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Polyimide fiber sizing device

A polyimide fiber and cleaning device technology, applied in the field of fiber production, can solve the problems of uneven dryness and wetness of fiber tow, poor resin bonding interface performance, affecting production quality and efficiency, etc., to achieve stable sizing , Improve the surface function effect, avoid the effect of sizing liquid waste

Active Publication Date: 2019-09-20
JIANGSU XIANNUO NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the traditional sizing process, the amount of sizing cannot be controlled, the sizing is uneven, the waste of sizing solution is serious, and the degree of dryness and humidity inside and outside the fiber tow is different during the drying process, resulting in poor bonding interface performance with the resin in the later stage, which seriously affects the production. quality and efficiency, virtually increased production costs

Method used

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  • Polyimide fiber sizing device

Examples

Experimental program
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Effect test

Embodiment 1

[0028] In the polyimide fiber sizing device in the present invention, the sizing solution adopts a wear-resistant oil agent, and the 1500D polyimide fiber is used as a standard, and the specific process parameters are as follows:

[0029] The polyimide fiber 7 is fed into the pretreatment tank 2 from the creel 1, and the surface of the fiber is modified in the pretreatment solution, and then enters the cleaning tank 3 to clean the fiber to neutral, and then passes through the sizing tank 4 for sizing. After the slurry device 13 comes out, it enters into the microwave drying device for drying, and then is wound up by the wire-receiving device 6 .

[0030] Potassium hydroxide is selected to etch the surface of the polyimide fiber 7; the concentration of the pretreatment solution is selected to be 6M, the pretreatment time is preferably 30s, and the pretreatment temperature is preferably 30°C.

[0031] The polyimide fiber 7 is cleaned in the cleaning tank 3, and the etching solut...

Embodiment 2

[0036] In the polyimide fiber sizing device in the present invention, the sizing solution adopts a wear-resistant oil agent, and the 1500D polyimide fiber is used as a standard, and the specific process parameters are as follows:

[0037] Production according to the sizing process in Example 1, it is worth mentioning that potassium hydroxide is replaced with deionized water in the pretreatment tank 2, and other conditions remain unchanged (the deionized aqueous solution is still contained in the cleaning tank 3).

[0038] Beneficial effect: the abrasion resistance of the polyimide fiber 7 after sizing is 180 times higher than that of the polyimide fiber 7 without sizing.

Embodiment 3

[0040]In the polyimide fiber sizing device in the present invention, the sizing solution adopts a wear-resistant oil agent, and the 1500D polyimide fiber is used as a standard, and the specific process parameters are as follows:

[0041] It is produced according to the sizing process in Example 1. It is worth mentioning that the drying device 5 is heated by a thermocouple, and other conditions remain unchanged.

[0042] Beneficial effects: the abrasion resistance of the polyimide fiber 7 after sizing is 255 times higher than that of the polyimide fiber 7 without sizing.

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Abstract

The invention belongs to the technical field of fiber production and provides a polyimide fiber sizing device. The polyimide fiber sizing device comprises a pretreatment unit, a washing unit, a sizing unit and a drying unit; sizing of polyimide fiber is completed through the pretreatment unit, the cleaning unit and the sizing unit in sequence, and the drying unit dries the sized polyimide fiber; the pretreatment unit is provided with a pretreatment solution to have the polyimide fiber etched; the drying unit is a microwave heating unit. The polyimide fiber sizing device has the advantages that the cohesive force of size with the polyimide fiber is increased by the pretreatment solution; microwave heating makes the fiber tow heated inside and outside, and heating is more uniform, which greatly improves the drying efficiency and reduces the waste of electric energy simultaneously; the sizing device is uniform in sizing, high in sizing efficiency, capable of improving the surface function of the fiber effectively, stable in sizing, free from size waste and low in production cost.

Description

technical field [0001] The invention relates to the technical field of fiber production, in particular to a polyimide fiber sizing device. Background technique [0002] Polyimide fiber refers to the fiber containing aramid structure in the molecular chain. From the foreign research and development in the 1960s to the current domestic focus, the development of polyimide fiber is gradually soaring, and the performance is gradually improving, but Polyimide fiber has always been in a state of low strength and unstable performance, and technological breakthroughs cannot overcome barriers. Polyimide fiber has the advantages of low density, high strength, high modulus, radiation resistance, flame retardancy, high temperature resistance, low temperature resistance, stable chemical properties, low dielectric, low water absorption, etc., and has great potential, so it is used in aviation, Aerospace, ships, automobiles, nuclear power, fire protection fields can be widely used. [000...

Claims

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Application Information

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IPC IPC(8): D06B21/00D06B13/00D06B23/14D06B15/00D06B23/20D06M11/38D06M101/30
CPCD06B13/00D06B15/00D06B21/00D06B23/14D06B23/20D06M11/38D06M2101/30
Inventor 韩恩林刘少飞牛鸿庆武德珍
Owner JIANGSU XIANNUO NEW MATERIAL TECH
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