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Efficient papermaking method

A high-efficiency, high-molecular technology, applied in the field of papermaking and industrial papermaking, can solve the problems of low mechanical strength, low production efficiency, and easy foaming on the paper surface, and achieve reliable insulation performance, low production cost, and low market price. Effect

Inactive Publication Date: 2015-06-10
JIASNGSU GAOKE LOGISTICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the technical field of motor manufacturing industry in my country, the insulating paper widely used between motor turns is mainly polyarylsulfone fiber produced by DuPont Company of the United States. The advantages of this kind of paper are high mechanical strength and smooth paper surface. , the heat resistance is greater than 180°C, and the insulation performance is reliable. The disadvantage is that the paper surface is prone to blistering and delamination during the lamination process, which is not easy to operate, and the price of this kind of paper is as high as 330 yuan / kg
[0004] In order to adapt and meet the needs of the domestic market, Shanghai Paper Research Institute produced a polysulfone fiber paper; compared with polyarylsulfone fiber paper, this paper has a moderate price (about 170 yuan / kg), and the compound process is not easy to separate. layer, heat resistance can reach 155°C, its disadvantages are low mechanical strength, rough surface, and low production efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A high-efficiency papermaking method for paper with a thickness of 0.05-0.07mm, which is suitable for the insulation between the turns of motors below 5 kW. It includes the steps of preparing polymer raw materials, beating, papermaking, and calendering. The first step is to prepare polymer raw materials including the preparation of oxadiazole fiber and rosin saponification; the preparation of oxadiazole fiber is to prepare dilute sulfuric acid first, and then slowly drop concentrated sulfuric acid into water, that is, the Baume hydrometer reads 33- 34. When the specific gravity is 1.286-1.30g / cm3, the concentration of dilute sulfuric acid reaches its content of 39-41%. Next, prepare hydrazine sulfate. The process is to place 15kg of hydrazine hydrate with a concentration of 45% in a 50L plastic container. Then slowly drop 30kg of dilute sulfuric acid with a concentration of 39-41%, and then stir it with a plastic tube to make it fully react and wash it with water for 3 t...

Embodiment 2

[0021] A production method for paper with a thickness of 0.1-0.2 mm, which is suitable for the insulation between the turns of motors below 5-10 kW. The point is that the preparation of polymer raw materials includes the preparation of oxadiazole fiber and rosin saponification; the preparation of oxadiazole fiber is to prepare dilute sulfuric acid first, and slowly drop concentrated sulfuric acid into water, that is, the Baume hydrometer reads 33 -34, when the specific gravity is 1.286-1.30g / cm3, the concentration of dilute sulfuric acid reaches its content of 39-41%; followed by the preparation of hydrazine sulfate, the process is to put 30kg of hydrazine hydrate with a concentration of 45% in a 100L plastic container , and then slowly drop 60kg of dilute sulfuric acid with a concentration of 39-41%, and then stir it with a plastic tube to make it fully react and wash it with water 4 times. Oven, completely dry under the oven temperature of 105-110°C; then prepare oxadiazole ...

Embodiment 3

[0023]A production method for paper with a thickness of 0.3-0.4 mm, which is suitable for the insulation between the turns of motors below 10-15 kW. The point is that the preparation of polymer raw materials includes the preparation of oxadiazole fiber and rosin saponification; the preparation of oxadiazole fiber is to prepare dilute sulfuric acid first, and slowly drop concentrated sulfuric acid into water, that is, the Baume hydrometer reads 33 -34, when the specific gravity is 1.286-1.30g / cm3, the concentration of dilute sulfuric acid reaches its content of 39-41%; followed by the preparation of hydrazine sulfate, the process is to put 45kg of hydrazine hydrate with a concentration of 45% in a 200L plastic container , and then slowly drop 90kg of dilute sulfuric acid with a concentration of 39-41%, and then stir it with a plastic tube to make it fully react and wash it with water for 5 times. Oven, completely dry under the oven temperature of 105-110°C; then prepare oxadiaz...

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Abstract

The invention discloses an efficient papermaking method, and relates to the papermaking technical field. The efficient papermaking method is prepared by process steps of preparing high polymer raw materials, pulping, papermaking, polishing and the like. The efficient papermaking method specifically comprises the following steps: preparing diluted sulfuric acid, hydrazine sulfate, an amide-oxadiazole fiber solution, an amide-oxadiazole fiber cake and rosin saponated substances; stirring 70-90 parts of amide-oxadiazole fiber cake, 2.5-12.5 parts of CMC (carboxyl methyl cellulose), 40-60 parts of polyester fibers, 0.2-2.2 parts of rosin saponated substances and 900-950 parts of water into paper pulp under a heating and pressurizing condition according to the normal papermaking and polishing processes. The paper produced by the production method disclosed by the invention is good in heat resistance, reliable in insulating performance, low in price, and not foamed and layered in paper surface in a compounding process.

Description

technical field [0001] The invention relates to a papermaking method, in particular to a high-efficiency papermaking production method used in the motor manufacturing process, and belongs to the technical field of industrial papermaking. Background technique [0002] Paper is a tool that is inseparable from people's daily life, and it is gradually playing an important role in today's increasingly developed industry. [0003] At present, in the technical field of motor manufacturing industry in my country, the insulating paper widely used between motor turns is mainly polyarylsulfone fiber produced by DuPont Company of the United States. The advantages of this kind of paper are high mechanical strength and smooth paper surface. , the heat resistance is greater than 180°C, and the insulation performance is reliable. The disadvantage is that the paper surface is prone to blistering and delamination during the lamination process, which is not easy to operate, and the price of thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H13/24D21H17/62D21H13/00
Inventor 何志刚
Owner JIASNGSU GAOKE LOGISTICS TECH CO LTD