KR20230093951A - Composition for hydrogen sensing paste and manufacturing method thereof - Google Patents

Composition for hydrogen sensing paste and manufacturing method thereof Download PDF

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KR20230093951A
KR20230093951A KR1020210183011A KR20210183011A KR20230093951A KR 20230093951 A KR20230093951 A KR 20230093951A KR 1020210183011 A KR1020210183011 A KR 1020210183011A KR 20210183011 A KR20210183011 A KR 20210183011A KR 20230093951 A KR20230093951 A KR 20230093951A
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hydrogen gas
paste composition
parts
weight
sensing
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윤동신
김서영
이경훈
김상민
송희
조일희
어준
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주식회사 유니드
하이리움산업(주)
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Abstract

The present invention relates to a silicone paste composition for sensing hydrogen gas, a manufacturing method thereof, and a hydrogen-gas-detecting silicone sensor (in particular a coating agent) using the same, and in particular provides a silicone paste composition for sensing hydrogen gas, which sets at room temperature and has excellent applicability. The silicone paste composition for sensing hydrogen gas according to the present invention comprises: a hydrogen-gas-sensing agent; cyclopentasiloxane (CPS); silica; hydroxyl terminated polydimethylsiloxanelsiloxane (HTPS); and methyltrimethoxysilane (MTMS).

Description

수소가스 감지용 실리콘 페이스트 조성물 및 그 제조방법{COMPOSITION FOR HYDROGEN SENSING PASTE AND MANUFACTURING METHOD THEREOF}Silicone paste composition for detecting hydrogen gas and method for manufacturing the same

본 발명은 수소가스 감지용 실리콘 페이스트 조성물, 그 제조방법, 그리고 이를 이용한 수소가스 감지 실리콘 감지체(특히 도포제)에 관한 것으로,The present invention relates to a silicone paste composition for detecting hydrogen gas, a manufacturing method thereof, and a silicon sensor (particularly a coating agent) for detecting hydrogen gas using the same,

보다 상세하게는 상온경화형 페이스트 제품으로 구성하여 수소가스 누출 예상 부위에 바른 후 누출여부는 색변화를 통해 육안 확인이 가능하여 현장적용성 및 색변화 시인성이 우수한 수소가스 감지용 실리콘 페이스트 조성물에 관한 것이다.More specifically, it is a silicone paste composition for detecting hydrogen gas that is composed of a room temperature curing paste product and is applied to an area where hydrogen gas is expected to leak, and then whether or not leakage can be visually confirmed through color change, which has excellent field applicability and color change visibility. .

수소 연료 전지 에너지원이나 수소차, 다양한 산업분야에서 사용되는 수소가스를 감지하는 수소센서를 위한 기술로는 특허등록 제10-1734733호(2017년05월02일) [산화몰리브덴 기반 색가변 수소 검출센서 및 그 제조방법]이 있는데, As a technology for a hydrogen sensor that detects hydrogen gas used in hydrogen fuel cell energy sources, hydrogen vehicles, and various industries, Patent Registration No. 10-1734733 (May 2, 2017) [Detection of color changeable hydrogen based on molybdenum oxide] sensor and its manufacturing method],

이 등록특허는 수열합성법을 이용하여 산화몰리브덴(MoO3) 나노 구조체를 합성하고, 그 위에 UV를 조사하여 팔라듐(Pd) 촉매입자를 코팅시켜 제조된 MoO3-Pd 나노 복합체로 이루어진 수소센서용 코팅층을 형성함으로써 수소 노출 전후의 가시적인 색 변화가 뚜렷하여 수소 감지 또는 감도가 우수하며, 장기 안정성이 우수하며, 공정이 단순하고, 제조원가를 낮출 수 있는 색가변 수소 검출센서 및 그 제조방법에 관한 것이다.This registered patent synthesizes a molybdenum oxide (MoO3) nanostructure using a hydrothermal synthesis method, and forms a coating layer for a hydrogen sensor made of a MoO3-Pd nanocomposite prepared by coating palladium (Pd) catalyst particles by irradiating UV thereon. By doing so, the visible color change before and after hydrogen exposure is clear, and the hydrogen detection or sensitivity is excellent, the long-term stability is excellent, the process is simple, and the manufacturing method relates to a color changeable hydrogen detection sensor capable of lowering manufacturing costs.

또 특허등록 제10-1933313호(2018년12월20일) [수소 가스 검출용 센서 및 이의 제조 방법]이 있는데,In addition, there is Patent Registration No. 10-1933313 (December 20, 2018) [Sensor for detecting hydrogen gas and manufacturing method thereof],

이 등록특허는 수소 가스 검출용 센서는 2차원 산화텅스텐과, 2차원 산화텅스텐 표면에 형성된 팔라듐 나노입자로 이루어진 WO3-Pd 복합체를 포함하고, 베이스 기재 상에 형성된 코팅층을 포함한다.In this registered patent, a sensor for detecting hydrogen gas includes a WO3-Pd composite composed of two-dimensional tungsten oxide and palladium nanoparticles formed on the surface of the two-dimensional tungsten oxide, and includes a coating layer formed on a base substrate.

나아가 특허등록 제10-2087113호(2020년03월04일) [수소 감지 복합입자 및 이의 제조방법]이 있는데,Furthermore, there is Patent Registration No. 10-2087113 (March 04, 2020) [Hydrogen Sensing Composite Particles and Manufacturing Method Thereof],

이 등록 특허는 비가역적 변색을 통한 수소 감지가 가능한 복합입자 및 이의 제조방법에 관한 것이다. 더욱 구체적으로 산화아연(ZnO) 나노입자의 표면상에 산화팔라듐(PdO) 입자가 부착된 복합입자 및 이의 제조방법에 관한 것이며, 상기 복합입자를 활용한 수소 감지 센서, 나노섬유, 고분자 필름 및 도료 등의 응용에 관한 것이다.This registered patent relates to composite particles capable of detecting hydrogen through irreversible discoloration and a manufacturing method thereof. More specifically, it relates to composite particles in which palladium oxide (PdO) particles are attached on the surface of zinc oxide (ZnO) nanoparticles and a manufacturing method thereof, and hydrogen detection sensors, nanofibers, polymer films and paints using the composite particles It is about applications such as.

한편 특허등록 제10-1015088호(2011년02월09일) [초 고감도 수소 센서에 사용되는 환원된 PdO 박막과 그것을 제조하기 위한 방법]이 있는데,On the other hand, there is Patent Registration No. 10-1015088 (February 9, 2011) [reduced PDO thin film used in ultra-high-sensitivity hydrogen sensor and method for manufacturing it],

이 등록특허는 리액티브 스퍼터링 기법(reactive DC magnetron sputtering system)을 이용하여 인위적으로 PdO 박막을 제작하는 단계와, 상기 PdO 박막을 환원반응시켜 나노크랙이 형성된 Pd 박막을 얻는 단계를 포함하며, This registered patent includes the steps of artificially producing a PdO thin film using a reactive DC magnetron sputtering system, and obtaining a Pd thin film with nanocracks by reducing the PdO thin film,

상기 나노크랙이 형성된 Pd 박막은 수소검지특성이 향상되어 수소검지 센서에 사용되기 적합한 기술을 제시하고 있다.The Pd thin film in which the nanocrack is formed has improved hydrogen detection characteristics, suggesting a technology suitable for use in a hydrogen detection sensor.

또 특허등록 제10-1269510호(2013년05월24일) [수소 농도 측정이 가능한 수소 감지 센서]가 있는데,In addition, there is a patent registration No. 10-1269510 (May 24, 2013) [Hydrogen detection sensor capable of measuring hydrogen concentration],

이 등록특허는 수소 가스의 농도 변화에 상응하여 저항값이 변함으로써 연속적으로 수소 가스의 농도 변화를 측정할 수 있는 수소 감지 센서에 관한 것으로 This registered patent relates to a hydrogen detection sensor that can continuously measure the change in concentration of hydrogen gas by changing the resistance value corresponding to the change in concentration of hydrogen gas.

구체적으로 수소 가스와 접촉시 수소화되는 수소 감지부를 포함하되, 상기 수소 감지부가 수소화될 때, 상기 수소 감지부의 저항값이 변하고, 수소 가스의 제1농도에서 제1 저항값 변화율을 갖고, 상기 제1 농도와 다른 수소 가스의 제2 농도에서 상기 제1 저항값 변화율과 다른 제2 저항값 변화율을 갖는 것을 특징으로 한다.Specifically, it includes a hydrogen sensing unit that is hydrogenated when in contact with hydrogen gas, when the hydrogen sensing unit is hydrogenated, the resistance value of the hydrogen sensing unit changes, has a first resistance value change rate at a first concentration of hydrogen gas, and the first It is characterized in that it has a second resistance value change rate different from the first resistance value change rate at a second concentration of hydrogen gas different from the concentration.

그러나 이 두 특허를 비롯한 종래문헌은 우수한 현장적용성 부분이나 색변화 시인성을 향상하여 이상 상태를 즉각적으로 감지할 수 있도록 하는 기술, 특히 상온 경화형 기술과는 무관하다.However, the prior art including these two patents has nothing to do with technology that enables immediate detection of an abnormal state by improving field applicability or color change visibility, especially room temperature curing technology.

이에 본 발명은 상온경화형으로 현장적용성 및 색변화 시인성이 우수하여 페이스트 제품으로 구성하여 수소가스 누출 예상 부위에 바른 후 누출여부는 색변화를 통해 육안 확인이 가능하도록 하는 수소가스 감지용 실리콘 페이스트 조성물, 그 제조방법, 그리고 이를 이용한 수소가스 감지 실리콘 감지체(특히 도포제)를 제공하는 것을 목적으로 한다.Therefore, the present invention is a silicone paste composition for detecting hydrogen gas that is cured at room temperature and has excellent field applicability and color change visibility, so that it is composed of a paste product and applied to an area where hydrogen gas is expected to leak, and then the leak can be visually confirmed through color change. , its manufacturing method, and a hydrogen gas sensing silicon sensing body (particularly a coating agent) using the same.

상기와 같은 목적을 달성하기 위하여 본 발명에 따른 수소가스 감지용 실리콘 페이스트 조성물은 In order to achieve the above object, the silicone paste composition for detecting hydrogen gas according to the present invention is

수소가스 감지제, CPS(Cyclopentasiloxane), 실리카, HTPS(Hydroxyl Terminated Polydimethylsiloxanelsiloxane), MTMS(Methyltrimethoxysilane)를 포함하여 이루어진다.It is composed of a hydrogen gas sensing agent, CPS (Cyclopentasiloxane), silica, HTPS (Hydroxyl Terminated Polydimethylsiloxanelsiloxane), and MTMS (Methyltrimethoxysilane).

또 본 발명에 따른 수소가스 감지용 실리콘 페이스트 조성물에서In addition, in the silicone paste composition for detecting hydrogen gas according to the present invention

OMCTS(Octamethyl Cyclotetrasiloxane)를 더 포함하고,Further containing OMCTS (Octamethyl Cyclotetrasiloxane),

VTP(Vinyl Terminated Polydimethylsiloxane)를 더 포함하며,It further includes VTP (Vinyl Terminated Polydimethylsiloxane),

CPS 100 중량부에 대하여, 수소가스 감지제 1~5중량부, 실리카 5~20 중량부, HTPS 60~100 중량부, MTMS 1~5 중량부, OMCTS 0.1~0.5 중량부, VTP 0~10 중량부로 구성되고,Based on 100 parts by weight of CPS, 1 to 5 parts by weight of hydrogen gas detecting agent, 5 to 20 parts by weight of silica, 60 to 100 parts by weight of HTPS, 1 to 5 parts by weight of MTMS, 0.1 to 0.5 parts by weight of OMCTS, 0 to 10 parts by weight of VTP consists of parts,

상기 수소가스 감지제의 담체는 제올라이트, TiO2, SiO2, ZnO, Al2O3 중 일부 또는 모두이고,The carrier of the hydrogen gas sensing agent is some or all of zeolite, TiO 2 , SiO 2 , ZnO, and Al 2 O 3 ,

상온 경화형인 것이 바람직하다.It is preferable that it is room temperature hardening type.

나아가 본 발명은 수소가스 감지용 실리콘 페이스트 조성물의 제조방법 및 이에 따른 수소가스 감지 실리콘 감지체을 제공한다.Furthermore, the present invention provides a method for manufacturing a silicon paste composition for detecting hydrogen gas and a silicon sensor for detecting hydrogen gas according to the method.

본 발명은 현장적용성이 뛰어난 도포제와 같은 수소가스 감지 실리콘 감지체로 활용될 수 있고, 색변화 시인성도 우수한 수소가스 감지용 실리콘 페이스트 조성물과 그 제조방법을 제공할 수 있다.The present invention can be used as a silicon sensor for detecting hydrogen gas, such as a coating agent with excellent field applicability, and can provide a silicone paste composition for detecting hydrogen gas with excellent color change visibility and a manufacturing method thereof.

도 1은 본 발명에 따른 수소가스 감지 실리콘 페이스트의 수소가스 노출 전후 변색 비교사진.1 is a comparison photograph of discoloration of a hydrogen gas sensing silicon paste before and after exposure to hydrogen gas according to the present invention.

이하 본 발명을 상세히 설명하도록 한다. Hereinafter, the present invention will be described in detail.

본 발명은 다양한 변경을 가할 수 있고 여러 가지 형태를 가질 수 있는 바, 구현예(態樣, aspect)(또는 실시예)들을 본문에 상세하게 설명하고자 한다. 그러나 이는 본 발명을 특정한 개시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다. Since the present invention can have various changes and various forms, the implementation examples (or embodiments) will be described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

본 명세서에서 사용한 용어는 단지 특정한 구현예(태양, 態樣, aspect)(또는 실시예)를 설명하기 위해 사용된 것으로, 본 발명을 한정하려는 의도가 아니다. 단수의 표현은 문맥상 명백하게 다르게 뜻하지 않는 한, 복수의 표현을 포함한다. 본 출원에서, ~포함하다~ 또는 ~이루어진다~ 등의 용어는 명세서 상에 기재된 특징, 숫자, 단계, 동작, 구성요소, 부분품 또는 이들을 조합한 것이 존재함을 지정하려는 것이지, 하나 또는 그 이상의 다른 특징들이나 숫자, 단계, 동작, 구성요소, 부분품 또는 이들을 조합한 것들의 존재 또는 부가 가능성을 미리 배제하지 않는 것으로 이해되어야 한다.Terms used in this specification are only used to describe a specific embodiment (aspect, aspect, aspect) (or embodiment), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as ~comprising~ or ~consisting of are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that it does not preclude the possibility of the presence or addition of numbers, steps, operations, components, parts, or combinations thereof.

다르게 정의되지 않는 한, 기술적이거나 과학적인 용어를 포함해서 여기서 사용되는 모든 용어들은 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자에 의해 일반적으로 이해되는 것과 동일한 의미를 가지고 있다. 일반적으로 사용되는 사전에 정의되어 있는 것과 같은 용어들은 관련 기술의 문맥 상 가지는 의미와 일치하는 의미를 가지는 것으로 해석되어야 하며, 본 출원에서 명백하게 정의하지 않는 한, 이상적이거나 과도하게 형식적인 의미로 해석되지 않는다.Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

본 발명에 따른 수소가스 감지용 실리콘 페이스트 조성물, 그 제조방법, 그리고 이를 이용한 수소가스 감지 실리콘 감지체(특히 도포제)는 기본 조성물로 A silicone paste composition for detecting hydrogen gas according to the present invention, a method for manufacturing the same, and a silicon sensor for detecting hydrogen gas using the same (particularly a coating agent) are a basic composition.

수소가스 감지제, CPS(Cyclopentasiloxane), 실리카, HTPS(Hydroxyl Terminated Polydimethylsiloxanelsiloxane), MTMS(Methyltrimethoxysilane)를 포함하여 이루어진다.It is composed of a hydrogen gas sensing agent, CPS (Cyclopentasiloxane), silica, HTPS (Hydroxyl Terminated Polydimethylsiloxanelsiloxane), and MTMS (Methyltrimethoxysilane).

또 OMCTS(Octamethyl Cyclotetrasiloxane) 및 VTP(Vinyl Terminated Polydimethylsiloxane) 중 하나 또는 둘 모두를 포함할 수 있다.It may also include one or both of Octamethyl Cyclotetrasiloxane (OMCTS) and Vinyl Terminated Polydimethylsiloxane (VTP).

구체적으로 CPS 100 중량부에 대하여,Specifically, with respect to 100 parts by weight of CPS,

수소가스 감지제 1~5중량부, 실리카 5~20 중량부, HTPS 60~100 중량부, MTMS 1~5 중량부, OMCTS 0.1~0.5 중량부, VTP 0~10 중량부로 구성되는 것이 바람직하다.It is preferably composed of 1 to 5 parts by weight of hydrogen gas sensing agent, 5 to 20 parts by weight of silica, 60 to 100 parts by weight of HTPS, 1 to 5 parts by weight of MTMS, 0.1 to 0.5 parts by weight of OMCTS, and 0 to 10 parts by weight of VTP.

또 상기 수소가스 감지제의 담체는 제올라이트, TiO2, SiO2, ZnO, Al2O3 중 일부 또는 모두인 것이 좋다.In addition, the carrier of the hydrogen gas sensing agent may be some or all of zeolite, TiO 2 , SiO 2 , ZnO, and Al 2 O 3 .

기초적으로 수소가스 감지제는 PdO(Palladium Oxide)를 사용하는 것이 바람직하다.Basically, it is preferable to use PdO (Palladium Oxide) as the hydrogen gas sensing agent.

또 수소가스 감지제는 조작 용이성, 물질 안정성, 보존성 등을 고려하여 담체에 수용된 것이 바람직하며, 그 담체의 예로는 제올라이트(Zeolite), TiO2, SiO2, ZnO, Al2O3 등의 다공성 물질(이 중 하나, 일부 또는 모두일 수 있다)을 활용할 수 있고, 이중 제올라이트가 적합하다.In addition, the hydrogen gas sensing agent is preferably accommodated in a carrier in consideration of ease of operation, material stability, preservation, etc., examples of the carrier are porous materials such as zeolite, TiO 2 , SiO 2 , ZnO, Al 2 O 3 (which may be one, some or all of these) may be utilized, and dual zeolites are suitable.

즉, PdCl2를 담체인 제올라이트에 혼합하여 담지한다.That is, PdCl 2 is mixed and supported on zeolite as a carrier.

나아가 수소가스 감지 원리는 아래와 같으며, 본 발명에 따른 페이스트를 이용한 수소가스 감지 전후의 변색은 도 1의 비교 사진에서 확인할 수 있다.Furthermore, the principle of detecting hydrogen gas is as follows, and discoloration before and after detecting hydrogen gas using the paste according to the present invention can be confirmed in the comparative photograph of FIG. 1.

PdO (Brown) + H2 → Pd (Gray)+ H2OPdO (Brown) + H 2 → Pd (Gray) + H 2 O

[조성물의 성분에 대한 설명][Description of the components of the composition]

본 발명에 따른 수소가스 감지 실리콘 페이스트 조성물은 수소가스 감지 실리콘 감지체로 활용됨에 있어 다양한 분야에 안정적으로 적용되도록 실리콘 도포제(페이스트)로 사용될 수 있는 형태로 제조되는 것이 바람직하다.The hydrogen gas sensing silicone paste composition according to the present invention is preferably manufactured in a form that can be used as a silicone coating agent (paste) so that it can be stably applied to various fields in being used as a hydrogen gas sensing silicon sensor.

○ 말단 수산기를 갖는 폴리디메틸실록산(Hydroxyl terminated Polydimethylsiloxane('PDMS')(HTPS(Hydroxyl Terminated Polydimethylsiloxanelsiloxane))○ Polydimethylsiloxane having a terminal hydroxyl group (Hydroxyl terminated Polydimethylsiloxane ('PDMS') (HTPS (Hydroxyl Terminated Polydimethylsiloxanelsiloxane))

수산기 특유의 점착 특성을 부여한다(부가경화에 참여하지 않는 -OH를 부여하여 피착물에 대한 점착력을 확보할 수 있다).Gives unique adhesive properties to hydroxyl groups (adhesion to adherends can be secured by adding -OH, which does not participate in additional curing).

○ 사이클로펜타실록산(CPS(Cyclopentasiloxane))○ Cyclopentasiloxane (CPS (Cyclopentasiloxane))

속명(Common Name)이 D5인 휘발성 실리콘 솔벤트로, 본 발명에 따른 페이스트 이용 제품(수소가스 감지 실리콘 감지체 내지 도포제)의 지촉건조시간 및 보관안정성 확보를 위해 첨가한다.A volatile silicone solvent with a common name of D5, which is added to secure the touch-drying time and storage stability of the paste-using product (hydrogen gas sensing silicone sensor or coating agent) according to the present invention.

지촉건조시간은 수소가스 감지 실리콘 감지체 도포 후 접착성은 있으나 (완전 경화는 되지 않았으나) 손가락에는 실리콘이 묻지 않은 상태까지의 시간을 의미한다.The touch drying time means the time from applying the hydrogen gas sensing silicon sensor to a state in which the silicone is not attached to the finger although there is adhesiveness (although it is not completely cured).

○ 실리카○ Silica

실리콘(Silicone) 고분자의 보강제로, 실리콘 고무 합성에 있어서 실리카는 실리콘(생고무 실리콘)이 분자간의 인력이 낮고 비결정 구조를 갖기 때문에 실리콘 순수 폴리머 자체만 경화시켰을 경우 인장강도가 10∼14 kgf/cm2로 매우 낮아 실용성이 떨어지기 문제를 해겨하여, 실리카 첨가시 실리콘 생고무의 인장강도는 40배까지 향상된다.As a reinforcing agent for silicone polymers, in the synthesis of silicone rubber, silica has a low intermolecular attractive force and an amorphous structure. The tensile strength of silicone raw rubber is improved up to 40 times when silica is added, avoiding the problem of low practicality because it is very low.

○ 메틸트리메톡시실란(MTMS(Methyltrimethoxysilane))○ Methyltrimethoxysilane (MTMS (Methyltrimethoxysilane))

상온 경화형 실리콘(RTV Silicone)의 가교제 기능을 한다.Functions as a crosslinking agent for room temperature curing type silicone (RTV Silicone).

○ 옥타메틸사이클로테트라실록산(OMCTS(Octamethyl Cyclotetrasiloxane))○ Octamethyl Cyclotetrasiloxane (OMCTS (Octamethyl Cyclotetrasiloxane))

속명이 D4이며, 휘발성 실리콘으로 D5(사이클로펜타실록산)과 유사한 기능을 한다.Its generic name is D4, and as a volatile silicone, it functions similarly to D5 (cyclopentasiloxane).

○ 말단 비닐기를 갖는 폴리디메틸실록산(VTP(Vinyl Terminated Polydimethylsiloxane))○ Polydimethylsiloxane having a terminal vinyl group (VTP (Vinyl Terminated Polydimethylsiloxane))

실리콘의 기재(Back-bone) 역할을 한다.It serves as the back-bone of silicon.

아울러 수소가스 감지를 위한 필러는 다음과 같다.In addition, the filler for detecting hydrogen gas is as follows.

○ PdO/담체○ PdO/carrier

PdO는 수소가스와 반응하여 변색 특성을 나타내며, 제올라이트, TiO2, SiO2, ZnO, Al2O3는 PdO의 담체 역할을 하며, 제올라이트가 적합하다.PdO reacts with hydrogen gas to exhibit discoloration, and zeolite, TiO 2 , SiO 2 , ZnO, and Al 2 O 3 serve as a carrier for PdO, and zeolite is suitable.

이하 본 발명은 구체 실시예 및 비교예를 통하여 더 잘 이해될 수 있다.Hereinafter, the present invention can be better understood through specific examples and comparative examples.

[실시예 및 비교예][Examples and Comparative Examples]

구 분(단위:중량%)Classification (unit: % by weight) 실시예 ①Example ① 실시예 ②Example ② 실시예 ③Example ③ 실시예 ④Example ④ 비교예①Comparative example ① 비교예②Comparative example ② 비교예③Comparative example ③ 비교예④Comparative example④ SilicaSilica 6.55 6.55 6.55 6.55 6.90 6.90 6.55 6.55 13.113.1 13.813.8 13.113.1 7.30 7.30 HTPSHTPS 38.25 38.25 36.80 36.80 40.25 40.25 40.70 40.70 81.481.4 80.580.5 76.576.5 39.80 39.80 MTMSMTMS 1.20 1.20 1.20 1.20 1.30 1.30 1.20 1.20 2.42.4 2.62.6 2.42.4 1.35 1.35 OMCTSOMCTS 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.20.2 0.20.2 0.20.2 0.10 0.10 VTPVTP 2.45 2.45 3.90 3.90 0.00 0.00 0.00 0.00 0.00.0 0.00.0 4.94.9 0.00 0.00 수소가스 감지제hydrogen gas detection agent 1.45 1.45 1.45 1.45 1.45 1.45 1.45 1.45 2.92.9 2.92.9 2.92.9 1.45 1.45 CPSCPS 50.00 50.00 50.00 50.00 50.00 50.00 50.00 50.00 0.00.0 0.00.0 0.00.0 50.00 50.00 수소가스 감지제 담체Hydrogen gas detection agent carrier 제올라이트zeolite 제올라이트zeolite 제올라이트zeolite 제올라이트zeolite 제올라이트zeolite 제올라이트zeolite 제올라이트zeolite 제올라이트zeolite

*HTPS = Hydroxyl Terminated Polydimethylsiloxane*HTPS = Hydroxyl Terminated Polydimethylsiloxane

*MTMS = Methyltrimethoxysilane*MTMS = Methyltrimethoxysilane

*OMCTS = Octamethyl Cyclotetrasiloxane*OMCTS = Octamethyl Cyclotetrasiloxane

*VTP = Vinyl Terminated Polydimethylsiloxane*VTP = Vinyl Terminated Polydimethylsiloxane

*CPS = Cyclopentasiloxane*CPS = Cyclopentasiloxane

[제조예 : 수소가스 감지 실리콘 페이스트(도포제)를 제조하기 위한 전체 조성물 제조][Production Example: Preparation of entire composition for producing hydrogen gas sensing silicone paste (coating agent)]

○ 수소가스 감지제 제조○ Manufacture of hydrogen gas detection agent

1. Substrate(담체)(제올라이트(Zeolite), TiO2, SiO2 또는 ZnO)와 함께 PdCl2 및 물(H2O)을 혼합하여 제조한다.1. It is prepared by mixing PdCl 2 and water (H 2 O) with a substrate (Zeolite, TiO 2, SiO 2 or ZnO).

PdCl2는 담체 대비 2~4 phr로 투입한다. PdCl 2 is added at 2 to 4 phr compared to the carrier.

2. 10분간 교반하며, 반응온도는 상온(RT)~60 ℃이다.2. Stir for 10 minutes, and the reaction temperature is room temperature (RT) ~ 60 ℃.

3. pH Control; 묽은 염산을 이용하여 용액의 pH를 7로 조절한다.3. pH Control; Adjust the pH of the solution to 7 with dilute hydrochloric acid.

4. 60분간 교반하며, 반응온도는 상온~60 ℃이다.4. Stir for 60 minutes, the reaction temperature is room temperature ~ 60 ℃.

5. 필터를 이용하여 가압 필터링 한다.(0.2 ㎛ Membrane filter with washing).5. Filter under pressure using a filter (0.2 ㎛ Membrane filter with washing).

6. 12시간 동안 건조하여(건조온도: 120 ℃) PdO/담체 분말 수득한다.6. Drying for 12 hours (drying temperature: 120° C.) to obtain PdO/carrier powder.

○ 밀링(Three Roll Milling)○ Milling (Three Roll Milling)

상기 혼합된 조성물 내 존재하는 입자(필러)들을 분쇄/분산하는 공정으로,In the process of pulverizing / dispersing the particles (fillers) present in the mixed composition,

수소가스 감지제와 레진이 투입되는 롤의 갭을 20 ㎛, 토출되는 롤의 갭을 5 ㎛로 하여 밀링한다.Milling is performed by setting the gap between the rolls into which the hydrogen gas sensing agent and the resin are injected to 20 μm and the gap between the rolls through which the resin is discharged to 5 μm.

○ 포장○ packaging

상온경화형이므로 기밀성이 확보된 용기에 담고 진공 포장한다.Since it is a room temperature curing type, it is placed in an airtight container and vacuum packed.

○ 혼합(Planetary Mixing)○ Planetary Mixing

상기 분산된 레진을 나머지 원료에 혼합하는 공정으로 A process of mixing the dispersed resin with the rest of the raw materials

실시예 및 비교예별 조성물을 믹서(Planetary Mixer) 장비를 이용하여 혼합하는데,The compositions of Examples and Comparative Examples are mixed using a planetary mixer equipment,

공전 블레이드 기준 5 rpm으로 설정(자전 블레이드 10 rpm)하여 10분간 혼합한다.Set to 5 rpm based on the revolving blade (rotating blade 10 rpm) and mix for 10 minutes.

[실시예 및 비교예의 지촉전조시간 및 보관 안정성 비교][Comparison of texture development time and storage stability of Examples and Comparative Examples]

구 분division 실시예 ①Example ① 실시예 ②Example ② 실시예 ③Example ③ 실시예 ④Example ④ 비교예①Comparative example ① 비교예②Comparative example ② 비교예③Comparative example ③ 비교예④Comparative example④ 지촉전조시간 (분)Tactile Tactile Time (minutes) 6060 7070 5050 4545 1010 1515 2020 9090 포장후상온보관안정성 Room temperature storage stability after packaging 3개월 이상more than 3 months 3개월 이상more than 3 months 3개월 이상more than 3 months 3개월 이상more than 3 months 48시간 48 hours 48시간 48 hours 48시간 48 hours 48시간48 hours

수소가스 감지용 실리콘 페이스트 조성물은 보관안정성까지 고려시 지촉건조시간은 45~90분 범위내에 있어야 하는데, 본 발명에 따른 실시예는 이를 충족하는 것으로 확인되었다.The silicone paste composition for detecting hydrogen gas should have a touch drying time in the range of 45 to 90 minutes when considering storage stability, and it was confirmed that the embodiment according to the present invention satisfies this.

○ 적용(도포제의 경우)○ Application (in case of coating agent)

상기 제조된 수소가스 감지 페이스트는 상온경화형 타입으로 누출 예상 부위에 바른 후 수소가스 누출 여부 확인할 수 있다.The prepared hydrogen gas detection paste is a room temperature curing type, and it is possible to check whether hydrogen gas is leaked after applying it to an area where leakage is expected.

도 1은 본 발명의 실시예1에 따른 실리콘 페이스트 조성물의 수소가스 노출 전후 변색 사진 ( Brown -> Gray)으로, 1 is a discoloration photograph (Brown -> Gray) before and after hydrogen gas exposure of a silicone paste composition according to Example 1 of the present invention,

수소가스 노출 조건으로 4 % H2 가스에 1 mL/min의 유량으로 5분간 노출한 변색 사진이며, 뚜렷하게 변색 여부를 육안으로 확인할 수 있는 상태이다.It is a discoloration photograph exposed to 4% H 2 gas at a flow rate of 1 mL/min for 5 minutes under hydrogen gas exposure conditions, and it is a state in which the discoloration can be clearly checked with the naked eye.

이상의 설명에서 수소가스 감지용 실리콘 페이스트 조성물, 그 제조방법, 그리고 이를 이용한 수소가스 감지 실리콘 감지체(특히 도포제)와 관련한 통상의 공지된 기술은 생략되어 있으나, 당업자라면 용이하게 이를 추측 및 추론하고 재현할 수 있다.In the above description, the conventionally known technology related to the silicone paste composition for detecting hydrogen gas, its manufacturing method, and the silicon sensor for detecting hydrogen gas using the same (particularly the coating agent) is omitted, but those skilled in the art can easily guess, infer, and reproduce it. can do.

Claims (8)

수소가스 감지제, CPS(Cyclopentasiloxane), 실리카, HTPS(Hydroxyl Terminated Polydimethylsiloxanelsiloxane), MTMS(Methyltrimethoxysilane)를 포함하여 이루어진 수소가스 감지용 실리콘 페이스트 조성물.A silicone paste composition for detecting hydrogen gas comprising a hydrogen gas detecting agent, Cyclopentasiloxane (CPS), silica, Hydroxyl Terminated Polydimethylsiloxanelsiloxane (HTPS), and Methyltrimethoxysilane (MTMS). 제 1 항에 있어서,
OMCTS(Octamethyl Cyclotetrasiloxane)를 더 포함하는 것을 특징으로 하는 수소가스 감지용 실리콘 페이스트 조성물.
According to claim 1,
Silicone paste composition for detecting hydrogen gas, characterized in that it further comprises OMCTS (Octamethyl Cyclotetrasiloxane).
제 1 항 또는 제 2 항에 있어서,
VTP(Vinyl Terminated Polydimethylsiloxane)를 더 포함하는 것을 특징으로 하는 수소가스 감지용 실리콘 페이스트 조성물.
According to claim 1 or 2,
Silicone paste composition for detecting hydrogen gas, characterized in that it further comprises VTP (Vinyl Terminated Polydimethylsiloxane).
제 3 항에 있어서,
CPS 100 중량부에 대하여,
수소가스 감지제 1~5중량부, 실리카 5~20 중량부, HTPS 60~100 중량부, MTMS 1~5 중량부, OMCTS 0.1~0.5 중량부, VTP 0~10 중량부로 구성된 것을 특징으로 하는 수소가스 감지용 실리콘 페이스트 조성물.
According to claim 3,
With respect to 100 parts by weight of CPS,
1 to 5 parts by weight of hydrogen gas sensing agent, 5 to 20 parts by weight of silica, 60 to 100 parts by weight of HTPS, 1 to 5 parts by weight of MTMS, 0.1 to 0.5 parts by weight of OMCTS, and 0 to 10 parts by weight of VTP Hydrogen, characterized in that A silicone paste composition for gas sensing.
제 1 항 또는 제 2 항에 있어서,
상기 수소가스 감지제의 담체는 제올라이트, TiO2, SiO2, ZnO, Al2O3 중 일부 또는 모두인 것을 특징으로 하는 수소가스 감지용 실리콘 페이스트 조성물.
According to claim 1 or 2,
The carrier of the hydrogen gas sensing agent is a silicone paste composition for sensing hydrogen gas, characterized in that some or all of zeolite, TiO 2 , SiO 2 , ZnO, Al 2 O 3 .
제 1 항 또는 제 2 항에 있어서,
상온 경화형인 것을 특징으로 하는 수소가스 감지용 실리콘 페이스트 조성물.
According to claim 1 or 2,
A silicone paste composition for detecting hydrogen gas, characterized in that it is cured at room temperature.
청구항 1 내지 청구항 6 중 어느 한 항에 따른 조성물의 제조방법.A method for producing a composition according to any one of claims 1 to 6. 청구항 1 내지 청구항 6 중 어느 한 항에 따른 수소가스 감지 실리콘 감지체.A hydrogen gas sensing silicon detector according to any one of claims 1 to 6.
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