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Polyester postaddition melt modifying system

A technology of adding melt and polyester, which is applied in the field of polyester production and can solve problems such as the decrease of intrinsic viscosity of melt

Active Publication Date: 2013-01-09
江苏桐昆恒欣新材料有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] However, in the actual production process, it was found through analysis and detection that although the melt modification improved the overall performance of the final product, the intrinsic viscosity of the final product decreased by 0.03-0.04, which exceeded the allowable intrinsic viscosity decrease of 0.02 for the system design.
By analyzing the factors that lead to the decrease of intrinsic viscosity of the melt and adjusting the production process, it is found that the moisture in the additives mainly leads to the decrease of the intrinsic viscosity of the melt

Method used

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  • Polyester postaddition melt modifying system
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Embodiment Construction

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0025] Such as figure 1 and figure 2 As shown, the present invention provides a polyester post-addition melt modification system 100, including a melt main pipe 101, a blending screw 102, a melt filter 103, a fluid converter 104, a first melt pump 105, a second The melt pump 106 and the third melt pump 107, the blending screw 102 has a melt feed port 108, an additive feed port 109 and a modified melt discharge port 110, wherein the melt main pipe 101 passes through the first melt The pump 105 is connected with the melt inlet 108; the modified melt outlet 110 is connected with one end of the melt filter 103 through the ...

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Abstract

The invention discloses a polyester postaddition melt modifying system, which belongs to the field of a polyester production technology. The polyester postaddition melt modifying system comprises a melt main pipe, a blending screw, a melt filter, a fluid converter and multiple melt pumps. In addition, the polyester postaddition melt modifying system further comprises a vacuum drying apparatus and / or a vacuum suction device. According to the polyester postaddition melt modifying system provided by the invention, as the vacuum drying device is arranged, an additive can be completely and uniformly dried before entering the modifying system, and further, the moisture brought into the modifying system through the additive can be reduced as much as possible; and as the vacuum suction device is arranged in the modifying system to suck the moisture removed from the additive after the additive and a melt are mixed, the moisture in the modifying system is further reduced, and further, the influence on the intrinsic viscosity of the melt, due to the addition of the additive, is finally reduced.

Description

technical field [0001] The invention relates to the field of polyester production, in particular to a polyester post-addition melt modification system. Background technique [0002] At present, in the polyester production process, in order to obtain polyester products with superior comprehensive properties, additives are usually added to the polyester melt before melt extrusion to modify the melt. The polyester post-addition melt modification process is mainly completed through the following process: the polyester melt is transferred to the blending screw, the additive is added to the blending screw, the melt and the additive are fully mixed to obtain a modified melt, and the modified melt is filtered. Impurities in the permanent melt, adjust the pressure of the modified melt, and finally transfer the modified melt to the next process. [0003] However, in the actual production process, it was found through analysis and detection that although the melt modification improved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/78B29B7/80
Inventor 邱国全金家齐张治义李永强朱希访肖建国
Owner 江苏桐昆恒欣新材料有限公司
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