CN110451943A - 一种以废弃莫来石匣钵为原料的陶瓷及其制备方法 - Google Patents
一种以废弃莫来石匣钵为原料的陶瓷及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种以废弃莫来石匣钵为原料的陶瓷,包括:废弃莫来石匣钵粗粉30~50%、废弃莫来石匣钵细粉20~30%、碳化硅粉末10~20%、硼砂10~20%、碳粉1~10%、环氧改性有机硅树脂1~10%、醋酸纤维素1~6%。本发明公开了一种陶瓷的制备方法,包括:将废弃莫来石匣钵进行粉碎,并筛分出废弃莫来石匣钵粗粉和废弃莫来石匣钵细粉;将废弃莫来石匣钵粗粉、废弃莫来石匣钵细粉、碳化硅粉末、硼砂、碳粉、环氧改性有机硅树脂及醋酸纤维素进行混合,球磨后得到混合料;将所述混合料压制成形得到生坯;将所述生坯进行煅烧;超声清洗,烘干后即得成品。本发明制备的以废弃莫来石匣钵为原料的陶瓷耐高温、降低了烧结温度。
Description
技术领域
本发明涉及陶瓷技术领域,更具体地说,本发明涉及一种以废弃莫来石匣钵为原料的陶瓷及其制备方法。
背景技术
陶瓷是一种在耐火物料中加入一定量的结合剂而制成的颗粒状和粉状材料的混合物。陶瓷具有较高流动性,适用于以浇注方式成型的不定形耐火材料。同其他定形耐火材料相比,陶瓷中结合剂和水分含量较高,流动性较好,不用烧结,使用方便,可根据使用条件对所用材质和结合剂加以选择,故而应用范围较广。该陶瓷既可直接浇注成衬体使用,亦可以浇注或震实方法制成预制块使用。多年来,各国学者围绕碳化硅多孔陶瓷的制备和改性开展了大量的研究工作,并取得了丰硕的成果。碳化硅多孔陶瓷仍存在两个主要问题:一方面,如何使碳化硅粉料在较低温度下烧结是其面临的一个主要问题。由于碳化硅是一种强共价键化合物,因此纯的碳化硅陶瓷的烧结温度很高,通常在2100℃以上。另一方面,在烧结过程中,碳化硅表面发生氧化生成一层SiO2保护膜,抗氧化能力低。
作为陶瓷的一种,莫来石碳化硅陶瓷是以莫来石和碳化硅为骨料和粉料外加一些结合剂所制备的耐火陶瓷。该莫来石碳化硅陶瓷具有比重大、机械强度高、抗磨损性能好的特点,要用做锅炉、高炉热风炉、加热炉、陶瓷窑炉等各种窑炉的内衬材料,但其抗热震性能稍差,严重影响了使用寿命。与此同时,大量的废弃莫来石匣钵给环境和相关企业带来了巨大的压力。
发明内容
本发明的一个目的是解决至少上述问题,并提供至少后面将说明的优点。
本发明还有一个目的是提供了一种以废弃莫来石匣钵为原料的陶瓷及制备方法,其降低了烧结温度,并提高了陶瓷的耐高温性能。
为了实现上述目的,本发明公开了一种以废弃莫来石匣钵为原料的陶瓷,按质量分数计,包括以下原料:
废弃莫来石匣钵粗粉30~50%、废弃莫来石匣钵细粉20~30%、碳化硅粉末10~20%、硼砂10~20%、碳粉1~10%、环氧改性有机硅树脂1~10%、醋酸纤维素1~6%。
优选地,本发明中,按质量分数计,包括以下原料:
废弃莫来石匣钵粗粉38%、废弃莫来石匣钵细粉25%、碳化硅粉末13%、硼砂15%、碳粉5%、环氧改性有机硅树脂2%、醋酸纤维素2%。
优选地,本发明中,按质量分数计,包括以下原料:
废弃莫来石匣钵粗粉32%、废弃莫来石匣钵细粉24%、碳化硅粉末16%、硼砂12%、碳粉6%、环氧改性有机硅树脂5%、醋酸纤维素5%。
优选地,本发明中,所述废弃莫来石匣钵粗粉的粒径为10~50mm,所述废弃莫来石匣钵细粉的粒径为0.01~0.1mm,所述碳化硅粉末的粒径为0.1~50μm,所述碳粉的粒径为1~10μm。
本发明还公开了一种以废弃莫来石匣钵为原料的陶瓷的制备方法,包括以下步骤:
步骤一、将废弃莫来石匣钵进行机械破除粉碎,并筛分出粒径为10~50mm的废弃莫来石匣钵粗粉和粒径为0.01~0.1mm的废弃莫来石匣钵细粉;
步骤二、按质量分数计,将30~50%的废弃莫来石匣钵粗粉、20~30%的废弃莫来石匣钵细粉、10~20%的碳化硅粉末、10~20%的硼砂、1~10%的碳粉、1~10%的环氧改性有机硅树脂及1~6%的醋酸纤维素进行混合,球磨后过120目筛得到混合料;
步骤三、采用干压法将所述混合料压制成形得到生坯;
步骤四、将所述生坯干燥后置于电炉中,以2~8℃/min的升温速率升温至1000~1500℃进行煅烧,达到煅烧温度后保温2~3h,之后随炉冷却;
步骤五、将煅烧得到的样品进行超声清洗,烘干后即得成品。
优选地,本发明中,所述步骤三中,压制成形的压力为120MPa,保压时间为60s。
本发明采用硼砂作为助溶剂、环氧改性有机硅树脂作为粘结剂,首先发生融化的硼砂粘结在环氧改性有机硅树脂周围,形成硼砂-环氧改性有机硅树脂结构,降低了陶瓷的烧结温度,同时莫来石的加入改善了陶瓷的抗氧化能力、机械强度和耐高温性能,碳粉作为扩孔剂,增加了陶瓷的孔隙率。
本发明至少包括以下有益效果:
1、本发明提供的陶瓷以废弃莫来石匣钵为原料,采用科学的配料比例和级配制备的陶瓷降低了烧结温度,并提高了耐高温性能,同时解决了大量的废弃莫来石匣钵对环境的污染。
2、本发明提供的陶瓷的制备方法有效降低了成本,提高了陶瓷的机械强度。
本发明的其它优点、目标和特征将部分通过下面的说明体现,部分还将通过对本发明的研究和实践而为本领域的技术人员所理解。
具体实施方式
下面结合实施例对本发明做进一步的详细说明,以令本领域技术人员参照说明书文字能够据以实施。
应当理解,本文所使用的诸如“具有”、“包含”以及“包括”术语并不排除一个或多个其它元件或其组合的存在或添加。
实施例1
本发明公开了一种以废弃莫来石匣钵为原料的陶瓷,按质量分数计,包括:
废弃莫来石匣钵粗粉38%、废弃莫来石匣钵细粉25%、碳化硅粉末13%、硼砂15%、碳粉5%、环氧改性有机硅树脂2%、醋酸纤维素2%。
废弃莫来石匣钵粗粉的粒径为10mm,废弃莫来石匣钵细粉的粒径为0.01mm,碳化硅粉末的粒径为0.1μm,碳粉的粒径为1μm。
上述以废弃莫来石匣钵为原料的陶瓷的制备方法,包括以下步骤:
步骤一、将废弃莫来石匣钵进行机械破除粉碎,并筛分出粒径为10mm的废弃莫来石匣钵粗粉和粒径为0.01mm的废弃莫来石匣钵细粉;
步骤二、按质量分数计,将38%的废弃莫来石匣钵粗粉、25%的废弃莫来石匣钵细粉、13%的碳化硅粉末、15%的硼砂、5%的碳粉、2%的环氧改性有机硅树脂及2%的醋酸纤维素进行混合,球磨后过120目筛得到混合料;
步骤三、采用干压法将所述混合料压制成形得到生坯,压制成形的压力为120MPa,保压时间为60s;
步骤四、将所述生坯干燥后置于电炉中,以8℃/min的升温速率升温至1000℃进行煅烧,达到煅烧温度后保温3h,之后随炉冷却;
步骤五、将煅烧得到的样品进行超声清洗,烘干后即得成品,清洗液为去离子水。抗弯强度为150MPa,室温1000℃循环30次其强度损失10%。
实施例2
本发明公开了一种以废弃莫来石匣钵为原料的陶瓷,按质量分数计,包括:
废弃莫来石匣钵粗粉32%、废弃莫来石匣钵细粉24%、碳化硅粉末16%、硼砂12%、碳粉6%、环氧改性有机硅树脂5%、醋酸纤维素5%。
废弃莫来石匣钵粗粉的粒径为50mm,废弃莫来石匣钵细粉的粒径为0.1mm,碳化硅粉末的粒径为50μm,碳粉的粒径为10μm。
上述以废弃莫来石匣钵为原料的陶瓷的制备方法,包括以下步骤:
步骤一、将废弃莫来石匣钵进行机械破除粉碎,并筛分出粒径为50mm的废弃莫来石匣钵粗粉和粒径为0.1mm的废弃莫来石匣钵细粉;
步骤二、按质量分数计,将32%的废弃莫来石匣钵粗粉、24%的废弃莫来石匣钵细粉、16%的碳化硅粉末、12%的硼砂、6%的碳粉、5%的环氧改性有机硅树脂及5%的醋酸纤维素进行混合,球磨后过120目筛得到混合料;
步骤三、采用干压法将所述混合料压制成形得到生坯,压制成形的压力为120MPa,保压时间为60s;
步骤四、将所述生坯干燥后置于电炉中,以2℃/min的升温速率升温至1500℃进行煅烧,达到煅烧温度后保温2h,之后随炉冷却;
步骤五、将煅烧得到的样品进行超声清洗,清洗液为去离子水,烘干后即得成品。抗弯强度为160MPa,室温1000℃循环30次其强度损失9%。
实施例3
本发明公开了一种以废弃莫来石匣钵为原料的陶瓷,按质量分数计,包括:
废弃莫来石匣钵粗粉50%、废弃莫来石匣钵细粉20%、碳化硅粉末10%、硼砂10%、碳粉4%、环氧改性有机硅树脂3%、醋酸纤维素3%。
废弃莫来石匣钵粗粉的粒径为20mm,废弃莫来石匣钵细粉的粒径为0.02mm,碳化硅粉末的粒径为10μm,碳粉的粒径为10μm。
上述以废弃莫来石匣钵为原料的陶瓷的制备方法,包括以下步骤:
步骤一、将废弃莫来石匣钵进行机械破除粉碎,并筛分出粒径为10~50mm的废弃莫来石匣钵粗粉和粒径为0.01~0.1mm的废弃莫来石匣钵细粉;
步骤二、按质量分数计,将50%的废弃莫来石匣钵粗粉、20%的废弃莫来石匣钵细粉、10%的碳化硅粉末、10%的硼砂、4%的碳粉、3%的环氧改性有机硅树脂及3%的醋酸纤维素进行混合,球磨后过120目筛得到混合料;
步骤三、采用干压法将所述混合料压制成形得到生坯,压制成形的压力为120MPa,保压时间为60s;
步骤四、将所述生坯干燥后置于电炉中,以4℃/min的升温速率升温至1200℃进行煅烧,达到煅烧温度后保温2.5h,之后随炉冷却;
步骤五、将煅烧得到的样品进行超声清洗,清洗液为去离子水,烘干后即得成品。抗弯强度为180MPa,室温1000℃循环30次其强度损失11%。
实施例4
本发明公开了一种以废弃莫来石匣钵为原料的陶瓷,按质量分数计,包括:
废弃莫来石匣钵粗粉45%、废弃莫来石匣钵细粉30%、碳化硅粉末10%、硼砂10%、碳粉2%、环氧改性有机硅树脂2%、醋酸纤维素1%。
废弃莫来石匣钵粗粉的粒径为30mm,废弃莫来石匣钵细粉的粒径为0.05mm,碳化硅粉末的粒径为1μm,碳粉的粒径为1μm。
上述以废弃莫来石匣钵为原料的陶瓷的制备方法,包括以下步骤:
步骤一、将废弃莫来石匣钵进行机械破除粉碎,并筛分出粒径为30mm的废弃莫来石匣钵粗粉和粒径为0.05mm的废弃莫来石匣钵细粉;
步骤二、按质量分数计,将45%的废弃莫来石匣钵粗粉、30%的废弃莫来石匣钵细粉、10%的碳化硅粉末、10%的硼砂、2%的碳粉、2%的环氧改性有机硅树脂及1%的醋酸纤维素进行混合,球磨后过120目筛得到混合料;
步骤三、采用干压法将所述混合料压制成形得到生坯,压制成形的压力为120MPa,保压时间为60s;
步骤四、将所述生坯干燥后置于电炉中,以4℃/min的升温速率升温至1100℃进行煅烧,达到煅烧温度后保温2h,之后随炉冷却;
步骤五、将煅烧得到的样品进行超声清洗,清洗液为去离子水,烘干后即得成品。抗弯强度为170MPa,室温1000℃循环30次其强度损失10%。
实施例5
本发明公开了一种以废弃莫来石匣钵为原料的陶瓷,按质量分数计,包括:
废弃莫来石匣钵粗粉35%、废弃莫来石匣钵细粉25%、碳化硅粉末15%、硼砂15%、碳粉6%、环氧改性有机硅树脂2%、醋酸纤维素2%。
废弃莫来石匣钵粗粉的粒径为40mm,废弃莫来石匣钵细粉的粒径为0.03mm,碳化硅粉末的粒径为10μm,碳粉的粒径为10μm。
上述以废弃莫来石匣钵为原料的陶瓷的制备方法,包括以下步骤:
步骤一、将废弃莫来石匣钵进行机械破除粉碎,并筛分出粒径为10~50mm的废弃莫来石匣钵粗粉和粒径为0.01~0.1mm的废弃莫来石匣钵细粉;
步骤二、按质量分数计,将35%的废弃莫来石匣钵粗粉、25%的废弃莫来石匣钵细粉、15%的碳化硅粉末、15%的硼砂、6%的碳粉、2%的环氧改性有机硅树脂及2%的醋酸纤维素进行混合,球磨后过120目筛得到混合料;
步骤三、采用干压法将所述混合料压制成形得到生坯,压制成形的压力为120MPa,保压时间为60s;
步骤四、将所述生坯干燥后置于电炉中,以5℃/min的升温速率升温至1300℃进行煅烧,达到煅烧温度后保温2.5h,之后随炉冷却;
步骤五、将煅烧得到的样品进行超声清洗,清洗液为去离子水,烘干后即得成品。抗弯强度为190MPa,室温1000℃循环30次其强度损失9%。
实施例6
本发明公开了一种以废弃莫来石匣钵为原料的陶瓷,按质量分数计,包括:
废弃莫来石匣钵粗粉30%、废弃莫来石匣钵细粉20%、碳化硅粉末20%、硼砂19%、碳粉1%、环氧改性有机硅树脂4%、醋酸纤维素6%。
废弃莫来石匣钵粗粉的粒径为10mm,废弃莫来石匣钵细粉的粒径为0.05mm,碳化硅粉末的粒径为5μm,碳粉的粒径为5μm。
上述以废弃莫来石匣钵为原料的陶瓷的制备方法,包括以下步骤:
步骤一、将废弃莫来石匣钵进行机械破除粉碎,并筛分出粒径为10mm的废弃莫来石匣钵粗粉和粒径为0.05的废弃莫来石匣钵细粉;
步骤二、按质量分数计,将30%的废弃莫来石匣钵粗粉、20%的废弃莫来石匣钵细粉、20%的碳化硅粉末、19%的硼砂、1%的碳粉、4%的环氧改性有机硅树脂及6%的醋酸纤维素进行混合,球磨后过120目筛得到混合料;
步骤三、采用干压法将所述混合料压制成形得到生坯,压制成形的压力为120MPa,保压时间为60s;
步骤四、将所述生坯干燥后置于电炉中,以7℃/min的升温速率升温至1250℃进行煅烧,达到煅烧温度后保温3h,之后随炉冷却;
步骤五、将煅烧得到的样品进行超声清洗,清洗液为去离子水,烘干后即得成品。抗弯强度为180MPa,室温1000℃循环30次其强度损失10%。
尽管本发明的实施方案已公开如上,但其并不仅仅限于说明书和实施方式中所列运用,它完全可以被适用于各种适合本发明的领域,对于熟悉本领域的人员而言,可容易地实现另外的修改,因此在不背离权利要求及等同范围所限定的一般概念下,本发明并不限于特定的细节。
Claims (6)
1.一种以废弃莫来石匣钵为原料的陶瓷,其特征在于,按质量分数计,包括以下原料:
废弃莫来石匣钵粗粉30~50%、废弃莫来石匣钵细粉20~30%、碳化硅粉末10~20%、硼砂10~20%、碳粉1~10%、环氧改性有机硅树脂1~10%、醋酸纤维素1~6%。
2.根据权利要求1所述的一种以废弃莫来石匣钵为原料的陶瓷,其特征在于,按质量分数计,包括以下原料:
废弃莫来石匣钵粗粉38%、废弃莫来石匣钵细粉25%、碳化硅粉末13%、硼砂15%、碳粉5%、环氧改性有机硅树脂2%、醋酸纤维素2%。
3.根据权利要求1所述的一种以废弃莫来石匣钵为原料的陶瓷,其特征在于,按质量分数计,包括以下原料:
废弃莫来石匣钵粗粉32%、废弃莫来石匣钵细粉24%、碳化硅粉末16%、硼砂12%、碳粉6%、环氧改性有机硅树脂5%、醋酸纤维素5%。
4.根据权利要求1所述的一种以废弃莫来石匣钵为原料的陶瓷,其特征在于,所述废弃莫来石匣钵粗粉的粒径为10~50mm,所述废弃莫来石匣钵细粉的粒径为0.01~0.1mm,所述碳化硅粉末的粒径为0.1~50μm,所述碳粉的粒径为1~10μm。
5.一种制备根据权利要求1~4所述的以废弃莫来石匣钵为原料的陶瓷的方法,其特征在于,包括以下步骤:
步骤一、将废弃莫来石匣钵进行机械破除粉碎,并筛分出粒径为10~50mm的废弃莫来石匣钵粗粉和粒径为0.01~0.1mm的废弃莫来石匣钵细粉;
步骤二、按质量分数计,将30~50%的废弃莫来石匣钵粗粉、20~30%的废弃莫来石匣钵细粉、10~20%的碳化硅粉末、10~20%的硼砂、1~10%的碳粉、1~10%的环氧改性有机硅树脂及1~6%的醋酸纤维素进行混合,球磨后过120目筛得到混合料;
步骤三、采用干压法将所述混合料压制成形得到生坯;
步骤四、将所述生坯干燥后置于电炉中,以2~8℃/min的升温速率升温至1000~1500℃进行煅烧,达到煅烧温度后保温2~3h,之后随炉冷却;
步骤五、将煅烧得到的样品进行超声清洗,烘干后即得成品。
6.根据权利要求5所述的一种以废弃莫来石匣钵为原料的陶瓷的制备方法,其特征在于,所述步骤三中,压制成形的压力为120MPa,保压时间为60s。
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CN112811886A (zh) * | 2021-01-16 | 2021-05-18 | 陕西科技大学 | 一种电池匣钵及其制备方法 |
CN114644525A (zh) * | 2022-03-04 | 2022-06-21 | 北方民族大学 | 添加废弃料的复合匣钵及其制备方法 |
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CN112811886A (zh) * | 2021-01-16 | 2021-05-18 | 陕西科技大学 | 一种电池匣钵及其制备方法 |
CN114644525A (zh) * | 2022-03-04 | 2022-06-21 | 北方民族大学 | 添加废弃料的复合匣钵及其制备方法 |
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