CN111592733B - 一种抗老化保温板 - Google Patents

一种抗老化保温板 Download PDF

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CN111592733B
CN111592733B CN202010471803.0A CN202010471803A CN111592733B CN 111592733 B CN111592733 B CN 111592733B CN 202010471803 A CN202010471803 A CN 202010471803A CN 111592733 B CN111592733 B CN 111592733B
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祝春夏
肖杰
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Anhui Bayway New Materials Co ltd
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Abstract

本发明公开了一种抗老化保温板，包括以下重量份的原料：改性酚醛树脂100‑120份、滑石粉10‑15份、氢氧化铝20‑30份、聚醋酸乙烯酯乳液15‑20份、聚丙烯纤维7‑10份、羧甲基纤维素钠5‑8.5份、发泡剂6‑10份、表面活性剂6‑9份；以改性酚醛树脂为基体，采用抗老化改性剂对酚醛树脂进行改性，得到了改性酚醛树脂，醚化降低了酚醛树脂的酸性，提高了酚醛树脂的韧性，从而改性酚醛树脂与其余组分经混合、发泡、浇注成型后制备得到了高强度的保温板；另外，酚醛树脂上以化学键的方式连接了三嗪抗紫外官能结构，可长久的维持酚醛树脂的抗紫外性能，进而维持保温板的抗老化性能。

Description

一种抗老化保温板
技术领域
本发明属于保温材料技术领域，具体涉及一种抗老化保温板。
背景技术
保温板是隔离室内环境与外部环境的一种常用材料，保温板使用时往往在其外部涂覆有砂浆，起到防护作用，但砂浆吸水性能较好，导致雨水容易浸润至保温板处，现有的保温板强度一般、防水效果不够好，雨水浸润后吸水，容易导致寿命降低，影响建筑墙体的安全性能。
酚醛保温板属于有机类热固性高效保温材料，尤其近年建筑节能率的逐渐提高，应用保温材料技术性能越来越高，市场需求量越来越大。在建筑应用保温材料应用中，不但要求物理技术性能高，而且必须达到防火性能。酚醛树脂生产的酚醛保温板，具有良好的耐火燃穿透、耐高温、低烟性能，但酚醛保温板最大的缺点是脆性大、酸性大。由于酚醛保温板的脆性大，酚醛保温板在使用时存在掉粉、弹性低、压缩强度低，导热系数不达标等问题，固有优异防火性能没能得到很好利用，因此，影响该产品应用技术的扩展，同时给运输、施工带来很多不便。由于酸性大，使得酚醛保温板与金属、水泥基材料接触会有一定腐蚀性，限制了其应用范围；另外，保温板用于外部环境时，其长时间受到风吹日晒，保温板易老化，进而产生褪色、粉化。
发明内容
本发明的目的在于提供一种抗老化保温板。
本发明的目的可以通过以下技术方案实现：
一种抗老化保温板，包括以下重量份的原料：改性酚醛树脂100-120份、滑石粉10-15份、氢氧化铝20-30份、聚醋酸乙烯酯乳液15-20份、聚丙烯纤维7-10份、羧甲基纤维素钠5-8.5份、发泡剂6-10份、表面活性剂6-9份。
所述的改性酚醛树脂的制备方法为：
反应流程如下：
Figure BDA0002514512140000021
S1、抗老化改性剂的制备
称取100mmol三聚氯氰、催化剂和500ml溶剂二甲苯，边搅拌边加入200-210mmol5-甲氧基间苯二酚，加热升温至90-95℃，保温反应3-5h，加入500ml去离子水，采用旋转蒸发仪出去溶剂，得到的固体经水洗后即得到式B1所示的抗老化改性剂；
S2、改性酚醛树脂的制备
称取10.5-12g抗老化改性剂A1、100-115g固体酚醛树脂粉末和1.5-2L溶剂叔戊醇加入到反应釜中，搅拌溶解完全后，加入碱催化剂，加入完毕后，边搅拌边升温至90-95℃，保温反应3.5-5h，反应结束后，自然冷却到室温，抽滤，采用水洗后，烘干后即得到式B所示的改性酚醛树脂。
进一步，步骤S1中，所述的催化剂为AlCl3，催化剂的加入量为105-110mmol。
进一步，步骤S2中，所述的碱催化剂为碳酸钾，碱催化剂的加入量为5-7g。
进一步，所述的发泡剂为正己烷。
进一步，所述的表面活性剂为十二烷基苯磺酸钠、十二烷基磺酸钠、羟丙基甲基纤维素醚中的一种。
进一步，该抗老化保温板的制备方法为：将改性酚醛树脂、滑石粉、氢氧化铝、聚醋酸乙烯酯乳液、聚丙烯纤维、羧甲基纤维素钠加入混料桶中进行预混，接着将预混物投入到搅拌器中，接着加入发泡剂和表面活性剂，搅拌混合均匀后，升温至65-75℃，保温搅拌15-20min，接着浇注成型，即得到抗老化保温板。
本发明的有益效果：
本发明提供了一种抗老化保温板，以改性酚醛树脂为基体，采用抗老化改性剂对酚醛树脂进行改性，具体为：首先，以三聚氯氰和5-甲氧基间苯二酚为原料，在AlCl3的催化下，发生傅克反应，得到了式B1所示的抗老化改性剂，接着在碱催化剂碳酸钾的催化下，抗老化改性剂与酚醛树脂发生醚化反应，即得到了改性酚醛树脂，醚化降低了酚醛树脂的酸性，提高了酚醛树脂的韧性，从而改性酚醛树脂与其余组分经混合、发泡、浇注成型后制备得到了高强度的保温板；另外，酚醛树脂上以化学键的方式连接了三嗪抗紫外官能结构，可长久的维持酚醛树脂的抗紫外性能，进而维持保温板的抗老化性能。
当然，实施本发明的任一产品并不一定需要同时达到以上所述的所有优点。
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作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
实施例1
改性酚醛树脂的制备方法为：
反应流程如下：
Figure BDA0002514512140000041
S1、抗老化改性剂的制备
称取100mmol三聚氯氰、105mmolAlCl3和500ml溶剂二甲苯，边搅拌边加入205mmol5-甲氧基间苯二酚，加热升温至90℃，保温反应3h，加入500ml去离子水，采用旋转蒸发仪出去溶剂，得到的固体经水洗后即得到式B所示的抗老化改性剂，收率为89.4％；
S2、改性酚醛树脂的制备
称取11g抗老化改性剂A1、110g固体酚醛树脂粉末和2L溶剂叔戊醇加入到反应釜中，搅拌溶解完全后，加入6g碱催化剂碳酸钾，加入完毕后，边搅拌边升温至90℃，保温反应4h，反应结束后，自然冷却到室温，抽滤，采用水洗后，烘干后即得到式B所示的改性酚醛树脂。
改性酚醛树脂的红外表征为：IR(KBr):
Figure BDA0002514512140000051
(-OH),3046/3022(苯环)，2956-2783(-CH2-、-CH3),1523(三嗪环)cm-1。
实施例2
一种抗老化保温板，包括以下重量份的原料：改性酚醛树脂100份、滑石粉12份、氢氧化铝25份、聚醋酸乙烯酯乳液15份、聚丙烯纤维8份、羧甲基纤维素钠6份、发泡剂6份、表面活性剂7份；
所述的发泡剂为正己烷；
所述的表面活性剂为十二烷基苯磺酸钠；
该抗老化保温板的制备方法为：将改性酚醛树脂、滑石粉、氢氧化铝、聚醋酸乙烯酯乳液、聚丙烯纤维、羧甲基纤维素钠加入混料桶中进行预混，接着将预混物投入到搅拌器中，接着加入发泡剂和表面活性剂，搅拌混合均匀后，升温至65℃，保温搅拌15min，接着浇注成型，即得到抗老化保温板。
实施例3
一种抗老化保温板，包括以下重量份的原料：改性酚醛树脂110份、滑石粉15份、氢氧化铝25份、聚醋酸乙烯酯乳液16份、聚丙烯纤维10份、羧甲基纤维素钠8.5份、发泡剂10份、表面活性剂6份；
所述的发泡剂为正己烷；
所述的表面活性剂为十二烷基磺酸钠；
该抗老化保温板的制备方法为：将改性酚醛树脂、滑石粉、氢氧化铝、聚醋酸乙烯酯乳液、聚丙烯纤维、羧甲基纤维素钠加入混料桶中进行预混，接着将预混物投入到搅拌器中，接着加入发泡剂和表面活性剂，搅拌混合均匀后，升温至70℃，保温搅拌20min，接着浇注成型，即得到抗老化保温板。
实施例4
一种抗老化保温板，包括以下重量份的原料：改性酚醛树脂120份、滑石粉15份、氢氧化铝30份、聚醋酸乙烯酯乳液20份、聚丙烯纤维9份、羧甲基纤维素钠5份、发泡剂9份、表面活性剂8份；
所述的发泡剂为正己烷；
所述的表面活性剂为羟丙基甲基纤维素醚；
该抗老化保温板的制备方法为：将改性酚醛树脂、滑石粉、氢氧化铝、聚醋酸乙烯酯乳液、聚丙烯纤维、羧甲基纤维素钠加入混料桶中进行预混，接着将预混物投入到搅拌器中，接着加入发泡剂和表面活性剂，搅拌混合均匀后，升温至75℃，保温搅拌18min，接着浇注成型，即得到抗老化保温板。
对比例1
将改性酚醛树脂替换为酚醛树脂，其余同实施例4.
对制备的抗老化保温板进行耐紫外抗老化测试
Figure BDA0002514512140000061
以上内容仅仅是对本发明的构思所作的举例和说明，所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，只要不偏离发明的构思或者超越本权利要求书所定义的范围，均应属于本发明的保护范围。

Claims (6)

1.一种抗老化保温板，其特征在于：包括以下重量份的原料：改性酚醛树脂100-120份、滑石粉10-15份、氢氧化铝20-30份、聚醋酸乙烯酯乳液15-20份、聚丙烯纤维7-10份、羧甲基纤维素钠5-8.5份、发泡剂6-10份、表面活性剂6-9份；
所述的改性酚醛树脂的制备方法为：
反应流程如下：
Figure FDA0003826590130000011
S1、抗老化改性剂的制备
称取100mmol三聚氯氰、催化剂和500ml溶剂二甲苯，边搅拌边加入200-210mmol 5-甲氧基间苯二酚，加热升温至90-95℃，保温反应3-5h，加入500ml去离子水，采用旋转蒸发仪除去溶剂，得到的固体经水洗后即得到式B1所示的抗老化改性剂；
S2、改性酚醛树脂的制备
称取10.5-12g抗老化改性剂B1、100-115g固体酚醛树脂粉末和1.5-2L溶剂叔戊醇加入到反应釜中，搅拌溶解完全后，加入碱催化剂，加入完毕后，边搅拌边升温至90-95℃，保温反应3.5-5h，反应结束后，自然冷却到室温，抽滤，采用水洗后，烘干后即得到式B所示的改性酚醛树脂。
2.根据权利要求1所述的一种抗老化保温板，其特征在于：步骤S1中，所述的催化剂为AlCl3，催化剂的加入量为105-110mmol。
3.根据权利要求2所述的一种抗老化保温板，其特征在于：步骤S2中，所述的碱催化剂为碳酸钾，碱催化剂的加入量为5-7g。
4.根据权利要求1所述的一种抗老化保温板，其特征在于：所述的发泡剂为正己烷。
5.根据权利要求1所述的一种抗老化保温板，其特征在于：所述的表面活性剂为十二烷基苯磺酸钠、十二烷基磺酸钠、羟丙基甲基纤维素醚中的一种。
6.根据权利要求1所述的一种抗老化保温板，其特征在于：该抗老化保温板的制备方法为：将改性酚醛树脂、滑石粉、氢氧化铝、聚醋酸乙烯酯乳液、聚丙烯纤维、羧甲基纤维素钠加入混料桶中进行预混，接着将预混物投入到搅拌器中，接着加入发泡剂和表面活性剂，搅拌混合均匀后，升温至65-75℃，保温搅拌15-20min，接着浇注成型，即得到抗老化保温板。
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