Sleeve connecting method and product

A technology of casing connection and connection method, which is applied in the field of preparation of structural composite materials, can solve the problems of complicated process, unsatisfactory, high cost, etc., and achieve the effects of simplifying the part process, reducing production cost, and saving development

Inactive Publication Date: 2017-01-04
良程(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned process is relatively complicated, and the size of the casing needs to be customized according to different connectors, and the cost is high
[0008] In addition, none of the connection methods described in the above patent documents can be directly applied to continuous fiber-reinforced casing materials, which are limited by the characteristics of the casing mater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The implementation process of the technical solution of the present invention is as follows:

[0040] (1) Connect two carbon fiber composite material straight pipes with a length of 20cm, an outer diameter of 5cm and a wall thickness of 1mm, and grind them to make the surface rough;

[0041] (2) Take a continuous T300 carbon fiber satin fabric sleeve with a diameter of 5cm, a length of 10cm and a thickness of 0.125mm, and then slightly compress the carbon fiber satin fabric sleeve to expand the inner diameter, then put it on the carbon fiber straight tube, and smooth the fabric Afterwards, the two tubes are covered with 5cm-long fabrics respectively;

[0042] (3) Take a layer of epoxy resin film with a density of 30% to 35% of the carbon fiber satin fabric sleeve. The film size can at least completely cover the joint area to be covered by the carbon fiber sleeve. The area to be covered by the casing joint casing;

[0043] (4) Two layers of epoxy resin film and two lay...

Embodiment 2

[0049] (1) Take two PMI foam round tubes with a bending diameter of 15 cm and a diameter of 3 cm, and the two can be connected together to form a circle;

[0050] (2) Take an epoxy resin film with layer density of 30% to 35% of T700 carbon fiber plain weave fabric or T700 carbon fiber twill fabric for reinforcement. The size of the film can at least completely cover the area to be covered by the carbon fiber sleeve. The film is spread over the entire surface of the foam;

[0051] (3) Take a continuous T700 carbon fiber plain weave sleeve or T700 carbon fiber twill fabric sleeve with a diameter of 5cm, a length of 55cm, and a thickness of 0.33mm, then slightly compress the carbon fiber fabric sleeve to expand the inner diameter, and then cover two pieces of PMI foam On the bent round tube, flatten the fabric so that the carbon fiber fabric sleeve has an overlap of about 7 cm at the joint;

[0052] (4) A layer of epoxy resin adhesive film is covered in the overlapping area to f...

Embodiment 3

[0059] The implementation process of the technical solution of the present invention is as follows:

[0060] (1) Connect two carbon fiber composite material straight pipes with a length of 20 cm, an outer diameter of 5 cm, and a wall thickness of 1 mm, and grind them to make the surface rough;

[0061] (2) Take an S2 glass fiber plain weave sleeve with a diameter of 5cm, a length of 10cm, and a thickness of 0.125mm, then slightly compress the carbon fiber plain weave sleeve to expand the inner diameter, then put it on the carbon fiber straight pipe, smooth the fabric and use it There are 5cm long fabrics on the two tubes to cover the tubes respectively;

[0062] (3) Take an epoxy resin film with a layer density of 25 to 30% of that of the S2 glass fiber plain fabric sleeve. The size of the film can at least completely cover the joint area to be covered by the carbon fiber sleeve, and spread the film on the The area to be covered by the casing joint casing;

[0063] (4) Lay t...

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PUM

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Abstract

The invention relates to a sleeve connecting method. A continuous fiber reinforcement fabric sleeve is arranged on components needing to be connected in a sleeving manner, then resin is coated or a resin coating is pasted so that the fabric sleeve is soaked with the resin, or a continuous fiber reinforcement fabric resin prepreg sleeve is arranged on the components needing to be connected in a sleeving manner, and finally a vacuum bag or a plastic sleeve contracting after heating is used for solidification so as to enable the connecting position of the components needing to be connected to be covered with a continuous fiber reinforcement composite material. The invention further discloses a connecting product which is obtained through the above sleeve connecting method and is at least provided with the connecting position covered with the continuous fiber reinforcement composite material. According to the sleeve connecting method and the product, the components needing to be connected serve as mandrels of the final product, the development cost for dies is saved, the advantage that the fabric sleeve is deformable is sufficiently used, connection between the different components can be good, and the components can be connected in a clamping manner; and a load-carrying structure of the composite material of the sleeve acts and can serve as a main load-carrying structure, so that the production cost is reduced, and the process of the product is simplified.

Description

technical field [0001] The invention relates to the technical field of preparation of structural composite materials, in particular to a casing connection method and a product. Background technique [0002] Continuous fiber-reinforced resin matrix composites have high specific strength and specific stiffness, and are widely used in aerospace, oil pipelines, high-pressure vessels, civil sports equipment and other fields. Continuous fiber reinforced resin matrix composites are also commonly used for further reinforcement of other materials and structures, such as reinforcement of building walls. [0003] However, in practical applications, it is often necessary to prepare parts with complex structures, such as the frame of a bicycle, the fuselage assembly of an airplane, and the like. However, the direct preparation of these complex structures is not only technically difficult, but also has a relatively high manufacturing cost. The common solution is to prepare simple compone...

Claims

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Application Information

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IPC IPC(8): B29C70/34B29C70/84
CPCB29C70/342B29C70/845
Inventor 冯跃飞李宇杰
Owner 良程(北京)科技有限公司
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