KR20090080371A - Polymer-modified asphalt waterproofing material with low melting temperature - Google Patents
Polymer-modified asphalt waterproofing material with low melting temperature Download PDFInfo
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- KR20090080371A KR20090080371A KR1020080006280A KR20080006280A KR20090080371A KR 20090080371 A KR20090080371 A KR 20090080371A KR 1020080006280 A KR1020080006280 A KR 1020080006280A KR 20080006280 A KR20080006280 A KR 20080006280A KR 20090080371 A KR20090080371 A KR 20090080371A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/36—Bituminous materials, e.g. tar, pitch
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/06—Copolymers with styrene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L95/00—Compositions of bituminous materials, e.g. asphalt, tar, pitch
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
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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
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/40—Mixtures based upon bitumen or asphalt containing functional additives
- C08L2555/80—Macromolecular constituents
- C08L2555/84—Polymers comprising styrene, e.g., polystyrene, styrene-diene copolymers or styrene-butadiene-styrene copolymers
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Abstract
Description
본 발명은 개질아스팔트 도막방수재에 관한 것으로, 보다 구체적으로는 융점이 낮아 작업시 유해가스의 발생이 억제되고 화재를 예방함과 동시에, 고온용융에 따른 급격한 산화 및 노화현상을 방지할 수 있는 친환경적 저융점 개질아스팔트 도막방수재에 관한 것이다.The present invention relates to a modified asphalt coating waterproofing material, more specifically, low melting point to prevent the generation of harmful gases during work and prevent fire, and at the same time environmentally friendly low to prevent rapid oxidation and aging due to high temperature melting A melting point modified asphalt coating waterproofing material.
종래의 방수재는 고무아스팔트 도막방수재, 용제형 도막방수재, 수용성 도막방수재 등으로 구별되는데, 종래의 열공법용 개질아스팔트 도막방수재는 도막재를 녹이고 도막재의 평활도를 유지하기 위하여 용융 가마에서 180~250℃의 고온으로 장시간 가열함으로써 스트레이트 아스팔트가 끓으면서 아스팔트 흄(fume)과 같은 유해가스와 악취로 인하여 환경을 저해할 뿐 아니라, 화재의 위험성과 도막방수재의 물성에 영향을 미쳐 내한성, 내균열성, 신장률 및 내열성이 현격히 저하되며 산화 및 노화현상이 급격히 진행되어 건축물의 누수에 의한 하자 발생의 원인이 되기도 한다.Conventional waterproofing materials are classified into rubber asphalt coating waterproofing materials, solvent-type coating waterproofing materials, water-soluble coating waterproofing materials, and the like. The conventional modified asphalt coating waterproofing materials for the thermal method are melted in coating materials and maintain the smoothness of the coating materials at 180-250 ° C. By heating for a long time at high temperature, the straight asphalt boils, which not only impairs the environment due to harmful gases such as asphalt fume and odor, but also affects the risk of fire and the properties of the coating waterproofing material. The heat resistance is greatly reduced and oxidation and aging are rapidly progressing, which may be the cause of defects caused by leakage of buildings.
또한 용제형 도막방수재는 환경공해와 독성이 있어 인체에 유해하며, 수용성 도막방수재는 수분이 함유되어 있어 동절기 시공에 취약한 문제점을 드러내고 있다.In addition, solvent-type coating waterproofing is harmful to the human body due to environmental pollution and toxic, water-soluble coating waterproofing is exposed to the problem that is vulnerable to winter construction because it contains water.
한편, 한국특허 공고번호 제10-0272949호에는 내균열 추종성과 접착성 및 내열성을 향상시킬 목적으로 열가소성 고무화 아스팔트 도막방수재 및 그 제조방법을 개시하고 있다. 그러나, 이 도막방수재 조성물에는 열가소성수지(SBS, SIS)와 합성수지(쿠마론인덴수지, 폴리프로필렌, 폴리스티렌)의 함량이 지나치게 많아 기계적 강도 등과 같은 물성은 향상되지만, 조성물의 융점이 상대적으로 높아 현장에서의 작업성이 나쁘고 환경오염을 야기하는 등의 문제점을 지니고 있다.On the other hand, Korean Patent Publication No. 10-0272949 discloses a thermoplastic rubberized asphalt coating waterproofing material and a method of manufacturing the same for the purpose of improving the crack tracking resistance and adhesion and heat resistance. However, the coating waterproof composition has a high content of thermoplastic resins (SBS, SIS) and synthetic resins (coumarone indene resin, polypropylene, polystyrene), thereby improving physical properties such as mechanical strength, but the melting point of the composition is relatively high. Its workability is poor and causes environmental pollution.
본 발명은 이러한 종래기술의 문제점을 감안하여 안출된 것으로, 그 목적은 도막방수재의 융점이 낮아 현장에서의 작업성이나 시공성이 뛰어나고 유해가스의 발생이 억제될 뿐 아니라 고온용융에 따른 도막방수재의 물성 저하를 방지할 수 있는 저융점 개질아스팔트 도막방수재를 제공하고자 하는 것이다.The present invention has been made in view of the problems of the prior art, the purpose of which is the low melting point of the coating waterproofing material is excellent in workability or workability in the field and the generation of harmful gas is suppressed as well as the properties of the coating waterproofing material due to high temperature melting It is to provide a low melting point modified asphalt coating waterproofing material that can prevent degradation.
이러한 목적을 달성하기 위하여, 본 발명에 의하면, 스트레이트 아스팔트 30-40중량부, 열가소성 고무 5-10중량부, 석유수지 5-10중량부, 검로진 20-30중량부, 프로세스오일 30-40중량부를 주성분으로 하고, 여기에 소포제, 가소제, 산화방지제, 노화방지제를 부성분으로 포함하여 구성되는 저융점 개질아스팔트 도막방수재가 제공된다.In order to achieve this object, according to the present invention, 30-40 parts by weight of straight asphalt, 5-10 parts by weight of thermoplastic rubber, 5-10 parts by weight of petroleum resin, 20-30 parts by weight of gum rosin, 30-40 parts by weight of process oil The low melting point modified asphalt coating waterproofing material which consists of a part as a main component and consists of an antifoamer, a plasticizer, antioxidant, and an antiaging agent as a subcomponent is provided.
본 발명에서는 개질아스팔트 도막방수재로서의 역할을 하는 범위 내에서 열가소성 수지의 함량을 조절하였으며, 쿠마론인덴 수지, PP, PS 등의 합성수지는 도막방수재의 점성 및 경도를 높여 융점을 높게 하는 요인이 되므로 이들의 첨가는 억제하고 또한 분산성과 유동성을 향상시키기 위하여 프로세스오일의 함량을 증가시켰다.In the present invention, the content of the thermoplastic resin was controlled within the range serving as the modified asphalt coating waterproofing material, and synthetic resins such as coumarone indene resin, PP, and PS were used to increase the viscosity and hardness of the coating waterproofing material, thereby increasing their melting point. The content of process oil was increased to suppress the addition of and to improve dispersibility and flowability.
본 발명의 도막방수재 조성물의 구성성분 및 함량을 제한한 이유를 설명하기로 한다.The reason for limiting the components and content of the coating waterproofing composition of the present invention will be described.
먼저, 본 발명에서 스트레이트 아스팔트는 방수재의 주성분으로서 역할을 하며, 그 종류로는 AP-3 또는 AP-5가 있다. 스트레이트 아스팔트의 함량은 30-40중량부가 적당한데, 그 함량이 30중량부 미만으로 되면 융점이 높아져 유동성이 감소하고 가소성이 저하되는 문제가 있고, 또한 40중량부를 초과하는 경우에는 접착력이 감소되고, 경도가 상승되는 등의 이유로 바람직하지 못하다.First, in the present invention, the straight asphalt serves as a main component of the waterproofing material, and the kind is AP-3 or AP-5. The content of the straight asphalt is 30-40 parts by weight, but if the content is less than 30 parts by weight, the melting point is increased, there is a problem that the fluidity is reduced and plasticity is lowered, and if it exceeds 40 parts by weight, the adhesive strength is reduced, It is not preferable for reasons such as increase in hardness.
본 발명에서 열가소성 고무는 스트레이트 아스팔트를 개질하기 위하여 사용하는 성분으로서 대표적으로는 스티렌-부타디엔-스티렌 중합체(SBS)를 예로 들 수 있다. 열가소성 고무의 함량이 5중량부 미만으로 되면 스트레이트 아스팔트의 개질이 충분하지 않으며, 반대로 그 함량이 10중량부를 초과하면 도막방수재 조성물의 융점이 지나치게 높아져 저융점의 구현이라고 하는 본 발명의 목적을 달성할 수 없다.In the present invention, the thermoplastic rubber is typically a styrene-butadiene-styrene polymer (SBS) as a component used for modifying straight asphalt. When the content of the thermoplastic rubber is less than 5 parts by weight, the modification of the straight asphalt is not sufficient, on the contrary, when the content is more than 10 parts by weight, the melting point of the coating waterproofing material composition becomes too high to achieve the object of the present invention, which is the implementation of low melting point. Can't.
석유수지는 개량아스팔트를 가황시키는 작용을 하고, 인장성능(인장강도나 신장률)과 상온에서의 경도를 강화하기 위한 것으로, 소량을 혼합하면 물성에 미치 는 영향이 미미하며, 과량 사용시 석유수지 특유의 악취와 기존의 개량아스팔트의 물성을 저해할 우려가 있어 적절한 범위로 5~10중량부를 투입한다. 석유수지의 종류로는 C-9, C-5, 쿠마론 등이 있다.The petroleum resin acts to vulcanize the improved asphalt, and to enhance the tensile performance (tensile strength and elongation) and hardness at room temperature. Mixing a small amount has little effect on the physical properties. There is a risk of impairing the odor and the properties of the existing improved asphalt, so 5 to 10 parts by weight is added in an appropriate range. Types of petroleum resins include C-9, C-5, and coumarone.
검로진(gum rosin)은 원하는 작업온도에서의 유동성을 강화시키고 상온에서의 경도를 유지하며 접착력을 향상시켜 상온에서의 지촉 건조시간의 향상을 위하여 사용하는데, 소량 사용시 상온에서의 경도를 유지할 수 없고 프로세스 오일의 브리딩현상을 제거하지 못하는 반면, 과량으로 투입시 개량아스팔트의 경화현상을 조장하여 바람직하지 못하므로 20~30중량부를 투입하는 것이 바람직하다.Gum rosin is used to enhance the fluidity at the desired working temperature, maintain the hardness at room temperature, and improve the adhesion to improve the drying time at room temperature. While it is not possible to remove the bleeding phenomenon of the process oil, it is preferable to add 20 to 30 parts by weight since it is not preferable because it promotes hardening of the improved asphalt when added in an excessive amount.
프로세스 오일은 조성물의 유동성, 분산성 및 개량아스팔트의 물성 강화제로 사용되며, 소량 사용시 아스팔트와 검로진의 혼합시 급격한 물성변화를 억제할 수 없을 뿐 만 아니라 작업온도를 적절하게 조절하기 곤란하고 또한, 방수재의 인장성능이나 내열성능 향상을 확보하기 곤란하며, 그 양이 지나치게 많을 경우 가소성을 상실하여 형태적 안정성을 유지할 수 없으므로 프로세스 오일의 적정함량은 30∼40중량부이다. 본 발명에서 사용가능한 프로세스 오일의 종류로는 크게 나프탄계, 파라핀계, 아로매틱계 등이 있고, 열가소성 수지와의 상용성을 고려하면 나프탄계 프로세스 오일이 특히 바람직하다.Process oil is used as a composition enhancer for the flowability, dispersibility and improved asphalt properties of the composition, and it is difficult to control the working temperature appropriately when mixing small amounts of asphalt and gumgin, and it is difficult to properly control the working temperature. It is difficult to secure an improvement in tensile performance and heat resistance of the resin. When the amount is too large, plasticity is lost and morphological stability cannot be maintained. Therefore, an appropriate amount of process oil is 30 to 40 parts by weight. Types of process oil that can be used in the present invention include naphtan-based, paraffin-based, aromatic-based, and the like, and naphtan-based process oils are particularly preferable in consideration of compatibility with thermoplastic resins.
소포제는 고온에서의 소포작용을 위하여 사용하며 다량 사용시 개량아스팔트의 겔현상을 초래하므로 0.1중량부 이내가 바람직하다. 소포제로는 실리콘계 소포제가 바람직하다.Antifoaming agent is used for the defoaming at high temperature, and when used in a large amount, it is preferable to be within 0.1 part by weight since it causes gel development of improved asphalt. As an antifoamer, a silicone type antifoamer is preferable.
아울러, 본 발명에서는 가소제, 산화방지제, 노화방지제 등을 부성분으로 포 함하는데 이러한 성분은 통상의 개질아스팔트 방수재의 제조시에 필수적으로 포함되는 성분으로 그 기능이나 역할이 종래의 것과 다르지 않다. In addition, the present invention includes a plasticizer, an antioxidant, an anti-aging agent, and the like as a subcomponent, which is essentially included in the manufacture of a conventional modified asphalt waterproofing material, and its function or role is not different from the conventional one.
구체적으로, 가소제는 각종 물성의 균형을 양호하게 할 목적으로 사용한다. 본 발명에서 사용되는 가소제로는 프탈레이트(Phthalate)계 DOP를 예로 들 수 있고, 산화방지제로는 2,2,4-트리메틸-1,2-디하이드로퀴놀레인 (2,2,4-trimetyl-1,2-dihydroquinoleine)가 사용 가능하고, 노화방지제로는 6-에톡시-2,2,4-트리메틸-1,2-디하이드로퀴놀레인(6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline) 등이 사용 가능하다. 그리고 이러한 부성분의 각 함량은 일반적으로 0.1중량부 이하의 범위가 적당하다.Specifically, the plasticizer is used for the purpose of improving the balance of various physical properties. Phthalate-based DOP may be used as the plasticizer used in the present invention, and as an antioxidant, 2,2,4-trimethyl-1,2-dihydroquinolane (2,2,4-trimetyl-1 , 2-dihydroquinoleine) can be used, and as an anti-aging agent, 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinolane (6-ethoxy-2,2,4-trimethyl-1, 2-dihydroquinoline) and the like can be used. And each content of these subcomponents generally has a suitable range of 0.1 parts by weight or less.
이상에서 설명한 바와 같이, 상기 본 발명에 의한 개질아스팔트 도막방수재를 시공현장에서 사용시 용융가마에서 가열 용융시키면 종래의 도막방수재와 같이 180~250℃ 의 고온이 아닌 120℃ 정도의 저온에서 용융됨으로써 유해가스가 발생되지 않고 화재의 위험성이 없으며 시공시 도막방수재의 평활도를 유지하기 쉽고 고온 용융에 의한 급격한 산화 및 노화현상을 방지하여 건축물의 누수를 방지하는 등의 우수한 효과가 있다.As described above, when the modified asphalt coating waterproofing material according to the present invention is heated and melted in a molten kiln when used in a construction site, it is melted at a low temperature of about 120 ° C rather than a high temperature of 180 to 250 ° C like a conventional coating waterproofing material, thereby causing harmful gases. It does not occur, there is no risk of fire, and it is easy to maintain the smoothness of coating waterproofing material during construction, and it has an excellent effect of preventing leakage of building by preventing rapid oxidation and aging phenomenon due to high temperature melting.
이하, 실시예를 통하여 본 발명을 더욱 자세히 설명하기로 한다.Hereinafter, the present invention will be described in more detail with reference to Examples.
(실시예)(Example)
스트레이트 아스팔트 33중량부를 180~190℃로 가열하여 스티렌-부타디엔-스 티렌 중합체 7중량부를 혼합하여 고속(3,500 rpm)으로 60분간 교반하여 단일 화합물 형태로 제조하였다.33 parts by weight of straight asphalt was heated to 180-190 ° C., and 7 parts by weight of styrene-butadiene-styrene polymer was mixed and stirred at high speed (3,500 rpm) for 60 minutes to prepare a single compound.
이후 저속(500 rpm)으로 60분간 교반하여 균일하게 분산되도록 한 후 아스팔트 개질용 석유수지(C-9) 7중량부를 투입한 후 다시 30분간 교반하여 물성을 강화시킨 후 온도를 150℃로 조정하였다. 그 후 상기 조성물에 검로진 20중량부를 소량씩 투입하여 온도를 150℃로 유지하면서 30분간 300 rpm으로 교반하였다. 이때 온도가 150℃ 이상으로 상승하면 검로진이 끓어 다량의 기포가 발생하여 넘칠 수 있으므로 주의하여야 한다.After stirring for 60 minutes at a low speed (500 rpm) to be uniformly dispersed, 7 parts by weight of asphalt modified petroleum resin (C-9) was added and stirred for 30 minutes to enhance physical properties, and then the temperature was adjusted to 150 ° C. . Thereafter, 20 parts by weight of gum rosin was added to the composition in small portions, followed by stirring at 300 rpm for 30 minutes while maintaining the temperature at 150 ° C. At this time, if the temperature rises above 150 ℃, the gum rosin will boil and a large amount of bubbles may be generated, so be careful.
상기 공정 후 나프탄계 프로세스 오일 33중량부를 서서히 투입하면서 온도를 100℃까지 내린 후 50분 간 150 rpm으로 교반한 후 고온용 실리콘 소포제를 투입하면서 30분간 더 교반하여 융점 120℃ 정도의 아스팔트 도막방수재 조성물을 제조하였다.After the above step, while slowly adding 33 parts by weight of naphtan-based process oil, the temperature was lowered to 100 ° C, stirred at 150 rpm for 50 minutes, and further stirred for 30 minutes while adding a high-temperature silicone antifoaming agent to an asphalt coating waterproofing composition having a melting point of about 120 ° C. Was prepared.
이 조성물에 대해 KS F 3211, KS F 4917의 시험방법으로 물성을 측정하고 그 결과를 표 1에 나타내었다.The physical properties of the composition were measured by the test methods of KS F 3211 and KS F 4917, and the results are shown in Table 1.
표 1에서 보는 바와 같이, 본 발명의 개질아스팔트 도막방수재는, KS규격의 개량아스팔트 방수시트와 지붕용 도막방수재의 규격을 고려하면, 여러 가지 물성들이 적어도 종래기술의 수준에 도달하면서도 120℃ 정도의 저온에서 용융되어 시공성이 좋고, 시공 후에도 개질아스팔트 도막방수재가 쉽게 경화되지 않아 방수층의 균열에 대한 추종성이 우수한 것이다.As shown in Table 1, the modified asphalt coating waterproofing material of the present invention, considering the specifications of the improved asphalt waterproof sheet and roof coating waterproofing material of the KS standard, various properties of at least about 120 ℃ while reaching the level of the prior art It melts at low temperatures and has good workability, and the modified asphalt coating waterproofing material is not easily cured even after construction, so it is excellent in followability to cracking of the waterproof layer.
여기서, 저온굴곡성능이란 개질아스팔트 방수재가 저온에서 부러지지 않고 형태를 유지하는 최저온도로 겨울철 시공에 주요한 요소이고, 인장강도는 개질아스팔트를 인장시켰을때의 강도를 나타내며 구조물의 크랙이나 신축에 의한 변형에 견디는 힘을 나타낸다. 신장율은 개질아스팔트의 연신 성능을 나타내며 구조물의 신축에 대응하는 힘을 나타낸다. 그리고, 인열강도는 개질아스팔트의 찢어짐에 대응하는 강도로서 구조물의 측방향 신축이나 부동침하에 대응하는 힘을 나타낸다.Here, the low temperature bending performance is the lowest temperature at which the modified asphalt waterproofing material does not break at low temperature and maintains its shape, and is a major factor in the construction in winter, and the tensile strength indicates the strength when the modified asphalt is tensioned and is deformed by deformation or cracking of the structure. Demonstrates strength to endure. Elongation represents the stretching performance of the modified asphalt and the force corresponding to the stretching of the structure. The tearing strength is the strength corresponding to the tearing of the modified asphalt, and indicates the force corresponding to the lateral stretching or floating settlement of the structure.
이상과 같이, 본 발명은 비록 한정된 실시예에 의해 설명되었으나, 본 발명은 이것에 의해 제한되지 않으며 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 본 발명의 기술사상과 아래에 기재될 특허청구범위의 균등범위 내에서 다양한 수정과 변형이 가능하다.As mentioned above, although this invention was demonstrated by the limited Example, this invention is not limited by this and it is described by the person of ordinary skill in the art to this invention, and the following description. Various modifications and variations are possible within the scope of the claims.
Claims (4)
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