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Double-sided melting and impregnating equipment and method for continuous fiber-reinforcing adhesive tape

A continuous fiber, melt impregnation technology, applied in the coating and other directions, can solve the problems such as the inability to ensure good infiltration of the fiber by the resin, uneven fiber dispersion in the prepreg tape, and decreased product quality stability, and achieve long-term continuous and stable production. , Impregnation effect is balanced, the effect of uniform flow

Active Publication Date: 2014-05-21
GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this equipment simply strengthens the infiltration of resin on carbon fibers through impregnating rollers, which cannot control the resin melt to enter the die cavity uniformly, and cannot keep the pressure of the entire cavity stable. The risk of excessive local pressure increases, which is easy to cause fiber Twisted or broken, does not guarantee good impregnation of fibers by resin
In addition, the equipment determines the thickness of the prepreg tape by adjusting the resin content, which is prone to the defect of uneven fiber dispersion in the prepreg tape, which reduces the quality stability of the product

Method used

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  • Double-sided melting and impregnating equipment and method for continuous fiber-reinforcing adhesive tape
  • Double-sided melting and impregnating equipment and method for continuous fiber-reinforcing adhesive tape
  • Double-sided melting and impregnating equipment and method for continuous fiber-reinforcing adhesive tape

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] In this embodiment, a double-sided melt impregnation device for continuous fiber reinforced adhesive tape, such as figure 1 As shown, the melt impregnation head 10 is provided with a fiber channel 12 with a rectangular cross-section. The fiber channel includes a fiber pre-dispersion area A, a resin-impregnated fiber area B, and a fiber re-dispersion area C that are sequentially connected and continuously communicated; the fiber pre-dispersion area There is a pre-dispersion device in the middle, and a double-sided distribution flow channel 1 for resin melt distribution is set in the resin-impregnated fiber area; in the fiber re-dispersion area, the fiber channel is wavy, and the upper and lower sides of the fiber channel are equipped with re-dispersion devices ; The end outlet of the fiber channel is rectangular, and the adhesive tape 2 is placed in the fiber channel.

[0047] Among them, the redispersion device in the fiber redispersion zone such as image 3 As shown, ...

Embodiment 2

[0066] The double-sided melting impregnation equipment of a kind of continuous fiber reinforced adhesive tape of this embodiment, compares with embodiment 1, and its difference is: as Figure 4 As shown, in the fiber redispersion zone, the redispersion device includes an upper dispersing roller 8 and a lower dispersing roller 9, an upper dispersing roller is arranged above the fiber passage, a lower dispersing roller is arranged below the fiber passage, an upper dispersing roller and a lower dispersing roller Alternately distributed and arranged at equal intervals;

[0067] The upper dispersing roller and the lower dispersing roller have the same structure, both are smooth rollers with a square cross-section, the length of each side of the square is 5-60mm, and the corners of each square are rounded at 90-150°; each upper dispersing roller and lower dispersing roller There are electric heating rods inside the rollers, and the heating temperature is 60-400°C; between the adjace...

Embodiment 3

[0069] The double-sided melting impregnation equipment of a kind of continuous fiber reinforced adhesive tape of this embodiment, compares with embodiment 1, and its difference is: as Figure 5 As shown, in the fiber redispersion zone, the redispersing device includes an upper dispersing roller 8 and a lower dispersing block 5, an upper dispersing roller is arranged above the fiber channel, a lower dispersing block is provided below the fiber channel, and the upper dispersing roller and the lower dispersing block Alternately distributed and arranged at equal intervals, the fiber channel is wavy, the upper dispersing roller is placed in the trough, and the distance between the outer edge and the trough is 1-15mm;

[0070] Among them, the upper dispersing roller is a smooth roller with a square cross-section, the length of each side of the square is 5-60mm, and the corners of each square are rounded corners of 90-150°; each upper dispersing roller and the dispersing roller are eq...

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Abstract

The invention discloses double-sided melting and impregnating equipment and a method for a continuous fiber-reinforcing adhesive tape. According to the equipment, a fiber pre-dispersion zone, a resin impregnation fiber zone and a fiber re-dispersion zone are arranged in a melting and impregnating equipment head; a pre-dispersion device is arranged in the pre-dispersion zone, and a double-sided distribution runner for distributing a resin melt is arranged in the resin impregnation fiber zone; in the fiber re-dispersion zone, a fiber channel is wavy, and re-dispersion devices are arranged on the upper side and the lower side of the fiber channel; an outlet at the tail end of the fiber channel is rectangular. The method comprises the following steps: firstly predispersing and preheating continuous long fibers, then entirely coating and impregnating through a double-sided distribution runner, and delivering out of the fiber channel after performing fiber redispersion treatment. According to the double-sided melting and impregnating equipment and the method, the impregnation effect of the resin melt to the continuous fiber in the adhesive tape can be balanced, the purposes of entire coating, permeation and impregnation can be achieved, the phenomenon that single-sided coating of the fibers is not tight can be avoided, long-time continuous stable production can be realized, and the output and quality of products can be both increased greatly.

Description

technical field [0001] The invention relates to the technical field of thermoplastic resin molding, in particular to a double-sided melt impregnation equipment and method for continuous fiber reinforced adhesive tape. Background technique [0002] Continuous long fiber reinforced tape is a composite material with thermoplastic resin as the matrix and reinforced fibers arranged in one direction and continuously. It has a wide range of applications in the fields of automobile, construction, aerospace and military industry, such as midsole guards and rear doors of auto parts. The weak position of the board and the finishing box bracket is compounded with continuous fiber reinforced tape, which can play the functions of reinforcement, weight reduction, and prolonging the service life of the parts. However, in the actual production process, the impregnation effect of the continuous fibers on the tape is often affected due to the unreasonable structure of the melt impregnation equ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B15/14
Inventor 王琪李永华陈大华宋威黄有平张超陈春华欧相麟
Owner GUANGZHOU KINGFA CARBON FIBER NEW MATERIALS DEV
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