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Super high molecular weight polyethylene gel method for continuous producing direct spinning fine denier filament

A technology of ultra-high molecular weight and production method, which is applied in the field of continuous direct-spun fine-denier yarn production by ultra-high molecular weight polyethylene jelly method, which can solve the problems of stable increase in processing and quality, poor uniformity, etc., and achieve excellent performance and uniform quality Stable, flexible and applicable effects

Inactive Publication Date: 2007-07-11
SINOTEX INVESTMENT & DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] An object of the present invention is to solve the problem that the monofilament or tow of the fiber produced by the above-mentioned prior art has a relatively high fineness and poor uniformity, so that it increases the difficulty in the processing and quality stability of subsequent products, and also limits its quality. To solve the problem of applicable scope, provide a production method of ultra-high molecular weight polyethylene jelly method continuous direct spinning fine denier yarn with reasonable and compact process flow, stable process control, flexible and applicable operation, and is conducive to improving product quality and uniformity

Method used

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  • Super high molecular weight polyethylene gel method for continuous producing direct spinning fine denier filament
  • Super high molecular weight polyethylene gel method for continuous producing direct spinning fine denier filament

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In Figure 1, the screened particle size distribution accounts for more than 90% of the total weight, and the ultra-high molecular weight polyethylene A with a viscosity-average molecular weight of 4.4 million ± 200,000 is mixed with antioxidant mixture 1 to form an ultra-high molecular weight polyethylene A. 0.2-1% of the weight ratio of high-molecular-weight polyethylene A is added, and the antioxidant mixture is compounded with triphosphite and tetraerythritol ester in a relative ratio of 30-60%; the solid content is 20-30% Add the first solvent in proportion, the first solvent 2 is paraffin oil, feed the above-mentioned raw materials into the kettle 4, heat, stir, homogenize and mix, the temperature range is 60-120°C, and the viscosity-average molecular weight of the raw materials is 4-5×10 6 , the rotating speed of the stirring blade 3 is 20~100rpm. Another kind of viscosity-average molecular weight is 4 million ± 200,000, but the ultra-high molecular weight polyeth...

Embodiment 2

[0057] Operate by the process parameter of example 1, manufacture fiber by the process route of Fig. 2.

[0058] Using the stretching process shown in Figure 2, the dried dry rubber filaments are stretched for 40-47 steps in two stages, and then wound and formed at 55 points to become primary products.

[0059] To improve the performance of the fiber, the tow wound at 55 places can be wound and formed at 67 places through stretching and shaping links 56-66 again. Its winding speed depends on the post-drawing ratio (winding speed = total post-drawing multiple K × unwinding wire speed, according to needs, the unwinding wire speed can be 10-30 m / min, the total post-drawing The multiple can be 2-5 times).

[0060] Main process parameters:

[0061] The temperatures of 58, 61 and 64 were 140°C, 152°C, 155°C, 159°C, respectively.

[0062] Inlet velocity V 57 =20m / min, exit speed V 66 =43.9, winding speed V 67 =44.1

[0063] Average properties of finished filaments wound at 67:...

Embodiment 3

[0069] Operate by the process parameter of example 1, main process parameter:

[0070] Add ultra-high molecular weight polyethylene (viscosity average molecular weight: 4.4 million) and the first solvent (white mineral oil) in the ratio of 1:3 (w.t.%) to kettle 4 . The heating temperature is 70°C, the stirring speed is 80rpm, and the residence time is 30min.

[0071] The ultra-high molecular weight polyethylene (viscosity-average molecular weight: 4 million) and the first solvent in the kettle 8 are prepared into a solution with a concentration of 2%.

[0072] The heating temperature is 140°C, the stirring speed is 60rpm, and the residence time is 35min.

[0073] The weight ratio of metering device 9 and 10 is 4:19.

[0074] Kettle 16 was kept at a constant temperature of 90°C.

[0075] The temperature of the dissolution extrusion device 18 was 260°C.

[0076] Spinneret hole diameter 0.8mm

[0077] Carry out continuous operation according to the process in Figure 1, the t...

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Abstract

The invention relates to a manufacturing method for continuous direct spinning fine denier yarn by uhmwpe jelly method, belonging to the spinning area and solving the problem that the single yarn or yarn beam generated by prior technology is on the high side and bad uniformity so that the difficulty for stability of manufacturing and quality of subsequent product is enhanced and the applicable range is limited. The method is provided with reasonable and compact process flow, stable process control, skillful operation and improving the quality and uniformity of product. By the method continuous stable spinning in line is realized in process parameters and the production efficiency is improved. The labor cost and intensity are lessened. Because there is less turnover link in the middle of process it is favor of decreasing producing consumption and uncontrollable factors. Under the stable running, uhmwpe fine denier yarn or yarn beam with even and stable quality, and good performance is provided.

Description

technical field [0001] The invention relates to the field of textiles, and relates to a production method of ultra-high molecular weight polyethylene jelly method for continuous direct spinning of fine denier yarns. Background technique [0002] At present, the methods of producing tow or fiber from ultra-high molecular weight polyethylene at home and abroad can be divided into two representative production processes: jelly breakpoint spinning and continuous direct spinning according to the characteristics of the process flow. In these existing technological schemes, the jelly breakpoint spinning route is long, the process turnover process is complicated and time-consuming, the manual operation is large, the consumption is high, the jelly yarn collected after the breakpoint has poor stability, and the performance of the intermediate product is low. Control lag, the stability and uniformity of the final product quality are difficult to be guaranteed, etc. However, the fiber ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/00D01D5/06D01D1/02D01D1/10D01F6/04D01F1/10
Inventor 冯向阳沈文东刘清华项朝阳刘劲波
Owner SINOTEX INVESTMENT & DEV CO LTD
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