KR20200103961A - Agricultural by-product particle insulator and manufacturing method thereof - Google Patents

Agricultural by-product particle insulator and manufacturing method thereof Download PDF

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KR20200103961A
KR20200103961A KR1020190022208A KR20190022208A KR20200103961A KR 20200103961 A KR20200103961 A KR 20200103961A KR 1020190022208 A KR1020190022208 A KR 1020190022208A KR 20190022208 A KR20190022208 A KR 20190022208A KR 20200103961 A KR20200103961 A KR 20200103961A
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agricultural
manufacturing
materials
product particles
basic mixture
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박유나
김영아
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충남대학교산학협력단
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L97/00—Compositions of lignin-containing materials
    • C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse

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Abstract

In the present invention, these composite boards and composites are functional composite materials and novel insulation materials which recycle agricultural waste resources, and have superior properties compared to existing woody board materials and sound-absorbing materials for building interiors, thereby being able to be suitably used as a substitute for the material. The present invention provides a method for manufacturing an agricultural by-product particle comprising the following steps: producing a basic mixture by mixing cornstalk, wood chips, and resin; and press molding the basic mixture to form the agricultural by-product particle.

Description

농산물 부산물 파티클 단열재 및 그 제조방법{Agricultural by-product particle insulator and manufacturing method thereof}Agricultural by-product particle insulator and its manufacturing method TECHNICAL FIELD [Agricultural by-product particle insulator and manufacturing method thereof]

본 발명은 농산물 부산물 파티클 단열재 및 그 제조방법에 관한 것으로, 보다 상세하게는 옥수수대와 같은 농산 부산물을 사용하여 목재용 수지 접착제와 상용성이 우수하며, 기계적 강도와 물리적 특성이 우수한 농산 부산물 파티클 단열재 제조 방법에 관한 것이다.The present invention relates to an agricultural by-product particle insulation material and a method for manufacturing the same, and more particularly, to an agricultural by-product particle insulation material having excellent compatibility with a resin adhesive for wood using agricultural by-products such as cornstalk, and excellent mechanical strength and physical properties. It relates to a manufacturing method.

단열재는 전도, 대류, 복사에 의한 열 에너지의 이동을 억제하거나 차단할 수 있는 재료를 칭한다. 어떤 물체로 대류가 일어나지 않는 공기층을 만들 수 있으면 단열재가 된다. 단열재는 원료의 종류, 형태 및 사용온동 따라 구분할 수는 있으나 일반적으로 크게 재질에 따라 무기 재료와 유기 재료로 나뉜다. 무기 재료에는 미네랄울(Mineral Wool), 유리면(Glass wool), Ceramic Fiber, Silica, Perlite, 질석 등이 있다. 유기 재료에는 발포폴리스티렌(스티로폼), 발포폴리우레탄(우레탄), 압출발포폴리스티렌(아이소핑크),폴리에틸렌(아티론)이 있다. 이는 주택이나 빌딩 등의 건축 분야에서 가장 크게 사용된다. 기계설비나 플랜트 공사용, 차량이나 선박, 냉동 창고, 가전제품 등의 보온,보냉용으로도 쓰인다.Insulation material refers to a material that can inhibit or block the transfer of heat energy by conduction, convection, and radiation. If an object can create a layer of air that does not cause convection, it is an insulating material. Insulation materials can be classified according to the type, shape and temperature of use of raw materials, but in general, it is largely divided into inorganic and organic materials depending on the material. Inorganic materials include mineral wool, glass wool, ceramic fiber, silica, perlite and vermiculite. Organic materials include expanded polystyrene (styrofoam), expanded polyurethane (urethane), extruded expanded polystyrene (isopink), and polyethylene (artyrone). It is most widely used in the field of architecture such as houses and buildings. It is also used for thermal insulation and cooling of machinery and plant construction, vehicles, ships, refrigeration warehouses, and home appliances.

세계 각국에서는 에너지 절약을 통한 온실가스 감축에 노력하고 있다. 화석연료의 대부분을 수입에 의존하고 있는 우리나라는 에너지를 절약하여 지속적인 경제발전을 도모하기 하여 건축물의 단열시스템을 효과적으로 구하는 것이 매우 필요하다. Countries around the world are making efforts to reduce greenhouse gases through energy conservation. In Korea, which relies on imports for most of fossil fuels, it is very necessary to effectively obtain an insulation system for buildings in order to save energy and promote sustainable economic development.

최근 에너지 소비를 최소화하면서 최저 비용으로 안전하고 쾌적한 주거 공간을 조성하기 위한 최신 건축 공법인 passive house를 지향하고 있다. Recently, we are aiming for the latest construction method, passive house, to create a safe and comfortable residential space at the lowest cost while minimizing energy consumption.

현재 북미나 유럽 뿐만 아니라 우리나라도 passive house 공법을 적용한 건축물들이 늘어나고 있는데, 여기에는 난방에 소요되는 유효 에너지를 절감하기 위한 친환경·고성능 단열재의 적용이 요구된다. 천연재료를 사용하여 경제적이면서도 얇고 가벼운 단열재를 제조하는 것이 필요하다. Currently, in North America and Europe, as well as Korea, the number of buildings applying the passive house method is increasing, which requires the application of eco-friendly and high-performance insulation materials to reduce the effective energy required for heating. It is necessary to manufacture economical, thin and light insulation materials using natural materials.

따라서, 친환경 건축물에서 보온·단열에 사용되도록 유해한 화학적 성분이나 유기용제 등이 사용되지 않고 자연에서 산출되는 산물을 이용하여 적용되는 친환경 단열재에 대한 필요성이 요청되고 있다.Therefore, there is a need for an eco-friendly insulation material applied using products produced in nature without the use of harmful chemical components or organic solvents to be used for thermal insulation and insulation in eco-friendly buildings.

아울러, 불연성을 가진 옥수수대의 성능과 목재칩을 결합하여 단열재의 구비조건에 적합한 단열재 개발을 위한 최적 비율을 찾는 것이 필요하다. In addition, it is necessary to find an optimal ratio for developing an insulation material suitable for the conditions of the insulation by combining the performance of non-flammable corn stalks and wood chips.

한국특허공개공보 10-2006-0102605Korean Patent Laid-Open Publication 10-2006-0102605

본 발명이 해결하고자 하는 과제는, 옥수수대와 같은 농산 부산물을 사용하여 목재용 수지 접착제와 상용성이 우수하며, 기계적 강도와 물리적 특성이 우수한 농산 부산물 파티클 단열재 제조 방법을 제공하는데 있다.The problem to be solved by the present invention is to provide a method of manufacturing an agricultural by-product particle insulation material having excellent compatibility with a resin adhesive for wood and having excellent mechanical strength and physical properties by using agricultural by-products such as corn cob.

본 발명의 일 실시예에 따른 농산 부산물 파티클 제조방법은, 옥수수대, 목재칩 및 수지를 혼합하여 기초혼합물을 생성하는 단계; 및 상기 기초혼합물을 프레스 성형하여 농산 부산물 파티클을 형성하는 단계를 포함하여 구성된다.A method for producing agricultural by-product particles according to an embodiment of the present invention comprises the steps of producing a basic mixture by mixing cornstalk, wood chips and resin; And forming agricultural by-product particles by press-forming the basic mixture.

상기 기초혼합물을 생성하는 단계는, 상기 옥수수대, 목재칩 및 수지의 혼합비율을 40:50:10, 30:60:10, 70:25:5 및 60:35:5의 비율 중 어느 하나의 비율로 혼합하는 단계를 포함할 수 있다.In the step of generating the basic mixture, the mixing ratio of the cornstalk, wood chips, and resin is 40:50:10, 30:60:10, 70:25:5, and any one of the ratios of 60:35:5. It may include mixing in proportions.

상기 농산 부산물 파티클을 형성하는 단계는, 상기 기초혼합물을 몰드에 인입하는 단계; 상기 기초혼합물이 인입된 몰드를 가열하여 상기 농산 부산물 파티클을 형성하는 단계; 및 상기 농산 부산물 파티클을 몰드에서 탈형하는 단계를 포함할 수 있다.The forming of the agricultural by-product particles may include: introducing the basic mixture into a mold; Heating the mold into which the basic mixture is introduced to form the agricultural by-product particles; And it may include the step of demoulding the agricultural by-product particles from the mold.

상기 농산 부산물 파티클을 형성하는 단계는, 상기 기초혼합물을 두 개 이상의 롤 사이로 투입하는 단계; 및 상기 기초혼합물을 상기 두 개 이상의 롤 사이에서 가압하여 상기 농산 부산물 파티클을 형성하는 단계를 포함할 수 있다.The forming of the agricultural by-product particles may include: introducing the basic mixture between two or more rolls; And forming the agricultural by-product particles by pressing the base mixture between the two or more rolls.

본 발명에 의하면, 폐목재와 건설 및 생활부산물 도정과정에서 부산물로 발생하는 옥수수대와 같은 농산 부산물을 재활용하여 환경 친화적인 신 단열재를 개발할 수 있다.According to the present invention, it is possible to develop a new environmentally friendly insulating material by recycling waste wood and agricultural by-products such as corn cob generated as a by-product in the process of polishing waste wood and construction and household by-products.

옥수수대는 옥수수 생산이 계속되는 한 매년 얻을 수 있는 무한 자원이기때문에 농업부산물의 유효이용 및 환경보존 측면에서도 좋을 것으로 예상한다. Cornstalk is an infinite resource that can be obtained every year as long as corn production continues, so it is expected to be good in terms of effective use of agricultural by-products and environmental preservation.

부산물을 리제너레이션하여 만들어진 신 단열재는 지구온난화방지, 협약의 화석연료 소비절약 및 자원절약을 유도할 수 있을 뿐만 아니라 라이프 싸이클 코스트가 작은 자연 친화적인 건축재료로 보급될 수 있다. New insulation made by regeneration of by-products can not only prevent global warming, save fossil fuel consumption and save resources according to the Convention, but can also be distributed as a nature-friendly building material with a small life cycle cost.

또한, 신 단열재는 EPS를 대체함으로써 고갈되어 가는 화석연료를 보존하고, 친환경·저에너지 주거 공간 조성에 있어서 하나의 중요한 건축 재료가 될 수 있다고 기대한다.In addition, by replacing EPS, new insulation materials are expected to conserve depleted fossil fuels and become an important building material in creating eco-friendly and low-energy residential spaces.

이에 따라, 옥수수대, 폐목재 등 재활용에 따른 자원을 절약할 수 있고, 신단열재에 의한 EPS 단열재 대체로 화석에너지를 보존할 수 있다. Accordingly, it is possible to save resources due to recycling such as cornstalk and waste wood, and to conserve fossil energy by replacing the EPS insulation material with a new insulation material.

또한, 생화학적 분해성 환경친화형 신단열재로 개발할 수 있고 화재로부터 생명과 재산을 보호하는 친환경적 제품을 만들 수 있다. In addition, it can be developed as a biochemically degradable eco-friendly new insulation material and can make eco-friendly products that protect life and property from fire.

또한, 본 발명에 의하면, 환경오염 축소 및 환경부하 저감할 수 있고, 건물에너지절약기술의 개발, 건축 폐자재 등 폐자원의 재활용 및 리싸이클을 요구하는 기후변화협약 압력에 대처할 수 있다.In addition, according to the present invention, it is possible to reduce environmental pollution and reduce environmental load, and to cope with the pressure of climate change agreements that require the development of building energy saving technology, recycling and recycling of waste resources such as construction waste materials.

도1은 본 발명의 일 실시예에 따른 농산 부산물 파티클 제조방법을 설명하는 도면이다.1 is a diagram illustrating a method of manufacturing agricultural by-product particles according to an embodiment of the present invention.

기존의 합성 재료 기반 단열재를 천연재료 기반의 것으로 대체하기 위한 가장 대표적인 재료는 바로 목질재료라고 생각한다. 천연섬유질을 사용한 복합 단열재의 장점으로는 폐목재를 활용함으로써 원료 구입 비용이저렴하고, 제조과정이 단순하여 매우 경제적일 뿐만 아니라 단열성이 우수하고 유기질 단열재에 비하여 실내공기 오염이 없기 때문에 인간생활에 쾌적한 환경을 제공할 수 있게 된다. 또한 생산과정에 비교적 에너지의 사용량이 적고, 건물을 해체,폐기하여도 쉽게 부식되기 때문에 환경에 미치는 영향을 최소화 할 수 있다.I think that the most representative material for replacing the existing synthetic material-based insulation material with a natural material-based material is just wood material. The advantage of composite insulation made of natural fiber is that the raw material purchase cost is low by using waste wood, and the manufacturing process is simple, so it is not only very economical, but also has excellent insulation and no indoor air pollution compared to organic insulation materials. It becomes possible to provide an environment. In addition, the energy consumption is relatively low in the production process, and the impact on the environment can be minimized because it is easily corroded even if the building is dismantled or disposed.

목질재료는 재생 가능한 친환경 재료로 이들이 갖는 우수한 단열 및 조습 성능은 단열재의 원료로써 큰 장점으로 작용한다. 또한 목재 자체가 갖는 탄소 고정 효과에 기인하여 온실가스 저감에도 크게 기여할 수 있다. Wood materials are renewable eco-friendly materials, and their excellent thermal insulation and humidity control performance serves as a great advantage as a raw material for insulation. In addition, due to the carbon fixing effect of wood itself, it can greatly contribute to the reduction of greenhouse gases.

상기 목적을 실현하기 위한 본원에서 제시되는 기술사상은 본 발명의 농산 부산물 파티클의 건식에 의한 제조방법은 물을 사용하지 않으므로 신 단열재의 주성분인 옥수수대와 목재칩만으로 구성하는 공정이 된다.The technical idea presented herein for realizing the above object is that the method for manufacturing agricultural by-product particles of the present invention by dry method does not use water, so it is a process consisting only of cornstalks and wood chips, which are the main components of the new insulation material.

도1은 본 발명의 일 실시예에 따른 농산 부산물 파티클 제조방법을 설명하는 도면이다.1 is a diagram illustrating a method of manufacturing agricultural by-product particles according to an embodiment of the present invention.

도1을 참조하면, 옥수수대와 목재칩을 계량하여 각각의 싸이로에서 혼합박스로 이송한 후 리본믹서로 충분히 혼합 후 동시에 수지탱크의 페놀수지계 접착제를 노즐을 통해 분사시켜 성형재료의 표면에 얇게 도포되도록 한다.Referring to Fig. 1, cornstalks and wood chips are weighed and transferred from each silo to a mixing box, then sufficiently mixed with a ribbon mixer, and at the same time, the phenolic resin-based adhesive from the resin tank is sprayed through a nozzle to make it thin on the surface of the molding material. Let it be applied.

혼합이 충분히 이루어지면 Hot press에서 150℃까지 단계적으로 서서히 온도를 증가시키면서 가열한 후 상온에서 식힌 다음 몰드를 탈형한다. When the mixing is sufficiently done, heat it by gradually increasing the temperature to 150℃ in a hot press, cool at room temperature, and then demold the mold.

Hot press에 의한 방법은 실험실에서 소량의 샘플을 만들어 성능검토를 하기 위한 방법으로 채택하였으나 실제 다량 생산을 하면서 단열재의 크기를 다양하게 하기 위해서는 연속공정인 Roll press의 방법으로 생산하는 것이 바람직하다. The hot press method was adopted as a method to make a small amount of samples in the laboratory and to review the performance, but in order to vary the size of the insulation material while actually producing a large amount, it is preferable to produce it by a continuous process, the roll press method.

1) 보드의 제작1) Fabrication of the board

옥수수대와 목재칩의 혼합비율을 40:50, 30:60, 70:25. 60:35의 비율로 혼합하여 각 비율에서의 휨강도 값과 함수율, 밀도를 측정하여 최적 비율을 찾고자 한다. The mixing ratio of cornstalk and wood chips was 40:50, 30:60, 70:25. Mixing at a ratio of 60:35, and measuring the flexural strength value, moisture content, and density at each ratio to find the optimum ratio.

복합보드의 제작과 실험은 MDF의 표준 규격인 KS F 3200을 준용한다.For the production and experimentation of composite boards, the standard standard of MDF, KS F 3200, is applied.

보드의 크기는 35 x 35 x 1.6cm로 하며 그룹별로 5개씩 제작한다. 구체적인 보드 제조 조건은 Table 1과 2와 같다.The size of the board is 35 x 35 x 1.6cm, and 5 pieces are produced for each group. Specific board manufacturing conditions are shown in Tables 1 and 2.

2) 휨강도 실험 2) Flexural strength test

보드제조 후 실내에서 일주일 양생을 거친 후 휨강도 시편을 절취한다.After the board is manufactured, it is cured indoors for a week and then the flexural strength specimen is cut out.

35 cm × 35 cm × 1.5 cm 크기의 보드를 그룹별로 5개씩 제작하고 각 보드당 휨강도 실험 시편은 폭 5cm ,길이 30c로 6개씩을 절단하여 각 보드 6 그룹별로 총 30개씩의 휨강도 시편을 만든다. 길이방향으로 18개, 폭방향으로 12개를 구성한다.Five boards with a size of 35 cm × 35 cm × 1.5 cm were prepared for each group, and six specimens were cut for each board with a width of 5 cm and a length of 30 c to make a total of 30 flexural strength specimens for each 6 groups of boards. It consists of 18 in the length direction and 12 in the width direction.

KS F 3200의 기준을 따라 다음의 식에 의해 휨강도를 계산한다.According to the standards of KS F 3200, calculate the flexural strength by the following equation.

휨 강도 (MPa) = 3Pℓ/2bt² Flexural strength (MPa) = 3Pℓ/2bt²

P: 최대하중(N) / L: 스팬(mm) / b: 시험편의 너비(mm) / t: 시험편의 두께(mm)P: Maximum load (N) / L: Span (mm) / b: Width of test piece (mm) / t: Thickness of test piece (mm)

3) 함수율과 밀도 측정. 3) Moisture content and density measurement .

휨강도 실험을 실시한 시편에서 절취한 함수율 시편을 전건 시킨 후 전후 무게를 측정하여 함수율을 측정한다. 그리고 휨강도 실험을 실시한 시편에서 절취한 밀도 측정용 시편을 전건 시킨 후 전후 무게와 치수를 측정한다.After pre-drying the moisture content specimen cut from the specimen subjected to the flexural strength test, the moisture content is measured by measuring the weight before and after. Then, after pre-drying the specimen for density measurement, which was cut from the specimen subjected to the flexural strength test, the weight and dimensions were measured before and after.

신단열재의 제조방법에 대한 기본 원리는 농업 부산물인 옥수수대와 폐목재를 칩화하고 결합해 단열재로서의 충분한 성능을 갖도록 하는 것이다. 건식방법에 의해 만들어진 시편들을 단열재로서의 밀도, 함수율, 휨강도를 측정하여 열전도계수가 0.055~0.065 kcal/mh℃ 수준으로 목표한다.The basic principle for the manufacturing method of new insulation is to chip and combine cornstalk and waste wood, which are agricultural by-products, to have sufficient performance as insulation. By measuring the density, water content, and flexural strength of the specimens made by the dry method as insulation materials, the thermal conductivity coefficient is aimed at 0.055~0.065 kcal/mh℃.

Claims (5)

옥수수대, 목재칩 및 수지를 혼합하여 기초혼합물을 생성하는 단계; 및
상기 기초혼합물을 프레스 성형하여 농산 부산물 파티클을 형성하는 단계를 포함하는 것을 특징으로 하는 농산 부산물 파티클 제조방법.Mixing cornstalk, wood chips, and resin to produce a basic mixture; And
And forming particles of agricultural by-products by press-forming the basic mixture. 제1항에 있어서,
상기 기초혼합물을 생성하는 단계는,
상기 옥수수대, 목재칩 및 수지의 혼합비율을 40:50:10, 30:60:10, 70:25:5 및 60:35:5의 비율 중 어느 하나의 비율로 혼합하는 단계를 포함하는 것을 특징으로 하는 농산 부산물 파티클 제조방법.The method of claim 1,
The step of generating the basic mixture,
Including the step of mixing the mixing ratio of the cornstalk, wood chips and resin in any one ratio of 40:50:10, 30:60:10, 70:25:5 and 60:35:5 A method for manufacturing agricultural by-product particles, characterized by. 제1항에 있어서,
상기 농산 부산물 파티클을 형성하는 단계는,
상기 기초혼합물을 몰드에 인입하는 단계; 및
상기 기초혼합물이 인입된 몰드를 가열하여 상기 농산 부산물 파티클을 형성하는 단계; 및
상기 농산 부산물 파티클을 몰드에서 탈형하는 단계를 포함하는 것을 특징으로 하는 농산 부산물 파티클 제조방법.The method of claim 1,
The step of forming the agricultural by-product particles,
Introducing the base mixture into a mold; And
Heating the mold into which the basic mixture is introduced to form the agricultural by-product particles; And
A method for producing agricultural by-product particles comprising the step of demolding the agricultural by-product particles from a mold. 제1항에 있어서,
상기 농산 부산물 파티클을 형성하는 단계는,
상기 기초혼합물을 두 개 이상의 롤 사이로 투입하는 단계; 및
상기 기초혼합물을 상기 두 개 이상의 롤 사이에서 가압하여 상기 농산 부산물 파티클을 형성하는 단계를 포함하는 것을 특징으로 하는 농산 부산물 파티클 제조방법.The method of claim 1,
The step of forming the agricultural by-product particles,
Injecting the base mixture between two or more rolls; And
And forming the agricultural by-product particles by pressing the basic mixture between the two or more rolls. 제1항 내지 제4항 중 어느 한 항의 방법에 의해 제조되는 농산 부산물 파티클.The agricultural by-product particles produced by the method of any one of claims 1 to 4.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060102605A (en) 2005-03-24 2006-09-28 김태석 Manufacturing method of silicon carbide from rice husk and rice straw

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060102605A (en) 2005-03-24 2006-09-28 김태석 Manufacturing method of silicon carbide from rice husk and rice straw

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