CN111559898B - 一种高强度轻质石膏龙骨及应用 - Google Patents
一种高强度轻质石膏龙骨及应用 Download PDFInfo
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- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
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Abstract
本发明属于建筑材料技术领域,尤其涉及一种高强度轻质石膏龙骨及其应用。所述高强度轻质龙骨石膏,由以下原料制成:60‑80份工业副产熟石膏、8‑10份轻质碳酸钙、6‑8份矿渣微粉、20‑30份多孔聚丙烯纤维、2‑3份缓凝剂、1‑2份减水剂、4‑8份水泥制成。本发明所制的是石膏龙骨,抗压强度、抗折强度高,而且质量轻;可广泛应用于建筑隔墙龙骨。
Description
技术领域
本发明属于建筑材料技术领域,尤其涉及一种高强度轻质石膏龙骨及其应用。
背景技术
工业副产石膏是工业生产中由化学反应生成的以硫酸钙为主要成分的工业副产品。工业副产石膏主要有燃煤电厂排放的脱硫石膏;肥工业排放的磷石膏;柠檬酸厂排放的柠檬酸石膏;钛白粉厂排放的钛石膏;氟化氢厂排放的氟石膏;石膏粉设备制盐工业排放的盐石膏等。随着我国现在工业的发展,工业副产石膏的排放量急剧增长。这些工业副石膏绝大部分未被利用,占用大量土地而露天堆放,已成为严重污染环境的工业废渣,会给电力、化工等工业的可持续发展带来严重的影响。工业副产石膏的综合回收利用是电力、化工等工业的可持续发展的关键。
目前,工业副产石膏先已被广泛应用于建筑材料领域,如石膏板、石膏砌块等等,具有质轻、防火、保温等优点。建筑龙骨是用来支撑造型、固定结构的一种建筑材料,广泛应用于宾馆、候机楼、客运站、车站、剧场、商场、工厂、办公楼、旧建筑改造、室内装修设置等场所。龙骨根据建筑材料的不同,可分为木龙骨、轻钢龙骨、铝合金龙骨、钢龙骨等等。由于木龙骨、轻钢龙骨、铝合金龙骨、钢龙骨等龙骨的生产成本高,人们研究用石膏来作为龙骨的基本材料。
如公开号为CN1686916A的专利公开了一种整体成型高压石膏龙骨,其组成为纤维5-30%、余量石膏;通过成型压机中高压沥水压制成制成石膏龙骨;该龙骨在建筑施工过程中与石膏板结合应用。该专利技术是通过添加植物纤维、高压压制来改善石膏龙骨的强度,但是强度还是较低,而且石膏龙骨重量较高。
发明内容
为了解决现有技术中存在的上述技术问题,本发明提供了一种强度轻质石膏龙骨及其应用。
具体是通过以下技术方案实现的:
一种高强度轻质龙骨石膏,由以下原料制成:60-80份工业副产熟石膏、8-10份轻质碳酸钙、6-8份矿渣微粉、20-30份多孔聚丙烯纤维、2-3份缓凝剂、1-2份减水剂、4-8份水泥制成。
优选地,所述改性聚丙烯纤维的制备过程为:取熔融指数为30-50的聚丙烯切片,加入纳米石膏粉和硬脂酸钠相混合,在螺杆挤压机中挤出,制成共混纤维;将共混纤维放入5%的盐酸溶液中浸泡处理4h,取出,水洗,干燥,制得多孔聚丙烯纤维。
优选地,所述纳米石膏粉的添加量为聚丙烯切片质量的3-5%,硬脂酸钠的添加量为聚丙烯切片质量的0.1-0.3%。
优选地,所述缓凝剂为木质素磺酸钠、酒石酸钾中的一种;减水剂为氨基磺酸盐系高效减水剂。
优选地,所述高强度轻质龙骨石膏的制备方法,具体包括以下步骤:
(1)将工业复产熟石膏与轻质碳酸钙混合,加水制成料浆浓度为15%的悬浮液;向悬浮液中加入增强剂搅拌均匀后,于80-90℃下搅拌反应0.5h,制得混合溶液A;向混合溶液A中加入矿渣微粉混合,制得混合溶液B;
(2)向混合溶液B中加入活性激发剂搅拌处理30min,在100-110℃下烘干,制得初始原料;
(3)将初始原料与多孔聚丙烯纤维、缓凝剂、减水剂、水泥混合,加入其质量100-110%的水搅拌均匀,制得成型料浆;
(4)将成型料浆送到成型压机中沥水压制成型,成型压力为3-4kg/cm2,在50-60℃下处理6-8min,养护即可。
优选地,所述步骤(1),所述增强剂由硅烷偶联剂、柠檬酸按3:1的质量比组成;增强剂的添加量为悬浮液质量的4%。
优选地,所述活性激发剂为氢氧化钠,添加量为混合溶液B质量的2-3%。
本发明还提供了一种上述石膏龙骨在建筑隔墙龙骨中的应用。
优选地,所述石膏龙骨为长方体龙骨石膏、形体石膏龙骨;石膏龙骨与石膏板、复合墙板之间用使用螺钉固定连接。
需要说明的是,工业副产熟石膏是磷石膏、脱硫石膏、氟石膏、柠檬酸石膏、盐石膏、乳石膏、黄石膏、苏打石膏中的一种或多种,经煅烧脱去部分或全部结晶水后的产物;其主要化学成分为CaSO4·1/2H2O。
本发明的有益效果在于:
本发明采用增强剂对石膏原料、碳酸钙进行处理,改善了石膏原料、碳酸钙表面的活性、疏水性能;将处理后的石膏原料、碳酸钙,采用矿渣微粉、活性激发剂进行处理,有效增强了石膏原料的强度。采用纳米石膏粉、硬脂酸钠对聚丙烯改性制成多孔聚丙烯纤维,不仅改善了聚丙烯纤维的强度,还改善了聚丙烯纤维在石膏料浆中的分散性能。电磁搅拌能进一步促进各原料的之间的分散性。
本发明所制的是石膏龙骨,抗压强度、抗折强度高,而且质量轻;可广泛应用于建筑隔墙龙骨。
具体实施方式
下面结合具体的实施方式来对本发明的技术方案做进一步的限定,但要求保护的范围不仅局限于所作的描述。
实施例1石膏龙骨
原料:80kg工业副产熟石膏、8kg轻质碳酸钙、8kg矿渣微粉、20kg多孔聚丙烯纤维、3kg木质素磺酸钠、1kg氨基磺酸盐系高效减水剂、8kg水泥制成。
改性聚丙烯纤维的制备过程为:取熔融指数为30-50的聚丙烯切片,加入其质量5%的纳米石膏粉和其质量0.1%的硬脂酸钠相混合,在螺杆挤压机中挤出,制成共混纤维;将共混纤维放入5%的盐酸溶液中浸泡处理4h,取出,水洗,干燥,制得多孔聚丙烯纤维。
制备方法:
(1)将工业复产熟石膏与轻质碳酸钙混合,加水制成料浆浓度为15%的悬浮液;向悬浮液中加入增强剂搅拌均匀后,于80-90℃下搅拌反应0.5h,制得混合溶液A;向混合溶液A中加入矿渣微粉混合,制得混合溶液B;
(2)向混合溶液B中加入其质量2%的氢氧化钠搅拌处理30min,在100-110℃下烘干,制得初始原料;
(3)将初始原料与多孔聚丙烯纤维、缓凝剂、减水剂、水泥混合,加入其质量100%的水搅拌均匀,制得成型料浆;
(4)将成型料浆送到成型压机中沥水压制成型,成型压力为3-4kg/cm2,在50-60℃下处理6-8min,养护即可。
所述步骤(1),增强剂由硅烷偶联剂、柠檬酸按3:1的质量比组成;增强剂的添加量为悬浮液质量的4%。
实施例2石膏龙骨
原料:65kg工业副产熟石膏、9kg轻质碳酸钙、7kg矿渣微粉、24kg多孔聚丙烯纤维、2.4kg酒石酸钾、1.5kg氨基磺酸盐系高效减水剂、6kg水泥制成。
改性聚丙烯纤维的制备过程为:取熔融指数为30-50的聚丙烯切片,加入其质量4%的纳米石膏粉和其质量0.2%的硬脂酸钠相混合,在螺杆挤压机中挤出,制成共混纤维;将共混纤维放入5%的盐酸溶液中浸泡处理处理4h,取出,水洗,干燥,制得多孔聚丙烯纤维。
制备方法:
(1)将工业复产熟石膏与轻质碳酸钙混合,加水制成料浆浓度为15%的悬浮液;向悬浮液中加入增强剂搅拌均匀后,于80-90℃下搅拌反应0.5h,制得混合溶液A;向混合溶液A中加入矿渣微粉混合,制得混合溶液B;
(2)向混合溶液B中加入其质量2.4%的氢氧化钠搅拌处理30min,在100-110℃下烘干,制得初始原料;
(3)将初始原料与多孔聚丙烯纤维、缓凝剂、减水剂、水泥混合,加入其质量110%的水搅拌均匀,制得成型料浆;
(4)将成型料浆送到成型压机中沥水压制成型,成型压力为3-4kg/cm2,在50-60℃下处理6-8min,养护即可。
所述步骤(1),增强剂由硅烷偶联剂、柠檬酸按3:1的质量比组成;增强剂的添加量为悬浮液质量的4%。
实施例3石膏龙骨
原料:60kg工业副产熟石膏、10kg轻质碳酸钙、6kg矿渣微粉、30kg多孔聚丙烯纤维、2kg木质素磺酸钠、2kg氨基磺酸盐系高效减水剂、4kg水泥制成。
改性聚丙烯纤维的制备过程为:取熔融指数为30-50的聚丙烯切片,加入其质量5%的纳米石膏粉和其质量0.3%的硬脂酸钠相混合,在螺杆挤压机中挤出,制成共混纤维;将共混纤维放入5%的盐酸溶液中浸泡处理4h,取出,水洗,干燥,制得多孔聚丙烯纤维。
制备方法:
(1)将工业复产熟石膏与轻质碳酸钙混合,加水制成料浆浓度为15%的悬浮液;向悬浮液中加入增强剂搅拌均匀后,于80-90℃下搅拌反应0.5h,制得混合溶液A;向混合溶液A中加入矿渣微粉混合,制得混合溶液B;
(2)向混合溶液B中加入其质量3%的氢氧化钠搅拌处理30min,在100-110℃下烘干,制得初始原料;
(3)将初始原料与多孔聚丙烯纤维、缓凝剂、减水剂、水泥混合,加入其质量100-110%的水搅拌均匀,制得成型料浆;
(4)将成型料浆送到成型压机中沥水压制成型,成型压力为3-4kg/cm2,在50-60℃下处理6-8min,养护即可。
所述步骤(1),增强剂由硅烷偶联剂、柠檬酸按3:1的质量比组成;增强剂的添加量为悬浮液质量的4%。
对比例1
对比例1与实施例1的在于原料中添加的普通聚丙烯纤维。
对比例2
对比例2与实施例1的区别在于没有采用增强剂、氢氧化钠进行处理,而是将工业复产熟石膏、轻质碳酸钙、矿渣微粉直接混合成初始原料。
对比例3
公开号为CN1686916A的专利公开的一种整体成型高压石膏龙骨,采用30%木浆、70%石膏为原料制成,
实验例1
采用实施例1-6和对比例1-5制备的石膏龙骨进行性能检测;检测依据:密度参照标准《石膏砌块》(JC/T 698-2010)进行检测,抗压强度、抗折强度参照《建筑石膏》(GB9776-88)进行检测。检测结果如表1所示:
表1地暖模块的性能指标
在此有必要指出的是,以上实施例和试验例仅限于对本发明的技术方案做进一步的阐述和理解,不能理解为对本发明的技术方案做进一步的限定,本领域技术人员作出的非突出实质性特征和显著进步的发明创造,仍然属于本发明的保护范畴。
Claims (7)
1.一种高强度轻质龙骨石膏,其特征在于,由以下原料制成:60-80份工业副产熟石膏、8-10份轻质碳酸钙、6-8份矿渣微粉、20-30份多孔聚丙烯纤维、2-3份缓凝剂、1-2份减水剂、4-8份水泥制成;
所述改性聚丙烯纤维的制备过程为:取熔融指数为30-50的聚丙烯切片,加入纳米石膏粉和硬脂酸钠相混合,在螺杆挤压机中挤出,制成共混纤维;将共混纤维放入5%的盐酸溶液中浸泡处理4h,取出,水洗,干燥,制得多孔聚丙烯纤维;
所述纳米石膏粉的添加量为聚丙烯切片质量的3-5%,硬脂酸钠的添加量为聚丙烯切片质量的0.1-0.3%。
2.如权利要求1所述的高强度轻质龙骨石膏,其特征在于,所述缓凝剂为木质素磺酸钠、酒石酸钾中的一种;减水剂为氨基磺酸盐系高效减水剂。
3.如权利要求1所述的高强度轻质龙骨石膏的制备方法,其特征在于,具体包括以下步骤:
(1)将工业副 产熟石膏与轻质碳酸钙混合,加水制成料浆浓度为15%的悬浮液;向悬浮液中加入增强剂搅拌均匀后,于80-90℃下搅拌反应0.5h,制得混合溶液A;向混合溶液A中加入矿渣微粉混合,制得混合溶液B;
(2)向混合溶液B中加入活性激发剂搅拌处理30min,在100-110℃下烘干,制得初始原料;
(3)将初始原料与多孔聚丙烯纤维、缓凝剂、减水剂、水泥混合,加入其质量100-110%的水制成成型料浆;
(4)将成型料浆送到成型压机中沥水压制成型,成型压力为3-5kg/cm2,在50-60℃下处理6-8min,养护即可。
4.如权利要求3所述的高强度轻质龙骨石膏的制备方法,其特征在于,所述步骤(1),所述增强剂由硅烷偶联剂、柠檬酸按3:1的质量比组成;增强剂的添加量为悬浮液质量的4%。
5.如权利要求3所述的高强度轻质龙骨石膏的制备方法,其特征在于,所述活性激发剂为氢氧化钠,添加量为混合溶液B质量的2-3%。
6.一种如权利要求3所述制备方法所制得的石膏龙骨在建筑隔墙石膏龙骨中的应用。
7.如权利要求6所述的应用,其特征在于,所述石膏龙骨为长方体龙骨石膏、形体石膏龙骨;石膏龙骨与石膏板、复合墙板之间用使用螺钉固定连接。
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