CN112778915B - 一种弹性体复合胶带及其制备方法 - Google Patents
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Abstract
本发明提供一种弹性体复合胶带及其制备方法,其中,该弹性体复合胶带包括增强层和粘接层,所述增强层的原材料按重量份计算包括:三元乙丙橡胶50‑150份,丁基橡胶100份,聚烯烃弹性体30‑80份,增粘树脂5‑10份,填料150‑250份,加工助剂0.5‑10份,增塑剂10‑30份;所述粘接层材料按重量份计算包括丁基橡胶100份,聚异丁烯80‑150份,填料150‑250份,增塑剂10‑30份,增粘树脂50‑200份,加工助剂0.5‑10份。本发明技术方案的弹性体复合胶带的增强层在三元乙丙橡胶的基础上加入丁基橡胶和聚烯烃弹性体,使该弹性体复合胶带除了具有良好的防水性、绝缘性,同时还具有优异的耐候性、粘结性、耐老化性、耐高低温性。
Description
技术领域
本发明涉及材料技术领域,特别涉及一种弹性体复合胶带及其制备方法。
背景技术
防水绝缘胶带一般用于电线接驳、电缆金属接头防护,电气绝缘防护等应用领域。电线、电缆这些领域除了对胶带的绝缘性要求严苛,对防水性能要求同样严格。
目前,市场上的防水绝缘胶带一般由双层结构构成,一层基于三元乙丙橡胶的增强层和一层基于丁基橡胶的粘接层组成,经过多层缠绕,增强层与粘接层相互融合,形成一体化的绝缘材料。但是这种材料由于是三元乙丙橡胶与丁基橡胶粘接而成,耐高低温性能较差,两者之间随着长时间阳光暴晒,海水、河水、雨水侵蚀,粘接强度、绝缘性能逐渐下降。而且,增强层主要是三元乙丙橡胶,材质较软,容易被坚硬物划伤、刮破,这也会影响胶带的粘接性、绝缘性。
发明内容
本发明的主要目的是提供一种弹性体复合胶带,旨在解决现有防水绝缘胶带性能不好的问题。
为实现上述目的,本发明提出一种弹性体复合胶带,包括增强层和与所述增强层贴合的粘接层,所述增强层的原料按重量份计算,包括:
所述粘接层的原料按重量份计算,包括:
可选地,所述增强层和所述粘接层的原料按重量份计算,还分别包括:
防老剂, 0.5-10份;
抗氧剂, 0.5-10份。
可选地,所述聚烯烃弹性体的邵氏硬度不小于75。
可选地,所述增粘树脂选自萜烯树脂T-100、S-125中的一种或两种。
可选地,所述加工助剂选自硬脂酸、硬脂酸锌中的一种或两种。
可选地,所述增塑剂选自白油、石蜡油2280、石蜡油300、石蜡油25110中的一种或多种。
可选地,所述防老剂选自防老剂RD、防老剂MB中的一种或两种。
可选地,所述填料选自高岭土、碳酸钙、滑石粉、陶土、炭黑中的一种或多种。
可选地,所述抗氧剂为抗氧剂1010。
本发明还提出一种弹性体复合胶带的制备方法,包括以下步骤:
将按重量份算的增强层材料三元乙丙橡胶50-150份、丁基橡胶100份、聚烯烃弹性体30-80份、增粘树脂5-10份、填料150-250份、加工助剂0.5-10份、增塑剂10-30份放入密炼机密炼,密炼至100-120℃出锅;
出锅后开炼机上出片,裁剪成条状备用;
用挤出机挤出增强层胶带,挤出温度120-140℃,并上卷;
将按重量份算的粘接层材料丁基橡胶100份、填料150-250份、加工助剂0.5-10份加入密炼机密炼,密炼至95-120℃出锅,制备成基胶;
将所述基胶加入捏合机,再加入增塑剂10-30份、增粘树脂50-200份、聚异丁烯80-150份,抽真空捏合,捏合温度为120-140℃,制备成粘接胶备用;
用挤出机挤出粘接层,挤出温度80-100℃,同时贴合上所述增强层胶带,经过滚压、上卷,制备成所述弹性体复合胶带。
本发明技术方案的弹性体复合胶带的增强层在三元乙丙橡胶的基础上加入丁基橡胶和聚烯烃弹性体,加入丁基橡胶可以提高与粘接层的粘接强度,聚烯烃弹性体其高分子量聚烯烃的分子量大于500万、邵氏硬度不小于65,这增加了胶带材料的硬度,使其不易被划伤;同时,聚烯烃弹性体有着优异的耐高低温、耐老化性、耐臭氧性,加入聚烯烃弹性体对于拉伸强度、撕裂强度、断裂伸长率等主要力学性能都有很大程度的提高,而且加入聚烯烃弹性体使共混后材料耐高低温增强,使复合胶带的工作温度范围拓宽。本发明提供的一种弹性体复合胶带除了具有良好的防水性、绝缘性,同时还具有优异的耐候性、粘结性、耐老化性、耐高低温性。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图示出的结构获得其他的附图。
图1为本发明弹性体复合胶带的制备方法的流程示意图。
本发明目的的实现、功能特点及优点将结合实施例,参照附图做进一步说明。
具体实施方式
下面将结合本发明实施例中的附图,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的一部分实施例,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作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。
本发明提出一种弹性体复合胶带,该弹性体复合胶带具有良好的防水性、绝缘性,同时还具有优异的耐候性、粘结性、耐老化性、耐高低温性。
在本发明实施例中,提出一种弹性体复合胶带,包括增强层和与所述增强层贴合的粘接层,所述增强层的原料按重量份计算,包括:
所述粘接层的原料按重量份计算,包括:
本发明技术方案的弹性体复合胶带的增强层在三元乙丙橡胶的基础上加入丁基橡胶和聚烯烃弹性体,加入丁基橡胶可以提高与粘接层的粘接强度,聚烯烃弹性体其高分子量聚烯烃的分子量大于500万、邵氏硬度不小于65,这增加了胶带材料的硬度,使其不易被划伤;同时,聚烯烃弹性体有着优异的耐高低温、耐老化性、耐臭氧性,加入聚烯烃弹性体对于拉伸强度、撕裂强度、断裂伸长率等主要力学性能都有很大程度的提高,而且加入聚烯烃弹性体使共混后材料耐高低温增强,使复合胶带的工作温度范围拓宽。本发明提供的一种弹性体复合胶带除了具有良好的防水性、绝缘性,同时还具有优异的耐候性、粘结性、耐老化性、耐高低温性。
聚烯烃弹性体(Polyolefin elastomer,POE)具有耐老化、耐臭氧、耐化学介质等优异性能。POE之所以具有优异性能,可实现高速挤出,与以下特点有关:(1)辛烯的柔软链卷曲结构和结晶的乙烯链作为物理交联点,使其具有优异的韧性又具有良好的加工性;(2)相对分子质量分布窄,与聚烯烃相容性好,具有较佳的流动性;(3)没有不饱和双键,耐候性优于其它弹性体;(4)较强的剪切敏感性和溶体强度,可实现高挤出,提高产量;(5)良好的流动性可改善填料的分散效果,同时亦可提高制品的熔接痕强度。
本发明中,增强层和粘接层的主要成分相似,使得增强层和粘接层贴合紧密,在长期使用过程中,复合带多层缠绕形成一体化,能够有效保证密封防水效果。
可选地,所述增强层和所述粘接层的原料按重量份计算,还分别包括:
防老剂, 0.5-10份;
抗氧剂, 0.5-10份。
可选地,所述聚烯烃弹性体的邵氏硬度不小于75。
可选地,所述增粘树脂选自萜烯树脂T-100、萜烯树脂S-125中的一种或两种。
可选地,所述加工助剂选自硬脂酸、硬脂酸锌中的一种或两种。
可选地,所述增塑剂选自白油、石蜡油2280、石蜡油300、石蜡油25110中的一种或多种。
可选地,所述防老剂选自防老剂RD、防老剂MB中的一种或两种。
可选地,所述填料选自高岭土、碳酸钙、滑石粉、陶土、炭黑中的一种或多种。
可选地,所述聚异丁烯选自PB1300、PB2400中的一种或两种。
可选地,所述抗氧剂为抗氧剂1010。
本发明还提出一种弹性体复合胶带的制备方法,请参阅图1,包括:
将按重量份算的增强层材料三元乙丙橡胶50-150份、丁基橡胶100份、聚烯烃弹性体30-80份、增粘树脂5-10份、填料150-250份、加工助剂0.5-10份、增塑剂10-30份放入密炼机密炼,密炼至100-120℃出锅;
出锅后开炼机上出片,裁剪成条状备用;
用挤出机挤出增强层胶带,挤出温度120-140℃,并上卷;
将按重量份算的粘接层材料丁基橡胶100份、填料150-250份、加工助剂0.5-10份加入密炼机密炼,密炼至95-120℃出锅,制备成基胶;
将所述基胶加入捏合机,再加入增塑剂10-30份、增粘树脂50-200份、聚异丁烯80-150份,抽真空捏合,捏合温度为120-140℃,制备成粘接胶备用;
用挤出机挤出粘接层,挤出温度80-100℃,同时贴合上所述增强层胶带,经过滚压、上卷,制备成所述弹性体复合胶带。
优选的,在上述制备方法中,按重量份计,增强层材料还包括防老剂0.5-10份、抗氧剂0.5-10份;粘接层材料还包括防老剂0.5-10份、抗氧剂0.5-10份,以防止材料老化和氧化。
下面将结合具体实施例对本发明的实施方案进行详细描述,但是本领域技术人员将会理解,下列实施例仅用于说明本发明,而不应视为限制本发明的范围。实施例中未注明具体条件者,按照常规条件或制造商建议的条件进行。所用试剂或仪器未注明生产厂商者,均为可以通过市售购买获得的常规产品。
实施例1
实施例1的弹性体复合胶带,增强层材料按重量份计算包括:丁基橡胶100份、三元乙丙橡胶50份、POE 30份、5份萜烯树脂S-125、150份碳酸钙、10份石蜡油2280、2份硬脂酸、1份防老剂MB、1份抗氧剂1010。
粘接层材料按重量份计算包括:丁基橡胶100份、80份PB2400、150份碳酸钙、10份石蜡油2280、50份萜烯树脂S-125、2份硬脂酸、1份防老剂MB、1份抗氧剂1010。
本实施例的弹性体复合胶带的制备方法,包括:
将按重量份算的增强层材料三元乙丙橡胶50份、丁基橡胶100份、聚烯烃弹性体30份、5份萜烯树脂S-125、150份碳酸钙、10份石蜡油2280、2份HST、1份防老剂MB、1份抗氧剂1010放入密炼机密炼,密炼至100-120℃出锅;
出锅后开炼机上出片,裁剪成条状备用;
用挤出机挤出增强层胶带,挤出温度120-140℃,并上卷;
将按重量份算的粘接层材料丁基橡胶100份、150份碳酸钙、2份硬脂酸、1份防老剂MB、1份抗氧剂1010加入密炼机密炼,密炼至95-120℃出锅,制备成基胶;
将所述基胶加入捏合机,再加入10份石蜡油2280、50份萜烯树脂S-125、80份PB2400,抽真空捏合,捏合温度为120-140℃,制备成粘接胶备用;
用挤出机挤出粘接层,挤出温度80-100℃,同时贴合上所述增强层胶带,经过滚压、上卷,制备得到实施例1的弹性体复合胶带。
各实施例的弹性体复合胶带和对比例的弹性体复合胶带的增强层和粘接层的材料配方分别如表1和表2所示,其中,对比例1的弹性体复合胶带的增强层中没有聚烯烃弹性体,对比例2的弹性体复合胶带的增强层中仅有10份聚烯烃弹性体,对比例3的弹性体复合胶带的增强层中没有丁基橡胶,对比例4的弹性体复合胶带的增强层中没有丁基橡胶和聚烯烃弹性体,根据表1和表2的配方,并参照实施例1的制备方法分别制备得到其他实施例2至实施例23的弹性体复合胶带以及对比例1至对比例4的弹性体复合胶带。
表1实施例1#-23#及对比例的增强层配方
表2实施例1#-23#及对比例的粘接层配方
性能测试
对上述得到的实施例1至实施例23的弹性体复合胶带,以及对比例1至对比例4的弹性体复合胶带分别进行性能测试,包括拉伸强度、断裂伸长率、击穿强度、180°剥离强度和防水性能测试,以及在130℃,168h条件下的耐热应力开裂情况,和耐紫外性能,测试结果如表3所示。根据表3的结果可知,加入聚烯烃弹性体的弹性体复合胶带拉伸强度、撕裂强度、断裂伸长率等主要力学性能都有很大程度的提高,而且加入聚烯烃弹性体的弹性体复合胶带共混后材料耐高低温增强,使复合胶带的工作温度范围拓宽,在高温情况下均未发生开裂的情况。而与实施例20相比,对比例1未加入聚烯烃弹性体,对比例2仅加入少量聚烯烃弹性体,其制备所得的弹性体复合胶带拉伸强度较低,耐高温性能均较差,证明本发明方案的弹性体复合胶带性能更好。进一步地,对比例3未加入丁基橡胶,其制备所得的复合胶带,其力学性能和剥离强度测试性能低,粘接性能较差;对比例4未加入丁基橡胶和聚烯烃弹性体,其制备所得的复合胶带,其力学性能、耐候性和粘接性能均较差。
表3.各实施例和对比例的弹性体复合胶带性能测试结果
以上所述仅为本发明的可选实施例,并非因此限制本发明的专利范围,凡是在本发明的发明构思下,利用本发明说明书及附图内容所作的等效结构变换,或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。
Claims (9)
1.一种弹性体复合胶带,其特征在于,包括增强层和与所述增强层贴合的粘接层,所述增强层的原料按重量份计算,包括:
三元乙丙橡胶, 50-150份;
丁基橡胶, 100份;
聚烯烃弹性体, 30-80份,所述聚烯烃弹性体的分子量大于500 万,邵氏硬度65-85;
增粘树脂, 5-10份;
填料, 150-250份;
加工助剂, 0.5-10份;
增塑剂, 10-30份;
所述粘接层的原料按重量份计算,包括:
丁基橡胶, 100份;
聚异丁烯, 80-150份;
填料, 150-250份;
增塑剂, 10-30份;
增粘树脂, 50-200份;
加工助剂, 0.5-10份;
所述增强层和所述粘接层的原料按重量份计算,还分别包括:
防老剂, 0.5-10份;
抗氧剂, 0.5-10份。
2.如权利要求1所述的一种弹性体复合胶带,其特征在于,所述聚烯烃弹性体的邵氏硬度为75-85。
3.如权利要求2所述的一种弹性体复合胶带,其特征在于,所述增粘树脂选自萜烯树脂T-100、S-125中的一种或两种。
4.如权利要求3所述的一种弹性体复合胶带,其特征在于,所述加工助剂选自硬脂酸、硬脂酸锌中的一种或两种。
5.如权利要求4所述的一种弹性体复合胶带,其特征在于,所述增塑剂选自白油、石蜡油2280、石蜡油300、石蜡油25110中的一种或多种。
6.如权利要求5所述的一种弹性体复合胶带,其特征在于,所述防老剂选自防老剂RD、防老剂MB中的一种或两种。
7.如权利要求6所述的一种弹性体复合胶带,其特征在于,所述填料选自高岭土、碳酸钙、滑石粉、陶土、炭黑中的一种或多种。
8.如权利要求7所述的一种弹性体复合胶带,其特征在于,所述抗氧剂为抗氧剂1010。
9.一种弹性体复合胶带的制备方法,其特征在于,包括以下步骤:
将按重量份算的增强层材料三元乙丙橡胶50-150份、丁基橡胶100份、聚烯烃弹性体30-80份、增粘树脂5-10份、填料150-250份、加工助剂0.5-10份、增塑剂10-30份放入密炼机密炼,密炼至100-120℃出锅;
出锅后开炼机上出片,裁剪成条状备用;
用挤出机挤出增强层胶带,挤出温度120-140℃,并上卷;
将按重量份算的粘接层材料丁基橡胶100份、填料150-250份、加工助剂0.5-10份加入密炼机密炼,密炼至95-120℃出锅,制备成基胶;
将所述基胶加入捏合机,再加入增塑剂10-30份、增粘树脂50-200份、聚异丁烯80-150份,抽真空捏合,捏合温度为120-140℃,制备成粘接胶备用;
用挤出机挤出粘接层,挤出温度80-100℃,同时贴合上所述增强层胶带,经过滚压、上卷,制备成所述弹性体复合胶带。
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