CN105968607A - 一种使用寿命长的聚氯乙烯发泡管 - Google Patents

一种使用寿命长的聚氯乙烯发泡管 Download PDF

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CN105968607A
CN105968607A CN201610167171.2A CN201610167171A CN105968607A CN 105968607 A CN105968607 A CN 105968607A CN 201610167171 A CN201610167171 A CN 201610167171A CN 105968607 A CN105968607 A CN 105968607A
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吴铭
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Maanshan Jinsheng Industrial Design Co Ltd
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Abstract

本发明公开了一种使用寿命长的聚氯乙烯发泡管，由以下重量份的原料制备制成：聚丙烯腈纤维3‑3.5、香蕉叶20‑25、0.4%硅烷偶联剂Si691‑1.5、偶氮二甲酰胺1.5‑2、碳酸氢钠5‑6、氧化锌0.2‑0.3、硝酸稀土0.3‑0.5、钛白粉2‑3、凡士林3‑4、氯磺化聚乙烯胶2‑3、硬脂酸锌1‑2、聚氯乙烯100‑110、石棉粉1.5‑2、羟丙基纤维素0.6‑0.8、氯化石蜡1‑2、丁苯橡胶3‑4、去离子水适量；本发明的制备方法使管材之间的力学强度、韧性都得到了很大的提高，另外，还具有优良的抗氧化、隔热、耐高温、耐腐蚀等特性，原料来源广泛，成本低，可大规模生产，值得推广。

Description

一种使用寿命长的聚氯乙烯发泡管
技术领域
本发明涉及发泡聚氯乙烯技术领域，尤其涉及一种使用寿命长的聚氯乙烯发泡管。
背景技术
排风设备中输送气体的管道称为风管，它把系统中的各种设备或部件连成了一个整体。风管通常用表面光滑的材料制作例如聚氯乙烯管。聚氯乙烯是五大通用塑料之一，在建材、包装等诸多行业有着广泛的用途。聚氯乙烯发泡材料由于具有轻质、隔热、隔音、高比强度、绝缘等特点更备受青睐，然而发泡材料在带来成本降低的同时，机械性能下降，极大的限制了PVC发泡材料的应用。《聚氯乙烯-蒙脱土发泡复合材料的研究》中利用季铵盐、季膦盐和磷酸酯类插层剂与硅烷偶联剂并用，制备改性蒙脱土，结果表明当蒙脱土份数在1-3phr时，压缩性能、拉伸性能、弯曲性能都有提高，热变形温度和阻燃性随着蒙脱土份数的增加而提高。但是蒙脱土加入过量，在基体中团聚而使发泡材料质量下降，并且该发泡材料的拉伸性能、强度、阻燃性、抗化学腐蚀能力均有待提高。
我国是世界香蕉主产国之一，每年可产香蕉五百百万吨供人们享用，但是伴随着产生的香蕉韧皮、香蕉叶、香蕉假茎等副产品却没有得到应用的开发应用，只有少部分被加工成绳索、麻袋、手提包及其他花式品，绝大部分被当做垃圾丢掉了，这不仅浪费了资源，还污染了环境。所以从香蕉叶中提取香蕉纤维制备成复合材料，对我国的经济发展具有重要的意义。香蕉纤维可分为香蕉茎纤维和香蕉叶纤维，香蕉茎纤维具有一般麻类纤维的优点，如强度高、伸长小、纤维粗硬、易于吸湿放湿、易于染色等特点，香蕉叶纤维具有优良的抗碱、酚、甲酸、氯仿、丙酮能力，将其添加到聚氯乙烯材料中能够减少环境污染带来巨大的经济效益，并且还能够提高聚氯乙烯的抗化学腐蚀能力，但是直接加入会降低聚氯乙烯本身的材料性能，限制其应用，必须对香蕉纤维进行改性，提高其与聚氯乙烯的界面相容性。
发明内容
本发明目的就是为了弥补已有技术的缺陷，提供一种使用寿命长的聚氯乙烯发泡管。
本发明是通过以下技术方案实现的：
一种使用寿命长的聚氯乙烯发泡管，由以下重量份的原料制备制成：聚丙烯腈纤维3-3.5、香蕉叶20-25、0.4%硅烷偶联剂Si691-1.5、偶氮二甲酰胺1.5-2、碳酸氢钠5-6、氧化锌0.2-0.3、硝酸稀土0.3-0.5、钛白粉2-3、凡士林3-4、氯磺化聚乙烯胶2-3、硬脂酸锌1-2、聚氯乙烯100-110、石棉粉1.5-2、羟丙基纤维素0.6-0.8、氯化石蜡1-2、丁苯橡胶3-4、去离子水适量。
所述一种使用寿命长的聚氯乙烯发泡管，由以下具体步骤制备制成：
（1）将香蕉叶清洗干净晾干后采用压榨、漂白、清洗、烘干的方法提取香蕉纤维，再和聚丙烯腈纤维混纺得到混合纤维条备用；将0.4%硅烷偶联剂Si69用无水乙醇稀释后加入轮胎粉，三者按照质量比1:4:3混合均匀，再将混合纤维条以浴比1：10浸渍到硅烷偶联剂溶液中，加热至溶剂挥发，烘干后备用；
（2）将硝酸稀土用适量的去离子水溶解，再将钛白粉和石棉粉研磨成细粉后加到稀土溶液中，然后置于马弗炉中260-300℃下煅烧1h冷却备用；羟丙基纤维素、羟乙基纤维素、糊精按照质量比2:1.3:2.5混合，用总重量份16-20倍量的水溶解，然后加入上述备用混合物边加热至边搅拌形成粘状浆料备用；
（3）将步骤（1）制备的改性混合纤维条短切后加到步骤（2）的浆料中，超声分散均匀，之后加到烘箱中烘干；将丁苯橡胶用13-16倍量的丙酮溶解，再将上述短切纤维加到丁苯橡胶溶液中，超声分散均匀后加热蒸去溶剂，烘干后得到橡胶包覆的混合物；
（4）将聚氯乙烯及其剩余物质加到高速混合机中混合均匀，随后加到热炼机中混合塑化，温度控制在130-140℃，再加入步骤（3）制备的产物，混合均匀后加到模腔中进行模压发泡，温度控制在185-190℃，时间为2.5-3min，保压压力为15-18MPa，自然冷却即可得到。
本发明的优点是：本发明利用硅烷偶联剂Si69改性混纺的香蕉叶纤维和聚丙烯腈纤维条，使香蕉叶纤维中半纤维素和木质素成分减少，纤维素原纤的结合程度减弱，易发生解旋和形变，提高了断裂伸长率和拉伸强度，再利用羟丙基、羟乙基纤维素和糊精处理纳米混合物，使其表面形成易吸附层，附着在混合纤维条表面提高了阻燃、耐磨、耐火等性能，并且利用丁苯橡胶与聚氯乙烯优良的相容性，使纤维条在聚氯乙烯中分散性好，不团聚，达到提高聚氯乙烯发泡管阻燃、耐磨、耐腐蚀、质轻、高强等特性；本发明的制备方法使管材之间的力学强度、韧性都得到了很大的提高，另外，还具有优良的抗氧化、隔热、耐高温、耐腐蚀等特性，原料来源广泛，成本低，可大规模生产，值得推广。
具体实施方式
一种使用寿命长的聚氯乙烯发泡管，由以下重量份（公斤）的原料制备制成：聚丙烯腈纤维3、香蕉叶20、0.4%硅烷偶联剂Si691、偶氮二甲酰胺1.5、碳酸氢钠5、氧化锌0.2、硝酸稀土0.3、钛白粉2、凡士林3、氯磺化聚乙烯胶2、硬脂酸锌1、聚氯乙烯100、石棉粉1.5、羟丙基纤维素0.6、氯化石蜡1、丁苯橡胶3、去离子水适量。
所述一种使用寿命长的聚氯乙烯发泡管，由以下具体步骤制备制成：
（1）将香蕉叶清洗干净晾干后采用压榨、漂白、清洗、烘干的方法提取香蕉纤维，再和聚丙烯腈纤维混纺得到混合纤维条备用；将0.4%硅烷偶联剂Si69用无水乙醇稀释后加入轮胎粉，三者按照质量比1:4:3混合均匀，再将混合纤维条以浴比1：10浸渍到硅烷偶联剂溶液中，加热至溶剂挥发，烘干后备用；
（2）将硝酸稀土用适量的去离子水溶解，再将钛白粉和石棉粉研磨成细粉后加到稀土溶液中，然后置于马弗炉中260℃下煅烧1h冷却备用；羟丙基纤维素、羟乙基纤维素、糊精按照质量比2:1.3:2.5混合，用总重量份16倍量的水溶解，然后加入上述备用混合物边加热至边搅拌形成粘状浆料备用；
（3）将步骤（1）制备的改性混合纤维条短切后加到步骤（2）的浆料中，超声分散均匀，之后加到烘箱中烘干；将丁苯橡胶用13倍量的丙酮溶解，再将上述短切纤维加到丁苯橡胶溶液中，超声分散均匀后加热蒸去溶剂，烘干后得到橡胶包覆的混合物；
（4）将聚氯乙烯及其剩余物质加到高速混合机中混合均匀，随后加到热炼机中混合塑化，温度控制在130℃，再加入步骤（3）制备的产物，混合均匀后加到模腔中进行模压发泡，温度控制在185℃，时间为2.5min，保压压力为15MPa，自然冷却即可得到。
该聚氯乙烯材料拉伸强度：62.6MPa，断裂伸长率：6.1%，弯曲强度121MPa，弯曲模量：2.65GPa，冲击强度：11.2kJ/m2，氧指数：35.8%。

Claims (2)

1.一种使用寿命长的聚氯乙烯发泡管，其特征在于，由以下重量份的原料制备制成：聚丙烯腈纤维3-3.5、香蕉叶20-25、0.4%硅烷偶联剂Si691-1.5、偶氮二甲酰胺1.5-2、碳酸氢钠5-6、氧化锌0.2-0.3、硝酸稀土0.3-0.5、钛白粉2-3、凡士林3-4、氯磺化聚乙烯胶2-3、硬脂酸锌1-2、聚氯乙烯100-110、石棉粉1.5-2、羟丙基纤维素0.6-0.8、氯化石蜡1-2、丁苯橡胶3-4、去离子水适量。
2.根据权利要求1所述一种使用寿命长的聚氯乙烯发泡管，其特征在于，由以下具体步骤制备制成：
（1）将香蕉叶清洗干净晾干后采用压榨、漂白、清洗、烘干的方法提取香蕉纤维，再和聚丙烯腈纤维混纺得到混合纤维条备用；将0.4%硅烷偶联剂Si69用无水乙醇稀释后加入轮胎粉，三者按照质量比1:4:3混合均匀，再将混合纤维条以浴比1：10浸渍到硅烷偶联剂溶液中，加热至溶剂挥发，烘干后备用；
（2）将硝酸稀土用适量的去离子水溶解，再将钛白粉和石棉粉研磨成细粉后加到稀土溶液中，然后置于马弗炉中260-300℃下煅烧1h冷却备用；羟丙基纤维素、羟乙基纤维素、糊精按照质量比2:1.3:2.5混合，用总重量份16-20倍量的水溶解，然后加入上述备用混合物边加热至边搅拌形成粘状浆料备用；
（3）将步骤（1）制备的改性混合纤维条短切后加到步骤（2）的浆料中，超声分散均匀，之后加到烘箱中烘干；将丁苯橡胶用13-16倍量的丙酮溶解，再将上述短切纤维加到丁苯橡胶溶液中，超声分散均匀后加热蒸去溶剂，烘干后得到橡胶包覆的混合物；
（4）将聚氯乙烯及其剩余物质加到高速混合机中混合均匀，随后加到热炼机中混合塑化，温度控制在130-140℃，再加入步骤（3）制备的产物，混合均匀后加到模腔中进行模压发泡，温度控制在185-190℃，时间为2.5-3min，保压压力为15-18MPa，自然冷却即可得到。
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