白炭黑对搪瓷涂层耐酸性能的影响研究  

Influence of silica hydrated on acid resistance of enamel coating

作　　者：舒明勇[1,2] 尹海英[1] 岳永双 罗坤[1] Shu Mingyong Yin Haiying Yue Yongshuang Luo Kun(School of Biological and Chemical Engineering, Panzhihua University, Panzhihua 617000, China Comprehensive Utilization Key Laboratory of Metallurgical Assistance of Mineral Resources of Panzhihua City)

机构地区：[1]攀枝花学院生物与化学工程学院,四川攀枝花617000 [2]攀枝花市冶金辅助矿产资源综合利用重点实验室

出　　处：《无机盐工业》2017年第2期31-34,63,共5页Inorganic Chemicals Industry

基　　金：四川省重点应用基础研究项目(2016JY0230);攀枝花市产业推进项目(2015CY-G-12)

摘　　要：搪瓷釉料中添加不同粒度及不同质量的白炭黑,在BTC245R搪瓷钢表面烧制成搪瓷涂层,通过XRD及SEM分析研究了搪瓷涂层在硫酸溶液中的耐酸性能。研究表明,当粒度为1~2μm的白炭黑添加量不超过6%(质量分数)时,搪瓷料浆的分散性和流变性更好,增加了料浆涂搪时的悬浮和停留作用,利于降低搪瓷烧制时的晶化温度,促进β-SiO_2液态相迁移进入[AlO_4]网络中,形成稳定的NaAlSiO_4晶相,提高了搪瓷涂层的耐酸性能,使耐酸度降至11.84 mg/(cm^2·d),满足了工业搪瓷涂层的耐酸性能要求。Silica hydrated with different sizes and masses was added in enamel glaze,which was fired into enamel coatings on the surface of BTC245 R enamel steel.Acid resistance of the enamel coatings in H_2SO_4 solution was analyzed by XRD and SEM.Results showed that when the addition of silica hydrated with 1~2 μm in particle size did not exceed 6%（mass fraction）,the enamel slurry had better dispersion and rheology,and the suspension and residence effects during slurry coating were enhanced.It also helped reduce the crystallization temperature during enamel firing,and promoted the β-SiO_2 liquid phase migrate into the[AlO_4] network to form stable NaAlSiO_4 crystalline phase.Furthermore,acid resistance of enamel coatings was improved,which was reduced to 11.84 mg/（cm^2·d）,thus meeting the acid resistance requirements for industrial enamel coatings.

关 键 词：白炭黑 搪瓷涂层 耐酸性 

分 类 号：TQ127.2[化学工程—无机化工]