CN104098835A - 一种pen纤维增强聚丙烯耐高温材料及其制备方法 - Google Patents

一种pen纤维增强聚丙烯耐高温材料及其制备方法 Download PDF

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CN104098835A
CN104098835A CN201410294080.6A CN201410294080A CN104098835A CN 104098835 A CN104098835 A CN 104098835A CN 201410294080 A CN201410294080 A CN 201410294080A CN 104098835 A CN104098835 A CN 104098835A
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pen
fiber
reinforced polypropylene
pen fiber
high temperature
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叶建华
皮正亮
薛鹏
葛嘉宝
郭建强
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GUANGDONG WAYLAM ENGINEERING PLASTICS Co Ltd
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Abstract

本发明公开了一种PEN纤维增强聚丙烯耐高温材料及其制备方法，包括以下质量份数的各组分：聚丙烯40~60%，PEN纤维5~35%，矿物纤维5~35%，相容剂3~6%，抗氧剂0.2~0.5%，加工助剂0.4~0.8%；所述复合物的制备方法包括如下步骤：按重量百分比称取各组分，PEN纤维从挤出机中玻纤口加入，其他组分在高速混料机中混合3分钟后放入双螺杆挤出机中挤出造粒即得。与现有技术相比，本发明采用PEN纤维增强聚丙烯，具有很好的相容性和耐温性，所得的增强聚丙烯材料具有耐高温、易加工、力学性能良好的特点，可以广泛应用于家电制品和电子电气配件行业。

Description

一种PEN纤维增强聚丙烯耐高温材料及其制备方法
技术领域
本发明属于高分子材料技术领域，涉及一种PEN纤维增强聚丙烯耐高温材料及其制备方法，该材料可广泛用于家电制品、电子电气配件等领域。
背景技术
聚萘二甲酸乙二醇酯（PEN）作为一种性能优良的包装材料，目前瓶类包装容器已成为PEN的主要市场。由于PEN具有优良的特性，用PEN材料可以长期使用温度可达约155℃，对紫外线、氧气、二氧化碳阻隔性，并耐化学药品，用于饮料、啤酒、化妆品、婴儿食品的包装，市场上已经出现了大量的PEN纤维和PEN合金纤维。
选择PEN纤维代替部分矿物纤维可以提高聚丙烯的弯曲模量，当PEN纤维的剪切长度大于0.3MM时用来作为增强PP的主体骨架来达到较高的耐温性。
发明内容
本发明的目的在于提供针一种能解决传统矿物纤维聚丙烯耐热性差和表面光洁度差的问题的PEN纤维增强聚丙烯耐高温材料及其制备方法。
本发明解决其技术问题所采用的技术方案是：PEN纤维增强聚丙烯耐高温材料，由以下以重量份计的原料组成：
PP树脂                  40-60%
PEN纤维                5~35%
矿物纤维                 5~35%
相容剂                   3~6%
抗氧剂                   0.2~0.5%
加工助剂                 0.4~0.8%。
所述的PP树脂为一种均聚PP，或者是一种均聚PP和另一种共聚PP的混合物，均聚PP的熔指为2~5 g/10min，共聚PP的熔指为1~3 g/10min 。
所述的PEN纤维为聚萘二甲酸乙二醇酯纤维，包括单一聚萘二甲酸乙二醇酯纤维、聚萘二甲酸乙二醇酯和聚对苯二甲酸乙二醇酯合金纤维。
所述的矿物纤维为硅酸钙晶须和硫酸钙晶须复合物。
所述的相容剂为一种极性单体接枝聚合物，如马来酸酐接枝聚丙烯。
所述抗氧剂为受阻酚类抗氧剂（1010）和有机亚磷酸酯类抗氧剂（168）1：2的复配物。
所述的加工助剂为自制助剂。。
本发明所述的一种PEN纤维增强聚丙烯耐高温材料的制备方法，其特征在于包括以下步骤：
（1）原材料的混合
将PP和PEN纤维在100 ℃下烘2~4小时，水分控制在0.1％以下；再将PP、矿物纤维、相容剂、抗氧剂、加工助剂等在混料机中高速混合3~5分钟，充分搅拌使各组分均匀分散且避免物料结块；
（2）熔融挤出
将混合好的物料在双螺杆挤出机上挤出造粒，PEN纤维通过玻纤口加入，调节主机转速和喂料频率，熔融挤出温度在190~210 ℃之间，主机转速为350 rpm；
（3）造粒及后处理
对挤出的物料进行冷却、风干、切粒、包装得到成品。
本发明采用PEN纤维增强的聚丙烯，加工性能良好，表面光泽好现象；本产品力学性能较好，耐热性佳，可广泛用于家电制品、电子电气配件。
具体实施方式
以下结合实施例对本发明作详细的说明，但实施例并不对本发明做任何形式的限定。
PP树脂为一种均聚PP-1和一种共聚PP-2，牌号分别为T30S和K8303，熔指分别为3和2 g/10min；矿物纤维为硅酸钙晶须和硫酸钙晶须复合物；相容剂为马来酸酐接枝的聚丙烯，PEN纤维为自制偶联处理PEN纤维；抗氧剂为受阻胺抗氧剂（1010）和有机亚磷酸酯类抗氧剂（168）1:2的复配物；加工助剂为自制助剂。
实施例A
将PP树脂（质量比PP-1：PP-2=4：1）重量百分比为55.5份，矿物纤维为20份，相容剂3.0份，，抗氧剂0.5份、加工助剂1份，在高速混合机中混合3分钟，PEN纤维为20份在挤出机玻纤口加入，经过熔融温度为190~210 ℃双螺杆挤出机挤出，经冷却、切粒、过筛、包装得到产品。
实施例B
将PP树脂（PP-1， 100%）重量百分比为45.5份，矿物纤维为20份，相容剂3.0份，，抗氧剂0.5份、加工助剂1份，在高速混合机中混合3分钟，PEN纤维为30份在挤出机玻纤口加入，经过熔融温度为190~210 ℃双螺杆挤出机挤出，经冷却、切粒、过筛、包装得到产品。
实施例C
将PP树脂（PP-1 ，100%）重量百分比为45.5份，矿物纤维为30份，相容剂3.0份，，抗氧剂0.5份、加工助剂1份，在高速混合机中混合3分钟，PEN纤维为20份在挤出机玻纤口加入，经过熔融温度为190~210 ℃双螺杆挤出机挤出，经冷却、切粒、过筛、包装得到产品。
性能评价方式及实行标准
对实施例A、实施例B和实施例C所得一种PEN纤维增强聚丙烯耐高温材料及其制备方法
综上所述，是本发明的较佳实施例，凡依本发明技术方案所做出的改变，所产生的功能作用未能超出本发明技术方案的范围时，均属于本发明的保护范围。

Claims (7)

1.一种PEN纤维增强聚丙烯耐高温材料，其特征在于按重量百分比由以下组份组成：
PP树脂                  40-60%
PEN纤维                5~35%
矿物纤维                 5~35%
相容剂                   3~6%
抗氧剂                   0.2~0.5%
加工助剂                 0.4~0.8% 。
2.如权利要求1所述的PEN纤维增强聚丙烯耐高温材料，其特征在于：所述的PP树脂为聚丙烯树脂，可以是单一的均聚PP树脂，或者一定比例的均聚PP和共聚PP的混合物。
3.如权利要求1所述的PEN纤维增强聚丙烯耐高温材料，其特征在于：所述的PEN纤维为聚萘二甲酸乙二醇酯纤维，包括单一聚萘二甲酸乙二醇酯纤维、聚萘二甲酸乙二醇酯和聚对苯二甲酸乙二醇酯合金纤维。
4.如权利要求1所述的PEN纤维增强聚丙烯耐高温材料，其特征在于：所述的矿物纤维为硅酸钙晶须和硫酸钙晶须，按照一定比例复合而成。
5.如权利要求1所述的PEN纤维增强聚丙烯耐高温材料，其特征在于：所述的相容剂为极性单体接枝聚合物，其中聚合物单体为聚乙烯、聚丙烯、苯乙烯与丁二烯的共聚物和乙烯-丙烯酸酯-甲基丙烯酸酸缩水甘油酯共聚物中的一种或者混合物，极性单体为马来酸酐、丙烯酸、甲基丙烯酸和甲基丙烯酸环氧丙酯中的一种或其混合物。
6.如权利要求1所述的PEN纤维增强聚丙烯耐高温材料，其特征在于：所述抗氧剂为受阻酚类抗氧剂和有机亚磷酸酯类抗氧剂的复配物。
7.如权利要求1所述的PEN纤维增强聚丙烯耐高温材料的制备方法，其特征在于包括以下步骤：
（1）将PP树脂、矿物纤维、相容剂、抗氧剂、加工助剂按照重量份数在高速混合器高速混合；
（2）将步骤（1）中混好的原料经双螺杆挤出机熔融同时在玻纤口加入PEN纤维，挤出造粒；
（3）将步骤（2）混好的原料经双螺杆挤出机熔融挤出同时在玻纤口加入玻纤；双螺杆挤出机工艺条件为：双螺杆挤出机一区温度180-200℃ ，二区温度190-210 ℃，三区温度 190-210 ℃，四区温度 190-200 ℃，五区温度 180-200 ℃，模头温度为 180-200 ℃，；螺杆转速为350转/分，通过调节螺杆转速、喂料频率来控制PEN纤维含量。
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