KR100570030B1 - Method for forming inner board of vehicle - Google Patents

Method for forming inner board of vehicle Download PDF

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Publication number
KR100570030B1
KR100570030B1 KR1020030073295A KR20030073295A KR100570030B1 KR 100570030 B1 KR100570030 B1 KR 100570030B1 KR 1020030073295 A KR1020030073295 A KR 1020030073295A KR 20030073295 A KR20030073295 A KR 20030073295A KR 100570030 B1 KR100570030 B1 KR 100570030B1
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South Korea
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polypropylene
weight
stone
air layer
molding
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KR1020030073295A
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Korean (ko)
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KR20050038091A (en
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이진형
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기아자동차주식회사
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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
    • C08K3/34—Silicon-containing compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

본 발명은 자동차의 내장재 성형용 소재에 관한 것으로서, 더욱 상세하게는 폴리프로필렌에을 주성분으로 하고, 여기에 공기층을 형성하는 돌가루를 함유시켜, 주성분인 폴리프로필렌이 돌가루의 공기층으로 녹아 들어 큰 결속력과 경량화에 유리한 저비중의 내장재를 제조할 수 있도록 한 자동차의 내장재 성형용 소재에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material for forming interior materials of automobiles. More specifically, polypropylene is a main component, and it contains stone powder to form an air layer, and polypropylene as a main component melts into the air layer of stone and has a large binding force. The present invention relates to a material for molding an interior material of a vehicle, which enables to manufacture a low specific gravity interior material, which is advantageous for weight reduction.

이를 위해, 본 발명은 자동차용 내장재 성형용 소재에 있어서, 폴리프로필렌 70중량%, 돌가루 25중량%, 탈크 5중량%를 혼합하여, 상기 돌가루가 가지는 공기층으로 폴리프로필렌이 녹아 들 수 있도록 한 것을 특징으로 하는 자동차용 내장재 성형용 소재를 제공한다.To this end, the present invention is a material for molding automotive interior materials, by mixing 70% by weight of polypropylene, 25% by weight of crumbs, 5% by weight of talc, so that the polypropylene can melt into the air layer of the stone It provides a material for molding a car interior material, characterized in that.

자동차용 내장재 성형용 소재, 폴리프로필렌, 돌가루, 현무암Materials for molding automotive interior materials, polypropylene, stone, basalt

Description

자동차의 내장재 성형용 소재{Method for forming inner board of vehicle}Material for forming interior materials of automobiles {Method for forming inner board of vehicle}

본 발명은 자동차의 내장재 성형용 소재에 관한 것으로서, 더욱 상세하게는 폴리프로필렌에을 주성분으로 하고, 여기에 공기층을 형성하는 돌가루를 함유시켜, 주성분인 폴리프로필렌이 돌가루의 공기층으로 녹아 들어 큰 결속력과 경량화에 유리한 저비중의 내장재를 제조할 수 있도록 한 자동차의 내장재 성형용 소재에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material for forming interior materials of automobiles. More specifically, polypropylene is a main component, and it contains stone powder to form an air layer. The present invention relates to a material for molding an interior material of a vehicle, which enables to manufacture a low specific gravity interior material, which is advantageous for weight reduction.

통상적으로 자동차용 내장재 성형을 위한 소재는 폴리프로필렌을 주성분으로 하여, 여기에 폴리에스터 등을 혼합하여 사용하고 있다.Usually, the raw material for automobile interior molding is made of polypropylene as a main component, and polyester and the like are mixed and used therein.

국내특허 공개번호 1999-0016438(1999.03.05)에는 자동차용 폴리프로필렌 보드에 대한 기술이 공개되어 있는 바, 폴리프로필렌 70중량%와 폴리에스터 30중량%로 이루어진 강화 보드에 관한 기술이 공개되어 있다.
예를 들면, 마의 재질을 갖고 있는 폐포대 및 마 스크랩 50중량%와 폐섬유 상태의 폴리프로필렌 50중량%를 가지고 절단기에서 소정의 규격으로 절단한 후, 타면기에서 화이버 상태로 만든 다음, 첫번째 공정의 카드기에서 일정하게 섬유를 걸러내어 성형기로 뿌려준 후, 표피작업을 70%의 폴리프로필렌과 30%의 폴리에스터로 두번째 공정의 카드기에서 일정하게 섬유로 걸러내어 성형기로 뿌려준 다음, 니들펀칭기로 결합하여 시트 상태로 만든 후, 시트화 된 제품을 열프레스 압착판으로 약 200℃의 열로 가열하여 녹인 다음, 냉각프레스로 성형하는 방법으로 강화 보드를 제조하는 기술이 공개되어 있다. Korean Patent Publication No. 1999-0016438 (1999.03.05) discloses a technique for a polypropylene board for automobiles, and discloses a technique for reinforcing boards composed of 70 wt% polypropylene and 30 wt% polyester.
For example, with a velvety bag and 50% by weight scrap of hemp and 50% by weight of polypropylene in the form of waste fiber, the cutter is cut to a prescribed size and made into a fiber state on the other side machine, and then After filtering the fibers regularly from the carding machine and sprinkling them with a molding machine, the cuticle work is regularly filtered with 70% polypropylene and 30% polyester from the carding machine of the second process and sprinkled with a molding machine, and then combined with a needle punching machine. After the sheet is made into a sheet state, a method of manufacturing a reinforcing board by a method of forming a sheet product by heating it with a heat press crimping plate to a temperature of about 200 ° C., and then forming a cold press is disclosed.

한편, 자동차의 내장재를 위한 소재로서, 폴리프로필렌에 목분을 혼합하여 사용하는 경우도 있다.On the other hand, as a material for interior materials of automobiles, wood powder may be mixed with polypropylene in some cases.

이와 같이, 기존의 자동차 내장재를 성형하기 위한 소재는 폴리프로필렌 보 드 소재로서, 중량이 무거워서 경량화를 고려하면 성형깊이가 깊은 부품에 적용하기에는 적합하지 않은 단점이 있고, 또한 성형 작업시 폴리프로필렌 보드는 심한 악취를 발생시키는 단점이 있다.As such, the conventional material for molding automotive interior materials is a polypropylene board material, which is not suitable for application to parts with a deep molding depth in consideration of light weight due to its heavy weight. It has the disadvantage of causing severe odor.

또한, 목분이 함유된 폴리프로필렌 보드는 비중이 높아 무게가 많이 나가는 동시에 인장강도 및 굴곡강도가 낮은 단점이 있다.In addition, the polypropylene board containing the wood powder has a disadvantage of high weight and high tensile strength and bending strength at the same time.

본 발명은 상기와 같은 단점을 감안하여 연구 개발된 것으로서, 폴리프로필렌을 주성분으로 하고, 여기에 현무암과 같이 공기층을 갖는 돌가루를 함유시켜, 돌가루의 공기층을 폴리프로필렌이 녹아 들어 냉각과 함께 큰 결속력을 갖도록 함으로써, 기존의 폴리프로필렌 보드에 비하여 경량화에 유리하고, 인장강도 및 굴곡강도를 향상시킬 수 있도록 한 자동차의 내장재 성형용 소재를 제공하는데 그 목적이 있다.
The present invention has been researched and developed in view of the above drawbacks, the main component of polypropylene, and contains a stone powder having an air layer, such as basalt, polypropylene melts the air layer of stone powder with cooling It is an object of the present invention to provide a material for forming interior materials of automobiles, which is advantageous in weight reduction and improves tensile strength and flexural strength, compared to conventional polypropylene boards.

상기한 목적을 달성하기 위한 본 발명은:The present invention for achieving the above object is:

자동차용 내장재 성형용 소재에 있어서, 폴리프로필렌 70중량%, 돌가루 25중량%, 탈크 5중량%를 혼합하여, 상기 돌가루가 가지는 공기층으로 폴리프로필렌이 녹아 들 수 있도록 한 것을 특징으로 하는 자동차용 내장재 성형용 소재를 제공한다.In the automotive interior molding material, 70% by weight of polypropylene, 25% by weight of powdered stone, 5% by weight of talc is mixed, so that the polypropylene can be melted into the air layer of the stone powder It provides a material for forming the interior materials.

바람직한 구현예로서, 상기 돌가루는 1mm 직경으로 현무암을 그라인딩시킨 것임을 특징으로 한다.In a preferred embodiment, the stone is characterized in that the basalt is ground to a diameter of 1mm.

이하, 본 발명을 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail.

본 발명에 따른 내장재 성형용 소재는 상술한 바와 같이, 폴리프로필렌 70중량%, 돌가루 25중량%, 탈크 5중량%로 이루어진 것으로서, 기존과 같이 폴리프로필렌을 주성분으로 하는 내장재 보드를 제조할 수 있도록 한 것이다.
즉, 기존의 폴리프로필렌을 주성분으로 한 내장재 보드를 제조하는 통상의 공정을 이용하여 본 발명의 내장재 보드를 제조할 수 있다.
예를 들면, 폴리프로필렌, 돌가루 및 탈크가 혼합된 소재를 시트 상태로 만든 후, 이렇게 시트화 된 제품을 열프레스 압착판으로 약 200℃의 열로 가열하여 녹인 다음, 냉각프레스로 성형하는 방법으로 내장재 보드를 제조할 수 있다.
이때, 시트화 된 제품을 열프레스 압착판으로 가열하여 녹이게 되면, 이때의 열과 압력에 의해 폴리프로필렌이 녹으면서 돌가루가 가지는 공기층으로 녹아들어갈 수 있게 된다. As described above, the material for forming the interior material according to the present invention is composed of 70% by weight of polypropylene, 25% by weight of powder, 5% by weight of talc, and as described above, so that the interior board based on polypropylene can be manufactured. It is.
That is, the interior material board of this invention can be manufactured using the conventional process of manufacturing the interior material board which has the existing polypropylene as a main component.
For example, after a polypropylene, stone and talc mixed material is made into a sheet state, the sheeted product is melted by heating with a heat press plate at a temperature of about 200 ° C., and then molded into a cold press. Interior boards can be manufactured.
In this case, when the sheeted product is heated and melted by a hot press pressing plate, the polypropylene is melted by the heat and pressure at this time, and the melted powder can be melted into the air layer.

상기 돌가루는 폴리프로필렌이 녹아 들 수 있는 공기층을 갖는 것으로서, 돌가루의 성분비가 25%를 초과하면 소재의 비중이 높어져 경량화에 실효성을 거두지못하고, 돌가루의 성분지가 25% 이하이면 폴리프로필렌의 주특성이 너무 강해져서 신율이 커지고 굴곡탄성이 너무 낮아져 성형 후 강성에 의해 부러지거나 열변형의 가능성이 높어진다.The stone powder has an air layer in which polypropylene can be melted. If the component ratio of the stone powder exceeds 25%, the specific gravity of the material is high, and thus the weight loss is not effective. The main characteristic of is so strong that the elongation is increased and the flexural elasticity is so low that it is broken by stiffness after molding and the possibility of thermal deformation increases.

따라서, 상기 돌가루의 성분을 25중량%로 첨가하는 것이 바람직하고, 공기층 형성에 유리한 현무암을 사용하는 것이 좋다.Therefore, it is preferable to add the component of the said stone powder at 25 weight%, and it is preferable to use basalt which is favorable for air layer formation.

특히, 돌가루의 크기는 1mm 직경 내외의 것을 적용하는 것이 바람직한데, 그 이유는 성형원단을 보통 시트상태(두께 5mm 내외)로 만들어 사용하는 바, 돌가루의 공기층으로 폴리프로필렌이 스며드는 정도가 너무 크면 결속력이 좋아지는 반면에 중량이 너무 높게 되고, 또한 돌가루의 공기층으로 폴리프로필렌이 스며드는 정도가 너무 작으면 결속력이 떨어져 강성이 약하고 변형이 일어나기 때문이다.In particular, the size of the stone powder is preferably applied to the diameter of about 1mm, the reason is that the forming fabric is usually used to make the sheet state (about 5mm thickness), so that the degree of polypropylene penetrates into the air layer of the stone powder If it is large, the binding force is good, but the weight is too high. Also, if the degree of polypropylene seeping into the air layer of the stone is too small, the binding force is weak and the rigidity is deformed.

다른 구현예로서, 상기 돌기루 대신 공기층을 갖는 무기질 재료를 사용하여도 무방하다.In another embodiment, an inorganic material having an air layer may be used instead of the protrusion.

이하, 본 발명을 실시예에 의하여 더욱 상세히 설명하고자 한다.Hereinafter, the present invention will be described in more detail with reference to Examples.

하기의 실시예는 오로지 본 발명을 보다 구체적으로 설명하기 위한 것으로, 이들 실시예에 의하여 본 발명의 범위가 한정되지 않는다는 것은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어서 자명할 것이다.The following examples are only for illustrating the present invention in more detail, it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples.

실시예 1 내지 3 및 시험예Examples 1 to 3 and test examples

본 발명에 따른 실시예 1은 폴리프로필렌 70중량%, 돌가루 25중량%, 탈크 5중량%가 혼합된 소재를 사용하여 시트상태로 제조하되, 상기 돌가루가 가지는 공기층으로 폴리프로필렌이 녹아 들도록 제조하였다.Example 1 according to the present invention is prepared in a sheet state using a material mixed with 70% by weight of polypropylene, 25% by weight of powder, 5% by weight of talc, the polypropylene is melted into the air layer of the stone It was.

실시예 2는 폴리프로필렌 75중량%, 돌가루 20중량%, 탈크 5중량%가 혼합된 소재를 사용하여 시트상태로 제조하되, 상기 돌가루가 가지는 공기층으로 폴리프로필렌이 녹아 들도록 제조하였다.Example 2 was prepared in the form of a sheet using a material mixed with 75% by weight of polypropylene, 20% by weight of stone, 5% by weight of talc, but was prepared to melt the polypropylene into the air layer of the stone.

실시예 3은 폴리프로필렌 65중량%, 돌가루 30중량%, 탈크 5중량%가 혼합된 소재를 사용하여 시트상태로 제조하되, 상기 돌가루가 가지는 공기층으로 폴리프로필렌이 녹아 들도록 제조하였다.Example 3 was prepared in a sheet state using a mixture of 65% by weight of polypropylene, 30% by weight of powdered stone, 5% by weight of talc, but was prepared to melt polypropylene into the air layer of the stone.

이렇게 제조된 시트를 통상의 장비를 이용하여 비중, 신율, 인장강도, 굴곡강도, 굴곡탄성 등을 측정하였고, 그 결과는 하기의 표 1에 나타낸 바와 같다.Thus prepared sheet was measured using a conventional equipment, specific gravity, elongation, tensile strength, flexural strength, flexural elasticity, and the like, the results are shown in Table 1 below.

비교예 및 시험예Comparative Example and Test Example

비교예로서, 폴리프로필렌 50중량%, 목분 50중량%로 이루어진 종래의 폴리프로필렌 보드를 제조하여, 실시예와 같이 통상의 장비를 이용하여 비중, 신율, 인장강도, 굴곡강도, 굴곡탄성 등을 측정하였고, 그 결과는 하기의 표 1에 나타낸 바와 같다.As a comparative example, a conventional polypropylene board made of 50% by weight of polypropylene and 50% by weight of wood powder was prepared, and specific gravity, elongation, tensile strength, flexural strength, flexural elasticity, etc. were measured using conventional equipment as in the examples. The results are shown in Table 1 below.

Figure 112003039141982-pat00001
Figure 112003039141982-pat00001

위의 표 1에서 보는 바와 같이, 폴리프로필렌 70중량%, 돌가루 25중량%, 탈크 5중량%가 혼합된 소재를 사용하여 시트상태로 제조한 실시예 1이 저비중이면서도 인장강도 및 굴곡강도가 우수한 것으로 판명되었고, 따라서 자동차용 내장재를 제조하는데 유용하게 사용될 수 있음을 알 수 있었다.As shown in Table 1, Example 1 manufactured in a sheet state using a material in which 70% by weight of polypropylene, 25% by weight of powdered stone and 5% by weight of talc is mixed, has a low specific gravity and tensile strength and flexural strength. It turned out to be excellent, and thus it can be seen that it can be usefully used to manufacture automotive interior materials.

이상에서 본 바와 같이, 본 발명에 따른 자동차용 내장재 성형용 소재에 의하면, 폴리프로필렌 70중량%, 돌가루 25중량%, 탈크 5중량%를 혼합하여, 내장재 성형시 상기 돌가루가 가지는 공기층으로 폴리프로필렌이 녹아 들 수 있도록 함으로써, 경량화에 유리한 저비중이면서도 인장강도 및 굴곡강도가 우수한 내장재를 제조할 수 있는 장점을 제공한다. As described above, according to the automotive interior material forming material according to the present invention, by mixing 70% by weight of polypropylene, 25% by weight of stone, 5% by weight of talc, the poly-air layer having the air in forming the interior material By allowing propylene to melt, it provides an advantage of producing a low specific gravity and excellent tensile strength and flexural strength for light weight.                     

또한, 성형 작업시 본 발명의 소재에서는 탄화로 인한 냄새 억제가 가능하고, 완제품에서도 냄새를 최소화시킬 수 있다.In addition, in the molding operation of the present invention it is possible to suppress the odor due to carbonization, it is possible to minimize the smell in the finished product.

Claims (2)

자동차용 내장재 성형용 소재에 있어서, In the automotive interior material molding material, 폴리프로필렌 70중량%, 돌가루 25중량%, 탈크 5중량%를 혼합하여, 상기 돌가루가 가지는 공기층으로 폴리프로필렌이 녹아 들 수 있도록 한 자동차용 내장재 성형용 소재.A material for forming automotive interior materials by mixing 70% by weight of polypropylene, 25% by weight of stone powder, and 5% by weight of talc to allow polypropylene to melt into the air layer of the stone powder. 청구항 1에 있어서, 상기 돌가루는 1mm 직경으로 현무암을 그라인딩시킨 것임을 특징으로 하는 자동차용 내장재 성형용 소재.The material for forming a car interior material according to claim 1, wherein the stone powder is obtained by grinding basalt with a diameter of 1 mm.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101144111B1 (en) 2009-12-02 2012-07-09 현대자동차주식회사 Polypropylene complex resin composition implementing the outward fiber-appearance

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101144111B1 (en) 2009-12-02 2012-07-09 현대자동차주식회사 Polypropylene complex resin composition implementing the outward fiber-appearance
US8367753B2 (en) 2009-12-02 2013-02-05 Hyundai Motor Company Polypropylene resin composition for creating fabric texture

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