CN111793263B - 一种橡塑交联发泡保温包装箱及注射成型工艺 - Google Patents

一种橡塑交联发泡保温包装箱及注射成型工艺 Download PDF

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CN111793263B
CN111793263B CN202010714882.3A CN202010714882A CN111793263B CN 111793263 B CN111793263 B CN 111793263B CN 202010714882 A CN202010714882 A CN 202010714882A CN 111793263 B CN111793263 B CN 111793263B
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CN111793263A (zh
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谢亮
王杰
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Cixian Bao Dao Plastic Shoe Industry Co ltd
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Abstract

本发明属于橡塑制品技术领域，提出了一种橡塑交联发泡保温包装箱及注射成型工艺，包括以下重量份的组分：聚乙烯20～60份，聚苯乙烯20～60份，乙烯‑醋酸乙烯共聚物10～40份，热塑性弹性体5～30份，滑石粉5～20份，钙粉5～20份，氧化锌0.5～2份，硬脂酸锌0.3～1份，分散剂0.5～1.5份，交联剂0.5～1.5分，硬脂酸0.3～1份，阻燃剂20～50份，快熟剂0.1～1份，发泡剂2～6份，颜料0～15份，其注射成型工艺，包括以下步骤：将原料中各组分混合得到混合料，将混合料开练成片，造粒、冷却、塑化后射入模具，在模具中交联后开模发泡，定型冷却，得到橡塑交联发泡保温包装箱。通过上述技术方案，解决了现有技术中发泡保温箱不可折叠、保温效果差、运输成本高、不环保的问题。

Description

一种橡塑交联发泡保温包装箱及注射成型工艺
技术领域
本发明属于橡塑制品技术领域，涉及一种橡塑交联发泡保温包装箱及注射成型工艺。
背景技术
在冷链运输领域，药品、食物等很多物品在存放、周转、运输的过程中，需要在一定时间内保持一定的温度或一定的温度范围内，就需要把要被保温的物品放在保温包装箱内，将保温包装箱随物品的物流运输被一起转移。
传统的保温包装箱有聚丙乙烯、丁钵发泡，聚氨酯发泡，及牛津布或尼龙布还有无纺布铝箔复合材料。聚丙乙烯、丁钵发泡，聚氨酯发泡等材质的保温包装箱不可折叠，其运输成本高，回收再利用的过程不环保；而牛津布或尼龙布还有无纺布铝箔复合材料等制成的保温包装箱生产工艺复杂、保温效果差、不可回收、不环保。因此，急需开发一种可折叠、保温效果好、运输方便且环保的发泡保温箱，以解决上述问题。
发明内容
本发明提出一种橡塑交联发泡保温包装箱及注射成型工艺，解决了现有技术中发泡保温箱不可折叠、保温效果差、运输成本高、不环保的问题。
本发明的技术方案是这样实现的：
一种橡塑交联发泡保温包装箱，包括以下重量份的组分：
聚乙烯20～60份，聚苯乙烯20～60份，乙烯-醋酸乙烯共聚物10～40份，热塑性弹性体5～30份，滑石粉5～20份，钙粉5～20份，氧化锌0.5～2份，硬脂酸锌0.3～1份，分散剂0.5～1.5份，交联剂0.5～1.5分，硬脂酸0.3～1份，阻燃剂20～50份，快熟剂0.1～1份，发泡剂2～6份，颜料0～15份。
作为进一步的技术方案，包括以下重量份的组分：
聚乙烯40份，聚苯乙烯40份，乙烯-醋酸乙烯共聚物23份，热塑性弹性体18份，滑石粉12份，钙粉12份，氧化锌1.3份，硬脂酸锌0.6份，分散剂1份，交联剂1分，硬脂酸0.6份，阻燃剂35份，快熟剂0.5份，发泡剂4份，颜料8份。
作为进一步的技术方案，所述分散剂为硬脂酸酯类、脂肪酸酰胺类、酯类或金属皂类分散剂，所述阻燃剂为磷系阻燃剂或磷氮系阻燃剂，所述交联剂为二叔丁基过氧化异丙基苯，所述快熟剂为TAIC或TMPTMA，所述发泡剂为偶氮二甲酰胺。
本发明还提出了一种橡塑交联发泡保温包装箱的注射成型工艺，包括以下步骤：
S1.按照上述的一种橡塑交联发泡保温包装箱的配方，称取各组分备用；
S2.将聚乙烯、聚苯乙烯、乙烯-醋酸乙烯共聚物、热塑性弹性体与滑石粉、钙粉、氧化锌、硬脂酸锌、分散剂、交联剂、硬脂酸、阻燃剂、快熟剂、发泡剂、颜料混合均匀至温度为115～123℃，混合时间为600～780s，得到混合料；
S3.将混合料开练成片，得到胶片；
S4.将胶片造粒、冷却，得到粒料；
S5.将粒料塑化后射入模具，在模具中交联50～500s后，开模发泡，得到发泡料；
S6.将发泡料定型冷却，得到橡塑交联发泡保温包装箱。
作为进一步的技术方案，步骤S3得到的胶片厚度为0.5-3mm。
作为进一步的技术方案，步骤S3中开炼次数为2～6次。
作为进一步的技术方案，步骤S5中塑化在注射机料枪进行，料枪温度在80～110℃。
作为进一步的技术方案，步骤S5中模具温度为150～210℃。
本发明的工作原理及有益效果为：
本发明中，通过对发泡保温箱的配方进行设计，且通过特定的注射成型工艺，使得制备的发泡保温箱质轻、导热系数低、防水性好、抗老化性好，具有易折叠、耐弯折、耐酸碱、轻便且运输方便的效果，材料环保可回收，有效解决了现有技术中发泡保温箱不可折叠、保温效果差、运输成本高、不环保的问题。
具体实施方式
下面将结合本发明实施例，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
实施例1
一种橡塑交联发泡保温包装箱，包括以下重量份的组分：
聚乙烯20份，聚苯乙烯20份，乙烯-醋酸乙烯共聚物10份，热塑性弹性体5份，滑石粉5份，钙粉5份，氧化锌0.5份，硬脂酸锌0.3份，分散剂0.5份，交联剂0.5分，硬脂酸0.3份，阻燃剂20份，快熟剂0.1份，发泡剂2份，其中，分散剂为硬脂酸单甘油酯，交联剂为二叔丁基过氧化异丙基苯，阻燃剂为磷酸二甲苯酯，快熟剂为TAIC，发泡剂为偶氮二甲酰胺；
保温包装箱的注射成型工艺，包括以下步骤：
S1.按照上述的一种橡塑交联发泡保温包装箱的配方，称取各组分备用；
S2.将聚乙烯、聚苯乙烯、乙烯-醋酸乙烯共聚物、热塑性弹性体与滑石粉、钙粉、氧化锌、硬脂酸锌、分散剂、交联剂、硬脂酸、阻燃剂、快熟剂、发泡剂用密炼机进行混合，至密炼机温度升至115℃，混合时间为600s，得到混合料；
S3.将混合料用开炼机开练成0.5mm的胶片，反复开炼6遍；
S4.将胶片放入造粒机中，制造成颗粒后冷却，得到粒料；
S5.将粒料放入注射机料枪，料枪温度在80℃，粒料经料枪塑化后射入模具，模具温度在210℃，在模具中交联50s后，开模发泡，得到发泡料；
S6.将发泡料从模具中取出，进行定型冷却，得到橡塑交联发泡保温包装箱。
实施例2
一种橡塑交联发泡保温包装箱，包括以下重量份的组分：
聚乙烯60份，聚苯乙烯60份，乙烯-醋酸乙烯共聚物40份，热塑性弹性体30份，滑石粉20份，钙粉20份，氧化锌2份，硬脂酸锌1份，分散剂1.5份，交联剂1.5分，硬脂酸1份，阻燃剂50份，快熟剂1份，发泡剂6份，颜料15份，其中，分散剂为三硬脂酸甘油酯，交联剂为二叔丁基过氧化异丙基苯，阻燃剂为三苯基磷酸酯，快熟剂为TAIC，发泡剂为偶氮二甲酰胺；
保温包装箱的注射成型工艺，包括以下步骤：
S1.按照上述的一种橡塑交联发泡保温包装箱的配方，称取各组分备用；
S2.将聚乙烯、聚苯乙烯、乙烯-醋酸乙烯共聚物、热塑性弹性体与滑石粉、钙粉、氧化锌、硬脂酸锌、分散剂、交联剂、硬脂酸、阻燃剂、快熟剂、发泡剂、颜料用密炼机进行混合，至密炼机温度升至120℃，混合时间为780s，得到混合料；
S3.将混合料用开炼机开练成2.5mm的胶片，反复开炼2遍；
S4.将胶片放入造粒机中，制造成颗粒后冷却，得到粒料；
S5.将粒料放入注射机料枪，料枪温度在110℃，粒料经料枪塑化后射入模具，模具温度在150℃，在模具中交联500s后，开模发泡，得到发泡料；
S6.将发泡料从模具中取出，进行定型冷却，得到橡塑交联发泡保温包装箱。
实施例3
一种橡塑交联发泡保温包装箱，包括以下重量份的组分：
聚乙烯40份，聚苯乙烯40份，乙烯-醋酸乙烯共聚物23份，热塑性弹性体18份，滑石粉12份，钙粉12份，氧化锌1.3份，硬脂酸锌0.6份，分散剂1份，交联剂1分，硬脂酸0.6份，阻燃剂35份，快熟剂0.5份，发泡剂4份，颜料8份，其中，分散剂为乙烯基双硬脂酰胺，交联剂为二叔丁基过氧化异丙基苯，阻燃剂为三(2，2-二溴甲基-3-溴丙基磷酸酯)，快熟剂为TAIC，发泡剂为偶氮二甲酰胺；
保温包装箱的注射成型工艺，包括以下步骤：
S1.按照上述的一种橡塑交联发泡保温包装箱的配方，称取各组分备用；
S2.将聚乙烯、聚苯乙烯、乙烯-醋酸乙烯共聚物、热塑性弹性体与滑石粉、钙粉、氧化锌、硬脂酸锌、分散剂、交联剂、硬脂酸、阻燃剂、快熟剂、发泡剂、颜料进行混合，至密炼机温度升至120℃，混合时间为700s，得到混合料；
S3.将混合料用开炼机开练成1.5mm的胶片，反复开炼4遍；
S4.将胶片放入造粒机中，制造成颗粒后冷却，得到粒料；
S5.将粒料放入注射机料枪，料枪温度在100℃，粒料经料枪塑化后射入模具，模具温度在180℃，在模具中交联300s后，开模发泡，得到发泡料；
S6.将发泡料从模具中取出，进行定型冷却，得到橡塑交联发泡保温包装箱。
实施例4
一种橡塑交联发泡保温包装箱，包括以下重量份的组分：
聚乙烯30份，聚苯乙烯50份，乙烯-醋酸乙烯共聚物20份，热塑性弹性体20份，滑石粉10份，钙粉15份，氧化锌1.5份，硬脂酸锌0.7份，分散剂1.2份，交联剂0.7分，硬脂酸0.5份，阻燃剂30份，快熟剂0.3份，发泡剂3份，颜料5份，其中，分散剂为硬脂酰胺，交联剂为二叔丁基过氧化异丙基苯，阻燃剂为磷酸三苯酯，快熟剂为TAIC，发泡剂为偶氮二甲酰胺；
保温包装箱的注射成型工艺，包括以下步骤：
S1.按照上述的一种橡塑交联发泡保温包装箱的配方，称取各组分备用；
S2.将聚乙烯、聚苯乙烯、乙烯-醋酸乙烯共聚物、热塑性弹性体与滑石粉、钙粉、氧化锌、硬脂酸锌、分散剂、交联剂、硬脂酸、阻燃剂、快熟剂、发泡剂、颜料进行混合，至密炼机温度升至120℃，混合时间为650s，得到混合料；
S3.将混合料用开炼机开练成2mm的胶片，反复开炼5遍；
S4.将胶片放入造粒机中，制造成颗粒后冷却，得到粒料；
S5.将粒料放入注射机料枪，料枪温度在90℃，粒料经料枪塑化后射入模具，模具温度在170℃，在模具中交联200s后，开模发泡，得到发泡料；
S6.将发泡料从模具中取出，进行定型冷却，得到橡塑交联发泡保温包装箱。
实施例5
一种橡塑交联发泡保温包装箱，包括以下重量份的组分：
聚乙烯50份，聚苯乙烯30份，乙烯-醋酸乙烯共聚物30份，热塑性弹性体10份，滑石粉15份，钙粉10份，氧化锌1份，硬脂酸锌0.5份，分散剂0.8份，交联剂1.2分，硬脂酸0.7份，阻燃剂40份，快熟剂0.7份，发泡剂5份，颜料10份，其中，分散剂为硬脂酸钙，交联剂为二叔丁基过氧化异丙基苯，阻燃剂为氮磷系阻燃剂，快熟剂为TMPTMA，发泡剂为偶氮二甲酰胺；
保温包装箱的注射成型工艺，包括以下步骤：
S1.按照上述的一种橡塑交联发泡保温包装箱的配方，称取各组分备用；
S2.将聚乙烯、聚苯乙烯、乙烯-醋酸乙烯共聚物、热塑性弹性体与滑石粉、钙粉、氧化锌、硬脂酸锌、分散剂、交联剂、硬脂酸、阻燃剂、快熟剂、发泡剂、颜料进行混合，至密炼机温度升至120℃，混合时间为750s，得到混合料；
S3.将混合料用开炼机开练成3mm的胶片，反复开炼6遍；
S4.将胶片放入造粒机中，制造成颗粒后冷却，得到粒料；
S5.将粒料放入注射机料枪，料枪温度在100℃，粒料经料枪塑化后射入模具，模具温度在190℃，在模具中交联400s后，开模发泡，得到发泡料；
S6.将发泡料从模具中取出，进行定型冷却，得到橡塑交联发泡保温包装箱。
以实施例1～5得到的发泡保温箱为样品，按照GB/T17994-2008《柔性泡沫橡塑绝热制品》中规定的方法测试样品的表观密度、真空吸水率、导热系数、抗老化性等性能，测试结果见下表：
表1实施例1～5的发泡保温箱的性能测试结果
Figure BDA0002597778250000051
从上表中数据可以看出，实施例1～5制备的发泡保温箱的表观密度小、导热系数低、真空吸水率低、抗老化性好，说明本发明的配方及制备方法得到的发泡保温箱质轻、保温效果好，防水性和抗老化性好，有效解决了现有技术中发泡保温箱不可折叠、保温效果差、运输成本高、不环保的问题。
以上仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (6)

1.一种橡塑交联发泡保温包装箱，其特征在于，包括以下重量份的组分：
聚乙烯20~60份，聚苯乙烯20~60份，乙烯-醋酸乙烯共聚物10~40份，热塑性弹性体5~30份，滑石粉5~20份，钙粉5~20份，氧化锌0.5~2份，硬脂酸锌0.3~1份，分散剂0.5~1.5份，交联剂0.5~1.5份，硬脂酸0.3~1份，阻燃剂20~50份，快熟剂0.1~1份，发泡剂2~6份，颜料0~15份；
由以下步骤制备而成：
S1. 按照配方，称取各组分备用；
S2. 将聚乙烯、聚苯乙烯、乙烯-醋酸乙烯共聚物、热塑性弹性体与滑石粉、钙粉、氧化锌、硬脂酸锌、分散剂、交联剂、硬脂酸、阻燃剂、快熟剂、发泡剂、颜料混合均匀至温度为115~123℃，混合时间为600~780s，得到混合料；
S3. 将混合料开炼成片，得到胶片；
S4. 将胶片造粒、冷却，得到粒料；
S5. 将粒料塑化后射入模具，在模具中交联50~500s后，开模发泡，得到发泡料；
S6. 将发泡料定型冷却，得到橡塑交联发泡保温包装箱；
所述分散剂为脂肪酸酰胺类、酯类或金属皂类分散剂，所述阻燃剂为磷系阻燃剂或磷氮系阻燃剂，所述交联剂为二叔丁基过氧化异丙基苯，所述快熟剂为TAIC或TMPTMA，所述发泡剂为偶氮二甲酰胺。
2.根据权利要求1所述的一种橡塑交联发泡保温包装箱，其特征在于，包括以下重量份的组分：
聚乙烯40份，聚苯乙烯40份，乙烯-醋酸乙烯共聚物23份，热塑性弹性体18份，滑石粉12份，钙粉12份，氧化锌1.3份，硬脂酸锌0.6份，分散剂1份，交联剂1份，硬脂酸0.6份，阻燃剂35份，快熟剂0.5份，发泡剂4份，颜料8份。
3.根据权利要求1所述的一种橡塑交联发泡保温包装箱，其特征在于，步骤S3得到的胶片厚度为0.5-3mm。
4.根据权利要求1所述的一种橡塑交联发泡保温包装箱，其特征在于，步骤S3中开炼次数为2~6次。
5.根据权利要求1所述的一种橡塑交联发泡保温包装箱，其特征在于，步骤S5中塑化在注射机料枪进行，料枪温度在80~110℃。
6.根据权利要求1所述的一种橡塑交联发泡保温包装箱，其特征在于，步骤S5中模具温度为150~210℃。
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