CN106518036A - 一种低收缩膨胀率陶瓷制品及其制备方法 - Google Patents
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Abstract
本发明具体涉及一种低收缩膨胀率陶瓷制品及其制备方法,由按以下重量份配比的原料制备而成:纳米碳酸钙:5‑8份,红长石:10‑15份,高岭土:15‑18份,钾长石:15‑18份,叶腊石:10‑15份,硅灰石:10‑13份,长石兰:8‑12份,石英:6‑10份,锂辉石:10‑13份,纳米氧化铈:0.08‑0.12份,碳化硅:3‑5份,制备方法包括称重,研磨,过滤,胚体经干燥、清洗、上釉,烧制等步骤,本发明采用特殊最佳的原料配方,低收缩膨胀率陶瓷制品热膨胀系数低,陶瓷成型时收缩率低,抗热冲击性能较强,热交换不容易破裂。
Description
技术领域
本发明属于陶瓷领域,具体涉及一种低收缩膨胀率陶瓷制品及其制备方法。
背景技术
普通陶瓷在低收缩等性能方面不够理想,生产低收缩膨胀率陶瓷制品的研究一直是日用陶瓷领域的一个难题,现有的低收缩膨胀率陶瓷制品制品,而且热膨胀系数较高,抗热冲击性能较差,机械强度低,热交换容易破裂,也不能在较苛刻的环境下使用。
目前,传统的陶瓷由于热膨胀系数大,韧性差,耐磨性差,成型时收缩率大,在高温环境下容易破碎,因此其应用领域受到很大的限制,不能用于高温部位,尤其不能用于冷热交替频繁的部位。
发明内容
基于现有技术的缺陷,本发明的目的是提供一种低收缩膨胀率陶瓷制品及其制备方法。
为了达到上述目的,本发明采用以下技术方案:一种低收缩膨胀率陶瓷制品,由按以下重量份配比的原料制备而成:纳米碳酸钙:5-8份,红长石:10-15份,高岭土:15-18份,钾长石:15-18份,叶腊石:10-15份,硅灰石:10-13份,长石兰:8-12份,石英:6-10份,锂辉石:10-13份,纳米氧化铈:0.08-0.12份,碳化硅:3-5份。
优选的一种低收缩膨胀率陶瓷制品,由按以下重量份配比的原料制备而成:纳米碳酸钙:6份,红长石:12份,高岭土:16份,钾长石:16份,叶腊石:12份,硅灰石:11份,长石兰:10份,石英:8份,锂辉石:12份,纳米氧化铈:0.1份,碳化硅:4份。
一种上述的低收缩膨胀率陶瓷制品制品的制备方法,包含以下步骤:
(1)按上述重量份的原料粉碎,过300-400目筛,得到混合物;
(2)将步骤(1)得到的混合物进一步搅拌混合均匀,加入球磨机
中研磨后将研磨料过700-800目筛,加水制成胚料,胚料经除铁、粗练、陈腐、精练处理后塑形得胚体;
(3)胚体经干燥、清洗、上釉后,在1100-1150摄氏度下烧结12-14小
时,即得成品。
本发明纳米氧化铈作为晶化抑制剂的引入,使得陶瓷制品具有强度高、晶化程度低、热膨胀系数小,抗热冲击性能优良等优点,纳米碳酸钙大大提高了陶瓷的强度和韧性,叶腊石抵消其它原料的收缩,锂辉石具有低膨胀系数,为热稳定性奠定了基础;石英,碳化硅等使得本发明化学性能稳定、导热系数高、热膨胀系数小、耐磨性好,强度高机械性能能好,本发明采用特殊最佳的原料配方,低收缩膨胀率陶瓷制品热膨胀系数低,陶瓷成型时收缩率低,抗热冲击性能较强,热交换不容易破裂,成型后也能在较苛刻的环境下使用,大幅度的温差变化都不会使釉层破裂,同时还具有硬度好,吸水率低,高耐磨等性能,本发明制备方法高效简单成本低,合理的步骤以及温度调节能最大限度的使得产品各组分性能充分发挥。
具体实施方式
下面通过实施例对本发明做进一步详细说明,实施例仅用来说明本发明,并不限制本发明的范围。
实施例1:一种低收缩膨胀率陶瓷制品,由按以下重量份配比的原料制备而成:纳米碳酸钙:5份,红长石:10份,高岭土:15份,钾长石:15份,叶腊石:10份,硅灰石:10份,长石兰:8份,石英:6份,锂辉石:10份,纳米氧化铈:0.08份,碳化硅:3份。
一种上述的低收缩膨胀率陶瓷制品的制备方法,包含以下步骤:
(1)按上述重量份的原料粉碎,过300目筛,得到混合物;
(2)将步骤(1)得到的混合物进一步搅拌混合均匀,加入球磨机
中研磨后将研磨料过700目筛,加水制成胚料,胚料经除铁、粗练、陈腐、精练处理后塑形得胚体;
(3)胚体经干燥、清洗、上釉后,在1100摄氏度下烧结12小时,即得成品。
实施例2:一种低收缩膨胀率陶瓷制品,由按以下重量份配比的原料制备而成:纳米碳酸钙:6份,红长石:12份,高岭土:16份,钾长石:16份,叶腊石:12份,硅灰石:11份,长石兰:10份,石英:8份,锂辉石:12份,纳米氧化铈:0.1份,碳化硅:4份。
一种上述的低收缩膨胀率陶瓷制品的制备方法,包含以下步骤:
(1)按上述重量份的原料粉碎,过400目筛,得到混合物;
(2)将步骤(1)得到的混合物进一步搅拌混合均匀,加入球磨机
中研磨后将研磨料过800目筛,加水制成胚料,胚料经除铁、粗练、陈腐、精练处理后塑形得胚体;
(3)胚体经干燥、清洗、上釉后,在1120摄氏度下烧结13小时,即得成品。
实施例3:一种低收缩膨胀率陶瓷制品,由按以下重量份配比的原料制备而成:纳米碳酸钙:8份,红长石:15份,高岭土:18份,钾长石:18份,叶腊石:15份,硅灰石:13份,长石兰:12份,石英:10份,锂辉石:13份,纳米氧化铈:0.12份,碳化硅:5份。
一种上述的低收缩膨胀率陶瓷制品的制备方法,包含以下步骤:
(1)按上述重量份的原料粉碎,过400目筛,得到混合物;
(2)将步骤(1)得到的混合物进一步搅拌混合均匀,加入球磨机
中研磨后将研磨料过800目筛,加水制成胚料,胚料经除铁、粗练、陈腐、精练处理后塑形得胚体;
(3)胚体经干燥、清洗、上釉后,在1150摄氏度下烧结14小
时,即得成品。
主要原料的理化性能:
叶腊石:线膨胀系数小,在未烧结前在一定的温度范围内(1050-1150℃)会产生线膨胀,这种线膨胀可抵消胚体在烧成过程中其他物料所造成的收缩,从而抗大了烧成范围,保证产品尺寸规格的一致,叶腊石具有良好的热稳定性和很少的湿膨胀,为此,可以用于制造尺寸准确、热稳定性好的产品。
红长石:减少坯体的干燥收缩和变形,改善干燥性能,缩短干燥时间。在烧成时可作为熔剂降低烧成温度,在瓷器烧成熔融中生成的红长石玻璃体充填于坯体的莫来石晶粒之间,使坯体致密而减少空隙,从而提高其机械强度和介电性能。此外红长石玻璃的生成还能提高坯体的透光性,无毒无害,铅铬溶出量为零,放射性元素含量符合国家标准。
硅灰石:有降低烧成温度,缩短烧成周期的作用,同时使坯体易于成型,减少坯体的烧成收缩。
石英:石英在釉料中能够提高陶瓷料的熔融温度与粘度,减少陶瓷料的膨胀系数,还能够提高釉的机械强度、硬度、耐磨性与耐化学腐蚀性,由于石英能被较多的易熔物CaO、Na2O、K2O、MgO熔融生成透明状石英玻璃,使陶瓷面光亮,提高陶瓷釉光泽度。
长石兰:可以减少坯体的干燥收缩和变形,改善干燥性能,缩短干燥时间。另外,在烧成时可作为熔剂降低烧成温度。
钾长石:钾长石熔融间隔时间长,熔融粘度高,熔融范围宽适合做釉料,可以减少坯体的干燥收缩和变形。
本发明的低收缩膨胀率陶瓷制品的物理性能经测试为:吸水率≤0.5%,热稳定性:200-20摄氏度水中交换三次无裂纹出现,抗弯强度≥100MPa,铅镉溶出量≤0.1mg/L,热膨胀率为0.20%(20-1000摄氏度)。
Claims (3)
1.一种低收缩膨胀率陶瓷制品,其特征在于由按以下重量份配比的原料制备而成:纳米碳酸钙:5-8份,红长石:10-15份,高岭土:15-18份,钾长石:15-18份,叶腊石:10-15份,硅灰石:10-13份,长石兰:8-12份,石英:6-10份,锂辉石:10-13份,纳米氧化铈:0.08-0.12份,碳化硅:3-5份。
2.根据权利要求1所述的低收缩膨胀率陶瓷制品,其特征在于由按以下重量份配比的原料制备而成:纳米碳酸钙:6份,红长石:12份,高岭土:16份,钾长石:16份,叶腊石:12份,硅灰石:11份,长石兰:10份,石英:8份,锂辉石:12份,纳米氧化铈:0.1份,碳化硅:4份。
3.一种根据权利要求1或2所述的低收缩膨胀率陶瓷制品的制备方法,包含以下步骤:
(1)按上述重量份的原料粉碎,过300-400目筛,得到混合物;
(2)将步骤(1)得到的混合物进一步搅拌混合均匀,加入球磨机中研磨后将研磨料过700-800目筛,加水制成胚料,胚料经除铁、粗练、陈腐、精练处理后塑形得胚体;
(3)胚体经干燥、清洗、上釉后,在1100-1150摄氏度下烧结12-14小时,即得成品。
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CN111689762A (zh) * | 2020-06-15 | 2020-09-22 | 江苏省宜兴彩陶工艺厂 | 一种裂纹釉陶瓷制品用坯料 |
CN114751720A (zh) * | 2022-04-21 | 2022-07-15 | 景德镇乐华陶瓷洁具有限公司 | 一种低收缩陶瓷制品及其制备方法 |
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