TWI617617B - Rubber composition - Google Patents
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Abstract
一種橡膠組成物包含基材組分、發泡劑及促進劑。該基材組分包括黏土及天然橡膠，以該基材組分的總重為100wt%計，該黏土的含量範圍為50~90wt%，該天然橡膠的含量範圍為10~50wt%。本發明的橡膠組成物能有效降低原料成本及符合環保需求，且能使後續所製得的成品維持機械特性外，還能提高成品的耐燃性。 A rubber composition comprises a substrate component, a foaming agent, and an accelerator. The base component comprises clay and natural rubber, and the content of the clay ranges from 50 to 90% by weight based on the total weight of the substrate component, and the content of the natural rubber ranges from 10 to 50% by weight. The rubber composition of the invention can effectively reduce the raw material cost and meet the environmental protection requirements, and can maintain the mechanical properties of the finished product obtained in the subsequent process, and can also improve the flame resistance of the finished product.
Description
本發明是有關於一種橡膠組成物，特別是指一種包括黏土的橡膠組成物。 The present invention relates to a rubber composition, and more particularly to a rubber composition comprising clay.
橡膠為常見用於製鞋的材料，近年來，於現有應用於製鞋材料的橡膠組成物中，大多會添加黏土作為填充劑或耐燃劑，但因顧及後續成品的機械特性，故黏土的使用含量至多控制在20wt%以下(以橡膠與黏土的總重為100wt%計)；或者因考量相容性問題而將黏土置換為其它有機添加劑或有機耐燃劑。然而，隨著環保回收需求的增加，加上部份有機耐燃劑(如溴系耐燃劑)也被限制使用，所以現有橡膠組成物已逐漸捨棄使用有機耐燃劑。 Rubber is a material commonly used in shoemaking. In recent years, most of the rubber compositions currently used in shoemaking materials have been added with clay as a filler or a flame retardant, but the use of clay is taken into account in consideration of the mechanical properties of the subsequent products. The content is controlled at most below 20% by weight (based on 100% by weight of the total weight of the rubber and clay); or the clay is replaced with other organic additives or organic flame retardants due to consideration of compatibility issues. However, as environmental recycling demand increases and some organic flame retardants (such as bromine-based flame retardants) are also restricted, the existing rubber compositions have gradually abandoned the use of organic flame retardants.
因此，基於環保回收需求的考量，如何讓橡膠組成物兼具後續應用所需的機械特性及耐燃性等，同時能有效降低原料成本，成為目前致力發展方向。 Therefore, based on the consideration of environmentally-friendly recycling requirements, how to make the rubber composition have the mechanical properties and flame resistance required for subsequent applications, and at the same time effectively reduce the cost of raw materials, and become the current development direction.
鑒於現有作為製鞋材料之橡膠組成物的缺點，本案發明人首先思及在不影響後續所製得成品之機械特性的前提下，提高 組成物中黏土的含量，並藉以減少橡膠用量及有效降低原料成本，同時使組成物是以天然材料為主而更能符合環保需求，又由於黏土還具有耐燃性，因而提高黏土含量同時也能提高組成物後續所製得成品之耐燃性。 In view of the shortcomings of the existing rubber composition as a shoe material, the inventor of the present invention first thought of improving without affecting the mechanical properties of the finished product produced subsequently. The content of clay in the composition, in order to reduce the amount of rubber and effectively reduce the cost of raw materials, while making the composition more natural materials and more environmentally friendly, and because the clay is also flame resistant, it can also increase the clay content. Improve the flame resistance of the finished product produced by the composition.
因此，本發明之目的，即在提供一種能有效降低原料成本及符合環保需求，且能使後續所製得的成品維持機械特性外，還能提高成品之耐燃性的橡膠組成物。 Accordingly, an object of the present invention is to provide a rubber composition which can effectively reduce the cost of raw materials and meet environmental protection requirements, and can maintain the mechanical properties of the finished product which is subsequently produced, and can also improve the flame resistance of the finished product.
於是，本發明橡膠組成物包含基材組分、發泡劑及促進劑。 Thus, the rubber composition of the present invention comprises a substrate component, a foaming agent and an accelerator.
該基材組分包括黏土及天然橡膠，以該基材組分的總重為100wt%計，該黏土的含量範圍為50~90wt%，該天然橡膠的含量範圍為10~50wt%。 The base component comprises clay and natural rubber, and the content of the clay ranges from 50 to 90% by weight based on the total weight of the substrate component, and the content of the natural rubber ranges from 10 to 50% by weight.
本發明之功效是由於以該基材組分的總重為100wt%計，該黏土的含量範圍為50~90wt%，因而使本發明的橡膠組成物，在不影響後續所製得成品之機械特性的前提下，除了能有效降低原料成本及更符合環保需求外，同時還能提高後續所製得成品之耐燃性。 The effect of the present invention is that the content of the clay ranges from 50 to 90% by weight based on 100% by weight of the total weight of the substrate component, thereby making the rubber composition of the present invention mechanically not affecting the subsequent finished product. Under the premise of the characteristics, in addition to effectively reducing the cost of raw materials and more in line with environmental protection requirements, it can also improve the flame resistance of the finished products.
以下將就本發明內容進行詳細說明： The contents of the present invention will be described in detail below:
本發明橡膠組成物包含基材組分、發泡劑及促進劑。較佳地，本發明的橡膠組成物還包含添加劑。以下再就基材組分、發泡劑、促進劑及添加劑進一步詳細說明。 The rubber composition of the present invention comprises a substrate component, a foaming agent and an accelerator. Preferably, the rubber composition of the present invention further comprises an additive. Further details of the substrate component, the foaming agent, the accelerator, and the additive will be described below.
[基材組分][Substrate component]
本發明組成物中的基材組分，以該基材組分的總重為100wt%計，該黏土的含量範圍為50~90wt%，該天然橡膠的含量範圍為10~50wt%。較佳地，以該基材組分的總重為100wt%計，該黏土的含量範圍為60~90wt%，該天然橡膠的含量範圍為10~40wt%。 The base component in the composition of the present invention has a content of the clay in an amount of from 50 to 90% by weight based on the total weight of the substrate component of from 100 to 90% by weight, and the content of the natural rubber is from 10 to 50% by weight. Preferably, the content of the clay ranges from 60 to 90% by weight based on 100% by weight of the total weight of the substrate component, and the content of the natural rubber ranges from 10 to 40% by weight.
較佳地，該黏土是選自於經改質黏土、微米級黏土、奈米級黏土或前述的組合。更佳地，該黏土為經改質黏土、或微米級黏土與奈米級黏土的組合。 Preferably, the clay is selected from the group consisting of modified clay, micron clay, nano clay or a combination of the foregoing. More preferably, the clay is a combination of modified clay, or micron-sized clay and nano-grade clay.
又更佳地，該經改質黏土是選自於高嶺土、石脂、蒙脫石、蛭石、伊利石、水鋁英石或前述的組合。 Still more preferably, the modified clay is selected from the group consisting of kaolin, rock grease, montmorillonite, vermiculite, illite, allophane or combinations thereof.
又更佳地，該微米級黏土與奈米級黏土的組合，若以該微米級黏土與奈米級黏土的總重為100wt%計，該奈米級黏土的含量範圍為3~5wt%。特別值得一提的是，當該奈米級黏土的含量範圍為3~5wt%時，可使後續所製得成品之耐磨性(機械特性)增加20~30%。 More preferably, the combination of the micron-sized clay and the nano-scale clay is 100% by weight based on the total weight of the micro-scale clay and the nano-grade clay, and the nano-scale clay is in the range of 3 to 5 wt%. It is particularly worth mentioning that when the content of the nano-grade clay is in the range of 3 to 5 wt%, the wear resistance (mechanical properties) of the finished product can be increased by 20 to 30%.
[發泡劑][foaming agent]
該發泡劑例如但不限於是偶氮二甲醯胺(azodicarbonamide，簡稱ADCA)、4,4'-氧代雙苯磺醯肼(4,4'-oxydibenzenesulfonyl hydrazide，簡稱OBSH)、N,N'-二亞硝基五亞甲基四胺(N,N'-dinitrosopentamethylene tetramine，簡稱DPT)或前述的組合。 The blowing agent is, for example but not limited to, azodicarbonamide (ADCA), 4,4'-oxydibenzenesulfonyl hydrazide (OBSH), N, N. '-N'N'-dinitrosopentamethylene tetramine (DPT) or a combination of the foregoing.
較佳地，以該基材組份的總重為100重量份計，該發泡劑的含量範圍為4~8重量份。 Preferably, the blowing agent is contained in an amount ranging from 4 to 8 parts by weight based on 100 parts by weight of the total of the base component.
[促進劑][accelerator]
較佳地，該促進劑是選自於噻唑(thiazole)類促進劑、次磺醯胺(sulfenamide)類促進劑、秋蘭姆(thiuram)類促進劑、二硫代胺基甲酸鹽(dithiocarbamate)類促進劑、胍類(guanidine)促進劑或前述的組合。 Preferably, the accelerator is selected from the group consisting of a thiazole accelerator, a sulfenamide accelerator, a thiuram accelerator, and a dithiocarbamate. a promoter, a guanidine promoter or a combination of the foregoing.
該噻唑類促進劑例如但不限於是2-硫醇基苯并噻唑(2-mercaptobenzothiazole，又稱M促進劑)或二硫化二苯并噻唑[2,2'-dithiobis(benzothiazole)，又稱DM促進劑]；該次磺醯胺類促進劑例如但不限於是N-環己基-2-苯并噻唑次磺醯胺(N-cyclohexyl-2-benzothiazolylsulfenamide，又稱CBS促進劑)、N-叔丁基-2-苯并噻唑次磺醯胺 (N-tert-butyl-benzothiazolesulfenamide，又稱TBBS促進劑)、N-氧聯二亞乙基-2-苯并噻唑次磺醯胺(N-oxydiethylene-2-benzothiazole sulfenamide，又稱NOBS促進劑)或N,N'-二環己基-2-苯并噻唑次磺醯胺(N,N'-dicyclohexyl-2-benzothiazolesulfenamide，又稱DZ促進劑)；該秋蘭姆類促進劑例如但不限於是二硫化四甲基秋蘭姆(tetramethylthiuram disulfide，又稱TMTD促進劑)、一硫化四甲基秋蘭姆(tetramethylthiuram monosulfide，又稱TMTM促進劑)、二硫化四乙基秋蘭姆(tetraethylthiuram disulfide，又稱TETD促進劑)或四硫化雙五亞甲基秋蘭姆(dipentamethylenethiuram tetrasulfide，又稱DPTT促進劑)；該二硫代胺基甲酸鹽類促進劑例如但不限於是二乙基二硫代胺基甲酸鋅(diethyldithiocarbamic acid zinc salt，又稱ZDC促進劑)、二丁基二硫代胺基甲酸鋅(dibutyldithiocarbamic acid zinc salt，又稱BZ促進劑)或二甲基二硫代胺基甲酸鋅(dimethyldithiocarbamic acid zinc salt，又稱PZ促進劑)；該胍類促進劑例如但不限於是二苯胍(1,3-diphenylguanidine，又稱D促進劑)。 The thiazole accelerator is, for example but not limited to, 2-mercaptobenzothiazole (also known as M promoter) or 2,2'-dithiobis (benzothiazole), also known as DM. Promoter]; the sulfonamide accelerator such as, but not limited to, N-cyclohexyl-2-benzothiazolylsulfenamide (also known as CBS accelerator), N-un Butyl-2-benzothiazole sulfoximine (N-tert-butyl-benzothiazolesulfenamide, also known as TBBS accelerator), N-oxydiethylene-2-benzothiazole sulfenamide (also known as NOBS accelerator) Or N,N'-dicyclohexyl-2-benzothiazolesulfenamide (also known as DZ accelerator); the thiuram promoter is, for example but not limited to, Tetramethylthiuram disulfide (also known as TMTD accelerator), tetramethylthiuram monosulfide (also known as TMTM accelerator), tetraethylthiuram disulfide (tetraethylthiuram disulfide) Also known as TETD accelerator) or dipentamethylenethiuram tetrasulfide (also known as DPTT accelerator); the dithioaminoformate promoters such as, but not limited to, diethyldithio Diethyldithiocarbamic acid zinc salt (also known as ZDC accelerator), dibutyldithiocarbamic acid zinc salt (also known as BZ accelerator) or zinc dimethyldithiocarbamate (dimethyldithiocarbamic acid zinc sa Lt, also known as PZ accelerator); the steroid promoter is, for example but not limited to, 1,3-diphenylguanidine (also known as D accelerator).
更佳地，該促進劑是選自於2-硫醇基苯并噻唑(M促進劑)、N-環已基-2-苯并噻唑次磺醯胺(CBS促進劑)、二硫化四甲基秋蘭姆(TMTD促進劑)或前述的組合。 More preferably, the promoter is selected from the group consisting of 2-thiol benzothiazole (M accelerator), N-cyclohexyl-2-benzothiazole sulfoximine (CBS accelerator), tetrasulfide tetrasulfide Kiryulam (TMTD accelerator) or a combination of the foregoing.
較佳地，以該基材組份的總重為100重量份計，該促進劑的含量範圍為1~6重量份。 Preferably, the promoter is contained in an amount ranging from 1 to 6 parts by weight based on 100 parts by weight of the total of the base component.
[添加劑][additive]
較佳地，以該基材組份的總重為100重量份計，該添加劑的含量範圍為0.5~27重量份。更佳地，以該基材組份的總重為100重量份計，該添加劑的含量範圍為19~23重量份。 Preferably, the additive is contained in an amount ranging from 0.5 to 27 parts by weight based on 100 parts by weight of the total of the base component. More preferably, the additive is contained in an amount ranging from 19 to 23 parts by weight based on 100 parts by weight of the total of the base component.
該添加劑是選自任何習知適於與橡膠混合之試劑，較佳地，該添加劑是選自於架橋劑、架橋助劑、發泡助劑、硫化劑、填充劑、抗氧化劑、分散劑、軟化劑或前述的組合。更佳地，該添加劑是選自於發泡助劑、硫化劑、抗氧化劑、分散劑、軟化劑或前述的組合。 The additive is selected from any of the conventionally suitable reagents for mixing with rubber. Preferably, the additive is selected from the group consisting of bridging agents, bridging aids, foaming aids, vulcanizing agents, fillers, antioxidants, dispersants, softeners. Or a combination of the foregoing. More preferably, the additive is selected from the group consisting of a foaming aid, a vulcanizing agent, an antioxidant, a dispersing agent, a softening agent, or a combination thereof.
該架橋劑例如但不限於是過氧化二異丙苯(dicumyl peroxide)、二(第三丁基過氧異丙基)苯[di(t-butylperoxyisopropyl)benzene]、4,4-二(第三丁基過氧化)戊酸丁酯[n-butyl-4,4-di(t-butylperoxy)valerate]或前述的組合。 The bridging agent is, for example but not limited to, dicumyl peroxide, di(t-butylperoxyisopropyl)benzene, 4,4-di (third Butyl peroxy) butyl pentanoate [n-butyl-4,4-di(t-butylperoxy)valerate] or a combination of the foregoing.
該架橋助劑例如但不限於是三烯丙基三聚氰酸酯(triallyl cyanurate，簡稱TAC)、三烯丙基異三聚氰酸酯(triallyl isocyanurate，簡稱TAIC)、三羥甲基丙烷三甲基丙烯酸酯(trimethylolpropane trimethacrylate，簡稱TMPTMA)或前述的組合。 The bridging aids are, for example but not limited to, triallyl cyanurate (TAC), triallyl isocyanurate (TAIC), trimethylolpropane tris. Trimethylolpropane trimethacrylate (TMPTMA) or a combination of the foregoing.
該發泡助劑例如但不限於是硬脂酸鹽[如硬脂酸鋅(zinc stearate)等]、金屬氧化物[如氧化鋅(ZnO)等]、尿素衍生物或前述的組合。在本發明的具體實施例中，該發泡助劑為氧化鋅。 The foaming aid is, for example but not limited to, a stearate [such as zinc stearate or the like], a metal oxide (such as zinc oxide (ZnO), etc.), a urea derivative, or a combination thereof. In a particular embodiment of the invention, the foaming aid is zinc oxide.
較佳地，以該基材組份的總重為100重量份計，該發泡助劑的含量範圍為4~6重量份。 Preferably, the foaming auxiliary is contained in an amount ranging from 4 to 6 parts by weight based on 100 parts by weight of the total of the base component.
該硫化劑可為任何習知能使橡膠進行硫化的成分，該硫化劑例如但不限於是元素硫(如硫磺等)、含硫化合物(如一氯化硫等)、非含硫化合物(如硒元素或碲元素等)或前述的組合。在本發明的具體實施例中，該硫化劑為硫磺。 The vulcanizing agent may be any component known to vulcanize rubber, such as, but not limited to, elemental sulfur (such as sulfur, etc.), sulfur-containing compounds (such as sulfur monochloride, etc.), non-sulfur compounds (such as selenium). Or 碲 element, etc.) or a combination of the foregoing. In a particular embodiment of the invention, the vulcanizing agent is sulfur.
較佳地，以該基材組份的總重為100重量份計，該硫化劑的含量範圍為1~4重量份。 Preferably, the vulcanizing agent is contained in an amount ranging from 1 to 4 parts by weight based on 100 parts by weight of the total of the base component.
該填充劑例如但不限於是碳酸鈣、二氧化矽(白煙)、黑煙、滑石粉或前述的組合。 The filler is for example but not limited to calcium carbonate, cerium oxide (white smoke), black smoke, talc or a combination of the foregoing.
該抗氧化劑可為任何習知能抑制橡膠氧化的成分，該抗氧化劑例如但不限於是胺類抗氧化劑(如酮胺類、二芳基仲胺類或對苯二胺類等)、酚類抗氧化劑或前述的組合。在本發明的具體實施例中，該抗氧化劑為聚(1,2-二氫化-2,2,4-三甲基喹啉)[poly(1,2-dihydro-2,2,4-trimethylquinoline)，又稱抗氧化劑RD]。 The antioxidant may be any conventional component which inhibits oxidation of the rubber, such as, but not limited to, an amine antioxidant (such as a ketone amine, a diaryl secondary amine or a p-phenylenediamine), a phenolic resistance. An oxidizing agent or a combination of the foregoing. In a particular embodiment of the invention, the antioxidant is poly(1,2-dihydro-2,2,4-trimethylquinoline) [poly(1,2-dihydro-2,2,4-trimethylquinoline) ), also known as antioxidant RD].
較佳地，以該基材組份的總重為100重量份計，該抗氧化劑的含量範圍為1~3重量份。 Preferably, the antioxidant is contained in an amount ranging from 1 to 3 parts by weight based on 100 parts by weight of the total of the base component.
該分散劑例如但不限於是聚乙烯蠟(PE wax)、Aflux 16、Aflux 25、Aflux 42、Aflux 54、聚羥胺縮水劑、W33或前述的組合。在本發明的具體實施例中，該分散劑為聚乙烯蠟。 The dispersing agent is, for example but not limited to, PE wax, Aflux 16, Aflux 25, Aflux 42, Aflux 54, polyhydroxylamine shrinkage agent, W33 or a combination of the foregoing. In a particular embodiment of the invention, the dispersing agent is a polyethylene wax.
較佳地，以該基材組份的總重為100重量份計，該分散劑的含量範圍為0.5~3重量份。 Preferably, the dispersant is contained in an amount ranging from 0.5 to 3 parts by weight based on 100 parts by total of the total of the base component.
該軟化劑例如但不限於是芳香族軟化劑。 The softener is, for example but not limited to, an aromatic softener.
較佳地，以該基材組份的總重為100重量份計，該軟化劑的含量範圍為9~11重量份。 Preferably, the content of the softener ranges from 9 to 11 parts by weight based on 100 parts by weight of the total weight of the base component.
本發明將就以下實施例來作進一步說明，但應瞭解的是，該實施例僅為例示說明之用，而不應被解釋為本發明實施之限制。 The present invention will be further illustrated by the following examples, but it should be understood that this embodiment is intended to be illustrative only and not to be construed as limiting.
<實施例1~3、比較例1~3><Examples 1 to 3, Comparative Examples 1 to 3>
製備橡膠組成物Preparation of rubber composition
根據下表1選擇所需的成分及各成分含量，並混合所有成分進行攪拌後，即製得實施例1~3與比較例1~3的橡膠組成物。 The rubber compositions of Examples 1 to 3 and Comparative Examples 1 to 3 were obtained by selecting the desired components and the contents of the respective components according to the following Table 1, and mixing all the components and stirring them.
<比較例4~7><Comparative Examples 4 to 7>
製備橡膠組成物Preparation of rubber composition
根據下表2選擇所需的成分及各成分含量，並混合所有成分進行攪拌後，即製得比較例4~7的橡膠組成物。 The rubber compositions of Comparative Examples 4 to 7 were obtained by selecting the desired components and the contents of the respective components according to the following Table 2, and mixing all the components and stirring them.
<比較例8~11><Comparative Examples 8 to 11>
製備橡膠組成物Preparation of rubber composition
根據下表3選擇所需的成分及各成分含量，並混合所有成分進行攪拌後，即製得比較例8~11的橡膠組成物。 The rubber compositions of Comparative Examples 8 to 11 were obtained by selecting the desired components and the contents of the respective components according to the following Table 3, and mixing all the components and stirring them.
<應用例1~3、比較應用例1~11><Application Examples 1 to 3, Comparative Application Examples 1 to 11>
製備橡膠成品Preparation of finished rubber
應用例1~3與比較應用例1~11的橡膠成品是依據下列步驟所製得。 The rubber products of Application Examples 1 to 3 and Comparative Application Examples 1 to 11 were produced in accordance with the following procedures.
步驟(1)：將橡膠組成物(實施例1~3或比較例1~11)分為5次(即每次放入的量為所放入之組成物總量的20wt%)放入混煉機中並均勻攪拌後，製得一前驅物。 Step (1): The rubber composition (Examples 1 to 3 or Comparative Examples 1 to 11) is divided into 5 times (that is, the amount of each component is 20% by weight of the total amount of the composition to be placed). After a uniform stirring in the mixer, a precursor is obtained.
步驟(2)：使前述步驟(1)所得的前驅物進行壓出，形成一壓出片。 Step (2): The precursor obtained in the above step (1) is extruded to form an extruded piece.
步驟(3)：使前述步驟(2)所得的壓出片於100~250℃的烤箱內，經硫化結合、硫化發泡，以及硫化熟成後，製得一發泡體。 Step (3): The extruded sheet obtained in the above step (2) is subjected to vulcanization bonding, vulcanization foaming, and vulcanization in an oven at 100 to 250 ° C to obtain a foam.
步驟(4)：使前述步驟(3)所得的發泡體經冷卻後，製得該橡膠成品。 Step (4): After the foam obtained in the above step (3) is cooled, the finished rubber product is obtained.
<橡膠成品的耐磨性測試><Abrasion resistance test of rubber finished products>
A.測試方法：A. Test method:
先分別從應用例1~3與比較應用例1~11的橡膠成品取出200g且直徑為3mm的圓形測試樣品，接著將該等測試樣品分別根據ASTM D5963標準測試方法進行耐磨性測試。 First, 200 g of circular test samples having a diameter of 3 mm were taken out from the rubber samples of Application Examples 1 to 3 and Comparative Application Examples 1 to 11, respectively, and then the test samples were subjected to abrasion resistance tests according to the ASTM D5963 standard test method.
應用例1~3與比較應用例1~11分別在基材組分中所添加天然橡膠以外之成分的種類、該天然橡膠以外之成分的含量(以基材組分為100wt%計)，以及應用例1~3與比較應用例1~11的測試樣品分別於100℃下經耐磨性測試後，由式I計算所得因磨耗損失 的重量(g)與由式II計算所得因磨耗損失的重量比例(%)之結果，整理於下表4中。 Application Examples 1 to 3 and Comparative Application Examples 1 to 11 respectively, the kind of the component other than the natural rubber added to the substrate component, the content of the component other than the natural rubber (based on the substrate component of 100% by weight), and The wear loss of the test samples of Application Examples 1 to 3 and Comparative Application Examples 1 to 11 was calculated by the wear resistance test at 100 ° C, respectively. The weight (g) and the weight ratio (%) due to the loss of abrasion calculated by Formula II are summarized in Table 4 below.
[式I]因磨耗損失的重量(g)=經耐磨性測試前的樣品重量(g)-經耐磨性測試後的樣品重量(g) [Formula I] Weight loss due to abrasion loss (g) = sample weight before abrasion resistance test (g) - sample weight after abrasion resistance test (g)
B.結果與討論：B. Results and discussion:
參閱表4，以碳酸鈣作為填充劑來替代天然橡膠的比較應用例4~7，隨著碳酸鈣於基材組分中的含量增加，其因磨耗損失的重量比例也會增加，且當碳酸鈣含量於50wt%以上時，因磨耗損失的重量比例更會明顯增加，說明碳酸鈣雖具有填充的效果，能大量替代天然橡膠以降低原料成本，但當碳酸鈣含量於50wt%以上時卻無法有效維持橡膠成品的耐磨性(機械特性)。 Referring to Table 4, Comparative Application Examples 4 to 7 in which calcium carbonate is used as a filler instead of natural rubber, as the content of calcium carbonate in the substrate component increases, the weight loss due to wear loss also increases, and when carbonic acid When the calcium content is above 50% by weight, the weight loss due to wear loss will increase significantly, indicating that although calcium carbonate has a filling effect, it can replace natural rubber in large quantities to reduce the cost of raw materials, but when the calcium carbonate content is above 50% by weight, it cannot Effectively maintain the wear resistance (mechanical properties) of the finished rubber product.
此外，以二氧化矽作為填充劑來替代天然橡膠的比較應用例8~11，雖能有效維持橡膠成品的耐磨性(機械特性)，但當二氧化矽含量於40wt%以上時，便無法製成橡膠成品，說明添加二氧化矽雖能維持橡膠成品的耐磨性(機械特性)，但卻無法大量替代天然橡膠，所以無法有效降低原料成本。 In addition, Comparative Application Examples 8 to 11 in which cerium oxide is used as a filler instead of natural rubber can effectively maintain the wear resistance (mechanical properties) of the rubber product, but when the cerium oxide content is 40% by weight or more, it cannot be The finished rubber product shows that the addition of cerium oxide can maintain the wear resistance (mechanical properties) of the rubber product, but it cannot replace the natural rubber in a large amount, so the raw material cost cannot be effectively reduced.
而以黏土作為填充劑來替代天然橡膠的比較應用例2~3與應用例1~3，隨著黏土於基材組分中的含量增加，其因磨耗損失的重量比例並不會明顯上升，特別是黏土含量於50wt%以上的應用例1~3，除了用大量黏土替代天然橡膠而能有效降低原料成 本外，且其因磨耗損失的重量比例與僅添加少量黏土的比較應用例例2~3相較，並無產生大幅變化，甚至低於未添加任何填充劑的比較應用例1，所以黏土含量於50wt%以上的應用例1~3也能維持橡膠的耐磨性(機械特性)。 In Comparative Application Examples 2 to 3 and Application Examples 1 to 3, in which clay is used as a filler instead of natural rubber, as the content of clay in the substrate component increases, the weight loss due to wear loss does not increase significantly. In particular, in application examples 1 to 3 in which the clay content is 50% by weight or more, in addition to replacing a large amount of clay with natural rubber, the raw material can be effectively reduced. In addition, the weight loss due to wear loss is not significantly different from that of Comparative Application Examples 2 to 3 in which only a small amount of clay is added, even lower than Comparative Application Example 1 in which no filler is added, so the clay content The application examples 1 to 3 of 50% by weight or more can also maintain the abrasion resistance (mechanical characteristics) of the rubber.
由前述說明可知，本發明以50~90wt%黏土來替代天然橡膠的橡膠組成物(如實施例1~3)與僅含小於50wt%黏土的組成物(如比較例2~3)或是以碳酸鈣或二氧化矽替代天然橡膠的組成物(如比較例4~11)不同，本發明以50~90wt%黏土來替代天然橡膠的組成物除了能有效將低原料成本外，還能使後續製得的橡膠成品維持耐磨性(機械特性)，又由於黏土具有耐燃性，所以本發明具有高黏土含量的橡膠組成物同時還能提高後續所製得橡膠成品的耐燃性。 It can be seen from the foregoing description that the present invention replaces the rubber composition of natural rubber (such as Examples 1-3) with 50~90 wt% clay and the composition containing less than 50 wt% clay (such as Comparative Examples 2-3) or Unlike calcium carbonate or cerium oxide instead of natural rubber (such as Comparative Examples 4 to 11), the present invention replaces the natural rubber composition with 50 to 90% by weight of clay, in addition to effectively reducing the cost of raw materials, The obtained rubber product maintains wear resistance (mechanical properties), and since the clay has flame resistance, the rubber composition of the present invention having a high clay content can also improve the flame resistance of the subsequently produced rubber product.
綜上所述，本發明的橡膠組成物由於黏土的含量範圍為50~90wt%(以基材組分的總重為100wt%計)，因而在不影響後續所製得成品之機械特性的前提下，除了能有效降低原料成本及更符合環保需求外，同時還能提高後續所製得成品之耐燃性，故確實能達成本發明之目的。 In summary, the rubber composition of the present invention has a clay content ranging from 50 to 90% by weight (based on the total weight of the substrate component of 100% by weight), and thus does not affect the mechanical properties of the finished product to be subsequently produced. In addition, in addition to being able to effectively reduce the cost of raw materials and more in line with environmental protection requirements, and at the same time improve the flame resistance of the finished product produced subsequently, the object of the present invention can be achieved.
惟以上所述者，僅為本發明之實施例而已，當不能以此限定本發明實施之範圍，凡是依本發明申請專利範圍及專利說明 書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。 However, the above description is only for the embodiments of the present invention, and the scope of the present invention cannot be limited thereto, and the scope and patent description of the patent application according to the present invention. The simple equivalent changes and modifications made by the contents of the book are still within the scope of the invention patent.
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