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A method of manufacturing a polymer composite member by use of two or more resins

A technology of composite materials and polymers, applied in the field of resin infusion technology, can solve problems such as high material costs

Active Publication Date: 2011-09-07
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These additions often result in significantly higher material costs, and the choice of resin for a given product must therefore be a compromise between optimal material properties and cost

Method used

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  • A method of manufacturing a polymer composite member by use of two or more resins
  • A method of manufacturing a polymer composite member by use of two or more resins
  • A method of manufacturing a polymer composite member by use of two or more resins

Examples

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Embodiment Construction

[0031] figure 1 A known mold arrangement 1 is schematically shown for producing fiber composite elements by using the resin transfer molding technique. The mold arrangement 1 comprises a first mold part 2 and a second mold part 3, which are usually treated with a release agent and possibly also coated before use. In this figure and the ones that follow, the first mold part 2 and the second mold part 3 are shown as rigid elements, but the second mold part 3 could also be flexible, such as by being fastened to the first mold part by using a sealing band. Plastic sheet on mold part 2. A fibrous layer 4 , usually in the form of a mat, and possibly a release cloth (not shown) is placed on the first mold part 2 and the second mold part 3 is placed on top of it. Resin is introduced into the mold cavity 5 and into the fibers 4 via resin inlets 6 , also called resin infusion ports. The preparation of the resin is not included in the figures, but how this part of the process is accom...

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Abstract

The present invention relates to a method of manufacturing a polymer composite member by a resin infusion technique. The method comprises providing a mould cavity (5) wherein a reinforcement material (4) is arranged. The mould cavity has at least one first resin inlet for a first resin and at least one second resin inlet (6b) for a second resin, which first and second resins have different mechanical properties after moulding. The method further comprises concurrently leading the first resin into a first region (5a) of the mould cavity via the first inlet and leading the second resin into a second region (5b) of the mould cavity via the second inlet, and transferring the resins into the reinforcement material so that the resins at least partly merge in a third region of the mould cavity. For this application, the first resin is typically used for a root end of the wind turbine blade or part of wind turbine blade.

Description

technical field [0001] The present invention relates to a method of manufacturing a polymer composite material element by using two or more resins, and more particularly to a resin infusion technique in which a plurality of resins are simultaneously injected. Background technique [0002] Polymer composites such as fiber reinforced composites are used in the wind turbine industry, eg for wind turbine blades, and one possible manufacturing process is resin transfer molding assisted by vacuum. Resin materials are eg epoxy, polyester or vinyl ester, and each material is present in a range of products including those with at least one additive to improve properties such as fracture toughness and stiffness characteristic products. These additions often result in significantly higher material costs, and the choice of resin for a given product must thus be a compromise between optimal material properties and cost. [0003] Thus, an improved method of manufacturing polymer composi...

Claims

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Application Information

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IPC IPC(8): B29D99/00B29C70/48B29C70/34F01D5/00F03D1/06
CPCB29L2031/085B29K2063/00B29C70/342F03D1/065B29K2105/167B29K2067/06B29K2021/00B29K2031/00B29L2031/08Y02E10/72B29C70/48Y02E10/721B29K2105/16B29C70/0035Y02P70/50
Inventor M·D·哈格K·S·尼尔森
Owner VESTAS WIND SYST AS
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