CN104403172A - 一种ldpe发泡异形材料及其制备方法 - Google Patents

一种ldpe发泡异形材料及其制备方法 Download PDF

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CN104403172A
CN104403172A CN201410687067.7A CN201410687067A CN104403172A CN 104403172 A CN104403172 A CN 104403172A CN 201410687067 A CN201410687067 A CN 201410687067A CN 104403172 A CN104403172 A CN 104403172A
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ldpe
foaming
parts
special
shaped material
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夏克文
冯永根
潘丙根
魏良军
陈利萍
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SUZHOU JIUDING EPE CO Ltd
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Abstract

本发明公开了一种LDPE发泡异形材料及其制备方法。该LDPE发泡异形材料，按质量份计，包括LDPE90～100份、成核剂3～6份、发泡剂1～2份、抗收缩剂0.1～0.5份、聚乙烯蜡2～6份、氧化锌0.1～1份、色母料0.01～0.05份、抗静电剂0.01～0.05份、抗老剂0.01～0.05份、阻燃剂0.01～0.05份。本发明的LDPE发泡异形材料质轻、富有弹性、隔音，具有良好的防水、防潮、阻燃、抗静电、抗拉伸功能，能够分散外来的撞击力、达到缓冲减震的效果。

Description

一种LDPE发泡异形材料及其制备方法
技术领域
本发明涉及缓冲环保型包装材料领域，尤其涉及一种LDPE发泡异形材料及其制备方法。 
背景技术
目前市面上发泡异形材料EPS(Expanded Polystyrene)聚苯乙烯使用时易碎、变形、回复性差的缺点，使用后无法回收，造成环境污染不环保，市场将越来越小；纸类蜂窝网状虽有环保、易裁切、成本低、使用范围宽等优点，但由于其表面较硬，对某些产品表面会有磨损和划痕，难形成三维加工产品，且湿度大、吸水、过载复原性差，所以在缓冲包装材料上稍逊色。特别是在水果类、易碎易划伤类的产品(如陶瓷、玻璃、液晶类)不适合使用。EPS(Expanded Polystyrene)聚苯乙烯，无法回收，不环保；蜂窝纸网、纸托盘缺点：耐破性能、耐折性能、耐戳穿性能等较差，弹性较差，印刷适性较差，不防潮。 
发明内容
有鉴于此，本发明一方面提供一种LDPE发泡异形材料。该LDPE发泡异形材料质轻、富有弹性、隔音，具有良好的防水、防潮、阻燃、抗静电、抗拉伸功能，能够分散外来的撞击力、达到缓冲减震的效果。 
为达此目的，本发明采用以下技术方案： 
一种LDPE发泡异形材料，按质量份计，包括以下组分： 
优选的，该LDPE发泡异形材料，按质量份计，包括以下组分： 
优选的，成核剂为滑石粉、发泡剂为丁烷和/或氟利昂，抗收缩剂为单甘脂。 
本发明另一方面提供一种制备上述LDPE发泡异形材料的方法，该方法制备的LDPE发泡异形材料质轻、富有弹性、隔音，具有良好的防水、防潮、阻燃、抗静电、抗拉伸功能，能够分散外来的撞击力、达到缓冲减震的效果。 
一种制备上述LDPE发泡异形材料的方法，包括以下步骤： 
(1)按质量份计，将LDPE 90～100份、成核剂3～6份和聚乙烯蜡2～6份加入到挤出机料筒中加热混合，加入氧化锌0.1～1份和色母料0.01～0.05份、抗静电剂0.01～0.05份、抗老剂0.01～0.05份、阻燃剂0.01～0.05份继续混合，将发泡剂1～2份和抗收缩剂0.1～0.5份加热并分别用高压计量泵加入到料筒中，加热混合，使各组分均匀分散、冷却、通过过滤网经机头挤出、发泡、成型、冷却牵引、展平、卷绕后制得发泡片材； 
(2)将卷绕后的发泡片材静置1～2周后，将发泡片材经过复合机熔融、贴合增厚，得到发泡板材，将发泡板材进行裁切、冲压、得到发泡异形材料配件； 
(3)将发泡异形材料配件进行热粘合，得到LDPE发泡异性材料。 
优选的，步骤(1)具体过程为：按质量份计，将LDPE 90～100份、成核剂3～6份和聚乙烯蜡2～6份加入到挤出机料筒中，在125～135℃下混合5～7min，加入氧化锌0.1～1份、色母料0.01～0.05份、抗静电剂0.01～0.05份、抗老剂0.01～0.05份、阻燃剂0.01～0.05份，继续混合2～3min，将发泡剂1～2份和抗收缩剂0.1～0.5份加热至105～115℃，并分别用高压计量泵以10～15MPa的压力加入到料筒中，加热至150～170℃混合4～6min，使各组分均匀分散、冷却、通过过滤网经机头挤出、发泡、成型、冷却牵引、展平、卷绕后制得发泡片材。 
优选的，步骤(3)具体过程为：清除发泡异形材料配件表面灰尘和油污后，将发泡异形材料配件进行热粘合，静置10～20min，得到LDPE发泡异性材料。 
本发明的有益效果：一种LDPE发泡异形材料，按质量份计，包括LDPE90～100份、成核剂3～6份、发泡剂1～2份、抗收缩剂0.1～0.5份、聚乙烯蜡2～6份、氧化锌0.1～1份、色母料0.01～0.05份、抗静电剂0.01～0.05份、抗老剂0.01～0.05份、阻燃剂0.01～0.05份。本发明的LDPE发泡异形材料质轻、富有弹性、隔音，具有良好的防水、防潮、阻燃、抗静电、抗拉伸功能，能够分散 外来的撞击力、达到缓冲减震的效果。 
具体实施方式
下面通过具体实施方式来进一步说明本发明的技术方案。 
实施例1：一种LDPE发泡异形材料，按质量份计，包括以下组分： 
一种制备上述LDPE发泡异形材料的方法，其包括以下步骤： 
按质量份计，将LDPE 90份、成核剂3份和聚乙烯蜡2份加入到挤出机料筒中，在125℃下混合5min，加入氧化锌0.1份、色母料0.01份、抗静电剂0.01份、抗老剂0.01份、阻燃剂0.01份，继续混合2min，将发泡剂1份和抗收缩剂0.1份加热至105℃，并分别用高压计量泵以10MPa的压力加入到料筒中，加热至150℃混合4min，使各组分均匀分散、冷却、通过过滤网经机头挤出、发泡、成型、冷却牵引、展平制得LDPE发泡异形材料； 
将卷绕后的发泡片材静置1周后，将发泡片材经过复合机熔融、贴合增厚，得到发泡板材，将发泡板材进行裁切、冲压、得到发泡异形材料配件，清除发 泡异形材料配件表面灰尘和油污后，将发泡异形材料配件进行粘合，静置10min，得到LDPE发泡异性材料。 
实施例2：一种LDPE发泡异形材料，按质量份计，包括以下组分： 
一种制备上述LDPE发泡异形材料的方法，其包括以下步骤： 
按质量份计，将LDPE 95份、成核剂3.5份和聚乙烯蜡3份加入到挤出机料筒中，在130℃下混合6min，加入氧化锌0.5份、色母料0.03份、抗静电剂0.03份、抗老剂0.03份、阻燃剂0.03份，继续混合2.5min，将发泡剂1.2份和抗收缩剂0.2份加热至110℃，并分别用高压计量泵以15MPa的压力加入到料筒中，加热至160℃混合5min，使各组分均匀分散、冷却、通过过滤网经机头挤出、发泡、成型、冷却牵引、展平制得LDPE发泡异形材料； 
将卷绕后的发泡片材静置1.5周后，将发泡片材经过复合机熔融、贴合增厚，得到发泡板材，将发泡板材进行裁切、冲压、得到发泡异形材料配件，清除发泡异形材料配件表面灰尘和油污后，将发泡异形材料配件进行粘合，静置 15min，得到LDPE发泡异性材料。 
实施例3：一种LDPE发泡异形材料，按质量份计，包括以下组分： 
一种制备上述LDPE发泡异形材料的方法，其包括以下步骤： 
步骤(1)具体过程为：按质量份计，将LDPE 100份、成核剂6份和聚乙烯蜡6份加入到挤出机料筒中，在135℃下混合7min，加入氧化锌1份、色母料0.05份、抗静电剂0.05份、抗老剂0.05份、阻燃剂0.05份，继续混合3min，将发泡剂2份和抗收缩剂0.5份加热至115℃，并分别用高压计量泵以15MPa的压力加入到料筒中，加热至170℃混合6min，使各组分均匀分散、冷却、通过过滤网经机头挤出、发泡、成型、冷却牵引、展平制得LDPE发泡异形材料； 
将卷绕后的发泡片材静置2周后，将发泡片材经过复合机熔融、贴合增厚，得到发泡板材，将发泡板材进行裁切、冲压、得到发泡异形材料配件，清除发泡异形材料配件表面灰尘和油污后，将发泡异形材料配件进行粘合，静置20min，得到LDPE发泡异性材料。 
将实施例1～3得到的LDPE发泡异形材料和目前市场上的EPS发泡异形材料进行测试，结果如下表： 
通过上表可以看出，本发明的LDPE发泡异形材料质轻、柔软、富有弹性、拉伸强度和撕裂强度高，具有良好的防水、防潮、抗拉伸功能，能够分散外来的撞击力，达到缓冲的效果。 
本发明的LDPE发泡异形材料是一种低密度，高强度的轻质复合材料，重量轻，具有一定的坚固性；柔软性和缓冲性很好，受反复冲压击其特性不变、导热率很低而隔热性很好；独立气泡的构成，几乎没吸水性的防水材料，具有很好的隔音，防震效果；不受各种气候条件影响，耐气候性优越，切断、粘合、成型、加工性优越；外表光滑，可做成各种颜色，更显优美效果；通过加工具有阻燃效果，加入防静电剂，可具有防静电效果；在生产过程中没有其它化学衍生物产生，废弃的EPE可回收造料再利用，对环境无污染，符合环保标准。 
本发明的LDPE发泡异形材料质轻、柔软、富有弹性、拉伸强度和撕裂强度高，具有良好的防水、防潮、阻燃、抗静电、抗拉伸功能，能够分散外来的撞击力，达到缓冲的效果。 
申请人声明，以上内容仅为本发明的较佳实施例，对于本领域的普通技术人员，依据本发明的思想，在具体实施方式及应用范围上均会有改变之处，本说明书内容不应理解为对本发明的限制。 

Claims (6)

1.一种LDPE发泡异形材料，其特征在于，按质量份计，包括以下组分：
2.根据权利要求1所述的LDPE发泡异形材料，其特征在于，按质量份计，包括以下组分：
3.根据权利要去1所述的LDPE发泡异形材料，其特征在于，所述成核剂为滑石粉、所述发泡剂为丁烷和/或氟利昂，所述抗收缩剂为单甘脂。
4.一种制备权利要求1所述的LDPE发泡异形材料的方法，其特征在于，包括以下步骤：
(1)按质量份计，将LDPE 90～100份、成核剂3～6份和聚乙烯蜡2～6份加入到挤出机料筒中加热混合，加入氧化锌0.1～1份和色母料0.01～0.05份、抗静电剂0.01～0.05份、抗老剂0.01～0.05份、阻燃剂0.01～0.05份继续混合，将发泡剂1～2份和抗收缩剂0.1～0.5份加热并分别用高压计量泵加入到料筒中，加热混合，使各组分均匀分散、冷却、通过过滤网经机头挤出、发泡、成型、冷却牵引、展平、卷绕后制得发泡片材；
(2)将卷绕后的发泡片材静置1～2周后，将发泡片材经过复合机熔融、贴合增厚，得到发泡板材，将发泡板材进行裁切、冲压、得到发泡异形材料配件；
(3)将发泡异形材料配件进行热粘合，得到LDPE发泡异性材料。
5.根据权利要求4所述的制备方法，其特征在于，步骤(1)具体过程为：按质量份计，将LDPE 90～100份、成核剂3～6份和聚乙烯蜡2～6份加入到挤出机料筒中，在125～135℃下混合5～7min，加入氧化锌0.1～1份、色母料0.01～0.05份、抗静电剂0.01～0.05份、抗老剂0.01～0.05份、阻燃剂0.01～0.05份，继续混合2～3min，将发泡剂1～2份和抗收缩剂0.1～0.5份加热至105～115℃，并分别用高压计量泵以10～15MPa的压力加入到料筒中，加热至150～170℃混合4～6min，使各组分均匀分散、冷却、通过过滤网经机头挤出、发泡、成型、冷却牵引、展平、卷绕后制得发泡片材。
6.根据权利要求4所述的制备方法，其特征在于，步骤(3)具体过程为：清除发泡异形材料配件表面灰尘和油污后，将发泡异形材料配件进行热粘合，静置10～20min，得到LDPE发泡异性材料。
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