CN215301028U

CN215301028U - Prepreg

Info

Publication number: CN215301028U
Application number: CN202120826262.9U
Authority: CN
Inventors: 吴虹; 聂国辉; 曾昭峰; 程凯
Original assignee: Junxuan New Material Hangzhou Co ltd
Current assignee: Junxuan New Material Hangzhou Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-12-24
Anticipated expiration: 2031-04-21

Abstract

The application relates to a prepreg, which relates to the technical field of prepregs and comprises a first glass fiber board, wherein a second glass fiber board is arranged on one side wall of the first glass fiber board, a bonding cavity is arranged between the first glass fiber board and the second glass fiber board, and a bonding layer is arranged in the bonding cavity; buckling grooves are formed in two sides of the first glass fiber plate, buckling blocks are arranged on two sides of the second glass fiber plate, and the buckling blocks on two sides of the second glass fiber plate are buckled at the buckling grooves of the first glass fiber plate. This application has improved the prepreg and in transport, cutting, operation and packaging process, the edge produces the effect of the condition of the resin powder that peels off easily.

Description

Prepreg

Technical Field

The application relates to the technical field of prepregs, in particular to a prepreg.

Background

The prepreg is an indispensable semi-finished product of a copper-clad plate and a multilayer printed circuit board in the current industry, and is mainly prepared by soaking and drying a reinforcing material comprising glass fiber cloth, non-woven fabric or wood pulp paper and the like by curing mixed resin. Because the resin of the prepreg is in a semi-cured state, the resin can be melted and bonded again and completely cured at high temperature, so different types of prepreg substrates can be utilized for superposition, and a laminator is adopted for high-temperature hot pressing to form the copper-clad plate or the multilayer printed circuit laminated plate meeting the requirements.

However, because the resin of the prepreg is only in a semi-cured state, the edge of the prepreg is easy to generate peeled resin powder in the processes of carrying, cutting, operating, packaging, transporting and the like, and the resin powder pollutes the operating environment and also affects the finished product yield of the copper-clad plate and the multilayer printed circuit board.

SUMMERY OF THE UTILITY MODEL

In order to improve the prepreg in transport, cutting, operation and packaging process, the easy condition that produces the resin powder that peels off in edge, this application provides a prepreg.

The application provides a prepreg adopts following technical scheme:

a prepreg comprises a first glass fiber board, wherein a second glass fiber board is arranged on one side wall of the first glass fiber board, an adhesion cavity is formed between the first glass fiber board and the second glass fiber board, and an adhesion layer is arranged in the adhesion cavity; buckling grooves are formed in two sides of the first glass fiber plate, buckling blocks are arranged on two sides of the second glass fiber plate, and the buckling blocks on two sides of the second glass fiber plate are buckled at the buckling grooves of the first glass fiber plate.

By adopting the technical scheme, the first glass fiber board and the second glass fiber board are of a composition structure of the prepreg; when a prepreg is prepared, mutually attaching a first glass fiber board and a second glass fiber board to form a bonding cavity between the first glass fiber board and the second glass fiber board, pouring bonding glue solution into the bonding cavity, extruding the first glass fiber board and the second glass fiber board to ensure that the bonding glue solution is extruded and then leveled uniformly in the bonding cavity, and then the bonding glue solution is bonded to form a bonding layer, so that the first glass fiber board and the second glass fiber board are bonded and fixed; when laminating first glass fiber board and second glass fiber board each other, the lock joint piece lock joint on the second glass fiber board is in the lock joint inslot of first glass fiber board to through mutually supporting in lock joint piece and lock joint groove, seal the lateral wall of first glass fiber board and second glass fiber board relatively, reduce the bonding glue solution and lose first glass fiber board and second glass fiber board avris from the bonding intracavity, thereby reduce the probability that the prepreg edge takes off the powder.

Optionally, an overflow hole is formed in one end, far away from the second glass fiber plate, of the buckling block, and the overflow hole penetrates through the buckling block.

By adopting the technical scheme, the first glass fiber plate and the second glass fiber plate are attached, the buckling block on the second glass fiber plate is buckled in the buckling groove on the first glass fiber plate, the bonding glue solution is poured into the bonding cavity, the first glass fiber plate and the second glass fiber plate are extruded, the bonding glue solution is pressed and flows at the bonding cavity, the bonding glue solution flows to the buckling groove from the overflow hole, and the side walls of the buckling block and the first glass fiber plate at the buckling groove are fixed and bonded by the bonding glue solution.

Optionally, the overflow hole is provided with a plurality of, and a plurality of overflow holes evenly distributed is on the lock joint piece.

Through adopting above-mentioned technical scheme, the overflow hole is provided with a plurality ofly, is convenient for adhere glue solution evenly distributed in lock joint piece and lock joint groove department.

Optionally, the adhesive layer is an epoxy resin layer.

Optionally, a side wall of the second glass fiber plate relatively far from the first glass fiber plate is provided with a temperature-resistant layer.

Optionally, a protective layer is disposed on a side wall of the temperature-resistant layer relatively far from the second glass fiber plate.

In summary, the present application includes at least one of the following beneficial technical effects:

1. a second glass fiber plate is arranged on one side wall of the first glass fiber plate, a bonding cavity is formed between the first glass fiber plate and the second glass fiber plate, and a bonding layer is arranged in the bonding cavity; buckling grooves are formed in two sides of the first glass fiber plate, buckling blocks are arranged on two sides of the second glass fiber plate, and the buckling blocks on the two sides of the second glass fiber plate are buckled at the buckling grooves of the first glass fiber plate; the first glass fiber board and the second glass fiber board are of a composition structure of a prepreg; when a prepreg is prepared, mutually attaching a first glass fiber board and a second glass fiber board to form a bonding cavity between the first glass fiber board and the second glass fiber board, pouring bonding glue solution into the bonding cavity, extruding the first glass fiber board and the second glass fiber board to ensure that the bonding glue solution is extruded and then leveled uniformly in the bonding cavity, and then the bonding glue solution is bonded to form a bonding layer, so that the first glass fiber board and the second glass fiber board are bonded and fixed; when laminating first glass fiber board and second glass fiber board each other, the lock joint piece lock joint on the second glass fiber board is in the lock joint inslot of first glass fiber board to through mutually supporting in lock joint piece and lock joint groove, seal the lateral wall of first glass fiber board and second glass fiber board relatively, reduce the bonding glue solution and lose first glass fiber board and second glass fiber board avris from the bonding intracavity, thereby reduce the probability that the prepreg edge takes off the powder.

2. An overflow hole is formed in one end, far away from the second glass fiber plate relatively, of the fastening block, the overflow hole penetrates through the fastening block, the first glass fiber plate and the second glass fiber plate are attached, the fastening block on the second glass fiber plate is fastened in the fastening groove on the first glass fiber plate, the bonding glue solution is poured into the bonding cavity, the first glass fiber plate and the second glass fiber plate are extruded, the bonding glue solution flows under pressure at the bonding cavity, the bonding glue solution flows to the fastening groove from the overflow hole, and then the side walls, located at the fastening groove, of the fastening block and the first glass fiber plate are fixedly bonded through the bonding glue solution.

Drawings

Fig. 1 is a schematic cross-sectional view of a prepreg according to an embodiment of the present application.

Description of reference numerals: 1. a first glass fiber sheet; 2. a second glass fiber sheet; 3. a fastening groove; 4. a buckling block; 5. a bonding chamber; 6. an adhesive layer; 7. an overflow aperture; 8. a temperature resistant layer; 9. and a protective layer.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses a prepreg.

Referring to fig. 1, a prepreg includes a first glass fiber plate 1 having a rectangular shape, a second glass fiber plate 2 is disposed on a side wall of the first glass fiber plate 1 having a largest area, and the second glass fiber plate 2 and the first glass fiber plate 1 have the same shape. In the embodiment of the present application, the first glass fiber plate 1 and the second glass fiber plate 2 are made of glass fiber materials.

Referring to fig. 1, two side edges of a first glass fiber plate 1 are provided with buckling grooves 3, and the openings of the buckling grooves 3 on the two sides deviate from each other, that is, the first glass fiber plate 1 and the two buckling grooves 3 are in an i shape as a whole; the both sides integrated into one piece of second glass fiber board 2 is provided with lock joint piece 4, and lock joint piece 4 wholly presents "L" type, and lock joint piece 4 lock joint slides in fastening groove 3, and when first glass fiber board 1 and second glass fiber board 2 spliced each other, the avris levels.

Referring to fig. 1, a bonding cavity 5 is formed between a first glass fiber plate 1 and a second glass fiber plate 2, when the first glass fiber plate 1 and the second glass fiber plate 2 are bonded and fixed, after a bonding glue solution is poured into the bonding cavity 5, the first glass fiber plate 1 and the second glass fiber plate 2 are extruded, so that the bonding glue solution flows under pressure at the bonding cavity 5, and then the bonding glue solution itself is bonded to form a bonding layer 6, so that the first glass fiber plate 1 and the second glass fiber plate 2 are bonded and fixed. In the embodiment of the present application, the adhesive glue solution may be an epoxy resin, that is, the adhesive layer 6 is an epoxy resin layer.

Referring to fig. 1, one side of second glass fiber board 2 is kept away from relatively to lock joint piece 4, and the one end that is located buckle connection groove 3 has evenly seted up a plurality of circular shape overflow holes 7 that are, and overflow hole 7 runs through lock joint piece 4 along the direction of perpendicular second glass fiber board 2 lateral walls, pours the bonding glue solution back into bonding chamber 5, extrudes first glass fiber board 1 and second glass fiber board 2, and the bonding glue solution can be followed overflow hole 7 and is overflowed to buckle connection groove 3 department to fix lock joint piece 4 in buckle connection groove 3 department.

Referring to fig. 1, a side wall of the second glass fiber plate 2 relatively far from the first glass fiber plate 1 is provided with a temperature-resistant layer 8, and a side wall of the temperature-resistant layer 8 relatively far from the second glass fiber plate 2 is provided with a protective layer 9.

The implementation principle of the prepreg in the embodiment of the application is as follows: the first glass fiber board 1 and the second glass fiber board 2 are formed structures of prepregs; when a prepreg is prepared, a first glass fiber plate 1 and a second glass fiber plate 2 are mutually attached to form an adhesion cavity 5 between the first glass fiber plate 1 and the second glass fiber plate 2, an adhesion glue solution is poured into the adhesion cavity 5 to extrude the first glass fiber plate 1 and the second glass fiber plate 2, the adhesion glue solution is extruded to further flow uniformly in the adhesion cavity 5, and then the adhesion glue solution is bonded to form an adhesion layer 6, so that the first glass fiber plate 1 and the second glass fiber plate 2 are adhered and fixed; when laminating first glass fiber board 1 and second glass fiber board 2 each other, the knot on the second glass fiber board 2 blocks in the knot groove 3 of first glass fiber board 1 to through the mutual cooperation of knot block 4 and knot groove 3, seal first glass fiber board 1 and the lateral wall of second glass fiber board 2 relatively, reduce the bonding glue solution and lose to first glass fiber board 1 and the 2 avris of second glass fiber board from bonding chamber 5, thereby reduce the probability that the prepreg edge desquamated.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A prepreg characterized in that: the glass fiber plate comprises a first glass fiber plate (1), wherein a second glass fiber plate (2) is arranged on one side wall of the first glass fiber plate (1), a bonding cavity (5) is formed between the first glass fiber plate (1) and the second glass fiber plate (2), and a bonding layer (6) is arranged in the bonding cavity (5); buckling grooves (3) are formed in two sides of the first glass fiber plate (1), buckling blocks (4) are arranged on two sides of the second glass fiber plate (2), and the buckling blocks (4) on two sides of the second glass fiber plate (2) are buckled in the buckling grooves (3) of the first glass fiber plate (1).

2. A prepreg according to claim 1, wherein: an overflow hole (7) is formed in one end, far away from the second glass fiber plate (2), of the buckling block (4) relatively, and the overflow hole (7) penetrates through the buckling block (4).

3. A prepreg according to claim 1, wherein: the overflow holes (7) are arranged in a plurality, and the overflow holes (7) are uniformly distributed on the buckling block (4).

4. A prepreg according to claim 1, wherein: the bonding layer (6) is an epoxy resin layer.

5. A prepreg according to claim 1, wherein: and a temperature-resistant layer (8) is arranged on one side wall of the second glass fiber plate (2) relatively far away from the first glass fiber plate (1).

6. A prepreg according to claim 5, wherein: and a protective layer (9) is arranged on one side wall of the temperature-resistant layer (8) relatively far away from the second glass fiber plate (2).