KR101951205B1 - Fiber reinforced composite material and method of manufacturing the same - Google Patents
Fiber reinforced composite material and method of manufacturing the same Download PDFInfo
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- KR101951205B1 KR101951205B1 KR1020150059001A KR20150059001A KR101951205B1 KR 101951205 B1 KR101951205 B1 KR 101951205B1 KR 1020150059001 A KR1020150059001 A KR 1020150059001A KR 20150059001 A KR20150059001 A KR 20150059001A KR 101951205 B1 KR101951205 B1 KR 101951205B1
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- 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
- C08K3/10—Metal compounds
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- 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
- C08K7/04—Fibres or whiskers inorganic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2350/00—Acoustic or vibration damping material
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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
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/22—Thermoplastic resins
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Abstract
The present invention provides a fiber-reinforced composite material excellent in strength and rigidity and at the same time excellent in shock absorption performance, and is provided with a fiber-reinforced composite material comprising a thermoplastic resin, inorganic fibers and piezoelectric particles, Thereby preparing a thermoplastic resin composition; Mixing inorganic fibers with the thermoplastic resin composition; And extruding the thermoplastic resin composition to produce a fiber-reinforced composite material.
Description
The present invention relates to a fiber-reinforced composite material and a method of manufacturing the same.
A composite material used for various purposes is formed by combining two or more materials. Generally, the composite material can be produced by mixing fibers or the like as a reinforcing material in a polymer resin. Japanese Patent Application Laid-Open No. 1995-149947 discloses a thermoplastic resin composition containing a fibrous filler and a silicone rubber as essential components, and a molded article produced using the same. Such a composite material can be used in industries requiring high strength and rigidity. However, as the strength and rigidity are increased, the impact absorption performance or flexibility is lowered, so that not only excellent strength and rigidity but also excellent shock absorption performance and flexibility are secured Research is needed.
An embodiment of the present invention provides a fiber-reinforced composite material excellent in strength and rigidity and excellent in shock absorption performance.
Another embodiment of the present invention provides a method of making the fiber-reinforced composite material.
The present invention can provide a fiber-reinforced composite material exhibiting improved bending properties and impact properties by including a thermoplastic resin, inorganic fibers and piezoelectric particles in order to provide a fiber-reinforced composite material excellent in strength and rigidity and excellent in shock absorption performance.
According to another aspect of the present invention, there is provided a method of providing a fiber-reinforced composite material, comprising: preparing a thermoplastic resin composition by mixing a thermoplastic resin and piezoelectric particles; Mixing inorganic fibers with the thermoplastic resin composition; And a step of extruding the thermoplastic resin composition to produce a fiber-reinforced composite material, thereby providing a method of manufacturing a fiber-reinforced composite material exhibiting high process efficiency.
The fiber-reinforced composite material is not only excellent in strength and rigidity, but also has excellent shock absorption performance and can be used for various purposes.
Through the process for producing a fiber-reinforced composite material, a fiber-reinforced composite material having high process efficiency, excellent strength and rigidity, and improved impact absorption performance can be manufactured.
Figure 1 schematically illustrates a fiber-reinforced composite material according to one embodiment of the present invention.
2 is a schematic view illustrating a method of manufacturing the fiber-reinforced composite material according to another embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which: These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art to which the invention pertains. Only.
Like reference numerals refer to like elements throughout the specification and are exaggerated or exaggerated for clarity in describing particular areas or configurations in the figures.
In one embodiment of the present invention, there is provided a fiber-reinforced composite material comprising a thermoplastic resin, inorganic fibers and piezoelectric particles.
Typically, composites can be made by blending a fiber reinforcement into a thermoplastic resin. The higher the content of the fiber reinforcing material, the higher the strength and stiffness of the composite material, but the mechanical strain is decreased to increase the brittleness or the impact absorption performance.
The fiber-reinforced composite material may include piezoelectric particles together with the thermoplastic resin and the inorganic fiber to improve the shock absorption performance while ensuring adequate strength and rigidity. The piezoelectric particles mean spherical particles having piezoelectricity, and piezoelectricity refers to a phenomenon in which an electric field is generated in proportion to such pressure or force when an external pressure or force is applied to an object.
By including the piezoelectric particles, the fiber-reinforced composite material can have excellent vibration attenuating ability, and thus can have excellent resistance to impact. In addition, based on the excellent vibration damping ability, the mechanical, electrical, and thermal properties can be improved and utilized for various purposes.
1 schematically illustrates a fiber-reinforced
The fiber-reinforced
Specifically, the piezoelectric particles may have an average diameter of about 3 占 퐉 to about 10 占 퐉. When the average diameter of the piezoelectric particles is less than about 3 탆, the impact absorption performance may be deteriorated or the initial dispersibility may be decreased during the manufacturing process, resulting in a problem that the finally-produced fiber-reinforced composite material does not have uniform physical properties as a whole. If the average diameter of the piezoelectric particles exceeds about 10 탆, the compatibility with the inorganic fibers may deteriorate or the specific gravity may be excessively increased. This may cause a problem of deteriorating the surface properties of the fiber-reinforced composite material can do.
The piezoelectric particles may be formed of a material having piezoelectricity such as lead zirconate titanate, lead titanate, barium titanate, BaTiO3, lithium niobate (LiNbO) ≪ / RTI >
Specifically, the fiber-reinforced composite material may include about 1 to about 10 parts by weight of the piezoelectric particles with respect to 100 parts by weight of the thermoplastic resin. If the piezoelectric particles are contained in an amount of less than about 1 part by weight, sufficient impact absorption performance may not be obtained. If the amount of the piezoelectric particles is more than about 10 parts by weight, the production cost may be excessively increased, the specific gravity may become too high, or the surface properties of the fiber-reinforced composite may be deteriorated.
The fiber-reinforced composite material may include a thermoplastic resin, and the thermoplastic resin may be an aromatic vinyl resin, a rubber modified aromatic vinyl resin, a polyphenylene ether resin, a polycarbonate resin, a polyester resin, a methacrylate resin A resin selected from the group consisting of polyarylene sulfide resin, polyamide resin, polyvinyl chloride resin, polyolefin resin, and combinations thereof.
Specifically, the thermoplastic resin may include a polyolefin-based resin, and more specifically, may include a polypropylene-based resin. In this case, the fiber-reinforced composite material may be advantageous in improving both the cost strength and the impact absorbing performance. The polypropylene resin may include polypropylene alone or a resin obtained by copolymerizing polypropylene and other types of monomers, and examples thereof include a polypropylene homopolymer resin, a propylene-ethylene copolymer resin, a propylene-butene copolymer resin, an ethylene- Propylene-butene copolymer resin, and a combination thereof.
The fiber-reinforced composite material may include inorganic fibers to improve strength and rigidity, and the inorganic fibers may include one selected from the group consisting of glass fibers, carbon fibers, and combinations thereof.
Specifically, the cross section of the inorganic fibers may have an average diameter of from about 15 탆 to about 20 탆, for example, from about 16 탆 to about 19 탆. When the cross section of the inorganic fibers has an average diameter of less than about 15 占 퐉, the strength of the composite material may be considerably deteriorated. When the inorganic fibers have an average diameter exceeding about 20 占 퐉, compatibility with the piezoelectric particles is deteriorated .
In addition, the inorganic fibers may be contained in the fiber-reinforced composite material in the form of continuous fibers. The inclusion of the inorganic fibers in the form of continuous fibers means that the fibers are present in a continuous form within the fiber-reinforced composite material depending on the final size thereof. The inorganic fibers included in the form of the continuous fibers may have a length corresponding to a range from the minimum length to the maximum length depending on the final size of the fiber-reinforced composite material. By including the inorganic fibers in the form of continuous fibers, it can be advantageous to improve the rigidity and strength of the fiber-reinforced composite material, and can be appropriately mixed with the piezoelectric particles in position to improve both durability and impact absorption performance.
The inorganic fibers may have a single orientation in the fiber-reinforced composite material. The fact that the inorganic fibers have a single orientation means that the inorganic fibers are impregnated in the thermoplastic resin and oriented in one direction. At this time, the acute angle formed by the predetermined two inorganic fibers in the fiber-reinforced composite material may be about 10 degrees or less, specifically about 5 degrees or less.
The inorganic fibers have a unidirectional orientation in the fiber-reinforced composite material, which is advantageous in securing excellent strength and rigidity, and is advantageously mixed with the piezoelectric particles appropriately in position to improve the impact absorption performance of the fiber-reinforced composite material .
The fiber-reinforced composite material may include about 40 to about 70 parts by weight of the inorganic fibers, for example about 50 to 70 parts by weight, based on 100 parts by weight of the thermoplastic resin. When the inorganic fibers are contained in an amount less than the above range, it is difficult to secure the required strength and rigidity of the composite material. When the inorganic fibers are contained in the above range, the compatibility with the piezoelectric particles is deteriorated and impregnation with the thermoplastic resin as the base material is incomplete So that the production of the fiber-reinforced composite material itself can not be a problem.
The fiber-reinforced composite material includes both a thermoplastic resin, inorganic fibers, and piezoelectric particles, thereby realizing excellent strength and rigidity, and at the same time exhibiting excellent shock absorption performance.
Specifically, the drop impact strength of the fiber-reinforced composite material may be about 20 to about 30 J / mm. The 'peak impact strength' is a measure of the resistive force of an arbitrary object to withstand a momentary concentrated external force, and can be measured by a method of measuring an impact resistance according to ASTM D3763. When the peak impact strength is less than about 20 J / mm, sufficient impact performance can not be ensured and it is difficult to apply the component to parts requiring impact performance.
Another embodiment of the present invention is a method of manufacturing a thermoplastic resin composition, comprising: preparing a thermoplastic resin composition by mixing a thermoplastic resin and piezoelectric particles; Mixing inorganic fibers with the thermoplastic resin composition; And pressing the thermoplastic resin composition to produce a fiber-reinforced composite material.
The method for producing a fiber-reinforced composite material can produce a fiber-reinforced composite material comprising a thermoplastic resin, inorganic fibers and piezoelectric particles. Specifically, the inorganic fibers and the piezoelectric particles are uniformly dispersed or impregnated in the thermoplastic resin, A fiber-reinforced composite material that realizes impact absorption performance can be manufactured.
Specifically, the method for producing a fiber-reinforced composite material may include a step of mixing a thermoplastic resin and piezoelectric particles to produce a thermoplastic resin composition. The matters concerning the piezoelectric particles are as described above.
The thermoplastic resin and the piezoelectric particles may be mixed and injected into the extruder at the same time or may be mixed by preparing the piezoelectric particles in a masterbatch form and then injecting them into the thermoplastic resin raw material.
At this time, the step of preparing the thermoplastic resin composition may be performed at about 180 ° C to about 240 ° C. By producing the thermoplastic resin composition at the temperature within the above-mentioned range, it is possible to produce a composite material having excellent physical properties at the same time while securing excellent processability.
When the thermoplastic resin is produced at a temperature lower than about 180 ° C, the thermoplastic resin composition may not have an adequate viscosity and may deteriorate workability in a subsequent process. When the thermoplastic resin is produced at a temperature higher than about 240 ° C, The physical properties of the composite material may be deteriorated or foreign materials may be generated due to carbonization of the resin, and the physical properties of the piezoelectric particles may be deteriorated.
In addition, the method for producing a fiber-reinforced composite material may include mixing inorganic fibers with the thermoplastic resin composition. The matters concerning the inorganic fibers are as described above.
FIG. 2 is a schematic view illustrating a method of manufacturing a fiber-reinforced composite material according to an embodiment of the present invention. The process for producing the thermoplastic resin composition is not shown in FIG.
Referring to FIG. 2, the inorganic fibers are extracted from roving-type continuous fibers to be introduced into the impregnation mold, and the inorganic fibers may be injected so as to have a single orientation in the composite material. The inorganic fibers have unidirectional orientation, so that the strength and rigidity of the fiber-reinforced composite material can be easily secured to a desired level.
At the same time as the inorganic fibers are introduced into the impregnation mold, the thermoplastic resin composition can be introduced into the impregnation mold. For example, the thermoplastic resin composition can be introduced through an extruder. As a result, the thermoplastic resin composition containing the thermoplastic resin and the piezoelectric particles can be impregnated into the inorganic fibers.
The method for producing a fiber-reinforced composite material may include a step of pressing the thermoplastic resin composition to produce a composite material. The thermoplastic resin composition includes a thermoplastic resin, piezoelectric particles and inorganic fibers, and the composite material can be manufactured by pressing the thermoplastic resin composition using a pressing process.
Specifically, the step of pressing the thermoplastic resin composition to produce a fiber-reinforced composite material may be performed using a calendar process. Specifically, the thermoplastic resin composition may include both a thermoplastic resin, piezoelectric particles and inorganic fibers. By pressing the thermoplastic resin composition by a calendering process, it is possible to easily ensure unidirectional orientation of the continuous fiber type inorganic fibers, . In addition, by using the calendering process, it is possible to secure a uniform thickness of the fiber-reinforced composite material, and excellent surface physical properties can be secured. As a result, the fiber-reinforced composite material can secure excellent stiffness, surface properties, and shock absorption performance at the same time.
The fiber-reinforced composite material produced by the above-described method for producing a fiber-reinforced composite material can secure both excellent strength and shock-absorbing performance by including the inorganic fibers and the piezoelectric particles in the thermoplastic resin, and can be utilized for various purposes.
Hereinafter, specific embodiments of the present invention will be described. However, the embodiments described below are only intended to illustrate or explain the present invention, and thus the present invention should not be limited thereto.
<
Example
And
Comparative Example
>
Example One
1 part by weight of piezoelectric particles of lead zirconate titanate material were mixed at 220 캜 with respect to 100 parts by weight of a thermoplastic resin composed of a polypropylene homopolymer resin to prepare a thermoplastic resin composition. Subsequently, 60 parts by weight of glass fibers were put into 100 parts by weight of the thermoplastic resin so as to be contained in the composite material in the form of continuous fibers from a roving shape. At this time, the glass fibers were injected so as to exhibit a single orientation in the composite. The thermoplastic resin composition was impregnated with the glass fiber and pressed by a calendar process to produce a sheet having a thickness of 0.3 mm.
Example 2
A sheet was prepared in the same manner as in Example 1, except that 5 parts by weight of the piezoelectric particles were mixed with 100 parts by weight of the thermoplastic resin.
Example 3
A sheet was prepared in the same manner as in Example 1 except that piezoelectric particles of barium titanate were used instead of piezoelectric particles of lead zirconate titanate as the piezoelectric particles.
Example 4
A sheet was prepared in the same manner as in Example 2 except that piezoelectric particles of barium titanate were used instead of piezoelectric particles of lead zirconate titanate as the piezoelectric particles.
Comparative Example One
A sheet was prepared in the same manner as in Example 1, except that the piezoelectric particles were not included.
<Evaluation>
9 sheets of the sheets prepared in Examples and Comparative Examples were laminated so that the orientation directions of the inorganic fibers included in the adjacent sheets were perpendicular to each other and then pressed to produce a panel-form fiber-reinforced composite material. Namely, nine sheets of each of the sheets prepared in Examples and Comparative Examples were laminated in a so-called 0 ° / 90 ° / 0 ° structure and pressed to produce a fiber-reinforced composite material. Then, the properties of the fiber-reinforced composite material were evaluated according to Examples 1 and 2 to be described later.
Experimental Example One: Flexural strength And Flexural modulus Measure
The flexural strength and flexural modulus of the fiber-reinforced composite material were measured at room temperature 23 ° C according to the flexural property measurement method (ASTM D790 method). The results are shown in Table 1 below.
Experimental Example 2: Measurement of impact strength
The fiber-reinforced composite material was measured for impact strength at 23 ° C at room temperature according to the method of measuring the strength of the impact strength (ASTM D3763). The results are shown in Table 1 below.
Referring to the results of Table 1, the fiber-reinforced composites of Examples 1 to 4 exhibited excellent bending properties and impact strengths in comparison with the fiber-reinforced composites of Comparative Example 1 which did not include piezoelectric particles. Can be confirmed.
100: fiber reinforced composite
10: inorganic fiber
20: piezoelectric particles
Claims (16)
The piezoelectric particles have an average diameter of 3 탆 to 10 탆,
Wherein the piezoelectric particles comprise one selected from the group consisting of lead zirconate titanate, lead titanate, lithium niobate (LiNbO), and combinations thereof,
Wherein the thermoplastic resin comprises a polyolefin-based resin
Fiber reinforced composites.
The piezoelectric particles are a structure dispersed in the thermoplastic resin
Fiber reinforced composites.
Wherein the thermoplastic resin composition contains 1 to 10 parts by weight of the piezoelectric particles per 100 parts by weight of the thermoplastic resin
Fiber reinforced composites.
Wherein the polyolefin-based resin comprises a polypropylene-based resin,
Wherein the polypropylene resin comprises at least one selected from the group consisting of a polypropylene homopolymer resin, a propylene-ethylene copolymer resin, a propylene-butene copolymer resin, an ethylene-propylene-butene copolymer resin,
Fiber reinforced composites.
Wherein the inorganic fibers include one selected from the group consisting of glass fibers, carbon fibers, and combinations thereof
Fiber reinforced composites.
The average diameter of the cross section of the inorganic fibers is in the range of 15 탆 to 20 탆
Fiber reinforced composites.
The inorganic fibers are contained in a continuous fiber form
Fiber reinforced composites.
Wherein the inorganic fibers have a unidirectional orientation in the fiber-reinforced composite material
Fiber reinforced composites.
Wherein the thermoplastic resin comprises 40 to 70 parts by weight of the inorganic fibers per 100 parts by weight of the thermoplastic resin
Fiber reinforced composites.
The impact strength of the fiber-reinforced composite material is 20 J / mm to 30 J / mm
Fiber reinforced composites.
Mixing inorganic fibers with the thermoplastic resin composition; And
And a step of extruding a thermoplastic resin composition further comprising the inorganic fibers to produce a fiber-reinforced composite material,
The piezoelectric particles have an average diameter of 3 탆 to 10 탆,
Wherein the piezoelectric particles comprise one selected from the group consisting of lead zirconate titanate, lead titanate, lithium niobate (LiNbO), and combinations thereof,
Wherein the thermoplastic resin comprises a polyolefin-based resin
A method for manufacturing a fiber reinforced composite material.
The step of preparing the thermoplastic resin composition is carried out at 180 캜 to 240 캜
A method for manufacturing a fiber reinforced composite material.
The inorganic fibers are mixed with the thermoplastic resin composition so as to have a unidirectional orientation in the fiber-reinforced composite material
A method for manufacturing a fiber reinforced composite material.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150059001A KR101951205B1 (en) | 2015-04-27 | 2015-04-27 | Fiber reinforced composite material and method of manufacturing the same |
| PCT/KR2016/004359 WO2016175538A1 (en) | 2015-04-27 | 2016-04-26 | Fiber-reinforced composite and method for preparing same |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020150059001A KR101951205B1 (en) | 2015-04-27 | 2015-04-27 | Fiber reinforced composite material and method of manufacturing the same |
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| KR20160127884A KR20160127884A (en) | 2016-11-07 |
| KR101951205B1 true KR101951205B1 (en) | 2019-02-25 |
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| CN112280066B (en) * | 2020-10-12 | 2023-02-03 | 衡水瑞纤新材料科技有限公司 | Fiber-reinforced thermoplastic resin composite material with uniform orientation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936370A (en) | 2011-08-15 | 2013-02-20 | 辽宁辽杰科技有限公司 | Continuous fiber reinforced thermoplastic resin prepreg tape and preparation method thereof |
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| US6756429B2 (en) * | 2001-01-04 | 2004-06-29 | Clariant Finance (Bvi) Limited | Method for improving fiber dispersion and orientation in let-downs of long fiber reinforced composites |
| KR20090022835A (en) * | 2007-08-31 | 2009-03-04 | 지에스칼텍스 주식회사 | Long fiber reinforced pellet containing inorganic material and resin article manufactured by using the same |
| KR20130011774A (en) * | 2011-07-22 | 2013-01-30 | (주)삼박 | Resin composition for fiber reinforced composite materials and prepreg therefrom |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936370A (en) | 2011-08-15 | 2013-02-20 | 辽宁辽杰科技有限公司 | Continuous fiber reinforced thermoplastic resin prepreg tape and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| Material letters, 2008, 62권, pp194-197 (2007.05.08.) 1부.* |
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| WO2016175538A1 (en) | 2016-11-03 |
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