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