CN106753186A - 一种环保型水性胶粘剂及其制备方法 - Google Patents
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Abstract
本发明涉及水性胶粘剂领域,具体涉及一种环保型水性胶粘剂及其制备方法,所述环保型水性胶粘剂由以下重量份的原料制成:聚酯多元醇25‑35份、蓖麻油15‑20份、二异氰酸酯18‑25份、木质素5‑8份、扩链剂8‑12份、3‑氨基丙基三乙氧基硅烷1.5‑2.5份、二月桂酸二丁基锡0.25‑0.5份、三亚乙基二胺0.25‑0.5份、增塑剂3‑5份、增稠剂0.5‑0.8份、流平剂0.5‑1份、防老剂0.4‑0.8份、去离子水65‑85份,本发明环保型水性胶粘剂安全环保,采用木质素对胶粘剂进行改性,可有效提高胶粘剂的室温剪切强度及耐老化性,加入的蓖麻油可有效提高了胶粘剂的耐水性,而木质素和蓖麻油作为可再生资源,均具有可降解、无毒等优点,完全符合环保要求,本发明制备方法简单易行,最终制备得到的胶粘剂具有优异的综合性能。
Description
技术领域
本发明涉及水性胶粘剂领域,具体涉及一种环保型水性胶粘剂及其制备方法。
背景技术
胶粘剂作为一种国民经济发展不可或缺的化工产品,广泛应用于国民经济中的各个领域,我国现已成为胶粘剂的生产大国和消费大国。胶粘剂品种繁多、组分各异,其中,聚氨酯胶粘剂作为合成胶粘剂中的重要品种,以其优良的粘结性能、对多种基材的粘结适应性、简便的粘结工艺、极佳的耐低温性能以及优良的稳定性等优点,已成为近年来在国内发展最快的胶粘剂。
聚氨酯胶黏剂多以溶剂型为主,溶剂一般是丙酮、丁酮、甲苯、乙酸乙酯、二甲基甲酰胺等挥发性有机溶剂。这些溶剂有毒、易燃、易爆、易挥发,产品中的大量溶剂会对人体和生态环境造成伤害。近年来,欧美各国关于化工产品中有机物挥发标准日趋严格,因此促进了新一代彻底环保型聚氨酯类胶粘剂的出现。水性聚氨酯胶粘剂是指以水代替有机溶剂作为分散介质,体系中不含或含有微量的有机溶剂的聚氨酯胶粘剂。其与溶剂型聚氨酯胶黏剂相比,具有无毒、不燃、气味小、节能环保、操作方便等优点,因此越来越受到人们的重视,是聚氨酯胶粘剂的重点发展方向。但是此种胶黏剂的耐水性、耐老化性及机械强度仍需做进一步提高。
发明内容
本发明提供了一种环保型水性胶粘剂及其制备方法,所述环保型水性胶粘剂安全环保,体系稳定,具有优异的耐水性、耐老化性及机械性能。
为实现以上目的,本发明通过以下技术方案予以实现:
一种环保型水性胶粘剂,由以下重量份的原料制成:聚酯多元醇25-35份、蓖麻油15-20份、二异氰酸酯18-25份、木质素5-8份、扩链剂8-12份、3-氨基丙基三乙氧基硅烷1.5-2.5份、二月桂酸二丁基锡0.25-0.5份、三亚乙基二胺0.25-0.5份、增塑剂3-5份、增稠剂0.5-0.8份、流平剂0.5-1份、防老剂0.4-0.8份、去离子水65-85份。
优选地,所述环保型水性胶粘剂由以下重量份的原料制成:聚酯多元醇30份、蓖麻油18份、二异氰酸酯22份、木质素6份、扩链剂10份、3-氨基丙基三乙氧基硅烷2份、二月桂酸二丁基锡0.4份、三亚乙基二胺0.4份、增塑剂4份、增稠剂0.6份、流平剂0.8份、防老剂0.6份、去离子水70份。
优选地,所述聚酯多元醇的分子量为2000-3000。
优选地,所述二异氰酸酯为甲苯二异氰酸酯或异佛尔酮二异氰酸酯。
优选地,所述扩链剂为1,4-丁二醇、1,6-己二醇、新戊二醇、山梨醇中的一种。
优选地,所述增塑剂为邻苯二甲酸二丁酯或邻苯二甲酸二辛酯。
优选地,所述流平剂为丙烯酸酯型流平剂或有机硅型流平剂。
环保型水性胶粘剂的制备方法,包括以下步骤:按比例称取各原料,将聚酯多元醇、蓖麻油、木质素、扩链剂置于密闭容器中,90-110℃下真空干燥1h,冷却至70-80℃,加入二月桂酸二丁基锡及三亚乙基二胺,混合搅拌30min,得混合料;将混合料加入等重量丙酮进行溶解,之后加入二异氰酸酯及3-氨基丙基三乙氧基硅烷,体系通入氮气保护,在80-90℃下预聚2-3h后,降温至50-60℃,加入增塑剂、流平剂、防老剂,混合搅拌20-30min,加去离子水分散后脱溶剂,加入增稠剂,最后进行真空脱泡,得所述环保型水性胶粘剂。
本发明的有益效果为:
1.本发明环保型水性胶粘剂中无有机溶剂,避免了有机溶剂对人体和生态环境造成危害,使用时安全环保。
2.本发明采用木质素对胶粘剂进行改性,并采用二月桂酸二丁基锡和三亚乙基二胺作为催化剂,可有效提高胶粘剂的室温剪切强度及耐老化性,加入的蓖麻油具有疏水性结构,可有效提高胶粘剂的耐水性。同时,木质素、蓖麻油作为可再生资源,均具有可降解、无毒等优点,完全符合环保要求。
3.本发明环保型水性胶粘剂制备方法简单易行,使最终制备得到的胶粘剂体系稳定,具有优异的综合性能。
具体实施方式
下面结合具体实施例进一步说明本发明的技术解决方案,实施例不能理解为是对技术解决方案的限制。
实施例1:
一种环保型水性胶粘剂,由以下重量份的原料制成:聚酯多元醇30份、蓖麻油18份、甲苯二异氰酸酯22份、木质素6份、1,4-丁二醇10份、3-氨基丙基三乙氧基硅烷2份、二月桂酸二丁基锡0.4份、三亚乙基二胺0.4份、邻苯二甲酸二丁酯4份、增稠剂0.6份、丙烯酸酯型流平剂0.8份、防老剂0.6份、去离子水70份;所述聚酯多元醇的分子量为2000-3000。
环保型水性胶粘剂的制备方法,包括以下步骤:按比例称取各原料,将聚酯多元醇、蓖麻油、木质素、1,4-丁二醇置于密闭容器中,110℃下真空干燥1h,冷却至70℃,加入二月桂酸二丁基锡及三亚乙基二胺,混合搅拌30min,得混合料;将混合料加入等重量丙酮进行溶解,之后加入甲苯二异氰酸酯及3-氨基丙基三乙氧基硅烷,体系通入氮气保护,在90℃下预聚2h后,降温至60℃,加入邻苯二甲酸二丁酯、丙烯酸酯型流平剂、防老剂,混合搅拌20min,加去离子水分散后脱溶剂,加入增稠剂,最后进行真空脱泡,得所述环保型水性胶粘剂。
实施例2:
一种环保型水性胶粘剂,由以下重量份的原料制成:聚酯多元醇35份、蓖麻油15份、异佛尔酮二异氰酸酯25份、木质素5份、1,6-己二醇12份、3-氨基丙基三乙氧基硅烷1.5份、二月桂酸二丁基锡0.5份、三亚乙基二胺0.25份、邻苯二甲酸二辛酯5份、增稠剂0.5份、有机硅型流平剂1份、防老剂0.4份、去离子水85份。所述聚酯多元醇的分子量为2000-3000。
环保型水性胶粘剂的制备方法,包括以下步骤:按比例称取各原料,将聚酯多元醇、蓖麻油、木质素、1,6-己二醇置于密闭容器中,90℃下真空干燥1h,冷却至80℃,加入二月桂酸二丁基锡及三亚乙基二胺,混合搅拌30min,得混合料;将混合料加入等重量丙酮进行溶解,之后加入异佛尔酮二异氰酸酯及3-氨基丙基三乙氧基硅烷,体系通入氮气保护,在80℃下预聚3h后,降温至50℃,加入邻苯二甲酸二辛酯、有机硅型流平剂、防老剂,混合搅拌30min,加去离子水分散后脱溶剂,加入增稠剂,最后进行真空脱泡,得所述环保型水性胶粘剂。
实施例3:
一种环保型水性胶粘剂,由以下重量份的原料制成:聚酯多元醇25份、蓖麻油20份、甲苯二异氰酸酯18份、木质素8份、新戊二醇8份、3-氨基丙基三乙氧基硅烷2.5份、二月桂酸二丁基锡0.25份、三亚乙基二胺0.5份、邻苯二甲酸二丁酯3份、增稠剂0.8份、丙烯酸酯型流平剂0.5份、防老剂0.8份、去离子水65份。所述聚酯多元醇的分子量为2000-3000。
环保型水性胶粘剂的制备方法,包括以下步骤:按比例称取各原料,将聚酯多元醇、蓖麻油、木质素、新戊二醇置于密闭容器中,100℃下真空干燥1h,冷却至75℃,加入二月桂酸二丁基锡及三亚乙基二胺,混合搅拌30min,得混合料;将混合料加入等重量丙酮进行溶解,之后加入甲苯二异氰酸酯及3-氨基丙基三乙氧基硅烷,体系通入氮气保护,在85℃下预聚2.5h后,降温至55℃,加入邻苯二甲酸二丁酯、丙烯酸酯型流平剂、防老剂,混合搅拌25min,加去离子水分散后脱溶剂,加入增稠剂,最后进行真空脱泡,得所述环保型水性胶粘剂。
实施例4:
一种环保型水性胶粘剂,由以下重量份的原料制成:聚酯多元醇30份、蓖麻油18份、异佛尔酮二异氰酸酯25份、木质素5份、山梨醇10份、3-氨基丙基三乙氧基硅烷2份、二月桂酸二丁基锡0.3份、三亚乙基二胺0.5份、邻苯二甲酸二辛酯4份、增稠剂0.6份、有机硅型流平剂0.8份、防老剂0.8份、去离子水85份。
环保型水性胶粘剂的制备方法,包括以下步骤:按比例称取各原料,将聚酯多元醇、蓖麻油、木质素、山梨醇置于密闭容器中,110℃下真空干燥1h,冷却至80℃,加入二月桂酸二丁基锡及三亚乙基二胺,混合搅拌30min,得混合料;将混合料加入等重量丙酮进行溶解,之后加入异佛尔酮二异氰酸酯及3-氨基丙基三乙氧基硅烷,体系通入氮气保护,在80℃下预聚2h后,降温至60℃,加入邻苯二甲酸二辛酯、有机硅型流平剂、防老剂,混合搅拌30min,加去离子水分散后脱溶剂,加入增稠剂,最后进行真空脱泡,得所述环保型水性胶粘剂。
实施例5:
一种环保型水性胶粘剂,由以下重量份的原料制成:聚酯多元醇35份、蓖麻油20份、甲苯二异氰酸酯18份、木质素5份、1,4-丁二醇12份、3-氨基丙基三乙氧基硅烷2.5份、二月桂酸二丁基锡0.25份、三亚乙基二胺0.25份、邻苯二甲酸二丁酯5份、增稠剂0.8份、丙烯酸酯型流平剂0.5份、防老剂0.4份、去离子水75份。
环保型水性胶粘剂的制备方法同实施例1。
实施例6:
一种环保型水性胶粘剂,由以下重量份的原料制成:聚酯多元醇30份、蓖麻油20份、异佛尔酮二异氰酸酯20份、木质素8份、1,6-己二醇12份、3-氨基丙基三乙氧基硅烷1.5份、二月桂酸二丁基锡0.5份、三亚乙基二胺0.5份、邻苯二甲酸二辛酯5份、增稠剂0.8份、有机硅型流平剂0.8份、防老剂0.8份、去离子水65份。
环保型水性胶粘剂的制备方法同实施例2。
性能检测:
(1)耐水性能测试
分别将由实施例1-6环保型水性胶粘剂所制备的胶膜裁剪成2cm*2cm的小方块,分别称其初始质量均记为W0,放在水中浸泡24h,取出后擦净表面液体,称量,质量记为W1,计算胶膜在水中的吸水率。吸水率的大小反映了胶膜的耐水性能。
吸水率=(W1-W0)/W0*100%
经测试,实施例1-6中胶膜的吸水率如下表所示:
表1耐水性能测试结果
吸水率(%) | |
实施例1 | 10.02 |
实施例2 | 10.11 |
实施例3 | 10.08 |
实施例4 | 10.05 |
实施例5 | 10.13 |
实施例6 | 10.07 |
(2)胶膜力学性能测试
按国家标准GB/T1040-1992测量胶膜的拉伸强度、断裂伸长率,拉伸速率为100mm/min。
经测试,实施例1-6中环保型水性胶膜的拉伸强度及断裂伸长率如下表所示:
表2拉伸强度及断裂伸长率测试结果
Claims (8)
1.一种环保型水性胶粘剂,其特征在于,由以下重量份的原料制成:聚酯多元醇25-35份、蓖麻油15-20份、二异氰酸酯18-25份、木质素5-8份、扩链剂8-12份、3-氨基丙基三乙氧基硅烷1.5-2.5份、二月桂酸二丁基锡0.25-0.5份、三亚乙基二胺0.25-0.5份、增塑剂3-5份、增稠剂0.5-0.8份、流平剂0.5-1份、防老剂0.4-0.8份、去离子水65-85份。
2.根据权利要求1所述的环保型水性胶粘剂,其特征在于,由以下重量份的原料制成:聚酯多元醇30份、蓖麻油18份、二异氰酸酯22份、木质素6份、扩链剂10份、3-氨基丙基三乙氧基硅烷2份、二月桂酸二丁基锡0.4份、三亚乙基二胺0.4份、增塑剂4份、增稠剂0.6份、流平剂0.8份、防老剂0.6份、去离子水70份。
3.根据权利要求2所述的环保型水性胶粘剂,其特征在于,所述聚酯多元醇的分子量为2000-3000。
4.根据权利要求2所述的环保型水性胶粘剂,其特征在于,所述二异氰酸酯为甲苯二异氰酸酯或异佛尔酮二异氰酸酯。
5.根据权利要求2所述的环保型水性胶粘剂,其特征在于,所述扩链剂为1,4-丁二醇、1,6-己二醇、新戊二醇、山梨醇中的一种。
6.根据权利要求2所述的环保型水性胶粘剂,其特征在于,所述增塑剂为邻苯二甲酸二丁酯或邻苯二甲酸二辛酯。
7.根据权利要求2所述的环保型水性胶粘剂,其特征在于,所述流平剂为丙烯酸酯型流平剂或有机硅型流平剂。
8.根据权利要求1-7任一项所述的环保型水性胶粘剂的制备方法,其特征在于,包括以下步骤:按比例称取各原料,将聚酯多元醇、蓖麻油、木质素、扩链剂置于密闭容器中,90-110℃下真空干燥1h,冷却至70-80℃,加入二月桂酸二丁基锡及三亚乙基二胺,混合搅拌30min,得混合料;将混合料加入等重量丙酮进行溶解,之后加入二异氰酸酯及3-氨基丙基三乙氧基硅烷,体系通入氮气保护,在80-90℃下预聚2-3h后,降温至50-60℃,加入增塑剂、流平剂、防老剂,混合搅拌20-30min,加去离子水分散后脱溶剂,加入增稠剂,最后进行真空脱泡,得所述环保型水性胶粘剂。
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