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A kind of polymerization granulation system and method

A technology of granulation and granulation machine, which is applied in the direction of coating, etc., can solve the problems of the influence of output rate and the decrease of melt flow rate, etc., and achieve the effect of temperature control, fluidity maintenance and increase of output rate

Active Publication Date: 2019-08-02
宁波海格拉新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are many difficulties in the preparation process of thermotropic liquid crystal polymers. For example, the temperature and vacuum degree in the reaction process are high, and the materials need to be accurately controlled under the condition of ensuring a certain degree of vacuum and temperature. In addition, Since the viscosity of the polymer melt after reaction will increase with time without shearing, the flow rate of the melt will become smaller, which will have a certain impact on the output rate
Due to the above problems, TLCP granulation technology is still in the research stage in China, and the direct granulation of thermotropic liquid crystal polymer (TLCP) after polymerization is even blank.

Method used

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  • A kind of polymerization granulation system and method
  • A kind of polymerization granulation system and method
  • A kind of polymerization granulation system and method

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Embodiment 1

[0048] The present invention is a kind of polymerization granulation system used in the manufacturing process of thermotropic liquid crystal polymer, see figure 1 , the device mainly includes a reaction kettle 1, an extruder 2, a cyclone hopper 3, a granulator 4, a vibrating screen 5, a heating system, and a vacuum system. The reaction kettle 1 is connected with an extruder 2, a granulator 4, The cyclone silo 3 and the vibrating screen 5, the discharge port 1-1 of the reactor is opposite to the extruder 2, so that the melt in the reactor 1 flows out through the screw 2-2 of the extruder 2, and the extruder discharges The port 2-3 is connected to the granulator 4, and the discharge port of the granulator 4 is connected to the feeding pipe 7 to form a material transportation chain. One end of the feeding pipe 7 is connected to a feeding fan 6, and the extruded material passes through the granulator 4. After granulation, it is sent into the cyclone silo 3 through the feeding fan ...

Embodiment 2

[0060] The present invention also provides a kind of polymerization granulation method in addition, and this method comprises the following steps:

[0061] a. Connect reactor 1, extruder 2, granulator 4, cyclone hopper 3 and vibrating screen 5 in sequence, and make extruder 2 vertically arranged below reactor 1;

[0062] b. Install the sealing member 1-2 at the bottom of the reactor 1, install the sealing top cover 1-3 and the stirring assembly of the reactor 1 in place, and connect the reactor 1 to the vacuum system, the heating system and the nitrogen pipeline respectively;

[0063] c. Add the required monomer materials and catalysts into the feeding port 1-4 on the sealed top cover 1-3 of the reaction kettle, and start the stirring paddle 1-8 to fully mix the materials;

[0064] d. Cover and seal the top cover 1-3, use the vacuum system to extract the air in the reactor 1 until the required vacuum degree is reached in the reactor 1, and at the same time, deliver nitrogen to...

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Abstract

The invention relates to the technical field of chemicals preparation machinery, in particular to a polymerization granulating system and method. The polymerization granulating system comprises a reactor, an extruder, a cyclone stock bin, a granulator, a vibrating screen, a heating system and a vacuum system. Through butt connection between the reactor and the extruder, under the action of rotational direction changes of stirring blades inside the reactor and a screw of the extruder and by means of the granulator, the cyclone stock bin and the vibrating screen which are connected, the processes of extruding, thermal cutting, granulating and collection of aromatic polyesters in a molten state are finally achieved. The polymerization granulating system is compact in structure, convenient to operate, high in yield rate, and high in control precision of temperature and vacuum degree during reaction.

Description

technical field [0001] The invention relates to the technical field of chemical preparation machinery, in particular to a polymerization and granulation system and method. Background technique [0002] Liquid crystal polymer (LCP) is a class of engineering plastics with excellent performance. It was not until the late 1970s that people began to conduct basic research on it, and it has been industrialized in the 1980s. In recent years, it has been gradually used in electronic appliances, aerospace, chemical industry, optical fiber communication, machinery industry and other fields. Following the lyotropic liquid crystal polymers represented by rigid chain aromatic polyamides, another type of liquid crystal polymers—thermotropic liquid crystal polymers (TLCP)—appeared. [0003] Thermotropic liquid crystal polymer (TLCP) not only has good flame retardancy, heat resistance, chemical resistance, weather aging resistance, and radiation resistance, but also has excellent mechanica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/78B29B9/06B29B9/16
CPCB29B9/06B29B9/16C08G63/785
Inventor 不公告发明人
Owner 宁波海格拉新材料科技有限公司
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