CN111057295A - 一种发泡母粒及其制作方法 - Google Patents

一种发泡母粒及其制作方法 Download PDF

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CN111057295A
CN111057295A CN201911169561.3A CN201911169561A CN111057295A CN 111057295 A CN111057295 A CN 111057295A CN 201911169561 A CN201911169561 A CN 201911169561A CN 111057295 A CN111057295 A CN 111057295A
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polyisobutylene
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宋季岭
瞿进
熊安军
王来宝
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Huaihua Dongqing Technology Co Ltd
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Abstract

本发明公开了一种发泡母粒及其制作方法，包括如下步骤：步骤一、将聚异丁烯切成小片聚异丁烯；步骤二、将聚异丁烯4.5～10.5％，无机发泡剂15～35％，有机发泡剂12～24％，抗氧剂0.1～2.5％，偶联剂1～3％，硬脂酸2～5％、POE20～40％在90℃以下搅拌混匀得到混合料；步骤三、将混合料加入双螺杆挤出机混练后挤出、冷却和切粒即制得发泡母粒。本发明的母粒中有机和无机发泡剂的总比重可提高到50％以上，使用原料种类极少，生产流程短，操作简单，无小分子析出物，可用来增强改性低VOC低挥发的聚烯烃等树脂。

Description

一种发泡母粒及其制作方法
技术领域
本发明涉及化工领域，特别涉及一种发泡母粒及其制作方法。
背景技术
由于发泡在直接使用中会发生粉尘飞扬，污染环境、损害健康。同时，发泡直接参杂在树脂基体中，会因分散不均，界面结合不良等因素，不能充分发挥其对树脂的增强作用。这些均影响了发泡的使用。
所以发泡的使用通常需要事先对其进行密炼造粒处理。为了进一步提高发泡成份在其母粒中所占比重，减少其它添加剂的使用，提升发泡母粒的性价比，本专利提出一种以聚异丁烯为载体的发泡母粒。
发明内容
本发明的目的是克服现有技术的不足之外，本发明的母粒中有机和无机发泡剂的总比重可提高到50％以上，使用原料种类极少，生产流程短，操作简单，无小分子析出物，可用来增强改性低VOC低挥发的聚烯烃等树脂。
为实现上述目的，本发明采用的技术方案如下：
一种发泡母粒，包括聚异丁烯4.5～10.5％，无机发泡剂15～35％，有机发泡剂12～24％，抗氧剂0.1～2.5％，偶联剂1～3％，硬脂酸2～5％、POE20～40％。
进一步的改进，所述聚异丁烯分子量为20000-65000。
进一步的改进，所述无机发泡剂为碳酸氢钠。
进一步的改进，所述有机发泡剂为2、2，2′-偶氮二异丁腈。
进一步的改进，所述抗氧剂为烷基吩噻嗪，偶联剂为硅烷偶联剂。
一种发泡母粒的制作方法，包括如下步骤：
步骤一、将聚异丁烯切成小片聚异丁烯；
步骤二、将聚异丁烯4.5～10.5％，无机发泡剂15～35％，有机发泡剂12～24％，抗氧剂0.1～2.5％，偶联剂1～3％，硬脂酸2～5％、POE20～40％在90℃以下搅拌混匀得到混合料；
步骤三、将混合料加入双螺杆挤出机混练后挤出、冷却和切粒即制得发泡母粒。
进一步的改进，所述步骤三中，挤出温度控制在90～100℃；挤出后的料条经过室温的空气冷却，定型后切粒。
进一步的改进，所述步骤一中，不定形态的聚异丁烯放入压片机，挤出成片后切成厚度为1mm、面积为≤1cm2的小片聚异丁烯。
具体实施方式
本发明的制作工艺如下：
1.不定形态的聚异丁烯放入压片机，挤出成片后切成厚度为1mm、面积为1cm2左右的小片；或加热到80℃左右到熔融状态后加入到密炼机或高混机中；
2.将聚异丁烯小片与发泡剂等助剂混合，后加入到高速搅拌机中，加热到70℃，并保持搅拌15min；
3.将搅拌混合好的原料投入到双螺杆挤出机，挤出温度控制在90～100℃左右；挤出后的料条经过室温的空气冷却，定型后切粒。
实施例1
一种发泡母粒的制作方法，包括如下步骤：
步骤一、将不定形态聚异丁烯经过压片机后切成小块聚异丁烯；
步骤二、将聚异丁烯10.5％，无机发泡剂35％，有机发泡剂24％，抗氧剂2.5％，偶联剂3％，硬脂酸5％、POE20％90℃以下搅拌混匀得到混合料；
步骤三、将混合料加入双螺杆挤出机混练后挤出、冷却和切粒即制得发泡母粒。
实施例2
一种发泡母粒的制作方法，包括如下步骤：
步骤一、将不定形态聚异丁烯经过压片机后切成小块聚异丁烯；
步骤二、将聚异丁烯10.5％，无机发泡剂15％，有机发泡剂24％，抗氧剂2.5％，偶联剂3％，硬脂酸5％、POE40％重量份90℃以下搅拌混匀得到混合料；
步骤三、将混合料加入双螺杆挤出机混练后挤出、冷却和切粒即制得发泡母粒。
实施例3
一种发泡母粒的制作方法，包括如下步骤：
步骤一、将不定形态聚异丁烯经过压片机后切成小块聚异丁烯；
步骤二、将聚异丁烯8％，无机发泡剂28％，有机发泡剂22％，抗氧剂0.1％，偶联剂1％，硬脂酸2％、POE38.9％90℃以下搅拌混匀得到混合料；
步骤三、将混合料加入双螺杆挤出机混练后挤出、冷却和切粒即制得发泡母粒。
实施例4
一种发泡母粒的制作方法，包括如下步骤：
步骤一、将不定形态聚异丁烯经过压片机后切成小块聚异丁烯；
步骤二、将聚异丁烯8％，无机发泡剂31％，有机发泡剂21％，抗氧剂0.5％，偶联剂2％，硬脂酸3％、POE34.5％90℃以下搅拌混匀得到混合料；
步骤三、将混合料加入双螺杆挤出机混练后挤出、冷却和切粒即制得发泡母粒。
上述四种产品的性能如下：
Figure BDA0002286655290000041
因此实施例4为最佳实施例，在保证产品性能的情况下大大提高了发泡剂的负载量。
上述实施例仅为最佳例举，而并非是对本发明的实施方式的限定。

Claims (8)

1.一种发泡母粒，其特征在于，包括聚异丁烯4.5～10.5％，无机发泡剂15～35％，有机发泡剂12～24％，抗氧剂0.1～2.5％，偶联剂1～3％，硬脂酸2～5％、POE20～40％。
2.如权利要求1所述的发泡母粒，其特征在于，所述聚异丁烯分子量为20000-65000。
3.如权利要求1所述的发泡母粒，其特征在于，所述无机发泡剂为碳酸氢钠。
4.如权利要求1所述的发泡母粒，其特征在于，所述有机发泡剂为2、2，2′-偶氮二异丁腈。
5.如权利要求1所述的发泡母粒，其特征在于，所述抗氧剂为烷基吩噻嗪，偶联剂为硅烷偶联剂。
6.一种发泡母粒的制作方法，其特征在于，包括如下步骤：
步骤一、将聚异丁烯切成小片聚异丁烯；
步骤二、将聚异丁烯4.5～10.5％，无机发泡剂15～35％，有机发泡剂12～24％，抗氧剂0.1～2.5％，偶联剂1～3％，硬脂酸2～5％、POE20～40％在90℃以下搅拌混匀得到混合料；
步骤三、将混合料加入双螺杆挤出机混练后挤出、冷却和切粒即制得发泡母粒。
7.如权利要求6所述的发泡母粒的制作方法，其特征在于，所述步骤三中，挤出温度控制在90～100℃；挤出后的料条经过室温的空气冷却，定型后切粒。
8.如权利要求6所述的发泡母粒的制作方法，其特征在于，所述步骤一中，不定形态的聚异丁烯放入压片机，挤出成片后切成厚度为1mm、面积为≤1cm2的小片聚异丁烯。
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CN114262451A (zh) * 2021-11-30 2022-04-01 上海金发科技发展有限公司 一种发泡剂母粒材料及其制备方法和应用

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