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Production technology of continuous fiber reinforced thermoplastic composites (CFRTP) pultruded profiles

A technology of reinforced thermoplastic and continuous fiber, applied in the direction of coating, etc., can solve the problems that small and medium-sized enterprises cannot bear the burden of equipment and difficult maintenance of equipment, and achieve the effect of optimized performance, strong applicability, and simple equipment

Inactive Publication Date: 2017-05-10
山东极威新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thermoplastic resin pultrusion needs to add some specific equipment: such as impregnation station (powder or melt tank), special high-hardness die steel, precision machining, etc. It is difficult for our small and medium-sized enterprises to bear the burden of equipment. For large Enterprises, the maintenance of related equipment is also very difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: Production of continuous glass fiber reinforced polypropylene rods

[0042] (1) Lay out the continuous fiber through the creel, and keep the continuous fiber in the same plane through the threading row; then, under the action of floating tension roller, differential dispersion roller and other round rollers, the continuous glass The fiber is stretched at 1000g / ㎡, and then coated with the extruded molten thermoplastic resin. After passing through the W-shaped mold cavity, after being rolled and cooled by continuous metal rollers, it is curled and wound to obtain a continuous fiber reinforced prepreg tape. After the completion, the strip material is cut to make the prepreg strip into a prepreg strip line with a width of 15mm;

[0043] (2) Place the prepreg tape prepared in step (1) on the unwinding reel, turn on the traction, the traction speed is 1.5m, pull the prepreg tape to enter the preheating zone, the preheating temperature is 185°C, so that It is softe...

Embodiment 2

[0044] Example 2: Production of continuous basalt fiber reinforced polypropylene rods

[0045] (1) Lay out the continuous fiber through the creel, and keep the continuous fiber in the same plane through the threading row; then, under the action of floating tension roller, differential dispersion roller and other round rollers, the continuous basalt The fiber is stretched at 1000g / ㎡, and then coated with the extruded molten thermoplastic resin. After passing through the W-shaped mold cavity, after being rolled and cooled by continuous metal rollers, it is curled and wound to obtain a continuous fiber reinforced prepreg tape. After the completion, the strip material is cut to make the prepreg strip into a prepreg strip line with a width of 25mm;

[0046] (2) Place the prepreg tape prepared in step (1) on the unwinding reel, turn on the traction, the traction speed is 1.8m, pull the prepreg tape to enter the preheating zone, the preheating temperature is 182°C, so that It is softe...

Embodiment 3

[0047] Embodiment 3: Production of continuous carbon fiber reinforced nylon 6 bars

[0048] (1) Lay out the continuous fiber through the creel, and keep the continuous fiber in the same plane through the threading row; then, under the action of floating tension roller, differential dispersion roller and other round rollers, the continuous basalt The fibers are stretched at 200g / ㎡, and then coated with extruded molten thermoplastic resin. After passing through the W-shaped mold cavity, after being rolled and cooled by continuous metal rollers, curling is carried out to obtain continuous fiber-reinforced prepreg tapes. After the completion, the strip material is cut to make the prepreg strip into a prepreg strip line with a width of 25mm;

[0049] (2) Place the prepreg tape prepared in step (1) on the unwinding reel, turn on the traction, the traction speed is 2m, pull the prepreg tape to enter the preheating zone, the preheating temperature is 242°C, so that After softening, i...

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PUM

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Abstract

The invention discloses a production technology of continuous fiber reinforced thermoplastic composites (CFRTP) pultruded profiles, comprising the steps: (1) leading out continuous fiber through a creel, and keeping the continuous fiber in the same plane through a silk-through shelf; then, spreading the continuous fiber to the specified areal density under the action of floating tension rollers and differential dispersion rollers, next, applying molten thermoplastic resin, passing through a W mould cavity, rolling and cooling with continuous metal rollers, curling and rolling-up to obtain continuous fiber reinforced prepreg tapes, and slitting the prepreg tapes into prepreg strip lines with the same width upon completion of preparation; (2) putting the prepreg strip lines on a reel, starting a tractor to pull the prepreg strip lines into a preheating area for softening, then leading the prepreg strip lines into a mould, pulling and leading out the prepreg strip lines after hot modeling, transfer molding and cold molding of the prepreg strip lines in the mould, and then performing later cutting and processing to obtain the finished product.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a production process of continuous fiber-reinforced thermoplastic composite pultrusion profiles. Background technique [0002] The pultrusion process is mainly used to produce composite products and is the most widely used process in the composite material industry. In recent years, with the increasingly prominent environmental problems, the use of pultrusion to manufacture continuous fiber-reinforced thermoplastic composites has attracted more and more attention. [0003] Although thermoplastic pultrusion has strong flexibility and impact resistance, good damage resistance, high damage tolerance, replastic, weldable, good biocompatibility, recyclable, no curing reaction during molding, It has the characteristics of fast molding speed and reusability, but it has not been widely used in commercial applications so far. The reason is that this process is co...

Claims

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Application Information

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IPC IPC(8): B29C70/52B29C70/54B29B15/14
CPCB29C70/521B29B15/122B29B15/14B29C70/525
Inventor 周海燕
Owner 山东极威新材料科技有限公司
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