CN104403084A - 管道保温用阻燃材料及其制备方法 - Google Patents
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Abstract
本发明涉及一种阻燃材料，具体涉及一种管道保温用阻燃材料及其制备方法。本发明所述的管道保温用阻燃材料，由A组分和B组分组成，A组分由聚醚多元醇A、聚醚多元醇B、聚酯多元醇C、泡沫稳定剂、去离子水、催化剂、阻燃剂组成，B组份为多苯基多亚甲基多异氰酸酯。将A、B组份料按A:B＝1:1.4-1.6的重量比混合均匀，即得管道保温用阻燃材料。本发明所述的管道保温用阻燃材料具有较好流动性及密度分布数、满足阻燃要求、绿色环保、操作简单。
Description
技术领域
本发明涉及一种阻燃材料，具体涉及一种管道保温用阻燃材料及其制备方法。
背景技术
聚氨酯泡沫塑料是目前所有隔热保温材料中的佼佼者，广泛用于供热管道、冰箱冰柜、建筑保温等诸多方面，在我国，普通热力管道保温材料已经使用多年，技术已经相对成熟，产品性能均能满足使用要求。但随着石化行业及特殊应用领域的逐渐增多，普通聚氨酯硬泡成型管道普遍存在不阻燃、泡沫易燃烧等问题，造成重大安全事故。在石化、LNG输送管线、矿井管道等领域，通常使用岩棉、玻璃丝棉、高密度EPS及XPS，由于这些材料自身的性质决定，其保温效果及长期应用性均不理想，普遍存在吸水率高、热损多，施工工艺复杂等问题，给日常工艺操作及运转造成很多不便。
发明内容
本发明的目的是提供一种体系具有较好流动性及密度分布数、满足阻燃要求的管道保温用阻燃材料；本发明同时提供其制备方法。
本发明所述的管道保温用阻燃材料，由A组分和B组分组成，其中：
A组份以质量百分数计原料如下：
B组份为多苯基多亚甲基多异氰酸酯。
其中，
聚醚多元醇A为5-6官能度，分子量为300-1000的聚环氧丙烷醚多元醇；
聚醚多元醇B为4官能度，分子量为500-1000的聚环氧丙烷醚多元醇；
聚酯多元醇C为2官能度，羟值为230-250mgKOH/g，分子量为400-500改性苯酐芳香族聚酯多元醇。
所述的泡沫稳定剂为Si-C类表面活性剂，优选赢创德固赛公司的产品B8545或迈图高新材料集团的产品L6920。
所述的发泡剂为去离子水。
所述的催化剂为有机胺类催化剂与有机金属催化剂搭配使用，为二月桂酸二丁基锡、N,N二甲基环己胺和四甲基乙二胺，三者之间的质量比为0.1-0.5:0.4-1.3:0.3-0.8。
所述的阻燃剂为磷酸酯类添加型阻燃剂，采用三(2-氯丙基)磷酸酯和三乙基磷酸酯搭配使用，两者质量比为70-90:5-35。
本发明所述的管道保温用阻燃材料的制备方法，包括以下步骤：
制备A组份料：先将称量好的聚醚多元醇A、聚醚多元醇B、聚酯多元醇C装入反应釜中搅拌，然后加入称量好的催化剂、去离子水、泡沫稳定剂、阻燃剂，常温搅拌1小时，取样检测合格后，即可装桶；
将A、B组份料按A:B＝1:(1.4-1.6)的重量比混合均匀，即得管道保温用阻燃材料。
本发明制得的管道保温用阻燃材料经检测，产品性能可以达到以下指标：
性能达到了管道保温用材料的要求。
本发明的有益效果如下：
(1)本发明管道保温用阻燃材料通过优选聚醚多元醇、聚酯多元醇与复配阻燃剂合理搭配，在保证体系具有较好流动性及密度分布数据的同时，使泡沫阻燃性达到B2级(氧指数26以上)，满足特殊应用领域的阻燃要求；
(2)本发明材料所使用的原材料绿色环保，低气味，无污染，使用过程中不产生任何有毒气体，完全满足环保要求；
(3)本发明材料通过高压发泡机混合均匀后注射到管道腔体，发泡成型即可制得阻燃保温管道，操作简单方便。
具体实施方式
以下结合实施例对本发明做进一步描述。
实施例1：
制备A组份料100公斤，分别称量：聚醚多元醇A(6官能度，分子量为800)50公斤，聚醚多元醇B(4官能度，分子量为650)10公斤，聚酯多元醇C(2官能度，羟值240mgKOH/g，分子量400)10公斤，B8545(赢创德固赛)1.7公斤，去离子水2.5公斤，二月桂酸二丁基锡0.1公斤，N,N二甲基环己胺0.7公斤，四甲基乙二胺0.4公斤，三(2-氯丙基)磷酸酯17.6公斤，三乙基磷酸酯7公斤。将称量好的聚醚多元醇和聚酯多元醇装入混合釜中搅拌，然后分别加入称好的催化剂、水、泡沫稳定剂、复配阻燃剂，在常温下搅拌一小时，取样检测合格后，即可装桶。
将A、B组份料按A:B＝100:140重量配比混合制成管道保温用阻燃材料，产品性能指标如下：
实施例2：
制备A组份料100公斤，分别称量：聚醚多元醇A(6官能度，分子量为800)42公斤，聚醚多元醇B(4官能度，分子量为650)26公斤，聚酯多元醇C(2官能度，羟值240mgKOH/g，分子量500)6公斤，B8545(赢创德固赛)2.2公斤，去离子水2公斤，二月桂酸二丁基锡0.3公斤，N,N二甲基环己胺0.5公斤，四甲基乙二胺0.4公斤，三(2-氯丙基)磷酸酯15公斤，三乙基磷酸酯5公斤。将称量好的聚醚多元醇和聚酯多元醇装入混合釜中搅拌，然后分别加入称好的催化剂、水、泡沫稳定剂、复配阻燃剂，在常温下搅拌一小时，取样检测合格后，即可装桶。
将A、B组份料按A:B＝100:150重量配比混合制成管道保温用阻燃材料，产品性能指标如下：
实施例3：
制备A组份料100公斤，分别称量：聚醚多元醇A(6官能度，分子量为800)35公斤，聚醚多元醇B(4官能度，分子量为650)21公斤，聚酯多元醇C(2官能度，羟值240mgKOH/g，分子量450)14公斤，L6920(迈图)1.5公斤，去离子水2.7公斤，二月桂酸二丁基锡0.3公斤，N,N二甲基环己胺0.6公斤，四甲基乙二胺0.3公斤，三(2-氯丙基)磷酸酯17.6公斤，三乙基磷酸酯7公斤。将称量好的聚醚多元醇和聚酯多元醇装入混合釜中搅拌，然后分别加入称好的催化剂、水、泡沫稳定剂、复配阻燃剂，在常温下搅拌一小时，取样检测合格后，即可装桶。
将A、B组份料按A:B＝100:160重量配比混合制成管道保温用阻燃材料，产品性能指标如下：
Claims (9)
1.一种管道保温用阻燃材料，其特征在于由A组分和B组分组成，其中：
A组份以质量百分数计原料如下：
B组份为多苯基多亚甲基多异氰酸酯；
其中，
聚醚多元醇A为5-6官能度，分子量为300—1000的聚环氧丙烷醚多元醇；
聚醚多元醇B为4官能度，分子量为500—1000的聚环氧丙烷醚多元醇；
聚酯多元醇C为2官能度，羟值为230—250mgKOH/g，分子量为400-500的改性苯酐芳香族聚酯多元醇。
2.根据权利要求1所述的管道保温用阻燃材料，其特征在于所述的泡沫稳定剂为Si-C类表面活性剂。
3.根据权利要求1或2所述的管道保温用阻燃材料，其特征在于所述的泡沫稳定剂为B8545或L6920。
4.根据权利要求1所述的管道保温用阻燃材料，其特征在于所述的发泡剂为去离子水。
5.根据权利要求1所述的管道保温用阻燃材料，其特征在于所述的催化剂为有机胺类催化剂与有机金属催化剂的混合物。
6.根据权利要求1或5所述的管道保温用阻燃材料，其特征在于所述的催化剂为二月桂酸二丁基锡、N，N-二甲基环己胺和四甲基乙二胺，三者之间的质量比为0.1-0.5:0.4-1.3:0.3-0.8。
7.根据权利要求1所述的管道保温用阻燃材料，其特征在于所述的阻燃剂为磷酸酯类添加型阻燃剂。
8.根据权利要求1或7所述的管道保温用阻燃材料，其特征在于所述的阻燃剂为三(2-氯丙基)磷酸酯和三乙基磷酸酯的混合物，两者质量比为70-90:5-35。
9.一种权利要求1所述的管道保温用阻燃材料的制备方法，其特征在于包括以下步骤：
制备A组份料：先将称量好的聚醚多元醇A、聚醚多元醇B、聚酯多元醇C装入反应釜中搅拌，然后加入称量好的催化剂、去离子水、泡沫稳定剂、阻燃剂，常温搅拌1小时，取样检测合格后，即可装桶；
将A、B组份料按A:B＝1:1.4-1.6的重量比混合均匀，即得管道保温用阻燃材料。
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