CN114395338A - 一种应用于镜片的研磨胶带及其制备方法 - Google Patents
一种应用于镜片的研磨胶带及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种应用于镜片的研磨胶带,包括底涂层、基材层、胶层和离型膜层,所述底涂层和胶层分别位于基材层两侧,所述离型膜层贴合在胶层的另一侧;所述底涂层为水性底涂涂料涂布而成,所述水性底涂涂料由以下重量份组分组成:聚氨酯树脂50~80份,苯乙烯20~35份,3‑(N,N‑二甲基氨基)丙烯酸乙酯15~30份,双羟甲基丙二酸二乙酯10~20份,引发剂1~3份,消泡剂0.5~1份,1,3‑二甲基脲0.5~2份,2‑甲基‑2‑[(1‑氧代‑2‑丙烯基)氨基]‑1‑丙磺酸钠盐3~5份,N‑亚硝基‑N‑苯基羟胺铝1~5份,N‑甲基‑2‑羟基乙胺0.5~2份,水性封闭型异氰酸酯交联剂15~25份,去离子水50~80份,乙醇30~50份。本发明能够有效保护树脂表面,同时与焊锡结合牢靠不易分离,起到较好的固定效果,粘性范围合适,树脂结合力强,无残胶。
Description
技术领域
本发明属于研磨胶带技术领域,尤其涉及一种应用于镜片的研磨胶带及其制备方法。
背景技术
树脂镜片在研磨过程中需要将其固定,传统方法为使用夹具将镜片固定在研磨垫上,操作复杂,生产效率较低,专利CN202297446U提供一种研磨双面胶带,该双面胶带一面临时固定应用于连接处金属粘结,另一面则为永久性固定应用于研磨用绒布的粘结,能够广泛应用于镜片研磨行业,该专利公开了一种研磨双面胶带,在聚对苯二甲酸乙二酯上下表面各覆有一层丙烯酸酯胶黏剂,在上层丙烯酸酯胶黏剂上再覆一层双面剥离纸。这种胶带存在:PET材料偏硬,服帖性差,研磨过程中容易与镜片分离的问题。
发明内容
本发明目的在于提供一种应用于镜片的研磨胶带,该应用于镜片的研磨胶带能够有效保护树脂表面,同时与焊锡结合牢靠不易分离,起到较好的固定效果,粘性范围合适,树脂结合力强,无残胶。
为达到上述目的,本发明采用的技术方案是:一种应用于镜片的研磨胶带,包括底涂层、基材层、胶层和离型膜层,所述底涂层和胶层分别位于基材层两侧,所述离型膜层贴合在胶层的另一侧;所述底涂层为水性底涂涂料涂布而成,所述水性底涂涂料由以下重量份组分组成:
上述技术方案中进一步改进的技术方案如下:
1.上述方案中,所述引发剂为过硫酸铵或过硫酸钾。
2.上述方案中,所述消泡剂为有机硅类消泡剂。
3.上述方案中,所述基材层为PVC原膜,厚度为65-90μm;所述PVC基材的热收缩率(150℃*20min)MD\TD均≤3%。
4.上述方案中,所述底涂层的厚度为2-5μm。
5.上述方案中,所述胶层为亚克力胶水,胶层厚度为10-30μm。
6.上述方案中,所述离型膜层为PET单硅离型膜,厚度12-75μm,离型力 10-30g/25mm。
本发明的另一技术方案如下:一种应用于镜片的研磨胶带的制备方法,包括如下步骤:
S1、配制底涂涂料;
S2、在基材表面涂布底涂涂料,经过40-60℃烘箱烘干,得到底涂层;
S3、在离型层涂亚克力胶,经过80-105℃烘箱烘干后得到胶层;
S4、将离型层上的胶层与基材层上的非底涂面复合即可得到研磨胶带。
上述技术方案中进一步改进的技术方案如下:
1.上述方案中,所述步骤S1中的底涂涂料的制备方法包括以下步骤:
S01,向装有冷凝回流和滴加装置的反应釜中加入乙醇30~50份,开动搅拌,缓慢加入配方中的聚氨酯树脂50~80份、苯乙烯20~35份、3-(N,N-二甲基氨基) 丙烯酸乙酯15~30份、双羟甲基丙二酸二乙酯10~20份,升温至110-120℃,在此温度下保温1~2h;
S02,将引发剂1~3份,2-甲基-2-[(1-氧代-2-丙烯基)氨基]-1-丙磺酸钠盐3~5份,N-亚硝基-N-苯基羟胺铝1~5份,水性封闭型异氰酸酯交联剂15~25份,去离子水50~80份,充分混溶后,缓慢到反应釜中;
S03,上述混合物滴加完后,保温1~2h,将消泡剂0.5~1份和1,3-二甲基脲 0.5~2份依次加入反应釜中,加料过程中反应釜持续搅拌;
S04,保温1h,降温至35~40℃,过滤,即得底涂涂料。
由于上述技术方案的运用,本发明与现有技术相比具有下列优点:
1、本发明应用于镜片的研磨胶带,其通过在聚氨酯树脂、苯乙烯、3-(N,N- 二甲基氨基)丙烯酸乙酯、双羟甲基丙二酸二乙酯中添加2-甲基-2-[(1-氧代-2-丙烯基)氨基]-1-丙磺酸钠盐,N-亚硝基-N-苯基羟胺铝和N-甲基-2-羟基乙胺,既增强了底涂层与PVC基材层的贴合强度,同时也能够和焊锡液有较好的结合力,在使用过程中不易脱落。
2、本发明应用于镜片的研磨胶带,其选用PVC材料作为基材层,材料比较柔软,服帖性;同时在PVC基材加底涂层技术,不同于现有的直接在基材上涂布双面胶层,这种设计使材料与焊锡可以有效结合,具有独特性。
具体实施方式
下面结合实施例对本发明作进一步描述:
实施例1~4:一种应用于镜片的研磨胶带,包括底涂层、基材层、胶层和离型膜层,所述底涂层和胶层分别位于基材层两侧,所述离型膜层贴合在胶层的另一侧;所述底涂层为水性底涂涂料涂布而成,所述水性底涂涂料由以下重量份组分组成,如表1所示:
表1
实施例1引发剂为过硫酸铵;所述基材层为PVC原膜,厚度为65μm;所述PVC基材的热收缩率(150℃*20min)MD\TD均≤3%;所述底涂层的厚度为 2μm;所述胶层为亚克力胶水,胶层厚度为10μm;所述离型膜层为PET单硅离型膜,厚度25μm,离型力10-30g/25mm。
实施例2中引发剂为过硫酸钾;所述基材层为PVC原膜,厚度为90μm;所述PVC基材的热收缩率(150℃*20min)MD\TD均≤3%;所述底涂层的厚度为3μm;所述胶层为亚克力胶水,胶层厚度为30μm;所述离型膜层为PET单硅离型膜,厚度12μm,离型力10-30g/25mm。
实施例3中引发剂为过硫酸钾;所述基材层为PVC原膜,厚度为75μm;所述PVC基材的热收缩率(150℃*20min)MD\TD均≤3%;所述底涂层的厚度为4μm;所述胶层为亚克力胶水,胶层厚度为20μm;所述离型膜层为PET单硅离型膜,厚度75μm,离型力10-30g/25mm。
实施例4中引发剂为过硫酸铵;所述基材层为PVC原膜,厚度为80μm;所述PVC基材的热收缩率(150℃*20min)MD\TD均≤3%;所述底涂层的厚度为5μm;所述胶层为亚克力胶水,胶层厚度为25μm;所述离型膜层为PET单硅离型膜,厚度50μm,离型力10-30g/25mm。
上述应用于镜片的研磨胶带的制备方法如下:
S1、配制底涂涂料;具体为:S01,向装有冷凝回流和滴加装置的反应釜中加入乙醇30~50份,开动搅拌,缓慢加入配方中的聚氨酯树脂50~80份、苯乙烯20~35份、3-(N,N-二甲基氨基)丙烯酸乙酯15~30份、双羟甲基丙二酸二乙酯 10~20份,升温至110-120℃,在此温度下保温1~2h;
S02,将引发剂1~3份,2-甲基-2-[(1-氧代-2-丙烯基)氨基]-1-丙磺酸钠盐3~5份,N-亚硝基-N-苯基羟胺铝1~5份,水性封闭型异氰酸酯交联剂15~25份,去离子水50~80份,充分混溶后,缓慢到反应釜中;
S03,上述混合物滴加完后,保温1~2h,将消泡剂0.5~1份和1,3-二甲基脲 0.5~2份依次加入反应釜中,加料过程中反应釜持续搅拌;
S04,保温1h,降温至35~40℃,过滤,即得底涂涂料;
S2、在基材表面涂布底涂涂料,经过40-60℃烘箱烘干,得到底涂层;
S3、在离型层涂亚克力胶,经过80-105℃烘箱烘干后得到胶层;
S4、将离型层上的胶层与基材层上的非底涂面复合即可得到研磨胶带。
对比例1~2:一种应用于镜片的研磨胶带,包括底涂层、基材层、胶层和离型膜层,所述底涂层和胶层分别位于基材层两侧,所述离型膜层贴合在胶层的另一侧;所述底涂层为水性底涂涂料涂布而成,所述水性底涂涂料由以下重量份组分组成,如表2所示:
表2
组分 | 对比例1 | 对比例2 |
聚氨酯树脂 | 50份 | 60份 |
苯乙烯 | 25份 | 30份 |
3-(N,N-二甲基氨基)丙烯酸乙酯 | 23份 | 25份 |
双羟甲基丙二酸二乙酯 | 12份 | 15份 |
引发剂 | 1份 | 2份 |
消泡剂 | 1份 | 0.5份 |
1,3-二甲基脲(润湿剂) | 1.5份 | 2份 |
2-甲基-2-[(1-氧代-2-丙烯基)氨基]-1-丙磺酸钠盐 | - | 3份 |
N-亚硝基-N-苯基羟胺铝 | - | 5份 |
N-甲基-2-羟基乙胺 | 1.2份 | - |
水性封闭型异氰酸酯交联剂 | 18份 | 15份 |
去离子水 | 55份 | 60份 |
乙醇 | 35份 | 30份 |
对比例制备方法同实施例。
上述实施例1~4和对比例1~2制得的研磨胶带的性能如表3所示:
表3
注:▲+:涂层经过浸泡后外观无异常,但使用手指甲刮涂层表面,会出现轻微分离现象
测试方法如下:
1)耐水性测试:常温自来水浸泡30min观察表面涂层有无破坏;
2)与PVC附着力:百格力测试法;
3)转移率:25mm宽日东31B胶带贴合底涂面,70℃,2kg铜条热压20h 后测试31B胶带对标准S304钢板的剥离;
4)焊锡结合状态:将PVC底涂面以∠45°斜置,焊锡融化后自由低落(距离PVC膜10cm)。
如表3的评价结果所示,实施例研磨胶带的底涂层耐水性强,与PVC附着力好,在使用过程中不易脱落,而对比例1底涂层与焊锡的贴合力较差,对比例2底涂层与基材的贴合力较差;可知,本发明的底涂层与PVC基材层的贴合强度更好,同时也能够和焊锡液有较好的结合力。
上述实施例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施,并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰,都应涵盖在本发明的保护范围之内。
Claims (9)
2.根据权利要求1所述的应用于镜片的研磨胶带,其特征在于:所述引发剂为过硫酸铵或过硫酸钾。
3.根据权利要求1所述的应用于镜片的研磨胶带,其特征在于:所述消泡剂为有机硅类消泡剂。
4.根据权利要求1所述的应用于镜片的研磨胶带,其特征在于:所述基材层为PVC原膜,厚度为65-90μm;所述PVC基材的热收缩率(150℃*20min)MD\TD均≤3%。
5.根据权利要求1所述的应用于镜片的研磨胶带,其特征在于:所述底涂层的厚度为2-5μm。
6.根据权利要求1所述的应用于镜片的研磨胶带,其特征在于:所述胶层为亚克力胶水,胶层厚度为10-30μm。
7.根据权利要求1所述的应用于镜片的研磨胶带,其特征在于:所述离型膜层为PET单硅离型膜,厚度12-75μm,离型力10-30g/25mm。
8.一种权利要求1~7任一所述的应用于镜片的研磨胶带的制备方法,其特征在于:所述研磨胶带的制备方法包括如下步骤:
S1、配制底涂涂料;
S2、在基材表面涂布底涂涂料,经过40-60℃烘箱烘干,得到底涂层;
S3、在离型层涂亚克力胶,经过80-105℃烘箱烘干后得到胶层;
S4、将离型层上的胶层与基材层上的非底涂面复合即可得到研磨胶带。
9.根据权利要求8所述的应用于镜片的研磨胶带的制备方法,其特征在于:所述步骤S1中的底涂涂料的制备方法包括以下步骤:
S01,向装有冷凝回流和滴加装置的反应釜中加入乙醇30~50份,开动搅拌,缓慢加入配方中的聚氨酯树脂50~80份、苯乙烯20~35份、3-(N,N-二甲基氨基)丙烯酸乙酯15~30份、双羟甲基丙二酸二乙酯10~20份,升温至110-120℃,在此温度下保温1~2h;
S02,将引发剂1~3份,2-甲基-2-[(1-氧代-2-丙烯基)氨基]-1-丙磺酸钠盐3~5份,N-亚硝基-N-苯基羟胺铝1~5份和N-甲基-2-羟基乙胺0.5~2份,水性封闭型异氰酸酯交联剂15~25份,去离子水50~80份,充分混溶后,缓慢到反应釜中;
S03,上述混合物滴加完后,保温1~2h,将消泡剂0.5~1份和1,3-二甲基脲0.5~2份依次加入反应釜中,加料过程中反应釜持续搅拌;
S04,保温1h,降温至35~40℃,过滤,即得底涂涂料。
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