CN108164849A - 一种esp发泡缓冲包装材料及其制备方法 - Google Patents

一种esp发泡缓冲包装材料及其制备方法 Download PDF

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CN108164849A
CN108164849A CN201711277997.5A CN201711277997A CN108164849A CN 108164849 A CN108164849 A CN 108164849A CN 201711277997 A CN201711277997 A CN 201711277997A CN 108164849 A CN108164849 A CN 108164849A
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黄家月
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Abstract

本发明公开了一种esp发泡缓冲包装材料,它是由下述重量份的原料组成的:苯乙烯130‑140、过氧化二异丙苯2‑3、发泡乳液10‑16、二丁基二硫代氨基甲酸锌2‑3、羟基乙叉二膦酸0.8‑1、聚乙烯吡咯烷酮10‑14、改性弹性体乳液16‑20、8‑羟基喹啉0.4‑1、轻质碳酸钙6‑8。本发明加入的轻质碳酸钙采用羟基乙叉二膦酸处理,能够有效的改善碳酸钙表面的活性,从而提高碳酸钙与聚苯乙烯间的相容性,从而进一步提高成品材料的力学稳定性。本发明的包装材料质轻,稳定性好,不易破损。

Description

一种esp发泡缓冲包装材料及其制备方法
技术领域
本发明属于材料领域,具体涉及一种esp发泡缓冲包装材料及其制备方法。
背景技术
EPS泡沫是一种热塑性材料,经过加热发泡以后,每立方米体积含有300--600万个独立密闭气泡,内含空气体积为98%以上,这样的结构给与它许多特性。由于密度可低至10-30kg/m3,因此EPS是当前最轻的包装材料,在负荷较高的情况下,这种材料会被压弯,当受到震荡或坠落地面时,他会起到缓冲、防震的作用;同时,由于空气的热导性能很小且又被封闭于泡沫中而不能对流,所以EPS是一种隔热保温性能非常优越的材料。
可发性聚苯乙烯是一种理想的包装材料,通过成型工艺,可根据需要加工成各种形状、不同厚度的包装产品。在负荷较高的情况下,材料通过变形、吸能、分解能量等达到缓冲、减震的作用,同时具有保温、隔热的功能。EPS包装产品一般为白色,根据要求可生产彩色。主要使用特性:质轻,具有吸收冲击载荷的能力,隔热性能好,隔音性能好,抗老化、腐蚀性能,防静电性能。
1、质轻。EPS包装产品部分空间为气体所取代,每立方分米体积内含有300-600万个独立密闭汽泡。因此它比塑料体积大几倍至几十倍。
2、具有吸收冲击载荷的能力。EPS包装产品受到冲击载荷时,泡沫中的气体通过滞流和压缩,使外来的能量被消耗、散逸,泡体以较小的负加速度,逐步终止冲击载荷,因此具有较好的防震效果。然而市售的包装材料弹性不足,容易破损,从而造成包装物品的损毁。
发明内容
本发明的目的在于针对现有技术的缺陷和不足,提供一种esp发泡缓冲包装材料及其制备方法。
为实现上述目的,本发明采用以下技术方案:
一种esp发泡缓冲包装材料,它是由下述重量份的原料组成的:
苯乙烯130-140、过氧化二异丙苯2-3、发泡乳液10-16、二丁基二硫代氨基甲酸锌2-3、羟基乙叉二膦酸0.8-1、聚乙烯吡咯烷酮10-14、改性弹性体乳液16-20、8-羟基喹啉0.4-1、轻质碳酸钙6-8。
所述的发泡乳液的制备方法,包括以下步骤:
取4-6重量份的戊烷发泡剂、1-2重量份的椰油酸二乙醇酰胺混合,加入到混合料重量6-8倍的、35-40%的乙醇溶液中,搅拌均匀,即得。
所述的改性弹性体乳液是由下述重量份的原料组成的:
热塑性弹性体20-30、二甲氨基丙胺1-2、棕榈蜡3-4、脂肪酸聚乙二醇酯4-6;
制备方法包括以下步骤:
(1)取棕榈蜡,加入到其重量4-6倍的无水乙醇中,搅拌均匀,在70-75℃下保温搅拌20-30分钟,出料,加入硬脂酸钡,搅拌至常温,得醇溶液;
(2)取热塑性弹性体,加入到其重量2-4倍的二甲基甲酰胺中,在110-120℃的恒温油浴中保温7-9分钟,出料冷却,得弹性酰胺溶液;
(3)取上述醇溶液、弹性酰胺溶液混合,搅拌均匀,加入脂肪酸聚乙二醇酯,超声1-3分钟,加入二甲氨基丙胺,在60-65℃下保温搅拌1-2小时,即得所述改性弹性体乳液。
所述的esp发泡缓冲包装材料的制备方法,包括以下步骤:
(1)取8-羟基喹啉,加入到上述改性弹性体乳液中,搅拌均匀,加入二丁基二硫代氨基甲酸锌,搅拌均匀,得预混弹性体分散液;
(2)取过氧化二异丙苯,加入到其重量6-8倍的异丙醇中,搅拌均匀;
(3)取轻质碳酸钙、羟基乙叉二膦酸混合,在55-60℃下保温搅拌10-20分钟,加入到聚乙烯吡咯烷酮中,搅拌至常温,得碳酸钙分散液;
(4)取苯乙烯,加入到上述预混弹性体分散液中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为70-75℃,加入过氧化二异丙苯的异丙醇溶液,保温搅拌3-5小时,出料,得弹性改性聚苯乙烯溶液;
(5)取上述碳酸钙分散液、弹性改性聚苯乙烯溶液混合,搅拌均匀,超声10-20分钟,加入上述发泡乳液,升高温度为110-120℃,保温2-3小时,冷却出料,将产物经过洗涤、干燥、筛分后送入到发泡机中,在0.4-0.5Mpa、160℃下蒸汽加热2-3小时,出料,室温冷却,即得所述esp发泡缓冲包装材料。
本发明的优点:
本发明以热塑性弹性体为原料,以二甲基甲酰胺为溶剂,通过脂肪酸聚乙二醇酯分散,将得到的弹性分散液作为苯乙烯的聚合反应溶液,能够有效的改善弹性体与聚苯乙烯间的分散相容性,从而提高成品包装材料的力学稳定性和表面弹性,本发明加入的轻质碳酸钙采用羟基乙叉二膦酸处理,能够有效的改善碳酸钙表面的活性,从而提高碳酸钙与聚苯乙烯间的相容性,从而进一步提高成品材料的力学稳定性。本发明的包装材料质轻,稳定性好,不易破损。
具体实施方式
实施例1
一种esp发泡缓冲包装材料,它是由下述重量份的原料组成的:
苯乙烯130、过氧化二异丙苯2、发泡乳液10、二丁基二硫代氨基甲酸锌2、羟基乙叉二膦酸0.8、聚乙烯吡咯烷酮10、改性弹性体乳液16、8-羟基喹啉0.4、轻质碳酸钙6。
所述的发泡乳液的制备方法,包括以下步骤:
取4重量份的戊烷发泡剂、1重量份的椰油酸二乙醇酰胺混合,加入到混合料重量6倍的、35%的乙醇溶液中,搅拌均匀,即得。
所述的改性弹性体乳液是由下述重量份的原料组成的:
热塑性弹性体20、二甲氨基丙胺1、棕榈蜡3、脂肪酸聚乙二醇酯4;
制备方法包括以下步骤:
(1)取棕榈蜡,加入到其重量4倍的无水乙醇中,搅拌均匀,在70℃下保温搅拌20分钟,出料,加入硬脂酸钡,搅拌至常温,得醇溶液;
(2)取热塑性弹性体,加入到其重量2倍的二甲基甲酰胺中,在110℃的恒温油浴中保温7分钟,出料冷却,得弹性酰胺溶液;
(3)取上述醇溶液、弹性酰胺溶液混合,搅拌均匀,加入脂肪酸聚乙二醇酯,超声1分钟,加入二甲氨基丙胺,在60℃下保温搅拌1小时,即得所述改性弹性体乳液。
所述的esp发泡缓冲包装材料的制备方法,包括以下步骤:
(1)取8-羟基喹啉,加入到上述改性弹性体乳液中,搅拌均匀,加入二丁基二硫代氨基甲酸锌,搅拌均匀,得预混弹性体分散液;
(2)取过氧化二异丙苯,加入到其重量6倍的异丙醇中,搅拌均匀;
(3)取轻质碳酸钙、羟基乙叉二膦酸混合,在55℃下保温搅拌10分钟,加入到聚乙烯吡咯烷酮中,搅拌至常温,得碳酸钙分散液;
(4)取苯乙烯,加入到上述预混弹性体分散液中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为70℃,加入过氧化二异丙苯的异丙醇溶液,保温搅拌3小时,出料,得弹性改性聚苯乙烯溶液;
(5)取上述碳酸钙分散液、弹性改性聚苯乙烯溶液混合,搅拌均匀,超声10分钟,加入上述发泡乳液,升高温度为110℃,保温2小时,冷却出料,将产物经过洗涤、干燥、筛分后送入到发泡机中,在0.4Mpa、160℃下蒸汽加热2小时,出料,室温冷却,即得所述esp发泡缓冲包装材料。
实施例2
一种esp发泡缓冲包装材料,它是由下述重量份的原料组成的:
苯乙烯140、过氧化二异丙苯3、发泡乳液16、二丁基二硫代氨基甲酸锌3、羟基乙叉二膦酸1、聚乙烯吡咯烷酮14、改性弹性体乳液20、8-羟基喹啉1、轻质碳酸钙8。
所述的发泡乳液的制备方法,包括以下步骤:
取6重量份的戊烷发泡剂、2重量份的椰油酸二乙醇酰胺混合,加入到混合料重量8倍的、40%的乙醇溶液中,搅拌均匀,即得。
所述的改性弹性体乳液是由下述重量份的原料组成的:
热塑性弹性体30、二甲氨基丙胺2、棕榈蜡4、脂肪酸聚乙二醇酯6;
制备方法包括以下步骤:
(1)取棕榈蜡,加入到其重量6倍的无水乙醇中,搅拌均匀,在75℃下保温搅拌30分钟,出料,加入硬脂酸钡,搅拌至常温,得醇溶液;
(2)取热塑性弹性体,加入到其重量4倍的二甲基甲酰胺中,在120℃的恒温油浴中保温9分钟,出料冷却,得弹性酰胺溶液;
(3)取上述醇溶液、弹性酰胺溶液混合,搅拌均匀,加入脂肪酸聚乙二醇酯,超声3分钟,加入二甲氨基丙胺,在65℃下保温搅拌2小时,即得所述改性弹性体乳液。
所述的esp发泡缓冲包装材料的制备方法,包括以下步骤:
(1)取8-羟基喹啉,加入到上述改性弹性体乳液中,搅拌均匀,加入二丁基二硫代氨基甲酸锌,搅拌均匀,得预混弹性体分散液;
(2)取过氧化二异丙苯,加入到其重量8倍的异丙醇中,搅拌均匀;
(3)取轻质碳酸钙、羟基乙叉二膦酸混合,在60℃下保温搅拌20分钟,加入到聚乙烯吡咯烷酮中,搅拌至常温,得碳酸钙分散液;
(4)取苯乙烯,加入到上述预混弹性体分散液中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为75℃,加入过氧化二异丙苯的异丙醇溶液,保温搅拌5小时,出料,得弹性改性聚苯乙烯溶液;
(5)取上述碳酸钙分散液、弹性改性聚苯乙烯溶液混合,搅拌均匀,超声20分钟,加入上述发泡乳液,升高温度为120℃,保温3小时,冷却出料,将产物经过洗涤、干燥、筛分后送入到发泡机中,在0.5Mpa、160℃下蒸汽加热3小时,出料,室温冷却,即得所述esp发泡缓冲包装材料。
性能测试:
本发明实施例1的esp发泡缓冲包装材料弯曲强度25.1pa;压缩强度26.3Mpa;
本发明实施例2的esp发泡缓冲包装材料弯曲强度26.4pa;压缩强度27.1Mpa;
市售esp发泡缓冲包装材料的弯曲强度为15-20Mpa;压缩强度为15-20Mpa。

Claims (4)

1.一种esp发泡缓冲包装材料,其特征在于,它是由下述重量份的原料组成的:
苯乙烯130-140、过氧化二异丙苯2-3、发泡乳液10-16、二丁基二硫代氨基甲酸锌2-3、羟基乙叉二膦酸0.8-1、聚乙烯吡咯烷酮10-14、改性弹性体乳液16-20、8-羟基喹啉0.4-1、轻质碳酸钙6-8。
2.根据权利要求1所述的一种esp发泡缓冲包装材料,其特征在于,所述的发泡乳液的制备方法,包括以下步骤:
取4-6重量份的戊烷发泡剂、1-2重量份的椰油酸二乙醇酰胺混合,加入到混合料重量6-8倍的、35-40%的乙醇溶液中,搅拌均匀,即得。
3.根据权利要求1所述的一种esp发泡缓冲包装材料,其特征在于,所述的改性弹性体乳液是由下述重量份的原料组成的:
热塑性弹性体20-30、二甲氨基丙胺1-2、棕榈蜡3-4、脂肪酸聚乙二醇酯4-6;
制备方法包括以下步骤:
(1)取棕榈蜡,加入到其重量4-6倍的无水乙醇中,搅拌均匀,在70-75℃下保温搅拌20-30分钟,出料,加入硬脂酸钡,搅拌至常温,得醇溶液;
(2)取热塑性弹性体,加入到其重量2-4倍的二甲基甲酰胺中,在110-120℃的恒温油浴中保温7-9分钟,出料冷却,得弹性酰胺溶液;
(3)取上述醇溶液、弹性酰胺溶液混合,搅拌均匀,加入脂肪酸聚乙二醇酯,超声1-3分钟,加入二甲氨基丙胺,在60-65℃下保温搅拌1-2小时,即得所述改性弹性体乳液。
4.一种如权利要求1所述的esp发泡缓冲包装材料的制备方法,其特征在于,包括以下步骤:
(1)取8-羟基喹啉,加入到上述改性弹性体乳液中,搅拌均匀,加入二丁基二硫代氨基甲酸锌,搅拌均匀,得预混弹性体分散液;
(2)取过氧化二异丙苯,加入到其重量6-8倍的异丙醇中,搅拌均匀;
(3)取轻质碳酸钙、羟基乙叉二膦酸混合,在55-60℃下保温搅拌10-20分钟,加入到聚乙烯吡咯烷酮中,搅拌至常温,得碳酸钙分散液;
(4)取苯乙烯,加入到上述预混弹性体分散液中,搅拌均匀,送入到反应釜中,通入氮气,调节反应釜温度为70-75℃,加入过氧化二异丙苯的异丙醇溶液,保温搅拌3-5小时,出料,得弹性改性聚苯乙烯溶液;
(5)取上述碳酸钙分散液、弹性改性聚苯乙烯溶液混合,搅拌均匀,超声10-20分钟,加入上述发泡乳液,升高温度为110-120℃,保温2-3小时,冷却出料,将产物经过洗涤、干燥、筛分后送入到发泡机中,在0.4-0.5Mpa、160℃下蒸汽加热2-3小时,出料,室温冷却,即得所述esp发泡缓冲包装材料。
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CN105462042A (zh) * 2016-01-11 2016-04-06 宁波高新区辉门科技有限公司 一种微发泡轻质塑料及其制备方法

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CN109251431A (zh) * 2018-07-11 2019-01-22 桐城市新瑞建筑工程有限公司 一种抗弯折发泡保温板及其制备方法

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