阅读说明：本技术 碳纤维预浸料的转移方法与碳纤维预浸料制品 (Transfer method of carbon fiber prepreg and carbon fiber prepreg product ) 是由 税春晖 于 2020-07-08 设计创作，主要内容包括：本发明公开一种碳纤维预浸料的转移方法与碳纤维预浸料制品,其中,一种碳纤维预浸料的转移方法,包括以下步骤：提供碳纤维预浸料,所述碳纤维预浸料包括叠层设置的离型层和碳纤维层；将承接层压合于所述碳纤维层背离所述离型层的表面,所述承接层对所述碳纤维层的离型力不小于240g/mm；剥离所述碳纤维层表面的所述离型层,得到碳纤维预浸料制品。本发明的技术方案能够避免碳纤维层上分布的碳纤维的取向发生变化,保证了转移后碳纤维层的强度。(The invention discloses a transfer method of a carbon fiber prepreg and a carbon fiber prepreg product, wherein the transfer method of the carbon fiber prepreg comprises the following steps: providing a carbon fiber prepreg, wherein the carbon fiber prepreg comprises a release layer and a carbon fiber layer which are arranged in a laminated manner; laminating a receiving layer on the surface of the carbon fiber layer, which is far away from the release layer, wherein the release force of the receiving layer to the carbon fiber layer is not less than 240 g/mm; and stripping the release layer on the surface of the carbon fiber layer to obtain the carbon fiber prepreg product. The technical scheme of the invention can avoid the change of the orientation of the carbon fibers distributed on the carbon fiber layer and ensure the strength of the carbon fiber layer after transfer.)

1. A method for transferring a carbon fiber prepreg is characterized by comprising the following steps:

providing a carbon fiber prepreg, wherein the carbon fiber prepreg comprises a release layer and a carbon fiber layer which are arranged in a laminated manner;

laminating a receiving layer on the surface of the carbon fiber layer, which is far away from the release layer, wherein the release force of the receiving layer to the carbon fiber layer is not less than 240 g/mm;

and stripping the release layer on the surface of the carbon fiber layer to obtain the carbon fiber prepreg product.

2. The method for transferring a carbon fiber prepreg according to claim 1, wherein a release force of the receiving layer to the carbon fiber layer is 240g/mm to 250 g/mm.

3. The method for transferring a carbon fiber prepreg according to claim 2, wherein a release force of the receiving layer to the carbon fiber layer is at least 100g/mm higher than a release force of the release layer to the carbon fiber layer.

4. The method for transferring a carbon fiber prepreg according to claim 3, wherein a release force of the release layer to the carbon fiber layer is 140g/mm to 150 g/mm.

5. The method for transferring a carbon fiber prepreg according to claim 1, wherein the step of laminating a receiving layer to a surface of the carbon fiber layer facing away from the release layer comprises:

And introducing the receiving layer and the carbon fiber prepreg between two pairs of compression rollers, and controlling the compression pressure of the two pairs of compression rollers so that the receiving layer is laminated on the surface of the carbon fiber layer departing from the release layer.

6. The method for transferring a carbon fiber prepreg according to claim 5, wherein in the step of controlling the counter pressure of the two counter pressure rollers, the counter pressure of the two counter pressure rollers is 4kgf/cm²To 6kgf/cm²。

7. The method of transferring a carbon fiber prepreg according to any one of claims 1 to 6, wherein the carbon fiber prepreg further comprises a polyethylene layer provided on a surface of the carbon fiber layer facing away from the release layer, and the step of laminating a receiving layer to the surface of the carbon fiber layer facing away from the release layer comprises:

and removing the polyethylene layer arranged on the surface of the carbon fiber layer, which is deviated from the release layer.

8. The method for transferring a carbon fiber prepreg according to any one of claims 1 to 6, wherein the step of bonding a receiving layer to a surface of the carbon fiber layer facing away from the release layer is preceded by:

and depositing a release agent on the surface of the base layer so as to solidify and mold the release agent on the base layer to obtain the receiving layer.

9. The method for transferring a carbon fiber prepreg according to claim 8, wherein in the step of depositing a release agent on the surface of the base layer, the release agent comprises kaolin and silicone oil.

10. A carbon fiber prepreg product obtained by the method for transferring a carbon fiber prepreg according to any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of carbon fiber prepreg processing, in particular to a transfer method of a carbon fiber prepreg and a carbon fiber prepreg product.

Background

In the actual use process of the carbon fiber prepreg, a plurality of carbon fiber prepregs are generally required to be transferred to the same receiving layer to obtain the carbon fiber prepreg with a specific size. At present, the carbon fiber prepreg of specific size mainly handles the carbon fiber layer of carbon fiber prepreg through the heating pressurization to make the carbon fiber layer surface melting, like this, accept the layer and closely laminate in fused carbon fiber layer, so, detach the carbon fiber layer and deviate from to accept the layer from the type layer carbon fiber layer shift to accepting the layer after accepting the layer, thereby reached the transfer effect of carbon fiber layer. However, the carbon fiber layer is attached to the receiving layer in a melting manner, and the orientation of the carbon fibers distributed on the carbon fiber layer is changed in the melting process, so that the strength of the carbon fiber layer is affected, and the strength of the transferred carbon fiber layer cannot be guaranteed.

Disclosure of Invention

The invention mainly aims to provide a method for transferring a carbon fiber prepreg, aiming at avoiding the change of the orientation of carbon fibers distributed on a carbon fiber layer and ensuring the strength of the transferred carbon fiber layer.

In order to achieve the above object, the present invention provides a method for transferring a carbon fiber prepreg, comprising the steps of:

providing a carbon fiber prepreg, wherein the carbon fiber prepreg comprises a release layer and a carbon fiber layer which are arranged in a laminated manner;

laminating a receiving layer on the surface of the carbon fiber layer, which is far away from the release layer, wherein the release force of the receiving layer to the carbon fiber layer is not less than 240 g/mm;

and stripping the release layer on the surface of the carbon fiber layer to obtain the carbon fiber prepreg product.

Optionally, the release force of the receiving layer to the carbon fiber layer is 240g/mm to 250 g/mm.

Optionally, the release force of the receiving layer to the carbon fiber layer is at least 100g/mm higher than the release force of the release layer to the carbon fiber layer.

Optionally, the release force of the release layer to the carbon fiber layer is 140g/mm to 150 g/mm.

Optionally, the step of laminating a receiving layer on the surface of the carbon fiber layer facing away from the release layer comprises:

And introducing the receiving layer and the carbon fiber prepreg between two pairs of compression rollers, and controlling the compression pressure of the two pairs of compression rollers so that the receiving layer is laminated on the surface of the carbon fiber layer departing from the release layer.

Optionally, in the step of controlling the pressing pressure of the two pairs of pressing rolls, the pressing pressure of the two pairs of pressing rolls is 4kgf/cm²To 6kgf/cm²。

Optionally, the carbon fiber prepreg further includes a polyethylene layer, the polyethylene layer is disposed on a surface of the carbon fiber layer facing away from the release layer, and the step of laminating the receiving layer on the surface of the carbon fiber layer facing away from the release layer includes:

and removing the polyethylene layer arranged on the surface of the carbon fiber layer, which is deviated from the release layer.

Optionally, the step of laminating the receiving layer to the surface of the carbon fiber layer facing away from the release layer comprises:

and depositing a release agent on the surface of the base layer so as to solidify and mold the release agent on the base layer to obtain the receiving layer.

Optionally, in the step of depositing a release agent on the surface of the base layer, the release agent includes kaolin and silicone oil.

Optionally, the carbon fiber prepreg product includes a polyethylene layer, the polyethylene layer is disposed on a surface of the carbon fiber layer away from the receiving layer, and the step of "peeling off the release layer on the surface of the carbon fiber layer" further includes:

And attaching a polyethylene layer to the surface of the carbon fiber layer deviating from the bearing layer.

The invention also provides a carbon fiber prepreg product, which is obtained by the transfer method of the carbon fiber prepreg, and the transfer method of the carbon fiber prepreg comprises the following steps: providing a carbon fiber prepreg, wherein the carbon fiber prepreg comprises a release layer and a carbon fiber layer which are arranged in a laminated manner; laminating a receiving layer on the surface of the carbon fiber layer, which is far away from the release layer, wherein the release force of the receiving layer to the carbon fiber layer is not less than 240 g/mm; and stripping the release layer on the surface of the carbon fiber layer to obtain the carbon fiber prepreg product.

According to the technical scheme, the bearing layer is laminated on the surface, away from the release layer, of the carbon fiber layer, and the release force of the bearing layer to the carbon fiber layer is not less than 240g/mm, so that the bearing layer is tightly attached to the carbon fiber layer, and the carbon fiber layer is transferred to the bearing layer after the release layer on the surface of the carbon fiber layer is peeled, and the transfer of the carbon fiber layer is achieved. In addition, the carbon fiber layer is tightly attached through the bearing layer with high release force, the carbon fiber layer does not need to be heated and melted, so that the change of the orientation of the carbon fibers distributed on the carbon fiber layer is avoided, and the strength of the carbon fiber layer is ensured. Namely, the technical scheme of the invention can avoid the change of the orientation of the carbon fibers distributed on the carbon fiber layer and ensure the strength of the transferred carbon fiber layer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a flow chart of one embodiment of a method of transferring a carbon fiber prepreg of the present invention;

FIG. 2 is a detailed flowchart of step S30 in FIG. 1 according to the present invention;

FIG. 3 is a flow chart of another embodiment of a method of transferring a carbon fiber prepreg of the present invention;

FIG. 4 is a flow chart of another embodiment of a method of transferring a carbon fiber prepreg of the present invention;

FIG. 5 is a process flow diagram of one embodiment of a method of transferring a carbon fiber prepreg of the present invention;

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

The invention provides a transfer method of a carbon fiber prepreg, aiming at avoiding the change of the orientation of carbon fibers distributed on a carbon fiber layer and ensuring the strength of the carbon fiber layer obtained after transfer.

Referring to fig. 1, in an embodiment of the invention, a method for transferring a carbon fiber prepreg includes the following steps:

step S10, providing a carbon fiber prepreg, wherein the carbon fiber prepreg comprises a release layer and a carbon fiber layer which are arranged in a laminated manner;

step S30, laminating a receiving layer on the surface of the carbon fiber layer, which is far away from the release layer, wherein the release force of the receiving layer on the carbon fiber layer is not less than 240 g/mm;

and step S40, stripping the release layer on the surface of the carbon fiber layer to obtain the carbon fiber prepreg product.

According to the technical scheme, the bearing layer is laminated on the surface, away from the release layer, of the carbon fiber layer, and the release force of the bearing layer to the carbon fiber layer is not less than 240g/mm, so that the bearing layer is tightly attached to the carbon fiber layer, and the carbon fiber layer is transferred to the bearing layer after the release layer on the surface of the carbon fiber layer is peeled, and the transfer of the carbon fiber layer is achieved. In addition, the carbon fiber layer is tightly attached through the bearing layer with high release force, the carbon fiber layer does not need to be heated and melted, so that the change of the orientation of the carbon fibers distributed on the carbon fiber layer is avoided, and the strength of the carbon fiber layer is ensured. Namely, the technical scheme of the invention can avoid the change of the orientation of the carbon fibers distributed on the carbon fiber layer and ensure the strength of the carbon fiber layer obtained after the transfer.

It should be noted that, the receiving layer improves the releasing force of the carbon fiber layer by improving the roughness, on one hand, polishing may be adopted to form the receiving layer with the required roughness, and on the other hand, the releasing agent may be deposited on the surface of the receiving layer to form a rough structure, so as to improve the releasing force of the receiving layer to the carbon fiber layer.

In an embodiment of the invention, the release force of the receiving layer to the carbon fiber layer is 240g/mm to 250 g/mm. The release force of the receiving layer to the carbon fiber layer is the peeling force of the receiving layer on the carbon fiber layer, and the larger the peeling force is, the tighter the receiving layer and the carbon fiber layer are combined, the more difficult the receiving layer is to be peeled off from the carbon fiber layer, and the corresponding release force is also larger at this moment. In the embodiment of the invention, when the release force of the receiving layer to the carbon fiber layer is higher than 240g/mm, the receiving layer can be tightly combined with the carbon fiber layer, and when the release force of the receiving layer to the carbon fiber layer is higher than 250g/mm, the receiving layer is too tightly combined with the carbon fiber layer, so that the receiving layer and the carbon fiber layer cannot be completely peeled off in the subsequent use process of the carbon fiber layer, the receiving layer remains on the surface of the carbon fiber layer, and the strength of the carbon fiber layer is reduced while the use of the carbon fiber layer is influenced.

In an embodiment of the invention, the release force of the receiving layer to the carbon fiber layer is at least 100g/mm higher than the release force of the release layer to the carbon fiber layer. According to the embodiment of the invention, the release force of the receiving layer and the release layer on the carbon fiber layer is adjusted, so that the release layer can be peeled off from the carbon fiber layer by rolling in the process of laminating the receiving layer and the carbon fiber layer, and the transfer efficiency of the carbon fiber prepreg is improved.

In an embodiment of the invention, the release force of the release layer to the carbon fiber layer is 140g/mm to 150 g/mm. In order to ensure the normal transportation of the carbon fiber prepreg, the release force of the release layer to the carbon fiber layer is 140g/mm to 150g/mm, so that the smooth peeling of the release layer in the lamination process of the receiving layer and the carbon fiber layer is realized on one hand; on the other hand, the stable attachment of the release layer on the carbon fiber layer is ensured, and the separation of the carbon fiber prepreg from the release layer from the carbon fiber layer in the carrying process is avoided.

Referring to fig. 2, in an embodiment of the present invention, the step of laminating a receiving layer on the surface of the carbon fiber layer facing away from the release layer includes: step S31, introducing the receiving layer and the carbon fiber prepreg between two pairs of compression rollers; and step S32, controlling the opposite pressing pressure of the two opposite pressing rollers to enable the receiving layer to be laminated on the surface of the carbon fiber layer, which is far away from the release layer. According to the embodiment of the invention, the carbon fiber prepreg of the receiving layer is introduced into the two pairs of compression rollers, so that the receiving layer is tightly attached to the carbon fiber layer by controlling the compression pressure of the two pairs of compression rollers.

In an embodiment of the present invention, in the step of controlling the pressing force of the two pairs of pressing rolls, the pressing force of the two pairs of pressing rolls is 4kgf/cm²To 6kgf/cm². According to the embodiment of the invention, the pressing pressure of the two pressing rollers is controlled, so that the receiving layer is laminated on the carbon fiber layer, and the binding force between the receiving layer and the carbon fiber layer is adjusted, thereby not only ensuring that the receiving layer can be stably laminated on the carbon fiber layer, but also facilitating the stripping of the release layer from the surface of the carbon fiber layer. Of course, the pressing pressure against the press roll exceeds 6kgf/cm²Accept too closely that layer and carbon fiber layer combine, accept that the layer can't follow the complete peeling off in carbon fiber layer surface, so, influenced the follow-up use of carbon fiber layer, can't guarantee the intensity on carbon fiber layer. Preferably, the pair of press rolls has a pressing force of 5kgf/cm²Therefore, the bonding force between the bearing layer and the carbon fiber layer is moderate, and the subsequent processing is facilitated.

Referring to fig. 3, in an embodiment of the present invention, the carbon fiber prepreg further includes a polyethylene layer, the polyethylene layer is disposed on a surface of the carbon fiber layer facing away from the release layer, and the step of laminating a receiving layer on the surface of the carbon fiber layer facing away from the release layer includes: and step S20, removing the polyethylene layer arranged on the surface of the carbon fiber layer, which is opposite to the release layer. In order to facilitate the carrying of the carbon fiber prepreg, a polyethylene layer is arranged on the surface, deviating from the release layer, of the carbon fiber layer of the carbon fiber prepreg under a general condition, and the two adjacent carbon fiber prepregs are prevented from being mutually disorderly bonded due to the fact that the carbon fiber layer has cohesiveness, so that the carbon fiber prepreg with the polyethylene layer ensures the normal carrying of the carbon fiber prepreg. In this way, the polyethylene layer on the surface of the carbon fiber layer is removed between the pressing receiving layers, so that the subsequent pressing of the receiving layers on the surface of the carbon fiber layer is facilitated.

Referring to fig. 4, in an embodiment of the invention, the step of laminating the receiving layer on the surface of the carbon fiber layer facing away from the release layer includes: and step S25, depositing a release agent on the surface of the base layer so that the release agent is cured and molded on the base layer to obtain the receiving layer. It should be noted that in the embodiment of the present invention, the release agent is deposited on the surface of the base layer, so that the surface of the base layer forms a rough structure, and thus, the roughness of the surface of the base layer is increased, and the rough structure can be embedded into the carbon fiber layer, so as to form a nail anchor effect, ensure the close adhesion between the receiving layer and the carbon fiber layer, and improve the release force of the receiving layer to the carbon fiber layer. Of course, the component concentration of the release agent can be properly adjusted in the embodiment of the present invention, so as to improve the release force of the receiving layer to the carbon fiber layer.

In an embodiment of the invention, in the step of depositing the release agent on the surface of the base layer, the release agent includes kaolin and silicone oil. In the embodiment of the invention, kaolin is introduced, so that a rough structure is formed on the surface of the receiving layer through the introduced kaolin. In order to adjust the binding force between the receiving layer and the carbon fiber layer, the embodiment of the invention introduces the silicone oil which is used as a surfactant, so that on one hand, the receiving layer is ensured to be tightly attached to the carbon fiber layer, and on the other hand, the carbon fiber prepreg product is convenient to peel off the receiving layer in the subsequent use.

Referring to fig. 4, in an embodiment of the present invention, the carbon fiber prepreg product includes a polyethylene layer, the polyethylene layer is disposed on a surface of the carbon fiber layer facing away from the receiving layer, and the step of "peeling off the release layer on the surface of the carbon fiber layer" further includes: and attaching a polyethylene layer to the surface of the carbon fiber layer deviating from the bearing layer. According to the embodiment of the invention, the polyethylene layer is pressed on the surface of the carbon fiber layer, which is far away from the bearing layer, so that two adjacent carbon fiber prepreg products are prevented from being mutually disorderly bonded due to the fact that the carbon fiber layers have cohesiveness, and the normal carrying of the carbon fiber prepreg products is ensured.

The invention also provides a carbon fiber prepreg product, which is obtained by the transfer method of the carbon fiber prepreg, and the transfer method of the carbon fiber prepreg comprises the following steps: providing a carbon fiber prepreg, wherein the carbon fiber prepreg comprises a release layer and a carbon fiber layer which are arranged in a laminated manner; laminating a receiving layer on the surface of the carbon fiber layer, which is far away from the release layer, wherein the release force of the receiving layer to the carbon fiber layer is not less than 240 g/mm; and stripping the release layer on the surface of the carbon fiber layer to obtain the carbon fiber prepreg product. According to the invention, the carbon fiber layer is tightly attached through the bearing layer with high release force, and the carbon fiber layer does not need to be heated and melted, so that the orientation of carbon fibers distributed on the carbon fiber layer is prevented from changing, and the strength of the carbon fiber layer is ensured. Namely, the technical scheme of the invention can avoid the change of the orientation of the carbon fibers distributed on the carbon fiber layer, and ensure the strength of the carbon fiber layer of the obtained carbon fiber prepreg product.

The technical solution of the present invention is further described below with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the scope of the invention.