Reaction device for continuous solution polymerization of polyacrylonitrile-based carbon fiber
A polyacrylonitrile-based carbon fiber and reaction device technology, which is applied in the chemical characteristics of fibers, textiles and papermaking, etc., can solve the problems of serious gelation in the first kettle, restricting the cycle of continuous operation, etc., and achieve the effect of improving the difference.
Active Publication Date: 2019-03-05
HENGSHEN
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Problems solved by technology
[0005] The purpose of the present invention is to provide a reaction device for continuous solution polymerization of polyacrylonitrile-based carbon fibers to solve the problem that the gel phenomenon in the first kettle is relatively serious in the prior art, which will seriously restrict the cycle of continuous operation
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[0018] A reaction device for continuous solution polymerization of polyacrylonitrile-based carbon fiber, comprising a polymerization tank 1 and a stirrer 2, the top of the polymerization tank 1 is provided with a discharge port 8, the stirrer 2 includes a motor, a reduction box and a stirring assembly, the motor and a speed reducer The box is arranged on the top of the polymerization kettle 1, and the stirring assembly is arranged in the inner chamber of the polymerization kettle 1, and the inner inner wall of the stirring assembly and the polymerization kettle 1 is provided with a Teflon coating 6, and also includes a homogeneous mixing pump 5, a first cooling Water inlet pipe 11, second cooling water inlet pipe 12, heat exchanger 4 outside the kettle, external circulation pipeline of the kettle and external circulation pump 3 of the kettle, the outside of the polymerization kettle 1 is provided with a cooling jacket 10 for cooling water to pass through, cooling One side of th...
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The invention provides a reaction device for continuous solution polymerization of polyacrylonitrile-based carbon fibers. The reaction device comprises a polymerizing pot and a stirrer, wherein a stirring assembly and the internal wall of an inner chamber of the polymerizing pot are provided with Teflon coatings. The reaction device further comprises a homogeneous mixing pump, a first cooling water inlet pipe, a second cooling water inlet pipe, a pot-outside heat exchanger and a pot-outside circulating pump, wherein a material inlet of the pot-outside heat exchanger communicates with a material circulating outlet of the bottom of the polymerizing kettle through the pot-outside circulating pump, and a material outlet of the pot-outside heat exchanger communicates with a material circulating inlet of the middle part of the polymerizing pot through the homogeneous mixing pump. According to the reaction device, new-added materials and materials in the pot can be rapidly homogenized, heat of the reaction can be removed in time, the stable control on the reaction temperature is achieved, the problem that a first pot for continuous solution polymerization of the PAN-based carbon fibers is serious in gelatination can be effectively solved, the cycle of stable running of continuous polymerization is prolonged, the quality of a polymerization stock solution is improved, and then, the quality of the carbon fibers is improved.
Description
technical field [0001] The invention relates to a reaction device for continuous solution polymerization of polyacrylonitrile-based carbon fiber. Background technique [0002] Carbon fiber has the characteristics of high temperature resistance, corrosion resistance, small thermal expansion coefficient, good dimensional stability, high specific strength, high specific modulus, etc. It is an ideal functional material and structural material, widely used in aerospace, energy, transportation, electronics, etc. , civil engineering and sports and leisure fields. At present, most of the carbon fibers produced and sold in the world are polyacrylonitrile (PAN)-based carbon fibers. [0003] Polyacrylonitrile-based (PAN) carbon fiber is prepared by radical polymerization of acrylonitrile (AN) and comonomer, followed by spinning, pre-oxidation, and carbonization. There are two forms of polyacrylonitrile (PAN) synthesis equipment using DMSO as solvent: continuous polymerization and bat...
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IPC IPC(8): C08F2/01C08F2/04C08F120/44D01F9/22
CPCC08F2/01C08F2/04C08F120/44D01F9/22
Inventor 程世锋刘贯通钱鸿川何小松刘晓
Owner HENGSHEN