CN117024053A - 一种防火防潮的复合隔墙板及其制备方法 - Google Patents
一种防火防潮的复合隔墙板及其制备方法 Download PDFInfo
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Abstract
本发明涉及建筑材料技术领域,具体为一种防火防潮的复合隔墙板及其制备方法。本发明以甲基丙烯酸甲酯、丙烯酸丁酯、甲基丙烯酸十二氟庚酯和KH570为单体,在水中反应,加入具有乳化效果的乙二胺基磺酸钠,提高混合乳液的稳定性;待反应完全后除去水分和KH570水解产物甲醇,用丙酮溶解,以乙二胺基磺酸钠为扩链剂,加入异氰酸酯基封端的聚氨酯预聚体,在聚丙烯酸酯的侧链实现接枝,形成具有亲水、疏水链段的聚氨酯改性聚丙烯酸酯;将其与聚羧酸减水剂、聚乙烯纤维、矿粉、氧化钙粉末、氢氧化镁、石膏粉混合,并掺杂水泥改性,制得防火防潮的复合隔墙板抗压强度达到20MPa以上,耐火极限达到6.5h以上,饱和吸水率小于5%,具有良好的防火防潮性能。
Description
技术领域
本发明涉及建筑材料技术领域,具体为一种防火防潮的复合隔墙板及其制备方法。
背景技术
隔墙板是一种新型节能墙材料,其外型像空心楼板,通常是由无害化磷石膏、轻质钢渣、粉煤灰等多种工业废渣组成,经变频蒸汽加压养护而成。轻质隔墙板具有质量轻、强度高、多重环保、保温隔热、隔音、呼吸调湿、防火、快速施工、降低墙体成本等优点。但石膏板存在耐水性差、强度低、易发霉的问题,限制了石膏板的推广应用,墙板在潮湿区域的通体耐水性能持久性还需进一步提升。因此,制备具有防火防潮性能的隔墙板具有重要的意义。
发明内容
本发明的目的在于提供一种防火防潮的复合隔墙板及其制备方法,以解决上述背景技术中提出的问题。
为了解决上述技术问题,本发明提供如下技术方案:一种防火防潮的复合隔墙板及其制备方法,包括以下步骤:一种防火防潮的复合隔墙板的制备方法,包括以下步骤:
步骤1:聚己内酯二元醇和异佛尔酮二异氰酸酯混合,再加入二月桂酸二丁基锡催化剂,搅拌加热反应,得到聚氨酯预聚体;
步骤2:在氮气环境下,将乙二胺基磺酸钠、甲基丙烯酸甲酯、丙烯酸丁酯、甲基丙烯酸十二氟庚酯、KH570、水混合,搅拌并超声分散后再加入过硫酸铵,然后升温反应,得到硅氟改性丙烯酸酯共聚物乳液;干燥脱除水和甲醇,备用;
步骤3:取干燥的硅氟改性丙烯酸酯共聚物,用丙酮溶解后,氮气环境下加入聚氨酯预聚体、二月桂酸二丁基锡催化剂和乙二胺基磺酸钠,升温后保温反应,得到聚氨酯改性聚丙烯酸酯;
步骤4:将聚氨酯改性聚丙烯酸酯、聚羧酸减水剂、聚乙烯纤维、矿粉、氧化钙粉末、氢氧化镁、石膏粉、水泥、水混合搅拌后,挤压注浆;待浆体初凝后抽芯,终凝后拆模、翻板、干燥得到防火防潮复合隔墙板。
进一步的,步骤1中,羟基和异氰酸酯基的摩尔比为1:1.15~1.3。
进一步的,步骤1中,聚己内酯二元醇和异佛尔酮二异氰酸酯的反应温度为70~80℃,反应时间为1~2h。
进一步的,步骤2中,各组分用量按重量计,0.8~1.1份乙二胺基磺酸钠、10~12份甲基丙烯酸甲酯、9~10.5份丙烯酸丁酯、4~6份甲基丙烯酸十二氟庚酯、0.3~0.6份KH570、10~20份水、0.32~0.4份过硫酸铵。
进一步的,步骤2中,反应条件为在80~85℃下保温反应3~4h。
进一步的,步骤3中,聚氨酯改性聚丙烯酸酯中各组分含量,按重量计,3~4份干燥的硅氟改性丙烯酸酯共聚物、5~7份丙酮、1.5~2份聚氨酯预聚体、0.01~0.02份二月桂酸二丁基锡催化剂、0.28~0.65份乙二胺基磺酸钠。
进一步的,步骤3中,反应条件为在70~80℃下保温反应1~1.5h。
进一步的,步骤4中,防火防潮复合隔墙板中,各组分含量,按重量计,6~8份聚氨酯改性聚丙烯酸酯、1~4份聚羧酸减水剂、3.6~4.5份聚乙烯纤维、0.5~1.2份矿粉、0.8~1.3份氧化钙粉末、3~5份氢氧化镁、80~95份石膏粉、5~8份水泥、35~48份水。
进一步的,步骤4中,挤压注浆压力为0.8~1.5MPa;干燥条件为在湿度10~30%、40~50℃下干燥8~24h。
与现有技术相比,本发明所达到的有益效果是:本发明提供了一种聚氨酯改性聚丙烯酸酯,并将其与聚羧酸减水剂、聚乙烯纤维、矿粉、氧化钙粉末、氢氧化镁、石膏粉、水泥等混合,制备了力学性能优异的防火防潮复合隔墙板。其中,聚氨酯改性聚丙烯酸酯由聚氨酯与聚丙烯酸酯侧链基团反应接枝得到。在制备聚丙烯酸酯时,以甲基丙烯酸甲酯、丙烯酸丁酯、甲基丙烯酸十二氟庚酯和KH570为单体混合在水中,进行反应;加入了具有乳化效果的乙二胺基磺酸钠,提高混合乳液的稳定性;反应完全后脱去水分KH570水解产物甲醇,用丙酮将固体溶解,并加入异氰酸酯基封端的聚氨酯预聚体,通过异氰酸酯基与硅羟基反应,在聚丙烯酸酯的侧链实现接枝,形成具有交联网状结构的聚氨酯改性聚丙烯酸酯;以乙二胺基磺酸钠作为扩链剂,进一步地增加侧链接枝聚氨酯链长,并引入磺酸基,借助于磺酸根离子与水分子中的氢键缔合作用,在水泥、石膏粉、矿粉等物料组分表面形成稳定的水化膜,从而提高聚氨酯改性聚丙烯酸酯的分散性。此外,聚氨酯改性聚丙烯酸酯侧链含有氟、硅等原子,因此提高了疏水性能,得到具有防潮功能的隔墙板。
需要补充说明的,在该方案中,乙二胺基磺酸钠在两次聚合反应中分别作为乳化剂和扩链剂,在步骤3中,将乙二胺基磺酸钠用量控制在3~5%,能够使得聚氨酯预聚体充分反应,同时也避免引入过多亲水基团,从而保证复合隔墙板具有良好的防潮性能。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明实施例中所用原料及其来源:聚己内酯二元醇来自聚仁化工新材料,货号2044,相对分子量400;聚羧酸减水剂来自高创恒达,货号HD-2004;聚乙烯纤维来自Kuraray公司,长度9~10mm;矿粉来自科发建材,型号S95;氧化钙粉末来自金海化工,货号20230315;氢氧化镁来自天赐阻燃材料,粒径0.5~1.5μm;石膏粉来自临丰石膏,2000目;水泥来自钱鑫丰建材,PO 42.5级水泥。
实施例1:一种防火防潮的复合隔墙板的制备方法:
步骤1:按摩尔比1:1.15将400g聚己内酯二元醇和256g异佛尔酮二异氰酸酯混合,再加入7.8g二月桂酸二丁基锡催化剂,搅拌0.5h,加热至70℃,继续反应1h得到聚氨酯预聚体;
步骤2:在氮气环境下,将0.8kg乙二胺基磺酸钠、10.3kg甲基丙烯酸甲酯、9.6kg丙烯酸丁酯、4.4kg甲基丙烯酸十二氟庚酯、0.4kgKH570、14.5kg水混合,高速搅拌15min,并超声分散得到复合乳液;80℃水浴下滴加0.34kg过硫酸铵,控制滴加速度1.5h滴完,然后再保温反应3h,得到硅氟改性丙烯酸酯共聚物乳液;干燥脱除水和甲醇,备用;
步骤3:取3.5kg干燥的硅氟改性丙烯酸酯共聚物,用6kg丙酮溶解后,氮气环境下加入1.5kg聚氨酯预聚体、0.01kg二月桂酸二丁基锡催化剂、0.5kg乙二胺基磺酸钠,升温至70℃,保温反应1.5h,得到聚氨酯改性聚丙烯酸酯;
步骤4:将8kg聚氨酯改性聚丙烯酸酯、1kg聚羧酸减水剂、4kg聚乙烯纤维、0.9kg矿粉、1.1kg氧化钙粉末、4.7kg氢氧化镁、95kg石膏粉、8kg水泥、48kg水混合搅拌5min;在0.8MPa下挤压注浆,待浆体初凝后抽芯,终凝后拆模、翻板;在湿度10%、40℃下干燥12h,得到防火防潮复合隔墙板。
实施例2:一种防火防潮的复合隔墙板的制备方法:
步骤1:按摩尔比1:1.15将400g聚己内酯二元醇和256g异佛尔酮二异氰酸酯混合,再加入7.8g二月桂酸二丁基锡催化剂,搅拌0.5h,加热至75℃,继续反应1.5h得到聚氨酯预聚体;
步骤2:在氮气环境下,将0.8kg乙二胺基磺酸钠、10.3kg甲基丙烯酸甲酯、9.6kg丙烯酸丁酯、4.4kg甲基丙烯酸十二氟庚酯、0.4kg KH570、14.5kg水混合,高速搅拌15min,并超声分散得到复合乳液;80℃水浴下滴加0.34kg过硫酸铵,控制滴加速度1.5h滴完,然后再保温反应3.5h,得到硅氟改性丙烯酸酯共聚物乳液;干燥脱除水和甲醇,备用;
步骤3:取3.5kg干燥的硅氟改性丙烯酸酯共聚物,用6kg丙酮溶解后,氮气环境下加入1.5kg聚氨酯预聚体、0.01kg二月桂酸二丁基锡催化剂、0.5kg乙二胺基磺酸钠,升温至70℃,保温反应1.2h,得到聚氨酯改性聚丙烯酸酯;
步骤4:将8kg聚氨酯改性聚丙烯酸酯、1kg聚羧酸减水剂、4kg聚乙烯纤维、0.9kg矿粉、1.1kg氧化钙粉末、4.7kg氢氧化镁、95kg石膏粉、8kg水泥、48kg水混合搅拌5.5min;在0.85MPa下挤压注浆,待浆体初凝后抽芯,终凝后拆模、翻板;在湿度10%、40℃下干燥10h,得到防火防潮复合隔墙板。
实施例3:一种防火防潮的复合隔墙板的制备方法:
步骤1:按摩尔比1:1.15将400g聚己内酯二元醇和256g异佛尔酮二异氰酸酯混合,再加入7.8g二月桂酸二丁基锡催化剂,搅拌0.5h,加热至80℃,继续反应1h得到聚氨酯预聚体;
步骤2:在氮气环境下,将0.8kg乙二胺基磺酸钠、10.3kg甲基丙烯酸甲酯、9.6kg丙烯酸丁酯、4.4kg甲基丙烯酸十二氟庚酯、0.4kg KH570、14.5kg水混合,高速搅拌18min,并超声分散得到复合乳液;82℃水浴下滴加0.34kg过硫酸铵,控制滴加速度1.5h滴完,然后再保温反应3.5h,得到硅氟改性丙烯酸酯共聚物乳液;干燥脱除水和甲醇,备用;
步骤3:取3.5kg干燥的硅氟改性丙烯酸酯共聚物,用6kg丙酮溶解后,氮气环境下加入1.5kg聚氨酯预聚体、0.01kg二月桂酸二丁基锡催化剂、0.5kg乙二胺基磺酸钠,升温至75℃,保温反应1.2h,得到聚氨酯改性聚丙烯酸酯;
步骤4:将8kg聚氨酯改性聚丙烯酸酯、1kg聚羧酸减水剂、4kg聚乙烯纤维、0.9kg矿粉、1.1kg氧化钙粉末、4.7kg氢氧化镁、95kg石膏粉、8kg水泥、48kg水混合搅拌6.5min;在0.8MPa下挤压注浆,待浆体初凝后抽芯,终凝后拆模、翻板;在湿度15%、45℃下干燥14h,得到防火防潮复合隔墙板。
实施例4:一种防火防潮的复合隔墙板的制备方法:
步骤1:按摩尔比1:1.15将400g聚己内酯二元醇和256g异佛尔酮二异氰酸酯混合,再加入7.8g二月桂酸二丁基锡催化剂,搅拌1h,加热至70℃,继续反应1h得到聚氨酯预聚体;
步骤2:在氮气环境下,将0.8kg乙二胺基磺酸钠、10.3kg甲基丙烯酸甲酯、9.6kg丙烯酸丁酯、4.4kg甲基丙烯酸十二氟庚酯、0.4kg KH570、14.5kg水混合,高速搅拌18min,并超声分散得到复合乳液;80℃水浴下滴加0.34kg过硫酸铵,控制滴加速度1.6h滴完,然后再保温反应3.5h,得到硅氟改性丙烯酸酯共聚物乳液;干燥脱除水和甲醇,备用;
步骤3:取3.5kg干燥的硅氟改性丙烯酸酯共聚物,用6kg丙酮溶解后,氮气环境下加入1.5kg聚氨酯预聚体、0.01kg二月桂酸二丁基锡催化剂、0.5kg乙二胺基磺酸钠,升温至75℃,保温反应1h,得到聚氨酯改性聚丙烯酸酯;
步骤4:将8kg聚氨酯改性聚丙烯酸酯、1kg聚羧酸减水剂、4kg聚乙烯纤维、0.9kg矿粉、1.1kg氧化钙粉末、4.7kg氢氧化镁、95kg石膏粉、8kg水泥、48kg水混合搅拌5~10min;在1MPa下挤压注浆,待浆体初凝后抽芯,终凝后拆模、翻板;在湿度20%、45℃下干燥13h,得到防火防潮复合隔墙板。
实施例5:一种防火防潮的复合隔墙板的制备方法:
步骤1:按摩尔比1:1.15将400g聚己内酯二元醇和256g异佛尔酮二异氰酸酯混合,再加入7.8g二月桂酸二丁基锡催化剂,搅拌1h,加热至80℃,继续反应1h得到聚氨酯预聚体;
步骤2:在氮气环境下,将0.8kg乙二胺基磺酸钠、10.3kg甲基丙烯酸甲酯、9.6kg丙烯酸丁酯、4.4kg甲基丙烯酸十二氟庚酯、0.4kg KH570、14.5kg水混合,高速搅拌20min,并超声分散得到复合乳液;85℃水浴下滴加0.34kg过硫酸铵,控制滴加速度2h滴完,然后再保温反应3h,得到硅氟改性丙烯酸酯共聚物乳液;干燥脱除水和甲醇,备用;
步骤3:取3.5kg干燥的硅氟改性丙烯酸酯共聚物,用6kg丙酮溶解后,氮气环境下加入1.5kg聚氨酯预聚体、0.01kg二月桂酸二丁基锡催化剂、0.5kg乙二胺基磺酸钠,升温至78℃,保温反应1.5h,得到聚氨酯改性聚丙烯酸酯;
步骤4:将8kg聚氨酯改性聚丙烯酸酯、1kg聚羧酸减水剂、4kg聚乙烯纤维、0.9kg矿粉、1.1kg氧化钙粉末、4.7kg氢氧化镁、95kg石膏粉、8kg水泥、48kg水混合搅拌8.5min;在1.2MPa下挤压注浆,待浆体初凝后抽芯,终凝后拆模、翻板;在湿度25%、50℃下干燥20h,得到防火防潮复合隔墙板。
实施例6:一种防火防潮的复合隔墙板的制备方法:
步骤1:按摩尔比1:1.15将400g聚己内酯二元醇和256g异佛尔酮二异氰酸酯混合,再加入7.8g二月桂酸二丁基锡催化剂,搅拌0.5h,加热至80℃,继续反应1h得到聚氨酯预聚体;
步骤2:在氮气环境下,将0.8kg乙二胺基磺酸钠、10.3kg甲基丙烯酸甲酯、9.6kg丙烯酸丁酯、4.4kg甲基丙烯酸十二氟庚酯、0.4kg KH570、14.5kg水混合,高速搅拌15~20min,并超声分散得到复合乳液;85℃水浴下滴加0.34kg过硫酸铵,控制滴加速度1.5h滴完,然后再保温反应3h,得到硅氟改性丙烯酸酯共聚物乳液;干燥脱除水和甲醇,备用;
步骤3:取3.5kg干燥的硅氟改性丙烯酸酯共聚物,用6kg丙酮溶解后,氮气环境下加入1.5kg聚氨酯预聚体、0.01kg二月桂酸二丁基锡催化剂、0.5kg乙二胺基磺酸钠,升温至70℃,保温反应1.5h,得到聚氨酯改性聚丙烯酸酯;
步骤4:将8kg聚氨酯改性聚丙烯酸酯、1kg聚羧酸减水剂、4kg聚乙烯纤维、0.9kg矿粉、1.1kg氧化钙粉末、4.7kg氢氧化镁、95kg石膏粉、8kg水泥、48kg水混合搅拌10min;在1.5MPa下挤压注浆,待浆体初凝后抽芯,终凝后拆模、翻板;在湿度30%、50℃下干燥24h,得到防火防潮复合隔墙板。
对比例1:不加入聚氨酯改性聚丙烯酸酯制备隔墙板,其余参数与实施例1相同。
将1kg聚羧酸减水剂、4kg聚乙烯纤维、0.9kg矿粉、1.1kg氧化钙粉末、4.7kg氢氧化镁、95kg石膏粉、8kg水泥、48kg水混合搅拌5min;在0.8MPa下挤压注浆,待浆体初凝后抽芯,终凝后拆模、翻板;在湿度10%、40℃下干燥12h,得到防火防潮复合隔墙板。
对比例2:使用十二烷基磺酸钠代替乙二胺基磺酸钠,同时使用1,4-丁二醇作为扩链剂,其余参数与实施例2相同。
步骤1:按摩尔比1:1.15将400g聚己内酯二元醇和256g异佛尔酮二异氰酸酯混合,再加入7.8g二月桂酸二丁基锡催化剂,搅拌0.5h,加热至75℃,继续反应1.5h得到聚氨酯预聚体;
步骤2:在氮气环境下,将0.8kg十二烷基磺酸钠、10.3kg甲基丙烯酸甲酯、9.6kg丙烯酸丁酯、4.4kg甲基丙烯酸十二氟庚酯、0.4kg KH570、14.5kg水混合,高速搅拌15min,并超声分散得到复合乳液;80℃水浴下滴加0.34kg过硫酸铵,控制滴加速度1.5h滴完,然后再保温反应3.5h,得到硅氟改性丙烯酸酯共聚物乳液;干燥脱除水和甲醇,备用;
步骤3:取3.5kg干燥的硅氟改性丙烯酸酯共聚物,用6kg丙酮溶解后,氮气环境下加入1.5kg聚氨酯预聚体、0.01kg二月桂酸二丁基锡催化剂、0.5kg 1,4-丁二醇,升温至70℃,保温反应1.2h,得到聚氨酯改性聚丙烯酸酯;
步骤4:将8kg聚氨酯改性聚丙烯酸酯、1kg聚羧酸减水剂、4kg聚乙烯纤维、0.9kg矿粉、1.1kg氧化钙粉末、4.7kg氢氧化镁、95kg石膏粉、8kg水泥、48kg水混合搅拌5.5min;在0.85MPa下挤压注浆,待浆体初凝后抽芯,终凝后拆模、翻板;在湿度10%、40℃下干燥10h,得到防火防潮复合隔墙板。
对比例3:将步骤2中的水替换为丙酮,其余参数与实施例3相同。
步骤1:按摩尔比1:1.15将400g聚己内酯二元醇和256g异佛尔酮二异氰酸酯混合,再加入7.8g二月桂酸二丁基锡催化剂,搅拌0.5h,加热至80℃,继续反应1h得到聚氨酯预聚体;
步骤2:在氮气环境下,将0.8kg乙二胺基磺酸钠、10.3kg甲基丙烯酸甲酯、9.6kg丙烯酸丁酯、4.4kg甲基丙烯酸十二氟庚酯、0.4kg KH570、14.5kg丙酮,高速搅拌18min,并超声分散得到复合乳液;82℃水浴下滴加0.34kg过硫酸铵,控制滴加速度1.5h滴完,然后再保温反应3.5h,得到硅氟改性丙烯酸酯共聚物,干燥脱除水和甲醇,备用;
步骤3:取3.5kg干燥的硅氟改性丙烯酸酯共聚物,用6kg丙酮溶解后,氮气环境下加入1.5kg聚氨酯预聚体、0.01kg二月桂酸二丁基锡催化剂、0.5kg乙二胺基磺酸钠,升温至75℃,保温反应1.2h,得到聚氨酯改性聚丙烯酸酯;
步骤4:将8kg聚氨酯改性聚丙烯酸酯、1kg聚羧酸减水剂、4kg聚乙烯纤维、0.9kg矿粉、1.1kg氧化钙粉末、4.7kg氢氧化镁、95kg石膏粉、8kg水泥、48kg水混合搅拌6.5min;在0.8MPa下挤压注浆,待浆体初凝后抽芯,终凝后拆模、翻板;在湿度15%、45℃下干燥14h,得到防火防潮复合隔墙板。
实验:将实施例1~6和对比例1~3中的隔墙板制成尺寸为1m×0.6m×0.1m的试样进行性能测试,抗压强度和耐火极限的方法与标准参考GB/T23450-2009《建筑隔墙用保温条板》;同时测试饱和吸水率,饱和吸水率的测试方法为:取将隔墙板切割成尺寸为0.1×0.1×0.1m的立方体,称重记为m0,浸泡在水中24h,擦去表面的水分,称重记为m1,饱和吸水率=(m1-m0)/m0×100%;实验结果如下表所示。
项目 | 抗压强度/MPa | 耐火极限/h | 饱和吸水率/% |
实施例1 | 20.4 | 7.0 | 4.2 |
实施例2 | 20.3 | 6.9 | 4.1 |
实施例3 | 20.1 | 7.1 | 4.3 |
实施例4 | 20.9 | 6.8 | 4.6 |
实施例5 | 20.2 | 7.1 | 4.7 |
实施例6 | 20.3 | 7.2 | 4.4 |
对比例1 | 18.4 | 5.3 | 13.9 |
对比例2 | 18.5 | / | / |
对比例3 | 18.7 | / | 8.4 |
结论:实施例1~6数据表明,本发明制备的复合隔墙板具有良好的防火效果和力学强度,其耐火极限达到6.5h以上,抗压强度达到了20MPa以上,同时本发明制备的隔墙板具有良好的抗水性能,吸水率更低,有效克服了常规石膏隔墙板不防潮和耐水性能差的问题。对比例1中,不加入聚氨酯改性聚丙烯酸酯制备的复合隔墙板,其抗压强度、耐火极限和饱均不如实施例1,同时饱和吸水率更高,防潮性能不佳;对比例2中,聚氨酯预聚体侧链未引入磺酸基团,因此得到的聚氨酯改性聚丙烯酸酯与水泥、石膏粉等组分的粘附性能下降,导致隔墙板的力学强度下降;对比例3中,由于反应体系在丙酮中,KH570无法发生水解产生硅羟基,聚氨酯预聚体难以接枝到聚丙烯酸酯侧链,无法通过化学键形成交联,因此二者只能通过物理方式进行交联;由于聚氨酯改性聚丙烯酸酯含有硅、氟等原子,具有较大的空间位阻,影响二者的交联效果;同时,聚氨酯也会影响聚丙烯酸酯中硅、氟原子向表面迁移,因此疏水性能也受到影响,因此最终制得的复合隔墙板力学强度和防潮效果不如实施例3。
最后应说明的是:以上所述仅为本发明的优选实施例而已,并不用于限制本发明,尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (10)
1.一种防火防潮的复合隔墙板的制备方法,其特征在于:包括以下步骤:
步骤1:聚己内酯二元醇和异佛尔酮二异氰酸酯混合,再加入二月桂酸二丁基锡催化剂,搅拌加热反应,得到聚氨酯预聚体;
步骤2:在氮气环境下,将乙二胺基磺酸钠、甲基丙烯酸甲酯、丙烯酸丁酯、甲基丙烯酸十二氟庚酯、KH570、水混合,搅拌并超声分散,随后加入过硫酸铵,然后升温反应,得到硅氟改性丙烯酸酯共聚物乳液;干燥脱除水和甲醇,备用;
步骤3:取干燥的硅氟改性丙烯酸酯共聚物,用丙酮溶解后,氮气环境下加入聚氨酯预聚体、二月桂酸二丁基锡催化剂和乙二胺基磺酸钠,升温后保温反应,得到聚氨酯改性聚丙烯酸酯;
步骤4:将聚氨酯改性聚丙烯酸酯、聚羧酸减水剂、聚乙烯纤维、矿粉、氧化钙粉末、氢氧化镁、石膏粉、水泥、水混合搅拌后,挤压注浆;待浆体初凝后抽芯,终凝后拆模、翻板、干燥得到防火防潮复合隔墙板。
2.根据权利要求1所述的一种防火防潮的复合隔墙板的制备方法,其特征在于:步骤1中,聚己内酯二元醇和异佛尔酮二异氰酸酯的摩尔比为1:1.15~1.3。
3.根据权利要求1所述的一种防火防潮的复合隔墙板的制备方法,其特征在于:步骤1中,聚己内酯二元醇和异佛尔酮二异氰酸酯的反应温度为70~80℃,反应时间为1~2h。
4.根据权利要求1所述的一种防火防潮的复合隔墙板的制备方法,其特征在于:步骤2中,硅氟改性丙烯酸酯共聚物乳液的具体制备方法为:在氮气环境下,将乙二胺基磺酸钠、甲基丙烯酸甲酯、丙烯酸丁酯、甲基丙烯酸十二氟庚酯、KH570、水混合,搅拌15~20min,超声分散,加入过硫酸铵,控制滴加速度1.5~2h,在80~85℃下保温反应3~4h。
5.根据权利要求1所述的一种防火防潮的复合隔墙板的制备方法,其特征在于:步骤3中,聚氨酯改性聚丙烯酸酯中各组分含量,按重量计,3~4份干燥的硅氟改性丙烯酸酯共聚物、5~7份丙酮、1.5~2份聚氨酯预聚体、0.01~0.02份二月桂酸二丁基锡催化剂、0.28~0.65份乙二胺基磺酸钠。
6.根据权利要求1所述的一种防火防潮的复合隔墙板的制备方法,其特征在于:步骤3中,反应条件为在70~80℃下保温反应1~1.5h。
7.根据权利要求1所述的一种防火防潮的复合隔墙板的制备方法,其特征在于:步骤4中,防火防潮复合隔墙板中,各组分含量,按重量计,6~8份聚氨酯改性聚丙烯酸酯、1~4份聚羧酸减水剂、3.6~4.5份聚乙烯纤维、0.5~1.2份矿粉、0.8~1.3份氧化钙粉末、3~5份氢氧化镁、80~95份石膏粉、5~8份水泥、35~48份水。
8.根据权利要求1所述的一种防火防潮的复合隔墙板的制备方法,其特征在于:步骤4中,挤压注浆压力为0.8~1.5MPa。
9.根据权利要求1所述的一种防火防潮的复合隔墙板的制备方法,其特征在于:步骤4中,干燥条件为在湿度10~30%、40~50℃下干燥8~24h。
10.根据权利要求1~9中任一项所述的一种防火防潮的复合隔墙板的制备方法制备得到的复合隔墙板。
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