CN103665317A - 一种空心玻璃微珠填充环氧改性聚氨酯的制备方法 - Google Patents
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Abstract
一种空心玻璃微珠填充环氧改性聚氨酯的制备方法,包括空心玻璃微珠的预处理,环氧改性聚氨酯乳液的制备,空心玻璃微珠填充环氧改性聚氨酯复合材料的制备三个过程。本发明得到的空心玻璃微珠填充环氧改性聚氨酯成膜后具有低密度、强耐水性及耐溶剂性。
Description
技术领域
本发明涉及一种空心玻璃微珠填充环氧改性聚氨酯的制备方法,属化工领域。
技术背景
空心玻璃微珠填充环氧树脂复合材料具有较低的密度,广泛应用于航空隔热材料和深海浮力材料中,,另外由于环氧树脂具有高模量、高强度和耐化学性好、热稳定性好等优点,而且可直接参与水性聚氨酯的合成反应,从而提高聚氨酯的耐水、耐溶剂、耐热蠕变性能及拉伸强度等。本发明利用了环氧树脂的环氧基和羟基参与反应,形成多重交联,制得环氧树脂改性的水性聚氨酯,具有良好的稳定性、耐水性及耐溶剂性。
发明内容
本发明的目的是提供一种空心玻璃微珠填充环氧改性聚氨酯的制备方法,具有低密度、强耐水性及耐溶剂性。
为实现以上目的,本发明的一种空心玻璃微珠填充环氧改性聚氨酯的制备方法为:
(1) 空心玻璃微珠的预处理:取干燥后的空心玻璃微珠加入到硅烷偶联剂KH-550与无水乙醇的混合溶液中,于70℃水浴中充分搅拌1h,进行减压抽滤去除溶剂,烘干备用;
(2) 环氧改性聚氨酯乳液的制备:以2,6-甲苯二异氰酸酯(TDI)、聚醚二醇(GE-210)、1,4-丁二醇(BDO)、二羟甲基丙酸(DMPA),环氧树脂(E-128)为原料制备预聚体,降温至40℃,加入三乙胺进行中和反应生成盐,反应3-4min,加入水进行乳化60min,得到环氧改性聚氨酯乳液;
(3) 空心玻璃微珠填充环氧改性聚氨酯复合材料的制备:在上述环氧改性聚氨酯乳液中加入固化剂,于70℃下充分搅拌混合后,进行真空脱泡,加入经硅烷偶联剂处理的空心玻璃微珠,充分搅拌混合后,进行模压成型,得到空心玻璃微珠填充的环氧改性聚氨酯复合材料。
所述的步骤(1)中硅烷偶联剂KH-550与无水乙醇的质量比为1:6-1:8。
所述的步骤(2)中预聚体原料的配比为:TDI与GE-210、DMPA、BDO、E-128的摩尔比为1.2:1-1.3:1,BDO占预聚体质量的2%-3%,DMPA占预聚体质量的4%-5%,E-128占预聚体质量的5%-6%;三乙胺的物质的量与DMPA的物质的量相同;水的用量为预聚体总质量的2倍。
所述的步骤(3)中空心玻璃微珠的加入量为环氧改性聚氨酯乳液质量的40-50%。
本发明产生的有益效果为,本专利采用环氧树脂改性水性聚氨酯,充分利用环氧树脂的环氧基和羟基参与反应,形成多重交联,提高水性聚氨酯的耐化学性和力学性能,在其中加入空心玻璃微珠可降低复合材料的密度,增强压缩强度及弯曲强度。
实施例
实施例1:
一种空心玻璃微珠填充环氧改性聚氨酯的制备方法为:
(1) 空心玻璃微珠的预处理:取干燥后的空心玻璃微珠加入到质量比为1:6的硅烷偶联剂KH-550与无水乙醇的混合溶液中,于70℃水浴中充分搅拌1h,进行减压抽滤去除溶剂,烘干备用;
(2) 环氧改性聚氨酯乳液的制备:以TDI、GE-210、BDO、DMPA、E-128为原料制备预聚体,降温至40℃,加入三乙胺进行中和反应生成盐,反应3-4min,加入水进行乳化60min,得到环氧改性聚氨酯乳液;其中预聚体原料的配比为:TDI与GE-210、DMPA、BDO、E-128的摩尔比为1.2:1,BDO占预聚体质量的2%,DMPA占预聚体质量的4%,E-128占预聚体质量的5%;三乙胺的物质的量与DMPA的物质的量相同;水的用量为预聚体总质量的2倍;
(3) 空心玻璃微珠填充环氧改性聚氨酯复合材料的制备:在上述环氧改性聚氨酯乳液中加入固化剂,于70℃下充分搅拌混合后,进行真空脱泡,加入经硅烷偶联剂处理的空心玻璃微珠,加入量为乳液质量的40%,充分搅拌混合后,进行模压成型,得到空心玻璃微珠填充的环氧改性聚氨酯复合材料。
实施例2:
一种空心玻璃微珠填充环氧改性聚氨酯的制备方法为:
(1) 空心玻璃微珠的预处理:取干燥后的空心玻璃微珠加入到质量比为1:7的硅烷偶联剂KH-550与无水乙醇的混合溶液中,于70℃水浴中充分搅拌1h,进行减压抽滤去除溶剂,烘干备用;
(2) 环氧改性聚氨酯乳液的制备:以TDI、GE-210、BDO、DMPA、E-128为原料制备预聚体,降温至40℃,加入三乙胺进行中和反应生成盐,反应3-4min,加入水进行乳化60min,得到环氧改性聚氨酯乳液;其中预聚体原料的配比为:TDI与GE-210、DMPA、BDO、E-128的摩尔比为1.2:1,BDO占预聚体质量的2%,DMPA占预聚体质量的4%,E-128占预聚体质量的5%;三乙胺的物质的量与DMPA的物质的量相同;水的用量为预聚体总质量的2倍;
(3) 空心玻璃微珠填充环氧改性聚氨酯复合材料的制备:在上述环氧改性聚氨酯乳液中加入固化剂,于70℃下充分搅拌混合后,进行真空脱泡,加入经硅烷偶联剂处理的空心玻璃微珠,加入量为乳液质量的45%,充分搅拌混合后,进行模压成型,得到空心玻璃微珠填充的环氧改性聚氨酯复合材料。
实施例3:
一种空心玻璃微珠填充环氧改性聚氨酯的制备方法为:
(1) 空心玻璃微珠的预处理:取干燥后的空心玻璃微珠加入到质量比为1:8的硅烷偶联剂KH-550与无水乙醇的混合溶液中,于70℃水浴中充分搅拌1h,进行减压抽滤去除溶剂,烘干备用;
(2) 环氧改性聚氨酯乳液的制备:以TDI、GE-210、BDO、DMPA、E-128为原料制备预聚体,降温至40℃,加入三乙胺进行中和反应生成盐,反应3-4min,加入水进行乳化60min,得到环氧改性聚氨酯乳液;其中预聚体原料的配比为:TDI与GE-210、DMPA、BDO、E-128的摩尔比为1.3:1,BDO占预聚体质量的3%,DMPA占预聚体质量的5%,E-128占预聚体质量的6%;三乙胺的物质的量与DMPA的物质的量相同;水的用量为预聚体总质量的2倍;
(3) 空心玻璃微珠填充环氧改性聚氨酯复合材料的制备:在上述环氧改性聚氨酯乳液中加入固化剂,于70℃下充分搅拌混合后,进行真空脱泡,加入经硅烷偶联剂处理的空心玻璃微珠,加入量为乳液质量的50%,充分搅拌混合后,进行模压成型,得到空心玻璃微珠填充的环氧改性聚氨酯复合材料。
Claims (6)
1.一种空心玻璃微珠填充环氧改性聚氨酯的制备方法,其特征在于:制备方法为:
(1) 空心玻璃微珠的预处理:取干燥后的空心玻璃微珠加入到硅烷偶联剂KH-550与无水乙醇的混合溶液中,于70℃水浴中充分搅拌1h,进行减压抽滤去除溶剂,烘干备用;
(2) 环氧改性聚氨酯乳液的制备:以TDI、GE-210、BDO、DMPA、E-128为原料制备预聚体,降温至40℃,加入三乙胺进行中和反应生成盐,反应3-4min,加入水进行乳化60min,得到环氧改性聚氨酯乳液;
(3) 空心玻璃微珠填充环氧改性聚氨酯复合材料的制备:在上述环氧改性聚氨酯乳液中加入固化剂,于70℃下充分搅拌混合后,进行真空脱泡,加入经硅烷偶联剂处理的空心玻璃微珠,充分搅拌混合后,进行模压成型,得到空心玻璃微珠填充的环氧改性聚氨酯复合材料。
2.如权利要求1所述的一种空心玻璃微珠填充环氧改性聚氨酯的制备方法,其特征在于:所述的步骤(1)中硅烷偶联剂KH-550与无水乙醇的质量比为1:6-1:8。
3. 如权利要求1所述的一种空心玻璃微珠填充环氧改性聚氨酯的制备方法,其特征在于:所述的步骤(2)中预聚体原料的配比为:TDI与GE-210、DMPA、BDO、E-128的摩尔比为1.2:1-1.3:1,BDO占预聚体质量的2%-3%,DMPA占预聚体质量的4%-5%,E-128占预聚体质量的5%-6%。
4.如权利要求1所述的一种空心玻璃微珠填充环氧改性聚氨酯的制备方法,其特征在于:所述的步骤(2)中三乙胺的物质的量与DMPA的物质的量相同。
5.如权利要求1所述的一种空心玻璃微珠填充环氧改性聚氨酯的制备方法,其特征在于:所述的步骤(2)中水的用量为预聚体总质量的2倍。
6. 如权利要求1所述的一种空心玻璃微珠填充环氧改性聚氨酯的制备方法,其特征在于:所述的步骤(3)中空心玻璃微珠的加入量为环氧改性聚氨酯乳液质量的40-50%。
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CN104311774A (zh) * | 2014-09-23 | 2015-01-28 | 李本明 | 一种空心微珠填充环氧自交联改性聚氨酯的制备方法 |
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CN106349877B (zh) * | 2016-08-31 | 2018-10-02 | 沈阳顺风新材料有限公司 | 一种道路标线贴片及其制备方法 |
CN109367039A (zh) * | 2018-09-29 | 2019-02-22 | 中国海洋石油集团有限公司 | 一种在聚醚多元醇中混合玻璃微珠的现场预处理装置 |
CN109367039B (zh) * | 2018-09-29 | 2020-10-16 | 中国海洋石油集团有限公司 | 一种在聚醚多元醇中混合玻璃微珠的现场预处理装置 |
CN110408238A (zh) * | 2019-08-09 | 2019-11-05 | 山西海诺科技股份有限公司 | 一种用于制备轻质环氧树脂-聚氨酯复合材料的空心玻璃微珠的改性方法 |
CN110655777A (zh) * | 2019-10-16 | 2020-01-07 | 郭建中 | 一种聚氨酯-纳米Al2O3复合包覆型空心玻璃微球 |
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CN114957920A (zh) * | 2022-06-20 | 2022-08-30 | 安徽众博新材料有限公司 | 一种低密度环氧树脂浮力材料的制备方法 |
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