Polyethylene colloidal particle batch production method

Abstract

The invention discloses a polyethylene colloidal particle batch production method, and belongs to the field of polyethylene. The polyethylene colloidal particle batch production method is characterized in that a radial premixing sheet is arranged in a reaction kettle, separation and approaching of the two parts of the radial premixing sheet are controlled, and in the process, a longitudinal shaking sheet can continuously and longitudinally shake, so that raw materials are continuously vibrated back and forth at the middle part and the edge of the longitudinal shaking sheet, the operation is repeated for many times, and the transverse and longitudinal bidirectional mixing of the raw materials is realized; and compared with the prior art, the situation of poor mixing uniformity caused by theaccumulation of the raw materials far away from the center is effectively avoided, then the quality of finished colloidal particles is effectively ensured, in addition, in the clutch process of the radial premixing sheet, inert gas is introduced and released in a matched mode, a gas hardening pull pipe continuously generates the circulation process of semi-hardening, softening and semi-hardening,meanwhile, the gas hardening pull pipe is matched with a gas hard disk, the shaking range of raw materials is further widened, mixing uniformity is improved, and the quality of finished colloidal particles is further guaranteed.

Description

technical field [0001] The invention relates to the field of polyethylene, and more specifically, relates to a batch production method of polyethylene colloidal particles. Background technique [0002] Polyethylene is mainly used to make films, containers, pipes, monofilaments, wires and cables, daily necessities, etc., and can be used as high-frequency insulation materials for TVs and radars. Polyethylene is a thermoplastic resin obtained by polymerization of ethylene; polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (the lowest operating temperature can reach -100~-70°C), and has good chemical stability , resistant to most acid and alkali erosion (not resistant to oxidizing acids), insoluble in general solvents at room temperature, low water absorption, excellent electrical insulation, melting point, rigidity, hardness and strength of low-pressure polyethylene, high water absorption Small, with good electrical properties and ra...

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Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the object of the present invention is to provide a batch production method of polyethylene colloidal particles, which controls the separation and approach of the two parts of the radial premixed sheet through the setting of the radial premixed sheet in the reactor. , during this process, the vertical shaking sheet can continuously shake vertically, so that the raw material is continuously vibrated back and forth at the middle and edge of the vertical shaking sheet, and the above operation is repeated many times to realize the two-way mixing of the raw material in the horizontal and vertical directions. Compared with the existing technology, it can effectively avoid the occurrence of poor mixing due to the accumulation of raw materials away from the center, thereby effectively ensuring the quality of the finished colloidal particles. In addition, the introduction and release of inert gas are coordinated during the radial pre-mixing plate separation process. Operation, the air-hardened tube continuously undergoes a cycle of semi-hardening-softening-semi-hardening, and at the same time cooperates with the air hard disk to further increase the shaking range of raw materials, improve the uniformity of mixing, and further ensure the quality of the finished rubber particles

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