CN113388087A - 水性聚氨酯树脂及其制备方法、水性粘合剂及其应用 - Google Patents
水性聚氨酯树脂及其制备方法、水性粘合剂及其应用 Download PDFInfo
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Abstract
本发明提供了一种水性聚氨酯树脂及其制备方法、水性粘合剂及其应用,其中水性聚氨酯树脂,包括以下重量份的原料制成:异佛尔酮二异氰酸酯:38‑42份、聚四氢呋喃醚二醇(Mn=2000):38‑42份、聚己内酯二醇(Mn=2000):38‑42份、N‑甲基吡咯烷酮:19‑21份、1,4‑丁二醇:6.5‑7.5份、二羟甲基丁酸:5.5‑6.5份、有机铋催化剂:0.09‑0.11份、丙酮:125‑135份、N,N‑二甲基乙醇胺:3.3‑3.5份、去离子水:143‑153份、1,6‑己二胺:2.1‑2.3份。本水性聚氨酯树脂及其制备方法、水性粘合剂及其应用,能够满足抗拉性能和延伸率的要求。
Description
技术领域
本发明涉及水性粘合剂技术领域,尤其涉及一种水性聚氨酯树脂及其制备方法、水性粘合剂及其应用。
背景技术
采用在基材上涂覆水性粘合剂,在粘合剂层进行静电植绒,通过烘烤进行固化,是目前植绒产品的通用生产方式,用于汽车密封条植绒带的基材主要有PVC、TPV、EPDM等薄膜,水性粘合剂主要采用聚丙烯酸酯乳液。
如专利CN 109337008A所述,采用丙烯酸异辛酯、丙烯酸乙酯、丙烯酸正丁酯、甲基丙烯酸甲酯、交联单体N-羟基丙烯酰胺等进行乳液聚合,通过软硬单体的搭配,制备一种具有一定耐磨性和结构强度的水性植绒粘合剂。
但由于采用丙烯酸单体聚合所带来较弱的碳-碳键的键能,胶水的柔韧性及抗拉强度较差,在线热贴合过程中受热后易被拉伸,在要求较高的汽车密封条植绒产品,该类产品的抗拉性能和延伸率无法满足要求。
发明内容
有鉴于此,本发明要解决的技术问题是提供一种水性聚氨酯树脂及其制备方法、水性粘合剂及其应用,能够满足抗拉性能和延伸率的要求。
本发明的技术方案是这样实现的:
一种水性聚氨酯树脂,包括以下重量份的原料制成:
异佛尔酮二异氰酸酯:38-42份
聚四氢呋喃醚二醇(Mn=2000):38-42份
聚己内酯二醇(Mn=2000):38-42份
N-甲基吡咯烷酮:19-21份
1,4-丁二醇:6.5-7.5份
二羟甲基丁酸:5.5-6.5份
有机铋催化剂:0.09-0.11份
丙酮:125-135份
N,N-二甲基乙醇胺:3.3-3.5份
去离子水:143-153份
1,6-己二胺:2.1-2.3份。
优选的,包括以下重量份的原料制成:
包括以下重量份的原料制成:
异佛尔酮二异氰酸酯:38份
聚四氢呋喃醚二醇(Mn=2000):38份
聚己内酯二醇(Mn=2000):38份
N-甲基吡咯烷酮:19-份
1,4-丁二醇:6.5份
二羟甲基丁酸:5.5份
有机铋催化剂:0.09份
丙酮:125份
N,N-二甲基乙醇胺:3.3份
去离子水:143份
1,6-己二胺:2.1份。
优选的,包括以下重量份的原料制成:
异佛尔酮二异氰酸酯:42份
聚四氢呋喃醚二醇(Mn=2000):42份
聚己内酯二醇(Mn=2000):42份
N-甲基吡咯烷酮:21份
1,4-丁二醇:7.5份
二羟甲基丁酸:6.5份
有机铋催化剂:0.11份
丙酮:135份
N,N-二甲基乙醇胺:3.5份
去离子水:153份
1,6-己二胺:2.3份。
优选的,包括以下重量份的原料制成:
异佛尔酮二异氰酸酯:40份
聚四氢呋喃醚二醇(Mn=2000):40份
聚己内酯二醇(Mn=2000):40份
N-甲基吡咯烷酮:20份
1,4-丁二醇:7份
二羟甲基丁酸:6份
有机铋催化剂:0.1份
丙酮:130份
N,N-二甲基乙醇胺:3.4份
去离子水:148份
1,6-己二胺:2.2份。
一种水性聚氨酯树脂的制备方法,包括以下步骤:
S1、向反应釜中加入聚四氢呋喃醚二醇、聚己内酯二醇,搅拌融化后,加入异佛尔酮二异氰酸酯,升温至80℃后反应90分钟;
S2、降温至60℃,加入N-甲基吡咯烷酮、1,4-丁二醇,搅拌均匀后,升温至80℃继续保温反应60分钟,加入二羟甲基丁酸和有机铋催化剂,持续保温反应至NCO含量达到设计值;
S3、反应结束后降温并缓缓加入计量的丙酮,丙酮加毕,温度降至40℃左右,加入N,N-二甲基乙醇胺,提高搅拌速度,加入去离子水进行高速分散;分散结束,加入1,6-己二胺进行扩链反应;
S4、升温至60℃,对分散液进行减压脱除丙酮,待丙酮完全脱出,则降温至40℃左右,用200目滤布过滤,包装。
一种水性粘合剂,包括以下重量份的原料制成:
上述所述的水性聚氨酯树脂:90份
分散剂:0.5份
润湿剂:0.3份
流平剂:0.3份
干燥调节剂:3份
消泡剂:0.5份
水:4.0份
增稠剂:1份
杀菌剂:0.4。
优选的,所述干燥调节剂为丙二醇和/或丙三醇。
上述水性粘合剂的应用,其特征在于,所述水性粘合剂用于用于汽车密封条植绒的绒毛和基材薄膜的粘接。
本发明提出的水性聚氨酯树脂及其制备方法、水性粘合剂及其应用,通过采用高固含量(≥50%)的水性聚氨酯树脂作为粘合剂的主料,鉴于聚氨酯的氨酯键的键能大,胶水分子的内聚能也较大,解决了产品在热贴合过程中的抗拉强度问题,对基材薄膜的附着力和产品的耐磨性可以满足汽车密封条产品的性能要求。
具体实施方式
下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1
一种水性聚氨酯树脂,包括以下重量份的原料制成:
异佛尔酮二异氰酸酯:38份
聚四氢呋喃醚二醇(Mn=2000):38份
聚己内酯二醇(Mn=2000):38份
N-甲基吡咯烷酮:19-份
1,4-丁二醇:6.5份
二羟甲基丁酸:5.5份
有机铋催化剂:0.09份
丙酮:125份
N,N-二甲基乙醇胺:3.3份
去离子水:143份
1,6-己二胺:2.1份。
上述水性聚氨酯树脂的制备方法,包括以下步骤:
S1、向反应釜中加入聚四氢呋喃醚二醇、聚己内酯二醇,搅拌融化后,加入异佛尔酮二异氰酸酯,升温至80℃后反应90分钟;
S2、降温至60℃,加入N-甲基吡咯烷酮、1,4-丁二醇,搅拌均匀后,升温至80℃继续保温反应60分钟,加入二羟甲基丁酸和有机铋催化剂,持续保温反应至NCO含量达到设计值;
S3、反应结束后降温并缓缓加入计量的丙酮,丙酮加毕,温度降至40℃左右,加入N,N-二甲基乙醇胺,提高搅拌速度,加入去离子水进行高速分散;分散结束,加入1,6-己二胺进行扩链反应;
S4、升温至60℃,对分散液进行减压脱除丙酮,待丙酮完全脱出,则降温至40℃左右,用200目滤布过滤,包装。
实施例2
一种水性聚氨酯树脂,包括以下重量份的原料制成:
异佛尔酮二异氰酸酯:42份
聚四氢呋喃醚二醇(Mn=2000):42份
聚己内酯二醇(Mn=2000):42份
N-甲基吡咯烷酮:21份
1,4-丁二醇:7.5份
二羟甲基丁酸:6.5份
有机铋催化剂:0.11份
丙酮:135份
N,N-二甲基乙醇胺:3.5份
去离子水:153份
1,6-己二胺:2.3份。
上述水性聚氨酯树脂的制备方法,包括以下步骤:
S1、向反应釜中加入聚四氢呋喃醚二醇、聚己内酯二醇,搅拌融化后,加入异佛尔酮二异氰酸酯,升温至80℃后反应90分钟;
S2、降温至60℃,加入N-甲基吡咯烷酮、1,4-丁二醇,搅拌均匀后,升温至80℃继续保温反应60分钟,加入二羟甲基丁酸和有机铋催化剂,持续保温反应至NCO含量达到设计值;
S3、反应结束后降温并缓缓加入计量的丙酮,丙酮加毕,温度降至40℃左右,加入N,N-二甲基乙醇胺,提高搅拌速度,加入去离子水进行高速分散;分散结束,加入1,6-己二胺进行扩链反应;
S4、升温至60℃,对分散液进行减压脱除丙酮,待丙酮完全脱出,则降温至40℃左右,用200目滤布过滤,包装。
实施例3
一种水性聚氨酯树脂,包括以下重量份的原料制成:
异佛尔酮二异氰酸酯:40份
聚四氢呋喃醚二醇(Mn=2000):40份
聚己内酯二醇(Mn=2000):40份
N-甲基吡咯烷酮:20份
1,4-丁二醇:7份
二羟甲基丁酸:6份
有机铋催化剂:0.1份
丙酮:130份
N,N-二甲基乙醇胺:3.4份
去离子水:148份
1,6-己二胺:2.2份。
上述水性聚氨酯树脂的制备方法,包括以下步骤:
S1、向反应釜中加入聚四氢呋喃醚二醇、聚己内酯二醇,搅拌融化后,加入异佛尔酮二异氰酸酯,升温至80℃后反应90分钟;
S2、降温至60℃,加入N-甲基吡咯烷酮、1,4-丁二醇,搅拌均匀后,升温至80℃继续保温反应60分钟,加入二羟甲基丁酸和有机铋催化剂,持续保温反应至NCO含量达到设计值;
S3、反应结束后降温并缓缓加入计量的丙酮,丙酮加毕,温度降至40℃左右,加入N,N-二甲基乙醇胺,提高搅拌速度,加入去离子水进行高速分散;分散结束,加入1,6-己二胺进行扩链反应;
S4、升温至60℃,对分散液进行减压脱除丙酮,待丙酮完全脱出,则降温至40℃左右,用200目滤布过滤,包装。
分别采用上述实施例1-4制备的水性聚氨酯树脂,按照以下重量份的原料制成水性粘合剂:
上述所述的水性聚氨酯树脂:90份
分散剂:0.5份
润湿剂:0.3份
流平剂:0.3份
干燥调节剂:3份
消泡剂:0.5份
水:4.0份
增稠剂:1份
杀菌剂:0.4。
制得的水性粘合剂和普通植绒粘合剂的植绒带抗拉强度、延伸率对比如下表所示:
抗拉强度(N/cm) | 延伸率(%) | |
本申请水性粘合剂 | 30-33 | 50-100 |
普通植绒粘合剂 | 25-27 | 200-300 |
在同样的胶水厚度下,采用本发明的抗拉伸植绒粘合剂相比普通植绒带,抗拉强度大20%,延伸率小一倍以上,说明抗拉伸效果更好
本方明的优点在于增加了产品的抗拉强度和较大的延伸率,能够满足目前汽车行业对汽车密封条植绒带在线贴带的热贴合工艺要求,解决了生产过程中的绒带受热后拉伸问题。
最后需要说明的是:以上所述仅为本发明的较佳实施例,仅用于说明本发明的技术方案,并非用于限定本发明的保护范围。凡在本发明的精神和原则之内所做的任何修改、等同替换、改进等,均包含在本发明的保护范围内。
Claims (8)
1.一种水性聚氨酯树脂,其特征在于,包括以下重量份的原料制成:
异佛尔酮二异氰酸酯:38-42份
聚四氢呋喃醚二醇(Mn=2000):38-42份
聚己内酯二醇(Mn=2000):38-42份
N-甲基吡咯烷酮:19-21份
1,4-丁二醇:6.5-7.5份
二羟甲基丁酸:5.5-6.5份
有机铋催化剂:0.09-0.11份
丙酮:125-135份
N,N-二甲基乙醇胺:3.3-3.5份
去离子水:143-153份
1,6-己二胺:2.1-2.3份。
2.如权利要求1所述的水性聚氨酯树脂,其特征在于,包括以下重量份的原料制成:
包括以下重量份的原料制成:
异佛尔酮二异氰酸酯:38份
聚四氢呋喃醚二醇(Mn=2000):38份
聚己内酯二醇(Mn=2000):38份
N-甲基吡咯烷酮:19-份
1,4-丁二醇:6.5份
二羟甲基丁酸:5.5份
有机铋催化剂:0.09份
丙酮:125份
N,N-二甲基乙醇胺:3.3份
去离子水:143份
1,6-己二胺:2.1份。
3.如权利要求1所述的水性聚氨酯树脂,其特征在于,包括以下重量份的原料制成:
异佛尔酮二异氰酸酯:42份
聚四氢呋喃醚二醇(Mn=2000):42份
聚己内酯二醇(Mn=2000):42份
N-甲基吡咯烷酮:21份
1,4-丁二醇:7.5份
二羟甲基丁酸:6.5份
有机铋催化剂:0.11份
丙酮:135份
N,N-二甲基乙醇胺:3.5份
去离子水:153份
1,6-己二胺:2.3份。
4.如权利要求1所述的水性聚氨酯树脂,其特征在于,包括以下重量份的原料制成:
异佛尔酮二异氰酸酯:40份
聚四氢呋喃醚二醇(Mn=2000):40份
聚己内酯二醇(Mn=2000):40份
N-甲基吡咯烷酮:20份
1,4-丁二醇:7份
二羟甲基丁酸:6份
有机铋催化剂:0.1份
丙酮:130份
N,N-二甲基乙醇胺:3.4份
去离子水:148份
1,6-己二胺:2.2份。
5.一种上述权利要求1-4任一项所述的水性聚氨酯树脂的制备方法,其特征在于,包括以下步骤:
S1、向反应釜中加入聚四氢呋喃醚二醇、聚己内酯二醇,搅拌融化后,加入异佛尔酮二异氰酸酯,升温至80℃后反应90分钟;
S2、降温至60℃,加入N-甲基吡咯烷酮、1,4-丁二醇,搅拌均匀后,升温至80℃继续保温反应60分钟,加入二羟甲基丁酸和有机铋催化剂,持续保温反应至NCO含量达到设计值;
S3、反应结束后降温并缓缓加入计量的丙酮,丙酮加毕,温度降至40℃左右,加入N,N-二甲基乙醇胺,提高搅拌速度,加入去离子水进行高速分散;分散结束,加入1,6-己二胺进行扩链反应;
S4、升温至60℃,对分散液进行减压脱除丙酮,待丙酮完全脱出,则降温至40℃左右,用200目滤布过滤,包装。
6.一种水性粘合剂,其特征在于,包括以下重量份的原料制成:
权利要求1-4任一项所述的水性聚氨酯树脂:90份
分散剂:0.5份
润湿剂:0.3份
流平剂:0.3份
干燥调节剂:3份
消泡剂:0.5份
水:4.0份
增稠剂:1份
杀菌剂:0.4。
7.如权利要求6所述的水性粘合剂,其特征在于,所述干燥调节剂为丙二醇和/或丙三醇。
8.权利要求6或7所述的水性粘合剂的应用,其特征在于,所述水性粘合剂用于用于汽车密封条植绒的绒毛和基材薄膜的粘接。
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