CN112356542A - 一种抗发白低成本聚丙烯箱包板材及其制备工艺 - Google Patents

一种抗发白低成本聚丙烯箱包板材及其制备工艺 Download PDF

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CN112356542A
CN112356542A CN202010979092.8A CN202010979092A CN112356542A CN 112356542 A CN112356542 A CN 112356542A CN 202010979092 A CN202010979092 A CN 202010979092A CN 112356542 A CN112356542 A CN 112356542A
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polypropylene
whitening
cost
antioxidant
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蒋春林
曹春林
聂朋奔
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Wurui New Material Technology Jiangsu Co ltd
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Abstract

本发明公开了一种抗发白低成本聚丙烯箱包板材及其制备工艺，所述板材包括两侧保护外层与内部的加强内层，所述保护外层包括包括如下重量份组分：均聚聚丙烯原料65‑75份，氟塑料4‑9份，填料10‑13份，抗氧剂1‑3份，色粉1‑2份，所述加强内层包括如下重量份组分：混合聚丙烯原料65‑80份，碳化钨1‑2份，连续玻璃纤维8‑10份，抗冲击改性剂5‑10份，填料4‑9份。本发明的优点在于抗应力发白性能优异，同时拥有良好的抗冲击能力，成本更低，整体力学性能提升明显。

Description

一种抗发白低成本聚丙烯箱包板材及其制备工艺
技术领域
本发明涉及箱包板材技术领域，特别涉及一种抗发白低成本聚丙烯箱包板材及其制备工艺。
背景技术
行李箱，亦称旅行箱、拉杆箱，是出门时所携带用以放置物品的箱子，它是行李的其中一种类型。通常行李箱是用来放置旅途上所需要的衣物、个人护理用品及纪念品。早期的行李箱是以木材或其他重的材料制成，随着航空旅行的普及，行李箱的材料趋向更为轻便的塑料材质。然而，实际使用过程中，行李箱会发生碰撞，使用塑料外壳的行李箱很容易被外部物体撞刮出白色撞痕，实际为塑料在受外力时产生的大量微小内部裂纹，这些裂纹引起折光变化，表现为发白现象，现有的箱包抗冲击性能也较差，而且常见的ABS材质箱包板材相对成本贵。
发明内容
本发明的目的是提供一种抗发白低成本聚丙烯箱包板材及其制备工艺。
本发明的上述技术目的是通过以下技术方案得以实现的：
一种抗发白低成本聚丙烯箱包板材，其特征在于，所述板材包括两侧保护外层与内部的加强内层，所述保护外层包括包括如下重量份组分：均聚聚丙烯原料65-75份，氟塑料4-9份，填料10-13份，抗氧剂1-3份，色粉1-2份；
所述加强内层包括如下重量份组分：混合聚丙烯原料65-80份，碳化钨1-2份，连续玻璃纤维8-10份，抗冲击改性剂5-10份，填料4-9份。
优选的，所述氟塑料选自聚四氟乙烯、乙烯-三氟氯乙烯共聚物、聚偏氟乙烯和聚氟乙烯中的一种。
优选的，所述保护外层与加强内层的填料选自滑石粉、碳酸钙、二氧化硅、二氧化钛中的一种。
优选的，所述抗氧剂选自亚磷酸抗氧剂、硫酯抗氧剂、酚类抗氧剂中的一种。
优选的，所述色粉选自钛白粉、炭黑、铬黄、氧化铬绿中的一种或多种。
优选的，所述混合聚丙烯原料包括聚丙烯、马来酸酐接枝聚丙烯和负载有机过氧化物母料聚丙烯，所述聚丙烯占全部的90%-95%，所述马来酸酐接枝聚丙烯占全部的2%-3%，其余为负载有机过氧化物母料聚丙烯。
优选的，所述抗冲击改性剂选自三元乙丙橡胶、乙烯-丁烯共聚物、乙烯-辛烯共聚物、苯乙烯-丁二烯-苯乙烯共聚物、乙烯-醋酸乙烯共聚物中的一种或多种。
一种抗发白低成本聚丙烯箱包板材制备工艺，其特征在于：包括如下步骤：
（1）加强内板的制备：将干燥后的混合聚丙烯原料、碳化钨、抗冲击改性剂和填料加入至高速混合机中均匀混合，然后通过螺杆挤出机，机头温度为200~230℃，熔融段的加工温度为210℃~220℃，将混合后的熔融树脂挤进特制的浸渍模头，同时引入连续玻璃纤维，使玻璃纤维与树脂在模头中完成浸渍，再通过牵引装置引出浸渍后的连续玻璃纤维浸渍料，后续通过辊压冷却，冷却后将连续玻璃纤维浸渍料裁剪至210mm*210mm大小，并将裁剪后的样品根据纤维排布角度使其两两十字交叉铺层，将铺好的样品置于烘箱中220℃-250℃加热5-10min，再使用平板硫化机在4-5MPa下冷压5-10min，制得加强内板；
（2）板材注塑：先将均聚聚丙烯原料、氟塑料、填料、抗氧剂和色粉加入行星球磨机以4000转/分钟转速下球磨30分钟，再加入搅拌桶中混合10-15分钟，转速为300-500转/分钟，再将混合均匀后的混合料从双螺杆挤出机的主喂料口加入，所述双螺杆挤出机各段温度依次为190℃，190℃，200℃，200℃，主机转速300r/min，粒料于80℃烘箱中干燥12h，将步骤（1）制得的加强内板放入预制模具中，将粒料通过注塑机注入模具一次成型，从而得到箱包板材。
综上所述，本发明有益效果为：本发明通过采用两侧保护外层与内部的加强内层，保护外层采用均聚聚丙烯的分子链短，在受力作用下分子链活动产生的微孔或微缺陷越少，抗应力发白性能越好，氟塑料的改性能够完善聚丙烯晶格，减少内部的缺陷，进一步提升收到外力的抗发白性能，加强内层通过加入连续玻璃纤维和抗冲击改性剂，提高内部的抗冲击能力，从而提升整体的力学性能，本发明相比普通的ABS箱包板材成本更低，性能更加优秀，拥有良好的抗应力发白效果。
具体实施方式
下面对本发明的具体实施方式作进一步说明，本实施例不构成对本发明的限制。
实施例1
（1）加强内板的制备：取如下重量份组分：干燥后的混合聚丙烯原料包括聚丙烯72份、马来酸酐接枝聚丙烯2份和负载有机过氧化物母料聚丙烯6份、碳化钨1份、三元乙丙橡胶5份和滑石粉6份加入至高速混合机中均匀混合，然后通过螺杆挤出机，机头温度为200℃，熔融段的加工温度为220℃，将混合后的熔融树脂挤进特制的浸渍模头，同时引入连续玻璃纤维，使玻璃纤维与树脂在模头中完成浸渍，再通过牵引装置引出浸渍后的连续玻璃纤维浸渍料，后续通过辊压冷却，冷却后将连续玻璃纤维浸渍料裁剪至210mm*210mm大小，并将裁剪后的样品根据纤维排布角度使其两两十字交叉铺层，将铺好的样品置于烘箱中230℃加热8min，再使用平板硫化机在4MPa下冷压10min，制得加强内板。
（2）板材注塑：取如下重量份组分：均聚聚丙烯原料70份、聚四氟乙烯5份、滑石粉11份、亚磷酸抗氧剂1份和钛白粉1份加入行星球磨机以4000转/分钟转速下球磨30分钟，再加入搅拌桶中混合10分钟，转速为400转/分钟，再将混合均匀后的混合料从双螺杆挤出机的主喂料口加入，所述双螺杆挤出机各段温度依次为190℃，190℃，200℃，200℃，主机转速300r/min，粒料于80℃烘箱中干燥12h，将步骤（1）制得的加强内板放入预制模具中，将粒料通过注塑机注入模具一次成型，从而得到箱包板材。
实施例2
（1）加强内板的制备：取如下重量份组分：干燥后的混合聚丙烯原料包括聚丙烯68份、马来酸酐接枝聚丙烯2份和负载有机过氧化物母料聚丙烯5份、碳化钨2份、苯乙烯-丁二烯-苯乙烯共聚物6份和二氧化硅7份加入至高速混合机中均匀混合，然后通过螺杆挤出机，机头温度为220℃，熔融段的加工温度为210℃，将混合后的熔融树脂挤进特制的浸渍模头，同时引入连续玻璃纤维，使玻璃纤维与树脂在模头中完成浸渍，再通过牵引装置引出浸渍后的连续玻璃纤维浸渍料，后续通过辊压冷却，冷却后将连续玻璃纤维浸渍料裁剪至210mm*210mm大小，并将裁剪后的样品根据纤维排布角度使其两两十字交叉铺层，将铺好的样品置于烘箱中240℃加热10min，再使用平板硫化机在5MPa下冷压7min，制得加强内板。
（2）板材注塑：取如下重量份组分：均聚聚丙烯原料67份、乙烯-三氟氯乙烯共聚物7份、二氧化硅13份、硫酯抗氧剂2份和炭黑2份加入行星球磨机以4000转/分钟转速下球磨30分钟，再加入搅拌桶中混合15分钟，转速为300转/分钟，再将混合均匀后的混合料从双螺杆挤出机的主喂料口加入，所述双螺杆挤出机各段温度依次为190℃，190℃，200℃，200℃，主机转速300r/min，粒料于80℃烘箱中干燥12h，将步骤（1）制得的加强内板放入预制模具中，将粒料通过注塑机注入模具一次成型，从而得到箱包板材。
实施例3
（1）加强内板的制备：取如下重量份组分：干燥后的混合聚丙烯原料包括聚丙烯73份、马来酸酐接枝聚丙烯2份和负载有机过氧化物母料聚丙烯3份、碳化钨2份、乙烯-丁烯共聚物10份和碳酸钙8份加入至高速混合机中均匀混合，然后通过螺杆挤出机，机头温度为200℃，熔融段的加工温度为210℃，将混合后的熔融树脂挤进特制的浸渍模头，同时引入连续玻璃纤维，使玻璃纤维与树脂在模头中完成浸渍，再通过牵引装置引出浸渍后的连续玻璃纤维浸渍料，后续通过辊压冷却，冷却后将连续玻璃纤维浸渍料裁剪至210mm*210mm大小，并将裁剪后的样品根据纤维排布角度使其两两十字交叉铺层，将铺好的样品置于烘箱中240℃加热10min，再使用平板硫化机在4MPa下冷压7min，制得加强内板。
（2）板材注塑：取如下重量份组分：均聚聚丙烯原料70份、聚四氟乙烯5份、滑石粉11份、亚磷酸抗氧剂1份和钛白粉1份加入行星球磨机以4000转/分钟转速下球磨30分钟，再加入搅拌桶中混合12分钟，转速为500转/分钟，再将混合均匀后的混合料从双螺杆挤出机的主喂料口加入，所述双螺杆挤出机各段温度依次为190℃，190℃，200℃，200℃，主机转速300r/min，粒料于80℃烘箱中干燥12h，将步骤（1）制得的加强内板放入预制模具中，将粒料通过注塑机注入模具一次成型，从而得到箱包板材。
实施例4
将上述实施例1-3所得相同厚度的箱包板材固定在应力发白试验机的垫板上，将应力发白试验机的冲头高度调整为20cm，冲头载荷为10 N，并打开弹簧开关使冲头自由下落冲击至塑料板上形成应力发白，之后用色差仪测试塑料注塑板发白处色差，并通过ΔL值判断其耐应力发白性能，塑料注塑板测出的ΔL值越小，其耐应力发白性能越好。
最终通过对普通箱包材质和实施例1-3材质进行对比，实施例1-3材质测出的ΔL值均远远低于普通箱包板材所测出的ΔL值，本发明制备的箱包板材抗应力发白性能优异，同时拥有良好的抗冲击能力，成本更低，整体力学性能提升明显。
以上所述，仅是本发明的较佳实施例而已，不用于限制本发明，本领域技术人员可以在本发明的实质和保护范围内，对本发明做出各种修改或等同替换，这种修改或等同替换也应视为落在本发明技术方案的保护范围内。

Claims (8)

1.一种抗发白低成本聚丙烯箱包板材，其特征在于，所述板材包括两侧保护外层与内部的加强内层，所述保护外层包括包括如下重量份组分：均聚聚丙烯原料65-75份，氟塑料4-9份，填料10-13份，抗氧剂1-3份，色粉1-2份；
所述加强内层包括如下重量份组分：混合聚丙烯原料65-80份，碳化钨1-2份，连续玻璃纤维8-10份，抗冲击改性剂5-10份，填料4-9份。
2.根据权利要求1所述的一种抗发白低成本聚丙烯箱包板材，其特征在于：所述氟塑料选自聚四氟乙烯、乙烯-三氟氯乙烯共聚物、聚偏氟乙烯和聚氟乙烯中的一种或多种。
3.根据权利要求1所述的一种抗发白低成本聚丙烯箱包板材，其特征在于：所述保护外层与加强内层的填料选自滑石粉、碳酸钙、二氧化硅、二氧化钛中的一种。
4.根据权利要求1所述的一种抗发白低成本聚丙烯箱包板材，其特征在于：所述抗氧剂选自亚磷酸抗氧剂、硫酯抗氧剂、酚类抗氧剂中的一种。
5.根据权利要求1所述的一种抗发白低成本聚丙烯箱包板材，其特征在于：所述色粉选自钛白粉、炭黑、铬黄、氧化铬绿中的一种或多种。
6.根据权利要求1所述的一种抗发白低成本聚丙烯箱包板材，其特征在于：所述混合聚丙烯原料包括聚丙烯、马来酸酐接枝聚丙烯和负载有机过氧化物母料聚丙烯，所述聚丙烯占全部的90%-95%，所述马来酸酐接枝聚丙烯占全部的2%-3%，其余为负载有机过氧化物母料聚丙烯。
7.根据权利要求1所述的一种抗发白低成本聚丙烯箱包板材，其特征在于：所述抗冲击改性剂选自三元乙丙橡胶、乙烯-丁烯共聚物、乙烯-辛烯共聚物、苯乙烯-丁二烯-苯乙烯共聚物、乙烯-醋酸乙烯共聚物中的一种或多种。
8.一种抗发白低成本聚丙烯箱包板材制备工艺，其特征在于：包括如下步骤：
（1）加强内板的制备：将干燥后的混合聚丙烯原料、碳化钨、抗冲击改性剂和填料加入至高速混合机中均匀混合，然后通过螺杆挤出机，机头温度为200~230℃，熔融段的加工温度为210℃~220℃，将混合后的熔融树脂挤进特制的浸渍模头，同时引入连续玻璃纤维，使玻璃纤维与树脂在模头中完成浸渍，再通过牵引装置引出浸渍后的连续玻璃纤维浸渍料，后续通过辊压冷却，冷却后将连续玻璃纤维浸渍料裁剪至210mm*210mm大小，并将裁剪后的样品根据纤维排布角度使其两两十字交叉铺层，将铺好的样品置于烘箱中220℃-250℃加热5-10min，再使用平板硫化机在4-5MPa下冷压5-10min，制得加强内板；
（2）板材注塑：先将均聚聚丙烯原料、氟塑料、填料、抗氧剂和色粉加入行星球磨机以4000转/分钟转速下球磨30分钟，再加入搅拌桶中混合10-15分钟，转速为300-500转/分钟，再将混合均匀后的混合料从双螺杆挤出机的主喂料口加入，所述双螺杆挤出机各段温度依次为190℃，190℃，200℃，200℃，主机转速300r/min，粒料于80℃烘箱中干燥12h，将步骤（1）制得的加强内板放入预制模具中，将粒料通过注塑机注入模具一次成型，从而得到箱包板材。
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