1. A pultrusion method of a carbon fiber and glass fiber composite board is characterized by comprising the following steps:

1) withdrawing yarn from the creel: placing the carbon fiber yarn frames at the center position in the pultrusion direction to be aligned with the carbon fiber glue grooves, and placing the glass fiber yarn frames at two sides in a splayed shape;

2) threading and combing: stretching the carbon fiber yarns by using a yarn stretching device, and combing the yarns by using a yarn guide plate;

3) carbon fiber glue tank gumming: dividing the carbon fiber yarn into two to four layers, pressing the carbon fiber yarn down to the bottom of a carbon fiber glue tank, and fully dipping the carbon fiber yarn;

4) pre-curing the carbon fiber mold: precuring the carbon fiber yarn after gum dipping through a first pultrusion mould to form a precured carbon plate; the curing temperature zone adopts a two-stage curing temperature zone, and the temperatures are respectively 140-170 ℃ and 160-190 ℃;

5) dipping the glass fiber glue in a glue tank: dividing the glass fiber yarn into two to four layers, pressing the glass fiber yarn down to the bottom of a glass fiber glue tank, and fully dipping the glass fiber yarn;

6) final curing of the product: after the glass fiber yarns are subjected to gum dipping, uniformly distributing the glass fiber yarns around the pre-cured carbon plate according to the specific number of the glass fibers, allowing the glass fiber yarns to enter a second pultrusion mold, and curing to obtain a carbon-glass mixed pultrusion plate; the curing temperature zone adopts a three-level curing temperature zone, and the temperatures are respectively 140-170 ℃, 170-190 ℃ and 170-190 ℃; the pultrusion speed is 200 and 500 mm/min.

2. The pultrusion method for the carbon fiber and glass fiber composite board as claimed in claim 1, wherein the pultrusion method comprises the following steps: the length of the first pultrusion die is fixed between 400 mm and 700 mm.

3. The pultrusion method for the carbon fiber and glass fiber composite board as claimed in claim 1, wherein the pultrusion method comprises the following steps: the size of the inner cavity of the first pultrusion die is 1-6mm in height and 20-300mm in width, and the final size of the carbon fiber in the product is fixed according to the size.

4. The pultrusion method for the carbon fiber and glass fiber composite board as claimed in claim 1, wherein the pultrusion method comprises the following steps: the length of the second pultrusion die is between 800 mm and 1300 mm.

Background

The wind power blade main beam is a main bearing component of the wind power blade and controls the overall rigidity and the ultimate strength of the wind power blade in the wingspan direction. With the development of wind power to low wind speed and at sea, the size of the blade is larger and larger, the self weight and the bearing requirements of the blade are also larger and larger, and great challenges are brought to the design of a wind power complete machine and the blade. The pultruded plate is used for manufacturing the wind power blade, and the carbon fiber pultruded plate is firstly adopted, has the performance advantages of high specific strength and high specific modulus, can meet the strength and rigidity requirements of large wind power blade structural members, and obviously reduces weight. Although carbon fiber has obvious performance advantages, the disadvantage of high cost is obvious, and the weight is increased if the pultruded girder plate for the wind power blade is produced by using glass fiber.

However, at present, no mature technology related to the production of the pultruded girder plate for the wind turbine blade by compounding carbon fibers and glass fibers exists, and in the technologies studied at present, the glass fibers and the carbon fibers cannot be regularly arranged, and the performance of the fibers cannot be well exerted.

Disclosure of Invention

The invention aims to solve the technical problems and provides a pultrusion method of a carbon fiber and glass fiber composite board.

The technical scheme for realizing the invention is as follows: a pultrusion method of a carbon fiber and glass fiber composite board is characterized by comprising the following steps:

1) withdrawing yarn from the creel: placing the carbon fiber yarn frames at the center position in the pultrusion direction to be aligned with the carbon fiber glue grooves, and placing the glass fiber yarn frames at two sides in a splayed shape;

2) threading and combing: stretching the carbon fiber yarns by using a yarn stretching device, and combing the yarns by using a yarn guide plate;

3) carbon fiber glue tank gumming: dividing the carbon fiber yarn into two to four layers, pressing the carbon fiber yarn down to the bottom of a carbon fiber glue tank, and fully dipping the carbon fiber yarn;

4) pre-curing the carbon fiber mold: precuring the carbon fiber yarn after gum dipping through a first pultrusion mould to form a precured carbon plate; the curing temperature zone adopts a two-stage curing temperature zone, and the temperatures are respectively 140-170 ℃ and 160-190 ℃;

5) dipping the glass fiber glue in a glue tank: dividing the glass fiber yarn into two to four layers, pressing the glass fiber yarn down to the bottom of a glass fiber glue tank, and fully dipping the glass fiber yarn;

6) final curing of the product: after the glass fiber yarns are subjected to gum dipping, uniformly distributing the glass fiber yarns around the pre-cured carbon plate according to the specific number of the glass fibers, allowing the glass fiber yarns to enter a second pultrusion mold, and curing to obtain a carbon-glass mixed pultrusion plate; the curing temperature zone adopts a three-level curing temperature zone, and the temperatures are respectively 140-170 ℃, 170-190 ℃ and 170-190 ℃; the pultrusion speed is 200 and 500 mm/min.

The length of the first pultrusion die is fixed between 400 mm and 700 mm.

The size of the inner cavity of the first pultrusion die is 1-6mm in height and 20-300mm in width, and the final size of the carbon fiber in the product is fixed according to the size.

The length of the second pultrusion die is between 800 mm and 1300 mm.

The invention has the beneficial effects that:

1. the invention can ensure that the carbon fibers are orderly arranged in the plate and greatly exert the mechanical property after compounding.

2. The invention can produce the carbon fiber and glass fiber composite board with the height of 3-8mm and the width of 70-300mm for wind power girder pultrusion plate with the following specification range.

Drawings

FIG. 1 is a schematic view of a processing technique of a carbon-glass mixed pultruded panel according to an embodiment of the present invention.

Reference numbers in the figures: 1-carbon fiber yarn, 2-first pultrusion mould, 3-glass fiber yarn, 4-second pultrusion mould and 5-carbon glass mixed pultrusion plate.

Detailed Description

As shown in fig. 1, a pultrusion method of a carbon fiber and glass fiber composite board comprises the following steps:

1) withdrawing yarn from the creel: placing the carbon fiber yarn frames at the center position in the pultrusion direction to be aligned with the carbon fiber glue grooves, and placing the glass fiber yarn frames at two sides in a splayed shape;

2) threading and combing: using a yarn unfolding device to unfold the carbon fiber yarn 1, and then combing the yarn through a yarn guide plate;

3) carbon fiber glue tank gumming: dividing the carbon fiber yarn 1 into two to four layers, pressing the carbon fiber yarn down to the bottom of a carbon fiber glue tank, and fully dipping the carbon fiber yarn;

4) pre-curing the carbon fiber mold: precuring the carbon fiber yarn 1 after gum dipping through a first pultrusion die 2 to form a precured carbon plate; the curing temperature zone adopts a two-stage curing temperature zone, and the temperatures are respectively 140-170 ℃ and 160-190 ℃; the length of the first pultrusion die 2 is fixed between 400 mm and 700mm, the size of an inner cavity of the first pultrusion die is 1-6mm in height and 20-300mm in width, and the final size of the carbon fiber in the product is fixed according to the size.

5) Dipping the glass fiber glue in a glue tank: dividing the glass fiber yarn 3 into two to four layers, pressing the two layers to the bottom of a glass fiber glue tank, and fully dipping the glass fiber glue tank;

6) final curing of the product: after the glass fiber yarns 3 are impregnated, uniformly distributing the glass fiber yarns 3 around the pre-cured carbon plate according to the specific number of the glass fibers, and allowing the glass fiber yarns to enter a second pultrusion mold 4 for curing to obtain a carbon-glass mixed pultrusion plate 5; the curing temperature zone adopts a three-level curing temperature zone, and the temperatures are respectively 140-170 ℃, 170-190 ℃ and 170-190 ℃; the pultrusion speed is 200-500 mm/min; the length of the second pultrusion die 4 is between 800 mm and 1300 mm.

The present invention has been disclosed in detail above by the description of specific embodiments. It should be understood, however, that the above-described embodiments are illustrative and not restrictive. Various modifications, improvements and equivalents of the invention may be devised by those skilled in the art within the spirit and scope of the appended claims. Such modifications, improvements and equivalents are also intended to be included within the scope of the present invention.