CN104693938A - 一种改良聚丙烯酸酯防火钢结构 - Google Patents

一种改良聚丙烯酸酯防火钢结构 Download PDF

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CN104693938A
CN104693938A CN201310657514.XA CN201310657514A CN104693938A CN 104693938 A CN104693938 A CN 104693938A CN 201310657514 A CN201310657514 A CN 201310657514A CN 104693938 A CN104693938 A CN 104693938A
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马文超
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Qingdao Pingdu City Old Shop Gold Mine
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Abstract

本发明公开了一种改良聚丙烯酸酯防火钢结构制备方法。其技术方案是：在普通碳素结构钢材喷涂3mm改良聚丙烯酸酯防火涂料，构成本发明改良聚丙烯酸酯防火钢结构。改良聚丙烯酸酯防火涂料的配方：改良聚丙烯酸酯乳液40%+聚磷酸铵18%+三聚氰胺5%+季戊四醇9%+滑石粉3%+无机硅3%+水22%。本发明的特点：通过优化基料的物理性能，使聚丙烯酸酯玻璃化转变温度、相对分子质量、乳胶粒径与炭化层结构与产品的防火性能得到有机协调，显著提高聚丙烯酸酯防火钢材料的耐火极限。

Description

一种改良聚丙烯酸酯防火钢结构
技术领域
本发明公开了一种改良聚丙烯酸酯防火钢结构的制备方法。
背景技术
随着钢材料在建筑业的蓬勃发展，由于钢结构防火性能导致的安全事故也不乏报道，防火材料的研制如火如荼，以树脂作为基料的一种防护涂料得到广泛使用。但是，基料树脂是防火涂料中的主要成膜物质,要求其能与涂料的其他组分匹配,它对涂层的物理化学性质起到了决定作用,对炭化层的结构和性能也都有着重要的影响。
为了克服上述问题，本发明设计一种改良聚丙烯酸酯防火钢结构，通过优化基料的物理性能，使聚丙烯酸酯玻璃化转变温度、相对分子质量、乳胶粒径与炭化层结构与产品的防火性能得到有机协调，显著提高聚丙烯酸酯防火钢材料的耐火极限。
发明内容
本发明的目的就是针对现有技术存在的缺陷，一种改良聚丙烯酸酯防火钢结构。
其技术方案是改良聚丙烯酸酯防火钢结构，其特征是在普通碳素结构钢材喷涂3mm改良聚丙烯酸酯防火涂料，构成本发明改良聚丙烯酸酯防火钢结构。改良聚丙烯酸酯防火涂料的配方：改良聚丙烯酸酯乳液40%+聚磷酸铵18%+三聚氰胺5%+季戊四醇9%+滑石粉3%+无机硅3%+水22%。
改良聚丙烯酸酯乳液配方：不同软硬单体组成的丙烯酸酯乳液90%+阴离子乳化（FS-345）4.7%+反应乳化剂（UCAN-1）5%+引发剂过硫酸铵0.3%。不同软硬单体组成的丙烯酸酯乳液配方为：甲基丙烯酸甲酯49%+丙烯酸丁酯49%+丙烯酸2%。
采用预乳化单体滴加法聚丙烯酸酯乳液的合成：先将单体、部分乳化剂和水在室温下经30 min预乳化制得乳液，倒出放置在一边待用。将一定量的水升温至65 ℃，一次性加入阴离子乳化剂FS-345和反应乳化剂UCAN-1的水溶液作为“底料”，继续升温至80 ℃时，加入0.3%引发剂过硫酸铵，然后继续升温至84 ℃，同时滴加先前制得的预乳化液和引发剂水溶液，在3 h内滴完。滴完后，保温1 h，降温到50 ℃时，用氨水调节乳液的pH值为7~8，最后降温到室温后，出料。
基质树脂的理化性质：玻璃化转变温度16±2℃，相对分子质量68000±200，乳胶粒粒径0.160±0.002/μm。
上述原料经过高速搅拌、三辊研磨、高速搅拌3道工序后，倒入容器中。将制得的涂料均匀涂刷于钢板并45°倾斜放置，涂刷10次左右达到所要求的厚( 1.5~2 mm) 。
本发明的特点是：通过改良聚丙烯酸酯的物理性质，更好适应于防火材料的性能，提高耐火极限。聚丙烯酸酯16℃的低玻璃化转变温度使防火涂料的炭化层的泡孔结构变得细密，整体强度变强。炭化层内部泡孔的平均面积越小，数量越多则整体炭化层的总热阻就越大。涂刷的钢板性能下降就越慢，防火涂料的防火性能也越好。基料适中的相对分子质量68000可以具有才有比较高的膨胀倍率。而在一定的膨胀倍率范围内，膨胀倍率越大，耐火性能越好。还可以提高基料树脂高温时的流动性能，有利于防火涂料涂层的整个发泡过程，最终将对涂料炭化层的泡孔结构以及防火性能产生影响。本涂料的乳胶粒径小，其渗透性越好，可降低成膜温度，提高涂膜的光泽和机械强度。
具体实施方式
一种改良聚丙烯酸酯防火钢结构，其特征是在普通碳素结构钢材喷涂3mm改良聚丙烯酸酯防火涂料，构成本发明改良聚丙烯酸酯防火钢结构。改良聚丙烯酸酯防火涂料的配方：改良聚丙烯酸酯乳液40%+聚磷酸铵18%+三聚氰胺5%+季戊四醇9%+滑石粉3%+无机硅3%+水22%。
改良聚丙烯酸酯乳液配方：不同软硬单体组成的丙烯酸酯乳液90%+阴离子乳化（FS-345）4.7%+反应乳化剂（UCAN-1）5%+引发剂过硫酸铵0.3%。不同软硬单体组成的丙烯酸酯乳液配方为：甲基丙烯酸甲酯49%+丙烯酸丁酯49%+丙烯酸2%。
采用预乳化单体滴加法聚丙烯酸酯乳液的合成：先将单体、部分乳化剂和水在室温下经30 min预乳化制得乳液，倒出放置在一边待用。将一定量的水升温至65 ℃，一次性加入阴离子乳化剂FS-345和反应乳化剂UCAN-1的水溶液作为“底料”，继续升温至80 ℃时，加入0.3%引发剂过硫酸铵，然后继续升温至84 ℃，同时滴加先前制得的预乳化液和引发剂水溶液，在3 h内滴完。滴完后，保温1 h，降温到50 ℃时，用氨水调节乳液的pH值为7~8，最后降温到室温后，出料。
基质树脂的理化性质：玻璃化转变温度16±2℃，相对分子质量68000±200，乳胶粒粒径0.160±0.002/μm。
上述原料经过高速搅拌、三辊研磨、高速搅拌3道工序后，倒入容器中。将制得的涂料均匀涂刷于钢板并45°倾斜放置，涂刷10次左右达到所要求的厚( 1.5~2 mm) 。
这样得到本发明的一种改良聚丙烯酸酯防火钢结构。

Claims (7)

1.一种改良聚丙烯酸酯防火钢结构，其特征是在普通碳素结构钢材喷涂3mm改良聚丙烯酸酯防火涂料，构成本发明改良聚丙烯酸酯防火钢结构。
2.根据权利要求1所述的一种改良聚丙烯酸酯防火钢结构，其特征是：改良聚丙烯酸酯防火涂料的配方：改良聚丙烯酸酯乳液40%+聚磷酸铵18%+三聚氰胺5%+季戊四醇9%+滑石粉3%+无机硅3%+水22%。
3.根据权利要求2所述的一种改良聚丙烯酸酯防火钢结构，其特征是：改良聚丙烯酸酯乳液配方：不同软硬单体组成的丙烯酸酯乳液90%+阴离子乳化（FS-345）4.7%+反应乳化剂（UCAN-1）5%+引发剂过硫酸铵0.3%。
4.根据权利要求3所述的一种改良聚丙烯酸酯防火钢结构，其特征是：不同软硬单体组成的丙烯酸酯乳液配方为：甲基丙烯酸甲酯49%+丙烯酸丁酯49%+丙烯酸2%。
5.根据权利要求1所述的一种改良聚丙烯酸酯防火钢结构，其特征是：采用预乳化单体滴加法聚丙烯酸酯乳液的合成：先将单体、部分乳化剂和水在室温下经30 min预乳化制得乳液，倒出放置在一边待用，将一定量的水升温至65 ℃，一次性加入阴离子乳化剂FS-345和反应乳化剂UCAN-1的水溶液作为“底料”，继续升温至80 ℃时，加入0.3%引发剂过硫酸铵，然后继续升温至84 ℃，同时滴加先前制得的预乳化液和引发剂水溶液，在3 h内滴完，滴完后，保温1 h，降温到50 ℃时，用氨水调节乳液的pH值为7~8，最后降温到室温后，出料。
6.根据权利要求2所述的一种改良聚丙烯酸酯防火钢结构，其特征是：改良种改良聚丙烯酸酯乳液的理化性质：玻璃化转变温度16±2℃，相对分子质量68000±200，乳胶粒粒径0.160±0.002/μm。
7.根据权利要求1所述的一种改良聚丙烯酸酯防火钢结构，其特征是：上述原料经过高速搅拌、三辊研磨、高速搅拌3道工序后，倒入容器中，将制得的涂料均匀涂刷于钢板并45°倾斜放置，涂刷10次左右达到所要求的厚( 1.5~2 mm)。
CN201310657514.XA 2013-12-09 2013-12-09 一种改良聚丙烯酸酯防火钢结构 Pending CN104693938A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105038466A (zh) * 2015-06-30 2015-11-11 沈阳工业大学辽阳校区 一种钢结构水性防火涂料及其制备方法
CN109251615A (zh) * 2018-08-29 2019-01-22 重庆七彩虹新材料技术有限公司 一种水性丙烯酸阻燃涂料、制备方法以及施工工艺

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105038466A (zh) * 2015-06-30 2015-11-11 沈阳工业大学辽阳校区 一种钢结构水性防火涂料及其制备方法
CN109251615A (zh) * 2018-08-29 2019-01-22 重庆七彩虹新材料技术有限公司 一种水性丙烯酸阻燃涂料、制备方法以及施工工艺

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Application publication date: 20150610