CN104249462A - Method for preparing carbon fiber reinforced thermoplastic composite material - Google Patents

Method for preparing carbon fiber reinforced thermoplastic composite material Download PDF

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Publication number
CN104249462A
CN104249462A CN 201310264012 CN201310264012A CN104249462A CN 104249462 A CN104249462 A CN 104249462A CN 201310264012 CN201310264012 CN 201310264012 CN 201310264012 A CN201310264012 A CN 201310264012A CN 104249462 A CN104249462 A CN 104249462A
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carbon fiber
resin
composite material
thermoplastic resin
method
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CN 201310264012
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Chinese (zh)
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孙晓光
孟秀青
安磊
田超
刘峰
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蓝星(北京)特种纤维技术研发中心有限公司
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/30Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS
    • B29K2201/00Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as reinforcement

Abstract

The invention discloses a method for preparing a carbon fiber reinforced thermoplastic composite material, which comprises the following steps: 1)alternatively paving carbon fiber and thermoplastic resin in a die, wherein a bottom layer and a top layer of the die are thermoplastic resin, closing the die and applying pressure; 2)accessing power supply to a carbon fiber layer, rapidly heating under current effect, when the temperature is higher than the melting point of thermoplastic resin, fusing thermoplastic resin, dipping carbon fiber under pressure; and 3)breaking power, cooling the die, and then opening the die to obtain the carbon fiber reinforced thermoplastic composite material. The method takes carbon fiber as a heat-generating body, the electrothermal conversion efficiency can reach as high as more than 90%, and the energy saving effect is obvious; simultaneously, carbon fiber is capable of melting thermoplastic resin and completing dipping, and has the advantages of short moulding time and good dipping effect, formation of good cross section of thermoplastic resin and fiber can be realized, composite material performance is increased, and processing of product with large thickness can be realized in short time.

Description

碳纤维增强热塑性复合材料制造方法 The method of manufacturing a carbon fiber reinforced thermoplastic composite material

技术领域 FIELD

[0001] 本发明涉及复合材料制造工艺,特别是涉及一种碳纤维增强热塑性复合材料制造方法。 [0001] The present invention relates to composite manufacturing processes, particularly to a method for producing a carbon fiber-reinforced thermoplastic composites.

背景技术 Background technique

[0002] 碳纤维增强热塑性复合材料是以碳纤维为增强材料,热塑性树脂为基体生产的高性能复合材料,具有质量轻,强度大,耐腐蚀,使用寿命长,耐冲击性能高的特点,而且相对于碳纤维增强热固性复合材料,其加热后可再次成型,是一种绿色可回收材料,因此引起了人们的关注和研究。 [0002] The carbon fiber reinforced high performance composites of thermoplastic composite material is a carbon fiber reinforced material, the thermoplastic resin matrix production, light weight, high strength, corrosion resistance, long life, high impact resistance characteristics, and with respect to carbon fiber reinforced thermoset composite materials, can be shaped again after heating, a green recyclable material, thus causing much attention and research.

[0003]目前碳纤维增强热塑型复合材料的制造方法主要有熔融浸溃法,粉末浸溃法,碳纤维/基体纤维混纺法,熔膜法等,都是均采用一定的方法将纤维和基体树脂混合,加热树脂使之融化,浸溃纤维,然后冷却定型得到碳纤维增强复合材料。 [0003] It carbon fiber reinforced manufacturing method of thermoplastic composites is molten dipping, powder dipping method, a carbon fiber / matrix fiber blend method, a melt film method, etc., are all employed in certain methods the fibers and the matrix resin were mixed and heated so as to melt the resin, the impregnated fibers and then cooling and molding to obtain a carbon fiber reinforced composite material. 但是由于热塑性树脂分子量高,因此在熔融状态下仍有很大的粘度,往往无法很好的浸溃纤维,形成不了良好的树脂/纤维截面,造成复合材料性能不高,而且要完全熔融树脂也需要一定的时间和能耗,尤其要加工厚度较大的产品会带来很大的困难。 However, due to the high molecular weight thermoplastic resin, still in a molten state so significant viscosity, are often not well impregnated fibers, can not form a good resin / fiber cross-section, resulting in the composite performance is not high, but also the molten resin to fully it takes time and energy, especially large thickness to be machined products will bring great difficulties.

发明内容 SUMMARY

[0004](一)要解决的技术问题 [0004] (a) To solve technical problems

[0005] 本发明的目的是提供一种制造碳纤维增强热塑性复合材料的方法,使热塑性树脂与纤维能够形成良好的截面,提高复合材料的性能,并且在短时间内实现加工厚度较大的女口广叩ο [0005] The object of the present invention is to provide a method of producing a carbon fiber reinforced thermoplastic composite material, the thermoplastic resin and fibers capable of forming a good profile, improve the performance of the composite material, processing and achieve greater thickness in a short time female mouth Canton knock ο

[0006] (二)技术方案 [0006] (ii) Technical Solution

[0007] 为了解决上述技术问题,本发明提供一种碳纤维增强热塑性复合材料制造方法,其包括如下步骤: [0007] To solve the above problems, the present invention provides a method for producing a carbon fiber-reinforced thermoplastic composite material, comprising the steps of:

[0008] 步骤(1):将碳纤维与热塑性树脂交替铺放入模具中,模具最底层和最上层均为热塑性树脂,闭模施加压力; [0008] Step (1): the carbon fibers and the thermoplastic resin are alternately laid into the mold, the bottom mold and the top layer are a thermoplastic resin, the mold closing pressure is applied;

[0009] 步骤(2):在碳纤维层接入电源,使之在电流作用下快速升温,温度高于热塑性树脂熔点后,热塑性树脂开始熔融,在压力下浸溃碳纤维; [0009] Step (2): carbon fiber layer is plugged in, so that rapid heating action at a current, a temperature higher than the melting point of the thermoplastic resin, the thermoplastic resin begins to melt, the impregnated carbon fibers under pressure;

[0010] 步骤(3):断开电源,模具冷却后开模,得到碳纤维增强热塑性复合材料。 [0010] Step (3): disconnect the power, the mold was cooled mold to obtain a carbon fiber-reinforced thermoplastic composite.

[0011] 其中,所述碳纤维为碳纤维丝、碳纤维织物、碳纤维格栅、碳纤维毡、碳纤维与其他纤维混杂织物、碳纤维与其他纤维混杂毡、碳纤维/树脂复合筋、碳纤维/树脂复合格栅中的任一种。 [0011] wherein the carbon fiber carbon fiber yarn, carbon fibers, carbon fiber grid, carbon fiber felt, carbon fibers and other fibers mixed fabrics, carbon fibers and other fiber mixed felt, carbon fiber / resin composite ribs, carbon fiber / resin composite grid in the range either.

[0012] 其中,所述热塑性树脂为聚乙烯、聚丙烯、聚氯乙烯、聚氨酯、聚碳酸酯、聚甲醛、尼龙、聚四氟乙烯、聚醚醚酮中的任一种。 [0012] wherein the thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride, polyurethane, polycarbonate, polyoxymethylene, nylon, polytetrafluoroethylene, any one of polyether ether ketone.

[0013] 其中,所述热塑性树脂为树脂膜、树脂粉体、树脂母粒、或树脂预制件。 [0013] wherein the thermoplastic resin is a resin film, resin powder, resin masterbatch, a resin or preform.

[0014] 其中,所述步骤(1)中,闭模施加的压力在10_50MPa之间。 Pressure [0014] wherein said step (1), is applied between the mold closing 10_50MPa.

[0015] 其中,所述步骤(2)中,碳纤维层内接入电源时所通入的电流为1-10A。 [0015] wherein, in the step (2), the inner layer of the carbon fiber into the access through the power supply current 1-10A.

[0016](三)有益效果 [0016] (c) beneficial effect

[0017] 上述技术方案所提供的碳纤维增强热塑性复合材料制造方法,以碳纤维本身为发热体,由于碳纤维属于乱层石墨结构,直径细,外表面积大,通电后产生的热量很容易散发,电热转化效率高达90%以上,节能效果十分显著;同时,由于碳纤维是在内部融化热塑性树脂并完成浸溃的,具有成型时间短、浸溃效果好的优点,能够实现热塑性树脂与纤维形成良好的截面,提高复合材料的性能,并且在短时间内实现加工厚度较大的产品。 [0017] The technical solution provided a carbon fiber reinforcing method for producing a thermoplastic composite material, carbon fiber itself as the heating body, since the carbon fibers belong to a graphite structure turbostratic, small diameter, large external surface area, the heat generated by the energization easily circulated, electric conversion efficiency of more than 90%, energy saving effect is very significant; Meanwhile, since the carbon fibers are in the interior of melting the thermoplastic resin and complete impregnated, with a short molding time, dipping and good effect can be achieved thermoplastic resin and fibers to form a good cross-section, improve the performance of the composite material, and to achieve a greater thickness of the product in a short time processing.

具体实施方式 detailed description

[0018] 下面结合实施例,对本发明的具体实施方式作进一步详细描述。 [0018] Example embodiments in conjunction with the following, specific embodiments of the present invention will be further described in detail. 以下实施例用于说明本发明,但不用来限制本发明的范围。 The following examples serve to illustrate the present invention but are not intended to limit the scope of the present invention.

[0019] 本实施例提供一种碳纤维增强热塑性复合材料制造方法,其包括如下步骤: [0019] The present embodiment provides a method for producing a carbon fiber-reinforced thermoplastic composite material, comprising the steps of:

[0020] 步骤(1):将碳纤维与热塑性树脂交替铺放入模具中,模具最底层和最上层均为热塑性树脂,闭模施加压力; [0020] Step (1): the carbon fibers and the thermoplastic resin are alternately laid into the mold, the bottom mold and the top layer are a thermoplastic resin, the mold closing pressure is applied;

[0021] 步骤(2):在碳纤维层接入电源,使之在电流作用下快速升温,温度高于热塑性树脂熔点后,热塑性树脂开始熔融,在压力下浸溃碳纤维; [0021] Step (2): carbon fiber layer is plugged in, so that rapid heating action at a current, a temperature higher than the melting point of the thermoplastic resin, the thermoplastic resin begins to melt, the impregnated carbon fibers under pressure;

[0022] 步骤(3):断开电源,模具冷却后开模,得到碳纤维增强热塑性复合材料。 [0022] Step (3): disconnect the power, the mold was cooled mold to obtain a carbon fiber-reinforced thermoplastic composite.

[0023] 其中,上述制造方法中,所述碳纤维为碳纤维丝、碳纤维织物、碳纤维毡、碳纤维与其他纤维混杂织物、碳纤维与其他纤维混杂毡中的任一种;所述热塑性树脂为聚乙烯、聚丙烯、聚氯乙烯、聚氨酯、聚碳酸酯、聚甲醛、尼龙、聚四氟乙烯、聚醚醚酮中的任一种;所述热塑性树脂为树脂膜、树脂粉体、树脂母粒、或树脂预制件。 [0023] wherein the above manufacturing method, the carbon fiber is a carbon fiber yarn, carbon fibers, carbon fiber felt, carbon fibers and other fibers mixed fabrics, carbon fibers, any other fiber hybrid mat; and the thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride, polyurethane, polycarbonate, polyoxymethylene, nylon, polytetrafluoroethylene, any one of polyether ether ketone; the thermoplastic resin is a resin film, resin powder, resin masterbatch, or resin preform.

[0024] 进一步地,上述制造方法中,根据所用热塑性树脂的类型,闭模施加的压力在10-50MPa之间,该压力太大,碳纤维层会被树脂冲变形,该压力太小,树脂无法充分浸溃纤维;根据产品的厚度、所用热塑性树脂的类型,碳纤维层接入电源时所通入的电流为1-10A,该电流过大,会使温度过高,破坏树脂结构,甚至将树脂烧焦,该电流过小,树脂粘度大,无法充分浸溃纤维。 Pressure [0024] Furthermore, the above-described manufacturing method, depending on the type of thermoplastic resin used, mold closing between 10-50MPa applied, the pressure is too great, the carbon fiber layer is washed deformation of the resin, the pressure is too small, the resin can not be fully impregnated fibers; the thickness of the product, on the type, the carbon fiber layer of the thermoplastic resin in the access into 1-10A supply current, this current is too large, high temperature, structure destruction of the resin, even the resin charred, the current is too small, the resin viscosity is large, the fibers can not be sufficiently impregnated.

[0025] 上述方法可以用于制造碳纤维增强热塑性PVC井盖,其过程如下: [0025] The above-described method can be used for producing a carbon fiber-reinforced thermoplastic PVC covers, which process is as follows:

[0026] 首先用注塑或模压的方法制得热塑性塑料预制件A1和塑性塑料预制件B3 ; [0026] First, a method for injection molding or made of thermoplastic plastic preforms and plastic preforms A1 B3;

[0027] 将碳纤维织物放入热塑性塑料预制件A1和塑性塑料预制件B3之间,然后放入成型模具中; [0027] The carbon fiber fabric placed between the thermoplastic plastic preforms and plastic preforms A1 B3, and then placed in a molding die;

[0028] 通电加热,PVC树脂开始熔融,浸溃碳纤维织物; [0028] The conduction heating, PVC resin starts to melt, the impregnated carbon fiber fabric;

[0029] 浸溃完成后,断电冷却,得到碳纤维增强热塑性PVC井盖。 After [0029] completion of dipping, cooling off, to obtain a carbon fiber-reinforced thermoplastic PVC covers.

[0030] 该种方法工艺简单,能耗低,成型快,所制得的碳纤维增强热塑性PVC井盖质量轻,强度大,耐冲击性能优越。 [0030] This kind of method is simple, low energy consumption, rapid forming, the resulting carbon fiber-reinforced thermoplastic PVC covers light weight, high strength, excellent impact resistance.

[0031] 由以上实施例可以看出,本发明以碳纤维本身为发热体,由于碳纤维属于乱层石墨结构,直径细,外表面积大,通电后产生的热量很容易散发,电热转化效率高达90%以上,节能效果十分显著;同时,由于碳纤维是在内部融化热塑性树脂并完成浸溃的,具有成型时间短、浸溃效果好的优点,能够实现热塑性树脂与纤维形成良好的截面,提高复合材料的性能,并且在短时间内实现加工厚度较大的产品。 [0031] As can be seen from the above embodiments, the present invention is a carbon fiber itself as the heat generating element, since the carbon fiber belongs turbostratic structure, small diameter, the appearance of a large area, the heat generated by the energization easily circulated, electric conversion efficiency up to 90% above, energy-saving effect is very significant; Meanwhile, since the carbon fibers are in the interior of melting the thermoplastic resin and complete impregnated, with a short molding time, dipping and good effect can be achieved thermoplastic resin and fibers to form a good cross-section, improved composite material performance, and to achieve a greater thickness of the product processed in a short time.

[0032] 以上所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明技术原理的前提下,还可以做出若干改进和替换,这些改进和替换也应视为本发明的保护范围。 [0032] The above are only preferred embodiments of the present invention, it should be noted that those of ordinary skill in the art, in the art without departing from the principles of the present invention is provided, you can make various modifications and substitutions, these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (6)

  1. 1.一种碳纤维增强热塑性复合材料制造方法,其特征在于,包括如下步骤: 步骤(I):将碳纤维与热塑性树脂交替铺放入模具中,模具最底层和最上层均为热塑性树脂,闭模施加压力; 步骤(2):在碳纤维层接入电源,使之在电流作用下快速升温,温度高于热塑性树脂熔点后,热塑性树脂开始熔融,在压力下浸溃碳纤维; 步骤(3):断开电源,模具冷却后开模,得到碳纤维增强热塑性复合材料。 CLAIMS 1. A method for producing a carbon fiber-reinforced thermoplastic composite material, characterized by, comprising the following steps: Step (the I): the carbon fibers and the thermoplastic resin are alternately laid into the mold, the bottom mold and the thermoplastic resin are uppermost, closed mold applying pressure; step (2): after the access to power the carbon fiber layer, so that rapid heating at a current action, a temperature higher than the thermoplastic resin, the melting point of the thermoplastic resin begins to melt at a pressure impregnated carbon fiber; step (3): off turn on the power, the mold is cooled after opening the mold to obtain a carbon fiber-reinforced thermoplastic composite.
  2. 2.根据权利要求1所述的碳纤维增强热塑性复合材料制造方法,其特征在于,所述碳纤维为碳纤维丝、碳纤维织物、碳纤维格栅、碳纤维毡、碳纤维与其他纤维混杂织物、碳纤维与其他纤维混杂毡、碳纤维/树脂复合筋、碳纤维/树脂复合格栅中的任一种。 The carbon fibers of the reinforcement method for manufacturing a thermoplastic composite material as claimed in claim, wherein said carbon fibers are carbon fiber yarn, carbon fibers, carbon fiber grid, carbon fiber felt, carbon fibers and other fibers mixed fabrics, carbon fibers mixed with other fibers felt, carbon fiber / resin composite ribs, any carbon fiber / resin composite grille.
  3. 3.根据权利要求1所述的碳纤维增强热塑性复合材料制造方法,其特征在于,所述热塑性树脂为聚乙烯、聚丙烯、聚氯乙烯、聚氨酯、聚碳酸酯、聚甲醛、尼龙、聚四氟乙烯、聚醚醚酮中的任一种。 3. The carbon fiber reinforcement of the method for manufacturing a thermoplastic composite material as claimed in claim, wherein the thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride, polyurethane, polycarbonate, polyoxymethylene, nylon, PTFE ethylene, any one of polyether ether ketone.
  4. 4.根据权利要求3所述的碳纤维增强热塑性复合材料制造方法,其特征在于,所述热塑性树脂为树脂膜、树脂粉体、树脂母粒、或树脂预制件。 Carbon fiber according to claim 3, wherein said method for producing a reinforced thermoplastic composite material, wherein the thermoplastic resin is a resin film, resin powder, resin masterbatch, a resin or preform.
  5. 5.根据权利要求1所述的碳纤维增强热塑性复合材料制造方法,其特征在于,所述步骤(I)中,闭模施加的压力在10-50MPa之间。 The carbon fiber according to claim 1, said method of manufacturing a reinforced thermoplastic composite material, characterized in that, between the pressure in said step (I), a mold closing applied 10-50MPa.
  6. 6.根据权利要求1所述的碳纤维增强热塑性复合材料制造方法,其特征在于,所述步骤(2)中,碳纤维层内接入电源时所通入的电流为1-10A。 6. The carbon fiber according to claim 1, said method for producing a reinforced thermoplastic composite material, characterized in that said step (2), the inner layer of the carbon fiber into the access through the power supply current 1-10A.
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CN105082560A (en) * 2015-09-16 2015-11-25 山东格瑞德集团有限公司 Production technology of environment-friendly thermoplastic sports products
CN105479768A (en) * 2015-11-23 2016-04-13 西北工业大学 Self-resistance electric heating curing method for resin-based carbon fiber composite material
CN107428997A (en) * 2015-04-03 2017-12-01 乐金华奥斯有限公司 Porous fiber-reinforced composite and method for preparing same

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