CN117511489A - 一种聚醚改性的异氰酸酯胶合剂及其制备工艺 - Google Patents
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Abstract
本发明公开的是一种聚醚改性的异氰酸酯胶合剂,由以下重量份数的原料组分:聚醚多元醇60‑80份;多异氰酸酯5‑10份;三甘油酯2‑5份;纳米碳酸钙5‑10份;二氧化硅2‑5份。本方案还同时披露了该胶合剂的制备工艺。本发明通过三甘油酯中含有羟基化合物,并与异氰酸酯基团相反应,从而改性异氰酸酯,增加其使黏合性能和耐热性能;同时通过对异氰酸酯胶黏剂的改性填充,不仅有效地提高胶合剂的固化速度和固化强度,而且进一步地改善其韧性和抗水性能。
Description
技术领域
本发明涉及的是异氰酸酯胶合剂的生产技术领域,更具体地说是一种聚醚改性的异氰酸酯胶合剂及其制备工艺。
背景技术
多异氰酸酯有多种改性方法,由此得到许多种类的异氰酸酯衍生物,如以二异氰酸酯三聚体为主的异氰酸酯均聚物、多元醇加成物、缩二脲、封闭型异氰酸酯,这些衍生物多用于双组份胶黏剂或涂料的固化剂,且除部分HDI衍生物为液态,其它多为固态,使用不方便,溶剂稀释后不适用于环保型的水性或无溶剂体系,且带来环境污染和健康危害。
中国专利:一种改性的多异氰酸酯组合物及其制备方法,授权公告号:CN107304244B,该专利采用带有特殊功能官能团的一元醇改性多异氰酸酯,制备有一定脲基甲酸酯含量的多异氰酸酯组合物,使用该多异氰酸酯组合物制备的聚氨酯树脂可表现出该一元醇的特殊功能性,同时增加聚氨酯树脂的回弹性,还具有高疏水性、光固化性等特点。
本技术方案是在现有技术的基础上,对多异氰酸酯衍生物用于组份胶黏剂进行进一步地研究和开发,通过三甘油酯中含有羟基化合物,并与异氰酸酯基团相反应,从而改性异氰酸酯,增加其使黏合性能和耐热性能;同时通过对异氰酸酯胶黏剂的改性填充,不仅有效地提高其固化速度和固化强度,而且进一步地改善其韧性和抗水性能。
发明内容
本发明公开的是一种聚醚改性的异氰酸酯胶合剂及其制备工艺,其主要目的在于克服现有技术存在的上述不足和缺点。
本发明采用的技术方案如下:
一种聚醚改性的异氰酸酯胶合剂,由以下重量份数的原料组分:
更进一步,所述聚醚多元醇为聚氧化乙烯多元醇。
更进一步,所述异氰酸酯为二异氰酸酯。
一种聚醚改性的异氰酸酯胶合剂制备工艺,所述制备工艺包括以下具体步骤:
步骤一:将聚醚多元醇和多异氰酸酯同时加入到反应釜中,在加热的条件下进行反应,加热温度在30-60℃,反应时间在2-3小时,反应的过程中需要同步搅拌,制得含有异氰酸酯基团的聚醚预聚物;
步骤二:继续往聚醚预聚物中加入三甘油酯,将反应温度控制在25-50℃,反应1-2小时,反应过程需要搅拌均匀,得到预制胶合剂;
步骤三:继续往预制胶合剂中加入纳米碳酸钙和二氧化硅,在常温常压下,持续搅拌均匀,得到改性的异氰酸酯胶合剂。
更进一步,所述聚醚多元醇的数均分子量为6000-12000。
更进一步,所述异氰酸酯为二异氰酸酯,该二异氰酸酯包括甲苯二异氰酸酯、二苯基甲烷二异氰酸酯、异佛尔酮二异氰酸酯中的一种或多种。
通过上述对本发明的描述可知,和现有技术相比,本发明的优点在于:
优点一:本发明通过三甘油酯与异氰酸酯进行改性反应,通过三甘油酯中含有羟基化合物,并与异氰酸酯基团相反应,从而改性异氰酸酯,增加其使黏合性能和耐热性能。
优点二:本发明通过使用纳米碳酸钙和二氧化硅的改性填充使用,改变了异氰酸酯的物理特性,不仅有效地提高其固化速度和固化强度,而且进一步地改善其韧性和抗水性能。
具体实施方式
下面通过具体实施例来进一步地说明本方案。
实施例一
一种聚醚改性的异氰酸酯胶合剂制备工艺,其特征在于:所述制备工艺包括以下具体步骤:
步骤一:将60份聚醚多元醇和5份多异氰酸酯同时加入到反应釜中,所述聚醚多元醇为聚氧化乙烯多元醇,该聚醚多元醇的数均分子量为6000-12000,所述异氰酸酯为二异氰酸酯,该二异氰酸酯包括甲苯二异氰酸酯、二苯基甲烷二异氰酸酯、异佛尔酮二异氰酸酯中的一种或多种,在加热的条件下进行反应,加热温度在30-60℃,反应时间在2-3小时,反应的过程中需要同步搅拌,制得含有异氰酸酯基团的聚醚预聚物;
步骤二:继续往聚醚预聚物中加入2份三甘油酯,将反应温度控制在25-50℃,反应1-2小时,反应过程需要搅拌均匀,得到预制胶合剂;
步骤三:继续往预制胶合剂中加入5份纳米碳酸钙和2份二氧化硅,在常温常压下,持续搅拌均匀,得到改性的异氰酸酯胶合剂。
实施例二
一种聚醚改性的异氰酸酯胶合剂制备工艺,其特征在于:所述制备工艺包括以下具体步骤:
步骤一:将70份聚醚多元醇和7份多异氰酸酯同时加入到反应釜中,所述聚醚多元醇为聚氧化乙烯多元醇,该聚醚多元醇的数均分子量为6000-12000,所述异氰酸酯为二异氰酸酯,该二异氰酸酯包括甲苯二异氰酸酯、二苯基甲烷二异氰酸酯、异佛尔酮二异氰酸酯中的一种或多种,在加热的条件下进行反应,加热温度在30-60℃,反应时间在2-3小时,反应的过程中需要同步搅拌,制得含有异氰酸酯基团的聚醚预聚物;
步骤二:继续往聚醚预聚物中加入3份三甘油酯,将反应温度控制在25-50℃,反应1-2小时,反应过程需要搅拌均匀,得到预制胶合剂;
步骤三:继续往预制胶合剂中加入7份纳米碳酸钙和3份二氧化硅,在常温常压下,持续搅拌均匀,得到改性的异氰酸酯胶合剂。
实施例三
一种聚醚改性的异氰酸酯胶合剂制备工艺,其特征在于:所述制备工艺包括以下具体步骤:
步骤一:将80份聚醚多元醇和10份多异氰酸酯同时加入到反应釜中,所述聚醚多元醇为聚氧化乙烯多元醇,该聚醚多元醇的数均分子量为6000-12000,所述异氰酸酯为二异氰酸酯,该二异氰酸酯包括甲苯二异氰酸酯、二苯基甲烷二异氰酸酯、异佛尔酮二异氰酸酯中的一种或多种,在加热的条件下进行反应,加热温度在30-60℃,反应时间在2-3小时,反应的过程中需要同步搅拌,制得含有异氰酸酯基团的聚醚预聚物;
步骤二:继续往聚醚预聚物中加入5份三甘油酯,将反应温度控制在25-50℃,反应1-2小时,反应过程需要搅拌均匀,得到预制胶合剂;
步骤三:继续往预制胶合剂中加入10份纳米碳酸钙和5份二氧化硅,在常温常压下,持续搅拌均匀,得到改性的异氰酸酯胶合剂。
将实施例1至3制备得到的异氰酸酯胶合剂与现有市场上常规使用的异氰酸酯胶合剂分别进行性能测试,其测试结果如下表所示:
本发明通过三甘油酯中含有羟基化合物,并与异氰酸酯基团相反应,从而改性异氰酸酯,增加其使黏合性能和耐热性能;同时通过对异氰酸酯胶黏剂的改性填充,不仅有效地提高其固化速度和固化强度,而且进一步地改善其韧性和抗水性能。
上述仅为本发明的具体实施方式,但本发明的设计构思并不仅局限于此,凡是利用此构思对本发明进行非实质性地改进,均应该属于侵犯本发明保护范围的行为。
Claims (6)
1.一种聚醚改性的异氰酸酯胶合剂,其特征在于:由以下重量份数的原料组分:
聚醚多元醇60-80份;
多异氰酸酯5-10份;
三甘油酯2-5份;
纳米碳酸钙5-10份;
二氧化硅2-5份。
2.根据权利要求1所述的一种聚醚改性的异氰酸酯胶合剂,其特征在于:所述聚醚多元醇为聚氧化乙烯多元醇。
3.根据权利要求1所述的一种聚醚改性的异氰酸酯胶合剂,其特征在于:所述异氰酸酯为二异氰酸酯。
4.一种聚醚改性的异氰酸酯胶合剂制备工艺,其特征在于:所述制备工艺包括以下具体步骤:
步骤一:将聚醚多元醇和多异氰酸酯同时加入到反应釜中,在加热的条件下进行反应,加热温度在30-60℃,反应时间在2-3小时,反应的过程中需要同步搅拌,制得含有异氰酸酯基团的聚醚预聚物;
步骤二:继续往聚醚预聚物中加入三甘油酯,将反应温度控制在25-50℃,反应1-2小时,反应过程需要搅拌均匀,得到预制胶合剂;
步骤三:继续往预制胶合剂中加入纳米碳酸钙和二氧化硅,在常温常压下,持续搅拌均匀,得到改性的异氰酸酯胶合剂。
5.根据权利要求4所述的一种聚醚改性的异氰酸酯胶合剂制备工艺,其特征在于:所述聚醚多元醇的数均分子量为6000-12000。
6.根据权利要求4所述的一种聚醚改性的异氰酸酯胶合剂制备工艺,其特征在于:所述异氰酸酯为二异氰酸酯,该二异氰酸酯包括甲苯二异氰酸酯、二苯基甲烷二异氰酸酯、异佛尔酮二异氰酸酯中的一种或多种。
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