CN107501521A - 应用于管道内壁清洁器的聚氨酯发泡组合物及其制备方法 - Google Patents
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Abstract
本发明涉及一种应用于管道内壁清洁器的聚氨酯发泡组合物及其制备方法,属于聚氨酯应用技术领域。本发明所述的应用于管道内壁清洁器的聚氨酯发泡组合物,由甲组分和乙组分组成,甲、乙组分的重量百分比为100:115~130,其中甲组分由聚醚多元醇A、聚醚多元醇B、聚醚多元醇C、聚合物多元醇、扩链剂、开孔剂、泡沫稳定剂、催化剂、发泡剂和固体填料组成;乙组分由聚醚多元醇D、异氰酸酯和磷酸组成。本发明所述的应用于管道内壁清洁器的聚氨酯发泡组合物,常温为液态,方便储存和运输,制备的制品密度低、泡孔强度高,具有良好的吸附性和优异的承载耐磨能力;本发明同时提供了简单易行、节能降耗的制备方法。
Description
技术领域
本发明涉及一种应用于管道内壁清洁器的聚氨酯发泡组合物及其制备方法,属于聚氨酯应用技术领域。
背景技术
煤浆输送管道在长期使用过程中,内壁会积攒许多的油脂、污垢。如果不能顺利疏通管道,清理异物、淤泥等,长期下去容易造成管道内壁的堵塞,还会产生硫化氢等有毒有害气体,不仅使环境受到破坏污染,一旦达到最大阈值还可能有燃爆的危险。
CN 204234427U公开了一种煤浆输送管道清洗器,由聚氨酯泡沫塑料基体及硬纤维刷毛组成。聚氨酯泡沫塑料基体密度过小,会造成承载力不够,随着管内堆积物质的增多,制品容易发生形变或损坏,影响到清洗效果。
发明内容
本发明的目的是提供一种应用于管道内壁清洁器的聚氨酯发泡组合物,常温为液态,方便储存和运输,制备的制品密度低、泡孔强度高,具有良好的吸附性和优异的承载耐磨能力;本发明同时提供了简单易行、节能降耗的制备方法。
本发明所述的应用于管道内壁清洁器的聚氨酯发泡组合物,由甲组分和乙组分组成,甲、乙组分的重量百分比为100:115~130,其中:
(1)甲组分由以下重量百分含量的原料组成,以多元醇混合物的总重量为100%计量:
(2)乙组分由以下重量百分含量的原料组成:
聚醚多元醇D 30-40%
异氰酸酯 60-70%
磷酸 占乙组分总重量的0.001%;
所述聚醚多元醇A为以甘油为起始剂、伯羟基含量≥65%、数均分子量4500-7000、用氧化乙烯封端的聚氧化丙烯三元醇,优选EP-330NG(山东蓝星东大化工有限责任公司)、FA-703(可利亚多元醇南京有限公司)、YNW-330N(山东一诺威新材料有限公司);聚醚多元醇B官能度为2-4、数均分子量为200-800,优选MN-500、DL-400、DV-125(山东蓝星东大化工有限责任公司);聚醚多元醇C为官能度为2、分子量1000-2000的聚四氢呋喃二醇,优选PTMG-1000、PTMG2000(BASF公司,市售);聚合物多元醇为以乙烯基聚醚三醇为基础聚醚、用苯乙烯或丙烯腈接枝共聚、固含量≥25%的高活性聚合物多元醇,优选CHP-H45、POP45、POP36/30、POP36/28(山东蓝星东大化工有限责任公司)、CHP-H45(江苏长华聚氨酯科技有限公司);聚醚多元醇D官能度为2-3、数均分子量为4000-6000,优选330N、3600、ED-28(山东蓝星东大化工有限责任公司)、KE-810(可利亚多元醇南京有限公司)。
所述扩链剂为乙二醇(EG)、一缩二乙二醇(DEG)、1,4-丁二醇(1,4-BG)、1,3-丙二醇(1,3-PG)或一缩二丙二醇(DPG)中的一种或多种。
所述开孔剂为由环氧乙烷和环氧丙烷开环聚合、以有机硅氧烷改性的数均分子量为5000-6000、官能度为3的聚醚多元醇,优选DK-12(山东蓝星东大化工有限责任公司)、SD-75(上海东大化学有限责任公司)、YNW-25K(山东一诺威新材料有限公司)。
所述泡孔稳定剂为聚硅氧烷-氧化烯烃嵌段共聚物,优选AK-7703(南京德美世创化工有限公司),DC2525(美国空气化工产品有限公司)。
所述催化剂为叔胺类催化剂和金属类催化剂以任意质量比混合的混合物,其中叔胺类催化剂优选A-33(市售)、A-1(市售)、C-225(美国气体),金属催化剂优选T-9、T-12(市售)。
所述发泡剂为H2O。
所述固体填料为市售的轻质碳酸钙或滑石粉。
所述异氰酸酯为改性的异氰酸酯,-NCO-质量分数为19-22%。
所述异氰酸酯为碳化二亚胺改性MDI、纯MDI或MDI-50的一种或多种,优选MDI-100、MDI-50(万华),44C、CD-C(拜耳),103C(BASF)。
所述的应用于管道内壁清洁器的聚氨酯发泡组合物的制备方法,包括以下步骤:
(1)制备甲组分:将聚醚多元醇A、聚醚多元醇B、聚醚多元醇C和聚合物多元醇投入反应釜中搅拌,然后加入扩链剂、开孔剂、泡沫稳定剂、催化剂、发泡剂及固体填料,常温搅拌2~3小时;
(2)制备乙组分:先将异氰酸酯投入到反应釜中并搅拌,然后加入低于40℃的磷酸和聚醚多元醇D,再升温到80-85℃,保温2-3h;
(3)使用时,将甲、乙组分分别注入低压浇注机料罐中,加热至35-45℃,按重量比混合后注入模温为45-55℃的模具中,5-8分钟脱模,即得到所述的应用于管道内壁清洁器的聚氨酯发泡组合物。
本发明通过将聚醚多元醇A、B、C和聚合物多元醇复合,即将不同功能的多元醇进行复合,再结合其他助剂,使得制得的产品具有良好的吸附性和优异的承载耐磨能力。
本发明具有以下有益效果:
(1)制品密度低、泡孔均匀,具有优异的吸附性能;同时泡孔结构稳定、强度高,制品的承载耐磨性好,不易发生形变,保证了实用性;
(2)组合物甲、乙组分常温为液状,方便储存和运输;
(3)制备工艺简单、无需高温硫化,节能降耗,显著降低了生产成本。
具体实施方式
下面结合实施例对本发明作进一步的说明,但其并不限制本发明的实施。
以下实施例中所用原料均为市售产品,各组分重量单位为kg。
实施例1
甲组分:
乙组分:
碳化二亚胺改性MDI 15kg
MDI-100 50kg
330N 35kg
甲组分:将称量好的330N、DV125、PTMG2000、CHP-H45投入反应釜中搅拌,然后加入计量准确的EG、SD-75、A1、A33、T12、H2O、AK-7703及轻质碳酸钙,搅拌2小时,取样合格即得甲组分。
乙组分:将配方量的碳化二亚胺改性MDI及MDI-100依次加入到搅拌釜中,开启搅拌,然后加低于40℃的计量准确的磷酸和330N,升温至80-85℃,保温3h,检测合格即得乙组分。
使用时,将制备的甲组分与乙组分分别注入低压浇注机料罐,加热到35℃,按A:B=100:128的重量比混合均匀后注入模温45℃的模具,6分钟脱模即得到所述的应用于管道内壁清洁器的聚氨酯发泡产品。
实施例2
甲组分:
乙组分:
103C 20kg
MDI-100 50kg
EP-3600 30kg
甲组分:将称量好的FA-703、MN-500、PTMG2000、POP45投入反应釜中搅拌,然后加入计量准确的1,4-BG、EG、DK-12、A33、H2O、DC2525及轻质碳酸钙,搅拌3小时,取样合格即得甲组分。
乙组分:将配方量的103C、MDI-100依次加到搅拌釜中,开启搅拌,然后加低于40℃的计量准确的磷酸和EP-3600,升温至80-85℃,保温搅拌2h,检测合格即得乙组分。
使用时,将制备的甲组分与乙组分分别注入低压浇注机料罐,加热到35℃,按A:B=100:116的重量比混合均匀后注入模温45℃的模具,6分钟脱模即得到所述的应用于管道内壁清洁器的聚氨酯发泡产品。
实施例3
甲组分:
乙组分:
甲组分:将称量好的330N、DV125、CHP-H45投入反应釜中搅拌,然后加计量准确的DPG、EG、25K、A1、A33、H2O、AK-7703及轻质碳酸钙,搅拌2小时,取样合格即得甲组分。
乙组分:将配方量的碳化二亚胺改性MDI、MDI-50、44C加到搅拌釜中,开启搅拌,然后加低于40℃的计量准确的磷酸和ED-28,升温至80-85℃,保温3h,检测合格即得乙组分。
使用时,将制备的甲组分与乙组分分别注入低压浇注机料罐,加热到35℃,按A:B=100:124的重量比混合均匀后注入模温45℃的模具,6分钟脱模即得到所述的应用于管道内壁清洁器的聚氨酯发泡产品。
实施例4
甲组分:
乙组分:
碳化二亚胺改性MDI 30kg
44C 35kg
KE-810 35kg
甲组分:将称量好的330N、DV125、PTMG1000、CHP-H45投入反应釜中搅拌,然后加入计量准确的EG、SD-75、C225、A33、H2O、DC2525及轻质碳酸钙,搅拌3小时,取样合格即得甲组分。
乙组分:将配方量的碳化二亚胺改性MDI、44C加到搅拌釜中,开启搅拌,然后加低于40℃的计量准确的磷酸和KE-810,升温至80-85℃,保温2.5h,检测合格即得乙组分。
使用时,将制备的甲组分与乙组分分别注入低压浇注机料罐,加热到35℃,按A:B=100:120的重量比混合均匀后注入模温45℃的模具,6分钟脱模即得到所述的应用于管道内壁清洁器的聚氨酯发泡产品。
实施例1-4所得的制品物理特性具体分析如表1:
表1管道内壁清洁器发泡制品的物理特性
项目 | 实施例1 | 实施例2 | 实施例3 | 实施例4 |
密度(kg/m3) | 243 | 248 | 245 | 247 |
壁壳硬度(A) | 65 | 67 | 64 | 66 |
尺寸保持率(%) | 0.98 | 0.97 | 0.97 | 0.96 |
注:尺寸保持率=制品使用后的体积/开模时的制品体积,尺寸保持率越好说明制品泡沫结构稳定,不易发生形变,保持了产品的实用性。
Claims (10)
1.一种应用于管道内壁清洁器的聚氨酯发泡组合物,其特征在于:由甲组分和乙组分组成,甲、乙组分的重量百分比为100:115~130,其中:
(1)甲组分由以下重量百分含量的原料组成,以多元醇混合物的总重量为100%计量:
(2)乙组分由以下重量百分含量的原料组成:
聚醚多元醇D 30-40%
异氰酸酯 60-70%
磷酸 占乙组分总重量的0.001%;
所述聚醚多元醇A为以甘油为起始剂、伯羟基含量≥65%、数均分子量4500-7000、用氧化乙烯封端的聚氧化丙烯三元醇;
所述聚醚多元醇B官能度为2-4、数均分子量为200-800;
所述聚醚多元醇C为官能度为2、分子量1000-2000的聚四氢呋喃二醇;聚合物多元醇为以乙烯基聚醚三醇为基础聚醚、用苯乙烯或丙烯腈接枝共聚、固含量≥25%的聚合物多元醇;
所述聚醚多元醇D官能度为2-3、数均分子量为4000-6000。
2.根据权利要求1所述的应用于管道内壁清洁器的聚氨酯发泡组合物,其特征在于:扩链剂为乙二醇、一缩二乙二醇、1,4-丁二醇、1,3-丙二醇或一缩二丙二醇中的一种或多种。
3.根据权利要求1所述的应用于管道内壁清洁器的聚氨酯发泡组合物,其特征在于:开孔剂为由环氧乙烷和环氧丙烷开环聚合、以有机硅氧烷改性的数均分子量为5000-6000、官能度为3的聚醚多元醇。
4.根据权利要求1所述的应用于管道内壁清洁器的聚氨酯发泡组合物,其特征在于:泡孔稳定剂为聚硅氧烷-氧化烯烃嵌段共聚物。
5.根据权利要求1所述的应用于管道内壁清洁器的聚氨酯发泡组合物,其特征在于:催化剂为叔胺类催化剂和金属类催化剂以任意质量比混合的混合物。
6.根据权利要求1所述的应用于管道内壁清洁器的聚氨酯发泡组合物,其特征在于:发泡剂为H2O。
7.根据权利要求1所述的应用于管道内壁清洁器的聚氨酯发泡组合物,其特征在于:固体填料为轻质碳酸钙或滑石粉。
8.根据权利要求1所述的应用于管道内壁清洁器的聚氨酯发泡组合物,其特征在于:异氰酸酯为改性的异氰酸酯,-NCO-质量分数为19-22%。
9.根据权利要求8所述的应用于管道内壁清洁器的聚氨酯发泡组合物,其特征在于:异氰酸酯为碳化二亚胺改性MDI、纯MDI或MDI-50的一种或多种。
10.一种权利要求1-9任一所述的应用于管道内壁清洁器的聚氨酯发泡组合物的制备方法,其特征在于包括以下步骤:
(1)制备甲组分:将聚醚多元醇A、聚醚多元醇B、聚醚多元醇C和聚合物多元醇投入反应釜中搅拌,然后加入扩链剂、开孔剂、泡沫稳定剂、催化剂、发泡剂及固体填料,常温搅拌2~3小时;
(2)制备乙组分:先将异氰酸酯投入到反应釜中并搅拌,然后加入低于40℃的磷酸和聚醚多元醇D,再升温到80-85℃,保温2-3h;
(3)使用时,将甲、乙组分分别注入低压浇注机料罐中,加热至35-45℃,按重量比混合后注入模温为45-55℃的模具中,5-8分钟脱模,即得到所述的应用于管道内壁清洁器的聚氨酯发泡组合物。
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