KR101648868B1 - Pressure-sensitive adhesive composition for light shielding tape having improved light-blocking and electric insulation property - Google Patents

Pressure-sensitive adhesive composition for light shielding tape having improved light-blocking and electric insulation property Download PDF

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KR101648868B1
KR101648868B1 KR1020140043676A KR20140043676A KR101648868B1 KR 101648868 B1 KR101648868 B1 KR 101648868B1 KR 1020140043676 A KR1020140043676 A KR 1020140043676A KR 20140043676 A KR20140043676 A KR 20140043676A KR 101648868 B1 KR101648868 B1 KR 101648868B1
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pressure
sensitive adhesive
light
shielding
silica beads
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KR20150118255A (en
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고세윤
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주식회사 켐코
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/04Non-macromolecular additives inorganic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • C08K3/36Silica
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00Use of ingredients characterised by shape
    • C08K7/16Solid spheres
    • C08K7/18Solid spheres inorganic
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04Homopolymers or copolymers of esters
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00Adhesives in the form of films or foils
    • C09J7/30Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38Pressure-sensitive adhesives [PSA]
    • C09J7/381Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385Acrylic polymers
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J9/00Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks

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  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Inorganic Chemistry (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

본 발명은 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물에 관한 것으로, 더욱 상세하게는 점착제, 카본블랙 및 실리카 비드로 이루어져 디스플레이 기기에 적합한 차광성 및 절연성을 나타내는 차광테이프용 감압성 점착제 조성물에 관한 것이다.
상기의 성분으로 이루어지는 차광테이프용 감압성 점착제 조성물은 카본블랙이 함유되어 차광효과뿐만 아니라, 전기분산 효과를 통해 절연성을 나타내며, 실리카 비드가 함유되어 전류이동 거리를 향상시키고 전류를 가두는 효과로 인해 탁월한 절연성을 나타낸다.
The present invention relates to a pressure-sensitive adhesive composition for a light-shielding tape having improved light-shielding properties and insulating properties, and more particularly to a pressure-sensitive adhesive composition for a light-shielding tape comprising a pressure-sensitive adhesive, carbon black and silica beads, ≪ / RTI >
The pressure-sensitive adhesive composition for a light-shielding tape comprising the above-described components contains carbon black to exhibit insulating properties through not only a light shielding effect but also an electric dispersion effect. Because of the effect that silica beads are contained, And exhibits excellent insulating properties.

Description

차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물 {PRESSURE-SENSITIVE ADHESIVE COMPOSITION FOR LIGHT SHIELDING TAPE HAVING IMPROVED LIGHT-BLOCKING AND ELECTRIC INSULATION PROPERTY}TECHNICAL FIELD [0001] The present invention relates to a pressure-sensitive adhesive composition for a light-shielding tape having improved light-shielding properties and insulating properties. BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

본 발명은 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물에 관한 것으로, 더욱 상세하게는 카본블랙이 함유되어 차광효과뿐만 아니라, 전기분산 효과를 통해 절연성을 나타내며, 실리카 비드가 함유되어 전류이동 거리를 향상시키고 전류를 가두는 효과로 인해 탁월한 절연성을 나타내는 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물에 관한 것이다.
The present invention relates to a pressure-sensitive adhesive composition for a light-shielding tape having improved light-shielding properties and insulating properties. More particularly, the present invention relates to a pressure-sensitive adhesive composition for light- Sensitive adhesive composition for light-shielding tapes having improved light-shielding properties and insulating properties, which exhibit excellent insulating properties due to the effect of improving the movement distance and blocking currents.

본 발명은 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물에 관한 것으로, 더욱 상세하게는 카본블랙이 함유되어 차광효과뿐만 아니라, 전기분산 효과를 통해 절연성을 나타내며, 실리카 비드가 함유되어 전류이동 거리를 향상시키고 전류를 가두는 효과로 인해 탁월한 절연성을 나타내는 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물에 관한 것이다.The present invention relates to a pressure-sensitive adhesive composition for a light-shielding tape having improved light-shielding properties and insulating properties. More particularly, the present invention relates to a pressure-sensitive adhesive composition for light- Sensitive adhesive composition for light-shielding tapes having improved light-shielding properties and insulating properties, which exhibit excellent insulating properties due to the effect of improving the movement distance and blocking currents.

점착제 및 점착테이프를 구성하는 산업용 점착제로는 다양한 종류가 사용되고 있는데, 일반적으로 사용되는 점착제의 종류로는 핫멜트용 점착제, 실리콘계 점착제, 러버계 점착제 및 아크릴계 점착제가 있다.Various types of industrial adhesives constituting the pressure-sensitive adhesive and the pressure-sensitive adhesive tape have been used. Examples of the pressure-sensitive adhesive commonly used include hot-melt pressure-sensitive adhesives, silicone pressure-sensitive adhesives, rubber pressure-sensitive adhesives and acrylic pressure-sensitive adhesives.

그 중에서도, 아크릴계 점착제는 탄소수가 1 내지 17인 곁사슬(side chain)을 가지고 있어 가공이 용이하기 때문에, 최근 다양한 산업에 널리 이용되고 있으며, 벌크(bulk)중합, 용액(solution)중합, 현탁(suspension)중합 및 에멀젼(emulsion)중합 등으로 제조될 수 있다.Among them, acrylic pressure sensitive adhesives are widely used in various industries in recent years because they have a side chain having 1 to 17 carbon atoms and are easy to process. They are widely used for bulk polymerization, solution polymerization, suspension ) Polymerization and emulsion polymerization.

또한, 디스플레이에 적용되는 차광테이프용 감압성 점착제는 -30 내지 -20℃의 온도에서도 그 성능을 발현되야 하므로, -55 내지 -10℃에서 최적을 물성치를 가질 수 있도록 유리전이온도(Tg)가 -70 내지 -10℃의 구간에 해당하는 단량체를 주성분으로 하여 제조되고 있다.Further, the pressure-sensitive adhesive for a light-shielding tape to be applied to a display must exhibit its performance even at a temperature of -30 to -20 占 폚, so that a glass transition temperature (Tg) And a monomer corresponding to the range of -70 to -10 캜 as a main component.

일반적으로 디스플레이용 차광 테이프는 PET를 기재로 하거나 내충격 방지용으로 FOAM을 PET와 합지하여 기재로 사용하는데, 차광성을 확보하기 위해 PET면에 블랙인쇄를 하거나 점착제(PSA)에 카본블랙(Carbon black)을 혼합하며, 또는 이 두 가지의 방법을 혼용하여 사용하는데, 점착제에 카본블랙을 과량 혼합하는 경우에는 점착제의 점착력이 저하되며, 카본블랙에 함유된 흑연성분이 도전성을 나타내기 때문에 과전하가 발생하여 디스플레이 기기의 오작동을 발생시키는 문제점이 있었다.
In general, the shielding tape for display is made of PET as a base material or as a base material in which FOAM is laminated with PET in order to prevent impact resistance. In order to secure light shielding, black printing is performed on the PET surface or carbon black is applied to the pressure- When the carbon black is excessively mixed with the pressure-sensitive adhesive, the adhesive strength of the pressure-sensitive adhesive is lowered. Since the graphite component contained in the carbon black exhibits conductivity, overcharge occurs Thereby causing malfunction of the display device.

본 발명의 목적은 카본블랙이 함유되어 우수한 차광효과를 나타내며, 실리카 비드가 함유되어 전류이동 거리를 향상시키고 전류를 가두는 효과로 인해 탁월한 절연성을 나타내는 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물을 제공하는 것이다.
An object of the present invention is to provide a light-shielding and light-shielding tape for a light-shielding tape which exhibits excellent light-shielding effect by containing carbon black and which exhibits excellent insulating property due to the effect of improving the current- To provide a pressure-sensitive adhesive composition.

본 발명의 목적은 점착제, 카본블랙 및 실리카 비드로 이루어지는 것을 특징으로 하는 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물을 제공함에 의해 달성된다.An object of the present invention is achieved by providing a pressure-sensitive adhesive composition for a light-shielding tape having improved light-shielding and insulating properties, which comprises a pressure-sensitive adhesive, carbon black and silica beads.

본 발명의 바람직한 특징에 따르면, 상기 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물은 점착제 100 중량부, 카본블랙 3 내지 10 중량부 및 실리카 비드 10 내지 20 중량부로 이루어지는 것으로 한다.According to a preferred aspect of the present invention, the pressure-sensitive adhesive composition for a light-shielding tape having improved light-shielding properties and insulating properties comprises 100 parts by weight of a pressure-sensitive adhesive, 3 to 10 parts by weight of carbon black and 10 to 20 parts by weight of silica beads.

본 발명의 더 바람직한 특징에 따르면, 상기 점착제는 아크릴계 점착제인 것으로 한다.According to a further preferred feature of the present invention, the pressure-sensitive adhesive is an acrylic pressure-sensitive adhesive.

본 발명의 더욱 바람직한 특징에 따르면, 상기 실리카 비드는 다공성 실리카 비드 5 내지 10 중량부 및 중공형 실리카 비드 5 내지 10 중량부로 이루어지는 것으로 한다.According to a further preferred feature of the present invention, the silica beads are composed of 5 to 10 parts by weight of the porous silica beads and 5 to 10 parts by weight of the hollow silica beads.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 실리카 비드는 입자크기가 1 내지 10 마이크로미터인 것으로 한다.
According to an even more preferred feature of the present invention, the silica bead has a particle size of 1 to 10 micrometers.

본 발명에 따른 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물은 적정량의 카본블랙이 함유되어 우수한 차광효과를 나타내며, 실리카 비드가 함유되어 전류이동 거리를 향상시키고 전류를 가두는 효과로 인해 탁월한 절연성을 나타내기 때문에, 차광성 및 절연성이 개선된 차광테이프를 제공한다.
The pressure-sensitive adhesive composition for a light-shielding tape having improved light-shielding properties and insulating properties according to the present invention contains an appropriate amount of carbon black and exhibits excellent shading effect. Due to the effect of incorporating silica beads, Provided is a light-shielding tape having improved light-shielding properties and insulating properties because it exhibits excellent insulating properties.

도 1은 본 발명에 따른 카본블랙이 3 내지 10 중량부 함유된 점착제를 통과하는 전류의 모습을 나타낸 계략도이다.
도 2는 본 발명에 따른 다공성 실리카 비드가 함유된 점착제를 통과하는 전류의 모습을 나타낸 계략도이다.
도 3은 본 발명에 따른 중공형 실리카 비드가 함유된 점착제를 통과하는 전류의 모습을 나타낸 계략도이다.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a current passing through a pressure-sensitive adhesive containing 3 to 10 parts by weight of carbon black according to the present invention. FIG.
2 is a schematic view showing a state of a current passing through a pressure-sensitive adhesive containing porous silica beads according to the present invention.
FIG. 3 is a schematic view showing a current passing through a pressure-sensitive adhesive containing hollow silica beads according to the present invention.

이하에는, 본 발명의 바람직한 실시예와 각 성분의 물성을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.
Hereinafter, preferred embodiments of the present invention and physical properties of the respective components will be described in detail with reference to the accompanying drawings. However, the present invention is not limited thereto, And this does not mean that the technical idea and scope of the present invention are limited.

본 발명에 따른 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물은 점착제, 카본블랙 및 실리카 비드로 이루어지며, 점착제 100 중량부, 카본블랙 3 내지 10 중량부 및 실리카 비드 10 내지 20 중량부로 이루어지는 것이 더욱 바람직하다.
The pressure-sensitive adhesive composition for a light-shielding tape with improved light-shielding and insulating properties according to the present invention is composed of a pressure-sensitive adhesive, carbon black and silica beads, and comprises 100 parts by weight of an adhesive, 3 to 10 parts by weight of carbon black and 10 to 20 parts by weight of silica beads .

상기 점착제는 100 중량부가 첨가되며, 본 발명에 따른 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물에 주재료로 사용되어 점착성을 부여하는 역할을 한다.100 parts by weight of the pressure-sensitive adhesive is added, and is used as a main ingredient in the pressure-sensitive pressure-sensitive adhesive composition for a light-shielding tape having improved light-shielding properties and insulation according to the present invention.

상기 점착제의 종류는 특별히 한정되지 않고, 점착성이 우수하며, 디스플레이용 차광테이프에 적용가능한 것이면 어떠한 것이든 사용가능하나 핫멜트용 점착제, 실리콘계 점착제, 러버계 점착제 및 아크릴계 점착제를 사용하는 것이 바람직하다.The kind of the pressure-sensitive adhesive is not particularly limited and any adhesive may be used as long as it is applicable to a display light-shielding tape. However, it is preferable to use a pressure-sensitive adhesive for hot-melt, a silicone pressure-sensitive adhesive, a rubber pressure-sensitive adhesive and an acrylic pressure-sensitive adhesive.

특히, 내구성, 내열성, 점착력, 투명성 및 내화학성이 우수한 아크릴계 점착제를 사용하는 것이 더욱 바람직한데, 아크릴계 점착제는 탄소수가 1 내지 17인 곁사슬(side chain)을 가지고 있어 가공이 용이한 장점을 나타낸다.Particularly, it is more preferable to use an acrylic pressure-sensitive adhesive excellent in durability, heat resistance, adhesive strength, transparency and chemical resistance. The acrylic pressure-sensitive adhesive has a side chain having 1 to 17 carbon atoms and thus has an advantage of easy processing.

또한, 상기 아크릴계 점착제는 -30 내지 -20℃의 온도에서도 그 성능을 발현되야 하므로, -55 내지 -10℃에서 최적을 물성치를 가질 수 있도록 유리전이온도(Tg)가 -70 내지 -10℃의 구간에 해당하는 n-부틸아크릴레이트 또는 부틸아크릴레이트 등의 단량체를 주성분으로 하여 제조하는 것이 바람직하다.
The acrylic pressure-sensitive adhesive should exhibit its performance even at a temperature of -30 to -20 占 폚. Therefore, it is preferable that the acrylic pressure-sensitive adhesive has a glass transition temperature (Tg) of -70 to -10 占 폚 Butyl acrylate or butyl acrylate as a main component.

상기 카본블랙은 3 내지 10 중량부가 함유되며, 본 발명에 따른 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물의 차광성을 향상시키는 역할을 한다.The carbon black is contained in an amount of 3 to 10 parts by weight and serves to improve the light shielding property of the pressure-sensitive adhesive composition for a light-shielding tape having improved light-shielding properties and insulation according to the present invention.

카본블랙은 탄소를 원료로 한 흑색 안료로써, 탄소를 함유하고 있는 화합물을 산소가 불충분한 상태에서 연소 또는 열분해하여 얻어지며 1 내지 500마이크로미터의 입자크기를 갖기 때문에 크기는 흑연과 비슷하며, 일반적으로 잉크 등의 흑색 안료로 사용되며, 그 종류에 따라서는 섬유에 전도성을 부여하는 첨가제 또는 도전성 고무 등을 제작하는데 주로 사용된다.Carbon black is a black pigment made from carbon, which is obtained by burning or pyrolysis of a compound containing carbon in an oxygen-deficient state and has a particle size of 1 to 500 micrometers, so that its size is similar to that of graphite, Is used as a black pigment such as ink, and depending on the kind thereof, it is mainly used for producing an additive for imparting conductivity to fibers or conductive rubber.

카본블랙의 함량이 3 내지 10 중량부인 경우에는 본 발명에 따른 차광테이프용 감압성 점착제의 전류흐름성을 산란시켜 절연성능이 향상되는데, 더욱 상세하게 설명하면 카본블랙은 일정량의 흑연(Graphite) 성분이 함유되어 있기 때문에, 흑연성분이 도체의 역할을 하여 전기를 잘 흘려보내는데, 상기와 같이 카본블랙이 3 내지 10 중량부로 함유되면, 전기를 분산시키는 효과를 나타내어 절연성이 향상된다.When the content of the carbon black is 3 to 10 parts by weight, the insulation property is improved by scattering the current flowability of the pressure-sensitive adhesive for a light-shielding tape according to the present invention. More specifically, the carbon black has a certain amount of graphite The graphite component acts as a conductor and flows well. When the carbon black is contained in an amount of 3 to 10 parts by weight as described above, the electrical conductivity is dispersed and the insulating property is improved.

카본블랙이 3 내지 10 중량부 함유된 점착제를 통과하는 전류의 모습을 아래 도 1에 나타내었다.A current passing through a pressure-sensitive adhesive containing 3 to 10 parts by weight of carbon black is shown in FIG.

상기 카본블랙의 함량이 3 중량부 미만인 경우에는 차광성의 향상효과가 미미할 뿐만 아니라, 카본블랙이 갖는 육각형의 탄소 그물층이 3 내지 5겹으로 적층되어 사슬 모양으로 연결된 구조를 갖기 때문에, 전기적으로 도전성을 나타내어 외부의 전기적 충격에 대해 효율적인 차단이 이루어지지 못하고 전기적 통로로 작용하여 LCD나 LED와 같은 디스플레이의 색상구현 층을 파괴 혹은 오작동을 유발하는 원이이 되며, 카본 블랙의 함량이 10 중량부를 초과하는 경우에는 본 발명에 따른 차광테이프용 감압성 점착제 조성물의 점착성능을 저하시킨다.When the content of the carbon black is less than 3 parts by weight, the effect of improving the light shielding property is not only insignificant, but also because the hexagonal carbon network layers of the carbon black have a structure in which the carbon black layers are stacked in three to five layers and connected in a chain, It is not effective to interrupt the external electric shock and acts as an electrical path to cause destruction or malfunction of a color reproduction layer of a display such as an LCD or an LED. When the content of carbon black exceeds 10 parts by weight , The adhesive performance of the pressure-sensitive adhesive composition for a light-shielding tape according to the present invention is deteriorated.

상기의 카본블랙의 구조를 아래에 나타내었다.The structure of the above carbon black is shown below.

Figure 112014034885603-pat00001

Figure 112014034885603-pat00001

상기 실리카 비드는 10 내지 20 중량부가 함유되며, 다공성 실리카 비드 5 내지 10 중량부 및 중공형 실리카 비드 5 내지 10 중량부로 이루어지는데, 상기 다공성 실리카 비드는 상기 점착제에 첨가되어, 점착제를 통과하는 전류의 이동거리를 늘려줌으로써 절연성을 향상시키며, 상기 점착제에 0.1 내지 30 중량부가 분산될 수 있으나, 5 내지 10 중량부가 함유될 때, 가장 우수한 절연효과를 나타내었다.Wherein the silica beads are contained in an amount of 10 to 20 parts by weight and are composed of 5 to 10 parts by weight of porous silica beads and 5 to 10 parts by weight of hollow silica beads and the porous silica beads are added to the pressure- The insulating property can be improved by increasing the moving distance, and 0.1 to 30 parts by weight of the adhesive can be dispersed in the adhesive, but when it contains 5 to 10 parts by weight, the most excellent insulating effect is exhibited.

더욱 상세하게 설명하면, 다공성 실리카 비드가 함유된 점착제는 전류의 이동거리가 늘어남으로써 절연성이 향상되는데, 종래에 점착제는 전류가 최단거리로 통과하여 대전이 되었던 반면, 절연체의 역할을 하는 다공성 실라카 비드가 첨가됨으로 인해 점착제를 통고하는 전류의 이동거리를 늘어나며, 이로 인해 절연성이 향상되게 된다.More specifically, the pressure sensitive adhesive containing porous silica beads has improved insulating properties by increasing the travel distance of electric current. In the past, the pressure sensitive adhesive has passed through the shortest distance to be charged, while the porous silica particles As the beads are added, the moving distance of the current notifying the adhesive is increased, thereby improving the insulating property.

다공성 실리카 비드가 함유된 점착제를 통과하는 전류의 모습을 아래 도 2에 나타내었다.The shape of the current passing through the pressure-sensitive adhesive containing porous silica beads is shown in FIG. 2 below.

또한, 상기 중공형 실리카 비드는 상기 점착제에 첨가되어, 상기 점착제로 전달된 전류를 중공형 실리카 비드에 형성된 공극에 가두어 절연성을 향상시키는 역할을 하는데, 상기 점착제에 0.1 내지 30 중량부가 분산될 수 있으나, 5 내지 10 중량부가 함유될 때, 가장 우수한 절연효과를 나타내었다.The hollow silica beads are added to the pressure-sensitive adhesive, and the current transferred to the pressure-sensitive adhesive is confined in the voids formed in the hollow silica beads to improve the insulation. The pressure-sensitive adhesive may be dispersed in an amount of 0.1 to 30 parts by weight , And 5 to 10 parts by weight, respectively.

더욱 상세하게 설명하면, 중공형 실리카 비드가 함유되지 않은 종래에 점착제는 전류가 최단거리로 통과하여 대전이 되었던 반면, 절연체의 역할을 하는 중공형 실리카 비드가 첨가된 점착제는 실리카 비드에 형성된 공극 사이에 전류가 가둬지게 되어 절연효과를 나타내었다. More specifically, in the conventional pressure-sensitive adhesive containing no hollow silica beads, the electric current was passed through the shortest distance to be charged, while the pressure-sensitive adhesive to which the hollow silica beads serving as an insulator was added, So that the insulating effect was exhibited.

중공형 실리카 비드가 함유된 점착제를 통과하는 전류의 모습을 아래 도 3에 나타내었다.The shape of the current passing through the pressure-sensitive adhesive containing the hollow silica beads is shown in Fig.

또한, 상기 실리카 비드는 상기 점착제에 고르게 분산되어 균일한 물성을 나타내는 차광테이프용 감압성 점착제 조성물로 제조되기 위해, 입자크기가 1 내지 10 마이크로미터를 나타내는 것을 사용하는 것이 바람직한데, 실리카 비드의 입자크기가 1 마이크로미터 미만이면, 쉽게 비산되어 작업성이 저하되며, 실리카 비드의 입자크기가 10 마이크로미터를 초과하게 되면, 실리카 비드가 쉽게 뭉쳐져서 상기 점착제에 고르게 분산되지 못한다.
The silica beads are preferably dispersed evenly in the pressure-sensitive adhesive so that the pressure-sensitive adhesive composition for a light-shielding tape exhibits uniform physical properties. Therefore, it is preferable to use a silica bead having a particle size of 1 to 10 micrometers. When the size of the silica beads is less than 1 micrometer, the silica beads easily scatter and degrade the workability. When the particle size of the silica beads exceeds 10 micrometers, the silica beads easily aggregate and are not uniformly dispersed in the adhesive.

따라서, 본 발명에 따른 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물은 적정량의 카본블랙이 함유되어 우수한 차광효과와 절연성능을 나타내며, 실리카 비드가 함유되어 전류이동 거리를 향상시키고 전류를 가두는 효과로 인해 탁월한 절연성을 나타내기 때문에, 차광성 및 절연성이 개선된 차광테이프를 제공한다.Accordingly, the pressure-sensitive adhesive composition for a light-shielding tape having improved light-shielding properties and insulation according to the present invention contains an appropriate amount of carbon black to exhibit excellent light-shielding effect and insulation performance, and silica beads are included to improve the current- Provided is a light-shielding tape improved in light-shielding property and insulating property because it exhibits excellent insulating property due to the effect of a wall.

Claims (5)

점착제 100 중량부, 카본블랙 3 내지 10 중량부 및 실리카 비드 10 내지 20 중량부로 이루어지며,
상기 점착제는 아크릴계 점착제이며,
상기 실리카 비드는 다공성 실리카 비드 5 내지 10 중량부 및 중공형 실리카 비드 5 내지 10 중량부로 이루어지고,
상기 실리카 비드는 입자크기가 1 내지 10 마이크로미터인 것을 특징으로 하는 차광성 및 절연성이 개선된 차광테이프용 감압성 점착제 조성물.
100 parts by weight of a pressure-sensitive adhesive, 3 to 10 parts by weight of carbon black and 10 to 20 parts by weight of silica beads,
The pressure-sensitive adhesive is an acrylic pressure-
Wherein the silica beads comprise 5 to 10 parts by weight of porous silica beads and 5 to 10 parts by weight of hollow silica beads,
Wherein the silica beads have a particle size of 1 to 10 micrometers. The pressure-sensitive adhesive composition for light-shielding tapes according to claim 1, wherein the silica beads have a particle size of 1 to 10 micrometers.
삭제delete 삭제delete 삭제delete 삭제delete
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JP2004331728A (en) * 2003-05-01 2004-11-25 Nippon Steel Chem Co Ltd Adhesive film for covering electronic component
JP2011128598A (en) 2009-11-20 2011-06-30 Sumitomo Metal Mining Co Ltd Black heat-resistant light-blocking film, method for producing the same, and aperture stop, light quantity adjusting module and heat-resistant light-blocking tape each using the black heat-resistant light-blocking film
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JP2004331728A (en) * 2003-05-01 2004-11-25 Nippon Steel Chem Co Ltd Adhesive film for covering electronic component
JP2011128598A (en) 2009-11-20 2011-06-30 Sumitomo Metal Mining Co Ltd Black heat-resistant light-blocking film, method for producing the same, and aperture stop, light quantity adjusting module and heat-resistant light-blocking tape each using the black heat-resistant light-blocking film
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