 6
[0027] Use terephthalic acid and ethylene glycol as raw materials for esterification reaction at 200~260℃ (for example, 200℃, 230℃, 260℃), and then at 280~300℃ (for example, 280℃, 290℃, 300℃) ) The recondensation reaction is carried out at a temperature lower than 300 Pa under a vacuum to continuously produce a polyethylene terephthalate (abbreviated as: PET) melt with a viscosity of 0.655. The polyethylene terephthalate melt in the continuous polymerization equipment 1 is fed through the main pipeline 2 at a rate of 1000 kg / h at a temperature of 220 to 300°C (for example, 220°C, 240°C, 280°C, 300°C) Co-mixing device 3; antistatic masterbatch and antioxidant IR1010 (or antioxidant 1076, antioxidant TNP, 168) are mixed and added to the hopper 6, connected to the main polyester pipeline through a pipeline, the supply amount is 5kg / h. The mixture further enters the blending device 3 for blending treatment to obtain an antistatic polyester. The blending temperature...
Example Embodiment
[0028] Example 7:
[0029] The polyester melt synthesized in the polymerization equipment is polyethylene terephthalate or polybutylene terephthalate or poly 1,3-propylene terephthalate; polyester and antistatic masterbatch are two The amount of raw materials for each component is calculated by weight percentage: polyester 97%~99.5% (example 97%, 98%, 99.5%), antistatic masterbatch 0.5%~3% (example 3%, 2%, 0.5%) ). There are surplus polyester output pipes 4 and 5 connected to the main pipe in the equipment, and the rest are the same as in Example 1. There is hopper 7 in the picture. The surplus polyester shed can be directly used for spinning, film-forming processing or making polyester chips.
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