CN110003695A - 一种防辐射涂料及其制备方法 - Google Patents
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Abstract
本发明公布了一种防辐射涂料包含以下重量份的原料:10‑20份硅酸镁锂、50‑60份重晶石,10‑20份牡蛎壳,10‑20份活性炭,20‑30份无机胶凝剂,20‑30有机胶黏剂,1‑5份浓硫酸,50‑100份蒸馏水,还公开了该涂料的制备方法,方法独特,制得的涂料不仅具有防辐射性,还具有很好的吸附除味性能。
Description
技术领域
本发明涉及涂料领域,特别是一种防辐射涂料及其制备方法。
背景技术
随着放射线在医疗卫生、国防军工、科研、工业、农业等领域广泛应用,特别是x、γ射线,成为人们应用最多的电离辐射;辐射技术给社会带来了巨大的经济效益,但另一方面,由于其能量高,穿透力强,对人体生理机能有不同程度的损害作用;如长期接触X射线照射的人会出现皮肤烧伤、毛发脱落、眼晶体混浊、白血球减少、性功能减退等症状;重者导致基因缺陷和诱发癌症;为阻挡x、γ射线的辐射,早期人们采用铅板防护,众所周知,铅质软而有毒,时间长易蠕变,防护施工程序复杂,价格昂贵;x、γ射线均有较强的穿透力,它可以穿过普通厚度建筑物墙体、天棚,虽然辐射强度有所减弱,但仍对人体健康构成一定威协。
因此,研究开发一种具有较好防辐射作用的室内用涂料具有重要意义,也符合目前市场的需求,具有较好的应用前景。
发明内容
为了解决上述存在的问题,本发明公开了一种防辐射涂料,包含以下重量份的原料:
10-20份硅酸镁锂、50-60份重晶石,10-20份牡蛎壳,10-20份活性炭,20-30份无机胶凝剂,20-30有机胶黏剂,1-5份浓硫酸,50-100份蒸馏水。
优选地,所述无机胶凝剂为普通硅酸盐水泥或水泥熟料或石膏或水玻璃。
优选地,所述有机胶黏剂为环氧树脂胶、聚氨酯胶、聚醋酸乙烯胶、聚乙烯醇缩甲醛胶的一种或多种混合。
本发明还公开了以上任何一种防辐射涂料的制备方法,包含以下步骤:
S1:将重晶石粉碎,经破碎的重晶石采用所述硫酸溶液冲洗,得到硫酸钡;将硫酸钡干燥至含水量低于12%,得硫酸钡粉;将牡蛎壳清洗,干燥、粉碎、过筛,得牡蛎壳粉;
S2:制备前驱体凝胶:称取硅酸镁锂、硫酸钡粉、牡蛎壳粉以及活性炭粉,加入蒸馏水,在冰浴环境下搅拌成混合凝胶体;往混合凝胶体中滴加所述NaOH溶液,在冰浴环境继续搅拌1-2h后过滤得前驱体凝胶,采用蒸馏水洗涤;
S3:冷冻干燥:将上述前驱体凝胶放入冰箱中冷冻,采用真空冷冻干燥机进行干燥,制得前驱体粉体;
S4:称取无机胶凝剂过筛加入到前驱体粉体中,搅拌均匀,得混合料;
S5:往混合料加入有机胶黏剂,在25-30℃温度下加水搅拌均匀,搅拌时间2-3h。
进一步,所述硫酸钡粉和/或无机胶凝剂和/或牡蛎壳粉和/或活性炭粉的粒度为200-500目。
进一步地,所述步骤S2所述的冰浴环境控制在10℃以下。
进一步地,所述步骤S2中的NaOH溶液的添加量占所述混合凝胶体质量的1-5%。
进一步地,步骤S2中所述NaOH溶液浓度为10-15%。
进一步地,步骤S1中所述硫酸溶液浓度为60-70%。
本发明还公开了一种防辐射涂料在建筑物内墙上的应用。
本发明的有益效果:(1)本发明结合使用无机胶凝剂和有价胶黏剂,涂料的附着力增强;(2)由于硅酸镁锂能在水中发生溶胀,并形成胶体,将硫酸钡粉、活性炭粉、无机胶凝剂等均匀地分散在胶体体系中,而胶体又相互分布在活性炭的孔隙中,(3)采用冷冻干燥使得两种物质分布的更均匀,使得活性炭孔径更丰富,能够更加稳定地吸附物质,被吸附的物质分子量分布更广;(4)同时采用多孔结构的牡蛎壳粉,既能对其二次利用,又能进一步提高吸附除味的效果,而且还能有效的改善各物料间的相容性,提高涂膜表面强度。(5)本发明避免了添加铅粉的传统方法,安全环保性更好。
具体实施方式
需要说明的是,在不冲突的情况下,本发明中的实施例及实施例中的特征可以相互组合。
实施例1
一种防辐射涂料的制备方法,包含以下步骤:
S1:按重量份数算,称取50份重晶石,将其粉碎,经破碎的重晶石采用所述硫酸溶液冲洗,得到硫酸钡;将硫酸钡干燥至含水量低于12%,得硫酸钡粉;称取10份牡蛎壳,将其清洗,干燥、粉碎、过筛,得牡蛎壳粉;
S2:制备前驱体凝胶:按重量份数算,称取10份硅酸镁锂、50份硫酸钡粉、10份牡蛎壳粉以及10份活性炭粉,加入50份蒸馏水,在冰浴环境下搅拌成混合凝胶体;往混合凝胶体中滴加所述NaOH溶液,在冰浴环境继续搅拌1h后过滤得前驱体凝胶,采用蒸馏水洗涤;
S3:冷冻干燥:将上述前驱体凝胶放入冰箱中冷冻,采用真空冷冻干燥机进行干燥,制得前驱体粉体;
S4:称取20份无机胶凝剂过筛加入到所述前驱体粉体中,搅拌均匀,得混合料;所述无机胶凝剂采用42.5普通硅酸盐水泥。
S5:往混合料加入20份有机胶黏剂,在25℃温度下加水搅拌均匀,搅拌时间2h,所述有机胶黏剂采用聚乙烯醇缩甲醛胶(108胶)
所述硫酸钡粉、无机胶凝剂、牡蛎壳粉、活性炭粉的粒度为200目。
所述步骤S2所述的冰浴环境控制在10℃以下。
所述步骤S2中的NaOH溶液的添加量占所述混合凝胶体质量的1%。
步骤S2中所述NaOH溶液浓度为10%。
步骤S1中所述硫酸浓度为60%。
实施例2
一种防辐射涂料的制备方法,包含以下步骤:
S1:按重量份数算,称取50份重晶石,将其粉碎,经破碎的重晶石采用所述硫酸溶液冲洗,得到硫酸钡;将硫酸钡干燥至含水量低于12%,得硫酸钡粉;取20份牡蛎壳将其清洗,干燥、粉碎、过筛,得牡蛎壳粉;
S2:制备前驱体凝胶:按重量份数算,称取12份硅酸镁锂、55份硫酸钡粉、15份牡蛎壳粉以及15份活性炭粉,加入60份蒸馏水,在冰浴环境下搅拌成混合凝胶体;往混合凝胶体中滴加所述NaOH溶液,在冰浴环境继续搅拌1.5h后过滤得前驱体凝胶,采用蒸馏水洗涤;
S3:冷冻干燥:将上述前驱体凝胶放入冰箱中冷冻,采用真空冷冻干燥机进行干燥,制得前驱体粉体;
S4:称取25份无机胶凝剂过筛加入到所述前驱体粉体中,搅拌均匀,得混合料;所述无机胶凝剂采用水泥熟料。
S5:往混合料加入26份有机胶黏剂,在25℃温度下加水搅拌均匀,搅拌时间2.5h,所述有机胶黏剂采用聚乙烯醇缩甲醛胶(108胶)。
所述硫酸钡粉、无机胶凝剂、牡蛎壳粉、活性炭粉的粒度为300目。
所述步骤S2所述的冰浴环境控制在10℃以下。
所述步骤S2中的NaOH溶液的添加量占所述混合凝胶体质量的3%。
步骤S1中所述硫酸浓度为65%;步骤S2中所述NaOH溶液浓度为12%。
实施例3
一种防辐射涂料的制备方法,包含以下步骤:
S1:按重量份数算,称取50份重晶石,将其粉碎,经破碎的重晶石采用所述硫酸溶液冲洗,得到硫酸钡;将硫酸钡干燥至含水量低于12%,得硫酸钡粉;取20份将其清洗,干燥、粉碎、过筛,得牡蛎壳粉;
S2:制备前驱体凝胶:按重量份数算,称取15份硅酸镁锂、60份硫酸钡粉、20份牡蛎壳粉以及17份活性炭粉,加入60份蒸馏水,在冰浴环境下搅拌成混合凝胶体;往混合凝胶体中滴加所述NaOH溶液,在冰浴环境继续搅拌2h后过滤得前驱体凝胶,采用蒸馏水洗涤;
S3:冷冻干燥:将上述前驱体凝胶放入冰箱中冷冻,采用真空冷冻干燥机进行干燥,制得前驱体粉体;
S4:称取25份无机胶凝剂过筛加入到所述前驱体粉体中,搅拌均匀,得混合料;所述无胶凝剂采用石膏。
S5:往混合料加入25份有机胶黏剂,在25℃温度下加水搅拌均匀,搅拌时间2h;所述有机胶黏剂采用聚乙烯醇缩甲醛胶(108胶)。
所述硫酸钡粉、无机胶凝剂、牡蛎壳粉、活性炭粉的粒度为300目。
所述步骤S2所述的冰浴环境控制在10℃以下。
所述步骤S2中的NaOH溶液的添加量占所述混合凝胶体质量的15%。
步骤S2中所述NaOH溶液浓度为10%。
步骤S1中所述硫酸溶液浓度为70%。
实施例4
一种防辐射涂料的制备方法,包含以下步骤:
S1:将重晶石粉碎,经破碎的重晶石采用所述硫酸溶液冲洗,得到硫酸钡;将硫酸钡干燥至含水量低于12%,得硫酸钡粉;将牡蛎壳清洗,干燥、粉碎、过筛,得牡蛎壳粉;
S2:制备前驱体凝胶:按重量份数算,称取20份硅酸镁锂、60份硫酸钡粉、20份牡蛎壳粉以及10份活性炭粉,加入60份蒸馏水,在冰浴环境下搅拌成混合凝胶体;往混合凝胶体中滴加所述NaOH溶液,在冰浴环境继续搅拌2h后过滤得前驱体凝胶,采用蒸馏水洗涤;
S3:冷冻干燥:将上述前驱体凝胶放入冰箱中冷冻,采用真空冷冻干燥机进行干燥,制得前驱体粉体;
S4:称取30份无机胶凝剂过筛加入到所述前驱体粉体中,搅拌均匀,得混合料;所述无胶凝剂采用水玻璃。
S5:往混合料加入30份有机胶黏剂,在25℃温度下加水搅拌均匀,搅拌时间2h。所述有机胶黏剂采用聚乙烯醇缩甲醛胶(108胶)。
所述硫酸钡粉、无机胶凝剂、牡蛎壳粉、活性炭粉的粒度为500目。
所述步骤S2所述的冰浴环境控制在10℃以下。
所述步骤S2中的NaOH溶液的添加量占所述混合凝胶体质量的5%。
步骤S2中所述NaOH溶液浓度为15%。
步骤S1中所述硫酸溶液浓度为60%。
实施例5
本实施例是在实施例3的基础上作出的变化,具体是所述无机胶凝剂采用石膏;有机胶黏剂采用环氧树脂胶。
实施例6
本实施例是在实施例3的基础上作出的变化,具体是所述无机胶凝剂为水玻璃,有机胶黏剂采用聚氨酯胶。
对市售的普通水性乳胶漆(宣伟(上海)涂料有限公司生产的普乐200内墙涂料)作为对比例以及实施例1-6的防辐射涂料进行性能对比实验,具体结果见表1。
表1为实施例1-6及对比例的性能测试以及环保指标测试结果
从表1可以看出,与普通的水性内墙乳胶漆(对比例)相比,本发明制备的内墙防辐射涂料(实施例1-6)通过防辐射材料的添加,其防辐射效果明显提升,而且表面干燥时间线性缩短。同时,防辐射涂料中添加活性炭和牡蛎壳粉,可以明显提高涂料的环保特性,而且本发明不含重金属铅,安全可靠性好。
上述实施例仅描述现有设备最优使用方式,而运用类似的常用手段代替本实施例中的元素,均落入保护范围。
Claims (10)
1.一种防辐射涂料,其特征在于:包含以下重量份的原料:
10-20份硅酸镁锂、50-60份重晶石,10-20份牡蛎壳,10-20份活性炭,20-30份无机胶凝剂,20-30有机胶黏剂,1-5份浓硫酸,50-100份蒸馏水。
2.如权利要求1所述的一种防辐射涂料,其特征在于:所述无机胶凝剂为普通硅酸盐水泥或水泥熟料或石膏或水玻璃。
3.如权利要求1所述的一种防辐射涂料,其特征在于:所述有机胶黏剂为环氧树脂胶、聚氨酯胶、聚醋酸乙烯胶、聚乙烯醇缩甲醛胶的一种或多种混合。
4.根据权利要求1-3任何一项权利要求所述的一种防辐射涂料,其特征在于:所述防辐射涂料包含有以下步骤的制备方法:
S1:将重晶石粉碎,经破碎的重晶石采用所述浓硫酸配制的硫酸溶液冲洗,得到硫酸钡;将硫酸钡干燥至含水量低于12%,得硫酸钡粉;将牡蛎壳清洗,干燥、粉碎、过筛,得牡蛎壳粉;
S2:制备前驱体凝胶:称取硅酸镁锂、硫酸钡粉、牡蛎壳粉以及活性炭粉,加入蒸馏水,在冰浴环境下搅拌成混合凝胶体;往混合凝胶体中滴加所述NaOH溶液,在冰浴环境继续搅拌1-2h后过滤得前驱体凝胶,采用蒸馏水洗涤;
S3:冷冻干燥:将上述前驱体凝胶放入冰箱中冷冻,采用真空冷冻干燥机进行干燥,制得前驱体粉体;
S4:称取无机胶凝剂过筛加入到前驱体粉体中,搅拌均匀,得混合料;
S5:往混合料加入有机胶黏剂,在25-30℃温度下加水搅拌均匀,搅拌时间2-3h。
5.根据权利要求4所述的一种防辐射涂料,其特征在于:所述硫酸钡粉和/或无机胶凝剂和/或牡蛎壳粉和/或活性炭粉的粒度为200-500目。
6.根据权利要求5所述的一种防辐射涂料,其特征在于:所述步骤S2所述的冰浴环境控制在10℃以下。
7.根据权利要求6所述的一种防辐射涂料,其特征在于:所述步骤S2中的NaOH溶液的添加量占所述混合凝胶体质量的1-5%。
8.根据权利要求7所述的一种防辐射涂料,其特征在于:步骤S2中所述NaOH溶液浓度为10-15%。
9.根据权利要求8所述的一种防辐射涂料,其特征在于:步骤S1中所述硫酸溶液浓度为60-70%。
10.如权利要求5-9任意一项所述的一种防辐射涂料在建筑物内墙上的应用。
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