KR20240019619A - Shoe outsole composition using regenerated rubber and manufacturing method therefor - Google Patents
Shoe outsole composition using regenerated rubber and manufacturing method therefor Download PDFInfo
- Publication number
- KR20240019619A KR20240019619A KR1020220097521A KR20220097521A KR20240019619A KR 20240019619 A KR20240019619 A KR 20240019619A KR 1020220097521 A KR1020220097521 A KR 1020220097521A KR 20220097521 A KR20220097521 A KR 20220097521A KR 20240019619 A KR20240019619 A KR 20240019619A
- Authority
- KR
- South Korea
- Prior art keywords
- weight
- parts
- rubber
- waste
- recycled
- Prior art date
Links
- 229920001971 elastomer Polymers 0.000 title claims abstract description 116
- 239000005060 rubber Substances 0.000 title claims abstract description 116
- 239000000203 mixture Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 62
- 230000008569 process Effects 0.000 claims abstract description 59
- 239000002699 waste material Substances 0.000 claims abstract description 43
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 15
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 15
- 229920001194 natural rubber Polymers 0.000 claims abstract description 15
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 13
- 239000011701 zinc Substances 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 238000013329 compounding Methods 0.000 claims abstract description 11
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 9
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000008117 stearic acid Substances 0.000 claims abstract description 9
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 8
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 8
- 239000004094 surface-active agent Substances 0.000 claims abstract description 8
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 24
- 208000005156 Dehydration Diseases 0.000 claims description 23
- 230000018044 dehydration Effects 0.000 claims description 23
- 238000006297 dehydration reaction Methods 0.000 claims description 23
- 239000003921 oil Substances 0.000 claims description 22
- 235000019198 oils Nutrition 0.000 claims description 22
- 239000012535 impurity Substances 0.000 claims description 10
- 238000004898 kneading Methods 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 4
- 230000000704 physical effect Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 239000004014 plasticizer Substances 0.000 claims description 3
- 239000010734 process oil Substances 0.000 claims description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 3
- 239000008158 vegetable oil Substances 0.000 claims description 3
- 229920003051 synthetic elastomer Polymers 0.000 abstract description 13
- 239000005061 synthetic rubber Substances 0.000 abstract description 13
- 238000003912 environmental pollution Methods 0.000 abstract description 5
- 239000002440 industrial waste Substances 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000013019 agitation Methods 0.000 abstract 1
- 239000004615 ingredient Substances 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 11
- 229920003048 styrene butadiene rubber Polymers 0.000 description 9
- 239000005062 Polybutadiene Substances 0.000 description 8
- 229920002857 polybutadiene Polymers 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 4
- 229920002943 EPDM rubber Polymers 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- 239000004971 Cross linker Substances 0.000 description 3
- 239000002174 Styrene-butadiene Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical compound C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 description 1
- -1 accelerators Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 150000004659 dithiocarbamates Chemical class 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 150000002357 guanidines Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 150000003557 thiazoles Chemical class 0.000 description 1
- 150000003585 thioureas Chemical class 0.000 description 1
- KUAZQDVKQLNFPE-UHFFFAOYSA-N thiram Chemical compound CN(C)C(=S)SSC(=S)N(C)C KUAZQDVKQLNFPE-UHFFFAOYSA-N 0.000 description 1
- 229960002447 thiram Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L17/00—Compositions of reclaimed rubber
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
-
- 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
- B29B17/02—Separating plastics from other materials
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
-
- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L7/00—Compositions of natural rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
- C08L91/06—Waxes
-
- 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
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0893—Zinc
Landscapes
- 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)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
본 발명은 고무폐기물을 신발 아웃솔 재료로 재활용하여 산업쓰레기 감소로 환경오염을 줄이면서 탄소 배출을 효과적으로 저감시킬 수 있는 재생고무를 이용한 신발 아웃솔 조성물 및 그 제조방법을 제공코자 하는 것이다.
즉, 본 발명은 재생고무 100 중량부에 대하여, 천연고무 15~30 중량부, 실리카 50~60 중량부, 배합유 5~10 중량부, 스테아린산(Stearic acid) 0.5~1.5 중량부, 산화방지제 0.5~1.5 중량부, 아연 2~5 중량부, 계면활성제 5~6 중량부, 촉진제 1~3 중량부, 가교제 2~4 중량부로 이루어지는 것을 특징으로 한다.
상기 재생고무를 이용한 신발 아웃솔 조성물 및 그 제조방법을 이용하면, 합성고무 폐기물이 수회에 걸쳐 단계적으로 압착 교반되는 과정 중에 수분이 효과적으로 제거됨과 더불어 혼합 성분들이 긴밀하게 용합되어 천연고무 사용량을 최소화한 조건에서 아웃솔 조성물이 겉창 성능기준을 충족할 수 있다는 장점이 있다. The present invention seeks to provide a shoe outsole composition using recycled rubber and a manufacturing method thereof that can effectively reduce carbon emissions while reducing environmental pollution by reducing industrial waste by recycling rubber waste into shoe outsole materials.
That is, the present invention contains 15 to 30 parts by weight of natural rubber, 50 to 60 parts by weight of silica, 5 to 10 parts by weight of compounding oil, 0.5 to 1.5 parts by weight of stearic acid, and 0.5 parts by weight of antioxidant, based on 100 parts by weight of recycled rubber. It is characterized in that it consists of ~1.5 parts by weight, 2-5 parts by weight of zinc, 5-6 parts by weight of surfactant, 1-3 parts by weight of accelerator, and 2-4 parts by weight of cross-linking agent.
Using the shoe outsole composition using recycled rubber and its manufacturing method, moisture is effectively removed during the process of step-by-step compression and agitation of synthetic rubber waste several times, and the mixed ingredients are closely fused to minimize the amount of natural rubber used. There is an advantage in that the outsole composition can meet the outsole performance standards.
Description
본 발명은 재생고무를 이용한 신발 아웃솔 조성물 및 그 제조방법으로서, 이를 보다 상세히 설명하면 고무폐기물을 신발 아웃솔 재료로 재활용하여 산업쓰레기 감소로 환경오염을 줄이면서 탄소 배출을 효과적으로 저감시킬 수 있는 재생고무를 이용한 신발 아웃솔 조성물 및 그 제조방법에 관한 것이다.The present invention is a shoe outsole composition using recycled rubber and a method for manufacturing the same. To describe this in more detail, the present invention provides recycled rubber that can effectively reduce carbon emissions while reducing environmental pollution by reducing industrial waste by recycling rubber waste as shoe outsole material. It relates to the shoe outsole composition used and its manufacturing method.
통상 고분자 및 고무 폐기물은 대부분 썩지 않고 환경오염의 원인이 되므로 자원을 유효 적절히 활용함과 동시에 환경오염을 방지하기 위하여 전 세계적으로 고분자 및 고무재료를 포함한 산업폐기물의 처리 및 재활용 방안에 대해 연구가 꾸준히 이루어지고 있다.Since most polymer and rubber wastes do not rot and cause environmental pollution, research is being conducted around the world on methods for processing and recycling industrial waste, including polymer and rubber materials, in order to effectively utilize resources and prevent environmental pollution. It is being done.
이러한 산업폐기물 가운데서 타이어, 신발 및 각종 산업용 부품 등으로 광범위하게 사용되는 고무제품으로 인해 발생되는 고무폐기물은 자연분해가 되지 않음으로써 수질, 토양 및 대기오염 등의 환경오염을 유발시키는 주요 원인이 되고 있다.Among these industrial wastes, rubber waste generated from rubber products that are widely used in tires, shoes, and various industrial parts does not decompose naturally, becoming a major cause of environmental pollution such as water, soil, and air pollution. .
이에 종래에 개시된 등록특허 10-0583417호에서, 범용고무 50 ∼ 90 중량%와 재생고무 10 ∼ 50 중량%를 기재고무로 하고, 고무용 첨가제 및 보강성 충진제를 포함하는 고무 혼합물에, 기재고무 100 중량부에 대하여 금속계 가교조제 0.1 ∼ 5 중량부; 유기과산화물 0.05 ∼ 10 중량부; 및 황과; 알데히드·암모니아류, 알데히드·아민류, 구아니딘류, 티오우레아류, 티아졸류, 술펜아미드류, 티우람류 및 디티오카르바민산염류 중에서 선택된 1 종 또는 2 종 이상 가황촉진재를 포함하는 황가교기구 0.1∼ 10 중량부로 이루어진 혼성가교기구를 포함하는 기술이 선 제시된바 있다.Accordingly, in previously disclosed patent registration number 10-0583417, 50 to 90% by weight of general-purpose rubber and 10 to 50% by weight of recycled rubber were used as base rubber, and 100% of base rubber was added to the rubber mixture containing rubber additives and reinforcing fillers. 0.1 to 5 parts by weight of a metal crosslinking aid per part by weight; 0.05 to 10 parts by weight of organic peroxide; and Hwanggwa; A sulfur cross-linking mechanism containing one or two or more vulcanization accelerators selected from aldehydes, ammonia, aldehydes, amines, guanidines, thioureas, thiazoles, sulfenamides, thiurams, and dithiocarbamates. A technology including a hybrid crosslinking mechanism consisting of 0.1 to 10 parts by weight has been previously proposed.
또한, 다른 종래기술인 등록특허 10-2104716호에서, 재생고무, 천연 고무 및 부타디엔 고무를 포함하는 기재 고무 100중량부에 대해, 하기 화학식 1로 표시되는 황 공여제 03~10중량부 및 가교촉진제 05~15중량부를 포함하고, 상기 기재 고무 중 상기 재생고무의 함량은 40중량% 이상이고, 상기 기재 고무 중 상기 천연 고무의 함량은 30중량% 이상이고, 상기 기재 고무 중 상기 부타디엔 고무의 함량은 30중량% 이하이고, 상기 가교촉진제는 티아졸계 촉진제 60~80중량% 및 티우람계 촉진제 20~40중량%를 포함하고, KS M6518에 준하여 아스커(Asker) A형 경도계를 사용하여 측정한 경도는 70~72이고, KS M6518에 준하여 측정한 인열강도는 87~93kgf/cm이고, NBS 마모시험기(KS M6625)를 사용하여 측정한 내마모성은 215~253%인 신발 겉창용 고무 조성물을 제조하는 기술이 선 등록된 바 있다.In addition, in Patent No. 10-2104716, which is another prior art, for 100 parts by weight of base rubber containing recycled rubber, natural rubber and butadiene rubber, 03 to 10 parts by weight of sulfur donor represented by the following formula (1) and crosslinking accelerator 05 Contains ~15 parts by weight, the content of the recycled rubber in the base rubber is 40% by weight or more, the content of the natural rubber in the base rubber is 30% by weight or more, and the content of the butadiene rubber in the base rubber is 30% by weight. % by weight or less, and the crosslinking accelerator includes 60 to 80 wt% of a thiazole accelerator and 20 to 40 wt% of a thiuram accelerator, and the hardness measured using an Asker A type hardness tester in accordance with KS M6518 is 70~72, tear strength measured according to KS M6518 is 87~93kgf/cm, and abrasion resistance measured using NBS abrasion tester (KS M6625) is 215~253%. Technology for manufacturing a rubber composition for shoe outsoles. This line has been registered.
그러나, 상기 종래기술들은 재생고무를 사용하여 기계적 물성을 유지면서, 내마모성이 향상된 신발겉창용 조성물을 제공하려는 것이나, 재생고무에 포함된 비닐, 나무조각, 오일덩어리를 포함하는 불순물 선별이 어렵고, 특히, 재생고무에 수분함량이 높은 경우 신발겉창 제조시 성형불량을 초래하는 문제점이 따랐다.However, the above prior arts are intended to provide compositions for shoe outsoles with improved wear resistance while maintaining mechanical properties by using recycled rubber, but it is difficult to select impurities including vinyl, wood chips, and oil chunks contained in the recycled rubber, and in particular, , when the moisture content of recycled rubber is high, there is a problem of causing molding defects when manufacturing shoe outsole.
본 발명에서는 상기한 종래 기술의 제반 문제점들을 해결코자 새로운 기술을 창안한 것으로서, 합성고무 폐기물이 수회에 걸쳐 단계적으로 압착 교반되는 과정 중에 수분이 효과적으로 제거됨과 더불어 혼합 성분들이 긴밀하게 용합되어 천연고무 사용량을 최소화한 조건에서 아웃솔 조성물이 겉창 성능기준을 충족할 수 있는 재생고무를 이용한 신발 아웃솔 조성물 및 그 제조방법을 제공하는 것에 그 목적이 있다.In the present invention, a new technology was created to solve all the problems of the prior art described above. During the process of compressing and stirring synthetic rubber waste in stages several times, moisture is effectively removed and the mixed components are closely fused to reduce the amount of natural rubber used. The purpose is to provide a shoe outsole composition using recycled rubber and a manufacturing method thereof that can meet the outsole performance standards under conditions that minimize the.
이와 함께 별도로 기술하지는 않았으나 하기의 발명을 실시하기 위한 구체적인 내용과 청구범위를 감안하여 유추할 수 있는 범위 내의 또 다른 목적들도 본 발명의 전체 과제에 포함되도록 한다.In addition, although not separately described, other purposes within the scope that can be inferred considering the specific details and claims for carrying out the invention below are also included in the overall subject of the present invention.
상기한 발명의 과제를 해결하기 위한 구체적인 수단으로 본 발명에서는 재생고무를 이용한 신발 아웃솔 조성물을 구성하되, 재생고무 100 중량부에 대하여, 천연고무 15~30 중량부, 실리카 50~60 중량부, 배합유 5~10 중량부, 스테아린산(Stearic acid) 0.5~1.5 중량부, 산화방지제 0.5~1.5 중량부, 아연 2~5 중량부, 계면활성제 5~6 중량부, 촉진제 1~3 중량부, 가교제 2~4 중량부로 이루어지는 것을 특징으로 한다.As a specific means to solve the problem of the invention described above, the present invention constitutes a shoe outsole composition using recycled rubber, comprising: 15 to 30 parts by weight of natural rubber, 50 to 60 parts by weight of silica, per 100 parts by weight of recycled rubber. 5 to 10 parts by weight of oil, 0.5 to 1.5 parts by weight of stearic acid, 0.5 to 1.5 parts by weight of antioxidant, 2 to 5 parts by weight of zinc, 5 to 6 parts by weight of surfactant, 1 to 3 parts by weight of accelerator, 2 parts by weight of crosslinker It is characterized in that it consists of ~4 parts by weight.
이때, 상기 배합유는 프로세스오일(process oil), DOP, 파라핀 왁스, 식물성 오일, 절연오일 중 1종 이상을 사용하고, 연화제, 가소제기능을 수행하도록 구비되는 것을 특징으로 한다.At this time, the compounding oil uses one or more of process oil, DOP, paraffin wax, vegetable oil, and insulating oil, and is characterized in that it is equipped to perform the functions of a softener and plasticizer.
또한, 상기 아연은 가류촉진제로서, 투명성 고무재질에 투명아연(T-AZO)이 적용되고, 불투명성 고무에 산화아연(ZNO)이 사용되도록 구비되는 것을 특징으로 한다.In addition, the zinc is a vulcanization accelerator, and is characterized in that transparent zinc (T-AZO) is applied to the transparent rubber material, and zinc oxide (ZNO) is used to the opaque rubber.
그리고, 본 발명에 따른 재생고무를 이용한 신발 아웃솔 조성물 제조방법은, 고무폐기물에 포함된 불순물을 분리하면서 고무폐기물을 종류별로 분류하는 선별공정(S10); 상기 선별공정(S10)을 거쳐 분류된 고무폐기물을 90~120℃에서 6~10kg/㎠ 압력으로 압착 성형하면서 수분을 제거하는 1차 탈수공정(S20); 상기 1차 탈수공정(S20)을 거친 고무폐기물을 8~12mm 두께로 압착 성형하여 열과 함께 수분을 방출하는 1차 냉각공정(S30); 상기 1차 냉각공정(S30)을 거친 고무폐기물을 60~90℃ 조건에서 1분당 10~30회 회전하는 압출스크류로 압출 성형하면서 수분을 제거하고, 고무폐기물이 압출 이송되는 중에 여과망을 통과시켜 불순물을 제거하는 2차 탈수공정(S40); 상기 2차 탈수공정(S40)을 거친 고무폐기물을 소정의 크기로 가공하여 상온에서 자연 냉각하여 재생고무를 제조하는 2차 냉각공정(S50); 및 상기 2차 냉각공정(S50)에서 제조된 재생고무 100 중량부에 대하여, 천연고무 15~30 중량부, 실리카 50~60 중량부, 배합유 5~10 중량부, 스테아린산(Stearic acid) 0.5~1.5 중량부, 산화방지제 0.5~1.5 중량부, 아연 2~5 중량부, 계면활성제 5~6 중량부, 촉진제 1~3 중량부, 가교제 2~4 중량부를 혼합하는 아웃솔 조성물 배합단계(S60);를 포함하는 것을 특징으로 한다.In addition, the method of manufacturing a shoe outsole composition using recycled rubber according to the present invention includes a screening process (S10) of classifying the rubber waste by type while separating impurities contained in the rubber waste; A first dehydration process (S20) in which the rubber waste classified through the selection process (S10) is compressed and molded at a pressure of 6 to 10 kg/cm2 at 90 to 120°C to remove moisture; A first cooling process (S30) in which the rubber waste that has undergone the first dehydration process (S20) is pressed and molded to a thickness of 8 to 12 mm to release moisture along with heat; The rubber waste that has gone through the first cooling process (S30) is extruded at 60 to 90°C with an extrusion screw rotating 10 to 30 times per minute to remove moisture, and the impurities are removed by passing the rubber waste through a filter net while being extruded and transported. Secondary dehydration process (S40) to remove; A secondary cooling process (S50) of manufacturing recycled rubber by processing the rubber waste that has gone through the secondary dehydration process (S40) into a predetermined size and naturally cooling it at room temperature; And for 100 parts by weight of recycled rubber produced in the secondary cooling process (S50), 15 to 30 parts by weight of natural rubber, 50 to 60 parts by weight of silica, 5 to 10 parts by weight of compounding oil, and 0.5 to 0.5 parts by weight of stearic acid. Outsole composition mixing step (S60) of mixing 1.5 parts by weight, 0.5 to 1.5 parts by weight of antioxidant, 2 to 5 parts by weight of zinc, 5 to 6 parts by weight of surfactant, 1 to 3 parts by weight of accelerator, and 2 to 4 parts by weight of crosslinking agent; It is characterized by including.
상술한 과제 해결을 위한 구체적인 수단에 의하면, 본 발명은 합성고무 폐기물이 수회에 걸쳐 단계적으로 압착 교반되는 과정 중에 수분이 효과적으로 제거되어 안정적인 성능의 신발 아웃솔 조성물을 제공할 수 있다. According to the specific means for solving the above-described problem, the present invention can provide a shoe outsole composition with stable performance by effectively removing moisture during the process of stepwise pressing and stirring synthetic rubber waste several times.
또한, 본 발명에 의해 제조된 신발 아웃솔 조성물은 혼합 성분들이 긴밀하게 용합되어 천연고무 사용량을 최소화한 조건에서 아웃솔 조성물이 겉창 성능기준을 충족할 수 있는 효과가 있다.In addition, the shoe outsole composition manufactured according to the present invention has the effect of meeting the outsole performance standards under conditions where the mixed components are closely fused and the amount of natural rubber used is minimized.
도 1은 본 발명의 일실시예에 따른 재생고무를 이용한 신발 아웃솔 조성물 제조방법을 개략적으로 나타내는 순서도.
도 2는 본 발명의 일실시예에 따른 재생고무를 이용한 신발 아웃솔 조성물로 제조된 고무시트 시험성적서.1 is a flow chart schematically showing a method of manufacturing a shoe outsole composition using recycled rubber according to an embodiment of the present invention.
Figure 2 is a test report of a rubber sheet manufactured with a shoe outsole composition using recycled rubber according to an embodiment of the present invention.
이하에서 첨부된 도면을 참조하여 본 발명의 실시를 위한 구체적인 내용을 설명한다. 그리고 본 발명을 설명함에 있어서 관련된 공지기능에 대하여 이 분야의 기술자들에게 자명한 사항으로서 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략한다. Hereinafter, specific details for implementing the present invention will be described with reference to the attached drawings. Also, in describing the present invention, if it is determined that related known functions may unnecessarily obscure the gist of the present invention as they are obvious to those skilled in the art, the detailed description thereof will be omitted.
또한, 본 명세서에서 사용되는 기술용어들은 실시예에서의 기능을 고려하여 선택된 용어들로서, 그 용어의 의미는 발명의 구체적인 실시예에 따라 달라질 수 있다. 따라서 후술하는 실시예에서 사용된 용어들은, 본 명세서에 구체적으로 정의된 경우에는 그 정의에 따르며, 구체적인 정의가 없는 경우는 통상의 기술자들이 일반적으로 인식하는 기술용어의 의미로 해석되어야 할 것이다.Additionally, the technical terms used in this specification are terms selected in consideration of their functions in the embodiments, and the meaning of the terms may vary depending on the specific embodiment of the invention. Accordingly, terms used in the embodiments described later, if specifically defined in the present specification, shall follow the definition, and if there is no specific definition, they shall be interpreted as meanings of technical terms generally recognized by those skilled in the art.
본 발명은 재생고무를 이용한 신발 아웃솔 조성물 및 그 제조방법에 관련되며, 이는 합성고무 폐기물이 수회에 걸쳐 단계적으로 압착 교반되는 과정 중에 수분이 효과적으로 제거됨과 더불어 혼합 성분들이 긴밀하게 용합되어 천연고무 사용량을 최소화한 조건에서 아웃솔 조성물이 겉창 성능기준을 충족할 수 있는 기술이다.The present invention relates to a shoe outsole composition using recycled rubber and a manufacturing method thereof, in which moisture is effectively removed during the process of stepwise pressing and stirring synthetic rubber waste several times, and the mixed components are closely fused to reduce the amount of natural rubber used. It is a technology that allows outsole compositions to meet outsole performance standards under minimal conditions.
본 발명에 따른 재생고무를 이용한 신발 아웃솔 조성물은, 재생고무 100 중량부에 대하여, 천연고무 15~30 중량부, 실리카 50~60 중량부, 배합유 5~10 중량부, 스테아린산(Stearic acid) 0.5~1.5 중량부, 산화방지제 0.5~1.5 중량부, 아연 2~5 중량부, 계면활성제 5~6 중량부, 촉진제 1~3 중량부, 가교제 2~4 중량부로 이루어진다.The shoe outsole composition using recycled rubber according to the present invention contains 15 to 30 parts by weight of natural rubber, 50 to 60 parts by weight of silica, 5 to 10 parts by weight of compounding oil, and 0.5 parts by weight of stearic acid, based on 100 parts by weight of recycled rubber. It consists of ~1.5 parts by weight, 0.5~1.5 parts by weight of antioxidant, 2~5 parts by weight of zinc, 5~6 parts by weight of surfactant, 1~3 parts by weight of accelerator, and 2~4 parts by weight of crosslinker.
상기 재생고무는 중합 및 합체 시 발생하는 불량 합성 고무폐기물을 재생 처리하여 제조된 고무로서, 여기서 재생고무는 BR(Butadiene Rubber), SBR(Styrene Butadiene Rubber), SSBR(Solution Styrene Butadiene Rubber), EPM-EPDM, NBR 등의 합성고무를 의미한다. The recycled rubber is a rubber manufactured by recycling poor quality synthetic rubber waste generated during polymerization and coalescence. Here, the recycled rubber includes BR (Butadiene Rubber), SBR (Styrene Butadiene Rubber), SSBR (Solution Styrene Butadiene Rubber), and EPM- This refers to synthetic rubber such as EPDM and NBR.
이때, BR(Butadiene Rubber)은 부타디엔을 용액 중합법으로 제조한 합성고무 제품으로, 높은 cis 함량과 낮은 cis 함량의 두 가지로 생산할 수 있고, SBR(Styrene Butadiene Rubber)은 Styrene과 Butadiene을 유화 중합법으로 제조한 합성고무 제품으로, 비닐 결합 등의 혼합적인(불규칙적인) 구조를 가지며, sis형 1,4결합, trans형 1,4결합, 비닐(vi-nyl) 1,2결합의 세 가지로 합성되며, 그리고 SSBR(Solution Styrene Butadiene Rubber)은 Li(리튬) 촉매를 사용하여 용액 중합법으로 제조한 합성고무이고, EPM-EPDM 합성고무는 EPDM이라 하며 삼원 공중합체로서, 제3성분인 Diene이 포함되며, 에틸렌, 프로필렌 이원 공중합체는 특수적으로 내후와 내열성이 없는 고무상 원료이고, EPM(EPT)은 제3성분이 없는 분자로 이원 공중합체이다.At this time, BR (Butadiene Rubber) is a synthetic rubber product manufactured by solution polymerization of butadiene, and can be produced in two types, high cis content and low cis content, while SBR (Styrene Butadiene Rubber) is made by emulsion polymerization of styrene and butadiene. It is a synthetic rubber product manufactured from , and has a mixed (irregular) structure such as vinyl bonding, and is divided into three types: sis-type 1,4 bond, trans-type 1,4 bond, and vinyl (vi-nyl) 1,2 bond. SSBR (Solution Styrene Butadiene Rubber) is a synthetic rubber manufactured by solution polymerization using a Li (lithium) catalyst, and EPM-EPDM synthetic rubber is called EPDM and is a terpolymer with the third component, Diene. Included, ethylene and propylene binary copolymers are rubber-like raw materials with no special weather resistance or heat resistance, and EPM (EPT) is a binary copolymer with no third component.
상기 신발 아웃솔 조성물에 혼합되는 실리카는 습식 실리카, 건식 실리카 중 어느 1종 이상을 사용하고, 이때 실리카는 재생고무 100 중량부에 대하여 50~60 중량부가 배합되는 것이 바람직하다. 실리카가 50 중량부 미만일 경우 신발 아웃솔 조성물로 제조된 신발 아웃솔의 내마모성이 저하되고, 60 중량부를 초과할 경우 신발 아웃솔 성형성이 저하되는 문제점이 있다. The silica mixed in the shoe outsole composition uses at least one type of wet silica or dry silica, and in this case, 50 to 60 parts by weight of silica is preferably mixed with respect to 100 parts by weight of recycled rubber. If the silica is less than 50 parts by weight, the wear resistance of the shoe outsole made from the shoe outsole composition is reduced, and if it exceeds 60 parts by weight, the moldability of the shoe outsole is reduced.
그리고, 상기 배합유는 프로세스오일(process oil), DOP, 파라핀 왁스, 식물성 오일, 절연오일 중 1종 이상을 사용하고, 연화제, 가소제기능을 수행하도록 구비된다.In addition, the compounding oil uses one or more of process oil, DOP, paraffin wax, vegetable oil, and insulating oil, and is provided to perform the functions of a softener and plasticizer.
즉, 상기 배합유는 재생고무와 천연고무에 배합되어 탄성률과 유연성을 부여하는 한편, 용융 점도를 저하해 가공성을 향상하기 위한 첨가제로서, 재생고무 100 중량부 기준 배합유 5~10 중량부가 혼합되는바, 여기서 배합유가 5중량부 미만이면 탄성률과 유연성 개선에 효과가 미비하고, 10중량부를 초과하면 오히려 가공성을 저하시키는 요인으로 작용한다.In other words, the compounding oil is mixed with recycled rubber and natural rubber to give elastic modulus and flexibility, and is an additive to improve processability by lowering the melt viscosity. 5 to 10 parts by weight of compounding oil is mixed based on 100 parts by weight of recycled rubber. Here, if the blended oil is less than 5 parts by weight, the effect in improving elastic modulus and flexibility is insignificant, and if it exceeds 10 parts by weight, it actually acts as a factor in reducing processability.
신발 아웃솔 조성물에 혼합되는 스테아린산(Stearic acid)은 재생고무와 이종자재의 분산을 유도하기 위한 것으로서 재생고무 100 중량부 기준 0.5~1.5 중량부를 사용하는바, 스테아린산의 사용량이 상기 범위를 초과할 경우 블루밍(백화현상)이 발생될 수도 있다.Stearic acid mixed in the shoe outsole composition is used to induce dispersion of recycled rubber and dissimilar materials, and is used in an amount of 0.5 to 1.5 parts by weight based on 100 parts by weight of recycled rubber. If the amount of stearic acid used exceeds the above range, blooming occurs. (Whitening phenomenon) may occur.
또한, 산화방지제는 고무의 노화를 방지하는 물질로 산소에 의해서 자동산화되는 연쇄반응을 정지시키는 작용을 수행하고, 아연은 가류촉진제로서, 투명성 고무재질에 투명아연(T-AZO)이 적용되고, 불투명성 고무에 산화아연(ZNO)이 사용되도록 구비되며, 그 밖에 계면활성제, 촉진제, 가교제는 고무제품 제조 시 사용되는 통상적인 첨가제로서, 재생고무의 물성에 따라 상기 기재된 각 혼합물의 첨가범위 내에서 유동적으로 조절할 수 있다.In addition, antioxidant is a substance that prevents the aging of rubber and acts to stop the chain reaction that is auto-oxidized by oxygen, and zinc is a vulcanization accelerator, and transparent zinc (T-AZO) is applied to transparent rubber materials. Zinc oxide (ZNO) is provided for use in opaque rubber, and other surfactants, accelerators, and cross-linking agents are common additives used in the manufacture of rubber products, and can vary within the addition range of each mixture described above depending on the physical properties of the recycled rubber. It can be adjusted.
이하에서는 상기의 아웃솔 조성물의 제조방법에 대해 설명한다. 도 1은 본 발명의 일실시예에 따른 재생고무를 이용한 신발 아웃솔 조성물 제조방법을 개략적으로 나타내는 순서도이고, 도 2는 본 발명의 일실시예에 따른 재생고무를 이용한 신발 아웃솔 조성물로 제조된 고무시트 시험성적서이다.Below, the manufacturing method of the above outsole composition will be described. Figure 1 is a flow chart schematically showing a method of manufacturing a shoe outsole composition using recycled rubber according to an embodiment of the present invention, and Figure 2 is a rubber sheet manufactured from a shoe outsole composition using recycled rubber according to an embodiment of the present invention. This is a test report.
본 발명에 따른 재생고무를 이용한 신발 아웃솔 조성물 제조방법은, 선별공정(S10), 1차 탈수공정(S20), 1차 냉각공정(S30), 2차 탈수공정(S40), 2차 냉각공정(S50), 아웃솔 조성물 배합단계(S60)를 포함한다.The method for manufacturing a shoe outsole composition using recycled rubber according to the present invention includes a screening process (S10), a primary dehydration process (S20), a primary cooling process (S30), a secondary dehydration process (S40), and a secondary cooling process ( S50), including the outsole composition mixing step (S60).
1. 선별공정(S10)1. Sorting process (S10)
본 발명에 따른 선별공정(S10)은 고무폐기물에 포함된 불순물을 분리하면서 고무폐기물을 종류별로 분류하는 단계이다.The sorting process (S10) according to the present invention is a step of separating the impurities contained in the rubber waste and classifying the rubber waste by type.
여기서 고무폐기물이라 함은 합성고무 생산 시 나오는 불량품 및 버어(burr)와 같은 부산물을 의미한다. Here, rubber waste refers to by-products such as defective products and burrs produced during the production of synthetic rubber.
전술한 바와 같이 BR(Butadiene Rubber), SBR(Styrene Butadiene Rubber), SSBR(Solution Styrene Butadiene Rubber), EPM-EPDM 합성고무 등으로 종류가 다양한 재생될 고무들은 각기 특성이 상이하므로 동일한 물성을 가진 종류별로 분류하고, 이 과정 중에 고무폐기물에 혼입된 비닐, 나무조각, 오일덩어리를 포함하는 불순물을 1차 분리한다.As mentioned above, the various types of rubber to be recycled, such as BR (Butadiene Rubber), SBR (Styrene Butadiene Rubber), SSBR (Solution Styrene Butadiene Rubber), and EPM-EPDM synthetic rubber, each have different characteristics, so each type with the same physical properties is different. It is classified, and during this process, impurities including vinyl, wood chips, and oil lumps mixed in the rubber waste are first separated.
2. 1차 탈수공정(S20)2. First dehydration process (S20)
본 발명에 따른 1차 탈수공정(S20)은 상기 선별공정(S10)을 거쳐 분류된 고무폐기물을 90~120℃에서 6~10kg/㎠ 압력으로 압착 반죽하면서 수분을 제거하는 단계이다.The first dehydration process (S20) according to the present invention is a step of removing moisture by kneading the rubber waste classified through the screening process (S10) by pressing and kneading it at a pressure of 6 to 10 kg/cm2 at 90 to 120 ° C.
상기 1차 탈수공정(S20)은 고무폐기물을 고무반죽기(Pressurized rubber kneader)에 투입하여 스크류 회전력(1분당 15~30회 회전)에 의해 6~10kg/㎠ 압력으로 압착 성형된다.In the first dehydration process (S20), rubber waste is put into a pressurized rubber kneader and pressed and molded at a pressure of 6 to 10 kg/cm2 by screw rotation force (15 to 30 rotations per minute).
이때 고무폐기물은 고무반죽기에 투입된 상태로 90~120℃로 히팅되어 압착에 따른 반죽효율 향상과 더불어 기화현상에 의해 수분이 신속하게 제거된다.At this time, the rubber waste is put into the rubber kneading machine and heated to 90~120℃, which improves kneading efficiency through compression and quickly removes moisture through evaporation.
그리고, 1차 탈수공정(S20) 중에 고무폐기물 120℃ 이상 가열되면 화재의 위험이 있으므로, 만약을 대비해 고무반죽기를 밀폐하는 방식으로 덮는 소화커버를 설치하는 것이 바람직하다.In addition, there is a risk of fire if the rubber waste is heated above 120°C during the first dehydration process (S20), so it is advisable to install a fire extinguishing cover to seal the rubber kneader just in case.
3. 1차 냉각공정(S30)3. First cooling process (S30)
본 발명에 따른 1차 냉각공정(S30)은 상기 1차 탈수공정(S20)을 거친 고무폐기물을 8~12mm 두께로 압착 성형하여 열과 함께 수분을 방출하는 단계이다.The first cooling process (S30) according to the present invention is a step in which the rubber waste that has undergone the first dehydration process (S20) is pressed and molded to a thickness of 8 to 12 mm to release moisture along with heat.
상기 1차 냉각공정(S30)은 믹싱롤(mixing roll)에서 이루어지고, 상기 믹싱롤(mixing roll)은 한 쌍의 롤이 상호 역방향으로 회전되면서 고무폐기물을 판형태로 납작하게 성형하는 장치로서, 한 쌍의 롤 사이 간격이 레버에 의해 조절되고, 롤 사이 간격에 의해 고무폐기물 성형 두께가 결정된다.The first cooling process (S30) is performed in a mixing roll, and the mixing roll is a device that flattens rubber waste into a plate shape while a pair of rolls rotate in opposite directions, The gap between a pair of rolls is controlled by a lever, and the thickness of the rubber waste molding is determined by the gap between the rolls.
이때, 상기 고무폐기물은 믹싱롤(mixing roll)을 통과한 후, 회수되어 재투입되는 과정을 수회 반복하면서 공기 중에 노출되는 표면적이 확장되어 열이 신속하게 방출됨과 더불어 고무폐기물 내에 포함된 미세한 수분입자가 빠르게 증발처리된다. At this time, the rubber waste passes through a mixing roll, is recovered, and is reintroduced several times. As the surface area exposed to the air expands, heat is quickly released, and fine moisture particles contained in the rubber waste are removed. is evaporated quickly.
4. 2차 탈수공정(S40)4. Second dehydration process (S40)
본 발명에 따른 2차 탈수공정(S40)은 상기 1차 냉각공정(S30)을 거친 고무폐기물을 60~90℃ 조건에서 1분당 10~30회 회전하는 압출스크류로 압출 성형하면서 수분을 제거하고, 고무폐기물이 압출 이송되는 중에 여과망을 통과시켜 불순물을 제거하는 단계이다.The secondary dehydration process (S40) according to the present invention removes moisture from the rubber waste that has undergone the primary cooling process (S30) by extruding it with an extrusion screw rotating 10 to 30 times per minute at 60 to 90°C, This is the step in which impurities are removed by passing rubber waste through a filter net while it is being extruded and transported.
상기 2차 탈수공정(S40)은 탈수기에서 이루어지고, 탈수기는 호퍼를 통하여 투입되는 고무폐기물을 압축스크류로 히팅 압축하여 금형을 통하여 소정의 단면 형상으로 압출하는 과정 중에 수분을 제거한다.The secondary dehydration process (S40) is performed in a dehydrator, and the dehydrator removes moisture during the process of heating and compressing rubber waste input through a hopper with a compression screw and extruding it into a predetermined cross-sectional shape through a mold.
그리고, 상기 고무폐기물이 압출되는 경로 상에 여과망을 설치하여 미세 불순물을 제거하므로 순도가 높은 고품질의 재생고무를 얻을 수 있다. In addition, a filter net is installed on the path through which the rubber waste is extruded to remove fine impurities, so that high-quality recycled rubber with high purity can be obtained.
5. 2차 냉각공정(S50)5. Secondary cooling process (S50)
본 발명에 따른 2차 냉각공정(S50)은 상기 2차 탈수공정(S40)을 거친 고무폐기물을 소정의 크기로 가공하여 상온에서 자연 냉각하여 재생고무를 제조하는 단계이다.The secondary cooling process (S50) according to the present invention is a step of manufacturing recycled rubber by processing the rubber waste that has undergone the secondary dehydration process (S40) into a predetermined size and naturally cooling it at room temperature.
상기 2차 냉각공정(S50)은 공기 순환이 원활한 공간에서 이루어지고, 별도로 송풍팬을 설치하여 공기를 순환시키는 구성도 가능하다.The secondary cooling process (S50) is performed in a space with smooth air circulation, and it is also possible to install a separate blowing fan to circulate the air.
이때, 상기 2차 탈수공정(S40)을 거친 고무폐기물은 외부공기와 접촉되는 표면적이 확대되도록 소정의 입자로 커팅되어 자연 냉각 시간을 단축시키는 구성도 가능하다.At this time, the rubber waste that has gone through the secondary dehydration process (S40) can be cut into predetermined particles to increase the surface area in contact with external air to shorten the natural cooling time.
6. 아웃솔 조성물 배합단계(S60)6. Outsole composition mixing step (S60)
본 발명에 따른 아웃솔 조성물 배합단계(S60)는 상기 2차 냉각공정(S50)에서 제조된 재생고무 100 중량부에 대하여, 천연고무 15~30 중량부, 실리카 50~60 중량부, 배합유 5~10 중량부, 스테아린산(Stearic acid) 0.5~1.5 중량부, 산화방지제 0.5~1.5 중량부, 아연 2~5 중량부, 계면활성제 5~6 중량부, 촉진제 1~3 중량부, 가교제 2~4 중량부를 혼합하는 단계이다.The outsole composition mixing step (S60) according to the present invention is 15 to 30 parts by weight of natural rubber, 50 to 60 parts by weight of silica, and 5 to 5 parts by weight of compounding oil, based on 100 parts by weight of recycled rubber produced in the secondary cooling process (S50). 10 parts by weight, stearic acid 0.5 to 1.5 parts by weight, antioxidant 0.5 to 1.5 parts by weight, zinc 2 to 5 parts by weight, surfactant 5 to 6 parts by weight, accelerator 1 to 3 parts by weight, crosslinker 2 to 4 parts by weight This is the stage of mixing wealth.
여기서 상기 아웃솔 조성물 배합단계(S60)는 상기 재생고무를 이용한 신발 아웃솔 조성물의 설명을 참조한다.Here, the outsole composition mixing step (S60) refers to the description of the shoe outsole composition using recycled rubber.
이처럼 상기 선별공정(S10), 1차 탈수공정(S20), 1차 냉각공정(S30), 2차 탈수공정(S40), 2차 냉각공정(S50), 아웃솔 조성물 배합단계(S60)를 거치면서 합성고무 폐기물이 수회에 걸쳐 단계적으로 압착 교반되는 과정 중에 수분이 효과적으로 제거됨과 더불어 혼합 성분들이 긴밀하게 용합(교반)되어 천연고무 사용량을 최소화한 조건에서 아웃솔 조성물이 겉창 성능기준을 충족할 수 있다.In this way, going through the screening process (S10), the first dehydration process (S20), the first cooling process (S30), the second dehydration process (S40), the second cooling process (S50), and the outsole composition mixing step (S60) During the process of compressing and agitating synthetic rubber waste in stages several times, moisture is effectively removed and the mixed components are closely fused (stirred), allowing the outsole composition to meet the outsole performance standards under conditions that minimize the amount of natural rubber used.
[성능시험][Performance test]
본 발명의 재생고무를 이용한 신발 아웃솔 조성물로 제조된 고무시트를 한국신발피혁연구원에 의뢰하여 경도, 인장 강도, 신장률, 인열 강도, 비중, 마모 시험, 내유성 시험을 의뢰한 결과, 고무제안전화의 겉창 성능기준을 충분히 만족하는 것으로 확인되었다. (도 2 참조)The rubber sheet manufactured with the shoe outsole composition using recycled rubber of the present invention was commissioned to the Korea Shoe and Leather Research Institute to test hardness, tensile strength, elongation, tear strength, specific gravity, abrasion test, and oil resistance. As a result, the outsole of rubber safety shoes was obtained. It was confirmed that the performance standards were sufficiently satisfied. (see Figure 2)
도 2의 시험성적서에서, 본원의 신발 아웃솔 조성물로 제조된 고무시트는, 경도 67, 인장 강도 1883 N/㎠, 신장률 516%, 인열 강도 69.7N/㎜, 비중 1.16, 마모 시험 274%, 내유성 시험 +1.5% 의 시험결과치를 나타내고 있다. In the test report of Figure 2, the rubber sheet manufactured with the shoe outsole composition of the present application has a hardness of 67, a tensile strength of 1883 N/cm2, an elongation of 516%, a tear strength of 69.7N/mm, a specific gravity of 1.16, an abrasion test of 274%, and an oil resistance test. It shows a test result of +1.5%.
이는 아래 표의 고무제안전화의 겉창 성능기준에서 고시하고 있는 겉창의 재료에 관한 기준 물성값(인장강도, 신장율, 내유강도변화율)과 대비할 때 성능이 월등히 상회함을 알 수 있다. This shows that the performance significantly exceeds the standard physical property values (tensile strength, elongation rate, and rate of change in oil resistance) for the outsole material notified in the outsole performance standards for rubber safety shoes in the table below.
[별표 2]
제7호
겉창의 재료
[Appendix 2]
No. 7
Outsole material
뒷굽 부분은 0.25배 이상일 것More than 0.45 times the total length (L) toward the front
The heel area must be 0.25 times or more.
(단 미끄럼방지용 경우 1,000N/㎠ 이상)In case of rubber, it must be more than 1,370 N/㎠
(However, for anti-slip use, more than 1,000N/㎠)
이상과 같이 본 발명의 상세한 설명에는 본 발명의 가장 바람직한 실시 예에 관하여 설명하였으나, 본 발명의 기술범위에 벗어나지 않는 범위 내에서는 다양한 변형실시도 가능하다 할 것이다. 따라서 본 발명의 보호범위는 상기 실시 예에 한정하여 정하여 질 것이 아니라 후술하는 특허청구범위의 기술들과 이들 기술로부터 균등한 기술수단들에까지 보호범위가 인정되어야 할 것이다.As described above, the most preferred embodiments of the present invention have been described in the detailed description of the present invention, but various modifications may be made without departing from the technical scope of the present invention. Therefore, the scope of protection of the present invention should not be limited to the above embodiments, but should be recognized to the technologies in the patent claims described later and to equivalent technical means from these technologies.
Claims (5)
For 100 parts by weight of recycled rubber, 15 to 30 parts by weight of natural rubber, 50 to 60 parts by weight of silica, 5 to 10 parts by weight of compounding oil, 0.5 to 1.5 parts by weight of stearic acid, 0.5 to 1.5 parts by weight of antioxidant, A shoe outsole composition using recycled rubber, characterized in that it consists of 2 to 5 parts by weight of zinc, 5 to 6 parts by weight of surfactant, 1 to 3 parts by weight of accelerator, and 2 to 4 parts by weight of crosslinking agent.
상기 배합유는 프로세스오일(process oil), DOP, 파라핀 왁스, 식물성 오일, 절연오일 중 1종 이상을 사용하고, 연화제, 가소제기능을 수행하도록 구비되는 것을 특징으로 하는 재생고무를 이용한 신발 아웃솔 조성물.
According to clause 1,
The compounding oil uses one or more of process oil, DOP, paraffin wax, vegetable oil, and insulating oil, and is provided to perform the functions of a softener and plasticizer. A shoe outsole composition using recycled rubber.
상기 아연은 가류촉진제로서, 투명성 고무재질에 투명아연(T-AZO)이 적용되고, 불투명성 고무에 산화아연(ZNO)이 사용되도록 구비되는 것을 특징으로 하는 재생고무를 이용한 신발 아웃솔 조성물.
According to clause 1,
The zinc is a vulcanization accelerator, and transparent zinc (T-AZO) is applied to the transparent rubber material, and zinc oxide (ZNO) is used to the opaque rubber. A shoe outsole composition using recycled rubber.
상기 선별공정(S10)을 거쳐 분류된 고무폐기물을 90~120℃에서 6~10kg/㎠ 압력으로 압착 반죽하면서 수분을 제거하는 1차 탈수공정(S20);
상기 1차 탈수공정(S20)을 거친 고무폐기물을 8~12mm 두께로 압착 성형하여 열과 함께 수분을 방출하는 1차 냉각공정(S30);
상기 1차 냉각공정(S30)을 거친 고무폐기물을 60~90℃ 조건에서 1분당 10~30회 회전하는 압출스크류로 압출 성형하면서 수분을 제거하고, 고무폐기물이 압출 이송되는 중에 여과망을 통과시켜 불순물을 제거하는 2차 탈수공정(S40);
상기 2차 탈수공정(S40)을 거친 고무폐기물을 소정의 크기로 가공하여 상온에서 자연 냉각하여 재생고무를 제조하는 2차 냉각공정(S50); 및
상기 2차 냉각공정(S50)에서 제조된 재생고무 100 중량부에 대하여, 천연고무 15~30 중량부, 실리카 50~60 중량부, 배합유 5~10 중량부, 스테아린산(Stearic acid) 0.5~1.5 중량부, 산화방지제 0.5~1.5 중량부, 아연 2~5 중량부, 계면활성제 5~6 중량부, 촉진제 1~3 중량부, 가교제 2~4 중량부를 혼합하는 아웃솔 조성물 배합단계(S60);를 포함하는 것을 특징으로 하는 재생고무를 이용한 신발 아웃솔 조성물 제조방법.
A screening process (S10) that separates the impurities contained in the rubber waste and classifies the rubber waste into types with the same physical properties;
A first dehydration process (S20) of removing moisture from the rubber waste classified through the selection process (S10) by pressing and kneading it at a pressure of 6 to 10 kg/cm2 at 90 to 120°C;
A first cooling process (S30) in which the rubber waste that has undergone the first dehydration process (S20) is pressed and molded to a thickness of 8 to 12 mm to release moisture along with heat;
The rubber waste that has gone through the first cooling process (S30) is extruded at 60 to 90°C with an extrusion screw rotating 10 to 30 times per minute to remove moisture, and the impurities are removed by passing the rubber waste through a filter net while being extruded and transported. Secondary dehydration process (S40) to remove;
A secondary cooling process (S50) of manufacturing recycled rubber by processing the rubber waste that has gone through the secondary dehydration process (S40) into a predetermined size and naturally cooling it at room temperature; and
For 100 parts by weight of recycled rubber produced in the secondary cooling process (S50), 15 to 30 parts by weight of natural rubber, 50 to 60 parts by weight of silica, 5 to 10 parts by weight of compounding oil, and 0.5 to 1.5 parts by weight of stearic acid. parts by weight, 0.5 to 1.5 parts by weight of antioxidant, 2 to 5 parts by weight of zinc, 5 to 6 parts by weight of surfactant, 1 to 3 parts by weight of accelerator, and 2 to 4 parts by weight of crosslinking agent (S60); A method of manufacturing a shoe outsole composition using recycled rubber, comprising:
상기 2차 탈수공정에서 압출스크류의 토출측에는 여과망을 설치하여 불순물이 제거될 수 있도록 구비되는 것을 특징으로 하는 재생고무를 이용한 신발 아웃솔 조성물 제조방법.According to clause 4,
A method of manufacturing a shoe outsole composition using recycled rubber, characterized in that a filter net is installed on the discharge side of the extrusion screw in the secondary dehydration process to remove impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220097521A KR20240019619A (en) | 2022-08-04 | 2022-08-04 | Shoe outsole composition using regenerated rubber and manufacturing method therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220097521A KR20240019619A (en) | 2022-08-04 | 2022-08-04 | Shoe outsole composition using regenerated rubber and manufacturing method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20240019619A true KR20240019619A (en) | 2024-02-14 |
Family
ID=89896910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020220097521A KR20240019619A (en) | 2022-08-04 | 2022-08-04 | Shoe outsole composition using regenerated rubber and manufacturing method therefor |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20240019619A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100583417B1 (en) | 2004-08-16 | 2006-05-25 | 한국신발피혁연구소 | Shoe sole composition containing recycled rubber |
| KR102104716B1 (en) | 2018-05-25 | 2020-04-24 | 한국신발피혁연구원 | A rubber composition for shoe outsole comprising recycled rubber |
-
2022
- 2022-08-04 KR KR1020220097521A patent/KR20240019619A/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100583417B1 (en) | 2004-08-16 | 2006-05-25 | 한국신발피혁연구소 | Shoe sole composition containing recycled rubber |
| KR102104716B1 (en) | 2018-05-25 | 2020-04-24 | 한국신발피혁연구원 | A rubber composition for shoe outsole comprising recycled rubber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101543325B (en) | Anti-crocking rubber sole | |
| CN103374149B (en) | The resol curing rubber compositionss of activation | |
| RU2430938C2 (en) | Improving regeneration of natural and synthetic rubber | |
| CN1246378C (en) | Thermoplastic elastomer composition | |
| CN105873996B (en) | Curable polymer composition | |
| CN102585319A (en) | Vulcanizing system of brominated butyl rubber/ polypropylene thermoplastic elastomer sealing material and preparation method for sealing material | |
| EP0775718A2 (en) | Process for preparing elastomeric compounds from granular elastomers and polymers | |
| KR102104716B1 (en) | A rubber composition for shoe outsole comprising recycled rubber | |
| CN1159458A (en) | Curable ethylene-alpha olefin-diene elastomer composition | |
| CN101027357B (en) | Thermoplastic vulcanizates and process to prepare them | |
| CN1044001C (en) | Accelerator compositions and rubber compounding composition embodying same | |
| CN1100084C (en) | Waste rubber regenerating process and waste rubber regenerant | |
| US20220403146A1 (en) | Reclaimed material for manufacturing shoes and method of producing reclaimed rubber by processing recycled shoe material waste | |
| KR20240019619A (en) | Shoe outsole composition using regenerated rubber and manufacturing method therefor | |
| KR0154397B1 (en) | Out-sole | |
| CN111548570A (en) | High-performance ethylene propylene rubber sealing gasket, and preparation method and application thereof | |
| KR100575604B1 (en) | Bio-degradable mid-sole compounds and therefor | |
| KR100187496B1 (en) | Method of producing outsole | |
| EP0188097B1 (en) | Rubber compositions | |
| CA2692851A1 (en) | Elastomeric composite | |
| JP5909119B2 (en) | Manufacturing method of natural rubber | |
| CN104817772A (en) | New waste expanded polystyrene recycling method | |
| KR102433191B1 (en) | A method for manufacturing eco-friendly recycled filler and rubber compositon for shoe parts comprising the same | |
| KR102465930B1 (en) | A rubber composition for eco-friendly shoe parts | |
| RU2334769C2 (en) | Thermoplastic elastomeric material |