CN111848902A - 一种低voc模塑高回弹聚氨酯及其制备方法 - Google Patents
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Abstract
本发明公开一种低VOC模塑高回弹聚氨酯及其制备方法。本发明的原料所述原料按重量份数比计:高回弹基础聚醚20‑95份,高回弹接枝聚醚5‑80份,交联剂0.3‑1.5份,催化剂A(6‑二甲胺基‑1‑己醇)0.2‑0.9份,催化剂B(N,N二甲基‑N、N、‑二(2‑羟丙基)‑1,3‑丙二胺)0.1‑0.6份,表面活性剂0.3‑1份,开孔剂1‑5份,异氰酸酯39‑60份。本发明中所述的原料配比与制备方法制备的模塑聚氨酯具有回弹性好,力学点性能优良,气味低,VOC低的特点,产品中的VOC含量符合国家标准;切采用的交联剂具有开孔效果,利用该交联剂制成的高回弹模塑具有更长的起发时间和放气时间,且无胀气,在硬度、回弹和拉伸强度上有大幅度提高,压陷的程度更小。
Description
技术领域
本发明高分子材料领域,具体地说是一种低VOC模塑高回弹聚氨酯及其制备方法。
背景技术
高回弹聚氨酯泡沫材料,具有优良的机械性能(高回弹性,低滞后损失)和较高的压缩负荷比值(sag因子),故有显著的坐感舒适性、优良的抗疲劳性能,良好的透气性,广泛用于汽车、摩托车、火车、飞机等各类机动车座椅
随着人们生活水平的提高,人们对车内空气质量的好坏越来越关注。VOC含量超标会引起机体免疫水平失调,影响神经系统功能,出现头晕、头痛、恶心、记忆力减退等问题,严重影响人类的身体健康。国家对VOC标准越来越严,处罚力度越来越大。主机厂对发泡VOC的要求越来越高。如何降低泡沫中的VOC含量已经是聚氨酯行业急需解决的问题。
发明内容
本发明的目的在于提出一种低VOC模塑高回弹聚氨酯及其制备方法,采用该方法制备的模塑聚氨酯具有回弹性好,力学点性能优良,气味低,VOC低的特点。
为实现上述目的,本发明所述一种低VOC模塑高回弹聚氨酯,其特征在于:所述原料按重量份数比计:高回弹基础聚醚20-95份,高回弹接枝聚醚5-80份,交联剂0.3-1.5份,催化剂A 0.2-0.9份,催化剂B 0.1-0.6份,表面活性剂0.3-1份,开孔剂 1-5份,异氰酸酯39-60份;
所述催化剂A为6-二甲胺基-1-己醇;
所述催化剂B为(N,N二甲基-N、N、-二(2-羟丙基)-1,3-丙二胺)。
所述交联剂为二乙醇胺或者三乙醇胺。
所述开孔剂聚氧化烯烃一聚硅氧烷共聚物。
所述表面活性剂为硅油。
所述异氰酸酯为巴斯夫的CW5010,CW5013或者拜尔MT20中的一种或组合。
所述一种低VOC模塑高回弹聚氨酯的制备方法,实现步骤如下:所述原料按重量份数比计:
1)配制聚醚组合料:将20-95份高回弹基础聚醚、5-80份高回弹接枝聚醚、0.2-0.9份催化剂A、0.1-0.9份催化剂B、0.3-1.5份交联剂、1-5份开孔剂、0.3-1份表面活性剂、2-5份水加入搅拌器中混合均匀,混合转度100-1000r/min,混合时间30-60min,混合后的聚醚组合料作为组一备用;
2)将39-60份异氰酸酯作为组二与备用组一反应,所述反应腔内部压力1.5-5bar,模具表面温度50-70℃,原料温度20-35℃,反应完全后得到低VOC模塑高回弹海绵。
本发明所述一种低VOC模塑高回弹聚氨酯及其制备方法,其有益效果在于:
采用该方法制备的模塑聚氨酯具有回弹性好,力学点性能优良,气味低,VOC低的特点,产品中的VOC含量符合国家标准;
采用的交联剂具有开孔效果,利用该交联剂制成的高回弹模塑具有更长的起发时间和放气时间,且无胀气,在硬度、回弹和拉伸强度上有大幅度提高,压陷的程度小。
具体实施方式
实施例1
本发明所述一种低VOC模塑高回弹聚氨酯的制备方法,实现步骤如下,所述原料按重量份数比计:首先按比例将高回弹基础聚醚:KE-810 84份,高回弹接枝聚醚:KE-880S 16份,交联剂:DEOA 0.8份,催化剂A:LE15 0.04份+LED103 0.2份,催化剂B:Z130 0.5份,表面活性剂:UA-8820LV 0.16+UA-8823LV 0.54,开孔剂:FA103 1.8份,水:3.8份加入混料罐中;然后用500r/min的转速搅拌30min,将混合均匀的原料做为一组聚醚组合料;
在一组聚醚组合料温度在20-35℃时,将混合好的一组聚醚组合料与异氰酸酯CW-5010按照100:39-60的质量比混合均匀后注入汽车座椅模具;模具温度50-70℃,模具合模压力1.0-5.0bar,3-5min后即可开模取出产品,得到低VOC座椅泡沫,得到的低VOC座椅泡沫VOC检测标准如下表一。
表一:本产品具有VOC含量低的特点。VOC检测标准为MS300-55(2016)。
化合物 | 空白结果 (μg/m<sup>3</sup>) | 检测结果 (μg/m<sup>3</sup>) | 标准限制 (μg/m<sup>3</sup>) | 判定 |
苯 | ND | ND | 110 | 合格 |
甲苯 | ND | 27 | 1100 | 合格 |
乙苯 | ND | ND | 1500 | 合格 |
二甲苯 | ND | 40 | 1500 | 合格 |
苯乙烯 | ND | ND | 260 | 合格 |
甲醛 | ND | ND | 100 | 合格 |
乙醛 | ND | ND | 50 | 合格 |
丙烯醛 | ND | ND | 50 | 合格 |
实施例2
本发明所述一种低VOC模塑高回弹聚氨酯的制备方法,实现步骤如下:所述原料按重量份数比计:
首先按比例将高回弹基础聚醚:KE-810 80份,高回弹接枝聚醚:KE-880S 20份,交联剂:DEOA 0.5份,催化剂A:LE15 0.06份+LED103 0.4份,催化剂B:Z130 0.66份,表面活性剂:UA-8820LV 0.2份+UA-8823LV 0.6份,开孔剂:2.2份,水:2.5份加入混料罐中,然后用500r/min的转速搅拌30min;将混合均匀的原料做为一组聚醚组合料;
在一组聚醚组合料温度在20-35℃时,将混合好的一组聚醚组合料与MT20按照100:39-60的质量比混合均匀后注入汽车座椅模具;模具温度50-70℃,模具合模压力1.0-5.0bar,3-5min后即可开模取出产品,得到低VOC座椅泡沫;本产品具有VOC含量低的特点,检测标准表如表二。
表二:VOC检测标准为MS300-55(2016)。
化合物 | 空白结果 (μg/m<sup>3</sup>) | 检测结果 (μg/m<sup>3</sup>) | 标准限制 (μg/m<sup>3</sup>) | 判定 |
苯 | ND | ND | 110 | 合格 |
甲苯 | ND | 67 | 1100 | 合格 |
乙苯 | ND | 10 | 1500 | 合格 |
二甲苯 | ND | 52 | 1500 | 合格 |
苯乙烯 | ND | ND | 260 | 合格 |
甲醛 | ND | ND | 100 | 合格 |
乙醛 | ND | ND | 50 | 合格 |
丙烯醛 | ND | ND | 50 | 合格 |
实施例3
本发明所述一种低VOC模塑高回弹聚氨酯的制备方法,实现步骤如下:所述原料按重量份数比计:
首先按比例将高回弹基础聚醚:KE-810 40份,高回弹接枝聚醚:KE-880S 60份,交联剂:DEOA 0.48份,催化剂A: LED103 0.18份,催化剂B:Z130 0.66份,表面活性剂:UA-8820LV 0.22份+UA-8823LV 0.58份,水:3.9份加入混料罐中,然后用500r/min的转速搅拌30min;将混合均匀的原料做为一组聚醚组合料;
在原料温度在20-35℃时,将混合好的一组聚醚组合料与MT20按照100:39-60的质量比混合均匀后注入汽车座椅模具;模具温度50-70℃,模具合模压力1.0-5.0bar,3-5min后即可开模取出产品,得到低VOC座椅泡沫;本产品具有低VOC的特点,检测标准表,如表三。
表三:VOC检测标准MS300-55(2016)。
化合物 | 空白结果 (μg/m<sup>3</sup>) | 检测结果 (μg/m<sup>3</sup>) | 标准限制 (μg/m<sup>3</sup>) | 判定 |
苯 | ND | ND | 110 | 合格 |
甲苯 | ND | 67 | 1100 | 合格 |
乙苯 | ND | 10 | 1500 | 合格 |
二甲苯 | ND | 52 | 1500 | 合格 |
苯乙烯 | ND | ND | 260 | 合格 |
甲醛 | ND | ND | 150 | 合格 |
乙醛 | ND | ND | 50 | 合格 |
丙烯醛 | ND | ND | 50 | 合格 |
Claims (6)
1.一种低VOC模塑高回弹聚氨酯,其特征在于:所述原料按重量份数比计:高回弹基础聚醚20-95份,高回弹接枝聚醚5-80份,交联剂0.3-1.5份,催化剂A 0.2-0.9份,催化剂B0.1-0.6份,表面活性剂0.3-1份,开孔剂 1-5份,异氰酸酯 39-60份;
所述催化剂A为6-二甲胺基-1-己醇;
所述催化剂B为(N,N二甲基-N、N、-二(2-羟丙基)-1,3-丙二胺)。
2.根据权利要求1所述一种低VOC模塑高回弹聚氨酯,其特征在于:所述交联剂为二乙醇胺或者三乙醇胺。
3.根据权利要求1所述一种低VOC模塑高回弹聚氨酯,其特征在于:所述开孔剂聚氧化烯烃一聚硅氧烷共聚物。
4.根据权利要求1所述一种低VOC模塑高回弹聚氨酯,其特征在于:所述表面活性剂为硅油。
5.根据权利要求1所述一种低VOC模塑高回弹聚氨酯,其特征在于:所述异氰酸酯为巴斯夫的CW5010,CW5013或者拜尔MT20中的一种或组合。
6.根据权利要求1所述一种低VOC模塑高回弹聚氨酯的制备方法,其特征在于:所述原料按重量份数比计:
1)配制聚醚组合料:将20-95份高回弹基础聚醚、5-80份高回弹接枝聚醚、0.2-0.9份催化剂A、0.1-0.9份催化剂B、0.3-1.5份交联剂、1-5份开孔剂、0.3-1份表面活性剂、2-5份水加入搅拌器中混合均匀,混合转度100-1000r/min,混合时间30-60min,混合后的聚醚组合料作为组一备用;
2)将39-60份异氰酸酯作为组二与备用组一反应,所述反应腔内部压力1.5-5bar,模具表面温度50-70℃,原料温度20-35℃,反应完全后得到低VOC模塑高回弹海绵。
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