KR101771017B1 - Method for manufacturing hybrid type complex materials with continuous fiber reinforced thermoplasticity resins - Google Patents

Method for manufacturing hybrid type complex materials with continuous fiber reinforced thermoplasticity resins Download PDF

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KR101771017B1
KR101771017B1 KR1020150075851A KR20150075851A KR101771017B1 KR 101771017 B1 KR101771017 B1 KR 101771017B1 KR 1020150075851 A KR1020150075851 A KR 1020150075851A KR 20150075851 A KR20150075851 A KR 20150075851A KR 101771017 B1 KR101771017 B1 KR 101771017B1
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South Korea
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composite material
metal core
reinforced thermoplastic
continuous
continuous fiber
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KR1020150075851A
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Korean (ko)
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KR20160141210A (en
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이재섭
변의현
김동욱
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한화첨단소재 주식회사
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/10—Reinforcing macromolecular compounds with loose or coherent fibrous material characterised by the additives used in the polymer mixture
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
    • C08J5/046—Reinforcing macromolecular compounds with loose or coherent fibrous material with synthetic macromolecular fibrous material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/02—Fibres or whiskers
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/22—Thermoplastic resins

Abstract

The present invention relates to a method for producing a hybrid continuous fiber-reinforced thermoplastic composite material, which comprises a middle body 100 filled with CFRTPC (Continuous Fiber Reinforced Thermoplastic Composites) Core-reinforced thermoplastic composite material according to the present invention comprises a core (200).
According to the present invention, it is possible to manufacture at low cost with a high mechanical strength, to be lightweight, and to maximize interfacial adhesion, among other things, to achieve high impact performance by not separating steel at high speed collision.

Description

TECHNICAL FIELD [0001] The present invention relates to a hybrid continuous fiber reinforced thermoplastic composite material and a hybrid continuous fiber reinforced thermoplastic composite material,

The present invention relates to a hybrid continuous fiber-reinforced thermoplastic composite material manufacturing method, and more particularly, to a hybrid continuous fiber reinforced thermoplastic composite material which has high interfacial bonding force during high-speed collision, To a method for producing a fiber-reinforced thermoplastic composite material.

Thermoplastic composites are the focus of attention because of the emergence of lightweighting in the automotive sector, especially in the industrial sector as a whole.

In the past, substitution of lightweight metal replacement technology was mainly made up of recycled resin products and thermoplastic resin injection, but it lacks strength and stiffness.

In the following areas, SFT (Short-Fiber Reinforced Thermoplastic), a compound material in which reinforcing materials such as glass fiber and carbon fiber are dispersed in a short fiber form, is mainly made up, but these materials are also difficult to replace metals It is true.

In order to solve this problem, a thermoplastic composite reinforced with long fibers or continuous fibers has been used.

More specifically, it is classified into a thermoplastic composite reinforced with non-continuous fibers and a thermoplastic composite reinforced with continuous fibers.

The thermoplastic composites reinforced with non-continuous fibers are classified into GMT (Glass Mat Thermoplastic), G-LFT (Granule-Long Fiber Reinforced Thermoplastic) and LFT-D (Direct Long Fiber Reinforced Thermoplastic) Compression Flow Molding is divided into GMT and LFT-D, and injection molding is LFT-D.

In addition, CFRTPC (Continuous Fiber Reinforced Thermoplastic) is a typical thermoplastic composite reinforced with continuous fibers.

In the case of thermoplastic resin products, it is advantageous for product molding because it uses an injection process having a high degree of freedom of design, but it does not satisfy the physical properties, and when an engineering thermoplastic resin is used, it is not economical.

In particular, the continuous fiber-reinforced thermoplastic composite material has a high cost compared to high physical properties, and has a low degree of design freedom, so that only a small amount thereof is used for reinforcing the strength.

Therefore, in the case of a conventional front bumper beam of a car, a steel hybrid bumper beam is used to reinforce the strength, which is manufactured by inserting steel into the GMT material, which is inserted simply by putting the steel between GMT Since it has a simple mechanical coupling structure, the interfacial adhesion is very low, so that the GMT and steel are separated from each other in a high-speed impact of 80 km / hr or more, resulting in fracture and failing to secure collision stability.

In addition, due to the low interfacial adhesion, the mechanical strength of GMT is relatively low and the steel has to be inserted a lot, which not only increases the weight but also increases the cost of the parts.

In recent years, attempts have been made to develop aramid fiber-reinforced thermoplastic composites. This is because the aramid fibers are expensive (about 20 times as expensive as glass fibers), so they are used locally in small quantities,

1. Registration No. 1150469 (May 21, 2012) 2. Registration No. 1150470 (May 21, 2012) 3. Published Patent No. 2013-0139100 (2013.12.20) 4. Registration No. 0471561 (Feb. 2, 2005)

SUMMARY OF THE INVENTION [0006] The present invention has been made in view of the above-described problems in the prior art, and it is an object of the present invention to provide a bumper beam for a vehicle, The present invention provides a hybrid continuous fiber-reinforced thermoplastic composite material manufacturing method which can maximize interfacial adhesion of steel to suit the situation and prevent separation during high-speed collision, thereby reducing weight and increasing mechanical strength, There is a main purpose.

In order to achieve the above-mentioned object, the present invention provides a metal core 200 having a center, a middle body 100 having a circular rod shape surrounding the metal core 200 with CFRTPC (Continuous Fiber Reinforced Thermoplastic Composites) A method of producing a hybrid continuous fiber-reinforced thermoplastic composite material comprising: The preforming step (S100) includes a step of injecting continuous reinforcing fibers for reinforcement (S110), a continuous reinforcing process (S100) (S120) of spreading the fibers uniformly, and a step (S130) of impregnating the thermally sprayed continuous reinforcing fibers with the thermoplastic resin (S130). The impregnation process is performed by continuously reinforcing fibers The fibers are made to pass through or impregnate the resin; In the forming step S200, the surface of the metal core 200 is subjected to plasma or corona treatment, and the surface of the metal core 200 is covered with the thermoplastic resin. Wherein the structure of the heavy object 100 is formed such that the metal core 200 is planted in the center with the CFRTPC on the tape or the CFRTPC being rounded or braided so that the core 100 is centered; The post-treatment step S300 includes a step S310 of cooling the hybrid type composite material to stabilize the dimension, a step S320 of pulling the hybrid type composite material, and a step S33 of cutting the hybrid type composite material to a length for commercialization. A method for producing a fiber-reinforced thermoplastic composite material is provided.

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According to the present invention, it is possible to manufacture at low cost with a high mechanical strength, to be lightweight, and to maximize interfacial adhesion, among other things, to achieve high impact performance by not separating steel at high speed collision.

1 is an exemplary cross-sectional view of a hybrid continuous fiber reinforced thermoplastic composite according to the present invention.
FIG. 2 is an exemplary process drawing showing a method for producing a hybrid continuous fiber-reinforced thermoplastic composite material according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

The composite material according to the present invention includes a middle body 100 that is filled with CFRTPC (Continuous Fiber Reinforced Thermoplastic Composites) as shown in FIG. 1, a metal core 200 that is filled in the center of the middle body 100, As shown in FIG.

For convenience of explanation, the middle entity 100 is represented by a circular rod in FIG. 1, but the middle entity 100 is not limited to a circular shape, and may be an ellipse.

What is important is that the metal core 200 is filled at the center of the middle entity 100 by forming a CFRTPC (Continuous Fiber Reinforced Thermoplastic Composites) on the tape, or by CFRTPC or by rounding or braiding CFRTPC, There is one of the greatest features that we have constructed.

At this time, the metal core 200 is preferably a steel wire, and is not a concept of inserting steel into a conventional GMT, but may be a metal core 200 that is circular or braided around the metal core 200, In order to maximize the adhesive force at the interface between the metal core 200 and the inner core 100, the metal core 200, that is, the steel wire is pre-formed by corona discharge treatment or plasma treatment Should be maintained in a fully reformed state.

In this way, besides the simple mechanical bonding at the interface, since the chemical bonding is accompanied, the interfacial adhesion is remarkably increased, unlike the concept of simply inserting steel into GMT.

In addition, in the past, in the past, a steel bumper was simply pressed between two GMT sheets to form a bumper beam. However, the present invention is characterized in that a plurality of solid bodies 100, in which the metal core 200 is already filled, The degree of forming freedom is high and therefore it is easy to form, and since the bonding force at the interface is very high, almost no separation occurs even at a high speed collision, so that the excellent mechanical strength and fracture resistance can be increased .

The thermoplastic resin constituting the substance 100 of the composite material according to the present invention may be composed of one or more of PP, PA6, PA66, TPU, PET, HDPE, PPS and PEEK, As the reinforcing fiber, one or two or more of glass fiber (GF: glass fiber), carbon fiber, and aramid fiber may be used in combination.

Among them, it is particularly preferable that the polypropylene resin (PP Resin) is dispersed in a state of being impregnated with continuous fiber type glass fiber.

Hybrid continuous fiber reinforced thermoplastic composites thus manufactured are fused with materials such as GMT and LFT-D to form high-strength, lightweight products such as automotive stiffeners, bumper beams, and seat backs. It can be very useful for implementation.

Such a hybrid type continuous fiber reinforced thermoplastic composite material is produced in the same manner as in Fig.

As shown in FIG. 2, the hybrid continuous fiber-reinforced thermoplastic composite according to the present invention is manufactured through a pre-treatment step (S100), a molding step (S200), and a post-treatment step (S300).

At this time, the preprocessing step S100 is a step of creating a CFRTPC for constructing the middle entity 100. [

For this purpose, the pre-treatment step S100 includes a step of injecting continuous reinforcing fibers for reinforcement (S110), a step of spreading the inserted continuous reinforcing fibers (S120), a process of impregnating thermoplastic resin into the spread continuous reinforcing fibers S130).

Here, the continuous reinforcing fiber is preferably a continuous fiber type glass fiber, and the reason for spreading is to uniformly spread the continuous reinforcing fiber to improve the interfacial bonding force (impregnability) between the resin and the fiber.

In addition, the impregnation of the thermoplastic resin is achieved by injecting a thermoplastic resin, preferably a polypropylene resin, through a resin injector (not shown) connected to the filling unit when the spread reinforced fibers pass through the filling unit (not shown) Is impregnated with glass fibers in the form of reinforcing fibers, preferably continuous fibers.

In this case, the mixing ratio of the resin and the continuous reinforcing fiber is preferably 30-60: 40-70 by weight.

Meanwhile, in the forming step S200, the surface of the metal core 200, preferably a steel wire, is supplied in a plasma or corona-treated state, and the thermoplastic resin is spread in a state of being spread along the circumference of the metal core 200 to be supplied. And the continuous reinforced fibers impregnated with the resin are surrounded and filled to form the inner core body 100 having the metal core 200.

When the metal core 200 is formed in this way, a rod or a wood material having the metal core 200 can be formed and pressed to form a sheet.

In addition, in the case of making a rod having a shape, a plurality of roll forming units in which a diameter is gradually reduced within a certain range may be used to implement the hybrid type solid body 100 including the metal core 200.

Thereafter, a post-processing step S300 is performed. The post-processing step S300 includes a step S310 of cooling the hybrid type composite material, a step S320 of cutting the hybrid type composite material, .

In this case, the cooling process is to stabilize the dimension by cooling the heat received at the time of molding. Drawing is a pulling process through pulling, and cutting is a process of cutting to a certain length using a cutting machine for commercialization.

As described above, according to the present invention, CFRTPC is used as the intermediate substance 100 from the time of making the base material, and the hybrid core 100 is filled with the metal core 200 at the center thereof, Type composite material to maximize the interfacial bonding force, thereby achieving sufficient mechanical strength since separation at the interface does not occur even at a high-speed collision, and it is expected to be used in a light and inexpensive manner. .

100: medium substance 200: metal core

Claims (4)

delete delete delete A method of manufacturing a hybrid continuous fiber-reinforced thermoplastic composite material having a center metal core (200), a metal core (200) surrounded by CFRTPC (Continuous Fiber Reinforced Thermoplastic Composites) ;
The composite material manufacturing method includes a preprocessing step (S100), a forming step (S200), and a post-processing step (S300)
The preprocessing step S100 includes a step S110 of injecting the continuous reinforcing fibers for reinforcement, a spreading step S120 for uniformly spreading the continuous reinforcing fibers, a step S130 for impregnating the thermoplastic resin to the spread continuous reinforcing fibers Wherein the impregnating process is performed in such a manner that the continuous reinforcing fibers are passed through or impregnated with the resin so that the continuous reinforcing fibers and the resin of the specific content ratio are contained, respectively;
In the forming step S200, the surface of the metal core 200 is subjected to plasma or corona treatment, and the surface of the metal core 200 is covered with the thermoplastic resin. Wherein the structure of the heavy object 100 is formed such that the metal core 200 is planted in the center with the CFRTPC on the tape or the CFRTPC being rounded or braided so that the core 100 is centered;
The post-treatment step S300 includes a step S310 of cooling the hybrid type composite material to stabilize the dimension, a step S320 of pulling the hybrid type composite material, and a step S33 of cutting the hybrid type composite material to a length for commercialization. A method for manufacturing a fiber reinforced thermoplastic composite material.
KR1020150075851A 2015-05-29 2015-05-29 Method for manufacturing hybrid type complex materials with continuous fiber reinforced thermoplasticity resins KR101771017B1 (en)

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KR102219885B1 (en) * 2018-12-27 2021-02-24 한화솔루션 주식회사 Manhole using composite material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050023847A1 (en) * 2002-03-08 2005-02-03 N.V. Bekaert S.A. Reinforced impact beam
JP2008518810A (en) * 2004-11-03 2008-06-05 ナムローゼ・フェンノートシャップ・ベーカート・ソシエテ・アノニム Shock absorber with tape-like device attached
JP4184434B2 (en) 1996-04-29 2008-11-19 エヌケイ ケーブルズ オーワイ Multi-layer reinforced and stabilized cable structure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100471561B1 (en) 2001-12-28 2005-03-08 제일모직주식회사 Glass Reinforced Styrenic Thermoplastic Composition
KR101150469B1 (en) 2009-09-08 2012-06-01 (주)삼박 Forming apparatus and method of fiber reinforced thermoplastic composite material and product using the same
KR101150470B1 (en) 2009-09-09 2012-06-01 (주)삼박 Forming apparatus and method of fiber reinforced thermoplastic composite material and product using the same
KR101389721B1 (en) 2012-06-12 2014-04-29 한국과학기술연구원 Continuous method and apparatus for preparing fiber reinforced thermoplastic resin composite material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4184434B2 (en) 1996-04-29 2008-11-19 エヌケイ ケーブルズ オーワイ Multi-layer reinforced and stabilized cable structure
US20050023847A1 (en) * 2002-03-08 2005-02-03 N.V. Bekaert S.A. Reinforced impact beam
JP2008518810A (en) * 2004-11-03 2008-06-05 ナムローゼ・フェンノートシャップ・ベーカート・ソシエテ・アノニム Shock absorber with tape-like device attached

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