CN103524827A - 一种耐磨纳米薄膜及其生产方法 - Google Patents

一种耐磨纳米薄膜及其生产方法 Download PDF

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CN103524827A
CN103524827A CN201310434526.6A CN201310434526A CN103524827A CN 103524827 A CN103524827 A CN 103524827A CN 201310434526 A CN201310434526 A CN 201310434526A CN 103524827 A CN103524827 A CN 103524827A
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刘荣
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SUZHOU HANXIN PLASTIC Co Ltd
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Abstract

本发明涉及一种耐磨纳米薄膜，包括外层、中层、内层三部分，各部分组成比例为（重量百分比）：外层40份，中层20份，内层40份。本发明还提供了此种薄膜的生产方法，包括以下步骤：步骤一、混料；步骤二、配料；步骤三、吹膜。本发明提供的薄膜具有表面平整度高、易电晕、易复合、耐磨的特点，而且可以结合配料设备，通过吹膜机实现连续生产。

Description

一种耐磨纳米薄膜及其生产方法
技术领域
本发明涉及薄膜生产加工领域，具体是一种耐磨纳米薄膜及其生产方法。 
背景技术
吹膜(BlowMembrane)是一种塑料加工方法，是指将塑料粒子加热融化再吹成薄膜的一种塑料加工工艺。如果是用新料吹出的薄膜，色泽均匀，干净，成品拉伸好。如果用回收的废塑料制成的塑料粒子，在制成薄膜时通常要添加色素，制成的薄膜可能就着色不匀，脆且易断，价格也较低。由专业的吹膜机生产的吹膜料适用于各种高档薄膜包装。这种膜由于其阻隔性好，保鲜，防湿，防霜冻，隔氧，耐油，可广泛用于轻重包装。如各种鲜果、肉食品、酱菜、鲜牛奶、液体饮料、医药用品等。若非专业的吹膜机或者吹膜机在加工过程中没有使用正确的方法，那么制成的膜料也可能是次等品。大多数PE用于吹膜加工薄膜，通用低密度PE（LDPE）或线性低密PE（LLDPE）都可用。HDPE薄膜级一般用于要求优越的拉伸性和极好的防渗性的地方。例如，HDPE膜常用于商品袋、杂货袋和食物包装。PE薄膜加工一般用普通吹膜加工或平挤加工法。 
由于薄膜应用的范围不同，要求的特性会有很大的差别，目前还没有一种容易量产、表面平整度高、易电晕、易复合、耐磨的薄膜。 
发明内容
本发明正是以上技术问题，提供一种容易量产、表面平整度高、易电晕、易复合、耐磨的薄膜。 
本发明通过以下技术方案实现： 
一种薄膜，包括外层、中层、内层三部分，各部分组成比例为（重量百分比）：外层40份，中层20份，内层40份，其中外层由LDPE2420H、LLDPE920NT、PPO聚苯醚、纳米阻燃复合物组成，各组分比例为（重量百分比）：LDPE2420H占55份～60份、LLDPE920NT占25份～40份、PPO聚苯醚5份～20份、纳米阻燃复合物 5-30份;
所述的纳米阻燃复合剂的制备方法为：
（1）将硅羟基磷灰石、红磷、凹凸棒、水滑石、蒙脱土、钛白粉、方解石、高岭土按照25-35：15-20：10-15 ：10-15：8-10：8-10：7-8：5-7的质量份数配比混合，加入到200份二甲亚砜(DMSO)和50份甲醇的混合溶液中，于65℃搅拌60小时，过滤，并用60℃温度的热乙醇洗3次除去过量的二甲亚砜(DMSO)，放入真空干燥箱，在60℃温度干燥24小时，研磨过筛，得一次改性阻燃复合物；        （2）、将1份一次改性阻燃复合物、10份醋酸钾和25份蒸馏水混合，于温度50℃搅拌10小时以上，于温度30℃，先在超声电功率350W条件下分散2.5小时，然后再在超声电功率250W条件下分散3小时。过滤，并用蒸馏水洗3次，80℃真空干燥24小时，研磨过筛，得二次改性阻燃复合物；        （3）、将上述1份二次改性阻燃复合物在600W功率超声波分散40min，用恒温加热装 置加热到90℃，并用机械搅拌器搅拌(1200r/min)60分钟；得纳米阻燃复合物；中层由LDPE2420H、LLDPE920NT组成，各组分比例为（重量百分比）：LDPE2420H占30份～40份、LLDPE920NT占60份～70份；内层由LDPE2426H、MDPE5401、LLDPE218W、LLDPE920NT组成，各组分比例为（重量百分比）：LDPE2426H占20份～30份、MDPE5401占20份～30份、LLDPE218W占20份～30份、LLDPE920NT占20份～30份。
一种薄膜的生产方法，包括以下步骤： 
步骤一、混料，按外层、中层、内层各组分的重量百分比将各原料按规定比例搅拌均匀制成原混材料备用；
步骤二、配料，按外层、中层、内层的重量百分比将步骤一制备的原混材料进行配料；
步骤三、吹膜，采用配有自动配料设备的吹膜机吹塑成型生产出需要的薄膜。
本发明提供的薄膜具有表面平整度高、易电晕、易复合、耐磨的特点，而且可以结合配料设备，通过吹膜机实现连续生产。本发明制备的阻燃剂不含卤素、有机物，无毒环保，应用前景广阔；本发明进行二次改性，这样的好处是：增加反应活性点，提高改性效果；改性的同时又能蒸除体系中的水分，干燥与改性同时进行，提高了工作效率；纳米级硅羟基磷灰石、凹凸棒、蒙脱土、高岭土等自身微孔中存在大量的物理和化学吸附水，在高温下产生水蒸汽，阻断氧气，吸收热量，达到多重阻燃的功效；强大吸附性能可以有效改善几种阻燃剂的协同作用，阻止被阻燃物质温度升高，提高了阻燃效率；硅羟基磷灰石、凹凸棒、蒙脱土、高岭土等资源丰富，大大降低了阻燃剂的工业成本，也为凹凸棒土的开发应用提供了一条新途径；本发明采用溶液法超声波分散及机械高速搅拌器搅拌，使得阻燃剂各自组分在溶液中达到了纳米级分散，有效避免了对复合材料的自然氧化，相互协同增效，从而使复合材料具有更好的力学性能。 
具体实施方式
下面结合具体实施例对本发明做进一步说明。 
实施例1 
首先，按重量百分比将60份的LDPE2420H、30份的LLDPE920NT、10份的PPO聚苯醚、纳米阻燃复合物 5 份;搅拌均匀制成外层原混材料，按重量百分比将35份的LDPE2420H、65份的LLDPE920NT搅拌均匀制成中层原混材料，按重量百分比将25份的LDPE2426H、25份的MDPE5401、25份的LLDPE218W、25份的LLDPE920NT搅拌均匀制成内层原混材料，按重量百分比然后将外层原混材料、中层原混材料、内层原混材料按外层40份，中层20份，内层40份进行配料，配料完成后，即可采用配有自动配料设备的吹膜机吹塑成型生产出需要的薄膜。
实施例2 
首先，按重量百分比将55份的LDPE2420H、25份的LLDPE920NT、20份的PPO聚苯醚、纳米阻燃复合物 20份;
搅拌均匀制成外层原混材料，按重量百分比将30份的LDPE2420H、70份的LLDPE920NT搅拌均匀制成中层原混材料，按重量百分比将20份的LDPE2426H、30份的MDPE5401、20份的LLDPE218W、30份的LLDPE920NT搅拌均匀制成内层原混材料，按重量百分比然后将外层原混材料、中层原混材料、内层原混材料按外层40份，中层20份，内层40份进行配料，配料完成后，即可采用配有自动配料设备的吹膜机吹塑成型生产出需要的薄膜。
实施例3 
首先，按重量百分比将58份的LDPE2420H、26份的LLDPE920NT、16份的PPO聚苯醚、纳米阻燃复合物   30份;
搅拌均匀制成外层原混材料，按重量百分比将40份的LDPE2420H、60份的LLDPE920NT搅拌均匀制成中层原混材料，按重量百分比将30份的LDPE2426H、20份的MDPE5401、30份的LLDPE218W、20份的LLDPE920NT搅拌均匀制成内层原混材料，按重量百分比然后将外层原混材料、中层原混材料、内层原混材料按外层40份，中层20份，内层40份进行配料，配料完成后，即可采用配有自动配料设备的吹膜机吹塑成型生产出需要的薄膜。
经过多次试验证明， PPO聚苯醚提高耐磨性效果最明显。并且随着添加量的增加，其耐磨性能也呈增长趋势。 
本发明提供的薄膜具有表面平整度高、易电晕、易复合、耐磨的特点，而且可以结合配料设备，通过吹膜机实现连续生产。本发明制备的阻燃剂不含卤素、有机物，无毒环保，应用前景广阔；本发明进行二次改性，这样的好处是：增加反应活性点，提高改性效果；改性的同时又能蒸除体系中的水分，干燥与改性同时进行，提高了工作效率；纳米级硅羟基磷灰石、凹凸棒、蒙脱土、高岭土等自身微孔中存在大量的物理和化学吸附水，在高温下产生水蒸汽，阻断氧气，吸收热量，达到多重阻燃的功效；强大吸附性能可以有效改善几种阻燃剂的协同作用，阻止被阻燃物质温度升高，提高了阻燃效率；硅羟基磷灰石、凹凸棒、蒙脱土、高岭土等资源丰富，大大降低了阻燃剂的工业成本，也为凹凸棒土的开发应用提供了一条新途径；本发明采用溶液法超声波分散及机械高速搅拌器搅拌，使得阻燃剂各自组分在溶液中达到了纳米级分散，有效避免了对复合材料的自然氧化，相互协同增效，从而使复合材料具有更好的力学性能。 

Claims (5)

1.一种耐磨纳米薄膜，包括外层、中层、内层三部分，各部分组成比例为（重量百分比）：外层40份，中层20份，内层40份，其中外层由LDPE2420H、LLDPE920NT、 PPO聚苯醚、纳米阻燃复合物组成，各组分比例为（重量百分比）：LDPE2420H占55份～60份、LLDPE920NT占25份～40份、PPO聚苯醚5份～20份、纳米阻燃复合物   5-30份;
所述的纳米阻燃复合剂的制备方法为：
（1）将硅羟基磷灰石、红磷、凹凸棒、水滑石、蒙脱土、钛白粉、方解石、高岭土按照25-35：15-20：10-15 ：10-15：8-10：8-10：7-8：5-7的质量份数配比混合，加入到200份二甲亚砜(DMSO)和50份甲醇的混合溶液中，于65℃搅拌60小时，过滤，并用60℃温度的热乙醇洗3次除去过量的二甲亚砜(DMSO)，放入真空干燥箱，在60℃温度干燥24小时，研磨过筛，得一次改性阻燃复合物；        （2）、将1份一次改性阻燃复合物、10份醋酸钾和25份蒸馏水混合，于温度50℃搅拌10小时以上，于温度30℃，先在超声电功率350W条件下分散2.5小时，然后再在超声电功率250W条件下分散3小时，过滤，并用蒸馏水洗3次，80℃真空干燥24小时，研磨过筛，得二次改性阻燃复合物；        （3）、将上述1份二次改性阻燃复合物在600W功率超声波分散40min，用恒温加热装 置加热到90℃，并用机械搅拌器搅拌(1200r/min)60分钟；得纳米阻燃复合物；中层由LDPE2420H、LLDPE920NT组成，各组分比例为（重量百分比）：LDPE2420H占30份～40份、LLDPE920NT占60份～70份；内层由LDPE2426H、MDPE5401、LLDPE218W、LLDPE920NT组成，各组分比例为（重量百分比）：LDPE2426H占20份～30份、MDPE5401占20份～30份、LLDPE218W占20份～30份、LLDPE920NT占20份～30份。
2.根据权利要求1所述一种薄膜，其特征在于外层各组分比例为LDPE2420H占60份、LLDPE920NT占30份、PPO聚苯醚10份、纳米阻燃复合物      5份；中层各组分比例为LDPE2420H占35份、LLDPE920NT占65份；内层各组分比例为LDPE2426H占25份、MDPE5401占25份、LLDPE218W占25份、LLDPE920NT占25份。
3.根据权利要求1所述一种薄膜，其特征在于外层各组分比例为LDPE2420H占55份、LLDPE920NT占25份、PPO聚苯醚20份、纳米阻燃复合物   20份；中层各组分比例为LDPE2420H占30份、LLDPE920NT占70份；内层各组分比例为LDPE2426H占20份、MDPE5401占30份、LLDPE218W占20份、LLDPE920NT占30份。
4.根据权利要求1所述一种薄膜，其特征在于外层各组分比例为LDPE2420H占58份、LLDPE920NT占26份、PPO聚苯醚16份、纳米阻燃复合物 30份；中层各组分比例为LDPE2420H占40份、LLDPE920NT占60份；内层各组分比例为LDPE2426H占30份、MDPE5401占20份、LLDPE218W占30份、LLDPE920NT占20份。
5.一种薄膜的生产方法，包括以下步骤：
步骤一、混料，按外层、中层、内层各组分的重量百分比将各原料按规定比例搅拌均匀制成原混材料备用；
步骤二、配料，按外层、中层、内层的重量百分比将步骤一制备的原混材料进行配料；
步骤三、吹膜，采用配有自动配料设备的吹膜机吹塑成型生产出需要的薄膜。
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CN103496240A (zh) * 2013-09-23 2014-01-08 苏州市涵信塑业有限公司 一种耐高温耐磨薄膜及其生产方法

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