CN106117489A - 纳米耐磨聚氨酯保温材料 - Google Patents
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Abstract
本发明公开了一种纳米耐磨聚氨酯保温材料,由以下重量份配比的原料发泡制成:2,6‑甲苯二异氰酸酯60‑80份,聚醚多元醇30‑40份,纳米氧化硅2‑4份,纳米氧化锌1‑3份,催化剂1‑3份,阻燃剂1‑3份,发泡剂0.5‑1份,硅油3‑5份,去离子水10‑12份。本发明纳米耐磨聚氨酯保温材料具有强度高、质量轻、导热低、尺寸稳定性良好、绝热效果好、耐磨防腐良好,还具有高效的阻燃能力;且没有使用氯氟烃(CFC),节能环保;同时加入了纳米氧化硅和纳米氧化锌,增强了耐磨性能也增加粘结强度。此外,本发明的制备工艺简单,成本低廉,设备要求低,生产过程环保,易于工业化生产,适于大范围推广应用。
Description
技术领域
本发明涉及保温材料技术领域,具体是一种纳米耐磨聚氨酯保温材料。
背景技术
普通的聚氨酯保温材料一般多采用官能度多、羟值高的聚醚多元醇与多异氰酸酯反应,制成交联网状结构的高分子聚合物。目前,聚氨酯作为保温材料,生产量越来越大,其具有硬度大、压缩强度高、尺寸稳定性较好、质量轻、导热系数低、闭孔率95%以上、防腐耐磨良好等优点,用途非常广泛,与其他泡沫塑料相比,还具有无毒、无异味、耐温等特性。同时,它对金属、砼、砖、石、木材、玻璃等有很强的黏结性。
在聚氨酯硬泡中,常用的发泡剂为氯氟烃(CFC)发泡剂,但是由于氯氟烃(CFC)发泡剂对大气臭氧层有破坏作用,为了维护生态环境,国际公约已经对其生产和使用做出了严格的限制和规定。现代固体物理研究表明,纳米粒子具有与宏观颗粒所不同的特殊的体积效应、表面界面效应和宏观量子隧道效应等,因而表现出独特的光、电、磁和化学特性,因而广泛的应用于橡胶、塑料、涂料、胶粘剂、密封胶等高分子工业领域。
发明内容
本发明的目的在于提供一种具有高抗压度、高拉伸度、收缩性能好、防腐耐磨且环保的纳米耐磨聚氨酯保温材料。
本发明解决技术问题的技术方案是:
一种纳米耐磨聚氨酯保温材料,由以下重量份配比的原料发泡制成:
2,6-甲苯二异氰酸酯60-80份,聚醚多元醇30-40份,纳米氧化硅2-4份, 纳米氧化锌1-3份,催化剂1-3份,阻燃剂1-3份,发泡剂0.5-1份,硅油3-5份,去离子水10-12份。
上述纳米耐磨聚氨酯保温材料,优选地,由以下重量份配比的原料发泡制成:
2,6-甲苯二异氰酸酯70份,聚醚多元醇35份,纳米氧化硅3份,纳米氧化锌2份,催化剂2份,阻燃剂2份,发泡剂0.8份,硅油4份,去离子水11份。
所述聚醚多元醇包括甘油聚醚和乙二胺聚醚,质量比例为2:1,分子量3000-4000,羟值400-500mgKOH/g,平均官能度4-5。
所述催化剂为N,N-二甲基环己胺。
所述阻燃剂为磷酸二氢铵。
所述发泡剂为三氯氟甲烷。
上述纳米耐磨聚氨酯保温材料的制备和使用方法包括如下步骤:
(1)按照上述原料的质量份配比;
(2)依次将聚醚多元醇催化剂、阻燃剂、发泡剂一起加入反应釜中,充满氮气或惰性气体进行保护,加热60-80℃,搅拌100-150min,降温至25-28℃,得混合物A,备用;
(3)再将步骤(2)所得混合物A中加入硅油、纳米氧化硅、纳米氧化锌、去离子水,搅拌均匀,得混合物B;
(4)混合物B在搅拌下加入2,6-甲苯二异氰酸酯,高速搅拌至发泡,泡沫稳定得到产品。
本发明产品的优点在于:本发明纳米耐磨聚氨酯保温材料具有强度高、质量轻、导热低、尺寸稳定性良好、绝热效果好、耐磨防腐良好,还具有高效的阻燃能力;且没有使用氯氟烃(CFC),节能环保;同时加入了纳米氧化硅和纳米氧化锌,增强了耐磨性能也增加粘结强度。此外,本发明的制备工艺简单,成本低廉,设备要求低,生产过程环保,易于工业化生产,适于大范围推广应用。
具体实施方式
以下结合实施例对本发明进一步说明,但本发明并不局限于这些实施例。
实施例1
一种纳米耐磨聚氨酯保温材料,由以下重量份配比的原料发泡制成:
2,6-甲苯二异氰酸酯60kg,聚醚多元醇30kg,纳米氧化硅2kg,纳米氧化锌1kg,催化剂1kg,阻燃剂1kg,发泡剂0.5kg,硅油3kg,去离子水10kg份。
所述聚醚多元醇包括甘油聚醚和乙二胺聚醚,质量比例为2:1,分子量3000,羟值400mgKOH/g,平均官能度4。
所述催化剂为N,N-二甲基环己胺。
所述阻燃剂为磷酸二氢铵。
所述发泡剂为三氯氟甲烷。
上述纳米耐磨聚氨酯保温材料的制备和使用方法包括如下步骤:
(1)按照上述原料的质量份配比;
(2)依次将聚醚多元醇、催化剂、阻燃剂、发泡剂一起加入反应釜中,充满氮气或惰性气体进行保护,加热60℃,搅拌100min,降温至25℃,得混合物A,备用;
(3)再将步骤(2)所得混合物A中加入硅油、纳米氧化硅、纳米氧化锌、去离子水,搅拌均匀,得混合物B;
(4)混合物B在搅拌下加入2,6-甲苯二异氰酸酯,高速搅拌至发泡,泡沫稳定得到产品。
实施例2
一种纳米耐磨聚氨酯保温材料,由以下重量份配比的原料发泡制成:
2,6-甲苯二异氰酸酯70kg,聚醚多元醇35kg,纳米氧化硅3kg,纳米氧化锌2kg,催化剂2kg,阻燃剂2kg,发泡剂0.8kg,硅油4kg,去离子水11kg。
所述聚醚多元醇包括甘油聚醚和乙二胺聚醚,质量比例为2:1,分子量3500,羟值450mgKOH/g,平均官能度4.5。
所述催化剂为N,N-二甲基环己胺。
所述阻燃剂为磷酸二氢铵。
所述发泡剂为三氯氟甲烷。
上述纳米耐磨聚氨酯保温材料的制备方法包括如下步骤:
(1)按照上述原料的质量份配比;
(2)依次将聚醚多元醇、催化剂、阻燃剂、发泡剂一起加入反应釜中,充满氮气或惰性气体进行保护,加热70℃,搅拌135min,降温至26℃,得混合物A,备用;
(3)再将步骤(2)所得混合物A中加入硅油、纳米氧化硅、纳米氧化锌、去离子水,搅拌均匀,得混合物B;
(4)混合物B在搅拌下加入2,6-甲苯二异氰酸酯,高速搅拌至发泡,泡沫稳定得到产品。
实施例3
一种纳米耐磨聚氨酯保温材料,由以下重量份配比的原料发泡制成:
2,6-甲苯二异氰酸酯80kg,聚醚多元醇40kg,纳米氧化硅4kg, 纳米氧化锌3kg,催化剂3kg,阻燃剂3kg,发泡剂1kg,硅油5kg,去离子水12kg。
所述聚醚多元醇包括甘油聚醚和乙二胺聚醚,质量比例为2:1,分子量4000,羟值500mgKOH/g,平均官能度5。
所述催化剂为N,N-二甲基环己胺。
所述阻燃剂为磷酸二氢铵。
所述发泡剂为三氯氟甲烷。
上述纳米耐磨聚氨酯保温材料的制备方法包括如下步骤:
(1)按照上述原料的质量份配比;
(2)依次将聚醚多元醇、催化剂、阻燃剂、发泡剂一起加入反应釜中,充满氮气或惰性气体进行保护,加热80℃,搅拌150min,降温至28℃,得混合物A,备用;
(3)再将步骤(2)所得混合物A中加入硅油、纳米氧化硅、纳米氧化锌、去离子水,搅拌均匀,得混合物B;
(4)混合物B在搅拌下加入2,6-甲苯二异氰酸酯,高速搅拌至发泡,泡沫稳定得到产品。
分别对实施例1-3制备得到的纳米耐磨聚氨酯保温材料的物理性能参数进行检测,并与现有普通聚氨酯保温材料对比,测试结果如表1所示。
性能指标 | 实施例1 | 实施例2 | 实施例3 | 对比例 |
压缩强度 MPa | 0.352 | 0.349 | 0.331 | 0.275 |
热释放速率 (KW/m2) | 121 | 119 | 116 | 151 |
导热系数 w/(m.k) | 0.021 | 0.019 | 0.018 | 0.034 |
闭孔率(%) | 96.7 | 96.2 | 97.1 | 91.1 |
由表可见,本发明以上实施例制备的纳米耐磨聚氨酯保温材料的抗压强度、热释放速率、导热系数、闭孔率等指标都比现有的保温材料有明显地提高,经冷冻或高温条件下无收缩、变形、膨胀、开裂等现象,是一种性能好的保温材料。
以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解: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;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims (6)
1.一种纳米耐磨聚氨酯保温材料,其特征在于:由以下重量份配比的原料发泡制成:
2,6-甲苯二异氰酸酯60-80份,聚醚多元醇30-40份,纳米氧化硅2-4份, 纳米氧化锌1-3份,催化剂1-3份,阻燃剂1-3份,发泡剂0.5-1份,硅油3-5份,去离子水10-12份;
所述聚醚多元醇包括甘油聚醚和乙二胺聚醚,质量比例为2:1,分子量3000-4000,羟值400-500mgKOH/g,平均官能度4-5。
2.根据权利要求1所述的纳米耐磨聚氨酯保温材料,其特征在于:由以下重量份配比的原料发泡制成:
2,6-甲苯二异氰酸酯70份,聚醚多元醇35份,纳米氧化硅3份,纳米氧化锌2份,催化剂2份,阻燃剂2份,发泡剂0.8份,硅油4份,去离子水11份。
3.根据权利要求1所述的纳米耐磨聚氨酯保温材料,其特征在于:所述催化剂为N,N-二甲基环己胺。
4.根据权利要求1所述的纳米耐磨聚氨酯保温材料,其特征在于:所述阻燃剂为磷酸二氢铵。
5.根据权利要求1所述的纳米耐磨聚氨酯保温材料,其特征在于:所述发泡剂为三氯氟甲烷。
6.根据权利要求1所述的纳米耐磨聚氨酯保温材料,其特征在于:其制备方法包括以下步骤:
(1)按照上述原料的质量份配比;
(2)依次将聚醚多元醇、催化剂、阻燃剂、发泡剂一起加入反应釜中,充满氮气或惰性气体进行保护,加热60-80℃,搅拌100-150min,降温至25-28℃,得混合物A,备用;
(3)再将步骤(2)所得混合物A中加入硅油、纳米氧化硅、纳米氧化锌、去离子水,搅拌均匀,得混合物B;
(4)混合物B在搅拌下加入2,6-甲苯二异氰酸酯,高速搅拌至发泡,泡沫稳定得到产品。
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