KR101617614B1 - Pvc resin composition using the same, and drain sewage pipes containing nano silica - Google Patents
Pvc resin composition using the same, and drain sewage pipes containing nano silica Download PDFInfo
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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
- C08L27/00—Compositions of 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 a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of 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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of 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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- C08K3/0033—
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- C08K3/005—
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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
- C08K3/04—Carbon
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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
- C08K5/0016—Plasticisers
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L11/00—Hoses, i.e. flexible pipes
- F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
Abstract
Description
본 발명은 충격강도, 인장강도 등의 기계적 성질을 향상시킴과 동시에 내부식성, 내마모성, 내오염성 및 항균성을 향상시키는 나노실리카를 함유하는 상하수도관 및 오수받이 등의 이음관용 폴리염화비닐수지 조성물에 관한 발명이다.
The present invention relates to a polyvinyl chloride resin composition for joints such as sewage pipes and sewage pipes containing nanosilica which improves mechanical properties such as impact strength and tensile strength and improves corrosion resistance, abrasion resistance, stain resistance and antimicrobial property Invention.
종래 상하수도관은 주로 주철이나 아연을 주성분으로 하는 금속관을 사용하여 왔으나, 금속관은 산화에 취약하여 장기간 사용 시에는 그 금속관의 내부가 산화되어 녹물이 수돗물에 유입되는 내구성의 문제점이 심각하게 발생할 뿐만 아니라, 금속관은 경직성으로 인해 휘어지거나 절단되는 등, 금속관을 결합하는 작업이 복잡하고 그 시공에도 어려움이 있었다. 따라서 최근 상하수도관 등은 거의 대부분이 PVC 수지관으로 대표되는 합성수지관이 사용되고 있으며, 합성수지관은 금속관에 비해 내구성, 내약품성 및 시공성이 우수하다. 그러나, 상하수도관이나 이음관들이 수압에 견디고 향균성을 갖기 위하여 조성 성분들에 대한 새로운 기술 개발이 활발히 진행되고 있다.Conventional water supply and sewage pipes have mainly used metal pipes mainly made of cast iron or zinc, but the metal pipes are vulnerable to oxidation. Therefore, when they are used for a long period of time, the inside of the metal pipes are oxidized and the problem of durability , The metal pipe is bent or cut due to rigidity, and the work of connecting the metal pipe is complicated, and the construction thereof is difficult. Therefore, most of the recent water supply and sewage pipes have used synthetic resin pipes, which are represented by PVC resin pipes, and synthetic pipes have superior durability, chemical resistance, and workability as compared with metal pipes. However, new techniques for the composition ingredients are being actively developed to ensure that water and sewage pipes and joint pipes can withstand water pressure and have antibacterial properties.
그 일례로 국내 등록실용신안공보 제20-428387호는 이중관의 성형시에, 폴리올레핀(PE) 내관과 PVC 외관의 열 수축율의 차이로 인해 내·외관이 일체로 결합하지 못하고 틈이 생겨 분리되는 문제점을 해결하기 위해 내관 조성물에 폴리올레핀(PE) 수지 대비 125~145%DP 달하는 다량의 탄산칼슘(CaCO3)을 충진제로 포함시킴에 의해 내관 조성물의 열 수축율을 낮추어 성형성을 향상시키고자 하는 것이나, 한 종류의 충진제를 과다하게 첨가함으로 인해 내관의 기계적 물성을 달성하기 어렵고, 또한 충진제가 수돗물의 소독제로 사용되는 염소나 오존 등과 작용하여 수돗물에 충진제의 부스러기(debris)가 혼입될 가능성도 있다.
For example, Korean Utility Model Registration No. 20-428387 discloses that when molding a double tube, the inside and the outside of the polyolefin (PE) pipe and the outer surface of the PVC are different in heat shrinkage ratio, (CaCO 3 ) of 125 to 145% DP as compared with a polyolefin (PE) resin as a filler to improve the moldability by lowering the heat shrinkage ratio of the inner tube composition, It is difficult to achieve the mechanical properties of the inner pipe due to excessive addition of one type of filler, and there is also a possibility that the filler is mixed with debris of the filler in the tap water by acting with chlorine or ozone used as a disinfectant of tap water.
또한, 국내 등록특허공보 제10-1214800호는 중심층에 C-PVC(염화 폴리비닐클로라이드)를 함유하는 3층 구조의 내충격 수도관에 관한 것으로, 내·외층은 PVC 수지가 주재료이고, 중심층은 C-PVC(염화 폴리비닐클로라이드) 수지가 주재료인 삼중관 구조로서, 성형시에 정전기현상이 발생하지 않고, 성형 압출량이 증대하며, 성형시에 수지의 탄화현상이 발생하지 않는 삼중관 구조의 수도관 조성물을 제공하고자 하는 것이나, 단지 성형시의 성형성만 개선한 것일 뿐 수도관의 구성이 복잡하고, 수도관의 기계적 물성이나 내구성 등에 대해서는 종래에 비해 특별한 개선된 것이라고 보기 어렵다.
In addition, Korean Patent Registration No. 10-1214800 relates to an impact resistant water pipe having a three-layer structure containing C-PVC (chlorinated polyvinyl chloride) in the center layer, PVC resin as a main material for the inner and outer layers, A triple tube structure in which C-PVC (chlorinated polyvinyl chloride) resin is the main material, has a triple tube structure in which no electrostatic phenomenon occurs at the time of molding and the molding extrusion amount is increased, The composition of the water pipe is complicated and the mechanical properties and durability of the water pipe are not particularly improved compared to the conventional ones.
또한, 국내 등록특허공보 제10-793903호는 수도관에 항균성을 부여하기 위해 은 나노나 무기 항균제를 수도관용 조성물에 첨가하는 것이나, 수도관의 기계적 물성이나 내구성 등을 향상시키는 것에 대해서는 별다른 개시가 없다.
In addition, Korean Patent Publication No. 10-793903 does not disclose the addition of silver nanoparticles or inorganic antibacterial agents to water pipe compositions for imparting antimicrobial properties to water pipes, and improvement of mechanical properties and durability of water pipes.
본 발명자는 상하수도관 및 오수받이 등의 이음관용 수지 조성물에 대한 무수한 반복실험을 한 결과, 충진제로 탄산칼슘을 단독으로 다량 사용하는 것보다는 나노 실리카, 알루미나, 실리콘 화합물, 나노섬유 및 탄산칼슘을 적절한 비율로 혼합하여 사용하는 것이 내구성의 향상 및 수질오염에 유리하다는 것을 발견하였다. The present inventors conducted numerous and repeated experiments on resin compositions for joint pipes such as water supply and drainage pipes and sewer pipes. As a result, it was found that nano silica, alumina, silicone compound, nanofiber, and calcium carbonate were more appropriate than calcium carbonate alone as a filler By weight ratio is advantageous in improving durability and water pollution.
특히 나노 실리카 및 실리콘 화합물을 포함함으로써 PVC 수지 사슬과 충진제 입자가 서로 강력히 결합하여 압축강도, 충격강도 등의 기계적 물성을 대폭 향상시키며, 아울러 나노섬유를 포함시켜 인장강도를 크게 향상시킬 수 있다. Particularly, by including nano silica and a silicone compound, the PVC resin chain and the filler particles are strongly bonded to each other, and the mechanical properties such as compressive strength and impact strength are greatly improved, and the tensile strength can be greatly improved by including the nanofiber.
또한 항균제로 은나노나 무기항균제를 그대로 사용하기보다는 은을 알루미나의 넓은 표면적이 흡착시킨 Ag-알루미나 복합체를 사용하는 것이 항균 효율면에서 우수하다는 것을 발견하였다. 본 발명은 상기와 같은 연구결과를 토대로 토압이나 수압에 견딜 수 있고 항균성이 우수한 상하수도관 및 오수받이 등의 이음관용 수지 조성물을 제공하고자 함에 있다.It has also been found that the Ag-alumina composite in which silver is adsorbed on a large surface area of alumina is superior in antibacterial efficiency, rather than silver nano or inorganic antimicrobial agent as an antimicrobial agent. Disclosure of the Invention The present invention is to provide a resin composition for a joint pipe such as a sewerage pipe and a sewer pipe which can withstand earth pressure and water pressure and is excellent in antibacterial property based on the above-mentioned research results.
상기 과제를 해결하기 위해, 본 발명은 PVC 수지를 주재료로 하면서, 항균제로 Ag-알루미나 복합체를 그리고 나노실리카, 나노섬유, 특정 구조의 실리콘 화합물 및 탄산칼슘으로 이루어진 및 4종의 충진제을 함유한 수지 조성물을 제공함으로써 수도관 및 오수받이관의 항균성을 향상시키고, 기계적 물성이나 내구성 및 시공성이 우수한 합성수지관을 제조함에 있다.
In order to solve the above-described problems, the present invention provides a resin composition comprising a main component of a PVC resin, an Ag-alumina composite as an antimicrobial agent, and a resin composition comprising nanosilica, a nanofiber, a silicone compound having a specific structure, calcium carbonate and four fillers To improve antimicrobial properties of water pipes and sewer pipes and to produce synthetic resin pipes having excellent mechanical properties, durability and workability.
본 발명은 충진제로 나노 실리카, 알루미나, 실리콘 화합물, 나노섬유 및 탄산칼슘을 적절한 비율로 혼합함으로써 PVC 수지 사슬과 충진제 입자가 서로 강력히 결합하여 압축강도, 충격강도 등의 기계적 물성을 대폭 향상시키며, 아울러 나노섬유를 함유함으로써 인장강도를 크게 향상시키며, 또한, 항균제로 은을 알루미나의 넓은 표면적이 흡착시킨 Ag-알루미나 복합체를 사용함으로써 항균성이 우수하다.시
In the present invention, by mixing nano silica, alumina, a silicone compound, a nanofiber and calcium carbonate in a proper ratio as a filler, the PVC resin chain and the filler particles are strongly bonded to each other to greatly improve mechanical properties such as compression strength and impact strength, The use of Ag-alumina composite in which a large surface area of silver is adsorbed by an antimicrobial agent is excellent in antimicrobial activity.
PVC 수지 조성물을 주재료로 제조되는 관은 원통형 파이프, 타원형 파이프, 난형관, 오수받이, 이음관 등이 있으며, 이음관에는 엘보형 이음관, Y형 이음관. 45도 엘보형 이음관, LT 또는 YT형 등이 있다. 상기의 관들을 제조할 수 있는 본 발명의 수지 조성물의 구성 성분들에 대하여 구체적으로 살펴본다.
There are cylindrical pipe, elliptical pipe, ovoid pipe, sewage pipe, joint pipe and the like which are made of PVC resin composition as its main material. Elbow type joint pipe, Y type joint pipe, A 45-degree elbow joint pipe, and LT or YT type. The constituents of the resin composition of the present invention capable of producing the above-mentioned pipes will be described in detail.
<수지 조성물의 구성><Composition of Resin Composition>
본 발명의 수지 조성물의 조성 성분 및 조성 비율은 PVC수지 100중량부에 대하여 충진제 7~13.2중량부, 항균제 0.5~1.5중량부, 카본 블랙 0.2~0.4 중량부, 가소제 1~3중량부, 열 안정제 2~4중량부, UV 흡수제 0.7~1.5중량부 및 충격흡수제 1~3중량부로 조성됨을 특징으로 한다.
The composition and composition ratio of the resin composition of the present invention are such that the filler is 7 to 13.2 parts by weight, the antibacterial agent is 0.5 to 1.5 parts by weight, the carbon black is 0.2 to 0.4 parts by weight, the plasticizer is 1 to 3 parts by weight, 2 to 4 parts by weight, 0.7 to 1.5 parts by weight of a UV absorber and 1 to 3 parts by weight of a shock absorber.
상기의 조성성분 및 조성비율 중에서 충진제의 함량이 7중량부 이하이면 PVC 수지의 열 수축율이 현저하게 높아지며, 인장강도 등의 기계적 물성이 나빠지고는 단점이 있고, 13.2 중량부 이상이면 수도관이 너무 딱딱해져 충격강도 등의 물성이 나빠진다. 특히 충진제로 탄산칼슘(CaCO3)만을 사용하는 종래기술의 경우에는 수돗물에 포함되어 있는 염소, 오존 등의 소독제와 장기간 작용하여 탄산칼슘의 부스러기(debris)가 수돗물로 유입될 여지도 있으나, 본 발명에서는 이러한 작용이 거의 없는 나노실리카, 알루미나 등과 함께 사용하여 탄산칼슘의 첨가량이 현저하게 감소하므로 위의 문제점은 발생하지 않는 것이다.If the content of the filler is less than 7 parts by weight, the heat shrinkage of the PVC resin becomes remarkably high and the mechanical properties such as tensile strength are deteriorated. When the filler content is 13.2 parts by weight or more, And the physical properties such as impact strength are deteriorated. Particularly, in the case of the prior art using only calcium carbonate (CaCO 3 ) as a filler, debris of calcium carbonate may flow into the tap water due to long-term action with disinfectants such as chlorine and ozone contained in tap water, The above problem is not caused because the addition amount of calcium carbonate is remarkably reduced when used together with nano silica, alumina or the like which hardly exhibits such action.
또한, 항균제의 함량이 0.5중량부 이하이면 항균효과가 약하고, 1.5중량부 이상을 첨가하여도 항균효과의 추가적인 상승이 나타나지 아니한다. 항균제는 은나노나 항균제를 PVC 수지에 그대로 첨가하기보다는 알루미나와 같이 비표면적이 큰 미세한 입자에 은(Ag)을 흡착시킨 Ag-알루미나 복합체의 형태로 첨가하는 것이 효율적이다. When the content of the antimicrobial agent is less than 0.5 parts by weight, the antimicrobial effect is weak. When the amount of the antimicrobial agent is more than 1.5 parts by weight, no further increase in the antibacterial effect is exhibited. It is effective to add antimicrobial agents in the form of Ag-alumina complex adsorbed on fine particles having a large specific surface area such as alumina instead of silver nanoparticles or antimicrobial agents added directly to PVC resin.
카본블랙은 대전방지제로서 성형시에 정전기의 발생을 방지하는 작용을 할 뿐만 아니라 PVC 수지의 물성을 보강하기 위한 충진제의 역할도 하는 것으로서 통상 0.2~0.4중량부만 포함하여도 충분하다. 0.2중량부 이하이면 대전방지제의 기능이 약하고, 0.4중량부 이상을 첨가하여도 추가적인 기능의 상승이 나타나지 아니한다.Carbon black is an antistatic agent, which acts not only to prevent the generation of static electricity at the time of molding, but also to act as a filler to reinforce the physical properties of the PVC resin. It is usually sufficient to include only 0.2 to 0.4 parts by weight. If the amount is less than 0.2 part by weight, the function of the antistatic agent is weak, and if the amount of the antistatic agent is more than 0.4 part by weight, no further increase in function is exhibited.
가소제의 함량이 1중량부 이하이면 성형성이 나빠지고, 3중량부 이상이면 물성이 나빠질 뿐만 아니라 과도한 가소제의 함량으로 인해 여분의 가소제가 외관의 표면으로 유출(migration)되는 현상이 발생한다. 열 안정제, UV 흡수제, 충격흡수제는 위 함량범위의 하한보다 적으면 고유의 기능이 충분히 나타나지 아니하고, 위 함량범위의 상한보다 더 첨가하여도 추가적인 기능의 상승이 나타나지 아니한다.
If the content of the plasticizer is less than 1 part by weight, the moldability deteriorates. If the amount of the plasticizer is more than 3 parts by weight, the excess plasticizer may migrate to the outer surface due to the excessive plasticizer content. If the amount of heat stabilizer, UV absorber or shock absorber is less than the lower limit of the stomach content range, the intrinsic function is not sufficiently exhibited. If the stomach content is more than the upper limit of the stomach content range, no further increase in function is observed.
본 발명의 충진제를 구체적으로 살펴보면 나노실리카 10중량부 , 탄산칼슘 0.7~1.2중량부, 나노섬유 1~3 중량부, 실리콘 화합물[Si(CH2CH2Cl)2(CH2CH2OH)2] 0.1~0.3중량부를 포함함으로써 외관의 인장강도, 파단강도, 압축강도, 충격강도를 비약적으로 향상시킬 수 있는데, 나노섬유는 탄소섬유, 유리섬유, 아라미드 섬 유 등 서브 마이크론 이하의 섬유로 길이가 1mm ~ 20cm의 범위이면 가능하다. 나노섬유는 외관의 길이 방향(MD)으로 배열되어 성형되는데, 그 함량이 1 중량부 이하이면 인장강도 등의 기계적 물성의 증가가 미미하고, 3 중량부 이상이면 인장강도 등이 과도하게 높아져 시공성이 나빠진다. Specifically, the filler of the present invention comprises 10 parts by weight of nano silica, 0.7 to 1.2 parts by weight of calcium carbonate, 1 to 3 parts by weight of nanofibers, a silicon compound [Si (CH 2 CH 2 Cl) 2 (CH 2 CH 2 OH) 2 ], The tensile strength, fracture strength, compressive strength and impact strength of the outer tube can be remarkably improved. The nanofiber is a sub-micron fiber such as carbon fiber, glass fiber or aramid fiber, It is possible if it is in the range of 1mm ~ 20cm. When the content is less than 1 part by weight, the increase in mechanical properties such as tensile strength is insignificant. When the content is more than 3 parts by weight, the tensile strength and the like are excessively high, It gets worse.
또한, 실리콘 화합물[Si(CH2CH2Cl)2(CH2CH2OH)2]은 통상적으로 사용되는 충진제인 실리카, 알루미나, 탄산칼슘 등과는 달리(이러한 충진제는 그 표면에 산소만 노출되어 있어서 PVC 수지의 염소와 반데르발스력에 의한 결합만 이루어진다), 염소(Cl)를 포함하고 있어서 PVC 수지의 염소(Cl)와의 결합력이 극히 높고, 또한 수산기(OH)를 포함하고 있어서 충진제 표면에 노출되어 있는 산소와 강력한 수소결합을 함으로 인해 충진제와 PVC 수지 사슬을 강력하게 결합하는 기능을 함으로써 외관의 인장강도, 파단강도, 압축강도, 충격강도 등을 비약적으로 향상시키는 기능을 하는 것인데, 이는 본 발명자들이 처음으로 발견한 새로운 첨가제라고 할 수 있다. 상기 실리콘 화합물의 함량이 0.1중량부 이하이면 그 기능이 충분하지 아니하고, 0.3중량부 이상이면 압축강도 등이 지나치게 높아져 시공성이 나빠지고 아울러 과도하게 첨가된 실리콘 화합물이 외관의 표면으로 유출되는 문제점이 발생할 수 있다.Unlike silica, alumina, and calcium carbonate, which are commonly used fillers (such a filler has only oxygen exposed on the surface thereof), the silicon compound [Si (CH 2 CH 2 Cl) 2 (CH 2 CH 2 OH) 2 ] (Cl), and the PVC resin has extremely high bonding force with chlorine (Cl) and also contains a hydroxyl group (OH). Therefore, the surface of the filler It has a function of strongly bonding the filler and the PVC resin chain by strong hydrogen bonding with the exposed oxygen, thereby improving the appearance tensile strength, fracture strength, compressive strength and impact strength remarkably. It is the first new additive discovered by the inventors. If the content of the silicone compound is less than 0.1 part by weight, the function is not sufficient. If the amount of the silicone compound is more than 0.3 parts by weight, the compressive strength and the like are excessively increased, which deteriorates the workability and causes a problem that the excessively added silicone compound flows out to the surface of the outer surface .
실리콘 화합물의 분자 구조식는 아래의 화학식 1과 같다.The molecular structure of the silicone compound is represented by the following formula (1).
〈화학식 1〉
≪ Formula 1 >
이하에서는 구체적인 실시예를 통해 본 발명의 효과를 살펴본다.
Hereinafter, effects of the present invention will be described with reference to concrete examples.
[구체적인 실시예][Specific Example]
본 발명의 수지조성물 조성 성분 및 조성비율은 다음과 같다.The resin composition composition and composition ratio of the present invention are as follows.
중량평균분자량(Mw)이 약 40,000인 PVC(polyvinyl chloride) 수지 100중량부, 나노실리카 10중량부, 탄산칼슘 0.7~1.2중량부 , 나노섬유 1~3 중량부, 실리콘 화합물[Si(CH2CH2Cl)2(CH2CH2OH)2] 0.1~0.3중량부, 알루미나(Al2O3) 10중량부, Ag-알루미나 복합체 5중량부, 카본블랙(C/B) 0.5중량부, 가소제(DOP) 2중량부, 열 안정제(칼슘스테아레이트) 3중량부, UV 흡수제(HPT) 1중량부, 충격흡수제(SBR) 1중량부를 포함한다.
The weight average molecular weight (Mw) of about 40,000 of PVC (polyvinyl chloride) resin, 100 parts by weight of nano-silica, 10 parts by weight calcium carbonate 0.7 ~ 1.2 parts by weight of nanofiber 1-3 parts by weight of silicone compound [Si (CH 2 CH 2 Cl) 2 (CH 2 CH 2 OH) 2] 0.1 ~ 0.3 parts by weight of alumina (Al 2 O 3) 10 parts by weight, Ag- alumina complex 5 parts by weight of carbon black (C / B) 0.5 parts by weight of plasticizer (DOP), 3 parts by weight of a heat stabilizer (calcium stearate), 1 part by weight of a UV absorbent (HPT) and 1 part by weight of a shock absorber (SBR).
탄산칼슘 : 평균입경 0.14um, 비중 2.75g/cm3 Calcium carbonate: average particle diameter 0.14 탆, specific gravity 2.75 g / cm 3
나노실리카 : 비표면적 25m2/g, 평균입경 0.12um, 비중 2.1g/cm3 Nano silica: specific surface area 25 m 2 / g, average particle diameter 0.12 μm, specific gravity 2.1 g / cm 3
Ag-알루미나 복합체 : 평균입경 0.3um, 비중 3.97g/cm3 Ag- Alumina Composites: 0.3um mean particle size, specific gravity 3.97g / cm 3
나노 섬유 : 직경 0.7um, 길이 2cm Nanofiber: diameter 0.7um, length 2cm
실리콘 화합물 : Si(CH2CH2Cl)2(CH2CH2OH)2
Silicon compound: Si (CH 2 CH 2 Cl) 2 (CH 2 CH 2 OH) 2
[표 1]의 본 발명의 수지 조성물과 비교 예 1 내지 4의 수지 조성물을 각각 혼련, 용융시키고 성형하여 수도관을 제조하였다(H-Mixer 작업온도 125oC, C-Blander 작업온도 50-oC). 제조된 수지관의 인장강도, 압축강도, 충격강도 등에 대하여 시험한 결과는 표 2와 같다.The resin composition of the present invention in Table 1 and the resin compositions of Comparative Examples 1 to 4 were respectively kneaded, melted and molded to prepare a water pipe (H-Mixer working temperature 125 ° C, C-Blander working temperature 50 ° C ). Table 2 shows the results of the tensile strength, compressive strength, impact strength and the like of the manufactured resin pipes.
인장강도는 만능재료시험기(Instron)로 길이방향(MD)으로 인장하면서 25 oC에서 측정하였고, 압축강도는 대영정밀의 압축강도기로 수직방향(TD)으로 하중을 가하면서 측정하였다.Tensile strength was measured at 25 ° C in a longitudinal direction (MD) with an universal material tester (Instron), and the compressive strength was measured by applying a load in the vertical direction (TD) with a compression strength of DAE Young Precision.
충격강도는 HI-VP 100mm 기준으로 9kg의 추를 높이 1.5M에서의 낙하시킬 경우의 시편 10개 중에 파괴된 시편의 갯수로 나타냈으며, 항균성은 대장균으로 시험하였으며, 수지관 조성물로 필름을 만들고 그 위에 균을 접종한 경우에 48시간 후에도 생존해 있는 균의 수의 비율이다(덕우과학의 colony counter 사용).The impact strength was expressed as the number of specimens destroyed in 10 specimens when a weight of 9 kg was dropped at a height of 1.5 kg under HI-VP 100 mm. Antimicrobial activity was tested with Escherichia coli, And the percentage of viable microorganisms surviving after 48 hours (using the colony counter of Deokwoo Science).
그리고, 무기물 함량은 수도관을 1개월 사용한 후에 검출되는 수돗물 중의 무기물(실리카, 알루미나, 탄산칼슘)의 농도를 ICP로 측정한 것이다.
And, the inorganic content is the ICP measurement of the concentration of inorganic substances (silica, alumina, calcium carbonate) in tap water detected after using the water pipe for one month.
(MPa)The tensile strength
(MPa)
(㎏/㎠)Compressive strength
(Kg / cm2)
(ppm)Minerals
(ppm)
[표 2]에서 알 수 있는 바와 같이, 본 발명의 수지 조성물에 포함되는 나노섬유(탄소섬유), 실리콘 화합물[Si(CH2CH2Cl)2(CH2CH2OH)2]로 인해 길이방향(MD)의 인장강도가 높고, 수직방향(TD)의 압축강도 및 충격강도도 높으며, 또한 Ag-알루미나 항균제로 인해 항균성이 우수하고, 탄산칼슘을 과도하게 첨가하지 아니하여 수돗물 중으로 유입되는 무기물도 없어 수질도 우수한 이중관 구조의 수도관임을 확인할 수 있었다.As can be seen from Table 2, due to the nanofiber (carbon fiber) and the silicon compound [Si (CH 2 CH 2 Cl) 2 (CH 2 CH 2 OH) 2 ] contained in the resin composition of the present invention, (MD), high compressive strength and impact strength in the vertical direction (TD), high antimicrobial properties due to the Ag-alumina antimicrobial agent, and an inorganic substance introduced into the tap water because calcium carbonate is not added excessively And it was confirmed that it is a double pipe structure with excellent water quality.
그러나, 비교예 1은 충진제로 탄산칼슘만을 과도하게 첨가하여 수돗물 중으로 탄산칼슘의 부스러기(debris)가 유입되는 문제점이 있고, 비교예 2는 Ag-알루미나 항균제를 포함하지 아니하여 항균성이 취약함을 알 수 있으며, 비교예 3은 나노섬유를 포함하지 아니하여 인장강도 및 충격강도가 취약함을 알 수 있고, 비교예 4는 실리콘 화합물[Si(CH2CH2Cl)2(CH2CH2OH)2]을 포함하지 아니하여 인장강도 및 충격강도가 매우 취약함을 알 수 있다.However, in Comparative Example 1, only calcium carbonate was excessively added as a filler to cause debris of calcium carbonate to be introduced into tap water. Comparative Example 2 showed that the antibacterial property was poor due to not containing Ag-alumina antimicrobial agent (Comparative Example 3) exhibited poor tensile strength and impact strength due to the absence of nanofibers. Comparative Example 4 shows that the silicon compound [Si (CH 2 CH 2 Cl) 2 (CH 2 CH 2 OH) 2 ] is not included, and thus tensile strength and impact strength are extremely weak.
Claims (7)
PVC수지 100중량부에 대하여, 나노실리카, 탄산칼슘, 나노섬유 및 실리콘 화합물[Si(CH2CH2Cl)2(CH2CH2OH)2]으로 조성된 충진제 7~13.2 중량부, 항균제 0.5~1.5 중량부, 카본 블랙 0.2~0.4 중량부, 가소제 1-3 중량부, 열 안정제 2~4 중량부, UV 흡수제 0.7~1.5 중량부 및 충격흡수제 1~3 중량부로 조성됨을 특징으로 하는 상하수도관 및 오수받이관용 수지 조성물.
In a resin composition for a water supply and drainage pipe and a waste water receiving pipe,
7 to 13.2 parts by weight of a filler composed of nano silica, calcium carbonate, nanofiber and a silicon compound [Si (CH 2 CH 2 Cl) 2 (CH 2 CH 2 OH) 2 ] per 100 parts by weight of the PVC resin, , 1.5 to 2 parts by weight of carbon black, 1 to 3 parts by weight of a plasticizer, 2 to 4 parts by weight of a heat stabilizer, 0.7 to 1.5 parts by weight of a UV absorber and 1 to 3 parts by weight of a shock absorber And a resin composition for a sewage pipe.
7 to 13.2 parts by weight of a filler composed of nano silica, calcium carbonate, nanofiber and a silicon compound [Si (CH 2 CH 2 Cl) 2 (CH 2 CH 2 OH) 2 ] per 100 parts by weight of the PVC resin, By weight of carbon black, 1-3 parts by weight of a plasticizer, 2 to 4 parts by weight of a heat stabilizer, 0.7 to 1.5 parts by weight of an UV absorber and 1 to 3 parts by weight of a shock absorber. tube.
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| CN106566112A (en) * | 2016-10-31 | 2017-04-19 | 无锡市永兴金属软管有限公司 | Oil conveying pipe and manufacturing method thereof |
| CN106566113A (en) * | 2016-10-31 | 2017-04-19 | 无锡市永兴金属软管有限公司 | Stainless steel telescopic pipe and preparation method thereof |
| CN106566130A (en) * | 2016-10-28 | 2017-04-19 | 无锡市永兴金属软管有限公司 | Flexile tube used for printing and dyeing, and production method thereof |
| CN106566131A (en) * | 2016-10-28 | 2017-04-19 | 无锡市永兴金属软管有限公司 | Corrugated pipe and preparation method thereof |
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