CN106243916A - 一种阻燃门用阻燃双组份环氧树脂涂料及其应用 - Google Patents
一种阻燃门用阻燃双组份环氧树脂涂料及其应用 Download PDFInfo
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Abstract
本发明涉及一种耐热效果和持续阻燃效果优异的双组份环氧树脂涂料，其可以用于阻燃门的制作过程中。具体技术方案为：涂料由A、B两组分组成，A组分与B组分的质量比为1‑3:1；A组分包含如下组分：环氧树脂100重量份，有机硅树脂20‑40重量份，阻燃填料50‑200重量份，抗氧剂2‑5重量份，增韧剂1‑8重量份，稀释剂30‑200重量份；B组分包括如下组分：2‑(6‑氧杂‑6H‑二苯‑l，2‑氧磷_6一烷基)一酚甲醛线性酚醛树脂10‑20重量份，阻燃剂12‑18重量份。通过含磷环氧树脂、有机硅树脂、阻燃填料、增韧剂、固化剂中相互配合，满足了上述要求，取得了优异的技术效果。
Description
技术领域
本发明涉及一种双组份环氧树脂涂料，具体涉及一种阻燃门用阻燃双组份环氧树脂涂料。
背景技术
环氧树脂具有优异的性能，其在机械性能、绝缘性能、耐化学药品、粘接性能表现优异，其广泛应用在涂料、浇注料、胶黏剂、层压材料中。但普通的环氧树脂存在氧指数低的问题，其易燃和自然限制了其应用，难以满足其在高温、阻燃领域的使用。
为了克服上述问题，现有技术中通过多种方式对环氧树脂进行改性，最常用的是使用阻燃剂，主要涉及添加型和反应型，大幅度提高了阻燃性能；对环氧树脂结构的改性也是现有技术中常用的技术手段。但环氧树脂在使用过程中，持续阻燃的性能还有待提高。阻燃门是现有建筑中重要的结构，其表层涂料对初期阻燃产生了重要作用，故具有优异耐热、持续阻燃效果的阻燃涂料是现有技术急需的。
发明内容
发明目的：为了解决现有技术中上述问题，本发明提供了一种耐热效果和持续阻燃效果优异的双组份环氧树脂涂料，其可以用于阻燃门的制作过程中，其具体通过含磷环氧树脂、有机硅树脂、阻燃填料、增韧剂、固化剂中相互配合，满足了上述要求，取得了优异的技术效果。
解决上述技术问题的技术方案为：
阻燃门用阻燃双组份环氧树脂涂料，由A、B两组分组成，A组分与B组分的质量比为1-3:1；
A组分包含如下组分：环氧树脂100重量份，有机硅树脂20-40重量份，阻燃填料50-200重量份，抗氧剂2-5重量份，增韧剂1-8重量份，稀释剂30-200重量份；
B组分包括如下组分：2-(6-氧杂-6H-二苯-l，2-氧磷_6一烷基)一酚甲醛线性酚醛树脂10-20重量份，阻燃剂12-18重量份。
作为基体树脂，共同采用了两种树脂，有机硅树脂的耐高温性能优异，其使用提高了涂料的耐高温和阻燃性能，具体为含有环氧基团的有机硅树脂，通过环氧基团与环氧树脂一起固化，分散性好，最终固化物的硬度也较高。
环氧树脂采用了含磷环氧树脂在环氧树脂中就引入阻燃组分磷，含磷环氧树脂优选是通过DOPO HQ和ERL4221反应得到，进一步优选磷含量占环氧树脂质量控制在2%以上，氧指数达到28％，垂直燃烧达到了v-0,阻燃效果十分优异。
作为添加型阻燃填料优选采用了两种阻燃填料复配，利用其不同的性质和尺寸，配合使用产生了预料不到的效果。阻燃填料使用氢氧化铝和蒙脱土，氢氧化铝属于分解型阻燃剂，其经历加热、分解过程，分解吸热，蒙脱土属于阻隔性阻燃剂，两种通过不同机理进行阻燃。
作为优选技术方案，所述阻燃填料氢氧化铝和蒙脱土以3-6:2的重量比组成，氢氧化铝粒径为80-120μm，蒙脱土粒径为10-200nm。氢氧化铝在分解后形成更加稳定的氧化铝，蒙脱土具有更小的粒径，更大的比表面积以蒙脱土与氢氧化铝以特定比例配合，结合各自粒径，其间相互交叉、填补，提高了阻燃性能。如果粒径和用量不在上述范围内时，阻燃性能下降，涂层表面在火灾中易破损。
所述抗氧剂为抗氧剂1010、抗氧剂1076或抗氧剂168。
所述增韧剂为大片氧化石墨烯，优选粒径大于20μm，氧化石墨烯是具有优异的力学性能，是可以承受很大的应力，本发明中加入增韧剂是为了克服大量填料在燃烧中体积变化产生得应力，避免涂层表面过快的损坏，影响阻燃效果。同时，氧化石墨烯是采用经典的改性的Hummers方法制备得到，其保留了部分类苯环的大π键结构，具有耐高温性能，即使发生分解，其生成物为更加稳定的石墨烯，可以进一步提高阻燃、耐热性能。
所述阻燃剂为含氨基环三磷腈为六（2-氨基乙氧基）环三磷腈预交联物。所述阻燃剂是含氨基环三磷腈为六（2-氨基乙氧基）环三磷腈在酸性条件下缩聚3h后交联物。含氨基环三磷腈为六（2-氨基乙氧基）环三磷腈预交联物具有较大的分子量，在制备中少量外围氨基也会作为固化剂与环氧树脂和环氧有机硅树脂进行交联，其与聚酰胺配合，实现了更佳的交联效果。
同时，含氨基环三磷腈为六（2-氨基乙氧基）环三磷腈预交联物在高温下，自身运动增加，被包裹在内部的氨基会有部分漏出，作为固化剂，进一步与环氧树脂固化，提高了环氧树脂的交联程度，提高了阻燃、耐高温性能。
上述项阻燃门用阻燃双组份环氧树脂涂料在阻燃门制备中的应用，可以用于内侧、外侧以及层压板每层的涂层使用，或作为一种底涂剂、表面处理剂（非最外层）。阻燃门涂覆该涂料、固化完成后，阻燃效果优异，各项指标优于相关规定。
有益效果：
本发明综合多种阻燃方式，各种方式相互促进、相互配合，取得了有益的技术效果。具体为：采用高含磷量环氧树脂和环氧有机硅树脂配合作为基体树脂，提高了耐热和阻燃性能，氢氧化铝和蒙脱土以特定比例和粒径配合使用，通过分解和相互配合，达到了热量的有效阻碍，大幅提高了阻燃型；氧化石墨烯利用其优异的力学性能，本发明采用的为大尺度氧化石墨烯片，分散燃烧过程中分散的应力，标尺涂层表面稳定、不破裂。阻燃剂的使用既配合聚酰胺得到好的初期交联，又实现了燃烧过程中的二次交联。上述多种手段的共同作用，使该涂料、固化完成后，阻燃效果优异，各项指标优于相关规定，超过现有阻燃涂料的效果。
具体实施方式：
以下对本发明的原理和特征进行描述，所举实例只是用于解释本发明，并非用于限定本发明的范围。
实施例1
阻燃门用阻燃双组份环氧树脂涂料，由A、B两组分组成，A组分与B组分的质量比为1:1；A组分包含如下组分：磷含量2%以上的环氧树脂100重量份，含环氧基团的有机硅树脂20重量份，100μm氢氧化铝30重量份，100nm蒙脱土20重量份，抗氧剂2重量份，20μm粒径的氧化石墨烯4重量份，稀释剂50重量份；B组分包括如下组分：2-(6-氧杂-6H-二苯-l，2-氧磷_6一烷基)一酚甲醛线性酚醛树脂（以下简称固化剂）10重量份，含氨基环三磷腈为六（2-氨基乙氧基）环三磷腈预交联物（以下简称阻燃剂）12重量份。
实施例2
阻燃门用阻燃双组份环氧树脂涂料，由A、B两组分组成，A组分与B组分的质量比为3:1；A组分包含如下组分：磷含量2%以上的环氧树脂100重量份，含环氧基团的有机硅树脂40重量份，100μm氢氧化铝120重量份，100nm蒙脱土40重量份，抗氧剂5重量份，20μm粒径的氧化石墨烯8重量份，稀释剂150重量份；B组分包括如下组分：2-(6-氧杂-6H-二苯-l，2-氧磷_6一烷基)一酚甲醛线性酚醛树脂（以下简称固化剂）20重量份，含氨基环三磷腈为六（2-氨基乙氧基）环三磷腈预交联物（以下简称阻燃剂）18重量份。
对比例1-8 的A、B组分比例为1:1,，具体组成和比例见下表。
*：涂抹情况根据是否有裂痕和破损分为四个等级：优：无裂痕，良：少量裂痕，中：中等量裂痕，差：大量破损；
Claims (9)
1.一种阻燃门用阻燃双组份环氧树脂涂料，其特征在于：涂料由A、B两组分组成，A组分与B组分的质量比为1-3:1；
A组分包含如下组分：环氧树脂100重量份，有机硅树脂20-40重量份，阻燃填料50-200重量份，抗氧剂2-5重量份，增韧剂1-8重量份，稀释剂30-200重量份；
B组分包括如下组分：2-(6-氧杂-6H-二苯-l，2-氧磷_6-烷基)-酚甲醛线性酚醛树脂10-20重量份，阻燃剂12-18重量份。
2.如权利要求1所述阻燃门用阻燃双组份环氧树脂涂料，其特征在于：所述环氧树脂为含磷环氧树脂，磷含量占环氧树脂质量的2%以上。
3.如权利要求1所述阻燃门用阻燃双组份环氧树脂涂料，其特征在于：所述有机硅为含有环氧基团的有机硅树脂。
4.如权利要求1所述阻燃门用阻燃双组份环氧树脂涂料，其特征在于：所述阻燃填料为氢氧化铝和蒙脱土以3-6:2的重量比组成，氢氧化铝粒径为80-120μm，蒙脱土粒径为10-200nm。
5.如权利要求1所述阻燃门用阻燃双组份环氧树脂涂料，其特征在于：所述抗氧剂为抗氧剂1010、抗氧剂1076或抗氧剂168。
6.如权利要求1所述阻燃门用阻燃双组份环氧树脂涂料，其特征在于：所述增韧剂为大片氧化石墨烯，其粒径大于20μm。
7.如权利要求1所述阻燃门用阻燃双组份环氧树脂涂料，其特征在于：所述阻燃剂为含氨基环三磷腈为六（2-氨基乙氧基）环三磷腈预交联物。
8.如权利要求7所述阻燃门用阻燃双组份环氧树脂涂料，其特征在于：所述阻燃剂是含氨基环三磷腈为六（2-氨基乙氧基）环三磷腈在酸性条件下缩聚3h后产物。
9.权利要求1-8中任一项阻燃门用阻燃双组份环氧树脂涂料在阻燃门制备中的应用。
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| CN114213915A (zh) * | 2021-12-17 | 2022-03-22 | 东莞市春蕾涂料有限公司 | 一种天然无毒型水性涂料及其制备方法 |
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