CN105061861A - 一种光纤用耐电痕护套料 - Google Patents

一种光纤用耐电痕护套料 Download PDF

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CN105061861A
CN105061861A CN201510476201.3A CN201510476201A CN105061861A CN 105061861 A CN105061861 A CN 105061861A CN 201510476201 A CN201510476201 A CN 201510476201A CN 105061861 A CN105061861 A CN 105061861A
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孟亮
余文辉
韩伟
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Abstract

本发明公开了一种光纤用耐电痕护套料，由下列重量份的原料制备制成：低密度聚乙烯50-55、EVA树脂13-15、尼龙69-12、氢氧化镁14-16、亚甲基双萘磺酸钠0.6-0.8、钛酸酯偶联剂1021.3-2、有机硅5-8、有机蒙脱土3-5、醋酸乙烯酯2-4、氟铝酸钾2-3、凡士林3-4、聚苯并咪唑4-5、二硬脂酸羟铝4-5、去离子水适量；本发明的护套材料具有良好的耐热、抗冲击、阻燃和高强等方面的性能，质量稳定性高，耐久性好，应用前景广泛。

Description

一种光纤用耐电痕护套料
技术领域
本发明涉及光纤护套料技术领域，尤其涉及一种光纤用耐电痕护套料及其制备方法。
背景技术
随着数据通讯工业的飞速发展，光纤作为数据传输的载体正得到广泛采用。光纤的铺设形式为埋地和架空，并随着城市网线的改造，大部分已转入地下。为了防止地下的光纤、光缆遭虫咬或者腐蚀，光纤和光缆的护套料应运而生。目前光纤、光缆护套料主要使用聚烯烃，具有质轻、弯曲强度大、摩擦系数小、密封性能好、耐腐蚀等特点，但是这种管材存在着极易燃烧的缺点。最初为了改善护套保护材料的阻燃性能，一般添加含有卤素的阻燃剂，此类光纤电缆在燃烧过程中会放出大量的烟雾和卤化氢气体，火灾中使人窒息而死，同时对仪器设备腐蚀性较大，因此低烟、低卤及无卤阻燃材料的研制和使用已是国内外光纤电缆及其他领域的发展方向之一。
无机无卤阻燃剂具有较强的极性和亲水性，而聚烯烃为非极性材料，两者之间的相容性差，界面难以形成良好的结合和粘结，特别是氢氧化镁氢氧化镁具有优良的阻燃、抑烟、阻滴、抗酸等多种功能，得到广泛的应用，但是氢氧化镁极性强，与树脂热膨胀系数不同，加工成型时热胀冷缩导致两相界面形成微细裂纹，这将导致材料的机械性能、防水性能、绝缘性能的下降，所以必须对氢氧化镁进行表面改性，使氢氧化镁在聚烯烃中具有较好的综合性能，在加工温度下具有良好的流动性和使用温度上兼具高的强度和韧性，并且不改变聚烯烃型材的抗冲击性能。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提供一种光纤用耐电痕护套料及其制备方法。
本发明是通过以下技术方案实现的：
一种光纤用耐电痕护套料，由下列重量份的原料制备制成：低密度聚乙烯50-55、EVA树脂13-15、尼龙69-12、氢氧化镁14-16、亚甲基双萘磺酸钠0.6-0.8、钛酸酯偶联剂1021.3-2、有机硅5-8、有机蒙脱土3-5、醋酸乙烯酯2-4、氟铝酸钾2-3、凡士林3-4、聚苯并咪唑4-5、二硬脂酸羟铝4-5、去离子水适量；
所述一种光纤用耐电痕护套料，由以下具体步骤制备制成：
（1）将氢氧化镁干燥后和亚甲基双萘磺酸钠混合胶体磨处理10-15min，再将钛酸酯偶联剂102用适量的乙醇稀释后，喷淋在处理后的氢氧化镁粉末上，在室温下低速捏合机中搅拌20-30min，混合均匀后升高温度至70-90°C，在800-1000转/分转速下缓慢加入有机硅和有机蒙脱土，搅拌40-60min后自然冷却后备用；
（2）先将低密度聚乙烯、EVA树脂和尼龙6加入混炼机中，在100-120°C温度下混炼6-12min，再加入偶氮二甲酰胺和尿素混合搅拌均匀备用；
（3）将醋酸乙烯酯加入2-3倍量的去离子水稀释，再加入二硬脂酸羟铝和聚苯并咪唑，于90W下超声处理6-10min，过滤后烘干再加入其余剩余成分混合，在低速搅拌机中搅拌均匀；
（4）将上述所有步骤制得的原料投到双螺杆挤出机中进行挤出造粒，双螺杆挤出机的温度设定为一区145-165°C，二区150-170°C，三区140-160°C，机头155-165°C，机模170-190°C，粒料经干燥、筛选、包装后即可。
本发明的优点是：本发明采用钛酸酯偶联剂处理氢氧化镁在其表面形成钛酸酯单分子膜，使氢氧化镁获得良好的分散性、润湿角和偶联效果，降低了表面能，增大了相容性，添加的有机硅和有机蒙脱土具有协同阻燃的作用，减少了氢氧化镁的填充量，保证氧指数的同时改善了材料的机械性能，并且增加了其在聚烯烃中的相容性，填料表面用醋酸乙烯酯处理加强了在聚烯烃中的相容性和易分散性，不会改变其抗冲击的性能，聚乙烯通过与EVA树脂、尼龙6复合混炼并加入发泡剂微发泡极大的提高了聚烯烃护套材料的硬度、强度和耐磨性能，添加的二硬脂酸羟铝和聚苯并咪唑能够增强材料的耐热性、导热性，提高了耐电痕的性质，本发明的护套材料具有良好的耐热、抗冲击、阻燃和高强等方面的性能，质量稳定性高，耐久性好，应用前景广泛。
具体实施方式
一种光纤用耐电痕护套料，由下列重量份（公斤）的原料制备制成：低密度聚乙烯50、EVA树脂13、尼龙69、氢氧化镁14、亚甲基双萘磺酸钠0.6、钛酸酯偶联剂1021.3、有机硅5、有机蒙脱土3、醋酸乙烯酯2、氟铝酸钾2、凡士林3、聚苯并咪唑4、二硬脂酸羟铝4、去离子水适量；
所述一种光纤用耐电痕护套料，由以下具体步骤制备制成：
（1）将氢氧化镁干燥后和亚甲基双萘磺酸钠混合胶体磨处理10min，再将钛酸酯偶联剂102用适量的乙醇稀释后，喷淋在处理后的氢氧化镁粉末上，在室温下低速捏合机中搅拌20min，混合均匀后升高温度至70°C，在800转/分转速下缓慢加入有机硅和有机蒙脱土，搅拌40min后自然冷却后备用；
（2）先将低密度聚乙烯、EVA树脂和尼龙6加入混炼机中，在100°C温度下混炼6min，再加入偶氮二甲酰胺和尿素混合搅拌均匀备用；
（3）将醋酸乙烯酯加入2倍量的去离子水稀释，再加入二硬脂酸羟铝和聚苯并咪唑，于90W下超声处理6min，过滤后烘干再加入其余剩余成分混合，在低速搅拌机中搅拌均匀；
（4）将上述所有步骤制得的原料投到双螺杆挤出机中进行挤出造粒，双螺杆挤出机的温度设定为一区145°C，二区150°C，三区140°C，机头155°C，机模170°C，粒料经干燥、筛选、包装后即可。
对实施例制备的光纤护套进行性能测试，测试结果如下：断裂强度为11.6Mpa，断裂伸长率为176%，极限氧指数为37%，体积电阻率为1.1×1014Ω.m，拉伸强度保留率（158°C,168h）为78%，断裂伸长率保留率（158°C,168h）为80%。

Claims (2)

1.一种光纤用耐电痕护套料，其特征在于，由下列重量份的原料制备制成：低密度聚乙烯50-55、EVA树脂13-15、尼龙69-12、氢氧化镁14-16、亚甲基双萘磺酸钠0.6-0.8、钛酸酯偶联剂1021.3-2、有机硅5-8、有机蒙脱土3-5、醋酸乙烯酯2-4、氟铝酸钾2-3、凡士林3-4、聚苯并咪唑4-5、二硬脂酸羟铝4-5、去离子水适量。
2.根据权利要求1所述一种光纤用耐电痕护套料，其特征在于，由以下具体步骤制备制成：
（1）将氢氧化镁干燥后和亚甲基双萘磺酸钠混合胶体磨处理10-15min，再将钛酸酯偶联剂102用适量的乙醇稀释后，喷淋在处理后的氢氧化镁粉末上，在室温下低速捏合机中搅拌20-30min，混合均匀后升高温度至70-90°C，在800-1000转/分转速下缓慢加入有机硅和有机蒙脱土，搅拌40-60min后自然冷却后备用；
（2）先将低密度聚乙烯、EVA树脂和尼龙6加入混炼机中，在100-120°C温度下混炼6-12min，再加入偶氮二甲酰胺和尿素混合搅拌均匀备用；
（3）将醋酸乙烯酯加入2-3倍量的去离子水稀释，再加入二硬脂酸羟铝和聚苯并咪唑，于90W下超声处理6-10min，过滤后烘干再加入其余剩余成分混合，在低速搅拌机中搅拌均匀；
（4）将上述所有步骤制得的原料投到双螺杆挤出机中进行挤出造粒，双螺杆挤出机的温度设定为一区145-165°C，二区150-170°C，三区140-160°C，机头155-165°C，机模170-190°C，粒料经干燥、筛选、包装后即可。
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CN106543707A (zh) * 2016-10-28 2017-03-29 上海耐特复合材料制品有限公司 耐低温超韧性尼龙复合材料及其制备方法

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CN103897256A (zh) * 2014-03-28 2014-07-02 江苏领瑞新材料科技有限公司 一种4g光缆用高速低收缩低烟无卤紧套料及其制备方法
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CN103897256A (zh) * 2014-03-28 2014-07-02 江苏领瑞新材料科技有限公司 一种4g光缆用高速低收缩低烟无卤紧套料及其制备方法
CN104292601A (zh) * 2014-09-25 2015-01-21 江苏金聚合金材料有限公司 一种耐油低烟无卤阻燃电缆料及其制备方法
CN104530519A (zh) * 2014-11-21 2015-04-22 哈尔滨理工大学 一种无卤低烟阻燃电缆料及其制备方法

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CN106543707B (zh) * 2016-10-28 2018-02-02 上海耐特复合材料制品有限公司 耐低温超韧性尼龙复合材料及其制备方法

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