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CN103980597B - 一种聚乙烯泡沫塑料及其制备方法 - Google Patents

一种聚乙烯泡沫塑料及其制备方法 Download PDF

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CN103980597B
CN103980597B CN201410206930.2A CN201410206930A CN103980597B CN 103980597 B CN103980597 B CN 103980597B CN 201410206930 A CN201410206930 A CN 201410206930A CN 103980597 B CN103980597 B CN 103980597B
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倪迪
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WUJIANG YINGLIDA PLASTIC PACKAGING CO Ltd
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Abstract

本发明公开了一种聚乙烯泡沫塑料及其制备方法。该材料由包含以下重量份的组分制成：低密度聚乙烯80-90份、单硬脂酸甘油酯5-15份、相容剂5-10份、发泡剂5-8份、过氧化苯二甲酰3-5份、炭黑2-5份、成核剂2-3份和尿素3-5份。将上述原料经过塑炼、压膜、发泡成型，得制品。本发明的制得的材料不仅具有力学性能良好，泡孔均匀细密，且加工工艺条件易控，不会出现烧糊、烧焦现象。

Description

一种聚乙烯泡沫塑料及其制备方法
技术领域
本发明属于高分子材料领域，特别涉及一种聚乙烯泡沫塑料及其制备方法。
背景技术
聚乙烯泡沫塑料是以聚乙烯树脂为主体，具有密度小、缓冲性好、化学性能稳定、机械性能好，并且加工性能好等特点。
聚乙烯泡沫塑料由于具有良好的绝热性和保温性，优良的缓冲性能，重量轻且具有柔软性、可回收等优点，目前被广泛用于精密仪器仪表、家用电器、玻璃和陶瓷制品、工艺品、贵重物品等的缓冲包装；可制成缓冲衬垫，作为包装内衬材料；也可制成缓冲袋、缓冲板箱等包装容器；还可制成冷冻食品和热食品的绝热容器等。
但是现有的发泡材料存在发泡倍率较低、稳定性较差等问题，直接影响到塑料制品的性能，造成制品强度低，质量不稳定，总体技术质量水平低。
发明内容
针对上述的需求，本发明的目的是提供了一种聚乙烯泡沫塑料及其制备方法，采用本方法制得的材料力学性能良好，泡孔均匀细密，且加工工艺条件易控，不会出现烧糊、烧焦现象。
本发明的目的可以通过以下技术方案实现：
一种聚乙烯泡沫塑料，由包含以下重量份的组分制成：
所述相容剂为乙烯/丙烯酸乙酯共聚物。
所述发泡剂选自偶氮二甲酰胺、三氯氟甲烷或异戊烷中的任一种。
所述成核剂为硫酸钙。
一种聚乙烯泡沫塑料的制备方法，该方法包括以下步骤：
(1)将低密度聚乙烯80-90重量份、单硬脂酸甘油酯5-15重量份、相容剂5-10重量份、炭黑2-5重量份、成核剂2-3重量份和尿素3-5重量份，在低速混合机中充分混合，再于塑炼机中混炼10min，温度控制在130-140℃，加入发泡剂5-8重量份，降温至100℃，加入过氧化苯二甲酰3-5重量份，在80-100℃混炼5-10min；
(2)把上述塑炼的料装入模具，温度170-175℃，压力1Mpa，经10-12min，冷却取出毛坯；
(3)再把毛坯装入发泡成型模具内，于90℃，加热10min，使其膨胀发泡成型，得到制品。
有益效果：
本发明在制备聚乙烯泡沫塑料中，采用加入了炭黑、单硬脂酸甘油酯和过氧化苯二甲酰，不仅增加了泡沫塑料本身的力学强度，而且使得各个组分均匀分散，提高了产品发泡的均匀性。
具体实施方式
以下结合实施例对本发明作进一步的说明。
实施例1
(1)将低密度聚乙烯80kg、单硬脂酸甘油酯5kg、乙烯/丙烯酸乙酯共聚物5kg、炭黑2kg、硫酸钙2kg和尿素3kg，在低速混合机中充分混合，再于塑炼机中混炼10min，温度控制在130℃，加入偶氮二甲酰胺5kg，降温至100℃，加入过氧化苯二甲酰5kg，在80℃混炼5min；
(2)把上述塑炼的料装入模具，温度170℃，压力1Mpa，经10min，冷却取出毛坯；
(3)再把毛坯装入发泡成型模具内，于90℃，加热10min，使其膨胀发泡成型，得到制品。
制得材料的性能测试结果如表1所示。
实施例2
(1)将低密度聚乙烯90kg、单硬脂酸甘油酯15kg、乙烯/丙烯酸乙酯共聚物10kg、炭黑5kg、硫酸钙3kg和尿素5kg，在低速混合机中充分混合，再于塑炼机中混炼10min，温度控制在140℃，加入三氯氟甲烷8kg，降温至100℃，加入过氧化苯二甲酰3kg，在100℃混炼10min；
(2)把上述塑炼的料装入模具，温度175℃，压力1Mpa，经12min，冷却取出毛坯；
(3)再把毛坯装入发泡成型模具内，于90℃，加热10min，使其膨胀发泡成型，得到制品。
制得材料的性能测试结果如表1所示。
实施例3
(1)将低密度聚乙烯80kg、单硬脂酸甘油酯10kg、乙烯/丙烯酸乙酯共聚物8kg、炭黑3kg、硫酸钙2kg和尿素3kg，在低速混合机中充分混合，再于塑炼机中混炼10min，温度控制在130℃，加入异戊烷7kg，降温至100℃，加入过氧化苯二甲酰3kg，在90℃混炼5min；
(2)把上述塑炼的料装入模具，温度175℃，压力1Mpa，经12min，冷却取出毛坯；
(3)再把毛坯装入发泡成型模具内，于90℃，加热10min，使其膨胀发泡成型，得到制品。
制得材料的性能测试结果如表1所示。
表1
本发明不限于这里的实施例，本领域技术人员根据本发明的揭示，不脱离本发明范畴所做出的改进和修改都应该在本发明的保护范围之内。

Claims (5)

1.一种聚乙烯泡沫塑料，其特征在于，由以下重量份的组分制成：
2.根据权利要求1所述的聚乙烯泡沫塑料，其特征在于，所述相容剂为乙烯/丙烯酸乙酯共聚物。
3.根据权利要求1所述的聚乙烯泡沫塑料，其特征在于，所述发泡剂选自偶氮二甲酰胺、三氯氟甲烷或异戊烷中的任一种。
4.根据权利要求1所述的聚乙烯泡沫塑料，其特征在于，所述成核剂为硫酸钙。
5.一种聚乙烯泡沫塑料的制备方法，其特征在于，该方法包括以下步骤：
(1)将低密度聚乙烯80-90重量份、单硬脂酸甘油酯5-15重量份、相容剂5-10重量份、炭黑2-5重量份、成核剂2-3重量份和尿素3-5重量份，在低速混合机中充分混合，再于塑炼机中混炼10min，温度控制在130-140℃，加入发泡剂5-8重量份，降温至100℃，加入过氧化二苯甲酰3-5重量份，在80-100℃混炼5-10min；
(2)把上述塑炼的料装入模具，温度170-175℃，压力1Mpa，经10-12min，冷却取出毛坯；
(3)再把毛坯装入发泡成型模具内，于90℃，加热10min，使其膨胀发泡成型，得到制品。
CN201410206930.2A 2014-05-16 2014-05-16 一种聚乙烯泡沫塑料及其制备方法 Expired - Fee Related CN103980597B (zh)

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CN104974397A (zh) * 2015-06-30 2015-10-14 苏州博利迈新材料科技有限公司 一种聚乙烯泡沫塑料及其制备方法
CN107652508A (zh) * 2017-09-28 2018-02-02 句容市武杭传动机械制造有限公司 一种聚乙烯软质泡沫塑料
EP3674355B1 (en) * 2018-12-28 2021-07-28 SABIC Global Technologies B.V. Polyethylene foam composition
CN114456468A (zh) * 2022-02-16 2022-05-10 张瑞洋 一种含hdpe的共混发泡材料及其制备方法

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CN1343738A (zh) * 2000-09-20 2002-04-10 中国石油化工股份有限公司 一种化学交联聚乙烯微孔材料及其制备方法
CN1401690A (zh) * 2002-09-27 2003-03-12 天津市润生塑胶制品有限公司 抗菌防霉挤出化学交联聚乙烯泡沫塑料

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CN1343738A (zh) * 2000-09-20 2002-04-10 中国石油化工股份有限公司 一种化学交联聚乙烯微孔材料及其制备方法
CN1401690A (zh) * 2002-09-27 2003-03-12 天津市润生塑胶制品有限公司 抗菌防霉挤出化学交联聚乙烯泡沫塑料

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