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Method for improving mechanical properties of carbon fiber structural member

A technology of carbon fiber and structural parts, which is applied in the field of improving the mechanical properties of carbon fiber structural parts, can solve problems such as misalignment, position deviation, and poor consistency, and achieve the effects of improving bending resistance, impact resistance, and impact resistance

Inactive Publication Date: 2020-12-29
深圳市碳创新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of these lead to the offset and dislocation of the filamentary or strip-shaped reinforcements during the molding stage, and the consistency is poor

Method used

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  • Method for improving mechanical properties of carbon fiber structural member
  • Method for improving mechanical properties of carbon fiber structural member
  • Method for improving mechanical properties of carbon fiber structural member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The invention provides a method for improving the mechanical properties of carbon fiber structural parts, the specific steps are as follows:

[0036] Two-dimensional amorphous thin slices are selected. The two-dimensional amorphous thin slices are selected from the current large-scale commercial amorphous wide strips. The thickness of the wide strips is conventional 30-50 microns. The forming method is the current mature and commercialized rapid quenching strip process. , the material can be zirconium-based, iron-based, nickel-based, cobalt-based and other commercial amorphous wide-band materials; it is preferably zirconium-based amorphous with the best comprehensive mechanical properties, for example, the common ZrCuNiAlEr formula system, which is added with The transition metal element Er includes: 30-70% Zr, 5-40% Cu, 5-30% Ni, 0-20% Al and 0-10% transition metal element in atomic percentage;

[0037]Two-dimensional amorphous flakes are added in an appropriate form a...

Embodiment 2

[0042] Badminton racket products:

[0043] 1. Firstly, the zirconium-based Zr63.7Cu17.15Ni9.8Al7.35Er2 component formula system is preferably selected, and a non-wafer with a thickness of 30-50 microns is obtained by vacuum stripping process;

[0044] 2. Place the amorphous wafer in a precision punching machine with a fit tolerance of less than 10 microns, and use 5 layers as the batch punching quantity to obtain an amorphous sheet layer with micro-holes. The diameter of the micro-holes is 1 mm, and the hole spacing 10 mm, two adjacent rows of micro-holes are arranged in a misplaced interval;

[0045] 3. Brush the surface of the two-dimensional amorphous sheet with micropores with 40% resin by weight. The resin includes the epoxy resin and curing agent of the matrix, mix according to the formula ratio, and let it stand to dry;

[0046] 4. Add the two-dimensional amorphous sheet to the outer area of ​​the badminton racket. The carbon fiber layer and the two-dimensional amorpho...

Embodiment 3

[0050] Plate:

[0051] 1. For conventional regular sheets, first select the ZrCuNiAl composition formula system, and use the vacuum stripping process to obtain non-wafer sheets with a thickness of 30-50 microns, and the sheets are commercial continuous coils;

[0052] 2. In the manufacturing process of carbon fiber prepreg, the continuous amorphous coil is wound with carbon fiber in the form of a reinforcement at the same time, and passed through a hot roll to form a carbon fiber / two-dimensional amorphous sheet hybrid prepreg (such as figure 2 );

[0053] 3. The carbon fiber / two-dimensional amorphous flake mixed prepreg is blanked and laminated according to the conventional method, and finally vacuum molded at 135-145°C and kept for 20-30 minutes to obtain the required sheet;

[0054] 4. After testing, the impact resistance of the plate is increased by about 25%, and its vibration attenuation cycle can be shortened by about 15% (such as Figure 5 , Figure 6 ).

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Abstract

The invention discloses a method for improving mechanical properties of a carbon fiber structural member. The method comprises the steps of selecting a two-dimensional amorphous sheet; adding the two-dimensional amorphous sheet in a proper form according to the actual conditions such as shape and service state of a product; and for some products with small shapes or large curvature changes, punching appropriate tiny round holes in the two-dimensional amorphous sheet in advance by employing a precise punching machine. Therefore, the mechanical properties such as bending property of the carbon fiber structural member are improved greatly and the impact resistant characteristic is improved obviously. The used amorphous sheet is a two-dimensional material and is added into a carbon fiber interlayer, so that hidden dangers that the quality is uncontrollable due to displacement of morphological enhancers such as amorphous whiskers and amorphous zones used in some previous patents in a die curing process are avoided, and meanwhile, the required manual time consumption is very low, so that the method has obvious economical benefits.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of improving the mechanical properties of carbon fiber structural parts, and in particular to a method for improving the mechanical properties of carbon fiber structural parts. Background technique [0002] Carbon fiber is a special fiber with excellent mechanical properties, its density is only 1.8g / cm3, its modulus exceeds 200GPa, and its tensile strength is generally above 3500Mpa, so it has very high specific modulus and specific strength. , automotive lightweight and other fields have a very wide range of applications. [0003] However, carbon fiber is a tow-like one-dimensional material with very obvious unidirectionality. Therefore, in order to take into account the load conditions in multiple directions, when making carbon fiber structural parts, the layup needs to be alternately laminated at different angles. However, in the same ply, the carbon fiber filaments are distrib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34B29C70/54B29C70/02
CPCB29C70/34B29C70/54B29C70/028
Inventor 何亮刘栋材郭早阳陈良斌
Owner 深圳市碳创新材料有限公司