CN210652162U

CN210652162U - Carbon fiber plate for vacuum infusion

Info

Publication number: CN210652162U
Application number: CN201921537675.4U
Authority: CN
Inventors: 李光友; 倪亭; 林凤森; 曲晓东; 殷娇娇
Original assignee: Weihai Guangwei Energy New Materials Co ltd
Current assignee: Weihai Guangwei Energy New Materials Co ltd
Priority date: 2019-09-17
Filing date: 2019-09-17
Publication date: 2020-06-02
Anticipated expiration: 2029-09-17

Abstract

The utility model relates to a carbon fiber plate for vacuum infusion belongs to combined material and makes the field. The upper and lower two sides of the carbon fiber plate main body are covered with upper protection cloth and lower protection cloth, the upper and lower two sides of the two ends of the carbon fiber plate main body are changed into thinning areas from transition areas, the width of the thinning areas is 5-10 mm, the single-side thickness fall between the thinning areas and the upper and lower two sides of the carbon fiber plate main body is 0.3-0.5 mm, and the included angle between the transition areas and the thinning areas is 135-170 degrees. The utility model discloses vacuum is filled with carbon fiber plate production efficiency height, and the stability of resin viscosity in the steeping vat can be guaranteed to the steady quality, prolongs resin live time, has guaranteed fibrous distribution homogeneity and the accurate positioning of protection cloth, has reduced fluffing, die orifice and has blockked up the scheduling problem. Through set up at both sides and reduce thin district and transition district, when being used for vacuum infusion multilayer laminating pre-buried, easily with air escape between the panel, difficult formation gas pocket defect can improve the adhesion between the layer.

Description

Carbon fiber plate for vacuum infusion

Technical Field

The utility model relates to a combined material makes the field, says in detail a vacuum fills uses carbon fiber plate.

Background

As is well known, the vacuum infusion VRIM process is a liquid molding technology for preparing large-size composite products, is an advanced high-performance low-cost composite preparation process in the world at present, and is widely applied in the field of wind power. The VRIM process can be formed at low pressure only by one atmosphere of vacuum pressure without additional pressurization), the whole process can be carried out at normal temperature, the energy consumption is low, the carbon fiber is infiltrated by the resin in a vacuum environment, and the bubbles in the product are few. In the vacuum infusion process, a preformed carbon fiber plate is often used as an embedded reinforcement, and a plurality of layers of carbon fiber plates are mainly laminated.

The carbon fiber plate is one of conventional products in the composite material industry, and the common carbon fiber plate is of a flat plate structure at present. When the carbon fiber plate needs subsequent bonding, two modes are generally adopted, wherein the bonding surface is polished before bonding after molding, and the protective film demolding cloth is paved on the surface during molding, and the protective film is removed before bonding to form a concave-convex surface on the surface. For example, CN201474156U introduces a carbon fiber sheet, the upper and lower surfaces of which are concave-convex surfaces to facilitate adhesion, and a protective film is attached to the surface; CN201486161U describes a carbon fiber plate, wherein a layer of release paper is attached to the upper and lower surfaces or one side thereof as a protective film, and the protective film can be peeled off from the surface of the plate.

The problem of current carbon fiber plate is mostly flat plate structure, as shown in fig. 1, the upper and lower surface is drawing of

patterns cloth

1, 3, middle carbon fiber layer 2 that is, drawing of patterns cloth takes off can form middle depressed area 4 and border bellying 5 after removing, as shown in fig. 2, when two-layer carbon fiber plate is range upon range of, for making the resin easily get into between the two-layer board, generally press from both sides one deck glass fiber felt 6 in the middle of the two-layer board, but because the existence of middle depressed area 4 and border bellying 5, it is difficult for between the two-layer board to permeate into to pour into resin 7, easily cause appearing dry yarn between the two-layer board, hold out gas, defects such as scarce material, influence the adhesion strength of. If adopt the surface mode of polishing, general panel surface does not have the layer of polishing, directly polishes carbon fiber layer and can destroy carbon fiber strength.

Disclosure of Invention

In order to overcome the not enough of prior art, the utility model provides a vacuum is filled and is used carbon fiber plate is difficult for forming the gas pocket defect, can improve the interlaminar bonding force, and product production efficiency is high, the steady quality.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a carbon fiber plate for vacuum infusion, is equipped with the carbon fiber plate main part, its characterized in that, the upper and lower both sides subsides of carbon fiber plate main part are covered and are protected cloth and protect cloth down, and the upper and lower both sides at carbon fiber plate main part both ends become the attenuate district by the transition region, and the attenuate district width is 5 ~ 10mm, and the single face thickness fall of attenuate district and carbon fiber plate main part upper and lower both sides is 0.3 ~ 0.5mm, and transition district and attenuate district contained angle are 135 ~ 170.

The coverage area of the upper protection cloth and the lower protection cloth exceeds the transition area by 1-3 mm.

The upper protection cloth and the lower protection cloth are made of nylon fibers or glass fibers, and the thickness of the upper protection cloth and the thickness of the lower protection cloth are 0.1-0.2 mm.

The beneficial effects of the utility model are that, the vacuum is filled with carbon fiber plate production efficiency height, and the stability of resin viscosity in the steeping vat can be guaranteed to the steady quality, prolongs resin live time, has guaranteed fibrous distribution homogeneity and the accurate positioning of protection cloth, has reduced fluffing, die orifice jam scheduling problem. Through set up at both sides and reduce thin district and transition district, when being used for vacuum infusion multilayer laminating pre-buried, easily with air escape between the panel, difficult formation gas pocket defect can improve the adhesion between the layer.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a cross-sectional structure view of the carbon fiber plate of the background art of the present invention.

Fig. 2 is the utility model discloses background art carbon fiber plate lamination back vacuum perfusion schematic diagram.

Fig. 3 is a cross-sectional structure view of the carbon fiber sheet of the present invention.

Fig. 4 is a partial enlarged view of the carbon fiber sheet of the present invention.

Fig. 5 is the utility model discloses carbon fiber sheet lamination back vacuum perfusion schematic diagram.

In the figure, 1, upper protective cloth, 2, a carbon fiber plate main body, 3, lower protective cloth, 4, a middle concave area, 5, an edge convex area, 6, a glass fiber felt, 7, resin, 8, a carbon fiber plate main body, 9, upper protective cloth, 10, lower protective cloth, 11, a thinning area, 12, a transition area, 13, a middle area of two layers of carbon fiber plates, 14, a U-shaped cavity, 15, a creel, 16, a glue dipping tank, 17, a preforming, 18, a pultrusion die, 19, a polishing system, 20, a cleaning system, 21, a tractor, 22, a cutting machine, 23, old resin, 24, new resin, 25, a spiral glue mixer, 26, mixed resin, 27, protective cloth, 28, a carbon fiber layer A, 29, a carbon fiber layer B, 30, a heater, 31, a carbon fiber half merging layer and 32, a carbon fiber integral merging layer are adopted.

Detailed Description

As shown in fig. 3, 4 and 5, the carbon fiber plate for vacuum infusion of the present invention is composed of a composite carbon fiber plate main body 8, an upper protective cloth 9, a lower protective cloth 10, thinning areas 11 at both ends, and a transition area 12. The width A of the thinning areas 11 at the two ends is 5-10 mm, the thickness drop B of the single surface (namely the upper surface or the lower surface of the carbon fiber plate main body) of the thinning areas 11 and the middle area is 0.3-0.5 mm, and the included angle C between the transition area 12 and the thinning areas 11 is 135-170 degrees. The upper and lower surfaces of the carbon fiber plate main body 8 are respectively coated with an upper protective cloth 9 and a lower protective cloth 10, the upper protective cloth 9 and the lower protective cloth 10 can be made of nylon fiber or glass fiber, the thickness is 0.1-0.2 mm, and the upper protective cloth 9 and the lower protective cloth are respectively coated with a protective cloth 9If the protective cloth 10 is made of nylon fiber, the rough surface is formed by directly removing the protective cloth without polishing, if the protective cloth is made of glass fiber, the glass fiber cloth is used as a polishing layer to protect the carbon fiber inside, the influence of polishing on the strength of the carbon fiber plate can be reduced to the maximum extent, and the surface roughness of the polished protective cloth is Ra6.3-Ra 25. The coverage area of the upper protection cloth 9 and the lower protection cloth 10 exceeds the outer end of the transition area 12 by 1-3 mm, and the upper protection cloth 9 and the lower protection cloth 10 can be removed or polished to form a rough surface. When the carbon fiber plate main body 8 is used for vacuum infusion and multilayer lamination pre-embedding, the U-shaped cavity 14 can be formed in the thinning area 11 of the two layers of carbon fiber plate main bodies, the infusion resin 7 can form a resin-rich area in the area, and easily enters the middle area 13 of the two layers of carbon fiber plates along the glass fiber felt 6, so that air between the plates is discharged, the air hole defect is not easily formed, the bonding force between the layers can be improved, and the fracture toughness of the plates is more than or equal to 200J/m²。

The utility model provides a carbon fiber plate for vacuum infusion, through set up attenuate district and transition district in both sides, when being used for vacuum infusion multilayer laminating pre-buried, attenuate district at two-layer carbon fiber plate can form U-shaped cavity 14, it can form rich resin district at this region to fill resin 7, it gets into two-layer carbon fiber plate intermediate zone 13 to follow glass fiber felt 6 easily, thereby with air escape between panel, be difficult for forming the gas pocket defect, can improve the interlaminar bonding force, guarantee that the fracture toughness of panel is greater than or equal to 200J/m². If the protective cloth on the surface of the carbon fiber plate is made of nylon fiber, the protective cloth is not required to be polished and can be directly removed to form a rough surface; if for the glass fiber material, the glass fiber cloth plays the guard action as the layer of polishing to inside carbon fiber, can furthest reduce the influence of polishing to carbon fiber plate intensity.

The first embodiment is as follows:

the total width of the carbon fiber plate is 100mm, the thickness of the carbon fiber plate is 2mm, the width A of the thinning areas at two sides is 5mm, the single-side thickness difference B between the thinning areas and the middle area is 0.3mm, and the included angle C between the transition area and the thinning area is 145 degrees. The protection cloth is made of nylon fibers, the thickness of the protection cloth is 0.1mm, and the coverage area of the protection cloth exceeds the transition area by 1 mm.

Example two:

the total width of the carbon fiber plate is 100mm, the thickness of the carbon fiber plate is 5mm, the width A of the thinning areas at two sides is 10mm, the single-side thickness difference B between the thinning area and the middle area is 0.5mm, and the included angle C between the transition area and the thinning area is 170 degrees. The protection cloth is made of glass fiber, the thickness of the protection cloth is 0.2mm, and the coverage area of the protection cloth exceeds the transition area by 2 mm.

Claims

1. The utility model provides a carbon fiber plate for vacuum infusion, is equipped with the carbon fiber plate main part, its characterized in that, the upper and lower both sides subsides of carbon fiber plate main part are covered and are protected cloth and protect cloth down, and the upper and lower both sides at carbon fiber plate main part both ends become the attenuate district by the transition region, and the attenuate district width is 5 ~ 10mm, and the single face thickness fall of attenuate district and carbon fiber plate main part upper and lower both sides is 0.3 ~ 0.5mm, and transition district and attenuate district contained angle are 135 ~ 170.

2. The carbon fiber plate for vacuum infusion according to claim 1, wherein the upper protective cloth and the lower protective cloth cover 1 to 3mm beyond the transition region.

3. The carbon fiber plate for vacuum infusion according to claim 1, wherein the upper protective cloth and the lower protective cloth are made of nylon fibers or glass fibers and have a thickness of 0.1 to 0.2 mm.