CN106432673A - 一种环氧化端羟基聚丁二烯型聚氨酯材料极其制备方法 - Google Patents
一种环氧化端羟基聚丁二烯型聚氨酯材料极其制备方法 Download PDFInfo
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Abstract
本发明提供环氧化端羟基聚丁二烯型聚氨酯材料,包含如下重量份数的原料:环氧化端羟基聚丁二烯:62.5%‑74.5%,N,N‑二(2‑羟丙基)苯胺:4.5%‑10.5%,甲苯二异氰酸酯:13.0%‑19.5%,ZnO:3.0%‑5.0%,SiO2:1.0%‑1.8%,辛酸亚锡:0.01%‑0.12%,邻苯二甲酸二(2‑乙基己)酯:1.0%‑2.0%。同时,本发明还提供所述环氧化端羟基聚丁二烯型聚氨酯材料的制备方法,工艺简单,制备得到的环氧化端羟基聚丁二烯型聚氨酯材料力学性能优异,拉伸强度可达11.1MPa,断裂伸长率可达346.8%。
Description
技术领域
本发明属于复合材料的制备领域,具体涉及一种环氧化端羟基聚丁二烯型聚氨酯材料的制备方法。
背景技术
端羟基聚丁二烯(HTPB)是一种遥爪聚合物,常被人们称为液体橡胶。作为粘合剂,主要用于固体火箭推进剂和衬层材料。HTPB与扩链剂、固化剂发生交联固化反应,可生成三维网络结构的聚氨酯弹性体,具有优异的力学性能和良好的耐水解、耐酸碱、耐磨、耐低温、电绝缘性能及生物相容性。因此,广泛用于复合材料、固体推进剂、含能材料、粘合剂、密封件、蒸发分离膜、涂层材料和生物医用材料。
在冬季低湿度环境下,推进剂衬层材料常出现表面脱粘、力学性能偏低的现象。据统计,国外发生故障的固体发动机中有近三分之一是因衬层/药柱接口脱粘造成的。因此,对其进行改性十分必要。
发明内容
本发明提供一种环氧化端羟基聚丁二烯型聚氨酯材料,力学性能优异,同时提供该材料的制备方法。
一种环氧化端羟基聚丁二烯型聚氨酯材料,其特征在于,包含如下重量份数的原料:环氧化端羟基聚丁二烯:62.5%-74.5%,N,N-二(2-羟丙基)苯胺:4.5%-10.5%,甲苯二异氰酸酯:13.0%-19.5%,ZnO:3.0%-5.0%,SiO2:1.0%-1.8%,辛酸亚锡:0.01%-0.12%,邻苯二甲酸二(2-乙基己)酯:1.0%-2.0%。
优选地,上述一种环氧化端羟基聚丁二烯型聚氨酯材料包含如下重量份数的原料:环氧化端羟基聚丁二烯:68.2%,N,N-二(2-羟丙基)苯胺:10%,甲苯二异氰酸酯:15%,ZnO:4%,SiO2:1.2%,辛酸亚锡:0.1%,邻苯二甲酸二(2-乙基己)酯:1.5%。
本发明提供的环氧化端羟基聚丁二烯型聚氨酯材料的制备方法,其特征在于:包括以下步骤:
(1)称取N,N-二(2-羟丙基)苯胺,加乙酸乙酯溶解,再加入环氧化端羟基聚丁二烯后,加入ZnO、SiO2、辛酸亚锡和邻苯二甲酸二(2-乙基己)酯,搅拌均匀得到白色乳状液体;
(2)将步骤(1)得到的白色乳状液体,进行超声分散,在70℃下加热2-3h,冷却后,抽真空至无气泡产生,加入甲苯二异氰酸酯,混合均匀,再抽真空至无气泡产生;
(3)将步骤(2)得到的产物浇注入模具中,固化后得到环氧化端羟基聚丁二烯型聚氨酯材料。
优选地,上述步骤(2)中超声分散的条件为:功率200W,超声时间30min。
本发明的优点:
本发明提供一种环氧化端羟基聚丁二烯型聚氨酯材料及其制备方法,工艺简单,所述环氧化端羟基聚丁二烯型聚氨酯材料力学性能优异,拉伸强度可达11.1MPa,断裂伸长率可达346.8%。
具体实施方式
实施例1
一种环氧化端羟基聚丁二烯型聚氨酯材料,包含如下重量份数的原料:环氧化端羟基聚丁二烯:62.5%-74.5%,N,N-二(2-羟丙基)苯胺:4.5%-10.5%,甲苯二异氰酸酯:13.0%-19.5%,ZnO:3.0%-5.0%,SiO2:1.0%-1.8%,辛酸亚锡:0.01%-0.12%,邻苯二甲酸二(2-乙基己)酯:1.0%-2.0%。
一种上述环氧化端羟基聚丁二烯型聚氨酯材料的制备方法如下:
(1)称取N,N-二(2-羟丙基)苯胺,加乙酸乙酯溶解,再加入环氧化端羟基聚丁二烯后,加入ZnO、SiO2、辛酸亚锡和邻苯二甲酸二(2-乙基己)酯,搅拌均匀得到白色乳状液体;
(2)将步骤(1)得到的白色乳状液体,进行超声分散,在70℃下加热2-3h,冷却后,抽真空至无气泡产生,加入甲苯二异氰酸酯,混合均匀,再抽真空至无气泡产生;
(3)将步骤(2)得到的产物浇注入模具中,固化后得到环氧化端羟基聚丁二烯型聚氨酯材料。
其中,步骤(2)中,超声分散的条件为:功率200W,超声时间30min。
实施例2
一种环氧化端羟基聚丁二烯型聚氨酯材料,包含如下重量份数的原料:环氧化端羟基聚丁二烯:68.2%,N,N-二(2-羟丙基)苯胺:10%,甲苯二异氰酸酯:15%,ZnO:4%,SiO2:1.2%,辛酸亚锡:0.1%,邻苯二甲酸二(2-乙基己)酯:1.5%。
该环氧化端羟基聚丁二烯型聚氨酯材料的制备方法同实施例1。
Claims (4)
1.一种环氧化端羟基聚丁二烯型聚氨酯材料,其特征在于,包含如下重量份数的原料:环氧化端羟基聚丁二烯:62.5%-74.5%,N,N-二(2-羟丙基)苯胺:4.5%-10.5%,甲苯二异氰酸酯:13.0%-19.5%,ZnO:3.0%-5.0%,SiO2:1.0%-1.8%,辛酸亚锡:0.01%-0.12%,邻苯二甲酸二(2-乙基己)酯:1.0%-2.0%。
2.根据权利要求1所述的一种环氧化端羟基聚丁二烯型聚氨酯材料,其特征在于:包含如下重量份数的原料:环氧化端羟基聚丁二烯:68.2%,N,N-二(2-羟丙基)苯胺:10%,甲苯二异氰酸酯:15%,ZnO:4%,SiO2:1.2%,辛酸亚锡:0.1%,邻苯二甲酸二(2-乙基己)酯:1.5%。
3.一种权利要求1或2所述的环氧化端羟基聚丁二烯型聚氨酯材料的制备方法,其特征在于:包括以下步骤:
(1)称取N,N-二(2-羟丙基)苯胺,加乙酸乙酯溶解,再加入环氧化端羟基聚丁二烯后,加入ZnO、SiO2、辛酸亚锡和邻苯二甲酸二(2-乙基己)酯,搅拌均匀得到白色乳状液体;
(2)将步骤(1)得到的白色乳状液体,进行超声分散,在70℃下加热2-3h,冷却后,抽真空至无气泡产生,加入甲苯二异氰酸酯,混合均匀,再抽真空至无气泡产生;
(3)将步骤(2)得到的产物浇注入模具中,固化后得到环氧化端羟基聚丁二烯型聚氨酯材料。
4.根据权利要求3所述的环氧化端羟基聚丁二烯型聚氨酯材料的制备方法,其特征在于:步骤(2)中超声分散的条件为:功率200W,超声时间30min。
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CN108753217A (zh) * | 2018-06-26 | 2018-11-06 | 西安近代化学研究所 | 一种复合推进剂用衬层 |
CN108864694A (zh) * | 2018-06-27 | 2018-11-23 | 滁州环球聚氨酯科技有限公司 | 一种耐热性的聚氨酯复合材料的制备方法 |
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CN108753217A (zh) * | 2018-06-26 | 2018-11-06 | 西安近代化学研究所 | 一种复合推进剂用衬层 |
CN108864694A (zh) * | 2018-06-27 | 2018-11-23 | 滁州环球聚氨酯科技有限公司 | 一种耐热性的聚氨酯复合材料的制备方法 |
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