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Defoaming kettle used in synthetic process of polyamic acid resin

A polyamic acid resin, synthesis process technology, applied in the direction of foam dispersion/prevention, can solve problems such as high viscosity, abnormal production continuity, and defects in manufactured products, achieve uniform color, good temperature uniformity, and reduce discoloration Effect

Inactive Publication Date: 2013-04-17
GUILIN ELECTRICAL EQUIP SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high viscosity of the polyamide resin solution, for the current polyimide film manufacturing method, it is difficult for the defoaming device to eliminate tiny bubbles in a short period of time, resulting in abnormal production continuity and surface defects such as defects in manufactured products.

Method used

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  • Defoaming kettle used in synthetic process of polyamic acid resin
  • Defoaming kettle used in synthetic process of polyamic acid resin

Examples

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Effect test

Embodiment Construction

[0018] Example of defoaming device in polyamic acid resin synthesis process figure 1 As shown, it includes a defoaming kettle to accommodate the polyamic acid resin solution. The tank body of the defoaming kettle has a feed nozzle 5 above and a discharge nozzle 10 below. A jacket is installed on the tank of the defoaming kettle in this example. There is a jacket medium inlet 9 below the jacket, and a jacket medium outlet 11 above. The pipes connect the jacket medium inlet, the jacket medium outlet and the heat-conducting medium heating device.

[0019] The stirring shaft 6 is a hollow shaft, located in the middle of the tank body, and its top end is fixedly installed in the tank body through the rotary joint 3, and is connected with the stirring motor 1 and the reducer 2 installed on the top of the tank body. The stirring shaft 6 has a multi-layer spiral stirring blade 7, and the stirring blade 7 is a hollow blade with a heat-conducting medium delivery pipeline designed therei...

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Abstract

The invention discloses a defoaming kettle used in the synthetic process of polyamic acid resin. A pot body of the defoaming kettle is provided with a jacket; a stirring shaft of a multilayer spiral mixing blade is located in the defoaming kettle, and the top end of the stirring shaft is connected with a stirring electric motor and a reductor, which are located at the top of the pot body; the stirring shaft is a hollow shaft, and the mixing blade is a hollow blade, wherein a heat-conducting medium transmission pipeline is arranged in the mixing blade; a heat-conducting medium inlet on a rotary joint is connected with the upper end of the heat-conducting medium transmission pipeline of the mixing blade, and heat-conducting medium passes through the hollow shaft to a heat-conducting medium outlet at the upper end of the hollow shaft; a jacket medium inlet, a jacket medium outlet, the heat-conducting medium inlet and the heat-conducting medium outlet are connected with a heat-conducting medium heating device; and a gas inlet and a discharge pipe are arranged on the pot body in a sealed manner.

Description

technical field [0001] The invention relates to the synthesis technology of polyamic acid resin, in particular to a defoaming kettle in the synthesis process of polyamic acid resin. Background technique [0002] Polyimide film is a polymer material with excellent properties such as high strength, high toughness, wear resistance, high temperature resistance, and corrosion resistance. It is widely used in the electrical and electronic industry, especially in the electrical industry for various high-end electrical appliances. Primary insulation. [0003] At present, the production process of polyimide film is to use polyamic acid resin solution as raw material, and salivate on a salivating machine to obtain a self-supporting polyamic acid thick film, and then heat stretching, imidization, cooling and setting to obtain a polyimide film. amine film. In order to reduce the weight and volume of products in downstream applications, the film thickness specifications demanded by the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/02C08G73/10
Inventor 任小龙董占林
Owner GUILIN ELECTRICAL EQUIP SCI RES INST
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