CN108178865A - 一种聚吡啶导电缠绕膜及其制备方法 - Google Patents
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Abstract
本发明公开了一种聚吡啶导电缠绕膜,它是由下述重量份的原料组成的:LLDPE120‑130、吡啶35‑40、引发剂溶液10‑13、吡啶硫酮锌1‑2、硫化亚锡0.1‑0.4、2‑硫醇基苯骈咪唑0.5‑1、四氢糠醇2‑3、柠檬酸三丁酯3‑4、甲基三乙氧基硅烷1‑2、硅微粉13‑20。本发明将导电聚合物采用硅烷偶联剂改性处理,有效的提高了聚合物在LLDPE基体间的分散相容性,从而提高了成品缠绕膜的力学稳定性强度,本发明的薄膜具有很好的耐热稳定性、力学稳定性和导电性,综合性能优越。
Description
技术领域
本发明属于材料领域,具体涉及一种聚吡啶导电缠绕膜及其制备方法。
背景技术
缠绕膜,又叫拉伸膜、热收缩膜,国内最早以PVC为基材,DOA为增塑剂兼起自粘作用生产PVC缠绕膜。由于环保问题、成本高(相对PE比重大,单位包装面积少)、拉伸性差等原因,当1994~1995年国内开始生产PE拉伸膜时逐步被淘汰。PE拉伸膜先是以EVA为自粘材料,但其成本高,又有味道,后发展用PIB、VLDPE为自粘材料,基材现在以LLDPE为主,缠绕膜可以在产品周围形成一个很轻的、保护性外表,从而达到防尘、防油、防潮、防水、防盗的目的。尤为重要的是缠绕膜包装使包装物品均匀受力,避免受力不均对物品造成损伤,这是传统包装方式(捆扎、打包、胶带等包装)无法做到的,利用缠绕膜进行产品包装,可以有效降低使用成本,采用缠绕膜只有原本箱包装的15%左右,热收缩膜的35%左右,纸箱包装的50%左右。同时可以降低工人劳动强度,提高包装效率以及包装档次,拉伸膜的应用领域非常之广,而国内很多的领域还未涉及,已涉及的许多领域也未普遍使用,随着应用领域的扩大,拉伸膜的用量必将大大增长,其市场潜力是不可估量的。所以我们有必要大力推广拉伸膜的生产和应用;
随着社会的不断发展,新型材料的研究也越来越受到重视,目前市售的缠绕膜功能性单一,在包覆需要导电的材料时,由于传统的缠绕膜不具有导电性,这样就容易影响包覆材料的导电工作,因此,本发明研究一种具有导电性的特殊缠绕膜,当需要导电工作时,可以不用将缠绕膜取下也可以进行包覆材料的导电工作。
发明内容
本发明的目的在于针对现有技术的缺陷和不足,提供一种聚吡啶导电缠绕膜及其制备方法。
为实现上述目的,本发明采用以下技术方案:
一种聚吡啶导电缠绕膜,它是由下述重量份的原料组成的:
LLDPE120-130、吡啶35-40、引发剂溶液10-13、吡啶硫酮锌1-2、硫化亚锡0.1-0.4、2-硫醇基苯骈咪唑0.5-1、四氢糠醇2-3、柠檬酸三丁酯3-4、甲基三乙氧基硅烷1-2、硅微粉13-20。
所述的引发剂溶液是由下述重量份的原料组成的:
过硫酸铵1-2、椰油酸二乙醇酰胺0.6-1、聚苯并咪唑0.1-0.2、异丙醇7-9;
取聚苯并咪唑,加入到异丙醇中,升高温度为65-70℃,保温搅拌10-20分钟;
取过硫酸铵,加入到其重量10-15倍的去离子水中,搅拌均匀,与上述聚苯并咪唑的异丙醇溶液共混,加入椰油酸二乙醇酰胺,超声2-3分钟,即得所述引发剂溶液。
所述的聚吡啶导电缠绕膜的制备方法,包括以下步骤:
(1)取2-硫醇基苯骈咪唑,加入到其重量20-30倍的无水乙醇中,搅拌均匀,加入吡啶硫酮锌,搅拌均匀,得醇分散液;
(2)取硅微粉、四氢糠醇混合,加入到混合料重量10-15倍的去离子水中,搅拌均匀,得硅微粉溶液;
(3)取上述硅微粉溶液、醇分散液混合,搅拌均匀,加入甲基三乙氧基硅烷,在65-70℃下保温搅拌1-2小时,得硅烷醇溶液;
(4)取吡啶,加入到上述硅烷醇溶液中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为75-80℃,加入上述引发剂溶液,保温搅拌3-4小时,出料冷却,得聚吡啶硅烷醇溶液;
(5)取硫化亚锡,加入到上述聚吡啶硅烷醇溶液中,搅拌均匀,过滤,将沉淀水洗,常温干燥,与柠檬酸三丁酯、LLDPE混合,搅拌均匀,熔融,流延成型,即得所述聚吡啶导电缠绕膜。
本发明的优点:
本发明以过硫酸铵为主体引发剂,以椰油酸二乙醇酰胺为分散剂,并引入聚苯并咪唑作为功能性组份,其具有很高的黏度和耐热稳定性,能够有效的提高缠绕膜的缠绕效果,防止包装物脱落,本发明以吡啶为单体,通过聚合了导电聚合物,其可以赋予传统薄膜不具有的导电性能,将该薄膜用于新领域,扩大的薄膜的使用范围,本发明将导电聚合物采用硅烷偶联剂改性处理,有效的提高了聚合物在LLDPE基体间的分散相容性,从而提高了成品缠绕膜的力学稳定性强度,本发明的薄膜具有很好的耐热稳定性、力学稳定性和导电性,综合性能优越。
具体实施方式
实施例1
一种聚吡啶导电缠绕膜,它是由下述重量份的原料组成的:
LLDPE130、吡啶40、引发剂溶液13、吡啶硫酮锌2、硫化亚锡0.4、2-硫醇基苯骈咪唑1、四氢糠醇3、柠檬酸三丁酯4、甲基三乙氧基硅烷2、硅微粉20。
所述的引发剂溶液是由下述重量份的原料组成的:
过硫酸铵2、椰油酸二乙醇酰胺1、聚苯并咪唑0.2、异丙醇9;
取聚苯并咪唑,加入到异丙醇中,升高温度为70℃,保温搅拌20分钟;
取过硫酸铵,加入到其重量15倍的去离子水中,搅拌均匀,与上述聚苯并咪唑的异丙醇溶液共混,加入椰油酸二乙醇酰胺,超声3分钟,即得所述引发剂溶液。
所述的聚吡啶导电缠绕膜的制备方法,包括以下步骤:
(1)取2-硫醇基苯骈咪唑,加入到其重量30倍的无水乙醇中,搅拌均匀,加入吡啶硫酮锌,搅拌均匀,得醇分散液;
(2)取硅微粉、四氢糠醇混合,加入到混合料重量15倍的去离子水中,搅拌均匀,得硅微粉溶液;
(3)取上述硅微粉溶液、醇分散液混合,搅拌均匀,加入甲基三乙氧基硅烷,在70℃下保温搅拌2小时,得硅烷醇溶液;
(4)取吡啶,加入到上述硅烷醇溶液中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为80℃,加入上述引发剂溶液,保温搅拌4小时,出料冷却,得聚吡啶硅烷醇溶液;
(5)取硫化亚锡,加入到上述聚吡啶硅烷醇溶液中,搅拌均匀,过滤,将沉淀水洗,常温干燥,与柠檬酸三丁酯、LLDPE混合,搅拌均匀,熔融,流延成型,即得所述聚吡啶导电缠绕膜。
实施例2
一种聚吡啶导电缠绕膜,它是由下述重量份的原料组成的:
LLDPE120、吡啶35、引发剂溶液10、吡啶硫酮锌1、硫化亚锡0.1、2-硫醇基苯骈咪唑0.5、四氢糠醇2、柠檬酸三丁酯3、甲基三乙氧基硅烷1、硅微粉13。
所述的引发剂溶液是由下述重量份的原料组成的:
过硫酸铵1、椰油酸二乙醇酰胺0.6、聚苯并咪唑0.1、异丙醇7;
取聚苯并咪唑,加入到异丙醇中,升高温度为65℃,保温搅拌10分钟;
取过硫酸铵,加入到其重量10倍的去离子水中,搅拌均匀,与上述聚苯并咪唑的异丙醇溶液共混,加入椰油酸二乙醇酰胺,超声2分钟,即得所述引发剂溶液。
所述的聚吡啶导电缠绕膜的制备方法,包括以下步骤:
(1)取2-硫醇基苯骈咪唑,加入到其重量20倍的无水乙醇中,搅拌均匀,加入吡啶硫酮锌,搅拌均匀,得醇分散液;
(2)取硅微粉、四氢糠醇混合,加入到混合料重量10倍的去离子水中,搅拌均匀,得硅微粉溶液;
(3)取上述硅微粉溶液、醇分散液混合,搅拌均匀,加入甲基三乙氧基硅烷,在65℃下保温搅拌1小时,得硅烷醇溶液;
(4)取吡啶,加入到上述硅烷醇溶液中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为75℃,加入上述引发剂溶液,保温搅拌3小时,出料冷却,得聚吡啶硅烷醇溶液;
(5)取硫化亚锡,加入到上述聚吡啶硅烷醇溶液中,搅拌均匀,过滤,将沉淀水洗,常温干燥,与柠檬酸三丁酯、LLDPE混合,搅拌均匀,熔融,流延成型,即得所述聚吡啶导电缠绕膜。
性能测试:
断裂拉伸强度:23-30MPa;
断裂伸长率:300-400%;
热收缩率(130℃×20秒)MD:>66。
Claims (3)
1.一种聚吡啶导电缠绕膜,其特征在于,它是由下述重量份的原料组成的:
LLDPE120-130、吡啶35-40、引发剂溶液10-13、吡啶硫酮锌1-2、硫化亚锡0.1-0.4、2-硫醇基苯骈咪唑0.5-1、四氢糠醇2-3、柠檬酸三丁酯3-4、甲基三乙氧基硅烷1-2、硅微粉13-20。
2.根据权利要求1所述的一种聚吡啶导电缠绕膜,其特征在于,所述的引发剂溶液是由下述重量份的原料组成的:
过硫酸铵1-2、椰油酸二乙醇酰胺0.6-1、聚苯并咪唑0.1-0.2、异丙醇7-9;
取聚苯并咪唑,加入到异丙醇中,升高温度为65-70℃,保温搅拌10-20分钟;
取过硫酸铵,加入到其重量10-15倍的去离子水中,搅拌均匀,与上述聚苯并咪唑的异丙醇溶液共混,加入椰油酸二乙醇酰胺,超声2-3分钟,即得所述引发剂溶液。
3.一种如权利要求1所述的聚吡啶导电缠绕膜的制备方法,其特征在于,包括以下步骤:
(1)取2-硫醇基苯骈咪唑,加入到其重量20-30倍的无水乙醇中,搅拌均匀,加入吡啶硫酮锌,搅拌均匀,得醇分散液;
(2)取硅微粉、四氢糠醇混合,加入到混合料重量10-15倍的去离子水中,搅拌均匀,得硅微粉溶液;
(3)取上述硅微粉溶液、醇分散液混合,搅拌均匀,加入甲基三乙氧基硅烷,在65-70℃下保温搅拌1-2小时,得硅烷醇溶液;
(4)取吡啶,加入到上述硅烷醇溶液中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为75-80℃,加入上述引发剂溶液,保温搅拌3-4小时,出料冷却,得聚吡啶硅烷醇溶液;
(5)取硫化亚锡,加入到上述聚吡啶硅烷醇溶液中,搅拌均匀,过滤,将沉淀水洗,常温干燥,与柠檬酸三丁酯、LLDPE混合,搅拌均匀,熔融,流延成型,即得所述聚吡啶导电缠绕膜。
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