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Fiber preheating device and pultrusion preheating method for pultrusion composite material products

A composite material and heating method technology, which is applied in the field of fiber heating devices, can solve problems such as product defects, uneven speed fiber heating, etc.

Active Publication Date: 2021-05-04
ZHONGFU CARBON FIBER CORE CABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adopting the device and preheating method of the present invention can improve production efficiency and solve the problem that in the existing pultrusion molding process, the speed is too fast and the fibers are heated unevenly, which leads to product defects

Method used

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  • Fiber preheating device and pultrusion preheating method for pultrusion composite material products
  • Fiber preheating device and pultrusion preheating method for pultrusion composite material products
  • Fiber preheating device and pultrusion preheating method for pultrusion composite material products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as Figure 1 to Figure 4 , a fiber preheating device for pultruded composite products, which includes a PTFE extruded sheet 1, an electric heating aluminum plate 2 fixed to the PTFE extruded sheet 1 by bolts, and a power plug connected to the electric heating aluminum sheet 2 3. Both the PTFE extruded rubber plate 1 and the electric heating aluminum plate 2 are provided with 50 counterbore holes 7 of equal size, and the small mouth 4 passes through the counterbore holes on the PTFE extruded rubber plate 1 and the electric heating aluminum plate 2; The outer periphery of the PTFE extrusion board 1 is provided with a through hole 5 matched with the pre-cured mold tooling,

[0029] The two sides of the electric heating aluminum plate 2 are respectively provided with temperature measuring holes 6 .

[0030] The pre-curing mold is composed of PTFE extrusion board, small nozzle and electric heating aluminum plate, in which the small nozzle is installed on the correspond...

Embodiment 2

[0032] A fiber heating method for a pultruded composite product, comprising the steps of:

[0033] Step a: Tightly connect the PTFE extrusion board 1 and the electric heating aluminum board 2 with bolts through the screw holes;

[0034] Step b: install small nozzles 4 in sequence on the counterbore corresponding to the PTFE extrusion board 1 and the electric heating aluminum board 2;

[0035] Step c: through the through hole 5 reserved on the PTFE extruded sheet 1, fix the spliced ​​PTFE extruded sheet 1, the electric heating aluminum plate 2 and the small nozzle 4 on the pre-cured mold;

[0036] Step d: Pass the glass fiber through the PTFE extrusion board 1 and the small nozzle 4 on the electric heating aluminum plate 2, plug in the power plug 3 above the electric heating aluminum plate 2 and heat it to 80-140°C;

[0037] Step e: Under the traction of the tractor, the glass fiber passes through the resin glue tank, and then passes through the PTFE extrusion board 1 for extr...

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Abstract

The invention discloses a fiber preheating device for pultrusion composite material products and a pultrusion method thereof, comprising a PTFE extruded rubber sheet (1), and an electrically heated aluminum plate fixed to the PTFE extruded rubber sheet (1) by bolts (2), connected to the power plug (3) on the top of the electric heating aluminum plate (2); the above described PTFE extruded rubber plate (1) and the electric heating aluminum plate (2) are all provided with the counterbore of the same number and size, The small nozzle (4) passes through the counterbore on the PTFE extruded sheet (1) and the electric heating aluminum plate (2); the outer periphery of the PTFE extruded sheet (1) is provided with a through hole ( 5), the two sides of the electric heating aluminum plate (2) are respectively provided with temperature measuring holes. The invention can effectively increase the pultrusion speed in the pultrusion production process, has a good preheating effect on glass fibers pre-impregnated with resin, can improve the mechanical properties of pultrusion composite material products, and improves the efficiency of pultrusion production and benefits.

Description

technical field [0001] The invention relates to a fiber heating device in the pultrusion process of composite materials and a pultrusion preheating method thereof. [0002] technical background [0003] There are various molding processes for glass fiber reinforced plastics, among which the pultrusion molding process is a process with a high degree of automation. This molding process is continuous production and has high efficiency. It is an important one in the current glass fiber reinforced plastics molding technology. The pultrusion molding process generally uses continuous glass fiber yarns to impregnate the resin, and the cross-sectional shape of the product is formed through the yarn splitting plate and the preformed plate, and then enters the heating mold for curing and molding. The traditional pultrusion method mainly uses molds or pre-curing molds for curing and molding. Because it takes a certain amount of time for the heat of the curing mold to transfer to the fibe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/54B29C70/52
CPCB29C70/52B29C70/528
Inventor 任桂芳徐俊王志伟张春颖王赵雨刘传瑞
Owner ZHONGFU CARBON FIBER CORE CABLE TECH