KR20100043722A - Polyprophylene resin composition having improved discoloration-resistance and antibiosis - Google Patents
Polyprophylene resin composition having improved discoloration-resistance and antibiosis Download PDFInfo
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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
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/005—Stabilisers against oxidation, heat, light, ozone
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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
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0083—Nucleating agents promoting the crystallisation of the polymer matrix
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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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
- C08K5/3477—Six-membered rings
- C08K5/3492—Triazines
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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
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
Abstract
Description
본 발명은 내변색성 및 항균성이 우수한 폴리프로필렌 수지 조성물에 관한 것으로, 보다 상세하게는 결정성을 가지는 아이소택틱 폴리프로필렌 단독 중합체에 항균제로서 은-담지 제올라이트의 무기 항균제와 내후안정제 및 핵제 등을 첨가하여 내변색성 및 항균성, 내열성이 동시에 향상시킨 폴리프로필렌 수지 조성물에 관한 것이다.The present invention relates to a polypropylene resin composition having excellent discoloration resistance and antimicrobial properties, and more particularly, to an isotactic polypropylene homopolymer having crystallinity, an inorganic antimicrobial agent of a silver-supported zeolite, a weather stabilizer, a nucleating agent, and the like. It is related with the polypropylene resin composition which added and improved discoloration resistance, antibacterial property, and heat resistance simultaneously.
폴리프로필렌 수지는 우수한 가공특성, 내약품성, 내후성, 고유동성 등의 특성으로 인하여, 사출성형품, 필름 또는 블로우 성형품의 형태로 주로 자동차, 전기부품 등의 분야에 폭넓게 사용되고 있는 범용 플라스틱의 일종이다. 특히 내화학성 및 내약품성이 등이 우수하여 주방 용품 및 욕실용품 등 일상 생활 용품으로 널리 사용되어지고 있다. 그러나 우리의 생활 환경에는 많은 종류의 박테리아(Bacteria), 이스트(Yeast) 및 사상균(Mold)이 존재하며, 이들 미생물들은 그 환 경 조건이 이들의 서식에 적합하면 빠른 속도로 증식하기 때문에 사람의 위생과 직접적으로 관련이 있고, 특히 피부와 직접 접촉하는 생활용품들은 다양한 편의성과 더불어 항균력을 부여함으로써 위생성을 만족시키려는 요구가 커지고 있다.Polypropylene resin is a kind of general-purpose plastic widely used in the fields of automobiles, electrical parts, etc. mainly in the form of injection molded products, films, or blow molded products due to excellent processing characteristics, chemical resistance, weather resistance, high flowability, and the like. In particular, because of excellent chemical resistance and chemical resistance, it is widely used as daily necessities such as kitchen appliances and bathroom appliances. But in our living environment there are many kinds of bacteria (Bacteria), yeast and filamentous fungi, and these microorganisms grow rapidly because their environment conditions are suitable for their habitat. There is an increasing demand for satisfying hygiene by providing antibacterial activity with various conveniences, in particular, household products which are directly related to the skin.
폴리프로필렌의 항균성을 향상시키기 위한 방법으로는 무기항균제를 폴리프로필렌과 혼련하여 수지 조성물의 항균성을 증가시키는 방법이 알려져 있다. 항균 폴리프로필렌과 관련하여 폴리프로필렌에 고밀도폴리에틸렌 및 무기항균제를 블렌딩한 브로우 성형용 항균수지의 조성물이 공개된 바 있으나 이러한 무기 향균제는 내열성 및 내수성 등이 취약하여 성형품 가공 즉시 또는 실 사용 중에 쉽게 변색이 되는 문제점이 있었다.As a method for improving the antimicrobial properties of polypropylene, a method of increasing the antimicrobial activity of a resin composition by kneading an inorganic antimicrobial agent with polypropylene is known. In connection with the antimicrobial polypropylene, a composition of a brow molding antimicrobial resin blended with high density polyethylene and an inorganic antimicrobial agent has been disclosed. However, such an inorganic antimicrobial agent has a weak heat resistance and water resistance, and thus discoloration is easily processed during molding or during actual use. There was a problem.
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 기존 폴리프로필렌의 장점인 내약품성, 내화학성을 유지하면서도 내 변색성 및 항균성을 동시에 부여하여 음식용기용 등 일상 생활용품으로 적합한 폴리프로필렌 수지 조성물을 제공하는 것을 그 목적으로 한다.The present invention is to solve the problems as described above, while maintaining the chemical resistance, chemical resistance of the existing polypropylene at the same time giving a discoloration resistance and antimicrobial at the same time to produce a polypropylene resin composition suitable for daily necessities such as food containers Its purpose is to provide.
본 발명은 상기의 목적을 달성하기 위한 것으로, 폴리프로필렌 수지 조성물에 있어서, 상기 폴리프로필렌은 용융지수는 1~50g/10분의 프로필렌 단독중합체이며, 은성분을 함유한 항균제, UV 안정제 및 핵제(nucleating agent)를 포함하는 것을 특징으로 하는 내변색성 및 항균성이 우수한 폴리프로필렌 수지 조성물을 제공한다.The present invention is to achieve the above object, in the polypropylene resin composition, the polypropylene is a propylene homopolymer having a melt index of 1 ~ 50g / 10 minutes, containing a silver component antibacterial agent, UV stabilizer and nucleating agent ( It provides a polypropylene resin composition excellent in discoloration resistance and antibacterial, characterized in that it comprises a nucleating agent).
또한, 상기 은성분을 함유한 항균제로서 은(Ag) 담지 제올라이트 항균제를 전체 조성물에 대하여 0.001 ~ 5.0 중량% 포함하는 것을 특징으로 한다.In addition, the antimicrobial agent containing the silver component is characterized in that it comprises a silver (Ag) supported zeolite antimicrobial agent 0.001 to 5.0% by weight based on the total composition.
또한, 상기 은(Ag) 담지 제올라이트는 은 함량이 3% 이상인 것을 특징으로 한다.In addition, the silver (Ag) supported zeolite is characterized in that the silver content is 3% or more.
또한, 상기 은(Ag) 담지 제올라이트는 평균 입도가 1 ~ 5㎛인 것을 특징으로 한다.In addition, the silver (Ag) supported zeolite is characterized in that the average particle size of 1 ~ 5㎛.
또한, 상기 UV 안정제는 2-(2'-hydroxy-3'-tert-butyl-5-methylphenyl)-5- chloro-benzotriazole, bis-(2,2,6,6-tetramethyl-4-piperidinyl)sebacate, 2-Hydroxy-4-n-octylocy benzophenone, poly-{[(6-(1,1,3,3-tetramethylbutyl)-imino]-1,3,5-triazino-2,2-diyl][2-(2,2,6,6-tetramethylpiperidyl)-amino]-hexamethylene-[4-(2,2,6,6-tetra methylpiperidyl)-imino]}, poly[(6-morpholino-s-triazine-2,4-diyl)[2,2,6,6-tetramethyl-4-piperidyl)imino]-hexane[(2,2,6,6-tetramethyl-4-piperidyl)imino]] 중 선택되는 하나 또는 둘이상의 혼합물인 것을 특징으로 한다.In addition, the UV stabilizers 2- (2'-hydroxy-3'-tert-butyl-5-methylphenyl) -5-chloro-benzotriazole, bis- (2,2,6,6-tetramethyl-4-piperidinyl) sebacate , 2-Hydroxy-4-n-octylocy benzophenone, poly-{[(6- (1,1,3,3-tetramethylbutyl) -imino] -1,3,5-triazino-2,2-diyl] [2 -(2,2,6,6-tetramethylpiperidyl) -amino] -hexamethylene- [4- (2,2,6,6-tetra methylpiperidyl) -imino]}, poly [(6-morpholino-s-triazine-2 , 4-diyl) [2,2,6,6-tetramethyl-4-piperidyl) imino] -hexane [(2,2,6,6-tetramethyl-4-piperidyl) imino]] or two or more selected from It is characterized by a mixture.
또한, 상기 UV 안정제를 전체 조성물에 대하여 0.01 ~ 5.0 중량% 포함하는 것을 특징으로 한다.In addition, the UV stabilizer is characterized in that it comprises 0.01 to 5.0% by weight based on the total composition.
또한, 상기 핵제는 솔비톨계 화합물인 것을 특징으로 한다.In addition, the nucleating agent is characterized in that the sorbitol compound.
또한, 상기 핵제를 전체 조성물에 대하여 0.01 ~ 5.0 중량% 포함하는 것을 특징으로 한다.In addition, the nucleating agent is characterized in that it comprises 0.01 to 5.0% by weight based on the total composition.
본 발명에 의하면, 폴리프로필렌의 내약품성, 내화학성을 유지하면서, 내변색성 및 항균성이 뛰어난 폴리프로필렌 수지 조성물을 제공하여 음식용기용 등 일상 생활용품으로 폭넓게 적용될 수 있다.According to the present invention, the polypropylene resin composition having excellent discoloration resistance and antibacterial property can be widely applied to daily life products such as food containers while maintaining chemical resistance and chemical resistance of polypropylene.
본 발명의 수지 조성물은 결정성을 가지는 아이소택틱 폴리프로필렌 단독중 합체, 은성분을 함유한 항균제, 내후성이 우수한 UV 안정제, 및 내열성을 위한 핵제를 포함하고 있다.The resin composition of the present invention contains an isotactic polypropylene homopolymer having crystallinity, an antimicrobial agent containing a silver component, a UV stabilizer excellent in weather resistance, and a nucleating agent for heat resistance.
본 발명에서 사용되는 폴리프로필렌 수지는 프로필렌 단독중합체로서 사용한다.The polypropylene resin used in the present invention is used as the propylene homopolymer.
본 발명의 폴리프로필렌 수지의 용융지수는 1~50g/10분의 것을 사용하며, 폴리프로필렌 수지의 용융지수가 1g/10분 미만인 경우에는 부품의 성형성이 양호하지 못하여 성형불량을 초래할 수 있는 반면, 50g/10분을 초과하는 경우에는 충격강도가 급격히 저하되어 일정수준의 내충격성이 요구되는 생활용품 사용조건에 부적합하다. 본 발명에서는 폴리프로필렌 수지를 전체 조성물에 대하여 85 ~ 99 중량%를 사용하는데, 85 중량%미만으로 사용하는 경우 수지 본래의 기계적인 물성의 저하를 가져오므로 바람직하지 못하며, 99 중량%를 초과하면 상기 항균제, UV안정제, 핵제들이 골고루 분산하기 여려워 바람직하지 못하다.The melt index of the polypropylene resin of the present invention is used from 1 to 50g / 10 minutes, when the melt index of the polypropylene resin is less than 1g / 10 minutes, the moldability of the parts may not be good, which may lead to molding failure In the case of more than 50g / 10 minutes, the impact strength is sharply lowered, which is not suitable for the use condition of household goods requiring a certain level of impact resistance. In the present invention, the polypropylene resin is used 85 to 99% by weight based on the total composition, when using less than 85% by weight is not preferable because it leads to a reduction in the original mechanical properties of the resin, if it exceeds 99% by weight The antimicrobial agents, UV stabilizers, nucleating agents are not preferable because they are difficult to distribute evenly.
본 발명에서는 항균제로 은(Ag) 성분을 함유한 향균제를 사용하며, 구체적으로는 은(Ag) 이온을 다공성 제올라이트에 담지한 무기계 항균제를 사용한다. In the present invention, an antibacterial agent containing a silver (Ag) component is used as an antimicrobial agent. Specifically, an inorganic antimicrobial agent supporting silver (Ag) ions on a porous zeolite is used.
상기 무기 항균제로 사용되는 은-담지 제올라이트의 평균입경은 1~5㎛, 바람직하게는 2~4㎛인 것이 바람직하다. 평균입경이 1㎛ 미만인 경우에는 혼합과정에서 미세분말과 같이 날리게 되어 적정함량 조절 및 분산성이 문제될 수 있으며 5㎛을 초과하는 경우에는 제품의 외관상태에 영향을 줄 수 있으므로 바람직하지 못하다.The average particle diameter of the silver-supported zeolite used as the inorganic antimicrobial agent is preferably 1 to 5 µm, preferably 2 to 4 µm. If the average particle diameter is less than 1㎛ it will be blown like fine powder in the mixing process may be a problem of proper content control and dispersibility, and if it exceeds 5㎛ it is not preferable because it may affect the appearance state of the product.
또한, 은-담지 제올라이트의 은 함량은 적어도 3 중량% 이상이어야 하며, 은 함량이 그보다 적으면 항균 효과가 미흡하다.In addition, the silver content of the silver-supported zeolite should be at least 3% by weight or more, and the silver content is less than that, the antibacterial effect is insufficient.
본 발명에 사용된 은-담지 제올라이트의 급성 경구독성은 LD50 ≥5000mg/kg 이상인 것이 사용자의 안전 측면에서 바람직하며, 폴리프로필렌 100중량부에 대하여 0.001 ~ 5.0중량부 포함하는데, 0.001중량부 미만인 경우에는 항균효과가 미비하여 바람직하지 못하고, 5.0중량부를 초과하는 경우에는 원가상승으로 인하여 상업성이 결여되고 물성저하를 초래 할 수 있으므로 바람직하지 못하다.The acute oral toxicity of the silver-supported zeolite used in the present invention is preferably LD50 ≥5000 mg / kg or more from the viewpoint of the user's safety, and includes 0.001 to 5.0 parts by weight based on 100 parts by weight of polypropylene, but less than 0.001 parts by weight. The antimicrobial effect is not preferable, and if it exceeds 5.0 parts by weight, it is not preferable because of lack of commerciality due to the cost increase and may cause a decrease in physical properties.
폴리프로필렌의 내후성향상을 위하여 사용되는 UV 안정제로는, 2-(2'-hydroxy-3'-tert-butyl-5-methylphenyl)-5-chloro-benzotriazole로 대표되는 벤조트리아졸계, bis-(2,2,6,6-tetramethyl-4-piperidinyl)sebacate로 대표되는 세바케이트계, 2-Hydroxy-4-n-octylocy benzophenone으로 대표되는 벤조페논계, poly-{[(6-(1,1,3,3-tetramethylbutyl)-imino]-1,3,5-triazino-2,2-diyl][2-(2,2,6,6-tetramethylpiperidyl)-amino]-hexamethylene-[4-(2,2,6,6-tetra methylpiperidyl)-imino]}, poly[(6-morpholino-s-triazine-2,4-diyl)[2,2,6,6-tetramethylUV stabilizers used to improve the weatherability of polypropylene include benzotriazole, bis- (2) represented by 2- (2'-hydroxy-3'-tert-butyl-5-methylphenyl) -5-chloro-benzotriazole. Sebacate type represented by 2,6,6-tetramethyl-4-piperidinyl) sebacate, Benzophenone type represented by 2-Hydroxy-4-n-octylocy benzophenone, poly-{[(6- (1,1, 3,3-tetramethylbutyl) -imino] -1,3,5-triazino-2,2-diyl] [2- (2,2,6,6-tetramethylpiperidyl) -amino] -hexamethylene- [4- (2, 2,6,6-tetra methylpiperidyl) -imino]}, poly [(6-morpholino-s-triazine-2,4-diyl) [2,2,6,6-tetramethyl
-4-piperidyl)imino]-hexane[(2,2,6,6-tetramethyl-4-piperidyl)imino]]등을 사용할 수 있다.-4-piperidyl) imino] -hexane [(2,2,6,6-tetramethyl-4-piperidyl) imino]] may be used.
UV안정제의 함량은 전체 조성물에 대하여 0.01~5.0 중량%가 바람직하다. UV안정제의 함량이 0.01 중량% 미만일 때에는 고분자의 산화방지 효과가 부족하여 내 후성 개선 효과가 없으며, 5.0 중량%를 초과할 때에는 원가 상승으로 인하여 상업성이 결여되고, 물성저하를 초래할 수 있다.The amount of UV stabilizer is preferably 0.01 to 5.0% by weight based on the total composition. When the amount of UV stabilizer is less than 0.01% by weight, the anti-oxidation effect of the polymer is insufficient to improve weather resistance, and when it exceeds 5.0 by weight, it may lack commerciality due to the cost increase and may cause property deterioration.
본 발명에서 사용되는 핵제는 폴리프로필렌의 결정화시 결정화도를 향상시켜 폴리 프로필렌의 내열성 및 결정화온도, 강성 등 제반 물성을 향상시키기 위한 핵제로서, 구체적으로는 Cas No. 135861-56-2인 솔비톨(Sorbitol)계 핵제를 사용한다.The nucleating agent used in the present invention is a nucleating agent for improving the overall crystallinity of the polypropylene by crystallization when the polypropylene is crystallized to improve the physical properties such as heat resistance, crystallization temperature, rigidity, and specifically, Cas No. Sorbitol-based nucleating agent of 135861-56-2 is used.
상기 핵제의 함량은 전체 조성물에 대하여 0.01 ~ 5.0 중량%를 사용하는데, 0.01 중량% 미만일 때에는 내열성 및 강성 개선효과가 없으며, 5.0 중량%를 초과할 때에는 더 이상의 물성 향상효과가 없다.The content of the nucleating agent is used 0.01 to 5.0% by weight based on the total composition, when less than 0.01% by weight has no effect of improving heat resistance and rigidity, and when it exceeds 5.0% by weight, there is no further improvement of physical properties.
본 발명의 수지 조성물에는 산화방지제, 활제, 슬립제, 내열안정제, 대전방지제, 안료, 염료 등과 같은 각종 첨가제가 본 발명의 목적을 저해하지 않는 범위 내에서 첨가될 수 있다.Various additives such as antioxidants, lubricants, slip agents, heat stabilizers, antistatic agents, pigments, dyes and the like may be added to the resin composition of the present invention within a range that does not impair the object of the present invention.
본 발명의 폴리프로필렌 수지 조성물을 제조하는 방법으로는 2축 압출기를 사용한 혼련이 바람직하며, 보편적으로 알려진 폴리프로필렌 수지 조성물을 제조하는 가공조건을 이용하고 폴리프로필렌 융점 이상에서의 배합 또한 가능하다. As a method for producing the polypropylene resin composition of the present invention, kneading using a twin screw extruder is preferable, and mixing at a polypropylene melting point or more is also possible using processing conditions for producing a generally known polypropylene resin composition.
본 발명은 하기의 실시예에 의하여 보다 구체적으로 이해될 수 있으며, 하기 의 실시예는 본 발명을 예시하기 위한 예에 지나지 않는 것으로, 본 발명의 보호 범위를 제한하고자 하는 것은 아니다.The present invention can be understood in more detail by the following examples, which are only examples for illustrating the present invention, and are not intended to limit the protection scope of the present invention.
실시예Example
실시예 1 및 비교예 1 ~ 4Example 1 1 and Comparative Examples 1 to 4
실시예와 비교예에 대한 각 성분들의 함량과 이에 따라 제조된 폴리프로필렌 수지 조성물의 물성결과를 표 1에 나타내었으며, 각 물성의 평가방법은 다음과 같다. The content of each component and the physical properties of the polypropylene resin composition prepared according to the Examples and Comparative Examples are shown in Table 1, the evaluation method of each physical property is as follows.
[물성 평가 방법][Property evaluation method]
1) HDT : 길이가 127mm이고 폭이 12.7mm이고 두께가 6.4mm인 시험시편을 사출성형기를 사용하여 성형시키고, ASTM의 D648 시험규격중 4.6kgf/cm2의 하중으로 수행하는 것을 기준으로 하였다. 1) HDT: Test specimens of length 127mm, width 12.7mm and thickness 6.4mm were molded using an injection molding machine, and were carried out with a load of 4.6kgf / cm 2 in ASTM D648 test standard.
2) 변색성 : 지름이 100mm이고 두께가 1.5mm인 원형 시험 시편을 사출성형기를 사용하여 성형시키고, 항온 항습하에서(23±1℃, RH 50%) 4일 경과 후 측색기로 변색도를 측정하였다.2) Discoloration: Circular test specimens having a diameter of 100 mm and a thickness of 1.5 mm were molded using an injection molding machine, and the discoloration degree was measured with a colorimeter after 4 days under constant temperature and humidity (23 ± 1 ° C, RH 50%). .
6) 항균성 : 필름밀착법으로 소정의 초기농도(균주 1: 1.2×105 cells/㎖; 균주 2: 1.6×105 cells/㎖)로 균을 접종하고, 35±1℃, RH 90%의 조건에서 24시간 정치 배양 후 생존 균수를 측정함으로써 평가되었다.6) Antimicrobial: Inoculate the bacteria at a predetermined initial concentration (strain 1: 1.2 × 105 cells / ml; strain 2: 1.6 × 105 cells / ml) by the film adhesion method, and inoculate at 35 ± 1 ° C. and RH 90%. It was evaluated by measuring the viable count after 24 hours of incubation.
[주][week]
1) 폴리프로필렌 : 호모 폴리프로필렌,용융지수(MI) : 1~50g/10분, 삼성토탈1) Polypropylene: Homo polypropylene, Melt index (MI): 1 ~ 50g / 10min, Samsung Total
2) 은(Ag)-담지 제올라이트 : 평균입도 3.5㎛, C&C2) Silver (Ag) -supported zeolite: average particle size 3.5㎛, C & C
3) 내후안정제 : 벤조트릴아졸계 화합물 및 세바케이트계 화합물, CIBA-GEIGY3) Weather stabilizer: benzotriazole compound and sebacate compound, CIBA-GEIGY
4) 핵제 : Sorbitol계 화합물, Milliken Chemical, INC.4) Nucleating agent: Sorbitol compound, Milliken Chemical, INC.
5) 황색포도상구균(staphylococcus Aureus) : ATCC 65385) Staphylococcus Aureus: ATCC 6538
6) 대장균(Escherichia Coli) : ATCC 259226) Escherichia coli: ATCC 25922
실험 결과로부터 알 수 있듯이, 항균제를 포함하는 실시예 1 및 비교예 3~4의 조성물은 자연적으로 균이 증가되는 비교예 1 ~ 2의 조성물에 비해, 24시간 경과 후 균수가 현저하게 감소하여 균 감소율이 99% 이상에 달하는 우수한 항균 효과를 나타내었다. 이는 세균 및 곰팡이의 발생 및 증식을 은(Ag) 입자가 억제하고 악취를 제거하여 위생적임을 나타낸다. 또한 항균제를 포함하면서 내후안정제를 포함한 실시예 1 및 비교예 4의 변색도가 역시 항균제를 포함하면서 내후안정제를 포함하지 않은 비교예 3와 대비하여 변색도가 낮으며, 이는 가공중의 높은 온도나 공기중의 수분에 의한 항균제의 변색을 내후안정제를 첨가함으로써 변색의 촉진을 억제시켜 줄 수 있음을 확인하였다. 핵제를 포함한 실시예 1 및 비교예 2, 3의 열변형온도 역시 핵제를 포함하지 않은 비교예 1~2 및 비교예 4에 대비하여 높은 값을 보이며 이는 그만큼 높은 내열성을 가진다는 의미이다.As can be seen from the experimental results, the compositions of Examples 1 and Comparative Examples 3 to 4 containing the antimicrobial agents were significantly reduced after 24 hours compared to the compositions of Comparative Examples 1 to 2, which naturally increased bacteria. It showed an excellent antimicrobial effect with a reduction rate of 99% or more. This indicates that silver particles (Ag) particles inhibit the development and growth of bacteria and fungi and are hygienic by removing odors. In addition, the discoloration degree of Example 1 and Comparative Example 4 including the antibacterial agent and the weather stabilizer was also lower than the comparative example 3 including the antibacterial agent and did not include the weather stabilizer. It was confirmed that discoloration of the antimicrobial agent due to moisture in the air can suppress the promotion of discoloration by adding a weather stabilizer. The heat deflection temperatures of Examples 1 and Comparative Examples 2 and 3 including a nucleating agent also show high values compared to Comparative Examples 1 and 2 and Comparative Example 4 containing no nucleating agent, which means that they have high heat resistance.
Claims (8)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110303093A1 (en) * | 2010-05-11 | 2011-12-15 | Youngmin Jeung | Wet-type air purifying apparatus |
| KR20160116454A (en) * | 2015-03-30 | 2016-10-10 | 백상산업(주) | Packing Case SheetT for Bean Curd and Its Production Method |
| US9982120B2 (en) | 2014-02-06 | 2018-05-29 | Basell Poliolefine Italia S.R.L. | Polypropylene compositions |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110303093A1 (en) * | 2010-05-11 | 2011-12-15 | Youngmin Jeung | Wet-type air purifying apparatus |
| US9982120B2 (en) | 2014-02-06 | 2018-05-29 | Basell Poliolefine Italia S.R.L. | Polypropylene compositions |
| KR20160116454A (en) * | 2015-03-30 | 2016-10-10 | 백상산업(주) | Packing Case SheetT for Bean Curd and Its Production Method |
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