CN114410236A - 一种耐低温冲击型丙烯酸泡棉胶带及其制备方法 - Google Patents
一种耐低温冲击型丙烯酸泡棉胶带及其制备方法 Download PDFInfo
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Abstract
本发明涉及泡棉胶带领域,特别是涉及一种耐低温冲击型丙烯酸泡棉胶带,所述耐低温冲击型丙烯酸泡棉胶带从上至下依次包括离型层、丙烯酸泡棉层;所述丙烯酸泡棉层包括如下重量份的组分:80‑85份丙烯酸预聚体,6‑15份丙烯酸弹性体,0.1‑0.5份光引发剂,1‑3份发泡剂,0.05‑0.2份交联剂,1‑2份气相二氧化硅。本发明提供一种具有优异的应力松弛性能和冲击吸收性能的耐低温冲击型丙烯酸泡棉胶带;本发明提供一种耐低温冲击型丙烯酸泡棉胶带的制备方法。
Description
技术领域
本发明涉及泡棉胶带领域,特别是涉及一种耐低温冲击型丙烯酸泡棉胶带及其制备方法。
背景技术
目前,汽车外饰件的粘贴常规使用PE泡棉胶带,PU泡棉胶带,和丙烯酸泡棉胶带。由于PE泡棉胶带和PU泡棉胶带的内聚强度不够,只能配合机械,卡扣等方式进行应用,在中大型的装饰件使用受限制。丙烯酸泡棉胶带,由于整体均为丙烯酸材料,具备高强度的内聚力,并且具备优异的耐热,耐候,耐化学等耐老化性能,在汽车的外装饰件广泛使用。
现有技术,丙烯酸泡棉的基体树脂大多采用单一的丙烯酸树脂,树脂的储能模量偏低,发泡技术采用物理添充型,主要添加空心玻璃微珠,但是基体树脂储能模量低,抗冲击性差。填充的空心玻璃微球使泡棉胶带偏硬,应力松弛能力差。在低温下冲击泡棉会破裂造成粘贴失效。
发明内容
为解决上述技术问题,本发明提供一种具有优异的应力松弛性能和冲击吸收性能的耐低温冲击型丙烯酸泡棉胶带。
本发明提供一种耐低温冲击型丙烯酸泡棉胶带的制备方法。
本发明采用如下技术方案:
一种耐低温冲击型丙烯酸泡棉胶带,所述耐低温冲击型丙烯酸泡棉胶带从上至下依次包括离型层、丙烯酸泡棉层;所述丙烯酸泡棉层包括如下重量份的组分:80-85份丙烯酸预聚体,6-15份丙烯酸弹性体,0.1-0.5份光引发剂,1-3份发泡剂,0.05-0.2份交联剂,1-2份气相二氧化硅。
对上述技术方案的进一步改进为,所述丙烯酸预聚体包括如下重量份的组分:88份丙烯酸异辛酯,6份丙烯酸,4份丙烯酸羟乙酯,2份N.N-二甲基丙烯酰胺,0.15份1-羟基环己基苯基甲酮。
对上述技术方案的进一步改进为,所述丙烯酸预聚体的制备工艺包括如下步骤:
根据配方称量88份丙烯酸异辛酯,6份丙烯酸,4份丙烯酸羟乙酯,2份N.N-二甲基丙烯酰胺,0.15份1-羟基环己基苯基甲酮;在150-300r/min转速下搅拌30min后;充氮气30min后,保持温度在40度下,用能量为6W/cm2的UV汞灯,进行照射反应;当粘度为500-800CPS时,停止照射,卸胶待用。
对上述技术方案的进一步改进为,所述丙烯酸弹性体包括如下重量份的组分:2份丙烯酸,38份丙烯酸乙酯,18份甲基丙烯酸甲酯,42份丙烯酸丁酯酯,0.2份偶氮二异丁腈。
对上述技术方案的进一步改进为,所述丙烯酸弹性体的制备工艺包括如下步骤:
根据配方称量2份丙烯酸,38份丙烯酸乙酯,18份甲基丙烯酸甲酯,42份丙烯酸丁酯,乙酸乙酯100份,加进玻璃反应釜中,搅拌混合均匀;升温75℃,用2份甲苯溶解0.2份偶氮二异丁腈,进行滴定3h,温度保持76-78℃;滴定完成后,在75-77℃条件下保温4h;保温结束后,升温130℃后去除溶剂;卸胶得丙烯酸弹性体。
对上述技术方案的进一步改进为,所述丙烯酸弹性体的玻璃化温度设计为-20度,损耗模量与储能模量的比例设计为3.0。
对上述技术方案的进一步改进为,所述发泡剂为阿克苏092DET100D25。
对上述技术方案的进一步改进为,所述气相二氧化硅为赢创R972。
一种耐低温冲击型丙烯酸泡棉胶带的制备方法,包括如下步骤:
S1、称量丙烯酸预聚体80-85份,丙烯酸弹性体6-15份,搅拌4h,使丙烯酸预聚体和丙烯酸弹性体完全混合均匀;
S2、加入0.15份1-羟基环己基苯基甲酮,0.05-0.2份交联剂1,6-己二醇二丙烯酸酯;
S3、进一步添加1-3份发泡剂,1.8份气相二氧化硅;
S4、填充氮气,氮气气泡以相对整体的总体积的10%的量混合,得到气泡混合粘物;
S5、在两张透明PET离型膜之间涂布气泡混合粘物,使得固化后的厚度为0.8mm,在离型膜的两面通过紫外灯照射8分钟,使混合物固化后,剥离上层PET离型膜收卷,得到耐低温冲击型丙烯酸泡棉胶带。
对上述技术方案的进一步改进为,所述紫外灯的照度为6mW/cm3。
本发明的有益效果为:
本发明通过在常规的丙烯酸树脂中,添加一种高弹性模量的高分子丙烯酸弹性体,提升整体的模量从而提升抗冲击性能。丙烯酸弹性体玻璃化温度设计为-20度,损耗模量/储能模量比例设计为3.0,使产品具有高冲击吸收特性。并且发泡方式采用已膨胀发泡剂和填充氮气方式,气泡粒径控制为100-200um,丙烯酸泡棉胶带密度控制为600-700kg/cm3,产品的25%压缩应力为60-80Kpa,使丙烯酸泡棉胶带具有优异的应力松弛性能和冲击吸收性能。
具体实施方式
为更好地理解本发明,下面结合实施例对本发明作进一步说明,但是本发明的实施方式不限于此。
一种耐低温冲击型丙烯酸泡棉胶带,所述耐低温冲击型丙烯酸泡棉胶带从上至下依次包括离型层、丙烯酸泡棉层;所述离型层为透明PET双面离型膜,所述丙烯酸泡棉为独特无溶剂丙烯酸闭孔泡棉;所述丙烯酸泡棉层包括如下重量份的组分:80-85份丙烯酸预聚体,6-15份丙烯酸弹性体,0.1-0.5份光引发剂,1-3份发泡剂,0.05-0.2份交联剂,1-2份气相二氧化硅。
所述丙烯酸预聚体包括如下重量份的组分:88份丙烯酸异辛酯,6份丙烯酸,4份丙烯酸羟乙酯,2份N.N-二甲基丙烯酰胺,0.15份1-羟基环己基苯基甲酮。
丙烯酸预聚体的制备工艺包括如下步骤:
根据配方称量88份丙烯酸异辛酯,6份丙烯酸,4份丙烯酸羟乙酯,2份N.N-二甲基丙烯酰胺,0.15份1-羟基环己基苯基甲酮;在150-300r/min转速下搅拌30min后;充氮气30min后,保持温度在40度下,用能量为6W/cm2的UV汞灯,进行照射反应;当粘度为500-800CPS时,停止照射,卸胶待用。
所述丙烯酸弹性体包括如下重量份的组分:2份丙烯酸,38份丙烯酸乙酯,18份甲基丙烯酸甲酯,42份丙烯酸丁酯酯,0.2份偶氮二异丁腈。
丙烯酸弹性体的制备工艺包括如下步骤:
根据配方称量2份丙烯酸,38份丙烯酸乙酯,18份甲基丙烯酸甲酯,42份丙烯酸丁酯,乙酸乙酯100份,加进玻璃反应釜中,搅拌混合均匀;升温75℃,用2份甲苯溶解0.2份偶氮二异丁腈,进行滴定3h,温度保持76-78℃;滴定完成后,在75-77℃条件下保温4h;保温结束后,升温130℃后去除溶剂;卸胶得丙烯酸弹性体。
一种耐低温冲击型丙烯酸泡棉胶带的制备方法,包括如下步骤:
S1、称量丙烯酸预聚体80-85份,丙烯酸弹性体6-15份,搅拌4h,使丙烯酸预聚体和丙烯酸弹性体完全混合均匀;
S2、加入0.15份1-羟基环己基苯基甲酮,0.05-0.2份交联剂1,6-己二醇二丙烯酸酯;
S3、进一步添加1-3份发泡剂,1.8份气相二氧化硅;
S4、填充氮气,氮气气泡以相对整体的总体积的10%的量混合,得到气泡混合粘物;
S5、在两张透明PET离型膜之间涂布气泡混合粘物,使得固化后的厚度为0.8mm,在离型膜的两面通过紫外灯照射8分钟,紫外灯的照度为6mW/cm3,使混合物固化后,剥离上层PET离型膜收卷,得到耐低温冲击型丙烯酸泡棉胶带。
实施例1
S1、称量丙烯酸预聚体85份,丙烯酸弹性体15份,搅拌4h,使丙烯酸预聚体和丙烯酸弹性体完全混合均匀;
S2、加入0.15份1-羟基环己基苯基甲酮,0.1份交联剂1,6-己二醇二丙烯酸酯;
S3、进一步添加1.5份发泡剂,1.8份气相二氧化硅;
S4、填充氮气,氮气气泡以相对整体的总体积的10%的量混合,得到气泡混合粘物;
S5、在两张透明PET离型膜之间涂布气泡混合粘物,使得固化后的厚度为0.8mm,在离型膜的两面通过紫外灯照射8分钟,紫外灯的照度为6mW/cm3,使混合物固化后,剥离上层PET离型膜收卷,得到耐低温冲击型丙烯酸泡棉胶带。
对比例1
称量丙烯酸预聚体100份;加入0.15份1-羟基环己基苯基甲酮,0.1份交联剂1,6-己二醇二丙烯酸酯;进一步添加1.5份发泡剂阿克苏092DET100D25,1.8份气相二氧化硅赢创R972,混合得到气泡混合粘物;在两张透明PET离型膜之间涂布气泡混合粘物,使得固化后的厚度为0.8mm,在离型膜的两面通过紫外灯照射8分钟,紫外灯的照度为6mW/cm3,使混合物固化后,剥离上层PET离型膜收卷,得到耐低温冲击型丙烯酸泡棉胶带。
对比例2
称量丙烯酸预聚体100份;加入0.15份1-羟基环己基苯基甲酮,0.1份交联剂1,6-己二醇二丙烯酸酯;进一步添加5份玻璃球微球3M K1,1.8份气相二氧化硅赢创R972,混合得到气泡混合粘物;在两张透明PET离型膜之间涂布气泡混合粘物,使得固化后的厚度为0.8mm,在离型膜的两面通过紫外灯照射8分钟,紫外灯的照度为6mW/cm3,使混合物固化后,剥离上层PET离型膜收卷,得到耐低温冲击型丙烯酸泡棉胶带。
对实施例1、对比例1及对比例2分别进行性能测试,测试结果如下:
参照标准GB/T2792-2014测试剥离力;参照标准ASTM D1002测试动态剪切力;参照标准GB/T4851-2014测试保持力;低温冲击测试:取样70mm*30mm,粘贴在汽车油漆板和ABS电镀板之间,用5kg压辊压合30S,然后静置在常温下24h,然后放进-40℃条件下4h后,然后用500g不锈钢球,直径为50mm。从300mm高度,自由落体冲击测试板,观察测试板是否松脱。
通过上述实例和比较例实验数据可以看出,在预聚体中混合一种高弹性模量的高分子丙烯酸弹性体和采用发泡方式、已膨胀发泡剂和填充氮气方式,可以大幅提升泡棉胶带的低温冲击性能。
以上实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对本发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。
Claims (10)
1.一种耐低温冲击型丙烯酸泡棉胶带,其特征在于,所述耐低温冲击型丙烯酸泡棉胶带从上至下依次包括离型层、丙烯酸泡棉层;所述丙烯酸泡棉层包括如下重量份的组分:80-85份丙烯酸预聚体,6-15份丙烯酸弹性体,0.1-0.5份光引发剂,1-3份发泡剂,0.05-0.2份交联剂,1-2份气相二氧化硅。
2.根据权利要求1所述的耐低温冲击型丙烯酸泡棉胶带,其特征在于,所述丙烯酸预聚体包括如下重量份的组分:88份丙烯酸异辛酯,6份丙烯酸,4份丙烯酸羟乙酯,2份N.N-二甲基丙烯酰胺,0.15份1-羟基环己基苯基甲酮。
3.根据权利要求2所述的耐低温冲击型丙烯酸泡棉胶带,其特征在于,所述丙烯酸预聚体的制备工艺包括如下步骤:
根据配方称量88份丙烯酸异辛酯,6份丙烯酸,4份丙烯酸羟乙酯,2份N.N-二甲基丙烯酰胺,0.15份1-羟基环己基苯基甲酮;在150-300r/min转速下搅拌30min后;充氮气30min后,保持温度在40度下,用能量为6W/cm2的UV汞灯,进行照射反应;当粘度为500-800CPS时,停止照射,卸胶待用。
4.根据权利要求1所述的耐低温冲击型丙烯酸泡棉胶带,其特征在于,所述丙烯酸弹性体包括如下重量份的组分:2份丙烯酸,38份丙烯酸乙酯,18份甲基丙烯酸甲酯,42份丙烯酸丁酯酯,0.2份偶氮二异丁腈。
5.根据权利要求4所述的耐低温冲击型丙烯酸泡棉胶带,其特征在于,所述丙烯酸弹性体的制备工艺包括如下步骤:
根据配方称量2份丙烯酸,38份丙烯酸乙酯,18份甲基丙烯酸甲酯,42份丙烯酸丁酯,乙酸乙酯100份,加进玻璃反应釜中,搅拌混合均匀;升温75℃,用2份甲苯溶解0.2份偶氮二异丁腈,进行滴定3h,温度保持76-78℃;滴定完成后,在75-77℃条件下保温4h;保温结束后,升温130℃后去除溶剂;卸胶得丙烯酸弹性体。
6.根据权利要求5所述的耐低温冲击型丙烯酸泡棉胶带,其特征在于,所述丙烯酸弹性体的玻璃化温度设计为-20度,损耗模量与储能模量的比例设计为3.0。
7.根据权利要求1所述的耐低温冲击型丙烯酸泡棉胶带,其特征在于,所述发泡剂为阿克苏092DET100D25。
8.根据权利要求1所述的耐低温冲击型丙烯酸泡棉胶带,其特征在于,所述气相二氧化硅为赢创R972。
9.一种耐低温冲击型丙烯酸泡棉胶带的制备方法,其特征在于,包括如下步骤:
S1、称量丙烯酸预聚体80-85份,丙烯酸弹性体6-15份,搅拌4h,使丙烯酸预聚体和丙烯酸弹性体完全混合均匀;
S2、加入0.15份1-羟基环己基苯基甲酮,0.05-0.2份交联剂1,6-己二醇二丙烯酸酯;
S3、进一步添加1-3份发泡剂,1.8份气相二氧化硅;
S4、填充氮气,氮气气泡以相对整体的总体积的10%的量混合,得到气泡混合粘物;
S5、在两张透明PET离型膜之间涂布气泡混合粘物,使得固化后的厚度为0.8mm,在离型膜的两面通过紫外灯照射8分钟,使混合物固化后,剥离上层PET离型膜收卷,得到耐低温冲击型丙烯酸泡棉胶带。
10.根据权利要求9所述的耐低温冲击型丙烯酸泡棉胶带的制备方法,其特征在于,所述紫外灯的照度为6mW/cm3。
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