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Slurry concentration adjusting method and adjusting system for preparing thermoplastic prepreg with slurry method

A slurry concentration and adjustment system technology, applied in the field of prepreg, can solve the problem of resin slurry concentration becoming thinner

Pending Publication Date: 2020-01-03
JIANGSU ZHAOJUN NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: In order to solve the problem that the concentration of resin slurry gradually becomes thinner with production in the continuous production of thermoplastic prepreg by slurry method, the present invention provides a slurry concentration adjustment method and adjustment system for preparing thermoplastic prepreg by slurry method

Method used

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  • Slurry concentration adjusting method and adjusting system for preparing thermoplastic prepreg with slurry method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 , the slurry concentration adjustment system for preparing thermoplastic prepregs by the slurry method of the present invention includes a slurry dispersion tank 2, a rough slurry mixing tank 5, a buffer rubber mixing tank 7, a sample detection tank 10, a high-concentration slurry storage tank 11, Dipping tank 13.

[0028] The slurry dispersion barrel 2 is used to prepare the slurry, and the concentration of the slurry is the actual slurry concentration required in the production of thermoplastic prepregs. The slurry dispersion barrel 2 is provided with a first mechanical agitator 1-a (using gas source drive) to agitate the slurry to disperse it evenly. Along the slurry flow method, the slurry dispersing barrel 2 is sequentially connected to the coarse slurry mixing barrel 5 , the buffer glue mixing barrel 7 and the glue mixing tank 13 . The slurry coarse mixing tank is used for storage and buffering of low-concentration slurry, which is used as a bac...

Embodiment 2

[0037] This embodiment relates to a practical application of the system in Embodiment 1.

[0038] 1. Add nylon 6 resin powder, water, additives, etc. into the dispersion tank 2, and set the first mechanical agitator 1-a with a rotation speed of 600r / min to disperse the slurry b. Prepare two kinds of slurry with different concentrations: slurry a and slurry b, the concentration of slurry a: 35%, the concentration of slurry b: 20%, the concentrations are all in mass percentage; the viscosity of slurry b is 3.41mPa.s.

[0039] 2. The slurry a is transferred to the high-concentration slurry tank 11 for standby, and the slurry b is transported to the rough mixing tank 5 for standby. The rough mixing barrel 5 is connected to the buffer glue mixing barrel 7, and the low-concentration slurry slurry b is transported into the buffer glue mixing barrel 7 by the first pump 6-a.

[0040] 3. A first liquid level gauge 4-a is provided in the rough mixing tank 5. When the liquid level of the...

Embodiment 3

[0046] This embodiment relates to a practical application of the system in Embodiment 1.

[0047] 1. Add polyether ether ketone resin powder, water, additives, etc. into the dispersion tank 2, and set the first mechanical agitator 1-a with a rotation speed of 800r / min to disperse the slurry b. Prepare two kinds of slurry with different concentrations: slurry a and slurry b, the concentration of slurry a: 50%, the concentration of slurry b: 25%, the concentrations are all in mass percentage; the viscosity of slurry b is 4.33mPa.s.

[0048] 2. The slurry a is transferred to the high-concentration slurry tank 11 for standby, and the slurry b is transported to the rough mixing tank 5 for standby. The rough mixing barrel 5 is connected to the buffer glue mixing barrel 7, and the low-concentration slurry slurry b is transported into the buffer glue mixing barrel 7 by the first pump 6-a.

[0049] 3. A first liquid level gauge 4-a is provided in the rough mixing tank 5. When the liqu...

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Abstract

The invention discloses a slurry concentration adjusting method and adjusting system for preparing thermoplastic prepreg with a slurry method. The adjusting system comprises a slurry coarse preparation barrel, a buffer glue mixing barrel and a dipping groove which are sequentially connected with each other in a flowing direction of slurry; a high-concentration slurry storage tank used for injecting high-concentration slurry into the buffer glue mixing barrel is connected to the buffer glue mixing barrel; the buffer glue mixing barrel is connected with a sample detection tank through a slurry sample conveying pipeline; the sample detection tank is internally provided with a viscometer; and a reflux pipe used for conveying a reflux of the slurry in the dipping groove to a buffer glue mixingbarrel is arranged between the buffer glue mixing barrel and the dipping groove. The invention further provides the corresponding adjusting method. The slurry concentration adjusting method and adjusting system provided by the invention detect and control the viscosity and ensure the stability in the content of resin in the continuous production process of the thermoplastic prepreg prepared with the slurry method.

Description

technical field [0001] The invention relates to a prepreg, in particular to a slurry concentration adjustment method and an adjustment system for preparing a thermoplastic prepreg by a slurry method. Background technique [0002] The production process of thermoplastic prepreg mainly includes melt impregnation method, powder coating method, film calendering method, mud method and so on. The slurry production process has received widespread attention due to its relatively low cost of production equipment and its advantages in impregnating fibers with high-melting-point and high-viscosity resins. The slurry method mainly impregnates the resin powder into the fiber bundle through the slurry, and heats the resin to melt. The resin content and thickness of the prepreg are the key performance parameters of the product. At present, the main technical bottleneck of this process is that the concentration of resin slurry is not controlled: when the fiber passes through the dipping ta...

Claims

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Application Information

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IPC IPC(8): B29C70/52B29C70/54
CPCB29C70/521B29C70/546
Inventor 鲁平才薛胜鲁兆鋆
Owner JIANGSU ZHAOJUN NEW MATERIAL CO LTD
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