KR100193055B1 - Rigid pvc pipe with high impact resistance for water works - Google Patents

Rigid pvc pipe with high impact resistance for water works Download PDF

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KR100193055B1
KR100193055B1 KR1019960016533A KR19960016533A KR100193055B1 KR 100193055 B1 KR100193055 B1 KR 100193055B1 KR 1019960016533 A KR1019960016533 A KR 1019960016533A KR 19960016533 A KR19960016533 A KR 19960016533A KR 100193055 B1 KR100193055 B1 KR 100193055B1
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layer
weight
impact
parts
tube
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KR1019960016533A
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KR970075620A (en
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임정택
최경재
권혁칠
이성우
윤경준
상창업
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이종학
한화종합화학주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/014—Stabilisers against oxidation, heat, light or ozone
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/18—Applications used for pipes

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Laminated Bodies (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

본 발명은 두개의 층으로 구성된 수도용 경질염화비닐관에 관한 것으로, 좀 더 상세하게는 수지종합도가 700∼1300 사이의 폴리염화비닐 수지 100중량부, 시.피.이(CPE)나 엠.비.에스(MBS) 및 에이.비.에스(ABS)로 이루어진 군으로 부터 하나 또는 그 이상 선택된 충격보강제 5∼15중량부, 납(Pb)계 또는 주석(Sn)계 열안정제 0.3∼5중량부, 스테아린산 및/또는 폴리에틸렌 왁스와 같은 활제0∼5중량부, 탄산칼슘 0∼20중량부로 이루어진 충격강도 보강을 위한 내충격층;및 수지종합도가 700∼1300 사이의 폴리염화비닐 수지 100중량부, 시.피.이(CPE), 엠.비.에스(MBS) 및 에이.비.에스(ABS)로 이루어진 군으로 부터 하나 또는 그 이상 선택된 충격보강제 0∼4중량부, 납(Pb)계 또는 주석(Sn)계 열안정제 0.3∼5중량부, 스테아린산 및/또는 폴리에틸렌 왁스와 같은 활제 0∼5중량부, 탄산칼슘을 0∼20중량부로 이루어진 인장강도 보강을 위한 경질층의 2층구조로 이루어진 수도용 내충격 경질염화비닐관에 관한 것이다. 상기 관은 충격강도와 인장강도가 동시에 우수하며, 구조가 간단한 공압출 다이를 사용함으로써 작업성이 높고, 내층격층의 위치에 제한이 없으므로 필요에 따라 관의 층구조를 선택하여 제조할 수 있는 잇점이 있다.The present invention relates to a hard polyvinyl chloride pipe composed of two layers, and more particularly, to 100 parts by weight of polyvinyl chloride resin having a resin synthesis degree of 700 to 1300, CPE or M.B. 5-15 parts by weight of one or more impact modifiers selected from the group consisting of MBS and ABS, and 0.3-5 parts by weight of lead (Pb) or tin (Sn) -based heat stabilizers. , Impact layer for reinforcing the impact strength consisting of 0 to 5 parts by weight of a lubricant such as stearic acid and / or polyethylene wax, 0 to 20 parts by weight of calcium carbonate; and 100 parts by weight of polyvinyl chloride resin having a resin synthesis degree of 700 to 1300, 0-4 parts by weight of one or more impact modifiers selected from the group consisting of CPE, MBS and MBS, Pb-based or 0.3-5 parts by weight of tin (Sn) -based heat stabilizer, 0-5 parts by weight of lubricant such as stearic acid and / or polyethylene wax, tan It relates to a water-resistant hard vinyl chloride tube for water consisting of a two-layer structure of a hard layer for reinforcing tensile strength consisting of 0 to 20 parts by weight of calcium acid. The tube is excellent in impact strength and tensile strength at the same time, the workability is high by using a simple coextrusion die structure, there is no restriction on the position of the inner layer layer can be manufactured by selecting the layer structure of the tube as needed There is an advantage.

Description

수도용 내충격 경질염화비닐판Impact resistant hard vinyl chloride plate for water

본 발명은 두개의 층으로 구성된 수도용 경질염화 비닐관에 관한 것으로, 좀 더 상세하게는 두개의 압출기에서 용융 혼련된 수지를 2층 원형구조로 성형할 수 있는 2층 공압출다이 (2 Layer Coextrusion Dies)를 이용하여, 충격강도를 높이기 위한 내충격층과 인장강도를 높이기 위한 경질층의 2층구조로 공압출시켜 관을 제조함으로써 충격강도와 인장강도가 동시에 우수하고, 구조가 간단한 공압출다이를 이용함으로써 작업성이 높고, 층별 두깨조절이 용이하며, 내충격층의 위치에 제한이 없으므로 필요에 따라 관의 층구조를 선택하여 생산이 가능한 장점이 있는 수도용 내충격 경질염화비닐관에 관한 것이다.The present invention relates to a two-layer hard vinyl chloride pipe for water, and more particularly, a two-layer coextrusion die (2 layer coextrusion dies) capable of molding a melt-kneaded resin in a two-layer circular structure in two extruders. Co-extruded into a two-layer structure of impact resistant layer to increase impact strength and hard layer to increase tensile strength by using a tube to produce a tube by using a co-extrusion die that has excellent impact strength and tensile strength at the same time and has a simple structure. High workability, easy to control the thickness of each floor, there is no restriction on the location of the impact layer relates to the impact-resistant hard vinyl chloride tube for water with the advantage that can be produced by selecting the layer structure of the tube as needed.

현재 수도관으로는 강관과 주철관이 주로 사용되고 경질염화비닐관도 일부 사용되고 있다. 강관과 주철관은 내식성이 약해 시공후 부식으로 인한 스케일 및 녹 발생 등으로 인해 유량이 감소하고 수도물의 오염이 발생되며, 무게가 무거워 운반 및 시공이 불편한 단점이 있다. 그러나, 이러한 관들은 상술한 문제점들에도 불구하고 충격에 강하다는 장점을 가지고 있기 때문에 계속 사용되고 있는 실정이다.Currently, steel pipes and cast iron pipes are mainly used as water pipes, and some hard vinyl chloride pipes are also used. Steel pipes and cast iron pipes are weak in corrosion resistance, resulting in scale and rust caused by corrosion after construction, resulting in reduced flow rate, contamination of tap water, and heavy weight, which are inconvenient for transport and construction. However, these tubes continue to be used because they have the advantage of being impact resistant despite the above-mentioned problems.

한편, 경질염화비닐관은 내약품성과 내식성이 강하고, 위생성, 경량성, 시공성, 경제성 등의 많은 장점들을 가지고 있으나 상기의 타 배관재에 비해 충격강도가 현저하게 떨어져 강한 내외력이 작용하는 환경에는 부적합한 단점이 있다.On the other hand, rigid vinyl chloride pipe has many advantages such as strong chemical resistance and corrosion resistance, hygienicity, light weight, workability, and economical efficiency, but it is not suitable for the environment where strong internal and external forces work due to the significantly lower impact strength than other pipe materials. There is this.

이러한 수도용 경질염화비닐관의 단점인 충격강도를 향상시키기 위해 종래에는 단층관 구조인 기존의 경질염화비닐관에 충격보강제 등의 첨가제를 첨가하여 충격강도를 개량시키는 방법이 있으나, 이경우 충격보강제 등의 첨가제 함량을 증가시킬수록 충격강도는 올라가지만 인장강도가 낮아지고, 반대로 충격보강제 등의 첨가제 함량을 감소시킬수록 인장강도는 올라가지만 충격강도가 급격히 저하되므로 획기적인 방법의 개선없이는 충격강도와 인장강도를 동시에 만족시키기가 매우 어렵다. 그리고, 고가인 충격보강제를 관의 전층에 사용함으로써 제조단가가 올라가고 충격보강제 사용으로 인해 압출부하가 과도하게 상승하는 등 가공이 어려운 단점이 있다.In order to improve the impact strength, which is a disadvantage of the hard vinyl chloride pipe for water, conventionally, there is a method of improving the impact strength by adding an additive such as an impact modifier to the existing hard vinyl chloride tube having a single layer structure, but in this case, the additive content of the impact modifier, etc. The higher the, the higher the impact strength but the lower the tensile strength. On the contrary, as the additive content of the impact modifier is decreased, the tensile strength increases, but the impact strength drops sharply, thus satisfying both the impact strength and the tensile strength simultaneously without a breakthrough. Very difficult to make In addition, by using an expensive impact modifier in the entire layer of the pipe, the manufacturing cost goes up, and the extrusion load is excessively increased due to the use of the impact modifier, such that processing is difficult.

또한, 공압출공법을 이용하여 충격강도를 향상시킨 대한민국 실용신안 제 95-5495호에서는 외부의 내충격 경질층과 내부의 내충격 경질층 및 중심경질층의 3층 구조로 수도용 경질염화비닐관을 제조하여 충격강도와 인장강도를 개선시켰으나, 대한민국 공개특허 제 87-5778호 또는 발포 중심층을 갖는 공압출 비닐관 (KS M3413-1987)의 제조에 사용되는 공압출 다이와 유사한 3층 공압출다이 (3 Layer Coextrusion Dies)를 사용함으로써 다이의 구조가 복잡하여 관의 제조시 3개층의 두께조절이 용이하지 않은 단점이 있다.In addition, Korean Utility Model No. 95-5495, which improved the impact strength by using the coextrusion method, manufactured a water-based hard vinyl chloride pipe by using a three-layer structure of an external impact hard layer, an internal impact hard layer, and a central hard layer. Three layer coextrusion dies, similar to the coextrusion dies used in the manufacture of Korean Patent Publication No. 87-5778 or co-extruded vinyl tubes (KS M3413-1987) having a foamed core layer, although improved in strength and tensile strength. By using), the structure of the die is complicated, the thickness of the three layers in the manufacture of the tube is not easy to control the disadvantage.

다시 설명하면, 수도용 경질 염화비닐관(KS M 3401)의 제조규격은 관의 직경에 따라 호칭지름을 13∼300까지 규정하고 있는데, 상기 실용신안 제 95-5495호에서 제시한 외층의 내충격경질층과 중간층의 중심경질층 및 내층의 내충격경질층의 두께비율을 1 : 2 : 1∼1: 3 : 1로 관을 제조할 경우 , 호칭지름이 13에서 20인 관을 예를 들면, 호칭지름 13은 규격두께가 2.5㎜이므로 각층의 두께가 0.625 : 1.25 : 0.625 ∼ 0.5 : 1.5 : 0.5(단위: ㎜)가 되고, 호칭지름 16과20은 규격두께가 3.0㎜이므로 각층의 두께가 0.75 : 1.5 : 0.75 ∼ 0.6 : 1.8 : 0.6(단위: ㎜)이 되도록 제조해야 하지만, 외층과 내층의 내충격경질층의 두께가 매우 얇아 각층을 3 층으로 공압출시키기가 어렵고, 생산이 가능하더라도 두께편차 조절이 어려워 생산성이 떨어지는 단점이 있다. 또한, 폴리염화비닐수지와 충격보강제 등의 첨가제 종류 및 함량에 따라 관의 충격강도와 인장강도 등의 물성이 현격하게 변화됨에도 불구하고,상기 실용신안에서는 관의 물성에 직접적인 영향을 미치는 첨가제의 종류와 함량에 대해 언급하고 있지 않다.In other words, the manufacturing standard of hard vinyl chloride pipe (KS M 3401) for water uses a nominal diameter of 13 to 300 depending on the diameter of the pipe, and the impact resistant hard layer of the outer layer of the utility model No. 95-5495. In the case where the thickness ratio of the central hard layer of the intermediate layer and the impact hard layer of the inner layer is 1: 2: 1: 1-3: 1, a tube having a nominal diameter of 13 to 20, for example, has a nominal diameter of 13 Since the standard thickness is 2.5 mm, the thickness of each layer is 0.625: 1.25: 0.625-0.5: 1.5: 0.5 (unit: mm), and the nominal diameters 16 and 20 are 3.0 mm, so the thickness of each layer is 0.75: 1.5: 0.75 It should be manufactured to be 0.6: 1.8: 0.6 (unit: ㎜), but it is difficult to co-extrude each layer into 3 layers because the thickness of the impact hard layer of outer layer and inner layer is very thin, and it is difficult to control thickness deviation even if production is possible. This has the disadvantage of falling. In addition, although the physical properties such as impact strength and tensile strength of the tube is significantly changed according to the type and content of additives such as polyvinyl chloride resin and impact modifier, the type of additive that directly affects the properties of the pipe in the utility model There is no mention of and content.

아울러, 관의 구조면에서도 충격강도 향상을 목적으로 하는 내충격층의 위치를 외층과 내층으로 고정시킨 3층관 구조로 제한하고 있으므로 내충격층의 위치에 구애받는 단점이 있다.In addition, since the structure of the pipe is limited to the position of the impact layer for the purpose of improving the impact strength to the three-layer pipe structure fixed to the outer layer and the inner layer, there is a disadvantage that is limited to the position of the impact layer.

전술한 바와 같이, 종래의 기술중 단층관 구조는 충격보강제 첨가에 따라 압출부하가 상승하여 가공성이 떨어지며, 충격강도와 인장강도를 동시에 만족시키기가 어려운 단점이 있고, 상기 실용신안 제 95-5495호의 3층관은 관의 제조시에 사용하는 3층 공압출다이의 구조가 복잡하여 소구경관의 제조시에 층별 두께조절이 어렵고, 생산성이 떨어지며, 다이내의 유로가 3층으로 분리됨에 따라 다이 내의 압력이 상승하여 제조 동력비가 증가하고, 경우에 따라서는 기존 압출기를 압출성능이 큰 다른 압출기로 교체해야 하는 단점이 있다.As described above, the single-layer pipe structure of the prior art has a disadvantage in that the extrusion load increases with addition of the impact modifier, resulting in poor workability, and it is difficult to simultaneously satisfy the impact strength and the tensile strength, and according to Utility Model No. 95-5495. The three-layer pipe has a complicated structure of the three-layer coextrusion die used in the manufacture of the pipe, which makes it difficult to control the thickness of each layer during the manufacture of the small-diameter pipe, and the productivity is low. As the flow path in the die is divided into three layers, the pressure in the die is increased. This raises the manufacturing power ratio, and in some cases, there is a disadvantage in that the existing extruder needs to be replaced with another extruder having high extrusion performance.

이와 같은 문제점을 해결하기 위해 본 발명자들은 두개의 압출기에서 용융, 혼련된 수지를 2층 원형구조로 성형할 수 있는 2층 공압출다이를 이용하여, 충격강도를 높인 염화비닐 재질로된 내충격층과 인장강도를 높인 염화비닐 재질로된 경질층의 2층 구조로 각 층의 기능을 분리, 공압출시켜 수도용 내충격 경질염화비닐관을 제조함으로써 각 층이 갖는 최대 장점인 충격강도와 인장강도가 동시에 우수하면서도, 기존 압출기의 이용이 가능하고 가공성 저하가 없으며 소구경관 및 대구경관의 제조에서 층별 두께조절이 용이하고 내충격층의 위치에 제한이 없으므로 필요에 따라 관의 층구조를 선택하여 생산이 가능한 수도용 내충격 경질염화비닐관을 제조할 수 있었다.In order to solve this problem, the present inventors use a two-layer coextrusion die that can form a melted and kneaded resin in a two-layered circular structure in two extruders, and an impact resistant layer made of vinyl chloride material having high impact strength; The two-layer structure of the rigid layer made of vinyl chloride with high tensile strength separates and co-extrudes the functions of each layer to manufacture impact-resistant hard vinyl chloride pipes for water supply, thereby providing excellent impact strength and tensile strength at the same time. It is possible to use the existing extruder, there is no deterioration in processability, and it is easy to control the thickness of each layer in the manufacture of small diameter tube and large diameter tube, and there is no limitation on the location of impact layer. The vinyl chloride tube could be manufactured.

따라서, 본 발명의 목적은 충격강도와 인장강도가 동시에 우수하고, 구조가 간단한 공압출다이를 이용함으로써 작업성이 높고 층별 두께조절이 용이하며, 내충격층의 위치에 제한이 없으므로 필요에 따라 관의 층구조를 선택하여 생산이 가능한 장점이 있는 수도용 내충격 경질염화비닐관을 제공하는데 있다.Accordingly, an object of the present invention is to provide excellent workability and easy adjustment of layer thickness by using a coextrusion die which has excellent impact strength and tensile strength at the same time, and has a simple structure. It is to provide a shock-resistant hard vinyl chloride tube for water with the advantage that the production can be selected by selecting a layer structure.

상기 목적을 달성하기 위한 본 발명의 수도용 내충격 경질염화비닐관은 수지중합도가 700∼1300사이인 폴리염화비닐 수지 100중량부, 시.피.이(CPE)나 엠.비.에스(MBS) 및 에이.비.에스(ABS)로 이루어진 군으로 부터 하나 또는 그 이상 선택된 충격보강제 5∼15중량부, 납(Pb)계 또는 주석(Sn)계 열안정제 0.3∼5중량부, 스테아린산 및/또는 폴리에틸렌왁스와 같은 활제 0∼5중량부, 탄산칼슘 0∼20중량부로 이루어진 충격강도 보강을 위한 내충격층 및 수지중합도가 700∼1300사이인 풀리염화비닐 수지 100중량부, 시.피.이(CPE), 엠.비.에스(MBS) 및 에이.비.에스(ABS)로 이루어진 군으로 부터 하나 또는 그 이상 선택된 충격보강제 0∼4중량부, 납(Pb)계 또는 주석(Sn)계 열안정제 0.3∼5중량부, 스테아린산 및/또는 폴리에틸렌왁스와 같은 활제 0∼5중량부, 탄산칼슘을 0∼20중량부로 이루어진 인장강도 보강을 위한 결질층의 2층구조로 이루어진다.Water resistant hard vinyl chloride tube of the present invention for achieving the above object is 100 parts by weight of polyvinyl chloride resin having a resin polymerization degree of 700 to 1300, C. P. (CPE) or M.B. (MBS) and A. 5-15 parts by weight of one or more impact modifiers selected from the group consisting of ABS, 0.3-5 parts by weight of lead (Pb) or tin (Sn) -based heat stabilizers, stearic acid and / or polyethylene wax An impact layer for reinforcing the impact strength consisting of 0 to 5 parts by weight of a lubricant, 0 to 20 parts by weight of calcium carbonate, and 100 parts by weight of a polyvinyl chloride resin having a resin polymerization degree of 700 to 1300, CPE, 0-4 parts by weight of one or more impact modifiers selected from the group consisting of M.B.S. (MBS) and A.B.S. (ABS), and Pb-based or tin-based thermal stabilizers 0.3-. 5 parts by weight, 0-5 parts by weight of lubricant such as stearic acid and / or polyethylene wax, 0-20 parts by weight of calcium carbonate It comprises a two-layer structure of the grain jilcheung for tensile strength reinforcement consisting of.

이하 본 발명을 좀 더 구체적으로 살펴보면 다음과 같다.Looking at the present invention in more detail as follows.

본 발명에 따르면, 상기 목적을 달성하기 위해서는 2층 공압출 다이의 이용이 필요하고, 적절한 폴리염화비닐 수지의 중합도와 첨가제들의 종류를 선정하여 물성과 가공성이 최적인 첨가제 함량의 결정이 필수적이다. 그리고, 관의 충격강도와 인장강도를 고려한 내충격층의 위치와, 내충격층과 경질층의 두께비율의 선정이 필요하다.According to the present invention, in order to achieve the above object, it is necessary to use a two-layer coextrusion die, and it is necessary to determine an additive content having optimal physical properties and processability by selecting a polymerization degree and a kind of additives of an appropriate polyvinyl chloride resin. In addition, it is necessary to select the position of the impact resistant layer and the thickness ratio of the impact resistant layer and the hard layer in consideration of the impact strength and the tensile strength of the tube.

본 발명에서 내충격층은 수지중합도가 700∼1300 사이인 폴리염화비닐수지를 단독 또는 혼합하여 100중량부로 하고, 충격보강제 함량은 5∼15중량부, 바람직하게는 수지중합도가 800∼1100이고, 충격보강제의 함량은 6∼12중량부의 조건을 갖추어야 한다. 또한, 가공중 탄화현상을 방지하기 위해 0.3∼5중량부의 열안정제의 처방이 필수적이며, 충격보강제사용에 따라 압출부하 또는 압출기내 발열 등이 과도하게 발생하여 가공성이 급격히 떨어질 경우를 대비하여 0∼5중량부의 외부활제의 처방도 필요하다.In the present invention, the impact resistant layer is 100 parts by weight of polyvinyl chloride resin having a resin polymerization degree of 700 to 1300 alone or mixed, and the content of the impact modifier is 5 to 15 parts by weight, and preferably the resin polymerization degree is 800 to 1100. The content of the reinforcing agent should be 6-12 parts by weight. In addition, in order to prevent carbonization during processing, it is necessary to prescribe 0.3 to 5 parts by weight of a heat stabilizer, and 0 ~ in preparation for a sudden drop in workability due to excessive generation of extruded load or exothermic heat in the extruder according to the use of an impact modifier. A prescription of 5 parts by weight of external lubricant is also required.

경질층 역시 폴리염화비닐 수지의 중합도가 700∼1300 사이인 수지를 단독 또는 혼합하여 100중량부로 하고 충격보강제 함량은 0∼4중량부의 조건을 만족시켜야 한다. 또한, 열안정성을 위해 0.3∼5중량부의 열안젱제의 처방이 필수적이며, 수지의 중합도가 증가되어 가공성이 떨어지면 0∼5중량부의 외보활제의 처방이 필요하다.The hard layer should also be 100 parts by weight of a polyvinyl chloride resin having a polymerization degree of 700 to 1300 alone or mixed, and the content of the impact modifier should be 0 to 4 parts by weight. In addition, the formulation of 0.3 to 5 parts by weight of a thermal stabilizer is essential for thermal stability, and 0 to 5 parts by weight of an external lubricating agent is required if the polymerization degree of the resin is increased and workability is decreased.

또한, 2층 고압출 다이는 두개의 압출기에서 용융, 혼련된 수지를 2층 원형구조로 성형할 수 있는 것이어야 하며, 다이내에서 외층과 내층의 유로 단면적비가 3 : 7 ∼7 : 3 사이이고, 두께조절을 위해 터피도 (torpedo)는 끝(tip)부분의 교체가 자유로우며 멘드릴(mandrel)은 상하좌우 방향으로 이동이 가능한 것이어야 한다.In addition, the two-layer high-pressure die is to be capable of molding the melted and kneaded resin in a two-layer circular structure in two extruders, and the flow path cross-sectional area ratio between the outer layer and the inner layer in the die is between 3: 7 and 7: 3. In order to control the thickness, the torpedo should be free to replace the tip and the mandrel should be able to move up, down, left and right.

이렇게 선택된 수지와 첨가제는 배합 및 혼련공정을 거쳐 2층 공압출다이를 갖는 공압출기를 통해 2층으로 공압출시킴으로써 수도용 내충격 경질염화비닐관을 제조한다.The resin and the additive thus selected are coextruded into two layers through a coextruder having a two-layer coextrusion die through a mixing and kneading process to produce a water resistant hard vinyl chloride tube.

한편, 본 발명에서는 상기 관을 엠.비.에스(MBS: Methylmetacrylate Butadiene Styrene), 시.피.이(CPE: Chlorinated Ployethylene) 및 에이.비.에스(ABS: Acrylonitrile Butadiene Styrene)으로 이루어진 군으로 부터 하나 또는 그 이상 선택된 충격보강제를 함유시켜 충격강도가 우수한 내충격층과, 폴리염화비닐의 중합도를 높이거나 첨가제의 사용을 최소화하여 인장강도를 향상시킨 경질층의 2층관 구조로 구성하여, 관의 구조가 외층이 내충격층이고, 내충이 경질층이거나, 반대로 관의 외층이 경질층이고 내층이 내충격층이 되오록 2층 공압출 다이를 이용하여 각층의 가능을 분리, 압출시킴으로써, 충격보강제 사용에 따른 인장강도의 저하를 방지하여 충격강도와 인장강도가 동시에 우수하고 압출가공성면에서도 장점을 가지는 수도용 내충격 경질 염화비닐관을 제공한다.On the other hand, in the present invention, the tube is M. B. (Methylmetacrylate Butadiene Styrene), C. C. (Chlorinated Ployethylene) and A. B. (ABS: Acrylonitrile Butadiene Styrene) Consists of a two-layer pipe structure consisting of an impact resistant layer having one or more selected impact modifiers and excellent impact strength, and a hard layer having a high tensile strength by increasing the polymerization degree of polyvinyl chloride or minimizing the use of additives. The outer layer is an impact resistant layer, the inner layer is a hard layer, or conversely, the outer layer of the tube is a hard layer and the inner layer is an impact layer by separating and extruding the possibility of each layer by using a two-layer coextrusion die. The present invention provides an impact resistant hard vinyl chloride pipe for water which has excellent impact strength and tensile strength at the same time and has advantages in extrusion processability by preventing a decrease in tensile strength.

본 발명에 따르면, 폴리염화비닐은 수지중합도가 증가할수록 기계적물성은 증가하지만, 수지의 용융성과 용융흐름성이 저하되어 압출가공성이 떨어진다. 따라서, 압출가공에 적절한 수지중합도와 가공성 개선을 위한 활제의 첨가가 필요한데, 수지중합도가 700∼1000으로 비교적 작을때는 활제인 스테아린산(Stearic acid)과 폴리에틸렌왁스(Polyethylene wax)를 각각 단독 또는 혼합하여 0∼1중량부 처방해 주는 것이 바람직하고, 수지중합도가 1100∼1300으로 비교적 클때는 활제의 함량을 0.5∼5중량부로 처방해 주는 것이 바람직하다.According to the present invention, the polyvinyl chloride increases the mechanical properties as the degree of resin polymerization increases, but the meltability and melt flowability of the resin decreases, so that the extrusion processability is poor. Therefore, it is necessary to add a suitable resin polymerization and a lubricant for improving workability. When the resin polymerization degree is relatively small (700 to 1000), a lubricant or stearic acid (Stearic acid) and polyethylene wax, respectively, may be used alone or mixed. It is preferable to prescribe -1 weight part, and when resin polymerization degree is comparatively large with 1100-1300, it is preferable to prescribe the content of a lubricating agent in 0.5-5 weight part.

내충격층은 상기 폴리염화비닐 수지에 충격강도 보강을 위해 시.피.이(CPE), 엠.비.에스(MBS) 또는 에이.비.에스(ABS)등의 충격보강제를 단독 또는 혼합하여 사용하는데 충격보강제의 함량이 감소할수록 인장강도는 올라가지만 충격강도가 낮아지고, 충격보강제의 함량이 증가할수록 충격강도는 상승되지만 인장강도와 가공성이 급격히 나빠지므로 충격보강제 함량은 5∼15중량부가 바람직하다. 그리고, 충격보강제 사용에 따라 용융흐름성 저하, 압출부하 상승, 압출기내의 발열 등이 발생하여 압출가공성이 떨어지므로 활제인 스테아린산과 폴리에틸렌왁스 약 1중량부를 추가 사용하는 것이 바람직하다. 그러나, 수지중합도와 충격보강제 함량 및 활제의 함량이 적절한 조건이 되었다 하더라도 폴리염화미닐 수지의 특성상 가공중 가해지는 열이나 전단응력 등에 쉽게 열분해가 발생하므로 열안정성이 우수한 납(Pb)계 또는 주석(Sn)계 열안정제를 0,3∼5중량부 정도가 처방해야 한다. 또한, 가공시 사이징(Sizing)과 원가절감을 위해 탄산칼슘을 0∼20중량부 정도 처방하는 것도 바람직하다.The impact resistant layer is used alone or in combination with an impact modifier such as CPE, M.B.S. (MBS) or A.B.S. (ABS) to reinforce the impact strength on the polyvinyl chloride resin. However, as the content of the impact modifier decreases, the tensile strength increases, but the impact strength decreases. As the content of the impact modifier increases, the impact strength increases, but the tensile strength and workability decrease rapidly, so the content of the impact modifier is 5 to 15 parts by weight. . In addition, it is preferable to use about 1 part by weight of the stearic acid and polyethylene wax, which are lubricants, because the melt flow property decreases, the extrusion load rises, the exothermic heat occurs in the extruder, and the extrusion processability decreases with the use of the impact modifier. However, even though the polymer polymerization degree, impact modifier content, and lubricant content are suitable conditions, the thermal decomposition of the polyminyl chloride resin can easily cause thermal decomposition due to heat or shear stress. Sn) -based thermal stabilizer should be prescribed about 0,3 to 5 parts by weight. It is also desirable to prescribe about 0 to 20 parts by weight of calcium carbonate for sizing and cost reduction during processing.

경질층은 상기 폴리염화비닐 수지에 인장강도 보강을 위해 첨가제의 사용량을 최소화하여 시.피.이(CPE), 엠.비.에스(MBS)또는 에이.비.에스(ABS) 등의 충격보강제를 각각 단독 또는 혼합하여 0∼4중량부 처방하고, 열안정성을위해 납(Pb)계 또는 주석(Sn)계 열안정제를 0.3∼5중량부정도 처방한다. 또한, 사이징과 원가절감을 위해 탄산칼슘을 0∼20중량부 정도를 처방하는 것이 바람직하다.The hard layer minimizes the use of additives to reinforce the tensile strength of the polyvinyl chloride resin, and thus impact modifiers such as CPE, M.B.S., MBS or ABS. 0-4 parts by weight alone or in combination, and 0.3-5 parts by weight of lead (Pb) or tin (Sn) -based heat stabilizer. In addition, it is preferable to prescribe about 0 to 20 parts by weight of calcium carbonate for sizing and cost reduction.

상기 내충격층과 경질층의 배합에서 관의 위생성의 향상을 목적으로, 내충격층이 관의 내층이 될때는 내충격층 배합에서 열안정제를 주석(Sn)계 무독 열안정제를 사용하고, 반대로 경질층이 관의 내층이 될때는 경질층 배합의 열안정제를 주석(Sn)계 무독 열안정제를 사용하는 것이 바람직하다.For the purpose of improving the sanitary properties of the tube in the combination of the impact resistant layer and the hard layer, when the impact layer becomes the inner layer of the tube, a thermal stabilizer is used as a tin (Sn) non-toxic heat stabilizer in the impact layer mixture, on the contrary, the hard layer When it becomes an inner layer of a tube, it is preferable to use a tin (Sn) type non-toxic heat stabilizer as a heat stabilizer of hard-layer mixing.

본 발명의 수도용 내충격 경질염화비닐관에서 층구조는 관의 외층이 내충격층이고, 내층이 경질층이거나 반대로 관의 외층이 경질층이고 내층이 내충격층이 되도록 2층관 구조로 구성되며, 내충격층과 경질층의 두께비율은 내충격층의 두께가 증가할수록 충격강도는 증가하지만, 인장강도가 낮아지고 경질층의 두께가 증가할수록 인장강도는 증가하지만 충격강도가 낮아지므로 이를 해결하기 위해 내 충격층 : 경질층의 두께비율을 3 : 7 ∼ 7 : 3이 되도록 구성하는 것이 바람직하다.In the impact resistant hard vinyl chloride pipe for water of the present invention, the layer structure is composed of a two-layered pipe structure such that the outer layer of the tube is an impact layer, and the inner layer is a hard layer or, conversely, the outer layer of the tube is a hard layer, and the inner layer is an impact layer, and the impact layer and the hard layer The thickness ratio of the layer increases the impact strength as the impact layer increases, but the tensile strength decreases and the tensile strength increases as the thickness of the hard layer increases, but the impact strength decreases. It is preferable to comprise so that the thickness ratio of 3 may be 7: 7-7: 3.

상기와 같은 조성과 구조로 구성된 본 발명에 따른 수도용 내충격 경질염화비닐관은 외층과 내층의 재질물성을 달리하여 줌으로써 외부로부터 충격이 가해질때 충격파가 물성이 다른 재질을 통과하면서 충격파의 반사, 굴절의 원리에 따라 분산되거나 상쇄되어 수도관 전체를 단일재질의 단층으로 구성하는 경우와 비교할 수 없는 높은 내충격을 가질 뿐 아니라 인장강도도 우수하다. 그리고, 3층관에 비해서도 물성이 동등이상으로 우수할 뿐만 아니라 공압출 다이의 구조가 간단하여 압출 작업성이 우수하고 내충격층의 위치에 제한이 없으므로 사용자의 요구 특성에 따라 관의 층구조를 선택하여 제조할 수 있는 장점이 있다.Water resistant hard vinyl chloride tube according to the present invention composed of the composition and structure as described above by changing the material properties of the outer layer and the inner layer when the shock is applied from the outside while the shock wave passes through the material with different properties, the principle of reflection and refraction of the shock wave It is dispersed or offset according to the present invention, and has a high impact resistance as well as excellent tensile strength as compared with the case where the whole water pipe is composed of a single layer of a single material. In addition, the physical properties of the three-layer pipe are not less than the same, but the structure of the coextrusion die is simple, so the extrusion workability is excellent and the location of the impact layer is not limited. There is an advantage to manufacture.

이하 실시예를 통하여 본 발명을 좀 더 구체적으로 살펴보지만, 하기예에 본 발명의 범주가 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited to the following examples.

[실시예 1∼6]EXAMPLES 1-6

본 실시예에 사용된 폴리염화비닐은 수지중합도가 1000인 한화종합화학의 P-1000을 사용하였고, 열안정제는 선경화성의 납(Pb)계 열안정제인 SK-205P와 Morton thioko1사의 주석(Sn)계 열안정제인 LS-203S를 사용하였다. 충격보강제는 Kureha chemical의 MBS계 충격보강제인 BTA-751을 사용하였고, 활제는 라이온케미칼의 폴리에스틸렌왁스인 LC-102N과 단석산업의 스테아린산을 사용하였다. 탄산칼슘은 한국 OMYA의 Omyalite 95T를 사용하였다.The polyvinyl chloride used in this example was P-1000 of Hanwha General Chemical with a resin polymerization degree of 1000, and the thermal stabilizer was a lead (Pb) thermal stabilizer, SK-205P and tin (Sn) of Morton thioko1. ) LS-203S, a thermal stabilizer, was used. The impact modifier was BTA-751, Kureha Chemical's MBS impact modifier, and LC-102N, a polyester wax of Lion Chemical, and stearic acid from Danseok. Calcium carbonate was used as Omyalite 95T from OMYA, Korea.

본 실시예의 물성측정 시험에 사용한 2층관은 두개의 압출기에서 용융 혼련된 수지를 2층 원형구조로 성형할 수 있는 2층 공압출 다이를 이용하여 층의 구조가 외층이 내충격층이고 내층이 경질층일때와 반대로 외층이 경질층이고 내층이 내충격층이 되도록 제조하였고, 내충격층과 경질층의 두께비율은 4 : 6, 5 : 5, 6 : 4가 되도록 KS M3401(수도용 경질염화비닐관)에 규정된 호칭 100의 수도관을 제조하였다.The two-layer pipe used in the physical property test of the present embodiment is a two-layer coextrusion die that can mold the melt-kneaded resin in two extruders into a two-layer circular structure, and the layer structure is the impact layer and the inner layer is the hard layer. Contrary to the case, the outer layer is a hard layer and the inner layer is manufactured to be an impact layer, and the thickness ratio between the impact layer and the hard layer is 4: 6, 5: 5, 6: 4, and is defined in KS M3401 (hard vinyl chloride tube for water). A water pipe of nominal 100 was prepared.

본 실험에 사용한 각 압출기의 크기는 실린더 직경이 80㎜, 85㎜이며, 가공온도는 각 압출기의 실린더 온도를 225∼140℃, 다이온도를 160∼200℃가 되도록 조절하였다.The size of each extruder used for this experiment was 80 mm and 85 mm in cylinder diameter, and the processing temperature was adjusted so that the cylinder temperature of each extruder might be 225-140 degreeC, and the die temperature might be 160-200 degreeC.

본 실험에 사용한 각층의 상세한 배합은 하기 표 1과 같으며, 제조된 수도관에 대한 물성을 확인하기 위하여 KS M3401(수도용 경질염화비닐관)에 규정한 방법으로 인장강도 및 충격강도 시험을 실시하여, 그 결과를 하기 표 2에 기재하였다.The detailed formulation of each layer used in this experiment is shown in Table 1 below, and the tensile strength and impact strength test was carried out by the method specified in KS M3401 (hard vinyl chloride pipe for water) in order to confirm the physical properties of the manufactured water pipe, The results are shown in Table 2 below.

[비교예 1]Comparative Example 1

기존에 시판중인 단일구조의 단층관(수도용 경질염화비닐관, VP)에 충격강도 개선을 위해 MBS계 충격보강제인 BTA-751을 8중량부 첨가하여 제조한 관이다. 제조된 수도관에 대한 물성을 확인하기 위하여 KS M 3401(수도용 경질염화비닐관)에 규정한 방법으로 인장강도 및 충격강도 시험을 실시하여, 그 결과를 하기 표 2에 기재하였다.It is a tube manufactured by adding 8 parts by weight of BTA-751, an MBS-based impact modifier, to improve the impact strength to a single-layer tube (waterworks hard vinyl chloride pipe, VP) that is commercially available. In order to confirm the physical properties of the manufactured water pipes, the tensile strength and impact strength tests were carried out by the method specified in KS M 3401 (hard vinyl chloride pipe for water), and the results are shown in Table 2 below.

[비교예 2]Comparative Example 2

내층과 외층이 내충격층이고, 중심층이 경질층인 3층 구조로 제조한 내충격 3중관이며, 작업성 비교를 위해 발포중심층을 가지는 공압출비닐관 제조에 사용되는 공압출 다이를 내충격 3중관 생산에 적합하도록 수정, 제작하여 사용함으로써 그 작업성을 비교하였다. 제조된 수도관에 대한 물성을 확인하기 위하여 KS M3401(수도용 경질염화비닐관)에 규정한 방법으로 인장강도 및 충격강도 시험을 실시하여, 그 결과를 하기 표 2에 기재하였다.Production of impact-resistant triple tubes of co-extruded dies used in the manufacture of co-extruded vinyl tubes having a foam-core layer for comparison of workability. The workability was compared by modifying, fabricating, and using the product to suit the requirements. In order to confirm the physical properties of the manufactured water pipes, the tensile strength and impact strength tests were conducted by the method specified in KS M3401 (hard vinyl chloride pipe for water), and the results are shown in Table 2 below.

실: 실시예, 비: 비교예, 내층: 내충격층, 경층: 경질층Thread: Example, ratio: comparative example, inner layer: impact layer, hard layer: hard layer

상기 표 2로 부터, 비교예 1은 충격보강제 첨가에 따른 압출부하 상승으로 가공성(작업성)이 떨어지고, 인장강도와 충격강도도 실시예 1∼6과 비교할때 현격히 떨어짐을 알 수 있다. 비교예 2는 충격강도와 인장강도 등의 물성은 실시예 1∼6과 유사 수준이지만, 다이 구조가 복잡하여 작업성이 떨어지고 각층의 두께편차 관리가 어려움을 알 수 있다. 반면에, 실시예 1∼6은 내충격층의 위치가 외층이든 또는 내층이든 위치에 관계없이 충격강도와 인장강도가 우수하다.From Table 2, Comparative Example 1 can be seen that the workability (workability) is reduced due to the increase in the extrusion load according to the addition of the impact modifier, the tensile strength and impact strength is also significantly reduced compared to Examples 1 to 6. In Comparative Example 2, physical properties such as impact strength and tensile strength are similar to those of Examples 1 to 6, but the die structure is complicated, resulting in poor workability and difficulty in managing thickness deviation of each layer. On the other hand, Examples 1 to 6 are excellent in impact strength and tensile strength regardless of the position of the impact layer is the outer layer or the inner layer.

한편, 실시예 1∼6에서 내충격층과 경질층의 두께비율은 경질층을 두껍게 할수록 인장강도가 높아지고, 내충격층을 두껍게 할수록 인장강도가 떨어짐을 알 수 있다. 또한, 공압출 다이의 구조가 간단하며 작업성이 높고, 층별 두께조절이 용이하며 내충격층의 위치에 제한이 없으므로 필요함에 따라 관의 층구조를 선택하여 제조할 수 있는 장점이 있다.On the other hand, in Examples 1 to 6 it can be seen that the thickness ratio of the impact resistant layer and the hard layer is higher in tensile strength as the hard layer is thicker, and the tensile strength is lower as the impact layer is thicker. In addition, the structure of the co-extrusion die is simple, high workability, easy to adjust the thickness of each layer, there is no limit to the location of the impact layer there is an advantage that can be selected by manufacturing the layer structure of the tube as needed.

따라서, 본 발명에 의하면 2층 공압출 다이를 이용하여 충격강도를 높인 염화비닐재질로 된 내충격층과, 인장강도를 높인 염화비닐 재질로 된 경질층의 2층구조로 각 층의 기능을 분리, 공압출시킴으로써 충격강도와 인장강도가 동시에 우수한 수도용 내충격 경질염화비닐관의 제조가 가능하다. 그리고, 구조가 간단한 공압출 다이를 사용함으로써 작업성이 높고, 내충격층의 위치에 제한이 없으므로 필요에 따라 관의 층구조를 선택하여 제조할 수 있는 잇점이 있다.Therefore, according to the present invention, the function of each layer is separated into a two-layer structure of an impact layer made of a vinyl chloride material having a high impact strength by using a two-layer coextrusion die, and a hard layer made of a vinyl chloride material having a high tensile strength. By co-extrusion, it is possible to manufacture impact-resistant hard vinyl chloride pipes for water having excellent impact strength and tensile strength at the same time. In addition, since the workability is high by using a coextrusion die having a simple structure, and there is no limitation in the position of the impact resistant layer, there is an advantage that the layer structure of the tube can be selected and manufactured as necessary.

Claims (6)

수지중합도가 700∼1300 사이의 폴리염화비닐 수지 100중량부, 시.피.이(CPE)나 엠,비.에스(MBS) 및 에이.비.에스(ABS)로 이루어진 군으로 부터 하나 또는 그 이상 선택된 충격보강제 5∼15중량부, 납(Pb)계 또는 주석(Sn)계 열안정제 0.3∼5중량부, 스테아린산 및/또는 폴리에틸렌 왁스와 같은 활제 0∼5중량부, 탄산칼슘 0∼20중량부로 이루어진 충격강도 보강을 위한 내충격층; 및 수지중합도가 700∼1300 사이의 폴리염화비닐 수지 100중량부, 시.피.이(CPE), 엠.비.에스(MBS) 및 에이.비.에스(ABS)로 이루어진 군으로 부터 하나 또는 그 이상 선택된 충격보강제 0∼4중량부, 납(Pb)계 또는 주석(Sn)계 열안정제 0.3∼5중량부, 스테아린산 및/또는 폴리에틸렌 왁스와 같은 활제 0∼5중량부, 탄산칼슘 0∼20중량부로 이루어진 인장강도 보강을 위한 결질층의 2층구조로 이루어진 것을 특징으로 하는 수도용 내충격 경질염화비닐관.One or more of the polyvinyl chloride resins having a degree of resin polymerization of 700 to 1300, CPE, M, B, MBS, and ABS. 5-15 parts by weight of the impact modifier selected above, 0.3-5 parts by weight of lead (Pb) or tin (Sn) -based heat stabilizer, 0-5 parts by weight of a lubricant such as stearic acid and / or polyethylene wax, 0-20 parts by weight of calcium carbonate Impact layer for reinforcing the impact strength consisting of a portion; And 100 parts by weight of a polyvinyl chloride resin having a degree of resin polymerization of 700 to 1300, CPE, M.B.S. and MB. 0-4 parts by weight of impact modifiers selected above, 0.3-5 parts by weight of lead (Pb) or tin (Sn) -based heat stabilizers, 0-5 parts by weight of lubricants such as stearic acid and / or polyethylene wax, and 0-20 parts of calcium carbonate Impact-resistant hard vinyl chloride tube for water, characterized in that consisting of a two-layer structure of the layer to strengthen the tensile strength made of a weight part. 제1항에 있어서, 상기 수지중합도가 700∼1300 사이의 폴리염화비닐수지를 단독 또는 혼합하여 사용하는 것을 특징으로 하는 수도용 내충격 경질염화비닐관.The water-resistant hard vinyl chloride tube according to claim 1, wherein the polyvinyl chloride resin having a resin degree of polymerization of 700 to 1300 is used alone or in combination. 제1항에 있어서, 상기 관의 외층이 내충격층이고 내층이 경질층이거나, 반대로 관의 외층이 경질층이고, 내층이 내충격층인 것을 특징으로 하는 수도용 내충격 경질염화비닐관.The water resistant impact resistant vinyl chloride tube according to claim 1, wherein the outer layer of the tube is an impact resistant layer and the inner layer is a hard layer, or, on the contrary, the outer layer of the tube is a hard layer, and the inner layer is an impact resistant layer. 제3항에 있어서, 상기 내충격층과 경질층의 두께비율이 3:7 내지 7:3의 범위임을 특징으로 하는 수도용 내충격 경질염화비닐관.The impact-resistant hard vinyl chloride tube for water according to claim 3, wherein the impact-resistant layer and the hard layer have a thickness ratio of 3: 7 to 7: 3. 제3항에 있어서, 상기 내충격층이 관의 내층일 경우, 열안정제로 주석(Sn)계 무독 열안정제를 0.3∼5중량부 사용하는 것을 특징으로 하는 수도용 내충격 경질염화비닐관.The impact resistant hard vinyl chloride tube for water according to claim 3, wherein when the impact resistant layer is an inner layer of the tube, 0.3 to 5 parts by weight of a tin (Sn) -based non-toxic thermal stabilizer is used as the thermal stabilizer. 제3항에 있어서, 상기 경질층이 관의 내층일 경우, 열안정제로 주석(Sn)계 무독 열안정제를 0.3∼5중량부 사용하는 것을 특징으로 하는 수도용 내충격 경질염화비닐관.The water-resistant hard vinyl chloride tube for water according to claim 3, wherein when the hard layer is an inner layer of the tube, 0.3 to 5 parts by weight of a tin (Sn) -based non-toxic heat stabilizer is used as the heat stabilizer.
KR1019960016533A 1996-05-14 1996-05-14 Rigid pvc pipe with high impact resistance for water works KR100193055B1 (en)

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KR100702580B1 (en) 2006-07-14 2007-04-02 신호철 Additive for resin and method for producing thereof
CN102964714A (en) * 2011-08-31 2013-03-13 中国石油化工股份有限公司 Scraping and wear-resistant impact-resistant polyvinyl chloride tube material and preparation method
CN109572071A (en) * 2018-11-20 2019-04-05 东莞市正品五金电子有限公司 A kind of high tenacity ABS and PVC plastic alloy pipe and preparation method thereof

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KR100733133B1 (en) * 2006-02-08 2007-06-27 (주) 삼정디씨피 Resin composition for manufacturing pipe, manufacturing method of multi layered pipe and multi layered pipe manufactured thereby
KR101882456B1 (en) 2017-11-10 2018-07-27 주식회사 고리 Resin composition of triple-walled impact resistant hard polyvinyl chloride pipe for water supply and sewage and high impact resistant polyvinyl chloride pipe using that resin composition
CN109054223A (en) * 2018-06-25 2018-12-21 滁州宇美塑业有限公司 A kind of injection raw material and preparation method thereof of inorganic filler PVC/ABS alloy
KR102212545B1 (en) 2020-07-13 2021-02-08 주식회사 제이엔피 Triple-wall impact-resistant polyvinyl chloride tube with excellent flexural strength and impact strength

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100702580B1 (en) 2006-07-14 2007-04-02 신호철 Additive for resin and method for producing thereof
CN102964714A (en) * 2011-08-31 2013-03-13 中国石油化工股份有限公司 Scraping and wear-resistant impact-resistant polyvinyl chloride tube material and preparation method
CN102964714B (en) * 2011-08-31 2015-03-25 中国石油化工股份有限公司 Scraping and wear-resistant impact-resistant polyvinyl chloride tube material and preparation method
CN109572071A (en) * 2018-11-20 2019-04-05 东莞市正品五金电子有限公司 A kind of high tenacity ABS and PVC plastic alloy pipe and preparation method thereof

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