CN109336630A - 一种支架及其制备方法 - Google Patents
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Abstract
本发明涉及一种支架及其制备方法,属材料制备技术领域。该支架包括支架本体以及支架本体表面的保护层,所述的支架本体由复合陶瓷制成,复合陶瓷包括如下重量份数的原料:Si3N460‑100份、SiC 10‑30份、SiO210‑30份、碳纤维10‑20份、MgO 1‑5份、Y2O31‑5份、矿石粉5‑15份。本发明支架在主体表面设置一层保护层,且主体中含有与保护层相同的碳纤维和矿石粉,进而提高支架的强度、抗弯强度等力学性能。再者,保护层生物质纤维、碳纤维、矿石粉、助剂与聚四氟乙烯挤出造粒,通过加压成型设置在本体表面,进一步提高支架的耐蚀性。
Description
技术领域
本发明涉及一种支架及其制备方法,属材料制备技术领域。
背景技术
在实验室或者化学品较多的地方,需要按种类分别摆放在支架上,而一般合金类的支架的腐蚀性较差,不适合摆放酸性、碱性等具有腐蚀性的物品。现有技术中一般采用有“绿色金属”之称的镁及镁合金作为耐腐蚀性较好的铝合没应用在在航天、军工、汽车、通信、电子、医药等方面。如中国专利申请文件(CN 107937781A)公开了一种由镁合金制成的支架,然而镁合金的价格较高,且后期还需要进行微弧氧化以及防锈处理,制备步骤繁琐,并进一步提高了生产成本。
发明内容
本发明的目的是针对现有技术中存在的上述问题,提供一种耐腐蚀且高硬度的支架。
本发明的目的可通过下列技术方案来实现:一种支架,所述的支架包括支架本体以及支架本体表面的保护层,其中,所述的支架本体由复合陶瓷制成,所述的复合陶瓷包括如下重量份数的原料:Si3N4:60-100份、SiC:10-30份、SiO2:10-30份、碳纤维:10-20份、MgO:1-5份、Y2O3:1-5份、矿石粉:5-15份。
在上述的支架中,所述保护层包括如下重量份数的原料:生物质纤维10-20份、碳纤维5-10份、聚四氟乙烯40-60份、矿石粉5-10份、助剂1-8份。
在上述的支架中,所述的矿石粉为碳酸钙、硅酸钙、滑石粉中的一种或多种。
在上述的支架中,所述的矿石粉的平均粒径为80μm-500μm。
在上述的支架中,所述的生物质纤维为秸秆粉、木粉、木康粉中的一种或多种。
在上述的支架中,所述的生物质纤维的平均粒径为20μm-100μm。
本发明还提供上述支架的制备方法,所述的制备方法包括如下步骤:
称取复合陶瓷的原料:Si3N4 60-100份、SiC 10-30份、SiO210-30份、碳纤维10-20份、MgO1-5份、Y2O31-5份、矿石粉5-15份,将复合陶瓷的原料压制成坯件,并烧结成支架本体;
称取保护层的原料:生物质纤维10-20份、碳纤维5-10份、聚四氟乙烯40-60份、矿石粉5-10份、助剂1-8份;先将生物质纤维研磨成粒径为20μm-100μm的粉末;然后加入碳纤维、矿石粉和助剂并加热至100-130℃进行预混合;
将预混合的粉体与聚四氟乙烯挤出造粒,得到保护层料;
将保护层料通过挤出成型置于支架本体表面,得支架成品。
在上述支架的制备方法中,压制的压力为100-120MPa。
在上述支架的制备方法中,所述的烧结为1450-1550℃
与现有技术相比,本发明的支架在主体表面设置一层保护层,进一步保证支架力学性能的同时增加支架的耐腐蚀性。本发明主体中含有与保护层相同的碳纤维和矿石粉,当支架坯件在100-130℃下浸入保护层浆料中,支架本体中的碳纤维、矿石粉会与保护层浆料产生协同作用,进一步提高保护层与本体的结合力,进而提高支架的抗弯强度、韧性等力学性能。再者,本发明保护层中的生物质纤维、碳纤维、矿石粉和助剂先在100-130℃下进行预混合,有助于生物质纤维、碳纤维与矿石粉能更好地与聚四氯乙烯进行混合,然后与聚四氟乙烯挤出造粒,再通过加压成型设置在本体表面,使保护层料更好地均匀地附着在支架本体表面,进而提高支架的耐蚀性。
具体实施方式
以下是本发明的具体实施例,并对本发明的技术方案作进一步的描述,但本发明并不限于这些实施例。
实施例1
称取复合陶瓷的原料:Si3N4 80份、SiC 20份、SiO2 20份、碳纤维8份、MgO 3份、Y2O32份、平均粒径为80μm-500μm的碳酸钙8份,将复合陶瓷的原料在110MPa下压制成坯件,然后在1500℃下烧结成支架本体;
称取保护层的原料:平均粒径为20μm-100μm生物质纤维秸秆粉15份、碳纤维8份、聚四氟乙烯50份、碳酸钙8份、助剂5份;先将生物质纤维秸秆粉研磨成粒径为20μm-100μm的粉末;然后加入碳纤维、碳酸钙和助剂并加热至120℃进行预混合;
将预混合的粉体与聚四氟乙烯挤出造粒,得到保护层料;
将保护层料通过挤出成型置于支架本体表面,得支架成品。
实施例2
称取复合陶瓷的原料:Si3N4 70份、SiC 25份、SiO2 15份、碳纤维9份、MgO 2份、Y2O34份、平均粒径为80μm-500μm的硅酸钙6份,将复合陶瓷的原料在105MPa下压制成坯件,然后在1480℃下烧结成支架本体;
称取保护层的原料:平均粒径为20μm-100μm生物质纤维木粉12份、碳纤维9份、聚四氟乙烯45份、硅酸钙6份、助剂7份;先将生物质纤维木粉研磨成粒径为20μm-100μm的粉末;然后加入碳纤维、硅酸钙和助剂并加热至110℃进行预混合;
将预混合的粉体与聚四氟乙烯挤出造粒,得到保护层料;
将保护层料通过挤出成型置于支架本体表面,得支架成品。
实施例3
称取复合陶瓷的原料:Si3N4 90份、SiC 15份、SiO2 25份、碳纤维6份、MgO 4份、Y2O32份、平均粒径为80μm-500μm的滑石粉9份,将复合陶瓷的原料在115MPa下压制成坯件,然后在1520℃下烧结成支架本体;
称取保护层的原料:平均粒径为20μm-100μm生物质纤维木康粉18份、碳纤维6份、聚四氟乙烯55份、滑石粉9份、助剂2份;先将生物质纤维木康粉研磨成粒径为20μm-100μm的粉末;然后加入碳纤维、滑石粉和助剂并加热至125℃进行预混合;
将预混合的粉体与聚四氟乙烯挤出造粒,得到保护层料;
将保护层料通过挤出成型置于支架本体表面,得支架成品。实施例4
称取复合陶瓷的原料:Si3N4 60份、SiC 30份、SiO2 30份、碳纤维10份、MgO 1份、Y2O3 5份、平均粒径为80μm-500μm的硅酸钙5份,将复合陶瓷的原料在120MPa下压制成坯件,然后在1550℃下烧结成支架本体;
称取保护层的原料:平均粒径为20μm-100μm生物质纤维木粉10份、碳纤维10份、聚四氟乙烯60份、硅酸钙5份、助剂1份;先将生物质纤维研磨成粒径为20μm-100μm的粉末;然后加入碳纤维、矿石粉和助剂并加热至100-130℃进行预混合;
将预混合的粉体与聚四氟乙烯挤出造粒,得到保护层料;
将保护层料通过挤出成型置于支架本体表面,得支架成品。
实施例5
称取复合陶瓷的原料:Si3N4 100份、SiC 10份、SiO2 10份、碳纤维5份、MgO 5份、Y2O3 1份、平均粒径为80μm-500μm的碳酸钙10份,将复合陶瓷的原料在100MPa下压制成坯件,然后在1450℃下烧结成支架本体;
称取保护层的原料:平均粒径为20μm-100μm生物质纤维秸秆粉20份、碳纤维5份、聚四氟乙烯40份、碳酸钙10份、助剂8份;先将生物质纤维研磨成粒径为20μm-100μm的粉末;然后加入碳纤维、矿石粉和助剂并加热至130℃进行预混合;
将预混合的粉体与聚四氟乙烯挤出造粒,得到保护层料;
将保护层料通过挤出成型置于支架本体表面,得支架成品。
对比例1
该对比例与实施例1的区别仅在于,该对比例支架没有保护层,仅为支架本体。
对比例2
该对比例与实施例1的区别仅在于,该对比例支架本体中不含有碳纤维和碳酸钙,其他与实施例1一样,此处不再累述。
对比例3
该对比例与实施例1的区别仅在于,该对比例支架本体中不含有SiC和SiO2,其他与实施例1一样,此处不再累述。
对比例4
该对比例与实施例1的区别仅在于,该对比例支架本体中不含有Y2O3,其他与实施例1一样,此处不再累述。
对比例5
该对比例与实施例1的区别仅在于,该对比例保护层中不含有碳纤维和碳酸钙,其他与实施例1一样,此处不再累述。
对比例6
该对比例与实施例1的区别仅在于,该对比例保护层中不含有聚四氟乙烯,其他与实施例1一样,此处不再累述。
本发明上述实施例中所用的助剂均为本领域常见常用的加工助剂,如润滑剂、
抗弯强度的测试标准GB/T 6569-86,韧性的测试标准ASTM B645-2007,耐蚀性中分别为常温下用pH5-6酸喷雾处理,测其表面出现锈迹的时间以及常温下用含0.9%氯化钠溶液喷雾处理,测其表面出现锈迹的时间。
将实施例1-5及对比例1-6中的支架进行性能检测,检测结果如下表1所示。
表1:实施例1-5及对比例1-6中的支架的性能测试结果
综上所述,本发明支架在主体表面设置一层保护层,进一步保证支架力学性能的同时增加支架的耐腐蚀性。本发明主体中含有与保护层相同的碳纤维和矿石粉,进而提高支架的强度、抗弯强度等力学性能。再者,本发明保护浆料中生物质纤维、碳纤维、矿石粉、助剂与聚四氟乙烯挤出造粒,通过加压成型设置在本体表面,使保护层料更好地均匀地附着在支架本体表面,进而提高支架的耐蚀性。
本处实施例对本发明要求保护的技术范围中点值未穷尽之处以及在实施例技术方案中对单个或者多个技术特征的同等替换所形成的新的技术方案,同样都在本发明要求保护的范围内,并且本发明方案所有涉及的参数间如未特别说明,则相互之间不存在不可替换的唯一性组合。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种修改或补充或采用类似的方式替代,但并不会偏离本发明的精神或者超越所附权利要求书所定义的范围。
尽管对本发明已作出了详细的说明并引证了一些具体实施例,但是对本领域熟练技术人员来说,只要不离开本发明的精神和范围可作各种变化或修正是显然的。
Claims (9)
1.一种支架,其特征在于,所述的支架包括支架本体以及支架本体表面的保护层,其中,所述的支架本体由复合陶瓷制成,所述的复合陶瓷包括如下重量份数的原料:Si3N4:60-100份、SiC:10-30份、SiO2:10-30份、碳纤维:5-10份、MgO:1-5份、Y2O3:1-5份、矿石粉:5-10份。
2.根据权利要求1所述的支架,其特征在于,所述保护层包括如下重量份数的原料:生物质纤维10-20份、碳纤维5-10份、聚四氟乙烯40-60份、矿石粉5-10份、助剂1-8份。
3.根据权利要求1或2所述的支架,其特征在于,所述的矿石粉为碳酸钙、硅酸钙、滑石粉中的一种或多种。
4.根据权利要求3或2所述的支架,其特征在于,所述的矿石粉的平均粒径为80μm-500μm。
5.根据权利要求2所述的支架,其特征在于,所述的生物质纤维为秸秆粉、木粉、木康粉中的一种或多种。
6.根据权利要求2或5所述的支架,其特征在于,所述的生物质纤维的平均粒径为20μm-100μm。
7.一种支架的制备方法,其特征在于,所述的制备方法包括如下步骤:
称取复合陶瓷的原料:Si3N4 60-100份、SiC 10-30份、SiO2 10-30份、碳纤维10-20份、MgO1-5份、Y2O31-5份、矿石粉5-15份,将复合陶瓷的原料压制成坯件,并烧结成支架本体;
称取保护层的原料:生物质纤维10-20份、碳纤维5-10份、聚四氟乙烯40-60份、矿石粉5-10份、助剂1-8份;先将生物质纤维研磨成粒径为20μm-100μm的粉末;然后加入碳纤维、矿石粉和助剂并加热至100-130℃进行预混合;
将预混合的粉体与聚四氟乙烯挤出造粒,得到保护层料;
将保护层料通过挤出成型置于支架本体表面,得支架成品。
8.根据权利要求7所述的支架的制备方法,其特征在于,压制的压力为100-120MPa。
9.根据权利要求7所述的支架的制备方法,其特征在于,所述的烧结为1450-1550℃。
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