KR100539295B1 - Resin compound with fragrance for noise-blocking pad of architecture - Google Patents
Resin compound with fragrance for noise-blocking pad of architecture Download PDFInfo
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- KR100539295B1 KR100539295B1 KR10-2003-0083870A KR20030083870A KR100539295B1 KR 100539295 B1 KR100539295 B1 KR 100539295B1 KR 20030083870 A KR20030083870 A KR 20030083870A KR 100539295 B1 KR100539295 B1 KR 100539295B1
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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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
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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
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
- E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
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Abstract
본 발명은 건축용 소음차단재용 방향성 수지 조성물에 관한 것으로서, 보다 상세하게는, 에틸렌-비닐아세테이트(Ethylene-Vinyl Acetate, 이하 EVA) 공중합체 100중량부와 발포제 0.1~10중량부, 무기계 초산탈취제 2~20중량부 및 테르핀류 오일 0.5~20중량부를 포함하여 이루어지는 건축용 소음차단재용 방향성 수지 조성물에 관한 것이다. 본 발명의 수지 조성물로 발포성형하여 제조된 소음차단재는, 경제적이고 환경오염이 적으며, 소음차단효과, 기계적 물성 및 방향성 등이 우수하다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aromatic resin composition for noise barrier materials for construction, and more particularly, 100 parts by weight of an ethylene-vinylacetate (EVA) copolymer, 0.1 to 10 parts by weight of a blowing agent, and an inorganic acetic acid deodorant. It relates to the aromatic resin composition for building noise barrier materials comprising 20 parts by weight and 0.5 to 20 parts by weight of terpine oil. The noise barrier material produced by foam molding with the resin composition of the present invention is economical and has low environmental pollution, and has excellent noise blocking effect, mechanical properties, and directionality.
Description
본 발명은 건축용 소음차단재용 방향성 수지 조성물에 관한 것으로서, 보다 상세하게는, 에틸렌-비닐아세테이트(Ethylene-Vinyl Acetate, 이하 EVA) 공중합체 100중량부와 발포제 0.1~10중량부, 무기계 초산탈취제 2~20중량부 및 테르핀류 오일 0.5~20중량부를 포함하여 이루어지는 건축용 소음차단재용 방향성 수지 조성물에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aromatic resin composition for noise barrier materials for construction, and more particularly, 100 parts by weight of an ethylene-vinylacetate (EVA) copolymer, 0.1 to 10 parts by weight of a blowing agent, and an inorganic acetic acid deodorant. It relates to the aromatic resin composition for building noise barrier materials comprising 20 parts by weight and 0.5 to 20 parts by weight of terpine oil.
종래에는 단열재 또는 건축용 소음차단재로서 스티로폼이 일반적으로 사용되어 왔다. 그러나, 스티로폼은 시간이 경과함에 따라, 건축물의 콘크리트 내에 혼입되어 있는 혼화제에 의해 변질 또는 용융된다. 따라서 건축물에 내재되어 있는 스티로폼은 일정시간이 경과한 후에는, 소음차단재로서의 기능을 상실하게 된다. 또한 스티로폼은 기계적 물성이 열악하기 때문에, 아파트등 대형건물을 재건축하는 경우, 건축물에 내재되어 있던 스티로폼이 철거시 수반되는 물리적 충격에 의해 가루가 되어 비산하는 문제점이 발생하고, 따라서 이의 수거에도 적지 않은 비용과 노동력이 소요된다. Conventionally, styrofoam has been generally used as a heat insulating material or a building noise blocking material. However, styrofoam deteriorates or melts over time by admixtures incorporated in the concrete of buildings. Therefore, the styrofoam inherent in the building loses its function as a noise blocking material after a certain time has elapsed. In addition, since styrofoam has poor mechanical properties, when rebuilding large buildings such as apartments, styrofoam, which is inherent in the building, becomes powdered and scattered due to the physical impact accompanying the demolition. It costs money and labor.
이러한 스티로폼의 문제점들을 개선하기 위해, 최근들어 발포성 EVA 수지 조성물을 발포시켜 제조한 소음차단재가 개발되고 있다. 그러나, 이 발포성 EVA 수지 조성물의 기본 수지인 EVA 공중합체 수지는, 그 비닐아세테이트기와 수지내 혹은 생산환경내에 존재하는 수분과의 반응에 의해 생성된 초산을 통상적으로 20~50ppm 정도 함유하고 있다. 보통, 수지 내의 초산 함량이 10ppm을 넘게 되면, 사람의 후각을 자극하게 되므로, 일반적인 EVA 수지를 그대로 사용하여 소음차단재를 제조할 경우, 그 초산 냄새로 인해 주거환경이 나빠지는 문제점이 있다.In order to improve the problems of styrofoam, in recent years, a noise blocking material manufactured by foaming a foamable EVA resin composition has been developed. However, EVA copolymer resin which is a basic resin of this foamable EVA resin composition generally contains about 20-50 ppm of acetic acid produced | generated by reaction of the vinyl acetate group and the moisture which exists in resin or a production environment. In general, when the acetic acid content in the resin exceeds 10ppm, it stimulates the sense of smell of the person, when using a general EVA resin as the noise-blocking material, there is a problem that the residential environment is bad due to the acetic acid smell.
또한 스티로폼 또는 단순한 수지발포체는, 이들 고유의 냄새 자체 뿐만 아니라 이들 냄새와 콘크리트 냄새의 혼합으로 인해 주거 환경에 나쁜 영향을 미친다.Styrofoam or simple resin foams also adversely affect the residential environment due to their inherent odors themselves as well as the mixing of these odors with concrete odors.
본 발명은 상기와 같은 종래의 문제점들을 해결하기 위한 것으로서, 본 발명의 목적은, 환경적, 경제적 손실을 줄이고, 소음차단효과, 기계적 물성, 탈취성 및 방향성이 우수한 수지 조성물을 제공하는 것이다. The present invention is to solve the conventional problems as described above, an object of the present invention, to reduce the environmental and economic losses, to provide a resin composition excellent in noise blocking effect, mechanical properties, deodorant and aromaticity.
본 발명에 따르면, 에틸렌-비닐아세테이트(Ethylene-Vinyl Acetate, 이하 EVA) 공중합체 100중량부와 발포제 0.1~10중량부, 무기계 초산탈취제 2~20중량부 및 테르핀류 오일 0.5~20중량부를 포함하여 이루어지는 건축용 소음차단재용 방향성 수지 조성물이 제공된다.According to the present invention, 100 parts by weight of an ethylene-vinyl acetate (hereinafter referred to as EVA) copolymer, 0.1 to 10 parts by weight of a blowing agent, 2 to 20 parts by weight of an inorganic acetate deodorant, and 0.5 to 20 parts by weight of terpineic oil are included. There is provided an aromatic resin composition for building noise barrier material.
본 발명의 수지 조성물에 사용되는 EVA 공중합체는, 비닐아세테이트 함량이 5~35중량%이고, 용융흐름지수(Melt Index)가 1~30g/10분인 것이 바람직하다. EVA 공중합체의 비닐아세테이트 함량이 5중량% 미만이면, 수지의 유연성이 저하되고 수지의 용융점이 상승하기 때문에 수지 조성물 제조시 니더 또는 압출기의 가공온도를 높여야 하므로, 이로 인해 발포제의 조기분해가 일어나는 단점이 있고, 35중량%를 초과하면, 수지의 기계적 물성이 저하되고 비중이 증가하는 단점이 있다. 또한, EVA 공중합체의 용융흐름지수가 1g/10분 미만이면 수지의 흐름성이 저하되고, 30g/10분을 초과하면 수지의 기계적 물성이 저하되는 단점이 있다.The EVA copolymer used in the resin composition of the present invention preferably has a vinyl acetate content of 5 to 35% by weight and a melt flow index (Melt Index) of 1 to 30 g / 10 minutes. When the vinyl acetate content of the EVA copolymer is less than 5% by weight, the flexibility of the resin is lowered and the melting point of the resin is increased. Therefore, the processing temperature of the kneader or the extruder must be increased when preparing the resin composition, which leads to the early decomposition of the foaming agent. And, if it exceeds 35% by weight, there is a disadvantage that the mechanical properties of the resin is lowered and the specific gravity is increased. In addition, if the melt flow index of the EVA copolymer is less than 1g / 10 minutes, the flowability of the resin is lowered, if it exceeds 30g / 10 minutes there is a disadvantage that the mechanical properties of the resin is lowered.
본 발명의 수지 조성물에 사용되는 발포제는, 아조디카본아미드(azodicarbonamide) 등의 아조계 화합물, N,N'-디니트로소펜타메틸렌테트라민 등의 니트로소계 화합물, p-톨루엔술포닐히드라지드 및 p,p'-옥시비스(벤젠술포닐히드라지드) 등의 술포닐히드라지드계 화합물, p-톨루엔술포닐 세미카바, 아조비스이소부티로니트릴 및 디아조아미노아조벤젠 중에서 하나 이상 선택되고, 분해온도가 130~190℃이며, EVA 공중합체 100중량부에 대해 0.1~10중량부가 포함되는 것이 바람직하다. 발포제 함량이 0.1중량부 미만이면 경도 및 비중이 매우 높아지고, 10중량부를 초과하면, 과도한 발포에 의해 안정한 셀구조의 발포체를 얻을 수 없으며 발포체의 기계적 물성이 급격히 저하하는 단점이 있다.The blowing agent used in the resin composition of the present invention includes azo compounds such as azodicarbonamide, nitroso compounds such as N, N'-dinitrosopentamethylenetetramine, p-toluenesulfonylhydrazide and at least one selected from sulfonylhydrazide compounds such as p, p'-oxybis (benzenesulfonylhydrazide), p-toluenesulfonyl semicarba, azobisisobutyronitrile and diazoaminoazobenzene, and decomposition temperature It is 130-190 degreeC, and 0.1-10 weight part is preferable with respect to 100 weight part of EVA copolymers. If the blowing agent content is less than 0.1 parts by weight, the hardness and specific gravity are very high, and if it exceeds 10 parts by weight, the foam having a stable cell structure cannot be obtained due to excessive foaming, and the mechanical properties of the foam are sharply lowered.
본 발명의 수지 조성물에 사용되는 무기계 초산탈취제는, 산화 마그네슘, 수산화 마그네슘, 수산화 마그네슘-알루미늄 혼합체 중에서 하나 이상 선택되고, 수지 조성물의 초산 냄새를 제거하기 위해 사용되며, EVA 공중합체 100중량부에 대해 2~20중량부가 포함되는 것이 바람직하다. 탈취제의 함량이 2중량부 미만이면 탈취 효과를 기대하기 어렵고, 20중량부 이상이면, 발포체의 기계적 물성이 저하하는 단점이 있다.The inorganic acetic acid deodorant used in the resin composition of the present invention is selected from one or more of magnesium oxide, magnesium hydroxide, and magnesium hydroxide-aluminum mixture, and is used to remove the acetic acid odor of the resin composition. It is preferable that 2-20 weight part is included. If the content of the deodorant is less than 2 parts by weight, it is difficult to expect the deodorizing effect, if more than 20 parts by weight, there is a disadvantage that the mechanical properties of the foam is lowered.
본 발명의 수지 조성물에 사용되는 테르핀류 오일은 수지 조성물에 방향성을 부가하기 위해 사용되며, EVA 공중합체 100중량부에 대해 0.5~20중량부가 포함되는 것이 바람직하다. 테르핀류 오일의 함량이 0.5중량부 미만이면 방향 효과를 기대하기 어렵고, 20중량부 이상이면, 그 향기가 너무 진해져 오히려 불쾌해진다는 단점이 있다.Terpin oils used in the resin composition of the present invention are used to add aromaticity to the resin composition, and it is preferable that 0.5 to 20 parts by weight is included with respect to 100 parts by weight of the EVA copolymer. If the content of terpineic oil is less than 0.5 parts by weight, it is difficult to expect the aroma effect, and if it is 20 parts by weight or more, the fragrance becomes too thick and rather unpleasant.
상기에서 설명한 것 이외에도, 본 발명의 목적의 범위 내에서, 발포조제, 분해조제 등의 첨가물이 본 발명의 조성물에 더 포함될 수 있다. 예를 들면, 발포가공 및 발포체의 물성향상을 위해, 산화마그네슘, 산화칼슘, 산화아연, 산화카드뮴, 산화수은, 산화납 등의 금속산화물과 탄산마그네슘, 스테아린산, 스테아린 아미드, 스테아린산 아연, 탄산아연, 탄산칼슘, 스테아린산 바륨 등이, EVA 공중합체 100중량부에 대해 0.1~10중량부의 범위 내에서 포함될 수 있다. 또한, 발포조제로서 우레아 및 우레아유도체가, EVA 공중합체 100중량부에 대해 0.1~10중량부의 범위 내에서 포함될 수 있다.In addition to those described above, within the scope of the object of the present invention, additives such as foaming aid and decomposition aid may be further included in the composition of the present invention. For example, metal oxides such as magnesium oxide, calcium oxide, zinc oxide, cadmium oxide, mercury oxide, and lead oxide, magnesium carbonate, stearic acid, stearin amide, zinc stearate, zinc carbonate, and carbonic acid for foaming processing and improving physical properties of the foam. Calcium, barium stearate, etc. can be contained in the range of 0.1-10 weight part with respect to 100 weight part of EVA copolymers. In addition, urea and urea derivatives may be included as 0.1 to 10 parts by weight with respect to 100 parts by weight of the EVA copolymer as the foaming aid.
본 발명에 따른 방향성 수지 조성물 및 이를 이용한 건축용 소음차단재의 제조방법을 상세히 설명하면 다음과 같다.The aromatic resin composition according to the present invention and a manufacturing method of the building noise shielding material using the same will be described in detail as follows.
수지, 발포제, 초산탈취제, 테르핀류 오일 및 기타 첨가제 등을, 수지의 용융점 이상 온도에서 니더 또는 반바리 믹서(banbury mixer) 등을 사용하여 혼합한다. 이 혼합물을, 니더에서 압출기 호퍼(hopper)까지 이송부를 설치하여 용융물 상태로 직접 투입하거나, 또는 수지분쇄기로 적절한 크기로 분쇄한 후 고체 상태로 압출기에 투입한다. 이 투입된 혼합물을, 90~160℃의 온도에서 수지용 단축(single-screw) 또는 이축(twin-screw) 압출기를 사용하여 압출시켜, 펠렛상의 시료로 제조한다. 이 때 압출온도는, 수지의 용융점 이상이면서 발포제의 분해온도 이하인 온도 범위 내에서 선정하여야 한다. 압출온도가 90℃ 이하이면, 수지를 충분히 용융시키지 못해서 수지용융압(resin melt pressure)이 과도히 증가하여 압출하기 어렵고, 160℃ 이상이면, 수지 용융은 용이하나 과도한 발포가 발생하여 압출하기 어렵다. 제조된 펠렛상 시료를 건조기를 사용하여 충분히 건조시킨 후, 적정량의 펠렛을 몰드(mold)에 투입하고 140~190℃, 5~600kgf/㎠의 고온·가압하에서 2~60분간 압축성형한 후, 금형을 순간적으로 열어 탈형과 동시에 발포시키므로써 소음차단재 패드를 제조한다. Resin, blowing agent, acetic acid deodorant, terpine oil, and other additives are mixed using a kneader or banbury mixer at a temperature above the melting point of the resin. The mixture is fed directly from the kneader to the extruder hopper and fed into the melt, or pulverized to a suitable size with a resin grinder and then fed into the extruder in a solid state. This charged mixture is extruded using a single-screw or twin-screw extruder for resin at a temperature of 90 to 160 ° C to prepare a pellet-like sample. At this time, the extrusion temperature should be selected within a temperature range that is above the melting point of the resin and below the decomposition temperature of the blowing agent. When the extrusion temperature is 90 ° C. or less, the resin is not sufficiently melted, so the resin melt pressure is excessively increased and difficult to extrude. When the extrusion temperature is 160 ° C. or more, the resin melts easily, but excessive foaming occurs and it is difficult to extrude. After drying the prepared pellet-shaped sample sufficiently using a dryer, an appropriate amount of pellets were put into a mold and compression molded at 140 to 190 ° C. and 5 to 600 kgf / cm 2 under high temperature and pressure, followed by compression molding. By opening the mold momentarily and foaming at the same time to produce a noise barrier pad.
이하 실시예 및 비교예에 의해 본 발명을 상세히 설명하나, 이에 의해 본 발명이 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto.
실시예 1~4Examples 1-4
실시예 1~4에 있어서, 표 1에 표시된 바에 따라, 해당 EVA 공중합체 100중량부를 니더에서 약 9분간 먼저 혼합한 후, 해당량의 아조디카본아미드계 발포제와 초산탈취제로서 10중량부의 산화 마그네슘 및 5중량부의 테르핀류 오일을 추가 첨가하고 3분간 더 혼합하여, 총 혼합시간을 12분으로 하였다. 이 혼합물을 수지분쇄기로 분쇄한 후, 이축 수지압출기(Diameter = 30mm, L/D = 29)에 투입하고 압출하므로써, 본 발명에 따른 수지 조성물을 펠렛상으로 얻었다. In Examples 1 to 4, as shown in Table 1, 100 parts by weight of the EVA copolymer was first mixed in the kneader for about 9 minutes, and then 10 parts by weight of magnesium oxide as the corresponding amount of azodicarbonamide-based blowing agent and acetic acid deodorant. And 5 parts by weight of terpine oil were further added and further mixed for 3 minutes, so that the total mixing time was 12 minutes. The mixture was pulverized with a resin grinder, and then charged into a twin screw extruder (Diameter = 30 mm, L / D = 29) and extruded to obtain a resin composition according to the present invention in pellet form.
얻어진 수지 조성물 펠렛의 적정량을 몰드에 넣고, 150℃에서 35분간 압축성형(compression molding)한 후 발포시키므로써, 실시예 1~4의 방향성 수지 조성물을 사용한 건축용 소음차단재 패드를 제조하였고, 얻어진 소음차단재 패드의 제반 물성을 측정하였다.An appropriate amount of the obtained resin composition pellets was put in a mold, compression molded at 150 ° C. for 35 minutes, and then foamed, thereby manufacturing a noise barrier pad for building using the aromatic resin composition of Examples 1 to 4, and obtaining the noise barrier material. The overall physical properties of the pads were measured.
비교예 1Comparative Example 1
실시예 1~4의 방향성 수지 조성물을 사용하여 제조된 건축용 소음차단재 패드에 대한 비교예 1로는, 일반적인 건축용 스티로폼을 사용하였으며, 실시예 1~4와 동일한 방법으로 그 물성을 측정하였다.As Comparative Example 1 for the building noise barrier pads prepared using the aromatic resin composition of Examples 1 to 4, general building styrofoam was used, and the physical properties thereof were measured in the same manner as in Examples 1 to 4.
비교예 2Comparative Example 2
산화 마그네슘 및 테르핀류 오일을 첨가하지 않는 것을 제외하고는, 실시예 2와 동일한 방법으로 비교예 2의 수지 조성물을 얻었다.A resin composition of Comparative Example 2 was obtained in the same manner as in Example 2, except that magnesium oxide and terpine oil were not added.
또한, 실시예 1~4와 동일한 방법으로 비교예 2의 수지 조성물을 사용한 건축용 소음차단재 패드를 제조하였고, 그 물성도 실시예 1~4와 동일한 방법으로 측정하였다.In addition, the sound insulation pad for building using the resin composition of Comparative Example 2 was prepared in the same manner as in Examples 1 to 4, and the physical properties thereof were also measured in the same manner as in Examples 1 to 4.
실시예 1~4에 사용된 EVA 공중합체의 특성 및 발포제 함량과, 비교예 1 및 비교예 2와 실시예 1~4의 수지 조성물을 사용하여 제조된 소음차단재 패드의 물성 측정 결과를 표 1에 나타내었다.The properties and foaming agent content of the EVA copolymer used in Examples 1 to 4 and the measurement results of physical properties of the noise barrier pads prepared using the resin compositions of Comparative Examples 1 and 2 and Examples 1 to 4 are shown in Table 1. Indicated.
물성 측정방법Property measurement method
상기 비교예 1, 비교예 2 및 실시예 1~4에 의해 제조된 소음차단재 패드의 물성은, 다음과 같은 방법으로 측정하였다.The physical properties of the noise barrier pads prepared in Comparative Example 1, Comparative Example 2 and Examples 1 to 4 were measured by the following method.
① 비중① Specific gravity
발포체의 비중은, 표면을 제거한 후, 자동 비중측정장치를 사용하여 3회 측정하여 그 평균값을 취하였다.After removing the surface, the specific gravity of the foam was measured three times using an automatic specific gravity measuring device, and the average value was taken.
② 인장강도 및 신율② tensile strength and elongation
발포체의 표면층을 제거하고 두께를 약 3㎜로 만든 후, 시험편 모양의 커터로 시험편을 잘라내고, ASTM D-412방법에 의하여 인장강도 및 신율을 측정하였다. 이 때 인장속도는 500㎜/분으로 하였으며, 한 시험편당 5회 측정하여 그 평균치를 취하였다.After removing the surface layer of the foam and making the thickness about 3 mm, the test piece was cut out with a test piece-shaped cutter, and tensile strength and elongation were measured by ASTM D-412 method. At this time, the tensile speed was 500 mm / min, and the average value was taken five times per test piece.
③ 영구압축줄음율③ permanent compression rate
발포체의 두께가 약 10㎜, 지름이 25.4㎜인 원기둥 형태의 시험편을 만든 후, 2장의 평행금속판 사이에 시험편을 넣고, 시험편 두께의 50%에 해당하는 스페이서(spacer)를 끼운 후 압축시켜 오븐내에서 50℃, 6시간동안 열처리한 후, 압축장치에서 시험편을 꺼내어 상온에서 30분간 냉각시킨 후 두께를 측정하였으며, 5회이상 측정한 후 그 평균값을 취하였다. 다음 식(1)에 의하여 영구압축줄음율을 계산하였다.After making a cylindrical specimen having a thickness of about 10 mm and a diameter of 25.4 mm, inserting the specimen between two parallel metal plates, inserting a spacer corresponding to 50% of the thickness of the specimen, and compressing it in an oven. After heat treatment at 50 ° C. for 6 hours, the test piece was taken out from the compression apparatus, cooled at room temperature for 30 minutes, and then the thickness thereof was measured. Permanent compression shrinkage was calculated by the following equation (1).
영구압축줄음율 (%) = (to-t)/(0.5×to)×100 ·····식(1)Permanent compression ratio (%) = (to-t) / (0.5 × to) × 100 Equation (1)
단, to는 실험전 시료 두께, t는 실험후 시료 두께이다.Where to is the sample thickness before the experiment and t is the sample thickness after the experiment.
④소음차단성④ Noise barrier
소음차단성은 KS F2810에 명시된 바닥 충격음 측정방법을 이용하였으며, 소음 발생체에서 주파수 50Hz를 주었을 때 측정되는 음을 데시벨(dB)로 표기하였다. 즉, dB가 낮을수록 소음차단 효과가 우수하다.The sound insulation was measured using the floor impact sound measurement method specified in KS F2810, and the sound measured when the frequency generator was given 50Hz was expressed in decibels (dB). That is, the lower the dB, the better the noise blocking effect.
⑤초산탈취성 및 방향성⑤ Acetic acid deodorization and fragrance
초산냄새의 원인인 초산의 함량을 가스크로마토그래피로 측정하므로써 초산탈취성을 평가하였고, 방향성은 관능 검사로 평가하였다.Acetic acid deodorization was evaluated by measuring the content of acetic acid, which is the cause of acetic acid smell, by gas chromatography, and the aromaticity was evaluated by sensory test.
[표 1]TABLE 1
표 1에서 알 수 있듯이, 본 발명의 수지 조성물로 제조한 건축용 소음차단재는, 기존 스티로폼 대비 소음차단효과와 기계적 물성이 우수한 장점이 있고, 초산탈취제 및 테르핀류 오일이 첨가되지 않은 수지 조성물로 제조한 소음차단재에 비해 초산 냄새의 주원인인 초산의 함량이 감소하므로써 초산 냄새 탈취의 효과가 우수하며, 방향성 또한 우수한 장점이 있다.As can be seen in Table 1, the building noise shielding material manufactured from the resin composition of the present invention has the advantages of excellent noise blocking effect and mechanical properties compared to the existing styrofoam, and made of a resin composition to which no acetate deodorant and terpineic oil are added. Compared with the noise barrier material, the acetic acid deodorization effect is excellent because the content of acetic acid, which is the main cause of acetic acid odor, is excellent, and the aromaticity is also excellent.
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