阅读说明：本技术 一种再生碳纤维增强热塑性笔记本电脑外壳及其制造方法 (Regenerated carbon fiber reinforced thermoplastic notebook computer shell and manufacturing method thereof ) 是由 杨斌 翁亚楠 李鑫 倪静娴 翟律军 陈俐 于 2020-04-13 设计创作，主要内容包括：本发明公开了一种再生碳纤维增强热塑笔记本电脑外壳及其制造方法,包括再生碳纤维增强热塑性材料壳体、以及热塑性树脂附件构成；再生碳纤维增强热塑性材料壳体由再生碳纤维无纺毡与热塑性材料粉末经热压成型制备,热塑性树脂附件通过预埋件热压而成；其中再生碳纤维无纺毡由经裂解回收碳纤维复合材料废弃物得到的再生碳纤维制备而成；再生碳纤维毡中的再生碳纤维丝长度达到50-100mm。本发明与传统纯热塑性树脂外壳相比,再生碳纤维毡制备的热塑性材料外壳强度得到提升,重量减轻45%。与新碳纤维复合材料外壳相比,使用再生碳纤维制备的外壳,成本下降50%,并且绿色环保,有利于循环利用。同时生产简便,效率提高。(The invention discloses a regenerated carbon fiber reinforced thermoplastic notebook computer shell and a manufacturing method thereof, comprising a regenerated carbon fiber reinforced thermoplastic material shell and a thermoplastic resin accessory; the regenerated carbon fiber reinforced thermoplastic material shell is prepared by hot-press molding of regenerated carbon fiber non-woven felt and thermoplastic material powder, and the thermoplastic resin accessory is formed by hot-pressing of an embedded part; wherein the regenerated carbon fiber non-woven felt is prepared from regenerated carbon fibers obtained by cracking and recovering carbon fiber composite waste; the length of the regenerated carbon fiber filaments in the regenerated carbon fiber felt reaches 50-100 mm. Compared with the traditional pure thermoplastic resin shell, the strength of the thermoplastic material shell prepared from the regenerated carbon fiber felt is improved, and the weight is reduced by 45%. Compared with the new carbon fiber composite material shell, the shell prepared by the regenerated carbon fiber has the advantages that the cost is reduced by 50 percent, and the shell is green and environment-friendly and is beneficial to cyclic utilization. Meanwhile, the production is simple and convenient, and the efficiency is improved.)

1. The recycled carbon fiber reinforced thermoplastic notebook computer shell is characterized by comprising a recycled carbon fiber reinforced thermoplastic shell material (1), wherein a thermoplastic resin accessory layer (2) is arranged on the recycled carbon fiber reinforced thermoplastic shell material (1).

2. The recycled carbon fiber reinforced thermoplastic notebook computer case of claim 1,

the regenerated carbon fiber reinforced thermoplastic shell material (1) is formed by hot-press bonding with the pre-embedded thermoplastic resin accessory layer (2).

3. The recycled carbon fiber reinforced thermoplastic notebook computer case of claim 1,

the regenerated carbon fiber reinforced thermoplastic shell material (1) comprises a regenerated carbon fiber non-woven felt layer (101) and thermoplastic resin layers (102) on the upper surface and the lower surface of the regenerated carbon fiber non-woven felt layer (101); the regenerated carbon fiber non-woven felt layer (101) and the thermoplastic resin layer (102) are formed through hot pressing.

4. The recycled carbon fiber reinforced thermoplastic notebook computer case of claim 3,

the length of the regenerated carbon fiber in the regenerated carbon fiber non-woven felt layer (101) is 50-100mm, and the length of the regenerated carbon fiber non-woven felt layer (101) is 50-500g/m²(ii) a The regenerated carbon fiber is obtained by cracking and recovering carbon fiber composite waste.

5. The recycled carbon fiber reinforced thermoplastic notebook computer housing according to claim 3, wherein the thermoplastic resin layer (102) is formed by mixing thermoplastic resin powder and an auxiliary agent;

the thermoplastic resin powder is selected from one or more of Polycarbonate (PC) powder, PA66 powder, PP powder and ABS powder.

6. The recycled carbon fiber reinforced thermoplastic notebook computer casing as claimed in claim 1, wherein the thermoplastic resin accessory layer (2) is made by mixing and granulating thermoplastic resin, 30% recycled carbon fiber and injection molding;

the thermoplastic resin is selected from one or more of Polycarbonate (PC) powder, PA66 powder, PP powder and ABS powder.

7. The manufacturing method of the recycled carbon fiber reinforced thermoplastic notebook computer casing as claimed in claim 1, comprising the steps of:

the method comprises the following steps: preparing regenerated carbon fibers;

step two: carrying out surface modification treatment on the regenerated carbon fiber to ensure that the regenerated carbon fiber and the thermoplastic resin have strong binding force;

step three: preparing a regenerated carbon fiber non-woven felt layer (101): the treated regenerated carbon fiber is prepared into a regenerated carbon fiber non-woven felt layer (101) through non-woven felt production equipment and technology, and the specification comprises 50-500g/m²；

Step four: thermoplastic resin powder and processing aids are spread on the upper surface and the lower surface of the regenerated carbon fiber non-woven felt layer (101) to prepare a regenerated carbon fiber reinforced thermoplastic shell material (1);

step five: preparing a thermoplastic resin accessory layer (2);

step six: pre-embedding the prepared thermoplastic resin accessory layer (2) into a mold;

step seven: weighing a proper amount of regenerated carbon fiber reinforced thermoplastic shell material (1), and placing the regenerated carbon fiber reinforced thermoplastic shell material in a mold;

step eight: hot-pressing and molding under the conditions of 100-300 ℃ and 20-50MPa to prepare the regenerated carbon fiber reinforced thermoplastic notebook computer shell.

8. The manufacturing method of recycled carbon fiber reinforced thermoplastic notebook computer casing as claimed in claim 1,

in the first step, the regenerated carbon fiber with the length of 50-100mm is selected and prepared by cracking and recycling.

9. The manufacturing method of recycled carbon fiber reinforced thermoplastic notebook computer casing as claimed in claim 1,

and step four, weighing 30-60wt% of the regenerated carbon fiber non-woven felt, 40-70wt% of the thermoplastic resin powder and 1-3wt% of the processing aid, uniformly spreading the thermoplastic resin powder and the processing aid on the upper surface and the lower surface of the regenerated carbon fiber non-woven felt layer (101), placing the materials in a hot-pressing rod, and performing hot-pressing forming under the conditions of 100 plus materials and 300 ℃ and 15-45MPa to prepare the regenerated carbon fiber reinforced thermoplastic shell material (1).

10. The manufacturing method of recycled carbon fiber reinforced thermoplastic notebook computer casing as claimed in claim 1,

and step five, mixing and granulating the thermoplastic resin powder and 30wt% of regenerated carbon fibers, and carrying out injection molding on the granules through an injection molding process to prepare the thermoplastic resin accessory layer (2).

Technical Field

The invention relates to the technical field of manufacturing of notebook computer shells made of recycled materials, in particular to a recycled carbon fiber reinforced thermoplastic notebook computer shell and a manufacturing method thereof.

Background

Notebook computers are gradually developing toward the middle and high end, and the casings thereof are pursuing lighter, thinner, higher strength and special appearance effects. At present, notebook computer housings are mainly prepared from thermoplastic plastics or new carbon fiber reinforced resins. The thermoplastic plastic notebook computer shell has the defects of large thickness, heavy weight, low strength and the like. The new carbon fiber reinforced resin for preparing the notebook computer shell has high cost and low production efficiency and can not be widely popularized.

Carbon fiber Composites (CFRP) have excellent properties such as light weight, high strength, high modulus, and the like, and are incomparable with other glass fiber reinforced composites, and thus are widely used in high and new technology industries such as aerospace, automobile industry, rail transit, new energy, sporting goods, and the like. With the rapid development of economy, the usage amount of CFRP in each field is rapidly increased, the generated waste CFRP is increased day by day, the total waste CFRP in 2019 exceeds 3 ten thousand tons, the components in the waste CFRP are not degradable, and if the waste CFRP is directly discarded into the environment, on the one hand, the environment is seriously polluted; on the other hand, the waste CFRPs often contain about 60% of high value-added carbon fibers, and the production of the carbon fibers is a high energy-consuming process, which will cause serious waste of resources if not recycled.

Chinese patent CN102609052A discloses a carbon fiber notebook computer shell and a manufacturing method thereof, the method adopts new carbon fiber cloth, the notebook computer shell is prepared by stacking a plurality of layers, the production efficiency is not high, and the price of the new carbon fiber is high.

Disclosure of Invention

The invention mainly solves the problems that the regenerated carbon fiber reinforced thermoplastic notebook computer shell and the manufacturing method thereof are developed aiming at the defects of large thickness, heavy weight, low strength, high price and the like of the notebook computer shell in the prior art, and can well solve the problems.

The technical scheme is as follows: a regenerated carbon fiber reinforced thermoplastic notebook computer shell comprises a regenerated carbon fiber reinforced thermoplastic shell material and a thermoplastic resin accessory layer on the regenerated carbon fiber reinforced thermoplastic shell material.

The invention is further improved in that the regenerated carbon fiber reinforced thermoplastic shell material and the embedded thermoplastic resin accessory layer are bonded by hot pressing.

The invention is further improved in that the regenerated carbon fiber reinforced thermoplastic shell material comprises a regenerated carbon fiber non-woven felt layer and thermoplastic resin layers on the upper surface and the lower surface of the regenerated carbon fiber non-woven felt layer; the regenerated carbon fiber non-woven felt layer and the thermoplastic resin layer are formed through hot pressing.

The invention has the further improvement that the length of the regenerated carbon fiber in the regenerated carbon fiber non-woven felt layer is 50-100mm, and the regenerated carbon fiber non-woven felt layer is 50-500g/m 2; the regenerated carbon fiber is obtained by cracking and recovering carbon fiber composite waste.

The invention is further improved in that the thermoplastic resin layer is formed by mixing thermoplastic resin powder and an auxiliary agent; the thermoplastic resin powder is selected from one or more of Polycarbonate (PC) powder, PA66 powder, PP powder and ABS powder.

The invention is further improved in that the thermoplastic resin accessory layer is made of thermoplastic resin and 30 percent of regenerated carbon fiber by mixing, granulating and injection molding; the thermoplastic resin is one or more selected from Polycarbonate (PC) powder, PA66 powder, PP powder and ABS powder.

A manufacturing method of a regenerated carbon fiber reinforced thermoplastic notebook computer shell comprises the following steps:

the method comprises the following steps: preparing regenerated carbon fibers;

step two: carrying out surface modification treatment on the regenerated carbon fiber to ensure that the regenerated carbon fiber and the thermoplastic resin have strong binding force;

step three: preparing a regenerated carbon fiber non-woven felt layer: preparing the treated regenerated carbon fiber into a regenerated carbon fiber non-woven felt layer with the specification of 50-500g/m by non-woven felt production equipment and technology²；

Step four: thermoplastic resin powder and processing aids are spread on the upper surface and the lower surface of the regenerated carbon fiber non-woven felt layer 101 to prepare a regenerated carbon fiber reinforced thermoplastic shell material;

step five: preparing a thermoplastic resin accessory layer;

step six: pre-embedding the prepared thermoplastic resin accessory layer into a mold;

step seven: weighing a proper amount of regenerated carbon fiber reinforced thermoplastic shell material, and placing the regenerated carbon fiber reinforced thermoplastic shell material in a mold;

step eight: hot-pressing and molding under the conditions of 100-300 ℃ and 20-50MPa to prepare the regenerated carbon fiber reinforced thermoplastic notebook computer shell.

The invention is further improved in that in the step one, regenerated carbon fibers with the length of 50-100mm are selected and prepared by cracking and recycling.

The further improvement of the invention is that step four, weighing 30-60wt% of the regenerated carbon fiber non-woven felt, 40-70wt% of the thermoplastic resin powder and 1-3wt% of the processing aid, uniformly spreading the thermoplastic resin powder and the processing aid on the upper surface and the lower surface of the regenerated carbon fiber non-woven felt layer, then placing the materials in a hot-pressing rod, and carrying out hot-pressing molding under the conditions of 100-300 ℃ and 15-45MPa to prepare the regenerated carbon fiber reinforced thermoplastic shell material.

The further improvement of the invention is that step five, the thermoplastic resin powder and 30wt% of regenerated carbon fiber are mixed and granulated, and the granules are injection molded to prepare the thermoplastic resin accessory layer through an injection molding process.

Compared with the prior art, the regenerated carbon fiber reinforced thermoplastic notebook computer shell and the manufacturing method thereof provided by the invention at least realize the following beneficial effects:

the thermoplastic notebook shell is prepared by the regenerated carbon fiber felt, wherein the length of the regenerated carbon fiber yarn reaches 50-100mm, and the performance of the composite material is outstanding because the longer length of the regenerated carbon fiber is reserved. Compared with the traditional pure thermoplastic resin shell, the strength of the thermoplastic material shell prepared from the regenerated carbon fiber felt is improved, and the weight is reduced by 45%. Compared with the new carbon fiber composite material shell, the shell prepared by the regenerated carbon fiber has the advantages that the cost is reduced by 50 percent, and the shell is green and environment-friendly and is beneficial to cyclic utilization. Meanwhile, the production is simple and convenient, and the efficiency is improved.

Of course, it is not specifically necessary for any one product that implements the invention to achieve all of the above-described technical effects simultaneously.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic structural diagram of a notebook computer case prepared under heat and pressure;

FIG. 2 is a schematic structural diagram of a recycled carbon fiber reinforced thermoplastic shell material;

wherein, 1-regenerating a carbon fiber reinforced thermoplastic shell material; 101-regenerated carbon fiber non-woven felt layer; 102-a thermoplastic resin layer; 2-thermoplastic resin accessory layer.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

As shown in fig. 1 and 2, a method for manufacturing a recycled carbon fiber reinforced thermoplastic notebook computer housing comprises the following steps:

the method comprises the following steps: preparing regenerated carbon fibers;

step two: carrying out surface modification treatment on the regenerated carbon fiber to ensure that the regenerated carbon fiber and the thermoplastic resin have strong binding force;

step three: preparing a regenerated carbon fiber non-woven felt layer 101: the treated regenerated carbon fiber is prepared into a regenerated carbon fiber non-woven felt layer 101 through non-woven felt production equipment and technology, and the specification comprises 50-500g/m²；

Step four: thermoplastic resin powder and processing aids are spread on the upper surface and the lower surface of the regenerated carbon fiber non-woven felt layer 101 to prepare a regenerated carbon fiber reinforced thermoplastic shell material 1;

step five: preparing a thermoplastic resin accessory layer 2;

step six: pre-embedding the prepared thermoplastic resin accessory layer 2 into a mold;

step seven: weighing a proper amount of regenerated carbon fiber reinforced thermoplastic shell material 1, and placing the regenerated carbon fiber reinforced thermoplastic shell material in a mold;

step eight: hot-pressing and molding under the conditions of 100-300 ℃ and 20-50MPa to prepare the regenerated carbon fiber reinforced thermoplastic notebook computer shell.

In order to further explain the embodiment, it should be noted that, in the first step, the regenerated carbon fiber with the length of 50-100mm is selected and prepared by cracking recovery.

For further explanation of this embodiment, it should be noted that, in the fourth step, 30 to 60wt% of the regenerated carbon fiber non-woven felt, 40 to 70wt% of the thermoplastic resin powder, and 1 to 3wt% of the processing aid are weighed, the thermoplastic resin powder and the processing aid are uniformly spread on the upper and lower surfaces of the regenerated carbon fiber non-woven felt layer 101, and the obtained product is placed in a hot-press roller, and hot-press molded under the conditions of 100-300 ℃ and 15-45MPa, so as to prepare the regenerated carbon fiber reinforced thermoplastic shell material 1.

To further explain this example, it should be noted that, in step five, the thermoplastic resin powder is mixed with 30wt% of the regenerated carbon fiber for granulation, and the granules are injection molded to prepare the thermoplastic resin accessory layer 2 through an injection molding process.