KR101401313B1 - Polyvinyl chloride laminating pipe of four layers structure - Google Patents

Polyvinyl chloride laminating pipe of four layers structure Download PDF

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KR101401313B1
KR101401313B1 KR1020130093750A KR20130093750A KR101401313B1 KR 101401313 B1 KR101401313 B1 KR 101401313B1 KR 1020130093750 A KR1020130093750 A KR 1020130093750A KR 20130093750 A KR20130093750 A KR 20130093750A KR 101401313 B1 KR101401313 B1 KR 101401313B1
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weight
parts
stabilizer
lubricant
layer
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KR1020130093750A
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Korean (ko)
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한진섭
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원진하이원 주식회사
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00Rigid pipes
    • F16L9/12Rigid pipes of plastics with or without reinforcement
    • F16L9/123Rigid pipes of plastics with or without reinforcement with four layers

Abstract

The present invention relates to a polyvinyl chloride pipe with a quadruple structure consisting of a surface layer, an outer hard layer, a center inner-pressure reinforcing layer, and an inner hard layer, in which carbon nanotubes or carbon graphite, and antioxidant are added to the polyvinyl chloride pipe to further increase a tensile force and a shock resistance, thereby prevent the tube from being broken or deformed due to external vibration or earthquake and also improving the binding strength. The surface layer (1) includes, based on 100 parts by weight of PVC, 3 to 6 parts by weight of a stabilizer, 2 to 8 parts by weight of an impact modifier, 10 to 20 parts by weight of nitrile synthetic rubber, 1 to 4 parts by weight of a lubricant, 0.5 to 1.5 parts by weight of TiO2, and 1 to 5 parts by weight of an antioxidant. The inner hard layer (4) and the outer hard layer (2) includes, based on 100 parts by weight of PVC, 3 to 6 parts by weight of a stabilizer, 7 to 15 parts by weight of an impact modifier, 1 to 3 parts by weight of a processing aid, 1 to 4 parts by weight of a lubricant, and 5 to 10 parts by weight of a filler. The center inner-pressure reinforcing layer (3) includes, based on 100 parts by weight of PVC, 10 to 20 parts by weight of ABS resin, 4 to 10 parts by weight of a stabilizer, 1 to 3 parts by weight of a processing aid, 0.8 to 2.5 parts by weight of a lubricant, and 3 to 5 parts by weight of carbon nanotubes or carbon graphite.

Description

4중 구조의 폴리염화비닐관{POLYVINYL CHLORIDE LAMINATING PIPE OF FOUR LAYERS STRUCTURE}POLYVINYL CHLORIDE LAMINATING PIPE OF FOUR LAYERS STRUCTURE [0002]

본 발명은 4중 구조의 폴리염화비닐관에 관한 것으로, 더욱 상세하게는 표피, 외부경질층, 중심내압강화층 및 내부경질층의 4중 구조로 이루어지는 폴리염화비닐관에 탄소나노튜브 또는 탄소 그라파이트 및 산화방지제를 첨가하여 인장력과 내충격성을 더욱 강화시켜서 외부의 진동이나 지진에 의한 파손 및 변형을 방지하고 접착력을 향상시킬 수 있도록 하기 위한 4중 구조의 폴리염화비닐관이다.More particularly, the present invention relates to a polyvinyl chloride tube having a quadruple structure of a skin layer , an outer hard layer, a center inner pressure strengthening layer, and an inner hard layer, and a carbon nanotube or carbon graphite It is a polytetrafluoroethylene (PVC) pipe with a four-layer structure to prevent the external vibration or earthquake, and to improve the tensile strength and impact resistance by adding an antioxidant.

일반적으로 수돗물 및 오폐수를 포함한 유체를 이송하는 종래의 수도관이나 하수도관은 주철관 등의 금속관을 사용하고 있으나, 장기간 사용할 경우 관 내부에 흐르는 수돗물이나 오수에 의해 내벽이 쉽게 부식되기 때문에 장기간 사용시 부식된 녹이 수돗물과 섞여 적수 또는 백수 등의 오염물을 발생시켜서 음용 할 수 없게 되고, 상기와 같은 부식으로 인해 관의 누수가 발생되거나 통수능력의 감소로 인하여 관의 수명이 현저하게 단축되는 문제점이 있었다.In general, a conventional water pipe or a sewer pipe for transporting fluids including tap water and wastewater is a metal pipe such as a cast iron pipe. However, since the inner wall easily corrodes due to tap water or sewage flowing in the pipe for a long period of time, It is not possible to drink water by mixing with tap water to generate contaminants such as enemy water or white water. Thus, there is a problem that leakage of the pipe occurs due to the corrosion as described above, or the lifetime of the pipe is remarkably shortened due to reduction of the water permeability.

이와 같은 문제점을 해결하기 위하여 PVC로 제조된 합성 수지관을 사용하였으나, 합성 수지관은 외부충격에 약해 쉽게 파손되는 단점이 있어 이를 개선하기 위하여 화학적 성능이 뛰어난 열안정제와 충격보강제를 개발하였고, 상기의 첨가제들의 물리적 특성을 적용하여 2중 구조 내지는 3중 구조의 폴리염화 비닐관을 개발하여 종래의 단일관에 비하여 내충격성을 향상시킬 수 있었다.To solve these problems, a synthetic resin pipe made of PVC was used. However, since synthetic resin pipes are vulnerable to external impacts, they are easily broken. To improve this, a thermal stabilizer and an impact modifier excellent in chemical performance were developed. The polytetrafluoroethylene pipe having a double structure or a triple structure was developed to improve the impact resistance as compared with the conventional single tube.

그러나 내충격성의 향상에만 치중하다 보니 관의 외면이 너무 강하여 취급 부주의로 인한 크랙이 발생하여 통수시 관이 찢어지는 문제가 다수 발생되고, 이음관 접합시 외면의 단단함과 미끄러움 때문에 접착부위가 분리되고 조임식 금속제 이음관을 체결한 경우에도 관이 미끄러져 이음관이 이탈하는 문제가 다발적으로 발생하는 실정이었다.However, since the outer surface of the pipe is too strong to prevent cracking due to careless handling, the pipe is torn at the time of water supply, and when the joint pipe is joined, the adhesive portion is separated due to the rigidity of the outer surface and slipperiness Even when the fastening type metal joint pipe is fastened, the pipe slips and the joint pipe is disassembled.

상기와 같은 종래의 기술들을 살펴보면. 일본 공개특허공보 소60-255813호에는 단독 중합체의 유리 전이 온도가 -10℃ 이하인 아크릴 단량체와 다관능성 단량체로 이루어진 아크릴계 공중합체에 염화비닐을 그래프트 공중합시켜 내충격성, 내후성, 굽힘 탄성이 우수한 염화비닐계수지를 제조하는 기술이 개시되어 있다.The above conventional techniques will be described. Japanese Unexamined Patent Publication (Kokai) No. 60-255813 discloses a vinyl chloride graft copolymerized with an acrylic copolymer composed of an acrylic monomer having a glass transition temperature of -10 ° C or lower and a polyfunctional monomer as a homopolymer, to produce a vinyl chloride copolymer having excellent impact resistance, weather resistance and bending elasticity A technique for manufacturing a toner is disclosed.

또 국내 등록특허 제909183호에는 폴리염화비닐수지에 탄소섬유를 혼합하여 강도를 향상시킨 보강층을 포함하는 삼중구조의 수도용 합성수지관에 관한 기술이 개시되어 있다.In addition, Korean Patent No. 909183 discloses a technique relating to a triple-structure water-based synthetic resin pipe including a reinforcing layer in which carbon fiber is mixed with polyvinyl chloride resin to improve strength.

그뿐만 아니라 국내 등록특허 제601004호에는 비납계 안정제와 레진(PVC원료)으로 이루어진 혼합분말을 사용하여 PVC성형관을 제조하는 방법이 개시되어 있다.In addition, Korean Patent No. 601004 discloses a method for producing a PVC molded tube using a mixed powder composed of a non-lead stabilizer and a resin (a raw material of PVC).

그러나 이들 기술에서는 염화비닐계 수지의 내충격성은 향상되고 있지만, 합성 수지관의 강도가 증가함에 따라 도리어 크랙이 발생하여 통수시 관이 찢어지는 경우가 다수 발생되고, 이음관 접합시 외면의 단단함과 미끄러움 때문에 접착부위가 분리되고 조임식 금속제 이음관을 체결한 경우에도 관이 미끄러져 이음관이 이탈하는 경우가 다발적으로 발생하는 문제점이 발생되었다.However, in these techniques, the impact resistance of the vinyl chloride resin is improved. However, as the strength of the synthetic resin pipe increases, cracks are generated and many pipes are torn at the time of water supply, and when the joint pipe is joined, It is possible to prevent the pipe from slipping due to the detachment of the joint portion and the metal pipe to be fastened.

따라서 우수한 내충격성을 가지면서도 관의 표면이 부드러워 크랙의 발생을 줄이고 관 이음이 수월한 합성 수지관의 제조에 관한 기술 개발이 활발히 진행되고 있고, 특히, 외부충격은 물론 지구환경변화로 인하여 자주 발생하는 지진에 대하여도 변형되거나 파손되지 않는 폴리염화비닐관의 제조가 요망되고 있다.Therefore, the development of a synthetic resin pipe having an excellent impact resistance and a smooth surface of the pipe to reduce the occurrence of cracks and to facilitate the pipe jointing has been progressing actively. Particularly, There has been a demand for the production of polyvinyl chloride pipes which are not deformed or damaged even by an earthquake.

[선행기술문헌][Prior Art Literature]

1. 일본 공개특허공보 소60-255813호1. JP-A-60-255813

2. 국내 등록특허 제909183호2. Domestic Registration No. 909183

3. 국내 등록특허 제601004호
3. Korean Patent No. 601004

본 발명은 상기와 같은 문제점을 해소하기 위해 종래에 사용하는 폴리염화비닐관보다 인장력과 강도를 더욱 높여서 열변형을 적게 하고, 지진에 의한 충격에도 강할 뿐만 아니라 내화학성, 내부식성, 작업성이 우수하며, 수압 및 외압에 의한 변형을 최소화할 수 있는 표면이 부드러운 합성수지관을 제공함을 목적으로 한다.In order to solve the above-mentioned problems, the present invention provides a polyvinyl chloride tube which is higher in tensile strength and strength than conventionally used polyvinyl chloride tubes, so that thermal deformation is reduced, and it is resistant to impacts caused by an earthquake as well as excellent in chemical resistance, corrosion resistance, The present invention provides a synthetic resin pipe with a smooth surface that can minimize deformation due to water pressure and external pressure.

즉, 표피층, 외부경질층, 중심내압강화층 및 내부경질층으로 이루어진 합성수지관은 중심내압강화층에 탄소나노튜브 또는 그라파이트를 첨가하여 내충격성의 향상은 물론 인장력을 더욱 높여서 특히 외부의 진동이나 지진에 의해 파손되는 것을 방지하는데 그 목적이 있다.That is, in the synthetic resin pipe composed of the skin layer, the outer hard layer, the center inner pressure strengthening layer and the inner hard layer, the carbon nano tube or the graphite is added to the inner pressure strengthening layer to further improve the impact resistance and further increase the tensile strength, Thereby preventing damage caused by the above-mentioned damage.

또한, 본 발명의 표피층에는 이산화티타늄 및 산화방지제가 함유되어 있어 야외 노출시 변형이나 노화현상을 방지하여 관이 수명을 증가시킴을 특징으로 한다. 또한, 본 발명은 표피층에 나노화된 조핵제와 흡착제를 첨가하여 폴리염화비닐관의 변색을 방지하고 투명도를 증가시키는데 그 목적이 있다.
Also, since the skin layer of the present invention contains titanium dioxide and an antioxidant, it is characterized by preventing the deformation and aging phenomenon in outdoor exposure, thereby increasing the life of the tube. Further, the present invention aims to prevent discoloration of a polyvinyl chloride tube and increase transparency by adding a nanonized nucleating agent and an adsorbent to the skin layer.

상기와 같은 목적을 달성하기 위하여 본 발명은 PVC 수지의 중합도와 첨가제들의 종류를 선정하여 물성과 가공성이 최적인 첨가제 함량을 선택하는 점에 있다. In order to achieve the above object, the present invention is characterized in that the degree of polymerization of the PVC resin and the kind of the additives are selected, and the additives and additives having the optimum properties and processability are selected.

그리고 본 발명은 중심내압강화층(3)에는 각각 탄소나노튜브 또는 탄소그라파이트를 6 - 8 : 2 -4의 비율로 혼합하여 인장력을 강화시킴과 동시에 내충격성에 강한 강도를 더욱 강화시켜서 외부의 진동이나 지진에 의해 파손되는 것을 방지하도록 함을 목적으로 한다. In the present invention, carbon nanotubes or carbon graphite are mixed in a ratio of 6 - 8: 2 - 4 to the inner pressure-increasing layer (3) to strengthen the tensile force and further strengthen the strength against impact resistance, And it is intended to prevent damage caused by earthquake or earthquake.

또한, 본 발명은 표피층(1)에 산화방지제를 혼합하여 외부노출시 변형이나 산화되어 노화하는 것을 미연에 방지함을 목적으로 한다.The present invention also aims to prevent the skin layer (1) from being aged by mixing with an antioxidant so as to be deformed or oxidized when exposed to the outside.

그뿐만 아니라 본 발명은 표피층(1)에 나노화된 조핵제와 흡착제를 첨가하여 폴리염화비닐관의 변색을 방지하고 투명도를 증가하도록 함에 특징이 있다. In addition, the present invention is characterized in that the nanocarbon nucleating agent and the adsorbent are added to the skin layer 1 to prevent discoloration of the polyvinyl chloride tube and increase transparency.

상기와 같은 특징을 갖는 본 발명은 종래의 4중관 보다 강도와 인장력을 더욱 향상시킴으로써 외부충격에 의한 파손이나 특히, 지진 등에도 훼손되지 않고, 관의 변색을 방지하고 투명도를 높이는데 효과가 있다.The present invention having such characteristics as described above further improves the strength and tensile force of the conventional quadrupole tube, thereby preventing discoloration of the tube and increasing transparency without damaging the tube due to external impact, particularly earthquake.

또한, 외부에 보관 중일 때 공기 중의 산소와 반응으로 인한 노화 현상을 방지함과 동시에 야외 적재시 적외선의 차단이 용이하기 때문에 성형물의 상하의 온도차에 따라 수축, 팽창에 의한 쉽게 변형이 생기는 것을 방지할 수 있어 수명을 연장하는 효과가 있다.
In addition, since it is possible to prevent the aging phenomenon due to the reaction with oxygen in the air when being stored in the outside, and to easily block infrared rays during outdoor loading, it is possible to prevent easily deformation due to shrinkage and expansion according to the temperature difference between the upper and lower sides of the molded article There is an effect of extending the life span.

도 1은 본 발명에 따른 4중 구조의 폴리염화비닐관의 사시도이다.
도 2는 본 발명에 따른 4중 구조의 폴리염화비닐관의 단면도이다.
1 is a perspective view of a poly-vinyl chloride tube of a quadruple structure according to the present invention.
2 is a cross-sectional view of a poly-vinyl chloride tube of a quadruple structure according to the present invention.

이하, 본 발명에 따른 4중 구조의 폴리염화비닐관에 대한 바람직한 실시 예에 대하여 첨부된 도면들을 참조로 하여 상세히 설명한다.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a poly-vinyl chloride tube having a quadruple structure according to the present invention will be described in detail with reference to the accompanying drawings.

본 발명의 도 1 및 도 2에 나타내는 바와 같이, 4중 구조의 폴리염화비닐경질관용 수지관은 표피층(1), 외부경질층(2), 중심내압강화층(30), 내부경질층(4)으로 구성된다.As shown in Figs. 1 and 2 of the present invention, a resin pipe for polyvinyl chloride hard tube having a quadruple structure comprises a skin layer 1, an outer hard layer 2, a center inner pressure strengthening layer 30, ).

상기 각층의 구성 및 조성물에 대하여 본 출원인이 이미 국내 특허 제 10-0937735로 개시하였으므로, 이에 대한 구체적인 실시 예에 대하여는 생략한다.The composition and composition of each layer described above have already been disclosed by the present applicant in Korean Patent No. 10-0937735, so that specific embodiments thereof are not described.

다만, 상기 개시된 기술구성에 대하여 여러 가지 문제점이 발견되어 이를 보강하기 위한 기술구성의 특징에 대하여만 하기와 같이 상세하게 기술한다.
However, various problems are found in the above-described technical construction, and the features of the technical construction for reinforcing it are described in detail as follows.

본 발명에 따른 표피층(1)은 PVC 100중량부에 대하여, 안정제 3~6중량부, 충격보강제 2~8중량부, 합성고무 10~20중량부, 활제 1~4중량부, 이산화티타늄(TiO2) 0.5~1.5중량부, 산화방지제 1~5중량부로 조성됨을 특징으로 한다.The skin layer 1 according to the present invention is prepared by mixing 3 to 6 parts by weight of a stabilizer, 2 to 8 parts by weight of an impact modifier, 10 to 20 parts by weight of a synthetic rubber, 1 to 4 parts by weight of a lubricant, 2 ) 0.5 to 1.5 parts by weight, and 1 to 5 parts by weight of an antioxidant.

또한, 상기의 표피층 조성물에 나노화된 조핵제와 흡착제를 더 첨가하여 성형시 균일하게 성형함과 동시에 결정화속도를 빠르게 함으로써 생산량의 증대는 물론 변색을 방지하고 관의 투명도를 향상시킬 수 있다.In addition, a nanonized nucleating agent and an adsorbent are further added to the above-mentioned skin layer composition to uniformly form the same at the time of molding, and at the same time, by increasing the crystallization speed, it is possible not only to increase the production amount but also to prevent discoloration and improve the transparency of the tube.

본 발명의 내·외부경질층(2)(4)은 PVC 100중량부에 대하여 안정제 3~6중량부, 충격보강제 7~15중량부, 가공조제 1~3중량부, 활제 1~4중량부, 충진제 5~10중량부로 구성한다.The inner and outer rigid layers (2) and (4) of the present invention are prepared by mixing 3 to 6 parts by weight of a stabilizer, 7 to 15 parts by weight of an impact modifier, 1 to 3 parts by weight of a processing aid, 1 to 4 parts by weight of a lubricant, , And 5 to 10 parts by weight of a filler.

상기 내, 외부경질층(2)(4)에도 필요에 따라서 전술한 나노화된 조핵제와 흡착제를 첨가할 수 있다.
The nanoized nucleating agent and the adsorbent may be added to the inner and outer hard layers 2 and 4 as required.

그리고 중심내압강화층(30)은 PVC 100중량부에 대하여 ABS계수지 10~20중량부, 무독안정제 4~10중량부, 가공조제 1~3중량부, 활제 0.8~2.5중량부, 카본나노튜브 또는 카본그라파이트 3~5중량부로 구성하여 인장력과 강도를 증진시켜 지진에 대해서도 파손되는 것을 방지시킨다.
The inner pressure-strengthening layer 30 is composed of 10 to 20 parts by weight of ABS resin, 4 to 10 parts by weight of a non-toxic stabilizer, 1 to 3 parts by weight of a processing aid, 0.8 to 2.5 parts by weight of a lubricant, Or 3 to 5 parts by weight of carbon graphite to improve tensile strength and strength to prevent damage to the earthquake.

상기와 같은 본 발명에 따른 4중 구조의 폴리염화비닐관을 성형하기 위하여는 3중의 공압출 다이가 필요하고, 공압출다이는 압출기에서 용융, 혼련된 수지를 4중 원형구조로 성형할 수 있는 것이어야 하며, 또한 각 층간의 두께조절을 위해 터피도(torpedo)는 끝(tip) 부분의 교체가 자유로우며 멘드릴(mandrel)은 상하좌우 방향으로 이동 가능한 것이어야 한다.In order to mold the poly-chlorinated vinyl chloride tube of the present invention as described above, a triple co-extrusion die is required, and the co-extrusion die is capable of molding a molten and kneaded resin in an extruder into a quadruple circular structure The torpedo should be able to change the tip and the mandrel should be able to move in the up, down, left, and right directions to control the thickness of each layer.

본 발명에 따르면, 폴리염화비닐은 수지 중합도가 증가할수록 기계적 물성은 증가하지만, 수지의 용융성과 용융흐름성이 저하되어 압출가공성이 떨어진다. 따라서, 압출가공에 적절한 수지 중합도와 가공성 개선을 위하여 활제의 첨가가 필수적이다.According to the present invention, the polyvinyl chloride increases the mechanical properties as the degree of polymerization of the resin increases, but the meltability and melt flowability of the resin deteriorate and the extrusion processability decreases. Therefore, it is necessary to add a lubricant to improve the polymerization degree and processability of the resin suitable for extrusion processing.

본 발명에 따른 표피층(1)의 합성고무는 부타디엔과 아크릴로니트릴의 공중합체인 니트릴고무를 사용하는 것이 바람직하다. 또한 안정제로 스테아린산 아연, 스테아린산 칼슘, 스테아린산 마그네슘을 단독 또는 혼합한 것을 사용한다. 그리고 활제는 스테아린산(Stearic acid)이나 폴리에틸렌왁스(Polyethylene wax)를 각각 단독 또는 혼합한 것을 사용하는 것이 바람직하며, 이산화티타늄의 밀도는 1.2 g/mℓ미만의 것을 사용하여야 한다. 산화티타늄의 밀도가 1.2 g/mℓ 이상일 경우 차폐력이 떨어지는 문제점이 있다. 산화방지제로는 알킬페닐류, 아민류, 퀴논류 중 어느 하나를 선택할 수 있다. 또한, 상기의 조핵제는 방향족 카르본산의 Na, Zn, Al의 금속염이 바람직하며, 본 발명에서는 실리카 겔(Siliuca Gell)이나 활성알루미나 겔(Activated Alumina Gell)을 흡착제로 사용하고 있다.The synthetic rubber of the skin layer (1) according to the present invention is preferably a nitrile rubber which is a copolymer of butadiene and acrylonitrile. As the stabilizer, zinc stearate, calcium stearate, and magnesium stearate may be used singly or in combination. Stearic acid or polyethylene wax may be used alone or as a lubricant. Titanium dioxide should have a density of less than 1.2 g / ml. When the density of the titanium oxide is 1.2 g / m < 1 > or more, the shielding force is deteriorated. As the antioxidant, any one of alkylphenyls, amines, and quinones can be selected. The crude nucleating agent is preferably an aromatic carboxylic acid metal salt of Na, Zn or Al. In the present invention, a silica gel (Siliuca Gell) or an activated alumina gel (activated alumina gel) is used as an adsorbent.

그리고 내·외부 경질층(2)(4)에 사용하는 충격 보강제는 MBS계(Methylmetacylate Butadiene Styene), 아크릴계, 부타디엔계 등의 충격보강제를 사용하는 것이 바람직하고 특히 MBS계 충격보강제를 사용하는 것이 가장 바람직하다.It is preferable to use an impact modifier such as MBS (methyl methacrylate butadiene styrene), acrylic, and butadiene based impact modifiers for the inner and outer hard layers (2) and (4) desirable.

또한, 충진제로는 나노입자의 비결정형 이산화 실리콘을 사용하는 것이 바람직하다. 중심내압 강화층(3)에는 ABS계 수지를 사용하는 것이 바람직하다. 이때 강도보강을 위해 카본나노튜브 또는 카본그라파이트를 혼합하여 지진 등의 외부충격에 견딜수 있도록 구성한다. 상기의 카본나노튜브는 고형체(펠릿) 형태 또는 물, 알코올, 유기용제에 희석시킨 액상 분산액 중 어느 하나로 혼합하는 것이 바람직하다. 즉, 카본나노튜브는 아주 미세한 분말로 이루어져 있어 휘산되므로 펠릿이나 분산제를 사용하여 휘산되는 것을 방지한다.As the filler, it is preferable to use amorphous silicon dioxide of nanoparticles. The ABS resin is preferably used for the inner pressure-strengthening layer (3). At this time, carbon nanotubes or carbon graphite are mixed to reinforce the strength so that it can withstand an external impact such as an earthquake. It is preferable that the carbon nanotubes are mixed with any one of a solid (pellet) form or a liquid dispersion diluted with water, alcohol or an organic solvent. That is, since the carbon nanotubes are made of very fine powder and are volatilized, they are prevented from being volatilized by using pellets or dispersants.

상기 본 발명의 카본 나노튜브나 카본그라파이트는 인장강도와 굴곡강도가 우수한 특징이 있는 반면, 상대적으로 충격강도가 떨어지는 탄소섬유의 특성을 보강한 것이다.The carbon nanotubes and carbon graphite of the present invention are characterized by excellent tensile strength and flexural strength, while reinforcing the characteristics of carbon fibers with relatively low impact strength.

따라서 카본나노튜브나 카본그라파이트의 경우, 혼합량이 너무 적으면 지진으로 인한 충격에 견딜 수 없고, 혼합량이 너무 많으면 원자재 비용을 상승시키는 요인이 되는 문제가 있으므로, 본 발명에서는 중심내압 강화층에 대하여 3~5중량부를 혼합하여 사용하는 것이 바람직하다.Therefore, in the case of carbon nanotubes or carbon graphite, if the amount of the carbon nanotubes is too small, it can not withstand an impact due to an earthquake. If the amount of carbon nanotubes is too large, the cost of raw materials is increased. To 5 parts by weight is preferably used.

상기한 바와 같은 구성을 갖는 본 발명이 비록 한정된 실시예에 의해 설명되었으나, 본 발명은 이것에 의해 한정되지 않으며 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술사상과 아래에 기재될 청구범위의 균등범위 내에서 다양한 수정 및 변형이 가능하다 할 것이다
Although the present invention having been described above has been described with reference to a limited number of embodiments, it is to be understood that the present invention is not limited thereto and that various changes and modifications may be made without departing from the spirit and scope of the present invention by those skilled in the art. Various modifications and variations are possible within the scope of the appended claims.

1 : 표피층 2 : 외부 경질층
3 : 중심내압강화층 4 : 내부 경질층
1: skin layer 2: external hard layer
3: Central pressure strengthening layer 4: Inner hard layer

Claims (5)

표피층(1)은 PVC 100중량부에 대하여, 안정제 3~6중량부, 충격보강제 2~8중량부, 나노화된 조핵제 0.3~3중량부, 흡착제 2~5중량부 및 니트릴 합성고무 10~20중량부, 활제 1~4중량부, 밀도가 1.2 g/mℓ 미만인 이산화티타늄(TiO2)0.5~1.5중량부 및 산화방지제 1~5중량부로 이루어져 있고,
내부(4) 및 외부경질층(2)은 PVC 100중량부에 대하여 안정제 3~6중량부, 충격보강제 7~15중량부, 가공조제 1~3중량부, 활제 1~4중량부, 충진제 5~10중량부로 이루어져 있으며,
중심내압강화층(3)은 PVC 100중량부에 대하여 ABS계수지 10~20중량부, 안정제 4~10중량부, 가공조제 1~3중량부, 활제 0.8~2.5중량부, 카본나노튜브 또는 카본그라파이트 3~5중량부를 포함하여 구성한 것을 특징으로 하는 4중 구조의 폴리염화비닐관.
3 to 6 parts by weight of a stabilizer, 2 to 8 parts by weight of an impact modifier, 0.3 to 3 parts by weight of a nanocarbon nucleating agent, 2 to 5 parts by weight of an adsorbent and 10 to 20 parts by weight of a nitrile synthetic rubber, 1 to 4 parts by weight of a lubricant, 0.5 to 1.5 parts by weight of titanium dioxide (TiO 2 ) having a density of less than 1.2 g / m 2 , and 1 to 5 parts by weight of an antioxidant,
3 to 6 parts by weight of a stabilizer, 7 to 15 parts by weight of an impact modifier, 1 to 3 parts by weight of a processing aid, 1 to 4 parts by weight of a lubricant, and 5 to 5 parts by weight of a filler 5 To 10 parts by weight,
The inner pressure-strengthening layer (3) comprises 10 to 20 parts by weight of an ABS resin, 4 to 10 parts by weight of a stabilizer, 1 to 3 parts by weight of a processing aid, 0.8 to 2.5 parts by weight of a lubricant, And 3 to 5 parts by weight of graphite.
삭제delete 제 1항에 있어서,
상기 산화방지제는 알킬페놀류, 아민류, 퀴논류 중 어느 하나로 이루어진 것을 특징으로 하는 4중 구조의 폴리염화비닐관.
The method according to claim 1,
Wherein the antioxidant is selected from the group consisting of alkyl phenols, amines, and quinones.
삭제delete 제 1항에 있어서,
상기 카본나노튜브는 고형체(펠릿) 형태 또는 물, 알코올, 유기용제에 희석시킨 액상 분산액 중 어느 하나로 이루어진 것을 특징으로 하는 4중 구조의 폴리염화비닐관.
The method according to claim 1,
Wherein the carbon nanotubes are composed of any one of a solid (pellet) form or a liquid dispersion obtained by diluting with water, an alcohol or an organic solvent.
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KR101731912B1 (en) 2016-10-04 2017-05-02 주식회사 제이와이산업 A plastic pipe with the four of structure
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KR101565317B1 (en) * 2015-07-02 2015-11-09 주식회사 제이엔피 Triple a water pipe and sewer pipes at a fraction of the wall
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