CN105860051A - 聚氨酯泡沫用低气味聚醚的制备方法及制得产品的应用 - Google Patents
聚氨酯泡沫用低气味聚醚的制备方法及制得产品的应用 Download PDFInfo
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Abstract
本发明公开了一种聚氨酯泡沫用低气味聚醚的制备方法及制得产品的应用，该方法以甘油为起始剂；氢氧化钠为催化剂；与环氧丙烷在低温下开环聚合反应制备；制备方法是由以下重量份数的原料制成：甘油5‑10；氢氧化钠0.5‑0.8；环氧丙烷200‑300，三乙醇胺：3‑5；制备过程中采用精制吸附剂来吸附氢氧化钠。采用该聚醚制备的聚氨酯泡沫塑料泡沫质量更好，气味更低。
Description
技术领域
本发明属于有机高分子化合物的制备方法，具体地说是一种聚氨酯泡沫用低气味聚醚的制备方法及制得产品的应用。
背景技术
随着聚醚多元醇生产工艺的不断改进，产品的质量也在不断提高,但聚醚产品的气味问题还是没有得到很好的解决，尤其是应用于家具、汽车、服装等行业，与人们的日常生活直接相关气味问题显得尤为突出。
发明内容
本发明的目的是提供一种聚氨酯泡沫用低气味聚醚的制备方法及制得产品的应用，采用该聚醚制备的聚氨酯泡沫塑料泡沫质量更好，气味更低。
本发明的目的是通过以下技术方案来实现的：
一种聚氨酯泡沫用低气味聚醚的制备方法，其特征在于：该方法以甘油为起始剂；氢氧化钠为催化剂；与环氧丙烷在低温下开环聚合反应制备；采用精制吸附剂去除催化剂氢氧化钠；加入三乙醇胺与聚醚中的醛类物质反应成为不易挥发的大分子，包括如下步骤：
1）将甘油、氢氧化钠投入到反应器中，重量份数为：甘油5-10；氢氧化钠0.5-0.8；
2）然后在120-130℃温度下通过氮气流脱水，水份合格后，降低温度至100-110℃缓慢通入重量份数为200-300的环氧丙烷，环氧丙烷投加结束后，搅拌1-3小时，使体系充分反应，然后抽真空，冷却后制得粗聚醚；水份合格是指水份质量分数低于0.05%；
3）将粗聚醚投入到反应器中，加入占粗聚醚重量份数1%精制吸附剂（精制吸附剂生产厂家为枣阳市永华化工有限公司，牌号为ZH-AD100S），控制温度在80-90℃，搅拌1-2小时后升温至110-120℃，进行抽真空2小时，然后经过过滤，再加入重量份数为3-5的三乙醇胺，控制温度在80-90℃，搅拌2小时后得到聚氨酯泡沫用低气味聚醚。
聚醚常规生产工艺路线是采用磷酸加入到粗聚醚中与碱性催化剂发生中和反应来去除催化剂，这个过程中会磷酸与聚醚接触有副反应产生低分子醛类物质，使得聚醚气味变大：本发明不采用中和反应的工艺路线，而是使用精制吸附剂直接通过吸附去除碱性催化剂，避免了使用磷酸与聚醚接触产生低分子醛类的环节，然后采用过量的三乙醇胺和聚醚中微量的低分子醛类反应成为不易挥发的大分子，从而达到降低聚醚气味的效果，而且反应后的大分子仍含有羟基，不影响聚氨酯发泡应用。
具体实施方式
下面通过具体实施例对本发明作进一步的说明，但各实施例均不是对本发明的具体限制。
实施例1
一种聚氨酯泡沫用低气味聚醚的制备方法，以甘油为起始剂；氢氧化钠为催化剂；与环氧丙烷在低温下开环聚合反应制备，采用三乙醇胺消除低分子醛类。包括如下步骤：
①原料重量份数为：甘油（JOC GREAT WALLCO.LTD）5份；氢氧化钠（南京化学试剂厂）0.6份；环氧丙烷（利安德）200份；三乙醇胺3份；
②将甘油、氢氧化钠投入到反应器中，然后在120-130℃温度下通过氮气流脱水，水份低于0.05%（质量分数）后，降低温度至110℃缓慢通入环氧丙烷，环氧丙烷投加结束后，搅拌1-3小时，使体系充分反应，然后抽真空，冷却后制得粗聚醚。
③将粗聚醚投入到反应器中，加入占粗聚醚重量份数0.3%精制吸附剂（精制吸附剂生产厂家为枣阳市永华化工有限公司，牌号为ZH-AD100NS），控制温度在80-90℃，搅拌1-2小时后升温至110-120℃，进行抽真空2小时，然后经过过滤，再加入三乙醇胺，控制温度在80-90℃，搅拌2小时后得到低气味聚醚。
实施例2
一种聚氨酯泡沫用低气味聚醚的制备方法，以甘油为起始剂；氢氧化钠为催化剂；与环氧丙烷在低温下开环聚合反应制备。包括如下步骤：
①原料重量份数为：甘油（JOC GREAT WALLCO.LTD）5份；氢氧化钠（南京化学试剂厂）0.6份；环氧丙烷（利安德）200份；三乙醇胺5份
②将甘油、氢氧化钠投入到反应器中，然后在120-130℃温度下通过氮气流脱水，水份合格后，降低温度至100℃缓慢通入环氧丙烷，环氧丙烷投加结束后，搅拌1-3小时，使体系充分反应，然后抽真空，冷却后制得粗聚醚。
③将粗聚醚投入到反应器中，加入占粗聚醚重量份数1%精制吸附剂（精制吸附剂生产厂家为枣阳市永华化工有限公司，牌号为ZH-AD100NS），控制温度在80-90℃，搅拌1-2小时后升温至110-120℃，进行抽真空2小时，然后经过过滤，再加入三乙醇胺，控制温度在80-90℃，搅拌2小时后得到低气味聚醚。
实施例3
一种上述制备方法制得的低气味聚醚的应用，取聚氨酯泡沫用聚醚多元醇100份，硅油2份，三乙烯二胺催化剂0.2份，水3份，异氰酸酯110份，高速搅拌混合后发泡制得聚氨酯泡沫制品。
Claims (3)
1.一种聚氨酯泡沫用低气味聚醚的制备方法，其特征在于：该方法以甘油为起始剂；氢氧化钠为催化剂；与环氧丙烷在低温下开环聚合反应制备；包括如下步骤：
1）将甘油、氢氧化钠投入到反应器中，重量份数为：甘油5-10；氢氧化钠0.5-0.8；
2）然后在120-130℃温度下通过氮气流脱水，水份合格后，降低温度至100-110℃缓慢通入重量份数为200-300的环氧丙烷，环氧丙烷投加结束后，搅拌1-3小时，使体系充分反应，然后抽真空，冷却后制得粗聚醚；
3）将粗聚醚投入到反应器中，加入占粗聚醚质量份数1%精制吸附剂，控制温度在80-90℃，搅拌1-2小时后升温至110-120℃，进行抽真空2小时，然后经过过滤，再加入重量份数为3-5的三乙醇胺，控制温度在80-90℃，搅拌2小时后得到聚氨酯泡沫用低气味聚醚。
2.根据权利要求1所述的聚氨酯泡沫用低气味聚醚的制备方法，其特征在于：水份合格是指水份质量分数低于0.05%。
3.一种权利要求1所述制备方法制得的低气味聚醚在聚氨酯泡沫中的应用。
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| WO2018000556A1 (zh) * | 2016-06-29 | 2018-01-04 | 句容宁武新材料股份有限公司 | 聚氨酯泡沫用低气味聚醚的制备方法及制得产品的应用 |
| CN112608447A (zh) * | 2020-12-15 | 2021-04-06 | 无锡吉兴木桥高分子材料科技有限公司 | 一种高透气性半硬质聚氨酯泡沫及其制备方法 |
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| CN113773486B (zh) * | 2020-06-09 | 2024-06-28 | 中国石油化工股份有限公司 | 一种聚醚多元醇的精制方法及其产物与应用 |
| CN116082619A (zh) * | 2021-11-05 | 2023-05-09 | 万华化学集团股份有限公司 | 一种低气味聚醚多元醇生产方法 |
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| CN112608447B (zh) * | 2020-12-15 | 2022-09-09 | 无锡吉兴汽车部件有限公司 | 一种高透气性半硬质聚氨酯泡沫及其制备方法 |
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