CN108300372A - 丁基橡胶热熔压敏胶布基绝缘胶带及其制作方法 - Google Patents
丁基橡胶热熔压敏胶布基绝缘胶带及其制作方法 Download PDFInfo
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Abstract
本发明公开了一种丁基橡胶热熔压敏胶布基绝缘胶带及其制作方法,所述丁基橡胶热熔压敏胶布基绝缘胶带依次由丁基橡胶热熔压敏胶涂层、布基层和热熔压敏胶涂层三层组成;首先将丁基橡胶热熔压敏胶涂层布基层的一面,冷却后,将热熔压敏胶涂层涂布到布基层的另一面,冷却后收母卷并分切即得到丁基橡胶热熔压敏胶布基绝缘胶带。本发明制备得到的丁基橡胶热熔压敏胶布基绝缘胶带质量好,不易脱胶,解卷方便不劈叉,而且成本低,适用于工业和民用,具有很强的实用性。
Description
技术领域
本发明涉及胶带领域,具体地指一种丁基橡胶热熔压敏胶布基绝缘胶带及其制作方法。
背景技术
目前,无论是工业领域还是民用领域所用的布基绝缘胶带,均是压延型的,该胶带由于含有工业凡士林和沥青,对环境造成较大污染,对环境和接触人体造成健康危害。而且,传统的工艺、配方生产的布基绝缘胶带物理性能指标差,也极容易老化,导致使用领域范围较窄,而且容易出现安全事故。行业与制造厂商也在积极寻找有效解决方法,但收效甚微。传统的加工工艺,胶料与布基涂布结合后,很容易出现解卷脱胶或完全解不开卷,导致胶带无法使用。而且,传统的布基胶带在制造过程中,由于设备投资的、占地大、能耗高、污染大,因而导致生产制造成本较高,且没有人员愿意操作。也有制造商采用水性乳液压敏胶涂布布基,但水性胶水耐水性差、综合物性指标不理想,一直未被行业及用户所接收。
发明内容
本发明的第一目的是针对现有技术的不足,提供了一种丁基橡胶热熔压敏胶布基绝缘胶带,该布基绝缘胶带不仅绝缘性能大幅提升,而且具有粘性好,不易龟裂,同时耐温性好和质量好的特点。
本发明的第二目的是针对现有技术的不足,提供了一种丁基橡胶热熔压敏胶布基绝缘胶带的制作方法,该方法以纯棉纱与化纤纱混纺的布基材料;丁基橡胶热熔压敏胶粘剂在100~150℃下挤出涂布于布基上,冷却后制成胶带。
为实现第一目的,本发明提供的一种丁基橡胶热熔压敏胶布基绝缘胶带,所述丁基橡胶热熔压敏胶布基绝缘胶带依次由丁基橡胶热熔压敏胶涂层、布基层和热熔压敏胶涂层三层组成,其中,
所述丁基橡胶热熔压敏胶涂层的原料中各组分按重量份数比由20~50份的丁基橡胶、20~40份的聚异丁烯、10~20份的无规聚丙烯、10~20份的环烷油、20~40份的碳酸钙、5~15份的PE蜡、1~3份的多元受阻酚型抗氧剂和1~3份的色料组成;
所述热熔压敏胶涂层的原料中各组分按重量份数比由20~45份的氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、10~40份的石油树脂、5~30份的天然萜烯树脂、10~50份的环烷油、10~40份的碳酸钙、3~10份的PE蜡、0.5~5份的AT-10抗氧剂和1~3份色料组成。
进一步地,所述丁基橡胶热熔压敏胶涂层的原料中各组分按重量份数比由20~35份的丁基橡胶、20~30份的聚异丁烯、10~20份的无规聚丙烯、10~20份的环烷油、20~35份的碳酸钙、5~10份的PE蜡、1~2份1~3份的多元受阻酚型抗氧剂和1~3份的色料组成;
所述热熔压敏胶涂层的原料中各组分按重量份数比由25~35份的氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、10~20份的石油树脂、5~15份的天然萜烯树脂,10~20份的环烷油、15~25份的碳酸钙、3~8份的PE蜡、0.5~3份的AT-10抗氧剂和1~3份色料组成。
再进一步地,所述丁基橡胶热熔压敏胶涂层的原料中各组分按重量份数比由25份的丁基橡胶、25份的聚异丁烯、10份的无规聚丙烯,10份的环烷油、20份的碳酸钙、5份的PE蜡、3份的多元受阻酚型抗氧剂和2份的色料组成;
所述热熔压敏胶涂层的原料中各组分按重量份数比由30份的氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物,15份的石油树脂、10份的天然萜烯树脂、15份的环烷油、20份的碳酸钙、5份的PE蜡、2份的抗氧剂和3份的色料组成。
再进一步地,所述丁基橡胶的密度为0.92g/cm3;
所述聚异丁烯的分子量=300-500;
所述环烷油中环烷烃含量大于40%;
所述碳酸钙的目数为600-1250目;
所述石油树脂软化点的温度为100-115℃。
再进一步地,所述布基绝缘胶带中,丁基橡胶压敏胶涂层的质量为40~100g/m2,布基层质量为60~150g/m2,SEBS热熔压敏胶涂层的质量为50~150g/m2。
为了实现第二个目的,本发明还提供了一种上述述丁基橡胶热熔压敏胶布基绝缘胶带的制作方法,包括以下步骤:
1)按重量份数比称取丁基橡胶、聚异丁烯分,无规聚丙烯、环烷油、碳酸钙、PE蜡、多元受阻酚型抗氧剂和色料,备用;
2)将丁基橡胶、无规聚丙烯、一部分的碳酸钙、PE蜡、多元受阻酚型抗氧剂和色料在温度为100℃~150℃条件下捏合30~60min,再加入剩余部分的碳酸钙、聚异丁烯和环烷油捏合10~30min,过滤冷却,即得到丁基橡胶热熔压敏胶涂层;
3)按重量份数比称取氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、石油树脂、天然萜烯树脂、环烷油、碳酸钙、PE蜡、抗氧剂和色料,备用;
4)将氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、石油树脂、天然萜烯树脂、环烷油、碳酸钙、PE蜡、抗氧剂和色料在温度为140~160℃条件混合下搅拌6~8h,趁热过滤,冷却即得到热熔压敏胶涂层;
5)在温度为100℃~150℃条件下,将步骤2)得到的丁基橡胶热熔压敏胶涂层按涂布量为40~100g/m2涂布到布基层的一面,冷却后,再在温度为140~160℃条件下,将步骤4)得到的热熔压敏胶涂层按涂布量为50~150g/m2涂布到布基层的另一面,冷却后收母卷并分切即可得到所述丁基橡胶热熔压敏胶布基绝缘胶带。
作为优选方案,所述步骤5)中,丁基橡胶热熔压敏胶涂层涂布量与热熔压敏胶涂层的涂布量的比例为1:0.5~2。
本发明的有益效果在于:
本发明的丁基橡胶热熔压敏胶布基绝缘胶带由丁基橡胶热熔压敏胶涂层和SEBS热熔压敏胶涂层通过涂布在布基层上形成。其中丁基橡胶热熔压敏胶涂层能够起到密封、防水和抗老化的作用,而且能将绝缘胶带的绝缘耐电压由传统的1kV×1min提高到3kV×20min,绝缘性更好,超过了目前量使用最大的PVC电气绝缘胶带的绝缘强度。同时,本发明的布基绝缘胶带还提高了热熔压敏胶涂层的持粘、初粘和剥离力等胶粘性能,因此能满足-20℃-100℃的温度要求,耐温性好。通过本发明方法制备得到的丁基橡胶热熔压敏胶布基绝缘胶带质量好,不易脱胶,解卷方便不劈叉,而且成本低,适用于工业和民用,具有很强的实用性。
具体实施方式
为了更好地解释本发明,以下结合具体实施例进一步阐明本发明的主要内容,但本发明的内容不仅仅局限于以下实施例。
下述原料均购于市面
丁基橡胶的型号为1751,其密度为0.92g/cm3;
聚异丁烯PIB的分子量=300;
环烷油的型号为KN4010,环烷油中环烷烃含量大于40%;
碳酸钙的目数为1250目;
抗氧剂的型号为AT-10
石油树脂的型号为C5/C9,石油树脂的软化点的温度为100-115℃。
实施例1
丁基橡胶热熔压敏胶布基绝缘胶带1制备方法,包括以下步骤:
1)按重量份数比称取40份的丁基橡胶、30份的聚异丁烯分质量=300(PIB)、15份的无规聚丙烯、15份的环烷油KN4010、30份的碳酸钙1250目、10份的PE蜡、1.5份的多元受阻酚型抗氧剂和2份的色料,
2)丁基橡胶1751、无规聚丙烯、一部分的碳酸钙、PE蜡、多元受阻酚型抗氧剂和色料在100℃-150℃下进行捏合30min,再加入另一部分的碳酸钙、聚异丁烯和环烷油捏合30min,过滤冷却,即得到丁基橡胶热熔压敏胶涂层;
3)按重量份数称取40份氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、35份的石油树脂、15份的天然萜烯树脂、40份的环烷油KN4010、30份的碳酸钙1250目、5份的PE蜡、1份的AT-10抗氧剂和2份色料进行混合,在140-160℃下搅拌6-8小时,趁热过滤后冷却即可得到所述SEBS热熔压敏胶涂层;
4)将步骤(2)得到的丁基橡胶热熔压敏胶涂层按照质量为布基层的80g/m2涂布到布基层的一面,冷却后再将步骤(3)得到的SEBS热熔压敏胶涂层按照质量为布基的80g/m2涂布到布基层的另一面,所述布基层为针织布,冷却后收母卷并分切即得到所述丁基橡胶热熔压敏胶布基绝缘胶带1。
实施例2
丁基橡胶热熔压敏胶布基绝缘胶带2制备方法,包括以下步骤:
1)按重量份数称取30份的丁基橡胶1751、40份的聚异丁烯、20份的无规聚丙烯、10份的环烷油KN4010、20份的碳酸钙、5份的PE蜡、1份的多元受阻酚型抗氧剂和2份的色料;
2)丁基橡胶1751、无规聚丙烯、一部分的碳酸钙、PE蜡、多元受阻酚型抗氧剂和色料在100℃-150℃下进行捏合1h,再加入另一部分的碳酸钙、聚异丁烯和环烷油捏合30min,过滤冷却,即得到丁基橡胶热熔压敏胶涂层;
3)按重量份数称取35份氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、40份的C5/C9石油树脂、10份的天然萜烯树脂、30份的环烷油KN4010、25份的碳酸钙1250目、3份的PE蜡、1.5份的AT-10抗氧剂和2份的色料进行混合,在140-160℃下搅拌6-8小时,趁热过滤后冷却即可得到所述SEBS热熔压敏胶涂层;
4)将步骤(2)得到的丁基橡胶热熔压敏胶涂层按照质量为布基层的100g/m2涂布到布基层的一面,冷却后再将步骤(3)得到的SEBS热熔压敏胶涂层按照质量为布基的100g/m2涂布到布基层的另一面,所述布基层为棉布,冷却后收母卷并分切即可得到所述丁基橡胶热熔压敏胶布基绝缘胶带2。
实施例3
丁基橡胶热熔压敏胶布基绝缘胶带3制备方法,包括以下步骤:
1)按重量份数称取50份的丁基橡胶1751、40份的聚异丁烯、10份的无规聚丙烯、20份的环烷油KN4010、40份的碳酸钙、15份的PE蜡、1.5份的多元受阻酚型抗氧剂和2份的色料,
2)丁基橡胶1751、无规聚丙烯、一部分的碳酸钙、PE蜡、多元受阻酚型抗氧剂和色料在100℃-150℃下进行捏合30min,再加入另一部分的碳酸钙、聚异丁烯和环烷油捏合30min,过滤冷却,即得到丁基橡胶热熔压敏胶涂层;
3)按重量份数称取45份的氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、40份的C5/C9石油树脂、20份的天然萜烯树脂、50份的环烷油KN4010、40份的碳酸钙1250目、10份的PE蜡、1份的AT-10抗氧剂和2份的色料进行混合,在140-160℃下搅拌6-8小时,趁热过滤后冷却即可得到所述SEBS热熔压敏胶涂层;
4)将步骤(2)得到的丁基橡胶热熔压敏胶涂层按照质量为布基层的100g/m2涂布到布基层的一面,冷却后再将步骤(3)得到的SEBS热熔压敏胶涂层按照质量为布基的80g/m2涂布到布基层的另一面,所述布基层为针织布,冷却后收母卷并分切即可得到所述丁基橡胶热熔压敏胶布基绝缘胶带3。
实施例4
丁基橡胶热熔压敏胶布基绝缘胶带4制备方法,包括以下步骤:
1)按重量份数比称取25份的丁基橡胶、25份的聚异丁烯、10份的无规聚丙烯,10份的环烷油、20份的碳酸钙、5份的PE蜡、3份的多元受阻酚型抗氧剂和2份的色料;
2)将丁基橡胶、无规聚丙烯、一部分的碳酸钙、PE蜡、多元受阻酚型抗氧剂和色料在温度为100℃~150℃条件下捏合30~60min,再加入剩余部分的碳酸钙、聚异丁烯和环烷油捏合10~30min,过滤冷却,即得到丁基橡胶热熔压敏胶涂层;
3)按重量份数比称取30份的氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物,15份的石油树脂、10份的天然萜烯树脂、15份的环烷油、20份的碳酸钙、5份的PE蜡、2份的抗氧剂和3份的色料;
4)将氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、石油树脂、天然萜烯树脂、环烷油、碳酸钙、PE蜡、抗氧剂和色料在温度为140~160℃条件混合下搅拌6~8h,趁热过滤,冷却即得到热熔压敏胶涂层;
5)在温度为100℃~150℃条件下,将步骤2)得到的丁基橡胶热熔压敏胶涂层按涂布量为40~100g/m2涂布到布基层的一面,冷却后,再在温度为140~160℃条件下,将步骤4)得到的热熔压敏胶涂层按涂布量为50~150g/m2涂布到布基层的另一面,冷却后收母卷并分切即可得到所述丁基橡胶热熔压敏胶布基绝缘胶带4。
实施例5
本实施例与实施例4的制备方法基本相同,不同之处在于:
所述丁基橡胶热熔压敏胶涂层的原料中各组分按重量份数比由20份的丁基橡胶、40份的聚异丁烯、10份的无规聚丙烯、20份的环烷油、20~40份的碳酸钙、15份的PE蜡、1份的多元受阻酚型抗氧剂和3份的色料组成;
所述热熔压敏胶涂层的原料中各组分按重量份数比由20份的氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、40份的石油树脂、30份的天然萜烯树脂、10份的环烷油、40份的碳酸钙、10份的PE蜡、5份的AT-10抗氧剂和1份色料组成。
实施例6
本实施例与实施例4的制备方法基本相同,不同之处在于:
所述丁基橡胶热熔压敏胶涂层的原料中各组分按重量份数比由35份的丁基橡胶、30份的聚异丁烯、20份的无规聚丙烯、10份的环烷油、35份的碳酸钙、5份的PE蜡、1份的多元受阻酚型抗氧剂和1份的色料组成;
所述热熔压敏胶涂层的原料中各组分按重量份数比由25份的氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、20份的石油树脂、15份的天然萜烯树脂,10份的环烷油、25份的碳酸钙、3份的PE蜡、0.5份的AT-10抗氧剂和1份色料组成。
比较例1
(1)传统的压延型绝缘胶布带是将重量份数为烟片橡胶15份,松香20份,沥青15份,松节油5份,碳酸钙325目33份,凡士林10份,炭黑色料2份,在80℃-100℃下进行密炼10min,冷却后即可得到所述橡胶型压敏胶涂层;
(2)将步骤(1)得到的橡胶型压敏胶涂层按照质量为布基层的150g/m2压延到布基层的两面,冷却后再将压延后的布基,再进行一次压延,将80g/m2压延到布基层的一面,所述布基层为针织布,冷却后收母卷并分切即可得到所述压延型绝缘胶布带1。
比较例2
(1)单面布基绝缘胶布带将重量份数为甲基丙烯酸甲酯20份,丙烯酸丁酯30份,甲基丙烯酸15份,湿润剂3份,炭黑2份,过硫酸钾1份,滑石粉10份,余量为水,在80-90℃下反应8小时,冷却后过滤即可得到所述丙烯酸压敏胶涂层;
(2)将步骤(1)得到的丙烯酸压敏胶涂层按照质量为布基层的80g/m2涂布到黑色布基层的一面,所述布基层为浆染后的黑色针织布,冷却后收母卷并分切即可得到所述丙烯酸压敏胶布基绝缘胶带2。
表1各种实施例与比较案例的物理性能数据
上述实施例1-6中的丁基橡胶热熔压敏胶布基绝缘胶带1-6在具体使用时,只需像普通单面胶带一样,将丁基橡胶热熔压敏胶布基绝缘胶带直接缠绕在需要绝缘保护的物体上,然后用手稍稍使劲将其撕断,最后将胶带尾端用手按紧,防止翘头,使用方便,易撕断、不污染手指。不仅防水,而且绝缘耐电压可达3kV×20min。同时在-20℃~100℃无脱胶、老化现象。
丁基橡胶热熔压敏胶布基绝缘胶带1-6质量好,无脱胶、难解卷、劈叉和针眼等质量问题。从比较案例中看,1-2耐电压性能不高,很容易被击穿,导致应用领域较窄。特别是粘合性能差,满足不了低温环境或相对高温环境中的使用,极易脱落,造成事故。所以传统的绝缘胶布带市场份额一直被PVC胶带所挤占,市场不断萎缩。由于很多领域还是离不开布基绝缘胶带,加之布基有PVC胶带不可替代的物理性能,但传统的绝缘胶布带性能较差,导致用户很期盼一款综合性能优异的布基绝缘胶带问世。本发明所得的胶带解决了这些问题,相信市场前期较好。
其它未详细说明的部分均为现有技术。尽管上述实施例对本发明做出了详尽的描述,但它仅仅是本发明一部分实施例,而不是全部实施例,人们还可以根据本实施例在不经创造性前提下获得其他实施例,这些实施例都属于本发明保护范围。
Claims (7)
1.一种丁基橡胶热熔压敏胶布基绝缘胶带,其特征在于:所述丁基橡胶热熔压敏胶布基绝缘胶带依次由丁基橡胶热熔压敏胶涂层、布基层和热熔压敏胶涂层三层组成,其中,
所述丁基橡胶热熔压敏胶涂层的原料中各组分按重量份数比由20~50份的丁基橡胶、20~40份的聚异丁烯、10~20份的无规聚丙烯、10~20份的环烷油、20~40份的碳酸钙、5~15份的PE蜡、1~3份的多元受阻酚型抗氧剂和1~3份的色料组成;
所述热熔压敏胶涂层的原料中各组分按重量份数比由20~45份的氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、10~40份的石油树脂、5~30份的天然萜烯树脂、10~50份的环烷油、10~40份的碳酸钙、3~10份的PE蜡、0.5~5份的AT-10抗氧剂和1~3份色料组成。
2.根据权利要求1所述丁基橡胶热熔压敏胶布基绝缘胶带,其特征在于:所述丁基橡胶热熔压敏胶涂层的原料中各组分按重量份数比由20~35份的丁基橡胶、20~30份的聚异丁烯、10~20份的无规聚丙烯、10~20份的环烷油、20~35份的碳酸钙、5~10份的PE蜡、1~3份的多元受阻酚型抗氧剂和1~3份的色料组成;
所述热熔压敏胶涂层的原料中各组分按重量份数比由25~35份的氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、10~20份的石油树脂、5~15份的天然萜烯树脂,10~20份的环烷油、15~25份的碳酸钙、3~8份的PE蜡、0.5~3份的AT-10抗氧剂和1~3份色料组成。
3.根据权利要求2所述丁基橡胶热熔压敏胶布基绝缘胶带,其特征在于:所述丁基橡胶热熔压敏胶涂层的原料中各组分按重量份数比由25份的丁基橡胶、25份的聚异丁烯、10份的无规聚丙烯,10份的环烷油、20份的碳酸钙、5份的PE蜡、3份的多元受阻酚型抗氧剂和2份的色料组成;
所述热熔压敏胶涂层的原料中各组分按重量份数比由30份的氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物,15份的石油树脂、10份的天然萜烯树脂、15份的环烷油、20份的碳酸钙、5份的PE蜡、2份的抗氧剂和3份的色料组成。
4.根据权利要求1或2或3所述丁基橡胶热熔压敏胶布基绝缘胶带,其特征在于:所述丁基橡胶的密度为0.92g/cm3;
所述聚异丁烯的分子量=300-500;
所述环烷油中环烷烃含量大于40%;
所述碳酸钙的目数为600-1250目;
所述石油树脂软化点的温度为100-115℃。
5.根据权利要求1所述丁基橡胶热熔压敏胶布基绝缘胶带,其特征在于:所述布基绝缘胶带中,丁基橡胶压敏胶涂层的质量为40~100g/m2,布基层质量为60~150g/m2,SEBS热熔压敏胶涂层的质量为50~150g/m2。
6.一种权利要求1所述丁基橡胶热熔压敏胶布基绝缘胶带的制作方法,其特征在于:包括以下步骤:
1)按重量份数比称取丁基橡胶、聚异丁烯分,无规聚丙烯、环烷油、碳酸钙、PE蜡、多元受阻酚型抗氧剂和色料,备用;
2)将丁基橡胶、无规聚丙烯、一部分的碳酸钙、PE蜡、多元受阻酚型抗氧剂和色料在温度为100℃~150℃条件下捏合30~60min,再加入剩余部分的碳酸钙、聚异丁烯和环烷油捏合10~30min,过滤冷却,即得到丁基橡胶热熔压敏胶涂层;
3)按重量份数比称取氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、石油树脂、天然萜烯树脂、环烷油、碳酸钙、PE蜡、抗氧剂和色料,备用;
4)将氢化苯乙烯-丁二烯-苯乙烯嵌段共聚物、石油树脂、天然萜烯树脂、环烷油、碳酸钙、PE蜡、抗氧剂和色料在温度为140~160℃条件混合下搅拌6~8h,趁热过滤,冷却即得到热熔压敏胶涂层;
5)在温度为100℃~150℃条件下,将步骤2)得到的丁基橡胶热熔压敏胶涂层按涂布量为40~100g/m2涂布到布基层的一面,冷却后,再在温度为140~160℃条件下,将步骤4)得到的热熔压敏胶涂层按涂布量为50~150g/m2涂布到布基层的另一面,冷却后收母卷并分切即得到所述丁基橡胶热熔压敏胶布基绝缘胶带。
7.根据权利要求6所述丁基橡胶热熔压敏胶布基绝缘胶带的制作方法,其特征在于:所述步骤5)中,丁基橡胶热熔压敏胶涂层涂布量与热熔压敏胶涂层的涂布量的比例为1:0.5~2。
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