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Continuous mold pressing manufacturing process of fan blade thermoplastic composite beam cap

A technology of fan blades and composite materials, which is applied to other household appliances, household appliances, household components, etc., can solve the problems of difficulty in guaranteeing process efficiency and process quality, poor flexibility of process size and shape, and affecting product performance and cost. Recycling, strong designability, and the effect of reducing environmental damage

Active Publication Date: 2019-08-09
泰安市中研复合材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the pultrusion process has many advantages, the size and shape flexibility of the process is poor, which has certain limitations for the manufacture of large-scale variable-section beam caps
The disadvantage of the liquid forming method is that there are unfavorable factors such as low efficiency in the fiber laying process, poor consistency of the laying process, and high material waste rate, which seriously affects the performance and cost of the product.
Most blade manufacturers prefer to use the prepreg vacuum adsorption process to ensure the preparation process effect of the large-length blade spar cap, but with the gradual increase in the thickness and width of the spar cap, the traditional prepreg vacuum adsorption process It is difficult to meet the market demand, and its process efficiency and process quality are becoming more and more difficult to guarantee
Patent CN201210261878.1 proposes an improved vacuum adsorption process to prepare composite material spar caps. This process can be used to effectively improve the manufacturing efficiency and quality of large-thickness spar caps, but when used to prepare large-width spar caps There are still negative factors such as low process efficiency and high risk of process quality

Method used

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  • Continuous mold pressing manufacturing process of fan blade thermoplastic composite beam cap
  • Continuous mold pressing manufacturing process of fan blade thermoplastic composite beam cap
  • Continuous mold pressing manufacturing process of fan blade thermoplastic composite beam cap

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The above-mentioned continuous molding process for the spar cap of a thermoplastic composite material for fan blades specifically includes the following steps: figure 1 as shown,

[0045] Step 1. Prepare a quantitative amount of thermoplastic prepreg wire or prepreg tape according to the size of the pre-designed fan blade spar cap;

[0046] Step 2. Use the prepreg cutting machine to cut and cut the thermoplastic prepreg in batches according to the required size, and cut it into a trapezoidal surface shape. The cutting shape is as follows: figure 2 as shown, figure 2 A top view of a layup for a single prepreg;

[0047] Step 3. Place the trimmed thermoplastic prepreg in a segmented and extended manner; image 3 as shown, image 3 Below is a top view of multiple prepreg layups on the same extension line, image 3 The upper side is the side view of the corresponding prepreg layup, the middle is the largest ply pre-set section, and the number of plies in the other ply...

Embodiment 2

[0064] In another typical embodiment, in step 3, the cut glass fiber prepreg and carbon fiber prepreg are hybridly laminated, that is, five layers of glass fiber prepreg, one layer of carbon fiber prepreg, Lay up in this way until the desired ply thickness is achieved. In the step 4, a hot press is used, and the preheating temperature is set to 40° C.; in the steps 5 and 6, the hot pressing curing temperature is 130° C., the pressure is set to 2 MPa, and the curing time is 4 hours. Other preparation steps are identical with embodiment 1.

Embodiment 3

[0066] In another typical embodiment, in step 3, the cut glass fiber prepreg and carbon fiber prepreg are hybridly laminated, that is, two layers of glass fiber prepreg, one layer of carbon fiber prepreg, Lay up in this way until the desired ply thickness is achieved. In the step 4, the preheating temperature is set to 50° C.; in the steps 5 and 6, the hot press curing temperature is 150° C., the pressure is set to 2 MPa, and the curing time is 3 hours. Other preparation steps are identical with embodiment 1.

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Abstract

The invention discloses a continuous mold pressing manufacturing process of a fan blade thermoplastic composite beam cap. The preparation process comprises the steps of continuously completing cuttingof thermoplastic prepreg in the length direction of the beam cap, layering up the prepreg, conducting heating presetting, mold hot press molding and then cooling, solidifying and demolding on the layered prepreg to finally obtain a finished product. The variable cross section fan blade thermoplastic composite beam cap can be continuously molded and obtained through the technological method of thecontinuous mold pressing manufacturing process. The beam cap is uniform in fiber volume content, stable in quality and flexible in shape and size. Meanwhile, through the process, continuous hot pressmolding and manufacturing can be completed just through one mold, the production efficiency is improved, and the production cost is effectively reduced. The manufacturing cycle is shortened. The market requirements are met. Meanwhile, great convenience is brought.

Description

technical field [0001] The invention relates to a continuous molding manufacturing process of a spar cap of a thermoplastic composite material for a fan blade, and belongs to the technical field of composite material equipment manufacturing technology. Background technique [0002] Wind energy is considered by the whole world to be one of the cleanest, most commercially potential and most dynamic renewable energy currently available. Composite fan blades are the core components of wind turbines to capture wind energy, and their performance directly affects The operating characteristics and costs of the entire unit. [0003] The blade shell of the wind turbine blade is a structural member composed of two composite material half shells. The blade is the main load-bearing part through the spar cap structure in the length direction, so the spar cap is one of the important parts of the wind power blade structure. The level of design and manufacturing quality is important. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54B29L31/08
CPCB29C70/34B29C70/54B29L2031/085
Inventor 张博明白承正刘真岳广全
Owner 泰安市中研复合材料科技有限公司
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