KR100916534B1 - Waste rubber form and made method of the same that - Google Patents
Waste rubber form and made method of the same that Download PDFInfo
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- KR100916534B1 KR100916534B1 KR20080114199A KR20080114199A KR100916534B1 KR 100916534 B1 KR100916534 B1 KR 100916534B1 KR 20080114199 A KR20080114199 A KR 20080114199A KR 20080114199 A KR20080114199 A KR 20080114199A KR 100916534 B1 KR100916534 B1 KR 100916534B1
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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
- C08J9/0004—Use of compounding ingredients, the chemical constitution of which is unknown, broadly defined, or irrelevant
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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
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0404—Disintegrating plastics, e.g. by milling to powder
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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
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
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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
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/02—Copolymers with acrylonitrile
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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- Environmental & Geological Engineering (AREA)
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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
본 발명은 폐고무발포체를 이용한 고무발포체 및 그 제조방법에 관한 것으로서, 보다 상세하게는 탈황처리된 폐고무발포체를 사용하여 고무발포체를 제조함으로써 경제적이고 환경친화적인 고무발포체 및 새로운 방식의 고무발포체 제조방법 에 관한 것이다.The present invention relates to a rubber foam using a waste rubber foam and a method for manufacturing the same, more specifically, to manufacture a rubber foam using a desulfurized waste rubber foam to produce an economical and environmentally friendly rubber foam and a new type of rubber foam. It is about how.
고무발포체는 단열재, 완충재, 방진재 및 차음재 등의 여러 가지 용도로 각 분야에서 널리 사용되는 소재이다. 특히, 밀도가 0.040~0.120g/㎠ 정도의 고무고발포체는 단열성, 완충성, 방진성 및 흡음성 등이 우수한 장점으로 인해 사용 분야가 상당히 방대하고 사용량도 점차 증가되고 있다. Rubber foam is a material widely used in each field for a variety of uses, such as insulation, cushioning, dustproof and sound insulation. In particular, the rubber high foam having a density of about 0.040 to 0.120 g / cm 2 has a considerable field of use and its usage is gradually increased due to its excellent thermal insulation, buffering, dustproofing and sound absorption.
한편, 이러한 고무발포체의 폐기물은 산업폐기물로 분류되는데, 일반 고무제품과 달리 이러한 발포된 고무체의 재활용기술이 제안되지 않음으로 인해 폐고무발포체는 거의 전량이 매립 또는 소각되고 있으며, 이에 따른 환경오염이 발생되고 있다. 또한, 이러한 폐고무발포체의 처리에 많은 비용이 발생된다. On the other hand, the waste of rubber foam is classified as industrial waste. Unlike general rubber products, since the recycling technology of such foamed rubber is not proposed, almost all of the waste rubber foam is buried or incinerated, resulting in environmental pollution. Is occurring. In addition, a large cost is incurred in the treatment of such waste rubber foams.
본 발명은 상기의 문제점을 해결하기 위한 것으로서, 본 발명의 목적은 탈황처리된 폐고무발포체로 제조되므로 경제적이며, 환경친화적인 고무발포체를 제공하며, 또한, 생산효율이 우수하며 폐고무발포체의 고무물성을 변화시키지 않고 효과적으로 폐고무발포체를 탈황하여 고품질의 고무발포체를 제조하는 새로운 방식의 고무발포체 제조방법을 제공하는 것이다.The present invention has been made to solve the above problems, the object of the present invention is to manufacture a desulfurized waste rubber foam to provide an economical and environmentally friendly rubber foam, and also has excellent production efficiency and rubber of the waste rubber foam It is to provide a new method for producing a rubber foam to desulfurize the waste rubber foam without changing the physical properties to produce a high quality rubber foam.
본 발명에 따르면, 합성고무분말 100중량부에 대해 탈황처리된 폐고무발포체분말 1~100중량부, 발포제 및 발포조제 20~50중량부, 난연제 10~50중량부, 가교제 및 가교촉진제 5~10중량부, 배합유 20~30중량부를 포함하며, 상기 합성고무분말과 폐고무발포체 분말은 EPDM, NBR, IR, SBR, CR 중에서 적어도 하나로 선택되는 것을 특징으로 하는 폐고무발포체를 이용한 고무발포체가 제공된다. According to the present invention, 1 to 100 parts by weight of desulfurized waste rubber foam powder, 20 to 50 parts by weight of foaming agent and foaming aid, 10 to 50 parts by weight of flame retardant, crosslinking agent and crosslinking accelerator 5 to 10 parts by weight of synthetic rubber powder It includes 20 parts by weight to 30 parts by weight of the blended oil, wherein the synthetic rubber powder and the waste rubber foam powder is provided by a rubber foam using a waste rubber foam, characterized in that at least one selected from EPDM, NBR, IR, SBR, CR. do.
본 발명의 다른 특징에 따르면, 상기 폐고무발포체 분말은 입도가 1~80㎛인 것을 특징으로 하는 고무 발포체가 제공된다.According to another feature of the invention, the waste rubber foam is provided with a rubber foam, characterized in that the particle size of 1 ~ 80㎛.
본 발명의 또 다른 특징에 따르면, EPDM, IR, SBR, CR 중에서 적어도 하나로 이루어진 폐고무발포체를 1~80㎛ 입도로 분쇄하는 분쇄과정과, 상기 분쇄과정에서 얻어진 폐고무발포체분말을 탈황하는 탈황과정과, 상기 과정에서 탈황된 폐고무발포체분말을 사용하여 컴파운드를 제조하는 컴파운드제조과정과, 상기 컴파운드를 사용하여 고무발포체를 성형하는 발포성형과정을 포함하며, 상기 탈황과정은 130~200℃의 탈황챔버에 5~50kw의 전자파를 방사하여 이루어지고, 상기 컴파운드는 합성고무분말 100중량부에 대해 상기 탈황된 폐고무발포체분말 1~100중량부, 발포제 및 발포조제 20~50중량부, 난연제 10~50중량부, 가교제 및 가교촉진제 5~10중량부, 배합유 20~30중량부를 포함하는 것을 특징으로 하는 폐고무발포체를 이용한 고무발포체의 제조방법이 제공된다. According to another feature of the present invention, a pulverizing process of pulverizing the waste rubber foam composed of at least one of EPDM, IR, SBR, CR to 1 ~ 80㎛ particle size, and desulfurization process to desulfurize the waste rubber foam powder obtained in the crushing process And, a compound manufacturing process for producing a compound using the waste rubber foam foam powder desulfurized in the process, and a foam molding process for molding a rubber foam using the compound, the desulfurization process 130-200 ℃ desulfurization It is made by radiating an electromagnetic wave of 5 ~ 50kw to the chamber, the compound is based on 100 parts by weight of synthetic rubber powder 1 to 100 parts by weight of the desulfurized waste rubber foam, foaming agent and foaming aid 20 to 50 parts by weight, flame retardant 10 ~ Provided is a method for producing a rubber foam using waste rubber foam, comprising 50 parts by weight, 5 to 10 parts by weight of crosslinking agent and crosslinking accelerator, and 20 to 30 parts by weight of blended oil.
본 발명의 또 다른 특징에 다르면, NBR로 이루어진 폐고무발포체를 1~100㎜ 입도로 분쇄하는 1차분쇄과정과, 상기 1차분쇄된 폐고무발포체분말을 탈황하는 탈황과정과, 상기 탈황된 폐고무발포체분말을 1~80㎛ 입도로 재차 분쇄하는 2차분쇄과정과, 상기 2차분쇄된 폐고무발포체분말을 사용하여 컴파운드를 제조하는 컴파운드제조과정과, 상기 컴파운드를 사용하여 고무발포체를 성형하는 발포성형과정을 포함하며, 상기 탈황과정은 70~130℃의 탈황챔버에 5~50kw의 전자파를 방사하여 이루어지며, 상기 컴파운드는 합성고무분말 100중량부에 대해 상기 탈황된 폐고무발포체분말 1~100중량부, 발포제 및 발포조제 20~50중량부, 난연제 10~50중량부, 가교제 및 가교촉진제 5~10중량부, 배합유 20~30중량부를 포함하는 것을 특징으로 하는 폐고무발포체를 이용한 고무발포체의 제조방법이 제공된다. According to another feature of the present invention, the primary grinding process of pulverizing the waste rubber foam made of NBR to 1 ~ 100mm particle size, the desulfurization process of desulfurizing the primary pulverized waste rubber foam powder, and the desulfurized lung Secondary grinding process for crushing the rubber foam powder to 1 ~ 80㎛ particle size again, Compound manufacturing process for producing a compound using the second milled waste rubber foam powder, and Molding rubber foam using the compound It includes a foam molding process, the desulfurization process is made by radiating an electromagnetic wave of 5 ~ 50kw in a desulfurization chamber of 70 ~ 130 ℃, the compound is the desulfurized waste rubber foam powder 1 ~ 1 to 100 parts by weight of synthetic rubber powder Rubber foot using waste rubber foam, characterized in that it comprises 100 parts by weight, 20 to 50 parts by weight of foaming agent and foaming aid, 10 to 50 parts by weight of flame retardant, 5 to 10 parts by weight of crosslinking agent and crosslinking accelerator, and 20 to 30 parts by weight of blended oil. The production method of the body is provided.
이상과 같은 본 발명은 폐고무발포체를 탈황하여 고무발포체 제조에 사용함으로써, 경제적이고 환경친화적이다. 특히, 탈황된 폐고무발포체를 분말화하고, 그 분말을 새 합성고무분말을 비롯한 원료들과 혼합하여 컴파운드를 만들고, 이 컴파운드를 이용하여 고무발포체를 제조하는데, 탈황된 폐고무발포체를 사용함으로 인한 품질저하를 막기 위해 새 합성고무를 사용하는 경우의 원료배합비율와 차별화되는 원료배합비를 제안함으로써, 새 합성고무만으로 제조된 고무발포체와 동등 수준의 품질을 가지는 고무발포체를 제조한다. As described above, the present invention is economical and environmentally friendly by desulfurizing waste rubber foams and using them for rubber foam production. In particular, powdered desulfurized waste rubber foams are mixed, and the powders are mixed with raw materials including new synthetic rubber powders to make compounds, and the rubber foams are manufactured using the compounds, resulting from the use of desulfurized waste rubber foams. In order to prevent the quality deterioration, the raw material blending ratio is differentiated from the raw material blending ratio when the new synthetic rubber is used, thereby producing a rubber foam having the same level of quality as the rubber foam produced only with the new synthetic rubber.
특히, 상대적으로 용융점이 높은 EPDM, IR, SBR, CR로 이루어진 폐고무발포체를 복수의 분쇄과정을 통해 1~80㎛ 정도의 입도를 가지도록 분쇄하여 탈황을 함으로써, 탈황이 촉진되어 탈황시간이 단축되고, 탈황효과도 우수하다. 반면에 상대적으로 용융점이 낮은 NBR은 1차분쇄 후 탈항을 하고 2차분쇄함으로써, 탈화과정에서 NBR이 탄화되어 변질되는 것이 방지된다. 또한, 전자파를 이용하여 탈황처리를 하되, 폐고무발포체의 종류에 따라 탈황처리온도와 전자파 출력을 조절함으로써, 폐고무발포체가 탄화되는 등 변질되지 않고 효과적인 탈황이 이루어진다. In particular, waste rubber foam composed of EPDM, IR, SBR, and CR having a relatively high melting point is pulverized to have a particle size of 1 to 80 μm through a plurality of grinding processes, thereby promoting desulfurization and shortening desulfurization time. It is also excellent in desulfurization effect. On the other hand, NBR, which has a relatively low melting point, decomposes after the first milling and second milling, thereby preventing the NBR from being carbonized and deteriorated during the deoxidation. In addition, the desulfurization treatment using electromagnetic waves, by controlling the desulfurization treatment temperature and the electromagnetic wave output according to the type of waste rubber foam, effective desulfurization is achieved without deterioration such as carbonization of the waste rubber foam.
이와 같은 본 발명은 폐고무발포체의 재활용을 가능하게 함으로써. 자원재활용성이 우수하여 환경친화적이며, 경제성도 우수하다. Such the present invention by enabling the recycling of the waste rubber foam. It is environmentally friendly and economical because of excellent resource recycling.
이하에서 본 발명의 바람직한 실시예를 설명한다.Hereinafter, preferred embodiments of the present invention will be described.
본 발명은 폐고무발포체를 사용하여 제조된 고무발포체 및 그 제조방법에 관한 것으로서, 그 구체적인 제조방법은 다음과 같다. 먼저, 수집된 폐고무발포체를 1~100㎜ 정도의 입도로 1차분쇄한다. 폐고무발포체로는 EPDM, NBR, IR, SBR, CR 등이 사용된다. 이들 고무는 단독적으로 사용되는데, 경우에 따라 EPDM, IR, SBR, CR는 혼합되어 사용될 수도 있다. 1차분쇄하여 얻어진 분말을 1~80㎛정도의 미세한 입도로 2차분쇄한다. 이러한 2차분쇄를 통해 폐고무발포체가 미분화되면 후술하는 탈황과정에서의 탈황처리시간이 단축되고, 폐고무발포체를 이용해 컴파운드제조시 원료가 균일하게 효과적으로 잘 배합되는 장점이 있다. 바람직하게는 2차분쇄과정에서는 분말이 40~60㎛ 정도의 입도를 갖도록 분쇄한다.The present invention relates to a rubber foam produced using a waste rubber foam and a method for manufacturing the same, the specific manufacturing method is as follows. First, the collected waste rubber foam is first ground to a particle size of about 1 ~ 100㎜. As waste rubber foams, EPDM, NBR, IR, SBR, CR, etc. are used. These rubbers are used alone, and in some cases EPDM, IR, SBR, CR may be mixed. The powder obtained by the 1st grinding | pulverization is secondary grinding | pulverization to the fine particle size of about 1-80 micrometers. When the waste rubber foam is micronized through such secondary grinding, the desulfurization treatment time in the desulfurization process described below is shortened, and raw materials are uniformly and effectively mixed well when the compound is manufactured using the waste rubber foam. Preferably, in the secondary grinding process, the powder is ground to have a particle size of about 40 ~ 60㎛.
상기 2차분쇄과정에서 얻어진 폐고무발포체분말을 탈황처리한다. 탈황처리는 전자파를 이용하는 방법, 약품을 이용하는 방법, 스팀을 이용하는 방법, 등 여러 가지 방법을 이용할 수 있으나, 바람직하게는 전자파를 이용한 탈황처리방법을 사용한다. 전자파를 이용한 탈황처리방법은 다른 방법에 비해, 탈황시간이 단축되고, 균일한 탈황이 이루어지며, 냄새가 적게 발생되며, 상대적으로 낮은 온도에서 이루어지므로 에너지가 절감되는 장점이 있다. The waste rubber foam powder obtained in the secondary grinding process is desulfurized. The desulfurization treatment may use various methods such as a method using electromagnetic waves, a method using chemicals, a method using steam, and the like. Preferably, a desulfurization treatment method using electromagnetic waves is used. The desulfurization method using electromagnetic waves has the advantage of shortening the desulfurization time, uniform desulfurization, less odor, and relatively low temperature, compared to other methods.
전자파를 이용한 탈황처리는 탈황챔버에 상기 폐고무발포체분말을 넣고 가온 및 전자파를 방사하여 이루어진다. 바람직하게는 탈황챔버의 온도는 폐고무발포체가 EPDM, IR, SBR, CR 로 이루어진 경우에는 130~200℃로, 폐고무발포체가 NBR인 경우에는 70~130℃로 조절된다. 그리고 전자파출력은 5~50kw로 정도로 조절된다. 본 발명에서는 탈황처리온도를 처리되는 폐고무발포체의 용융점 정도로 조절하여 탈황과정에서 폐고무발포체가 탄화되어 변질되지 않으면서 효과적인 탈황이 이루어지도록 한다. 이러한 탈황과정은 상기와 같은 조건에서 10분~1시간 정도 처리하여 이루어지는데, 상대적으로 탈황온도가 높고, 전자파출력이 높을수록 탈황시간은 단축된다. Desulfurization treatment using electromagnetic waves is carried out by putting the waste rubber foam powder into a desulfurization chamber and radiating warming and electromagnetic waves. Preferably the temperature of the desulfurization chamber is adjusted to 130 ~ 200 ℃ when the waste rubber foam is composed of EPDM, IR, SBR, CR, 70 ~ 130 ℃ when the waste rubber foam is NBR. And the electromagnetic wave output is adjusted to about 5 ~ 50kw. In the present invention, the desulfurization treatment temperature is adjusted to the melting point of the treated waste rubber foam so that the waste rubber foam is carbonized in the desulfurization process so that effective desulfurization is achieved. The desulfurization process is carried out by treatment for about 10 minutes to 1 hour under the above conditions. The higher the desulfurization temperature and the higher the electromagnetic wave output, the shorter the desulfurization time is.
이러한 탈황과정을 통해 탈황된 폐고무발포체 분말을 사용하여 제품을 성형하기 위한 컴파운드를 제조한다. 일반적으로 고무발포체를 제조하기 위한 컴파운드는 합성고무분말 100중량부에 대해 발포체 및 발포조제 12~15중량부, 난연재 25~30중량부, 가교제 및 가교촉진제 4~6중량부, 배합유 20~25중량부 및 충진재 50~55중량부로 이루어진다. Through the desulfurization process, a compound for molding a product is manufactured using the desulfurized waste rubber foam powder. Generally, the compound for preparing the rubber foam is 12 to 15 parts by weight of foam and foaming aid, 25 to 30 parts by weight of flame retardant, 4 to 6 parts by weight of crosslinking agent and crosslinking accelerator, and blended oil 20 to 25 parts by weight of 100 parts of synthetic rubber powder. It is composed of 50 parts by weight and 55 parts by weight of the filler.
그러나 본 발명에서 얻어진 탈황된 폐고무발포체 분말은 새 합성고무분말보다 점도가 10~20% 정도 높기 때문에 상기와 같은 새 합성고무를 사용하는 일반적인 배합비율로 원료를 배합하면 고품질의 고무발포체를 얻을 수 없다. 또한, 탈황된 폐고무발포체를 상대적으로 많이 사용하면 폐고무발포체의 재활용율은 증가되나, 폐고무발포체의 사용량이 증가될수록 제품의 표면평활도 및 단열성, 내투습성 등을 비롯하여 발포균일도가 저하되어 제품의 품질이 저하될 우려가 높다. 따라서 이러한 점을 고려하여 원료의 배합비율이 조절되는데, 바람직하게는 합성고무분말 100중량부에 대해 탈황된 폐고무발포체 분말 1~100중량부, 발포체 및 발포조제 20~50중량부, 난연재 10~50중량부, 가교체 및 가교촉진제 5~10중량부, 배합유 20~30중량부, 및 충진재 50~70중량부로 배합하여 컴파운드를 제조한다. However, since the desulfurized waste rubber foam powder obtained in the present invention has a viscosity of about 10 to 20% higher than that of the new synthetic rubber powder, high-quality rubber foam can be obtained by blending the raw materials in a general blending ratio using the new synthetic rubber as described above. none. In addition, the relatively high use of desulfurized waste rubber foams increases the recycling rate of waste rubber foams. There is a high possibility of quality deterioration. Therefore, in consideration of this point, the blending ratio of the raw material is controlled. Preferably, 1 to 100 parts by weight of the desulfurized waste rubber foam powder with respect to 100 parts by weight of synthetic rubber powder, 20 to 50 parts by weight of foam and foaming aid, and 10 to flame retardant A compound is prepared by blending 50 parts by weight, 5 to 10 parts by weight of the crosslinked product and the crosslinking accelerator, 20 to 30 parts by weight of the blended oil, and 50 to 70 parts by weight of the filler.
특히 바람직하게는 표면평활도가 높은 단열재를 제조하는 경우에는 새 합성 고무 100중량부에 대해 탈황된 폐고무발포체가 5~15중량부, 완충재, 방진재 및 흡음재를 제조하는 경우에는 탈황된 폐고무발포체가 20~50중량부, 상대적으로 높은 수준의 표면평활도를 요구하지 않는 보도블록용 고무블록을 제조하는 경우에는 탈황된 폐고무발포체가 50~100중량부로 배합된다. Particularly preferably, 5 to 15 parts by weight of desulfurized waste rubber foams for 100 parts by weight of new synthetic rubber is used in the case of manufacturing a high surface smoothness heat insulating material, and desulfurized waste rubber foams is produced in the case of manufacturing buffer, dustproof and sound absorbing materials. In the case of manufacturing a rubber block for a sidewalk block that does not require 20 to 50 parts by weight and a relatively high level of surface smoothness, the desulfurized waste rubber foam is blended into 50 to 100 parts by weight.
이와 같이 원료를 배합하여 믹싱함으로써 컴파운드가 얻어진다. 이때 믹싱온도와 믹싱시간은 새 합성고무만을 사용하는 경우에 비해 5~10% 정도 상승, 연장시킨다. 탈황된 폐고무발포체 분말의 입도가 작을수록 균일한 배합이 이루어지는데, 전술한 바와 같이, 폐고무발포체분말이 1~80㎛ 정도로 미분화되어 있으므로 믹싱시간이 단축되고 생산성은 향상된다. 이러한 과정을 통해 얻어진 컴파운드를 발포금형에 주입하거나 발포터널을 통과시켜 고무발포체를 성형한다. 바람직하게는 밀도가 0.040~0.120g/㎠ 정도의 고발포체를 제조한다. Thus, a compound is obtained by mix | blending and mixing a raw material. At this time, the mixing temperature and mixing time are increased and extended about 5 ~ 10% compared to the case of using only new synthetic rubber. The smaller the particle size of the desulphurized waste rubber foam powder is, the more uniform the formulation is. As described above, since the waste rubber foam powder is finely divided to about 1 to 80 µm, the mixing time is shortened and productivity is improved. The compound obtained through this process is injected into a foam mold or passed through a foam tunnel to form a rubber foam. Preferably, a high foam having a density of about 0.040 to 0.120 g / cm 2 is prepared.
이상에서는 폐고무발포체를 2차분쇄한 후 탈황처리하는 것으로 설명하였으나, 바람직하게는 NBR은 1차분쇄만 하여 탈황처리하고, 탈황처리 후에 2차분쇄한다. NBR은 다른 합성고무에 비해 상대적으로 용융점이 낮기 때문에 분말을 미분화여 탈황을 하면 NBR이 탈황과정에서 탄화될 가능성이 높기 때문에 이를 방지하기 위해 1차분쇄 후에 탈황을 하는 것이 바람직하다. 그리고 NBR 폐고무발포체를 탈황 후에 2차분쇄하는 것은 컴파운드 제조시 폐고무발포체 분말이 다른 원료들과 효과적으로 믹싱되도록 하기 위한 것이다. 물론, EPDM, IR, SBR, CR도 1차분쇄 후 탈황하는 방법을 적용할 수도 있으나, 이들 고무는 탈황효과면에서 2차분쇄 후에 탈황하는 것이 바람직하다. In the above, the waste rubber foam was described as secondary sulfurization after secondary grinding, but preferably, NBR is desulfurized only by primary grinding and secondary grinding after desulfurization treatment. Since NBR has a lower melting point than other synthetic rubbers, it is preferable to desulfurize after primary pulverization in order to prevent the NBR from carbonizing during desulfurization. The secondary grinding of the NBR waste rubber foam after desulfurization is to allow the waste rubber foam powder to be effectively mixed with other raw materials during compound preparation. Of course, EPDM, IR, SBR, CR may also be applied to the desulfurization method after the primary grinding, these rubbers are preferably desulfurized after the secondary grinding in terms of desulfurization effect.
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| KR20220001041A (en) | 2020-06-26 | 2022-01-05 | 문성철 | High flame resistant and eco-friendly rubber-base masterbatch with polymer nanocomposites |
| KR20220001046A (en) | 2020-06-26 | 2022-01-05 | 문성철 | Method for manufacturing highly flame resistant and eco-friendly rubber-based nanocomposite foam using waste rubber foam powder |
| KR20220001045A (en) | 2020-06-26 | 2022-01-05 | 문성철 | Highly flame resistant and eco-friendly rubber-based nanocomposite masterbatch using waste rubber foam powder |
| KR20220001042A (en) | 2020-06-26 | 2022-01-05 | 문성철 | Manufacturing method of high flame resistant and eco-friendly rubber-based nanocomposite foam |
| KR20220004470A (en) * | 2020-07-03 | 2022-01-11 | (주)세창이노베이션 | Recycled foam composition comprising high content of waste foam scrap, recycled foam produced using same, and method for manufacturing recycled foam |
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| KR20220001045A (en) | 2020-06-26 | 2022-01-05 | 문성철 | Highly flame resistant and eco-friendly rubber-based nanocomposite masterbatch using waste rubber foam powder |
| KR20220001042A (en) | 2020-06-26 | 2022-01-05 | 문성철 | Manufacturing method of high flame resistant and eco-friendly rubber-based nanocomposite foam |
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