CN105273164B - 聚氨酯再生海绵用发泡胶及其制备方法 - Google Patents
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Abstract
本发明属于聚氨酯技术领域,具体涉及一种聚氨酯再生海绵用发泡胶及其制备方法。聚氨酯再生海绵用发泡胶由A组分和B组分组成,以重量份数计,A组分:聚醚多元醇60‑90份、多异氰酸酯10‑30份;B组分:聚醚多元醇20‑60份、水0.1‑2份、二氯甲烷2‑8份、聚氨酯延迟催化剂C‑225 1‑4份。本发明制备的产品使用时进行微孔发泡,极大降低了传统海绵的颗粒感和扎刺感;具有舒适性和较高的粘接强度,极大的扩展了再生海绵的使用范围;制备方法简单易实施。
Description
技术领域
本发明属于聚氨酯技术领域,具体涉及一种聚氨酯再生海绵用发泡胶及其制备方法。
背景技术
随着生活水平的提高,越来越多的废旧家具被淘汰,其中有大量废旧海绵未能重新回收利用,每年浪费的废旧海绵理论上约小于每年海绵生产总量,加之海绵厂家边角料,所以再生海绵市场很大。现用于再生海绵市场的海绵胶水多为多用途胶水,具有粘度大、粘接强度低、再生海绵手感较差等缺点。
发明内容
本发明的目的是提供一种聚氨酯再生海绵用发泡胶,舒适性高、粘接强度较高;本发明同时提供了聚氨酯再生海绵用发泡胶的制备方法,科学合理、简单易行。
本发明所述的聚氨酯再生海绵用发泡胶,由A组分和B组分组成,以重量份数计,
A组分:
聚醚多元醇 60-90份
多异氰酸酯 10-30份;
B组分:
所述的A组分中聚醚多元醇为DDL-2000D和DDL-3000D的混合物,DDL-2000D和DDL-3000D的质量比为1:2-2:1。DDL-2000D是淄博德信联邦化工有限公司生产,分子量为2000,官能度为2;DDL-3000D是淄博德信联邦化工有限公司生产,分子量为3000,官能度为2;该两种聚醚多元醇配合使用制得产品硬度较小,拉伸强度较小。
所述的A组分中多异氰酸酯为TDI-80,烟台万华生产。
所述的B组分中聚醚多元醇为DEP-560D,淄博德信联邦化工有限公司生产,分子量为3000,官能度为3。该种聚醚多元醇成本较低,发泡性能稳定。
所述的聚氨酯延迟催化剂C-225,上海晔兴实业有限公司提供。
本发明所述的聚氨酯再生海绵用发泡胶的制备方法,步骤如下:
(1)A组分的制备:将聚醚多元醇升温至110-120℃真空脱水2-2.5小时,降温至50℃以下加入多异氰酸酯,升温至80-85℃反应2-3小时后,得到预聚体,降温至50℃以下,密封备用;
(2)B组分的制备:将聚醚多元醇、聚氨酯延迟催化剂C-225、水和二氯甲烷混合搅拌20-30分钟密封备用;
(3)将A、B组分混合搅拌10-15秒后倒入再生海绵成型设备使其均匀涂抹于海绵表面进行粘接成型。
步骤(1)中所述的预聚体的NCO%为6-10%。
本发明克服了传统胶水固有的缺点,制作的再生海绵具有手感好、强度高、环保等优点。该产品极大的改变了传统再生海绵在消费者心中较为低端的现状,使再生海绵改善了传统海绵的颗粒感和扎刺感,极大的拓宽了再生海绵应用范围和用量。
本发明与现有技术相比,具有如下有益效果:
(1)本发明制备的产品使用时进行微孔发泡,极大降低了传统海绵的颗粒感和扎刺感;
(2)本发明提供的一种再生海绵用发泡胶兼具舒适性和较高的粘接强度,极大的扩展了再生海绵的使用范围;
(3)本发明的制备方法简单易实施。
具体实施方式
以下结合实施例对本发明做进一步描述。
实施例1
原料组成如下:
A组分:
聚醚多元醇DDL-2000D和DDL-3000D 60kg
多异氰酸酯TDI-80 10kg;
B组分:
制备方法如下:
(1)A组分的制备:将聚醚多元醇DDL-2000D和DDL-3000D升温至110℃真空脱水2小时,降温至50℃以下加入多异氰酸酯,升温至80℃反应2小时后,得到预聚体,预聚体的NCO%为6%,降温至50℃以下,密封备用;DDL-2000D和DDL-3000D的质量比为2:1;
(2)B组分的制备:将聚醚多元醇DEP-560D、聚氨酯延迟催化剂C-225、水和二氯甲烷混合搅拌20分钟密封备用;
(3)将A、B组分混合搅拌10秒后倒入再生海绵成型设备使其均匀涂抹于海绵表面进行粘接成型。
产品指标见表1。
表1实施例1产品指标
实施例2
原料组成如下:
A组分:
聚醚多元醇DDL-2000D和DDL-3000D 90kg
多异氰酸酯TDI-80 30kg;
B组分:
制备方法如下:
(1)A组分的制备:将聚醚多元醇DDL-2000D和DDL-3000D升温至120℃真空脱水2.5小时,降温至50℃以下加入多异氰酸酯,升温至85℃反应3小时后,得到预聚体,预聚体的NCO%为10%,降温至50℃以下,密封备用;DDL-2000D和DDL-3000D的质量比为1:2;
(2)B组分的制备:将聚醚多元醇DEP-560D、聚氨酯延迟催化剂C-225、水和二氯甲烷混合搅拌30分钟密封备用;
(3)将A、B组分混合搅拌15秒后倒入再生海绵成型设备使其均匀涂抹于海绵表面进行粘接成型。
产品指标见表2。
表2实施例2产品指标
实施例3
原料组成如下:
A组分:
聚醚多元醇DDL-2000D和DDL-3000D 80kg
多异氰酸酯TDI-80 20kg;
B组分:
制备方法如下:
(1)A组分的制备:将聚醚多元醇DDL-2000D和DDL-3000D升温至115℃真空脱水2.3小时,降温至50℃以下加入多异氰酸酯,升温至82℃反应2.5小时后,得到预聚体,预聚体的NCO%为8%,降温至50℃以下,密封备用;DDL-2000D和DDL-3000D的质量比为1:1;
(2)B组分的制备:将聚醚多元醇DEP-560D、聚氨酯延迟催化剂C-225、水和二氯甲烷混合搅拌25分钟密封备用;
(3)将A、B组分混合搅拌12秒后倒入再生海绵成型设备使其均匀涂抹于海绵表面进行粘接成型。
产品指标见表3。
表3实施例3产品指标
Claims (4)
1.一种聚氨酯再生海绵用发泡胶,其特征在于由A组分和B组分组成,以重量份数计,
A组分:
聚醚多元醇 60-90份
多异氰酸酯 10-30份;
B组分:
所述的A组分中聚醚多元醇为DDL-2000D和DDL-3000D的混合物,DDL-2000D和DDL-3000D的质量比为1:2-2:1;
所述的B组分中聚醚多元醇为DEP-560D。
2.根据权利要求1所述的聚氨酯再生海绵用发泡胶,其特征在于所述的A组分中多异氰酸酯为TDI-80。
3.一种权利要求1或2所述的聚氨酯再生海绵用发泡胶的制备方法,其特征在于步骤如下:
(1)A组分的制备:将聚醚多元醇升温至110-120℃真空脱水2-2.5小时,降温至50℃以下加入多异氰酸酯,升温至80-85℃反应2-3小时后,得到预聚体,降温至50℃以下,密封备用;
(2)B组分的制备:将聚醚多元醇、聚氨酯延迟催化剂C-225、水和二氯甲烷混合搅拌20-30分钟密封备用;
(3)将A、B组分混合搅拌10-15秒后倒入再生海绵成型设备使其均匀涂抹于海绵表面进行粘接成型。
4.根据权利要求3所述的聚氨酯再生海绵用发泡胶的制备方法,其特征在于步骤(1)中所述的预聚体的NCO%为6-10%。
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